DESCRIPTION
HEADPHONE TYPE ACOUSTIC APPARATUS
Technical Field
5 [0001] The present technology relates to a headphone
type acoustic apparatus integrally including headphones
and speaker used for listening to music.
Background Art
[0002] Most headphones are of so-called closed type.
10 The headphones of this type is an acoustic apparatus
configured to produce optimal sound in closed spaces
between headphone units and ears. In contrast, a
speaker is designed to be used for listening to sound
at some distance. The headphones and the speaker are
15 structurally similar. It can be said that the most
important difference therebetween is power (sound
pressure) for vibrating air. The headphones only need
to have power for vibrating air in the closed spaces.
On the other hand, the speaker needs high power for
20 vibrating air in a space between the speaker and the
user.
[0003] Patent Document 1 has disclosed headphones in
which the output power of a headphone/speaker is
switched between a low level for the headphone and a
25 high level for the speaker by a changeover switch
operation. Thus, the headphones have both of headphone
3
and speaker functions.
[0004] However, the headphones of Patent Document 1
merely switch the output power of the speaker unit
placed in a housing between the low level for the
5 headphone and the high level for the speaker.
Therefore, for using the speaker unit as the speaker,
it has to be used as a stationary speaker. At this
time, a distance between speaker units respectively
placed in left and right housings is not sufficient for
10 providing a sufficient stereophonic effect in
stereophonic reproduction.
[0005] Patent Document 1: Japanese Patent
Application Laid-open No. 2010-74831 (paragraph [0019],
etc.)
15 Summary of Invention
Problem to be solved by the Invention
[0006] Regarding a headphone type acoustic apparatus
integrally including headphones and a speaker, it has
been desirable to improve the performance, for example,
20 the usability and the sound quality of the speaker.
[0007] In view of the above-mentioned circumstances,
it is an object of the present technology to improve
the performance of a headphone type acoustic apparatus
integrally including headphones and a speaker.
25 Means for solving the Problem
[0008] In order to solve the above-mentioned problem,
4
a headphone type acoustic apparatus according to the
present technology includes a headband, a pair of
slider blocks including one end portions that are
slidably attached to both end portions of the headband,
5 a pair of housing blocks that are coupled to other end
portions of the pair of slider blocks via coupling
portions and each include a headphone unit, and a
speaker unit that is disposed in each of the pair of
slider blocks.
10 [0009] In the headphone type acoustic apparatus
according to the present technology, in addition to the
headphone units provided in the pair of housing blocks,
the speaker units are provided in the pair of slider
blocks. For enjoying music through the speaker units, a
15 portion including the headband and the left and right
slider blocks only needs to be mounted on the neck of a
user. In this mounted state, the pair of speaker units
are located under the left and right ears of the user,
and hence sound from the speaker units favorably
20 reaches the ears of the user through a space.
Furthermore, the slider blocks include the speaker
units, and hence the position relationship between the
speaker units and the ears of the user can be adjusted
by sliding the slider blocks.
25 [0010] The headphone type acoustic apparatus may
further include a first amplifier that is capable of
amplifying an audio signal to be supplied to the
headphone unit, a second amplifier that is capable of
amplifying an audio signal to be supplied to the
30 speaker unit, an operation section that receives a
5
switching instruction from a user, and a control unit
that switches between the first amplifier and the
second amplifier according to the instruction received
by the operation section.
5 [0011] With this, the user can freely switch between
the headphone unit and the speaker unit as a unit from
which the user wishes to output sound.
[0012] The speaker unit may include a speaker driver
unit including a diaphragm that is capable of vibrating
10 in a thickness direction of the slider block, a
magnetic circuit that drives the diaphragm, and a case
that retains and houses the diaphragm and the magnetic
circuit with the diaphragm being exposed therefrom, and
a lid that forms a space between the lid and a surface
15 of the case, from which the diaphragm is exposed, and
includes an opening for spilling sound from one end of
the space in a direction orthogonal to a slide
direction of the slider block.
[0013] The opening is provided for spilling sound
20 from the one end of the space in the direction
orthogonal to the slide direction of the slider block,
and hence sound from the speaker units in the case
where the headphone type acoustic apparatus is used by
being hung on the neck of the user can be emitted to
25 the ears of the user. With this, without greatly
increasing the sound volume of the speaker units, the
user can hear sound with sufficient volume.
