Present application is a divisional patent application of the original patent
application No.1751/KOL NP/2006 filed on June 23, 2006 which is the national
phase application corresponding to the PCT application No. PCT/JP2004/019702
dated 22.12.2004.
Technical Field
[0001] The present invention relates to a blower type chemical diffusing apparatus
for volatilizing and diffusing a volatile chemical such as an insect pest control agent
as an insecticide, miticide, vermin or pest repellent, vermin growth retardant or
sucking inhibitor, an aromatic, deodorant, or germicide, by the force of an airflow or
wind generated by an air blower.
[0002] The present invention also relates to a blower type chemical diffusing
apparatus as a blower type vermin or insect pest control apparatus for applying
airflow to a chemical receptacle retaining a vermin or insect control component to
emanate or diffuse such control component together with air into an atmosphere.
[0003] The present invention also relates to a blower type chemical diffusing
apparatus as a blower type chemical emanating apparatus provided with a chemical
receptacle charged with a volatile chemical serving as an insecticide, repellent,
aromatic, deodorant, germicide or fungicide and an air blower whereby air is drawn
through an air inlet port and air is emanated or diffused through an outlet port into
an atmosphere together with such volatile chemical volatilizing from the chemical
receptacle and occluded into air.
[0004] The present invention also relates to a chemical cartridge for retaining a
volatile chemical such as an insect pest control agent, aromatic, deodorant or
germicide and permitting such volatile chemical to be emanated or diffused into an
atmosphere from the chemical cartridge when used in a blower type chemical
diffusing apparatus.
[0005] The present invention also relates to a chemical impregnated body or
member for retaining a volatile chemical such as an insect pest control agent,
aromatic, deodorant or germicide and permitting such volatile chemical to be
emanated or diffused into an atmosphere from the chemical cartridge when used in a
blower type chemical diffusing apparatus.

Background Art
[0006] There is known a blower type chemical diffusing apparatus as disclosed in JP
2002-291392 A.
[0007] Such a blower type chemical diffusing apparatus is provided in its body with
an air blower, a chemical receptacle (chemical cartridge) and a power supply
container wherein the air blower includes a fan and a motor, the chemical receptacle
is stored with a volatile chemical and the power supply container contains a battery.
[0008] And, the motor is driven to rotate the fan, which causes air to flow through
the chemical receptacle, which in turn volatilizes volatile chemical and diffuses it
into an atmosphere.
[0009] With the volatile chemical and the battery becoming ineffective and ending
their lives with its use, the conventional blower type chemical diffusing apparatus of
the type described above is designed to make them replaceable for its continued use.
[0010] Thus, for example, the power supply container is designed to contain the
battery replaceably and have the chemical receptacle replaceably mounted therewith
and to be itself mounted replaceably in the apparatus body so that removing the
power supply container from the apparatus body allows replacing the chemical
receptacle and the battery.
[0011] This arrangement entails detachably interconnecting a plurality of members
together to enable replacing the chemical receptacle and battery and thus makes the
structure complicated and costly.
[0012] Also, the need to remove the power supply container from the apparatus
body and then to take the chemical receptacle and battery out of the removed power
supply container for replacement requires troublesome handling and gives rise to a
chance that either the apparatus body or the power supply container may be lost
while they are detached one from the other.
[0013] Further, the inability to connect the motor for the air blower mounted in the
apparatus body to the battery received in the power supply container by any cord
calls for a complicated structure for electrically connecting them together.
[0014] Further, a volume of chemical receptacle in the state where it fills a large
number of particulate chemical impregnated bodies in a porous receptacle body must

be large in thickness.
[0015] This requires that the apparatus body be large in thickness.
[0016] There is also known a blower type apparatus for controlling harmful insects
as disclosed in JP 2001-197856 A.
[0017] Such an insect control apparatus includes a chemical receptacle retaining an
insect control component or ingredient, a fan and a motor which are all contained in
an apparatus body (in the form of a chamber) which in turn has an air inlet and an air
outlet port wherein the rotation of the fan by means of the motor causes air to be
drawn through the air inlet port, to strike the chemical receptacle and to issue
through the air outlet port together with insect control ingredient into an atmosphere,
thereby emanating or diffusing the insect control ingredient into the atmosphere.
[0018] A conventional insect control apparatus of this type to make its insect control
function effective when it is carried on a user and used in the outdoors, has its body
formed with a pair of air outlet ports facing upwards and downwards, respectively,
so that when used carried on the user it causes air containing insect control
ingredient to issue both upwards and downwards through the upward and downward
facing air outlet ports, respectively.
[0019] A conventional insect control apparatus of this type having its apparatus
body formed with upward and downward facing air outlet ports so that when used as
carried on a waist of the user it can cause air containing insect control ingredient to
issue selectively both upwards and downwards is designed to have insect control
ingredient reach both the user's head and feet. With such a conventional insect
control apparatus formed simply with such upward and downward facing outlet
ports alone, however, it takes time the insect control ingredient reaches the user's
head and feet and it is thus not possible to control harmful insect from the very
beginning of use of the apparatus.
[0020] In an open space such as the outdoors where the apparatus is used, air
currents produced by wind flow and movement of the user tend to fluctuate air flows
discharged and prevent them from diffusing into target directions and may not
protect the user from suffering from insect attack.
[0021] Also, in a blower type chemical diffusing apparatus as disclosed in JP 2004-

24161 A which is designed to draw air through an air intake or suction port by an air
blower and to cause chemical volatilizing from a chemical receptacle (chemical
cartridge) to issue through an air discharge port together with air drawn, as shown in
Figs. 23 and 24 the apparatus body 241 is formed on its top with the suction port 242
for drawing air and on its two opposed sides with such air discharge ports 243 for
emanating chemical entrained in air drawn. And, the suction port 242 on the top of
the apparatus body 241 is provided with the chemical or chemical accommodating
receptacle 244 in which the chemical is retained. This chemical receptacle 244 is
formed in both its top and bottom with slits 245 opening in the form of annual rings
(or annual growth rings of a tree) through which air is allowed to flow. Further, the
apparatus body 241 is provided in its inside with the air blower 246 and has battery
cells 247 received at two opposite sides of the air blower 246, respectively, as a
power supply for moving the latter.
[0022] With the apparatus 241 made up in this way, the air blower 246 built therein
to work energized by the battery cells 247 draws air from the suction port 242 at its
top through the chemical receptacle 244 and causes air drawn into and past the
chemical receptacle 244 while carrying chemical volatilizing there to emanate and
diffuse through the air discharge ports 243 at its side faces into its environment.
[0023] On the other hand, the apparatus body 241 has a wearing belt 248 attached
thereto to enable it to be worn on a user's wrist or the like. Such a wearing belt 248
is flexible, thin and elongate and with a buckle 249 at one of its ends with which the
apparatus body 241 can be worn on the user's wrist or the like, thereby enabling the
subject blower type chemical diffusing apparatus to be used fitted on the wrist or the
like.
[0024] A conventional blower type chemical diffusing apparatus of this type thus
requires it's apparatus body to include a chemical receptacle containing a volatile
chemical, an air blower for diffusing chemical volatilizing from the chemical
receptacle into the environment and further a battery as a power supply for
energizing the air blower as the weightiest component. As a result, the apparatus
body tends to become large in size and heavy in weight, giving rise to the chance
that this makes the user feel it hard to use the apparatus. Especially in case the

subject blower type chemical diffusing apparatus is used as worn on the wrist or the
like, the user may feel it disagreeable with the feeling of its size and weight.
[0025] There is also known a blower type chemical diffusing apparatus as disclosed
in JP 2002-291392 A.
[0026] In a blower type chemical diffusing apparatus of this type, its apparatus body
includes an air blower, a chemical cartridge and a power supply container wherein
the air blower has a fan and a motor, the chemical cartridge comprising a porous
receptacle that contains a large number of particulate chemical impregnated bodies
impregnated with a chemical, and the power supply container accommodates a
battery.
[0027] And, it is so designed that rotating the fan with the motor causes air to pass
through the receptacle and to emanate with chemical entrained therein into the
atmosphere.
[0028] A conventional chemical cartridge as mentioned above comprises a porous
receptacle that needs to contain a large number of particulate chemical impregnated
bodies impregnated with a chemical must be large in thickness, requiring such a
chemical cartridge to be large in thickness.
[0029] As a result, a blower type chemical diffusing apparatus of this type requiring
a chemical cartridge, an air blower and battery cells to be all mounted within its
apparatus body must become large in thickness as a whole.
[0030] Further, the conventional chemical cartridge as mentioned above comprises a
porous receptacle containing a large number of particulate chemical impregnated
bodies impregnated with a chemical, and the chemical in these particulate chemical
impregnated bodies upon volatilization is entrained in air passed through the
receptacle and emitted progressively into the atmosphere. When the chemical
impregnated in the chemical impregnated bodies is depleted, the receptacle as it
carries the particulate chemical impregnated bodies is thrown away as waste.
[0031] Such chemical cartridges which thus require that they when used out be
thrown away as waste, are unfavorable under social circumstances nowadays such as
waste and energy-saving problems.
[0032] There is also known a chemical impregnated body as disclosed in JP 2001-

200239 A.
[0033] This chemical impregnated body comprises a plurality of chemical carrying
nets composed of twisted yarn and laid one over another wherein each of the nets is
impregnated with a chemical.
[0034] A conventional chemical impregnated body as mentioned above in which a
plurality of nets are laid one on another, can be made, but may make the user feel it
hard to use this chemical impregnated body as having a plurality of nets laid one on
another and moreover may cause a user's hand to be stained with chemical from
such a chemical impregnated body when held by the hand.
When the chemical impregnated in the nets is depleted, the nets are thrown away as
waste like the chemical cartridge mentioned above. Such chemical impregnated
body is unfavorable under social circumstances nowadays such as waste and energy-
saving problems.
[0035] There is also known a chemical cartridge as disclosed in JP Design
Registration No. 1173150.
[0036] This chemical cartridge comprises a receptacle defined by an outer casing
having an opening and an inner casing having an opening wherein a large number of
particulate chemical impregnated bodies impregnated with a chemical are received
in a space between the outer and inner casings.
[0037] This chemical cartridge is designed to contain particulate chemical
impregnated bodies impregnated with a chemical in a limited portion of the volume
of the cartridge through which air is passed to entrain volatilizing chemical therein
for diffusion into the atmosphere, is limited in the amount of chemical it can contain
per unit volume and if this is made larger must be larger in diameter, volume and if
this is made larger must be larger in diameter, thus making the cartridge body larger
in size as a whole.
[0038] As a result, such a chemical cartridge requires a large space for its
accommodation in a blower type chemical diffusing apparatus and thus makes the
apparatus body large in size.
[0039] JP 2002-291392 previously mentioned also discloses a chemical impregnated
body which uses a large number of carrier particles impregnated with a chemical and