[0014] The one end of the space in the direction
orthogonal to the slide direction of the slider block
30 is on a front side in a state in which the headphone
6
type acoustic apparatus is worn by the user.
Effects of the Invention
[0015] As described above, according to the present
technology, it is possible to improve the performance
5 of a headphone type acoustic apparatus integrally
including headphones and a speaker.
Brief Description of Drawings
[0016] [Fig. 1] A diagram showing the outer
appearance of a headphone type acoustic apparatus of a
10 first embodiment according to the present technology.
[Fig. 2] A sectional view showing a configuration
of the headphone type acoustic apparatus of Fig. 1.
[Fig. 3] A longitudinal sectional view of a
speaker unit.
15 [Fig. 4] A transverse sectional view of the
speaker unit.
[Fig. 5] An outer appearance view showing a
configuration of a speaker unit 24 from which a cover
and the like are removed.
20 [Fig. 6] A diagram showing a head-mounted state
of the headphone type acoustic apparatus of this
embodiment.
[Fig. 7] A diagram showing a neck-mounted state
of the headphone type acoustic apparatus of this
25 embodiment.
[Fig. 8] A diagram showing an electrical
configuration of the headphone type acoustic apparatus
of this embodiment.
[Fig. 9] A diagram showing a method of adjusting
7
speaker positions.
Mode(s) for Carrying Out the Invention
[0017] Hereinafter, an embodiment to which the
present technology is applied will be described with
5 reference to the drawings.

[Configuration of Headphone Type Acoustic
Apparatus]
Fig. 1 is a diagram showing the outer appearance
10 of a headphone type acoustic apparatus of a first
embodiment according to the present technology.
As shown in the figure, a headphone type acoustic
apparatus 100 includes a headband 10, left and right
slider blocks 20R, 20L, left and right hangers 30R, 30L
15 (coupling portions), and left and right housing blocks
40R, 40L.
Note that the symbol “R” indicates the right, the
symbol “L” indicates the left, and the left and right
are directions as viewed from a user wearing the
20 headphone type acoustic apparatus 100.
[0018] For hanging the headband 10 on the head or
neck of a human body, the headband 10 is, for example,
formed of a flexible thin plate of synthetic resin that
is generally curved at an approximately predetermined
25 curvature. The housing blocks 40R, 40L are attached to
both ends of the headband 10 via the slider blocks 20R,
20L and the hangers 30R, 30L, respectively.
[0019] Fig. 2 is a sectional view showing a
configuration of the headphone type acoustic apparatus
30 100 of Fig. 1.
8
Each of the slider blocks 20R, 20L includes a
slider base 21, a slider cover 22, a hanger coupling
portion 23, and a speaker unit 24.
[0020] For slidably retaining an end portion 11 of
5 the headband 10, the slider base 21 includes an
insertion portion 25, a hooking structure (not shown),
and the like. The end portion 11 of the headband 10 is
inserted into the insertion portion 25. The hooking
structure is provided in the insertion portion 25 and
10 locks an insertion position of the headband 10 by
hooking a hooking portion (not shown) such as a
protrusion formed on a surface of the end portion 11 of
the headband 10. By manually adjusting the amount of
insertion of the end portion 11 of the headband 10
15 depending on needs, the user can fit the housing blocks
40R, 40L onto the left and right ears of the user.
[0021] The slider cover 22 is an outer packaging
cover for the slider base 21.
The hanger coupling portion 23 is a portion
20 coupled to the hangers 30R, 30L to be described later.
To each of the slider blocks 20R, 20L, fixed is
the speaker unit 24 including a group of parts
necessary for the headphone type acoustic apparatus 100
of this embodiment to function as a speaker. The term
25 “speaker” as used herein means an acoustic apparatus
that transmits sound to the user by vibrating air in a
surrounding open space. It is used herein as a term
having different meaning from the “headphones” that
transmit sound to the user by vibrating air in a space
30 closed by the housing blocks.