retained in a porous receptacle.
[0040] As a result, this requires that the receptacle be large in size and hence in
thickness as well, making here again the body of a blower type chemical diffusing
apparatus as a whole large in size.
[0041] In contrast, the chemical impregnated body if made in the form of a sheet as
a carrier impregnated with a chemical and thereby retaining the chemical can be
sufficiently thin that it holds the apparatus body thin enough.
[0042] However, a chemical impregnated body so made in the form of a sheet is so
weak in rigidity that it cannot sustain itself its given shape. Thus, an attempt is made
to sustain a given shape of a chemical impregnated body by supporting it in its
central, outer peripheral and intermediate regions with its retainer receptacle.
[0043] These regions of the chemical impregnated body supported by the retainer
receptacle are large in surface area and become entirely useless in serving to
emanate and diffuse chemical impregnated in these regions because air cannot pass
through the regions.
[0044] In this connection there is also known a chemical impregnated body as
disclosed in JP H11-92303 A which is in the form of a honeycomb impregnated with
a chemical that is stronger in rigidity and larger in the amount containing chemical
per unit volume than the sheet-like chemical impregnated body.
[0045] However, whichever of sheet-like or honeycomb type, such a conventional
chemical impregnated body once it is used out or spent in a blower type chemical
diffusing apparatus in diffusing chemical into an atmosphere must be thrown away
as waste.
[0046] Such a conventional chemical impregnated body of throwaway type is
unfavorable under social circumstances nowadays at waste and resource-saving
standpoints.
[0047] For this reason, it is conceivable to make spent chemical impregnated body
reusable by impregnating it again with chemical to have it retain the chemical again.
[0048] Then, while it may be possible to make reusable a spent chemical
impregnated body especially if of sheet type by dripping to impregnate it with
chemical and have it retain chemical again, impregnating a honeycomb type

impregnated body, shaped to include a large number of cores, with chemical
requires dipping the honeycomb body in a container filled with a large quantity of
chemical or continuing to supply it with a large quantity of chemical and for a time
period enough to achieve required impregnation. Not only does this require such a
large quantity of chemical but also there will a specialized facility become
mandatory in dealing with the chemical.
[0049] Thus, while a large number of chemical impregnated bodies can be re-
impregnated with chemical and thereby made reusable successively as in a factory
or manufacturing plant without difficulty to meet these requirements, it is altogether
impractical for an individual user to attempt to make a conventional spent chemical
retainer or cartridge reusable because a surplus chemical is wasted and cannot be
dealt with.
Disclosure of the Invention
[0050] It is an object of the present invention to provide a blower type chemical
diffusing apparatus that is simple in structure and low in cost to enable a chemical
cartridge and a battery to be renewed, that is easy to operate in renewing a chemical
cartridge and a battery, that facilitates electrical connection of the battery to the
motor in the blower and yet that is thinned as a whole.
[0051] It is another object of the present invention to provide a blower type chemical
diffusing apparatus that configures the air discharge port so as to discharge air
forcibly in desired directions and, when the apparatus is used worn on the user's
waist, to cause the harmful insect control component to reach the head and feet
quickly, thereby making it effective to control harmful insects from the beginning of
use of the apparatus.
[0052] It is still another object of the present invention to provide a blower type
chemical diffusing apparatus that is smaller in size and light in weight and can be
used comfortably by the user without feeling it disagreeable.
[0053] It is a further object of the present invention to provide a chemical cartridge
that is thinned, that can sustain its given shape, that is easy to handle and free from
contaminating a use's hand and which when used out can be refilled with chemical
and can be reused over and again.

[0054] It is still a further object of the present invention to provide a chemical
cartridge that is large in amount of chemical per unit volume and that can be smaller
in overall size.
[0055] It is yet a further object of the present invention to provide a chemical
impregnated body that can hold its given shape, that can emit the chemical it retains
into an atmosphere efficiently and which when depleted of chemical can be refilled
with chemical by a user easily.
[0056] There is provided in accordance with the present invention in a first aspect
thereof a blower type chemical diffusing apparatus having an apparatus casing body,
an air blower, a chemical cartridge and a battery, characterized in that the apparatus
casing body comprises a first side and a second side counterpart casing body
openably coupled together by a hinge, the first side casing body having a blower
mounting recess, an airflow section and a battery accepting recess, the second side
casing body having an airflow section spaced from the airflow section in the first
side casing body; the air blower has a fan adapted for rotation by a motor, the fan
and the motor being mounted in the blower mounting recess; the chemical cartridge
is disposed between the air blower in the first side casing body and the airflow
section in the second side casing body; the battery is removably accepted in the
battery accommodating recess; the blower mounting and battery accommodating
recesses are spaced apart from each other in a planar direction and positioned not to
overlap in a direction of their thicknesses; and the chemical cartridge contains a
chemical impregnated body having a carrier in the form of a sheet impregnated with
a chemical.
[0057] A blower type chemical diffusing apparatus in this aspect of the present
invention, which permits the chemical cartridge and the battery in the first side
counterpart casing body to be taken out and reloaded simply by turning open the
second side counter part casing body about the hinge from the first side counterpart
casing body, is simple and reduced in cost structurally in enabling these
consumables to be renewed.
[0058] Since opening the second side counter casing body simply allows the
chemical cartridge and the battery to be replace, their replacement is easy.

Moreover, with these two counterpart casings then held coupled together, there can
either of them be lost from the other by no means.
[0059] Moreover, since the motor and the battery for the fan is positioned in the first
side counter part casing body as a common casing, it is altogether easy to electrically
connect them; the motor and the battery can easily be connected electrically.
[0060] Further, since the chemical cartridge is thin and the chemical cartridge and
the battery are positioned without overlapping in a direction of their thicknesses, the
entire apparatus is thinned.
[0061] In a blower type chemical diffusing apparatuses set forth above, the
apparatus casing body may be formed with a hook engagement section to which a
hook of a hanging aid can be engaged and a hole in which a fitting section of
hanging aid can be fitted.
[0062] This feature allows the apparatus to be used while it is hung or left to stand
on a table or the like.
[0063] The present invention also provides in a second aspect thereof a blower type
insect pest control apparatus including: an apparatus casing body having an air inlet
port and a first and a second air discharge port, and a chemical receptacle, a fan and
a motor in the apparatus casing body, the chemical receptacle retaining a chemical
impregnated body impregnated with an insect pest control component, whereby
rotating the fan by the motor allows air to be drawn through the air inlet port and air
drawn to strike on the chemical impregnated body in the chemical receptacle and air
entraining insect pest control component therein from the chemical impregnated
body to emanate and diffuse into an environmental atmosphere, characterized in
that: the first and second air discharge ports are each in the form of a hole having a
radial length and inclined to a circumferential direction in which the fan rotates
whereby when the apparatus is used with the apparatus casing body worn on a user,
air is discharged upwards through the first air discharge port and downwards
through the second air discharge port.
[0064] A blower type insect pest control apparatus in this aspect of the present
invention, which permits air containing an insect pest control component to be
forcibly discharged through the first and second air discharge ports, is

advantageously applicable to where the apparatus is used with its casing body worn
on the user's waist in that air containing an insect pest control component is allowed
to is sue forcibly through the first and second air discharge ports and thus allowed to
reach the user's head and feet quickly
[0065] This provides an apparatus that acts efficiently from the very beginning of its
use.
[0066] In a blower type insect pest control apparatus as set forth above, the first and
second air discharge ports may each be in the form of a hole that communicates its
inner inlet opposed to the fan to its outer outlet open in an outer face of the apparatus
casing body and wherein the hole has an upstream side guide face connecting an
upstream side inlet hole edge of the inner inlet and an upstream side outlet hole edge
of the outer outlet continuously to each other and a downstream side guide face
connecting downstream side inlet hole edge of the inner inlet and a downstream side
outlet hole edge of the outer outlet continuously each other, the upstream side and
downstream side guide faces being each inclined to a circumferential direction in
which the fan rotates.
[0067] With the upstream side and downstream side guide faces each inclined
towards a circumferential direction in which the fan rotates according to this feature,
air containing the insect pest control component can be flushed not only forcibly but
also smoothly.
[0068] In a blower type insect pest control apparatus as set forth above, the
apparatus casing body may be configured to comprise a base member having the
first and second air discharge ports and a fan accommodating chamber, a cover
member having the air inlet port and removably attached to the base member at one
of its sides in a direction of its thickness and a chemical accommodating chamber
disposed between the base and cover members and open to the fan accommodating
chamber. Then, the base member may be formed with a motor accommodating
chamber and a battery accommodating chamber which are open in a rear face of the
base member at its opposite side to the cover member; and the motor and battery
accommodating chambers may be adapted to accommodate the motor and the
battery, respectively, and positioned so that the motor and the battery do not overlap

in a direction of thickness of the base member.
[0069] This feature permits the cover member to be removed to enable the chemical
receptacle to be removed. Also, since the motor and the battery are arranged not to
over lap in a direction of the thickness of the base member, the entire apparatus can
be thinned.
[0070] In a blower type insect pest control apparatus as set forth above, the
apparatus casing body may further be formed with a third air discharge port for
discharging air entraining insect pest control component therein, the third air
discharge port being in the form of a hole having a radial length and being inclined
to a circumferential direction in which the fan rotates whereby when the apparatus is
used with the apparatus casing body worn on a user, air is discharged obliquely
upwards or obliquely downwards through the third air discharge port.
[0071] According to this feature, since air containing the insect pest control
component is allowed to issue through the third air discharge port obliquely upwards
or obliquely downwards, it is possible to send the insect pest control component
more to either the head or the feet than to elsewhere.
[0072] In a blower type insect pest control apparatus as set forth above, the third air
discharge port may be in the form of a hole that communicates its inner inlet
opposed to the fan to its outer outlet open in an outer face of the apparatus casing
body and wherein the hole has an upstream side guide face connecting an upstream
side inlet hole edge of the inner inlet and an upstream side outlet hole edge of the
outer outlet continuously to each other and a downstream side guide face connecting
a downstream side inlet hole edge of the inner inlet and a downstream side outlet
hole edge of the outer outlet continuously each other, the upstream side and
downstream side guide faces being each inclined to a circumferential direction in
which the fan rotates.
[0073] According to this feature, air containing the insect pest control component
can be discharge not only forcibly but also smoothly.
[0074] In a blower type insect pest control apparatus as set forth above, the
apparatus casing body is formed with a subsidiary air discharge port adapted to
discharge air laterally when the apparatus is used with the apparatus casing member

worn on a user, thereby enabling the apparatus to emit air in all directions with
upwards and downwards inclusive.
[0075] According to this feature, when the apparatus is used as worn on the user, the
insect pest control component can be diffused evenly around the user.
[0076] In a blower type insect pest control apparatus as set forth above, the
subsidiary air discharge port may be larger in air resistance than the first and second
air discharge ports or the first, second and third air discharge ports.
[0077] This feature is advantageously applicable where the apparatus is used as
worn on the user's waist in that air containing the insect pest control component can
be emitted less forcibly but adequately laterally of the user and at the same time
forcibly enough to its head and feet.
[0078] In a blower type insect pest control apparatus as set forth above, the
subsidiary air discharge port may be in the form of a hole that communicates its
inner inlet opposed to the fan to its outer outlet open in an outer face of the apparatus
casing body and wherein the hole has an upstream side guide face connecting an
upstream side inlet hole edge of the inner inlet and an upstream side outlet hole edge
of the outer outlet continuously to each other and a downstream side guide face
connecting a downstream side inlet hole edge of the inner inlet and a downstream
side outlet hole edge of the outer outlet continuously each other, the upstream side
and downstream side guide faces being each inclined to a circumferential direction
in which the fan rotates. Then, the subsidiary air discharge port ma be less open in
the direction of rotation of the fan than the first and second air discharge ports or the
first, second and third air discharge ports.
[0079] According to this feature, air can be discharged forcibly through the first and
second or the first, second and third air discharge ports without fail while air is
discharged less forcibly through the subsidiary air discharge port without fail.
[0080] The present invention also provides in another aspect thereof a blower type
chemical diffusing apparatus having an air blower and a chemical receptacle stored
with a volatile chemical, characterized in that it comprises: an apparatus casing body
wherein air is drawn by the fan through an air inlet port and discharged through an
air discharge port while entraining chemical from the chemical receptacle therein; a

power casing body separated from the apparatus casing body for containing a power
supply for the air blower in the apparatus casing body; and a connection cord for
connecting the apparatus casing body and the power casing body to each other and
for electrically energizing the air blower in the apparatus casing body from the
power supply in the power casing body.
[0081] A blower type chemical diffusing apparatus in this aspect of the present
invention is designed to separate the power supply (battery) section as the weightiest
component from the other components and to include them separately in a power
casing body and an apparatus casing body and thereby to reduce the apparatus
casing body in both size and weight as can conveniently be worn on the user's wrist.
Then, the power casing body can be worn separately, e. g., in a pocket in a pant,
trouser or suit, thereby permitting the apparatus to be used comfortably while
relieving the user from feeling of disagreeableness it has had when wearing the
conventional apparatus large in size and heavy in weight. In addition, a connection
cord as set forth is conveniently provided.
[0082] In a blower type chemical diffusing apparatus as set forth above, a
connection cord as set forth may advantageously be such that it can be removably
attached to the apparatus casing body and/or the power casing body.
[0083] This feature allows the connection cord first connected to only either or
neither of the apparatus and power casing bodies to be attached to the other or both
only after they are fitted on, thereby facilitating their individual fitting operations
markedly.
[0084] In a blower type chemical diffusing apparatus as set forth above, it may have
a fitting means for fitting the apparatus casing to an object to be fitted.
[0085] In a blower type chemical diffusing apparatus as set forth above, it may have
a fitting means for fitting the power casing to an object to be fitted.
[0086] In a blower type chemical diffusing apparatus as set forth above, it may have
a fitting means for fitting the connection cord to an object to be fitted.
[0087] These features allow the blower type chemical diffusing apparatus to be
readily set up by suitably fitting the apparatus casing body, the power casing body
and the connection cord individually.

[0088] The present invention also provides in another aspect thereof a chemical
cartridge, characterized in that it comprises: a chemical impregnated body in the
form of an air permeable and liquid absorptive sheet impregnated with a chemical; a
retainer receptacle for retaining the chemical impregnated body, the retainer
receptacle having a hold section for holding an upper and a lower face of the
chemical impregnated body across them and an air passage section through which
air flows; and a space formed between hold section and chemical impregnated body
and opening to an outside through an airflow section formed in the hold section.
[0089] According to this aspect of the present invention, a chemical cartridge is
provided that is thinned by utilizing a chemical impregnated body that is thin in the
form of a sheet held by a retainer receptacle which also serves to sustain its given
shape and to protect the hand from contamination by chemical.
[0090] Also, a volume of chemical retained in those areas of a chemical impregnated
body where it is held by the retainer receptacle and where there is no direct flow of
air is admitted into the space stated where it is entrained in air flowing there and
then discharge into the environmental atmosphere. Hence, substantially no volume
of chemical retained in the chemical impregnated body will become useless.
[0091] In a chemical cartridge as set forth above, the hold section may have: a recess
formed where the hold section is contacting a lower face of the chemical
impregnated body; a space formed between the recess and a lower face of the
chemical impregnated body; and an airflow hole formed, where the hold section is
contacting an upper face of the chemical impregnated body, so that it is opposed to
recess, thereby providing an air flow section.
[0092] According to this makeup of the chemical cartridge, the recess can be used to
pool a liquid chemical poured into it through the airflow hole. The liquid chemical
pooled in the recess is allowed to permeate into the chemical depleted body
progressively and thereby to regenerate into a chemical impregnated body.
[0093] The present invention provides in still another aspect thereof a chemical
cartridge, characterized in that it comprises: a chemical impregnated body in the
form of an air permeable and liquid absorptive sheet impregnated with a chemical;
and a retainer receptacle having a receptacle base member and a cover member for

holding chemical impregnated body wherein: the receptacle base member comprises
a central support section, a peripheral support section and a plurality of intermediate
support sections connecting the central support section to the peripheral support
section to form an airflow passage section, the receptacle base member being formed
with a recess in at least one of upper faces of the central, peripheral and intermediate
sections and with a space between this recess and a lower face of the liquid
impregnated body, cover member comprises a central hold section, a peripheral hold
section and a plurality of intermediate hold sections connecting the central hold
section and the peripheral hold section to each other to form an airflow passage
section, the cover member being formed with an airflow hole in at least one of the
central, peripheral and intermediate hold sections so that it is opposed to the recess,
whereby the receptacle base member and cover member can detachably be fitted
with and coupled to each other to allow air to flow through the airflow passage
section in the receptacle base member and the airflow passage section in the cover
member.
[0094] Here again, a chemical cartridge is provided that can be thin, that can keep a
chemical impregnated body in its given shape and that can protect the hand from
contamination by chemical.
[0095] Also, with its central, peripheral and intermediate sections held with the
central support and hold section, the peripheral support and hold sections and the
intermediate sections of the receptacle base and cover members, a thin chemical
impregnated body can be firmed held and also is easy to handle and maintain.
[0096] Moreover, a volume of chemical retained in at least one area of a chemical
impregnated body where it is held by a support and a hold section and where there is
no direct flow of air is admitted into the recess stated where it is entrained in air
flowing there and then discharge into the environmental atmosphere. Hence,
substantially no volume of chemical retained in the chemical impregnated body will
become useless.
[0097] The recess, here again, can be used to pool a liquid chemical poured into it
through the airflow hole. The liquid chemical pooled in the recess is allowed to
permeate into the chemical depleted body progressively and thereby to regenerate

into a chemical impregnated body.
[0098] In a chemical cartridge as set forth above, the receptacle base member may
be formed with a recess in the central support section and annular recess in the
peripheral support section.
[0099] According to this feature, the annular recess in the peripheral support section
allows liquid chemical to permeate into the chemical depleted body from its whole
periphery uniformly over its entire area.
[0100] In a chemical cartridge as set forth above, the central, peripheral and
intermediate support sections are identical in shape and size to the central, peripheral
and intermediate hold sections, respectively, so that the airflow passage sections are
identical in shape and size to each other.
[0101] This makeup allows air to flow smoothly over the airflow passage sections of
both the receptacle base and cover members and thus chemical in the chemical
impregnated body to emanate and diffuse into the environmental atmosphere
smoothly and efficiently.
[0102] The present invention also provides in a further aspect thereof a chemical
cartridge characterized in that it comprises a chemical impregnated body in the form
of an air permeable and liquid absorptive sheet impregnated with a chemical and a
retainer receptacle for containing the chemical impregnated body wherein the
retainer receptacle is formed in a central area thereof with a liquid pool recess such
that liquid chemical stored in the liquid pool recess is allowed to permeate towards a
peripheral area of the sheet.
[0103] Such a chemical cartridge is, here again, advantageous in that it after use can
be refilled. To this end, liquid chemical is supplied into the recess in the central area
of the retainer receptacle, and liquid chemical pooled in this recess of the retainer
receptacle is allowed to permeate towards its periphery and then into the sheet body
uniformly over its entire area.
[0104] A chemical cartridge can thus be reused over and again.
[0105] Also, by being positioned at a center of the retainer receptacle, the liquid
pool recess in no way impedes the airflow from the fan which can thus be used
without waste and exploited efficiently to diffuse the chemical into the

environmental atmosphere.
[0106] Further, with the chemical impregnated body thin in the form of a sheet
retained by a retainer receptacle, the chemical cartridge can be thinned.
[0107] Moreover, a chemical receptacle as defined above is adequate in keeping a
chemical receptacle in its given shape and is also free from contaminating the hand
with chemical.
[0108] In a chemical cartridge as set forth above, the retainer receptacle may be
formed in a peripheral area with a liquid pool recess such that liquid chemical stored
in the liquid pool recess is allowed to permeate towards a central area of the sheet.
the retainer receptacle is formed in a peripheral area with a liquid pool recess such
that liquid chemical stored in the liquid pool recess is allowed to permeate towards a
central area of the sheet.
[0109] This makeup allows liquid chemical supplied into stored in the liquid pool
recess in a central area of a body to permeate towards its peripheral are and liquid
chemical supplied into and stored in the peripheral area to permeate towards the
central area. Thus, even a large body can be impregnated with chemical relatively
quickly.
[0110] In a chemical cartridge as set forth above, the retainer receptacle for
containing the chemical impregnated body may comprise a receptacle base member
and a cover member; the receptacle base member comprises a central support
section, a peripheral support section and a plurality of connecting sections
connecting the central and peripheral support sections to each other to form an
airflow passage section; the cover member comprises a central hold section, a
peripheral hold section and a plurality of connecting sections connecting the central
and peripheral hold sections to each other to form an airflow passage section; a
central liquid pool recess formed of a recess formed in the central support section
and a supply port formed in central hold section; and a peripheral liquid pool recess
formed of a peripheral recess formed in the peripheral support section and a
peripheral supply section formed in the peripheral hold section.
[0111] With its central and peripheral sections held between the receptacle base and
cover members here, the chemical impregnated body can be held firmly in a

chemical cartridge, facilitating its handling and maintenance.
[0112] The present invention also provides in a further aspect thereof a chemical
cartridge characterized in that it comprises: a chemical impregnated body in the
form of a sheet and a retainer receptacle containing the chemical impregnated body
wherein: the chemical impregnated body comprises a carrier in the form of an air
permeable and liquid absorptive sheet having a localized high liquid retention region
and impregnated with a chemical.
[0113] Here, with the chemical impregnated body being thin in the form of a sheet
and held by its retainer receptacle, a chemical cartridge that is easy to handle can be
provided.
[0114] A chemical cartridge so constructed is, here too, advantageous in that when
its chemical is depleted after use the career can be re-supplied with chemical in the
high .liquid retention region. Liquid chemical impregnated in the high liquid
retention region of the career is then allowed to permeate progressively over into
entire body, thereby regenerating it into a fresh chemical impregnated body. A
chemical cartridge can thus be used over and again.
[0115] Moreover, the career can accept a large quantity of liquid chemical at its high
liquid retention region at a time. Liquid chemical supplied into the high liquid region
can then permeate into it progressively over its entire area. Thus, there is regenerated
a body uniformly impregnated with and retaining chemical.
[0116] In a chemical cartridge as set forth above, a portion of the carrier may be
made larger in thickness than its remaining portions to constitute the high liquid
retention region.
[0117] So made, the high liquid retention region higher in height can provide a sign
that can be visually seen to if liquid chemical has been supplied.
[0118] The present invention provides in an another aspect thereof a chemical
cartridge characterized in that it comprises a chemical impregnated body in the form
of a pleated flat sheet material having a large number of pleats impregnated with a
chemical, the pleats are formed by alternating mountain fold and valley fold of the
sheet material at certain widths, the sheet material itself being air permeable and
liquid absorptive, the pleated sheet material having a peripheral area jointed to