9
[0022] The hanger 30R, 30L includes a first coupling
portion 31 for coupling to the hanger coupling portion
23 of the slider block 20R, 20L and a second coupling
portion 32 (see Fig. 1) for coupling to the housing
5 block 40R, 40L. The first coupling portion 31 includes
a shaft portion 33. This shaft portion 33 is coupled to
a bearing portion 27 provided in the hanger coupling
portion 23 of the slider block 20R, 20L. The bearing
portion 27 is a part for rotatably retaining the shaft
10 portion 33 of the first coupling portion 31 of the
hanger 30R, 30L. By the shaft portion 33 of the first
coupling portion 31 of the hanger 30R, 30L being
coupled to the bearing portion 27 of the hanger
coupling portion 23 of the slider block 20R, 20L in
15 this manner, the hanger 30R, 30L is coupled to the
slider block 20R, 20L to be rotatable around the shaft.
[0023] Note that the first coupling portion 31
including the shaft portion 33 is provided integrally
with the hanger 30R, 30L, and hence sufficient
20 durability is provided.
[0024] On the other hand, the second coupling
portions 32 (see Fig. 1) of the hangers 30R, 30L
rotatably support the housing blocks 40R, 40L,
respectively. This second coupling portion 32 is
25 configured to enable the housing block 40R, 40L to
rotate in an axis direction orthogonal to the axis
direction of the shaft portion 33 in the abovementioned
first coupling portion 31. The second
coupling portion 32 includes a forked portion 34
30 provided extending from the vicinity of the first
10
coupling portion 31 in a forked state and shaft
portions 35 provided in distal ends of the forked
portion 34.
[0025] The shaft portions 35 are provided protruding
5 from surfaces of the forked portion 34 which are
opposed to a housing 42 of the housing block 40R, 40L.
The shaft portions 35 of each of the left and right
hangers 30R, 30L are arranged to be aligned in a single
straight line passing through the center of the housing
10 42 and substantially function as an integral shaft. The
shaft portions 35 of each of the left and right hangers
30R, 30L are inserted into bearing holes (not shown)
formed in the housing 42 and retained.
[0026] [Configurations of Housing Blocks 40R, 40L]
15 Next, configurations of the housing blocks 40R,
40L will be described.
Each of the housing blocks 40R, 40L includes a
baffle 41, the housing 42, an ear pad 43, a headphone
unit 44, a wiring board 45, and the like.
20 [0027] The baffle 41 includes a base material having
an approximately disk shape that fixes the housing 42,
the ear pad 43, and the headphone unit 44.
The housing 42 is a box having an approximately
cylindrical shape for covering the headphone unit 44.
25 The ear pad 43 is a part having an approximately
doughnut shape having cushion properties for covering
the ear of the user.
Note that the shapes of the baffle 41, the housing
42, and the ear pad 43 are not limited to the above.
30 [0028] The headphone unit 44 is constituted of a
11
diaphragm for converting electrical signals into
vibration of air (sound), a magnetic circuit (e.g.,
magnet and voice coil), and the like.
[0029] The wiring board 45 is a board on which an
5 integrated circuit necessary for realizing the
functions of a processor 110, a memory, and otherwise
an audio reproduction apparatus and other electronic
components are mounted.
[0030] Note that, for example, in the housing 42,
10 provided are a slide switch 46 that is a part of a user
operation section 114 (see Fig. 8) and otherwise
switches such as a push switch and a jog dial.
[0031] [Configuration of Speaker Unit]
Next, a configuration of the speaker unit 24 will
15 be described.
In the headphone type acoustic apparatus 100 of
this embodiment, the speaker units 24 are provided as
devices that output sound in addition to the headphone
units 44 in the housing blocks 40R, 40L.
20 [0032] The speaker units 24 are disposed in the left
and right slider blocks 20R, 20L, respectively. The
speaker unit 24 is provided in a predetermined surface
of the slider block 20R, 20L, that is, a surface
oriented outward when the headphone type acoustic
25 apparatus 100 is worn by being hung on the head or neck
of the user.
[0033] Fig. 3 is a longitudinal sectional view
showing the configuration of the speaker unit 24. Fig.
4 is a transverse sectional view of the speaker unit 24.
30 Fig. 5 is an exploded perspective view showing a part
12
of a configuration of the slider block 20R, 20L
including the speaker unit 24.