prevent the pleats from getting out of shape.
[0119] With a chemical cartridge so made its chemical impregnated body can retain
an increased amount of chemical per unit volume and the cartridge itself can thus be
made smaller in size.
[0120] In particular, a chemical cartridge that retains a large amount of chemical but
is thin can thus be provided.
[0121] A pleated sheet material whose periphery is processed to prevent the pleats
from getting out of shape allows air"to flow sub substantially uniformly over its
entire area and thus chemical to diffuse substantially uniformly from the entire
chemical impregnated body.
[0122] A chemical cartridge as set forth above may further comprise a fixture for
holding a peripheral area of the chemical impregnated body.
[0123] A chemical cartridge as set forth above may further comprise a receptacle
containing the chemical impregnated body and having an airflow section.
[0124] Then, with the fixture or receptacle that can be held by the hand a chemical
cartridge can be provided that is easy to handle while protecting the hand from
contamination by chemical retained by the chemical impregnated body.
[0125] The present invention also provides in another aspect thereof a chemical
cartridge characterized in that it comprises: a chemical impregnated body in the
form of a pleated flat sheet material having a large number of pleats impregnated
with a chemical, the pleats are formed by alternating mountain fold and valley fold
of the sheet material at certain widths, the sheet material itself being air permeable
and liquid absorptive; and a fixture for holding a peripheral area of the pleated sheet
material with that area squeezed to keep the pleats not getting out of shape.
[0126] With a chemical cartridge so made its chemical impregnated body can retain
an increased amount of chemical per unit volume and the cartridge itself can thus be
made smaller in size.
[0127] In particular, a chemical cartridge that retains a large amount of chemical but
is thin can thus be provided.
[0128] Also, with its peripheral area squeezed to keep the pleats not getting out of
shape, the pleated sheet material allows air to flow substantially uniformly over its

area and thus the chemical to diffuse substantially uniformly from the entire
chemical impregnated body.
[0129] Further, with the fixture that can be held by the hand, a chemical cartridge
can be provided that is easy to handle while protecting the hand from contamination
by chemical.
[0130] Moreover, with its peripheral area squeezed with the fixture to keep the
pleats not getting out of shape, the pleated sheet material need not be jointed
separately and can be manufactured with greater easiness.
[0131] The present invention also provides in a further aspect thereof a chemical
cartridge characterized in that it comprises: a chemical impregnated body in the
form of a pleated flat sheet material having a large number of pleats impregnated
with a chemical, the pleats are formed by alternating mountain fold and valley fold
of the sheet material at certain widths, the sheet material itself being air permeable
and liquid absorptive; and a receptacle containing the chemical impregnated body
and having an airflow section.
[0132] With a chemical cartridge so made its chemical impregnated body can retain
an increased amount of chemical per unit volume and the cartridge itself can thus be
made smaller in size.
[0133] In particular, a chemical cartridge that retains a large amount of chemical but
is thin can thus be provided.
[0134] Further, with the receptacle that can be held by the hand, a chemical cartridge
can be provided that is easy to handle while protecting the hand from contamination
by chemical.
[0135] The present invention also provides in yet another aspect thereof a chemical
cartridge characterized in that it comprises: a chemical impregnated body in the
form of a pleated flat sheet material having a large number of pleats impregnated
with a chemical, the pleats are formed by alternating mountain fold and valley fold
of the sheet material at certain widths, the sheet material itself being air permeable
and liquid absorptive, the pleated sheet material being deformable into a hollow
cylindrical shape; and a receptacle configured to include an annular hollow and an
axial hollow, to allow air to flow through these hollows, and to accept the chemical

impregnated body in the annular hollow.
[0136] With a chemical cartridge so made its chemical retainer can retain an
increased amount of chemical per unit volume and the cartridge itself can thus be
made smaller in size.
[0137] In particular, a chemical cartridge that retains a large amount of chemical but
is thin can thus be provided.
[0138] Further, with the receptacle that can be held by the hand, a chemical cartridge
can be provided that is easy to handle while protecting the hand from contamination
by chemical.
[0139] According to a chemical cartridge so constructed, a pleated sheet material
which itself is liquid absorptive can, after use or depletion be, be refilled and
thoroughly impregnated with liquid chemical; it can be reused over and again.
[0140] The present invention also provides in yet another aspect thereof a chemical
impregnated body characterized in that it comprises: a honeycomb body having a
large number of honeycomb cores open to a pair of opposed side faces thereof in a
direction of its thickness and providing airflow passages parallel to the thickness
direction; and a sheet body disposed adjacent to one of side faces over an entire area
thereof wherein the honeycomb and sheet bodies are impregnated with a chemical.
[0141] A chemical impregnated body as mentioned above can sustain its given
shape wherein a honeycomb body acts also to reinforce a body.
[0142] A honeycomb body through which air flows smoothly does not impede air
flowing through a sheet body; the chemical retained in the honeycomb and sheet
bodies can be diffused efficiently in to the environmental atmosphere.
[0143] When the honeycomb and sheet bodies are depleted of chemical, the sheet
body can be supplied with chemical to allow the supplied chemical to permeate into
the sheet body itself and also into the honeycomb progressively.
[0144] Thus, the user can readily regenerate a chemical impregnated body from a
depleted body by simply a sheet body in the depleted body with chemical to allow
the supplied chemical to permeate into the sheet and honeycomb bodies.
[0145] A chemical impregnated body as set forth above may further comprise a
retainer receptacle for retaining therein honeycomb and sheet bodies and holding

them in intimate contact with each other.
[0146] With a honeycomb and a sheet body brought together into intimate contact,
liquid chemical supplied to the sheet body is allowed to permeate into the
honeycomb body without fail.
[0147] In a chemical impregnated body as set forth above, the receptacle comprises
a receptacle base member having a support section for supporting the sheet body;
and a hold member for fitting engagement with the receptacle base member to hold
the honeycomb and sheet bodies in intimate contact with each other.
[0148] According to this makeup, a honeycomb and a sheet body are brought into
intimate contact without fail when the sheet body is supported from a support
section of a receptacle base member which is then fitted with and thereby coupled to
a hold member.
[0149] In a chemical impregnated body as set forth above, the support section is
formed with a liquid chemical pool section and a chemical inlet port for supplying
liquid chemical into the liquid chemical pool section.
[0150] This makeup facilitates supplying a honeycomb body with liquid chemical
when liquid chemical is poured into a liquid chemical pool section through a supply
inlet and the supplied liquid pooled is allowed to permeate into the sheet body over
its entire area.
Brief Description of the Accompanying Drawings
[0151] The present invention will better be understood from the following detailed
description and the drawings attached hereto showing certain illustrative forms of
implementation of the present invention. In this connection, it should be noted that
such forms of implementation illustrated in the accompanying drawings hereof are
intended in no way to limit the present invention but to facilitate an explanation and
understanding thereof. In the drawings,
Fig. 1 is a perspective view illustrating a blower type chemical diffusing apparatus
that represents a first form of implementation of the present invention, the apparatus
being shown in its closed state;
Fig. 2 is a longitudinal cross sectional view of the apparatus shown in Fig. 1;
Fig. 3 is a rear view of the apparatus shown in Fig. 1;

Fig. 4 is a perspective view of the apparatus of Fig. 1 shown in its open state also
with a chemical retainer shown as broken;
Fig. 5 is a perspective view of the apparatus while it is hung;
Fig. 6 is an elevational side view of the apparatus in use;
Fig. 7 is a longitudinal cross sectional view illustrating a blower type insect pest
control apparatus that represents a second form of implementation of the present
invention;
Fig. 8 is a cross sectional view of the apparatus taken alone the line VIII VIII in Fig.
7;
Fig. 9 is a right hand side cross sectional view of the apparatus shown in Fig. 7;
Fig. 10 is a perspective view illustrating a hanging gadget used in the apparatus of
Fig. 7;
Fig. 11 is a exploded perspective view of a chemical receptacle;
Fig. 12 is a cross sectional view of a region of an air discharge port illustrating a first
modification of the blower type insect pest control apparatus;
Fig. 13 is a cross sectional view of a region of an air discharge port illustrating a
second modification of the blower type insect pest control apparatus;
Fig. 14 is a perspective view illustrating a blower type chemical diffusing apparatus
that represents a third form of implementation of the present invention;
Fig. 15 is a side cross sectional view of the blower type chemical diffusing apparatus
shown in Fig. 14;
Fig. 16 is a plan view, in part shown in cross section, of the blower type chemical
diffusing apparatus shown in Fig. 14;
Fig. 17 is a decomposed perspective view illustrating a chemical receptacle;
Fig. 18 is a perspective view illustrating another fitting means that can be used with
a blower type chemical diffusing apparatus according to the present invention;
Fig. 19 is an explanatory view illustrating an example of use of a blower type
chemical diffusing apparatus according to the present invention;
Fig. 20 is an explanatory view illustrating another example of the separation of a
power casing body from an apparatus casing body;
Fig. 21 is an explanatory view illustrating another example of use of a blower type

chemical diffusing apparatus according to the present invention;
Fig. 22 is an explanatory view illustrating still another example of use of a blower
type chemical diffusing apparatus according to the present invention;
Fig. 23 is a perspective view illustrating a conventional blower type chemical
diffusing apparatus;
Fig. 24 is a side cross sectional view of the apparatus shown in Fig. 23;
Fig. 25 is a cross sectional view illustrating a blower type chemical diffusing
apparatus using a chemical cartridge that represents a forth form of implementation
of the present invention;
Fig. 26 is a top plan view of the chemical cartridge shown in Fig. 25;
Fig. 27 is a cross sectional view of the chemical cartridge taken along the line
XXVII - XXVII in Fig. 26;
Fig. 28 is a top plan view illustrating a receptacle base member in the chemical
cartridge shown;
Fig. 29 is a cross sectional view of the base member taken along the line XXIX
XXIX in Fig. 28;
Fig. 30 is a top plan view illustrating a cover member;
Fig. 31 is a broken perspective view of the chemical cartridge shown in Fig. 25;
Fig. 32 is a top plan view illustrating a modification of the chemical cartridge
according to the fourth form of implementation of the present invention;
Fig. 33 is a cross sectional view of the modified chemical cartridge shown in Fig.
32;
Fig. 34 is a cross sectional view illustrating a blower type chemical diffusing
apparatus using a chemical cartridge that represents a fifth form of implementation
of the present invention;
Fig. 35 is a decomposed perspective view of the chemical cartridge shown in Fig.
34;
Fig. 36 is a top plan view illustrating a modification of the chemical cartridge shown
in Fig. 35;
Fig. 37 is a cross sectional view of the chemical cartridge taken along the line
XXXVII-XXXVII in Fig. 36;

Fig. 38 is a top plan view illustrating a second modification of the chemical cartridge
according to the fifth form of implementation of the present invention;
Fig. 39 is a cross sectional view of the modified chemical cartridge taken along the
line XXXIX XXXIX in Fig. 38;
Fig. 40 is a top plan view illustrating a third modification of the chemical cartridge
according to the fifth form of implementation of the present invention;
Fig. 41 is a cross sectional view of the modified chemical cartridge taken along the
line XLI XLI in Fig. 40;
Fig. 42 is a top plan view illustrating a fourth modification of the chemical cartridge
according to the fifth form of implementation of the present invention;
Fig. 43 is a cross sectional view of the modified chemical cartridge taken along the
line XLIII - XLIII in Fig. 42;
Fig. 44 is a cross sectional view illustrating a blower type chemical diffusing
apparatus using a chemical cartridge that represents a sixth form of implementation
of the present invention;
Fig. 45 is a cross sectional view of the chemical cartridge shown in Fig. 44;
Fig. 46 is a decomposed perspective view of the chemical cartridge shown in Fig.
44;
Figs. 47A and 47B are a top plan and a cross sectional view illustrating a first
modification of the chemical cartridge according to the sixth form of implementation
of the present invention;
Figs. 48A and 48B are atop plan and a cross sectional view illustrating a second
modification of the chemical cartridge according to the sixth form of implementation
of the present invention;
Fig. 49 is a top plan view illustrating a third modification of the chemical cartridge
according to the sixth form of implementation of the present invention;
Fig. 50 is a top plan view illustrating a fourth modification of the chemical cartridge
according to the sixth form of implementation of the present invention;
Fig. 51 is a cross sectional view illustrating a fifth modification of the chemical
cartridge according to the sixth form of implementation of the present invention;
Fig. 52 is a cross sectional view illustrating a blower type chemical diffusing

apparatus using a chemical cartridge that represents a seventh form of
implementation of the present invention;
Fig. 53 is a decomposed perspective view of the chemical cartridge shown in Fig.
52;
Fig. 54 is a top plan view of the chemical cartridge shown in Fig. 52;
Fig. 55 is a cross sectional view of the chemical cartridge taken along the line LV -
LV in Fig. 54;
Fig. 56 is a cross sectional view of the chemical cartridge taken along the line LVI -
LV1 in Fig. 54;
Fig. 57 is a cross sectional view illustrating a modification of the chemical cartridge
shown in Fig. 55;
Fig. 58 is a plan view illustrating another form of the fixture that can be used in a
chemical cartridge as shown in Fig. 52 to 57:
Fig. 59 is a cross sectional view of the fixture taken along the line LIX LIX in Fig.
58;
Fig. 60 is a decomposed perspective view illustrating a chemical cartridge having a
chemical impregnated body different in shape;
Fig. 61 is a cross sectional view illustrating a second modification of the chemical
cartridge of the type shown in Fig. 52;
Fig. 62 is a cross sectional view illustrating a third modification of the chemical
cartridge of the type shown in Fig. 52;
Fig. 62 is a cross sectional view illustrating a third modification of the chemical
cartridge of the type shown in Fig. 52;
Fig. 63 is a cross sectional view illustrating a fourth modification of the chemical
cartridge of the type shown in Fig. 52;
Fig. 64 is a cross sectional view illustrating an apparatus casing body and a
receptacle using the chemical cartridge shown in Fig. 63;
Fig. 65 is cross sectional view illustrating a blower type chemical diffusing
apparatus using a chemical cartridge that represents a eighth form of implementation
of the present invention;
Fig. 66 is a bottom plan view of a first modification of the chemical cartridge shown

in Fig. 65;
Fig. 67 is a top plan view of the chemical cartridge shown in Fig. 66;
Fig. 68 is a cross sectional view of the chemical cartridge taken along the line
LXVIII LXVIII in Fig. 67;
Fig. 69 is a top plan view
Fig. 70 is a cross sectional view of the chemical cartridge taken along the line LXX -
LXX in Fig. 69;
Fig. 71 is a top plan view of a third modification of the chemical cartridge shown in
Fig. 65;
Fig. 72 is a cross sectional view of the chemical cartridge taken along the line
LXXII - LXXII in Fig. 71;
Fig. 73 is a top plan view of a fourth modification of the chemical cartridge shown
in Fig. 65; and
Fig. 74 is a cross sectional view of the chemical cartridge taken along the line
LXXIV - LXXIV in Fig. 73.
Best Modes for Carrying Out the Invention
[0152] At the outset, mention is made of a first form of implementation of the
present invention.
[0153] Referring to Figs. 1 to 4, a blower type chemical diffusing apparatus
according to the first form of implementation of the invention includes an apparatus
or casing main body 1, and an air blower 2, a chemical cartridge 3 and a battery 4
which are contained in the casing main body 1.
[0154] The casing main body 1 comprises a first and a second counterpart casing
member 10 and 11 openably interconnected by a hinge 12 so they can make the
casing main body 1 open and closed.
[0155] The first casing member 10 is extremely small in thickness compared with its
planar size, namely thin plate-like. It is formed with a blower mounting recess 13,
air passages 14 open to the blower mounting recess 13, and a battery
accommodating recess 15. The blower mounting recess 13 and the battery accepting
recess 15 are each open to an inner side lateral face 10a of the first casing member
10 and are mutually spaced apart in a plane thereof so that they do not lie one above

the other in a direction of its thickness. The air passages 14 open the blower
mounting recess 13 to an outer surface 10b of the first casing member 10.
[0156] The second casing member 11 is extremely small in thickness compared with
its planar size, namely thin plate-like. It can take two positions, viz. one in which it
covers, and the other in which it uncovers, both the blower mounting recess 13 and
the battery accommodating recess 15. The second casing member 11 is formed with
air passages 16 in an area thereof that is opposed to the blower mounting recess 13
of the first casing member 10.
[0157] The air blower 2 includes a fan 20 and a motor 21 mounted as received
within the blower mounting recess 13 and is designed so that the rotation of the fan
20 by the motor 21 when the second casing member 11 is in its closed state causes
air to flow over the air passages 14 of the first casing member 10 and the air
passages 16 of the second casing member 11.
[0158] For example, air may be drawn through the air passages 16 of the second
casing member 11 and discharged through the air passages 14 of the first casing
member 10 into the atmosphere, or vice versa.
[0159] The chemical cartridge 3 includes a chemical impregnated body that is a
carrier in the form of a sheet impregnated with a chemical placed on an annular edge
in the blower mounting recess 13 and, when the second casing member 11 is brought
into its closed position, is held against the annular edge with an inner face 11b
thereof.
[0160] The battery accommodating recess 15 provides a space in which the battery 3
in the form of dry cells can removably be set.
[0161] With the apparatus configured as mentioned above, bringing the second
casing member 11 into its open position relative to the first casing member 10
allows removing, setting in place and exchanging the cartridge 3 and the battery 4.
[0162] And, bringing the second casing member 11 into its close position relative to
the first casing member 10 followed by driving the motor 21 to rotate the fan 20
permits air to pass through the chemical impregnated body in the chemical cartridge
and air having chemical entrained therein to be emanated and diffused into an
environmental atmosphere.

[0163] Further, the apparatus casing body 1 even in its closed position is itself
extremely small in thickness compared with its planar size, namely thin and plate-
like. Here, its planar size is as large as slightly larger than those of the fan 20 and the
battery 4, namely a planar size practically without having any area other than the
area in which the fan 20 and the battery 4 can just be accommodated within the
apparatus casing body 1 (thus, omitting any useless planar space).
[0164] Thus, the apparatus casing body 1 is made thin and compact, permitting the
blower type chemical diffusing apparatus to be made thin and compact.
[0165] This makes the apparatus easy to handle and renders its required molds
smaller in size and stock material less in amount, thus reducing its cost of
manufacture as well.
[0166] Specifically, as seen in its planar shape the apparatus casing body 1
comprises a first region 1a that is nearly circular, a second region 1b that is nearly
rectangular and a third or intermediate region 1c interconnecting the first and second
regions 1 a and 1 b, and as a whole is nearly rectangular except for the first region 1 a
that is nearly circular.
[0167] The first, nearly circular region 1a has a planar size that is slightly larger than
the outer diameter of the fan 20, the second, nearly rectangular region 1b has a
planar size that is slightly larger than that of the battery 4 and the intermediate
region 1c is in the planar form of a pair of deltas simply to make the first and second
regions contiguous so that there is no useless space in contour and volume of the
apparatus.
[0168] As a result, the apparatus casing body 1 has its surface contour appropriately
convexed and concaved, giving aesthetic accentuation to its overall shape and
making the apparatus visually attractive to the user.
[0169] In contrast, the casing body of a conventional apparatus of this type was is
monotonous in its surface contour without such an accentuation so that its
appearance was not much attractive to the user.
[0170] The air passages 14 can be formed not only in the first region 1a but also in
both sides of the intermediate region 1c so that chemical can be emanated and
diffused towards a greater number of directions.

[0171] Mention is next made of further configurations of the apparatus components.
[0172] The first casing member 10 includes an outer shell 17, an inner shell 18 and
an inner plate 19. The outer shell 17 is dish shaped comprising a surface plate 17a
provided with side plates 17b along it and formed with air passage cutouts 50 and
also with a first and a second engagement section 51 and 52
[0173] The inner shell 18 comprises a base plate 18a provided with a side plate and
is fitted into the outer shell 17.
[0174] The base plate 18a is formed with a recess 53 open to the surface plate 17a of
the outer shell 17. The motor 21 is received and mounted in position in the recess 53
from which its output shaft 21a projects passing through the base plate 18a and has
the fan 20 attached thereto. The fan 20 is here a sirocco fan but may be a propeller
fan or the like.
[0175] The side plate 18b is provided with a plurality of draft guides 54 and also
with an engaging section 55 for engagement with the engagement section 51.
[0176] The inner plate 19 has an annular reentrant 56 defining a circular opening 57
and is formed with an engaging section 58 for engagement with the engagement
section 52 of the outer shell 1 to cover the fan 20.
[0177] The makeup described above allows the air blower 2 to be readily set in
position in the first casing member 10, namely by accommodating and mounting the
motor 21 in position in the recess 53 of the inner shell 18 and fitting the inner shell
18 in this state into the outer shell 17, followed by attaching the fan 20 and then
fitting the inner plate 19. Not only is this structure easy to assemble but also it looks
agreeable with the motor 21 placed out of view by the outer shell 17.
[0178] The outer shell 17 and the inner shell 18 also make the battery
accommodating recess 15.
[0179] The second casing member 11 is dish shaped comprising a surface plate 1 lb
provided with a side plate 11c, which is formed with engagement section 59 that is
designed to engage with the engagement section 55 of the inner shell 18. The surface
plate 11 b has a round raised area 11 d formed with the air passages 16, e. g., in the
form of a plurality of slits as shown.
[0180] The side plate 17b of the outer shell 17 in the first casing member 10 is

formed midway of its length with a cutout 17c while the side plate 11c of the second
casing member 11 is likewise formed midway of its length with a cutout 11e, these
cutouts being formed as opposed to each other to provide the air passages 14, as
shown in Fig. 1.
[0181] The chemical cartridge 3 includes a round dish-shaped receptacle 30 with its
one side open, a disk-shaped chemical impregnated body 31 loaded in this round
receptacle 30 and a round lid 32 fitted into the latter. Here, the round receptacle 30
and round lid 32 are formed with air passages 30a air passages 32a, respectively.
[0182] The chemical impregnated body 31 is a chemical carrier in the form of a
sheet-like or thin disk impregnated with a chemical.
[0183] The round receptacle 30 is placed on the annular reentrant 56 of the inner
plate 19 so as to fit with and be carried by it. Then, bringing the second casing
member 11 into its closed position places its round raised area 1 Id in opposition to
the round lid 32.
[0184] This sets the round receptacle 30 (and the chemical cartridge 3) in position
firmly in the apparatus casing body 1.
[0185] The air blower 2 and the battery 4 are spaced apart from each other in planar
position and do not overlap in the direction of thickness while the chemical cartridge
3 using a chemical impregnated body or carrier in the form of a sheet is thin.
[0186] These in combination give rise to a blower type chemical diffusing apparatus
which as a whole is thin.
[0187] The apparatus casing body 1 so that it can be used in suspension is provided
on its side face with a hanger loop 60 and also in its bottom face with a hanger
opening 61, which can be alternatively used for hooking.
[0188] The hanger loop 60 may be formed, for example, of a U-shaped piece 62
raised from and made integral with one of the side plates 18b of the inner shell 18 in
the first casing member 10 of the apparatus casing body 1.
[0189] The hanger opening 61 may be formed in a nearly L-shaped attachment piece
63 raised from and made integral with the surface plate 17a of the outer shell 17 in
the first casing member 10 of the apparatus casing body 1.
[0190] As shown in Figs. 5 and 6, a hanger (hanging utensil) 64 may be used that

has a first hook 60 and a second hook 66 which are to engage the pieces 62 and 63
for the hanger loop 65 and the hanger opening 61, respectively.
[0191] So equipped as mentioned above, a blower type chemical diffusing apparatus
according to the present invention can be carried by the user by being hung on the
hanger 64 which as shown in Fig. 5 can in turn be hung on a belt the user wears.
[0192] Also, the use of the hanger 64 as a fall protector for the apparatus casing
body 1 upon inserting the hook 66 in the opening 61 and erecting the casing body 1
longitudinally to stand on a supporting plane as shown in Fig. 6 allows a blower type
chemical diffusing apparatus according to the present invention to be used as it rests
on a floor, table or the like.
[0193] Further, a string can be tied to the hanger loop 60 and then be used to hang
the apparatus on a wall or the like or on a part of the body or a piece of clothing of
the user.
[0194] Also, the apparatus that is thus thin and compact can be readily handled by
any user from a child to a grownup, with its casing body attached to the waist, neck,
arm or leg.
[0195] In Figs. 1 and 4, a switch 5 and a lamp 6 are also shown. The switch 5 is
turned on and off to energize and deenergize the motor 21 while turning the lamp 6
on and off, respectively.
[0196] The sheet-like carrier used as impregnated with a chemical in the present
invention is illustratively made of a porous paper, cloth, woven or nonwoven fabric
or net material. Taking its stability as it is placed into consideration, it is desirable
that the chemical impregnated body for use be firmly held by a receptacle and its lid
or coating a portion, e. g., an outer peripheral portion, of the sheet-like chemical
impregnated body with a resin or the like. Further, considering its portability, it is
desirable that the carrier be a thin sheet having a thickness of 2 to 5 mm and an area
of 700 to 3,000 mm<2>.
[0197] The chemical for use in the present invention may be an insect pest control
agent such as an insecticide, miticide, vermin or pest repellent, vermin growth
retardant or sucking inhibitor, aromatic, deodorant or bactericide, and should be
volatile.

[0198] Such chemicals, if used to kill insects, may be a variety of volatile
insecticides so far known, of which pyrethroid, carbamate, organophosphorus
chemicals and so on can be listed, further of which pyrethroid chemicals can
preferably be used as generally high in safety.
[0199] Further, such specific chemicals as methofluthrin, transfluthrin, empenthrin,
terallethrin and profluthrin which are highly active and which in a small amount
exhibit efficaciousness can desirably be used as they can make the chemical carrier
thin and small.
[0200] The power supply for the motor 21 can illustratively be one or more of dry
cells such as alkaline dry cells of size AAAA, AAA, AA, C and D, manganese dry
cells of size AAAA, AAA, AA, C and D, rectangular-shaped alkaline cell (9 volts),
lithium cells and lithium button cells which can be used singly or in combination.
[0201] The fan 20 for use in the present invention can be a centrifugal fan which
preferably has a size as stated below.
[0202] The centrifugal fan preferably has a diameter D of 30 mm to 60 mm. If it is
smaller in diameter, then its rotation will not produce a sufficient centrifugal force,
which requires larger energy to rotate it more rapidly and deteriorates energy
efficiency.
[0203] This also reduces the volume of the internal space that it takes, which in turn
reduces choices of the motor 21. Conversely, making the fan larger in D than 60 mm
will make the apparatus larger in size and its portability poor.
[0204] The centrifugal fan preferably has a ratio: D/d of outer diameter D to inner
diameter d that is 1.05 to 1.6. If it is smaller than 1.05, then a consequential
reduction of a fan blade in width will not produce enough wind. Conversely, if it
exceeds 1.6, then the resistance to rotation that the fan blade receives will become
excessive, again deteriorating its energy efficiency.
[0205] The centrifugal fan preferably has an effective height of blade h ranging
between 2 mm to 10 mm. If it is lower than 2 mm in height, the blade will not have
enough surface area to produce adequate wind. Conversely, not only will a height
more than 10 mm make the fan inadequate to make the apparatus thin but also a
resultant increase in resistance to rotation will reduce its energy efficiency.

[0206] If the motor is placed anywhere other than in the common internal space in
which the centrifugal fan is placed, there will be no bad influence on wind inlet but
it is then required that the apparatus have a thickness at the minimum that is the sum
of those of the fan and motor. This has been the way adopted by the prior art,
however, in failing to make an apparatus of this type so small in both thickness and
size as here.
[0207] If the motor housing (i. e., the recess 53 in Fig. 2) in which the motor 21 is
accepted takes more than 60 % of the internal space taken to accept the centrifugal
fan, then the balance space will be insufficient for the fan to develop enough air flow
and operate efficiently.
[0208] Accordingly, the motor housing (i. e., the recess 53 in Fig. 2) stored with the
motor 21 should be sized to take a volume within 60 % of the internal space for the
centrifugal fan to make the apparatus as a whole thin and small in size while
operating efficiently to diffuse a chemical.
[0209] This proportion, 60 %, of space occupancy of the motor housing (i. e., the
recess 53 in Fig. 2) should preferably be approached.
[0210] An explanation is next given in respect of a second form of implementation
of the present invention.
[0211] Referring to Figs. 7, 8 and 9, there is shown an apparatus casing body 101
having a chemical receptacle (chemical cartridge) 102, a fan 103 and a motor 104
stored therein whereby with the fan 103 rotated by the motor 104 air is drawn
through air inlet ports 105 into the inside of the chemical receptacle 102 and strikes
on the chemical receptacle 102 having a chemical impregnated body impregnated
with a chemical that is an insect pest control component). Air then entraining therein
such chemical from the chemical impregnated body in the chemical receptacle 102
is discharged through a first and a second air discharge port 106 and 107 into the
outside of the casing body 101.
[0212] When the apparatus is used with the casing body 101 worn and carried by the
user, air containing the insect pest control component or chemical is discharged both
through the first air discharge port 106 upwards and through the second air discharge

port 107 downwards.
[0213] The first and second air discharge ports 106 and 107 are each in the form of
an inclined hole having a radial length and with an inlet 110 that lies inner and open
to the fan 103 and an outlet 111 that lies outer and open in an outer face 101 a of the
casing body 101. In each of the first and second air discharge ports 106 and 107, the
outer outlet 111 is defined with its upstream and downstream side outlet hole edges
111a and 111b while the inner inlet 110 is defined with its upstream and
downstream side inlet hole edges 110a and 110b. In each of the first and second air
discharge ports 106 and 107, an upstream side guide face 112 connects the upstream
side inlet hole edge 110a in the inner inlet 110 and the upstream side outlet hole
edge 11 la to each other while a downstream side guide face 113 connects the
downstream side inlet hole edge 110b and the downstream side outlet hole edge
111 b to each other.
[0214] In each of the first and second air discharge ports 106 and 107, the upstream
side guide face 112 is inclined so that the upstream side outlet hole edge Ilia lies
downstream of the upstream side inlet hole edge 110a, the guide face 112 being
preferably arcuate.
[0215] In each of the first and second air discharge ports 106 and 107, the
downstream side guide face 113 is inclined so that the downstream side outlet hole
edge 11 lb lies downstream of the downstream side inlet hole edge 110b, the guide
face 113 being preferably arcuate.
[0216] The upstream side inner hole edge 110a in the first air discharge port 106 (e.
g., the upstream side air discharge port) and the downstream side inner hole edge
110b in the second air discharge port 107 (e. g., the downstream side air discharge
port) lie preferably close to, and more preferably also act as, the downstream side
inlet hole edge 110b in the second air discharge port 107 and the upstream side inlet
hole edge 110a in the first air discharge port 106, respectively.
[0217] Here, the terms "upstream" and "downstream" are used in relation to the
direction in which the fan 103 is rotated.
[0218] Also, the term "inclined" is used to the state of being inclined to a radial
direction.

[0219] In other words, the first and second air discharge ports 106 and 107 are each
in the form of a hole inclined to a direction of rotation of the fan.
[0220] With the makeup described above, the rotation of the fan 103 causes air to
issue forcibly through the first and second air discharge ports 106 and 107 as
indicated by the arrows a and b.
[0221] Thus, when the apparatus is used with the casing body 101 attached to the
waist of a user, air containing an insect pest control component is allowed to issue
forcibly towards his/her head and feet. Since the insect pest control component is
therefore allowed to reach the head and feet quickly, it is possible to protect the user
from harmful insects immediately after the apparatus begins to be used.
[0222] Mention is next made of specific configurations of apparatus components.
[0223] The apparatus casing body 101 comprises a base member 120 and a cover
member 121 removably attached thereto and is provided with a fan, a chemical and a
motor accommodating chamber 122, 123 and 124.
[0224] The fan accommodating chamber 122 is round in which a fan 103 is rotatably
mounted. The fan accommodating chamber 122 has a round peripheral face 122a in
which are open the first and second air discharge ports 106 and 107, or their
respective inner inlets 110.
[0225] Communicating with the fan accommodating chamber 122, the chemical
accommodating chamber 123 is opposed and defined with the cover member 121,
the cover member 121 being formed with the air inlet ports 105.
[0226] The motor accommodating chamber 124 is formed in the base member 120
by opening in its rear face 120a and is partitioned from the fan accommodating
chamber 122 by a wall of the base member 120, through which the output shaft 104a
of a motor 104 is passed projecting into the fan accommodating chamber 122
wherein it is coupled to the fan 103.
[0227] Also lying in the base member 120 is a battery accommodating section 126
that is formed so as not to open the fan accommodating chamber 122 and further not
to overlap the motor accommodating chamber 124 in the direction of their
thicknesses. The battery accommodating section 126 is formed in the base member
120 as a recess open to its rear face 120a and spatially continuous with the motor

accommodating chamber 124.
[0228] In this battery accommodating section 126, typically in two compartments
thereof disposed as shown across the motor accommodating chamber 124 are
accepted two battery cells 127, respectively.
[0229] With this battery or these battery cells 127, the motor 104 is energized and
driven.
[0230] With the casing body 101 constructed as mentioned above, its thickness H
can be minimized since the battery 127 and the motor 104 can no longer overlap in
its thickness direction.
[0231] Further, the motor accommodating chamber 124 and the battery
accommodating section (recesses or compartments) which are open in the rear face
120a of the base member 120 can be with their cap or caps for closure.
[0232] The casing body 101 is also provided in its base member 120 with a hanger
loop 128 and a hanger hole 129.
[0233] The hanger loop 128 as shown in Fig. 7 enables the casing body 101 to be
hung on a hanging utensil 130 which can in turn be attached to or clipped on a user's
belt or the like in use of the apparatus.
[0234] The hanging utensil 130 as shown in Fig. 10 has at its one end a hook 131
that can engage the hanger loop 128 to hook the casing body 101 on the hanging
utensil 130, which has at its other end another hook 132 that can be fitted into the
hole 129.
[0235] With the hook 132 fitted in the hole 129 as shown in Fig. 7, therefore, the
utensil 130 when oriented to stand as indicated by the imaginary line with the hook
131 placed in contact with a supporting plane such as a table can also be used to
support the casing body 101, namely the apparatus placed on thereon.
[0236] Of course, the apparatus can also be used with the rear face 120a of the base
member 120 placed on such a supporting surface.
[0237] The chemical receptacle 102 as shown in Fig. 11 comprises a round dish-
shaped receptacle 140 with its one side open and has a disk-shaped chemical
impregnated body 141 loaded in this round receptacle 140 and a round lid 142 fitted
into the latter. Here, the round receptacle 140 and round lid 142 are formed with air

passages 140a air passages 142a, respectively.
[0238] The chemical impregnated body 141 is a chemical carrier in the form of a
sheet-like or thin disk impregnated with a chemical.
[0239] The round receptacle 140 is placed on the annular reentrant 143 formed in a
front face 120b of the base member 120 so as to fit with and be carried by it.
[0240] As mentioned above, the chemical receptacle 102 using a chemical integrate
body 141 in the form of a sheet-like carrier impregnated with an insect pest control
component is thin and can make the apparatus casing body 101 small in thickness H.
[0241] Mention is next made of further details of the first and second air discharge
ports 106 and 107.
[0242] Referring to Fig. 8, the fan 103 has its outer peripheral face 103a which is
preferably spaced from the upstream side inlet hole edge 110a by a distance A
ranging from 0.1 mm to 5 mm.
[0243] The fan 103 has its center 103b which is preferably spaced from the upstream
side inlet hole edge 110a by a distance R having relationship: r = 1.05 X R ~ 2.5 X R
where r is distance between the center 103 b of the fan 103 and the upstream side
outlet hole edge 111a.
[0244] This converges wind flows produced by rotation of the fan 103 to converge
efficiently in the first and second air discharge ports 106 (through these flow paths)
and 107, thereby causing air containing the insect pest control component to be
forcibly discharged therethrough.
[0245] To wit, although it is desirable on the one hand that distance A approach A =
0 infinitely, on the other hand if A < 0.1 mm it then becomes difficult to control
accuracy of the members of which the apparatus is made. Then, an inaccuracy will
produce an interference between the fan 103 and the upstream side inlet hole edge,
which can be avoided only at a significant additional cost then required to achieve
due precision.
[0246] Conversely, if A> 5 mm, the wind by the fan 103 will then tend to be led
less into the first and second air discharge ports 106 and 107 and rather pass round
the regions of distance A and circulate almost within the fan accommodating
chamber 122. Then, the wind will be lost of its force there with a consequent loss of

diffusion efficiency.
[0247] Also, if r < 1.05 x R, then the width of the first and second air discharge ports
106 and 107 will become so small that the wind by the fan 103 while passing
through them suffers a pressure loss.
[0248] Conversely, if r > 2.5 x R, then the width of the first and second air discharge
ports 106 and 107 will become so large in that the wind by the fan 103 spreads out
suddenly there, losing its pressure again with a consequent loss of diffusion
efficiency.
[0249] Here, the term "width of the first and second air discharge ports 106 and 107"
is used to mean the radial distance between the inner inlet 110 and the outer outlet
111.
[0250] While the first and second air discharge ports 106 and 107 are typically
constructed as mentioned above to have an identical air resistance to discharge an
identical air flow therethrough so that an identical amount of the insect pest control
component may be emitted towards both the user's head and foot regions, it may be
desirable depending on a place of use to emit more of it towards one of these regions
than towards the other.
[0251] Then, the air resistance of a selected one of the first and second air discharge
ports 106 and 107 can be made smaller than that of the other to cause air entraining
more in amount of the insect pest control component to be emitted through the
selected air discharge port into the outside air. Alternatively, a third air discharge
port may additionally be formed in the base member 120 through which to cause air
containing the insect pest control component to be emitted towards upwards or
downwards.
[0252] For example, in a modification here as shown in Fig. 12 a first, a second and
a third air discharge port 106, 107 and 108 may be formed as angularly spaced apart
by an angle of 120 deg. in a vertical plane such that air is emitted through the first,
second and third air discharge ports 106, 107 and 108 upwards, downwards and
obliquely upwards as indicated by the arrows a, b and c, respectively.
[0253] This modification therefore permits the insect pest component to be emitted
more upwards.

[0254] Should the apparatus be designed to cause the insect pest control component
to be emitted more downwards, the third exhaust port 108 can be so arranged and
configured as to discharge air obliquely downwards. For example, the apparatus can
take a position vertically opposite to that shown in Fig. 12.
[0255] While only the first and second air discharge ports 106 and 107 or the first,
second and third air discharge ports 106, 107 and 108 are shown above to be
provided, the apparatus especially when designed for use as worn on the waist may
be formed with a subsidiary air discharge port or ports to direct air laterally thereof
where the insect pest control component may become deficient so that air is emitted
in all directions with upwards and downwards inclusive.
[0256] For example, subsidiary air discharge ports 109 facing laterally right and left
sides may be formed in a second modification here as shown in Fig. 13.
[0257] Such a subsidiary air discharge port 109 is substantially identical in shape to
but larger in air resistance than the first and second air discharge ports 106 and 107
mentioned above. For example, it is less open in the direction of rotation of the fan
and less in the amount of air discharged and less energetic than the first and second
air discharge ports 106 and 107.
[0258] Thus, the sizes in the rotation of the fan between the upstream side inlet hole
edge 110a and the downstream side inlet hole edge 110b and between the upstream
side outlet hole edge Ilia and the downstream side outlet hole edge 11 lb in the
subsidiary air discharge port 109 are smaller in than those in the first ands second air
discharge ports 106 band 107.
[0259] Since this allows air containing the insect pest control component to be
discharged laterally towards the right and left sides as indicated by the arrows d and
e, the insect pest control component can be emitted laterally of the user's waist, as
well as towards the user's head and feet.
[0260] One or two such subsidiary air discharge ports 109 may be provided on only
one or both of the right and left hand sides of the user's waist.
[0261] In effect, there need be no limitation imposed on the number of subsidiary air
discharge ports as mentioned above.
[0262] The total number of air discharge ports is preferably at most six, including

two main air discharge ports in the up and down sides (first and air discharge ports
106 and 107) or three main air discharge ports in three sides (first, second and third
air discharge ports 106, 107 and 108) and one or more subsidiary air discharge ports
109. That will be sufficient to cover insect pest control effects in lateral directions
and more than that will merely weaken the power of air upwards and downwards.
[0263] To prevent entry of contaminants through the first, second and third air
discharge ports 106, 107, 108 and subsidiary air discharge ports 109, a plurality of
current plates may be provided for these air discharge ports, which are preferably
oriented horizontally parallel to wind flows and mutually spaced apart by a distance
of 1 to mm.
[0264] Each such current plate is preferably shaped rectangular, elliptical or in the
form of a water drop or any other that does not impede wind flows.
[0265] The chemical for use in the present invention may be a miticide, vermin or
pest repellent, insecticide, or vermin growth retardant or sucking inhibitor, and
should be volatile.
[0266] Such chemicals, if used to kill insects, may be a variety of volatile
insecticides so far known, of which pyrethroid, carbamate, organophosphorus
chemicals and so on can be listed, further of which pyrethroid chemicals can
preferably be used as generally high in safety.
[0267] Further, such specific chemicals as methofluthrin, transfluthrin, empenthrin,
terallethrin and profluthrin which are highly active and which in a small amount
exhibit efficaciousness can desirably be used as they can make the chemical carrier
thin and small.
[0268] The sheet-like carrier used as impregnated with a chemical in the present
invention is illustratively made of a porous paper, cloth, woven or nonwoven fabric
or net material. Taking its stability as it is placed into consideration, it is desirable
that the chemical impregnated body for use be firmly held by a receptacle and its lid
or coating a portion, e. g., an outer peripheral portion, of the sheet-like chemical
impregnated body with a resin or the like. The receptacle and lid may be composed
of a material such as polyethylene terephthalate, polypropylene, polyethylene,
polyacetal, nylon, acrylic, ABS, paper, AS or metal. Further, considering its

portability, it is desirable that the carrier be a thin sheet having a thickness of 2 to 5
mm and an area of 700 to 3,000 mm<2> .
[0269] Especially, nonwoven fabric is suitable, preferably a "metsuke" (mass per
unit area) of 10 g/m<2> and more preferably 20 to 50 g/m<2> . If it exceeds 100
g/m<2> , then the chemical impregnated body will become too large in air resistance
to pass the wind by the fan and to diffuse the chemical smoothly. Conversely, it is
smaller than 10 g/m<2> , the chemical in amount that can be retained in the
chemical carrier will be too little and soon become short of supply to justify its
manufacture.
[0270] The fan may be a centrifugal fan such as a sirocco fan, radial fan or turbo fan.
[0271] The fan should be rotated at a rate of rotation of preferably 500 to 4,000 rpm
and more preferably 700 to 3,000 rpm.
[0272] The centrifugal fan should have a diameter preferably of 20 to 100 mm and
preferably 30 to 60 mm. It should have a height preferably of 2 to 50 mm and more
preferably 5 to 20 mm.
[0273] The fan, especially sirocco fan or radial fan, should preferably have a number
of blades of 10 to 50.
[0274] The power supply for driving the fan can illustratively be one or more of dry
cells such as alkaline dry cells of size AAAA, AAA, AA, C and D, manganese dry
cells of size AAAA, AAA, AA, C and D, rectangular-shaped alkaline cell (9 volts),
lithium cells and lithium button cells which can be used single or in combination. A
plurality such dry cells can be used connected in series or parallel. A secondary
battery can also be used preferably equipped with an AC adapter for recharging by a
domestic power supply (at AC 100 volts).
[0275] The casing body 101 can be attached to the user not only by the hanger as
shown but also in any way such as by means of a clip or with which to hang the,
apparatus on or a hole formed through which a belt or strap can be passed to attach
the apparatus on a region of the user's feet, waist or the arms.
[0276] The casing body 101 can be equipped with a switch to turn on off energizing
the apparatus and also with an indicator of LED, neon lamp or liquid crystal type for
displaying the apparatus being energized. Further, the fan itself can be made visible

from the outside so that the state of the apparatus being energized can be seen from
the fan rotating.
[0277] It should also be advantageous to set both the battery and chemical
impregnated body in the chemical receptacle to end their supplies simultaneously.
Then, the battery and the chemical receptacle can be mounted in a cartridge so that
they can be replaced as a body, thereby improving the expediency of the apparatus
in maintenance.
[0278] Conversely, if the battery and the chemical impregnated body are not made
ending simultaneously, then it should be desirable to make the respective endpoints
of the battery and the chemical impregnated body in the chemical receptacle
indicated by being displayed individually.
[0279] While the casing body 101 (base member 120) is shown above as its
peripheral region forming the fan accommodating chamber 122 is larger in thickness
to form the air discharge ports, this is not a limitation.
[0280] For example, a region of the casing body 101 that is outer to the fan
accommodating chamber 122 is formed with a plurality of guide blades
circumferentially spaced apart such that interstices between these guide blades form
air discharge ports.
[0281] A substitute battery accommodating chamber or chambers may be provided
in a region or regions lateral of the casing body 101 and to the base member 120.
[0282] Although the foregoing description implies the user primarily as a human
being, the term is here applicable to a pet such as a dog or livestock such as a cow.
In this case, a front to back region of it from its head to tail or from its face to belly
and rear feet is an area of interest to which the insect pest control component is to be
directed.
[0283] An explanation is next given in respect of a third form of implementation of
the present invention.
[0284] As shown in Figs. 14, 15 and 16 a blower type chemical diffusing apparatus
according to this form of implementation of the invention includes a chemical
receptacle (chemical cartridge) 201 and an air blower 202. It further comprises a
main casing body 205 having an air intake port 203 through which air is drawn by

the air blower 202 and an air discharge port 204 through which air entraining therein
a the chemical volatilizing from the chemical receptacle 201 is emitted; a power
casing body 208 separated from the main casing body 205 and containing a power
source 207 for the air blower 202 in the main casing body 205; and an electrical cord
209 connecting between the main casing body 205 and the power casing body 208
for energizing the air blower 202 in the main casing body 205 from the power source
207 in the power casing body 208.
[0285] More specifically, the main casing body 205 is in the form generally of a
circular cylinder that is axially short. And, it forms the air inlet port that is largely
open upwards while forming the air discharge port 204 which is open in the form of
a plurality of slits in one of its side faces. It should be noted here that the number of
such air discharge ports and the size and shape of each of such air inlet and outlet
ports are not limited to those shown and described.
[0286] And, the main casing body 205 has in its inside and beneath it the air blower
202 positioned. The air blower 202 comprises a motor 211 and a sirocco fan 212 as a
sort of the centrifugal fan wherein the motor 211 having its output shaft connected to
the fan 212. The sirocco fan 212 has a number of slanting blades 213
circumferentially equidistantly spaced apart, which are rotated by the motor 211 to
draw air through the air inlet port 203 at the top of the sirocco fan 212 to cause air
drawn to flow centrifugally within the main casing body 205 and to emanate through
the air discharge port 204 from the side face of the main casing body 205. However,
the use here of the sirocco fan 212 being a sort of the centrifugal fan as the air
blower 202 is not a limitation but any other suitable fan such as, for example, a
propeller fan having an impeller in the form of a propeller about its axis may be
used. When such a propeller fan is used as the blower fan, the main casing body 205
may be formed at its bottom with an air passage hole serving as an air inlet port and
may use the abovementioned port 203 as an air discharge port. And, adjacent to the
latter there may, as mentioned below, be disposed the chemical receptacle 201
charged with a volatile chemical so that air drawn by the blower fan through the air
inlet port at the bottom passes through the chemical receptacle 201 at the air
discharge port across the blower fan and upon entraining therein the volatilizing

chemical to issue into the outside.

WE Claim:
1. A chemical cartridge used for a blower type chemical diffusing apparatus, characterized
in that it comprises a chemical impregnated body (620) in the form of a pleated flat sheet
material (621) having a large number of pleats impregnated with a chemical, the pleats
being formed by alternating mountain fold and valley fold of the sheet material (621) at
certain widths, the sheet material (621) itself being air permeable and liquid absorptive,
the pleated sheet material (621) having a peripheral area (622) jointed to prevent the pleats
from getting out of shape.
2. A chemical cartridge as claimed in claim 1 wherein it further comprises a fixture (630)
for holding a peripheral area (622) of the chemical impregnated body (620).
3. A chemical cartridge as claimed in claim 1 wherein it further comprises a receptacle
(640) containing the chemical impregnated body (620) and having an airflow section.
4. A chemical cartridge used for a blower type chemical diffusing apparatus, characterized
in that it comprises:
a chemical impregnated body (620) in the form of a pleated flat sheet material
(621) having a large number of pleats impregnated with a chemical, the pleats being
formed by alternating mountain fold and valley fold of the sheet material (621) at certain
widths, the sheet material (621) itself being air permeable and liquid absorptive; and
a fixture (630) for holding a peripheral area (622) of the pleated sheet material
(621) with that area squeezed to keep the pleats not getting out of shape.
5. A chemical cartridge used for a blower type chemical diffusing apparatus, characterized
in that it comprises:
a chemical impregnated body (620) in the form of a pleated flat sheet material
(621) having a large number of pleats impregnated with a chemical, the pleats being
formed by alternating mountain fold and valley fold of the sheet material (621) at certain
widths, the sheet material (621) itself being air permeable and liquid absorptive; and
a receptacle (640) containing the chemical impregnated body (620) and having an
airflow section.

6. A chemical cartridge used for a blower type chemical diffusing apparatus, characterized
in that it comprises:
a chemical impregnated body (620) in the form of a pleated flat sheet material
(621) having a large number of pleats impregnated with a chemical, the pleats being
formed by alternating mountain fold and valley fold of the sheet material (621) at certain
widths, the sheet material (621) itself being air permeable and liquid absorptive, the
pleated sheet material (621) being deformable into a hollow cylindrical shape; and
a receptacle (640) configured to include an annular hollow (646) and an axial
hollow (647), to allow air to flow through these hollows, and to accept the chemical
impregnated body (620) in the annular hollow (646).
7. A chemical cartridge used for a blower type chemical diffusing apparatus, characterized
in that it comprises:
a chemical impregnated body (704a) composed of, a honeycomb body (710)
having a large number of honeycomb cores open to a pair of opposed side faces thereof in
a direction of its thickness and providing airflow passages parallel to the thickness
direction, and a sheet body (720) disposed adjacent to one of said side faces over an entire
area thereof wherein said honeycomb and sheet bodies (710 and 720) are impregnated
with a chemical; and
a retainer receptacle (730) for retaining therein said honeycomb and sheet bodies
(710 and 720) and holding them in intimate contact with each other.
8. A chemical cartridge as claimed in claim 7 wherein said receptacle (730) comprises a
receptacle base member (740) having a support section (741,742) for supporting the sheet
body (720); and a hold member (750) for fitting engagement with the receptacle base
member (740) to hold the honeycomb and sheet bodies (710 and 720) in intimate contact
with each other.
9. A chemical cartridge as claimed in claim 8 wherein said support section (742, 742) is
formed with a liquid chemical pool section (746) and a chemical inlet port (747) for
supplying liquid chemical into the liquid chemical pool section (746).
10. A chemical cartridge used for a blower type chemical diffusing apparatus,
characterized in that it comprises:

a chemical impregnated body (320) in the form of an air permeable and liquid
absorptive sheet impregnated with a chemical;
a retainer receptacle (321) for retaining the chemical impregnated body, the
retainer receptacle (321) having a hold section (321a) for holding an upper and a lower
face of the chemical impregnated body (320) from above and below them and an air
passage section (321b) through which air flows; and
a space (321c) formed between said hold section (321a) and chemical impregnated
body (320) and opening to an outside through an airflow section (321d) formed in the hold
section (321a).
11 A chemical cartridge as claimed in claim 10 wherein the hold section (321a) has:
a recess (335, 336, 337) formed where the hold section (321a) is contacting a lower
face of the chemical impregnated body;
said space (321c) formed between the recess (335, 336, 337) and the lower face of
the chemical impregnated body (320); and
an airflow hole (345, 346, 347) formed, where the hold section (321a) is contacting
an upper face of the chemical impregnated body (320), so that it is opposed to said recess,
thereby providing an air flow section (321d).
12. A chemical cartridge used for a blower type chemical diffusing apparatus,
characterized in that it comprises:
a chemical impregnated body (320) in the form of an air permeable and liquid
absorptive sheet impregnated with a chemical; and
a retainer receptacle (321) having a receptacle base member (330) and a cover
member (340) for holding said chemical impregnated body (320) wherein:
said receptacle base member (330) comprises a central support section (331), a
peripheral support section (332) and a plurality of intermediate support sections (333)
connecting the central support section (331) to the peripheral support section (332) to form
an airflow passage section (334), said receptacle base member (330) being formed with a
recess (335, 336, 337) in at least one of upper faces of the central, peripheral and
intermediate support sections (331, 332, 333) and with a space (321c) between this recess
(335, 336, 337) and a lower face of the liquid impregnated body (320),
said cover member (340) comprises a central hold section (341), a peripheral hold
section (342) and a plurality of intermediate hold sections (343) connecting the central
hold (341) section and the peripheral hold section (342) to each other to form an airflow

passage section (344), said cover member (340) being formed with an airflow hole (345,
346, 347)in at least one of the central, peripheral and intermediate hold sections (341, 342
and 343) so that it is opposed to said recess (335, 336, 337),
whereby said receptacle base member (330) and cover member (340) can
detachably be fitted with and coupled to each other to allow air to flow through the airflow
passage section (334) in the receptacle base member (330) and the airflow passage section
(344) in the cover member (340).
13. A chemical cartridge as claimed in claim 12 wherein the receptacle base member is
formed with a recess in the central support section and annular recess in the peripheral
support section.
14. A chemical cartridge as claimed in claim 12 or claim 13 wherein the central, peripheral
and intermediate support sections (331, 332 and 333) are identical in shape and size to the
central, peripheral and intermediate hold sections (341, 342 and 343), respectively, so that
the airflow passage sections (334, 344) are identical in shape and size to each other.
15. A chemical cartridge used for a blower type chemical diffusing apparatus,
characterized in that it comprises a chemical impregnated body (420) in the form of an air
permeable and liquid absorptive sheet impregnated with a chemical and a retainer
receptacle (421) for containing the chemical impregnated body (420) wherein the retainer
receptacle (421) is formed in a central area thereof with a liquid pool recess (421c) such
that liquid chemical stored in the liquid pool recess (421c) is allowed to permeate towards
a peripheral area of the sheet.
16. A chemical cartridge as claimed in claim 15 wherein:
the retainer receptacle (421) for containing the chemical impregnated body (420)
comprises a receptacle base member (430) and a cover member (440);
said receptacle base member (430) comprises a central support section (431), a
peripheral support section (432) and a plurality of connecting sections (433) connecting
the central and peripheral support sections (431 and 432) to each other to form an airflow
passage section (434);
said cover member (440) comprises a central hold section (441), a peripheral hold
section (442) and a plurality of connecting sections (443) connecting the central and

peripheral hold sections (441 and 442) to each other to form an airflow passage section
(444); and
a central liquid pool recess (421c) formed of a recess (445) formed in said central
support section (431) and a supply port (445) formed in said central hold section (441).
17. A chemical cartridge used for a blower type chemical diffusing apparatus,
characterized in that it comprises a chemical impregnated body (420) in the form of an air
permeable and liquid absorptive sheet impregnated with a chemical and a retainer
receptacle (421) for containing the chemical impregnated body (420) wherein the retainer
receptacle (421) is formed in a peripheral area with a liquid pool recess (421c) such that
liquid chemical stored in the liquid pool recess (421c) is allowed to permeate towards a
central area of the sheet.
18. A chemical cartridge as claimed in claim 17 wherein:
the retainer receptacle (421) for containing the chemical impregnated body (420)
comprises a receptacle base member (430) and a cover member (440);
said receptacle base member (430) comprises a central support section (431), a
peripheral support section (432) and a plurality of connecting sections (433) connecting
the central and peripheral support sections (431 and 432) to each other to form an airflow
passage section (434);
said cover member (440) comprises a central hold section (441), a peripheral
hold section (442) and a plurality of connecting sections (443) connecting the central and
peripheral hold sections (441 and 442) to each other to form an airflow passage section
(444); and
a peripheral liquid pool recess formed of a peripheral recess (436) formed in said
peripheral support section (432) and a peripheral supply section (446) formed in said
peripheral hold section (442).
19. A chemical cartridge used for a blower type chemical diffusing apparatus
characterized in that it comprises:
a chemical impregnated body (520) in the form of a sheet and a retainer receptacle
(530) containing the chemical impregnated body (520) wherein:
said chemical impregnated body (520) comprises a carrier (521) in the form of an
air permeable and liquid absorptive sheet having a localized high liquid retention region
(522) and impregnated with a chemical.

20. A chemical cartridge as claimed in claim 19 wherein a portion of the carrier (521) is
made larger in thickness than its remaining portions to constitute the high liquid retention
region (522).

A chemical cartridge is provided that makes its chemical impregnated body can
retain an increased amount of chemical per unit volume and the cartridge itself can thus be
made smaller in size. In particular, a chemical cartridge that retains a large amount of
chemical but is thin can thus be provided. The chemical cartridge used for a blower type
chemical diffusing apparatus comprises a chemical impregnated body (620) in the form of
a pleated flat sheet material (621) having a large number of pleats impregnated with a
chemical, the pleats being formed by alternating mountain fold and valley fold of the sheet
material (621) at certain widths, the sheet material (621) itself being air permeable and
liquid absorptive, the pleated sheet material (621) having a peripheral area (622) jointed to
prevent the pleats from getting out of shape.