[0034] The speaker unit 24 includes a diaphragm for
converting electrical signals into vibration of air
5 (sound), a magnetic circuit (e.g., magnet and voice
coil) that drives the diaphragm, a speaker driver unit
241 that is constituted of cases 242, 243 and the like
that house them, and a speaker cover 244 and a speaker
grille 245 that constitute a lid of the speaker driver
10 unit 241.
[0035] The cases 242, 243 are constituted of an
upper case 242 and a lower case 243. In the upper case
242, a diaphragm retaining aperture 246 for retaining
the periphery of the diaphragm in a state in which the
15 diaphragm (249 in Fig. 5) is exposed is provided. The
cases 242, 243 are fixed to a cushion member 28 fixed
to the slider base 21 of the slider block 20R, 20L, via
coupling parts such as a screw.
[0036] The speaker cover 244 is attached above the
20 speaker driver unit 241 so as to form a space between
the diaphragm of the speaker driver unit 241 and the
surface of the upper case 242.
[0037] The speaker grille 245 is a cover part for
decoration that further covers the outside of the
25 speaker cover 244.
[0038] As shown in Figs. 3 and 4, a space S is
formed between the diaphragm of the speaker driver unit
241 and the surface of the upper case 242 and the
speaker cover 244. In order to emit a sound pressure
30 with a predetermined directivity from the inside to the
13
outside of the space S, a sound spill port 247 for
spilling sound from the space to the outside is
provided in a side surface of the speaker cover 244. In
addition, in the speaker grille 245 that covers the
5 outside of the speaker cover 244, formed is a slit
opening 248 correspondingly to the sound spill port 247
of the speaker cover 244. Thus, the sound pressure
output from the speaker driver unit 241 is emitted from
the inside to the outside of the space S through the
10 sound spill port 247 provided in the side surface of
the speaker cover 244 and the slit opening 248 of the
speaker grille 245. In other words, in the lid that
collectively refers to the speaker cover 244 and the
speaker grille 245, a region in which openings of the
15 sound spill port 247 and the slit opening 248 overlap
each other is provided as substantially an opening for
spilling sound from the inside to the outside.
[0039] Furthermore, such that sound emitted from the
diaphragm of the speaker driver unit 241 is smoothly
20 guided to the sound spill port 247 provided in the side
surface of the speaker cover 244 and emitted to the
outside through them, the speaker cover 244 and the
upper case 242 are configured as follows.
[0040] 1. A most part of a rear surface of the
25 speaker cover 244 (surface opposed to diaphragm and
surface of upper case 242) is occupied by a flat
surface.
2. The height position of the space S and the
height position of the sound spill port 247 were set to
30 be approximately the same.
14
3. The space S was stopped at a position along a
semi-circumference on an opposite side of the sound
spill port 247 of the speaker driver unit 241. That is,
as viewed from a vibration direction of the diaphragm,
5 the space S is constituted of a space portion S1
corresponding to an outer shape of the diaphragm and a
space portion S2 that communicates from the space
portion S1 to the sound spill port 247 of the speaker
cover 244.
10 [0041] In order to configure the space S to have a
close structure except for the sound spill port 247,
portions in which the surface of the upper case 242 and
the rear surface of the speaker cover 244 abut against
each other are pressure-welded to each other while
15 sandwiching a cushion sheet 250 therebetween. Note that
the cushion sheet 250 serves to prevent vibration of
the upper case 242 due to vibration of the diaphragm
from being transmitted to the speaker cover 244.
[0042] By the way, the side surface in which the
20 sound spill port 247 of the speaker cover 244 is
provided means a surface oriented forward in a state in
which the headphone type acoustic apparatus 100 is worn
by the user. In other words, the sound spill port 247
is provided in an end of the space S, which is in a
25 direction orthogonal to a slide direction of the slider
block 20R, 20L. The reason is as follows.
[0043] Mainly two kinds of mounted state of the
headphone type acoustic apparatus 100 of this
embodiment are assumed. One of them is, as shown in Fig.
30 6, a mounted state during general use of the headphones.
15
Specifically, it is a state in which the left and right
housing blocks 40R, 40L are put on the left and right
ears of the user. It will be referred to as a “headmounted
state.”
5 [0044] The other is, for example, as shown in Fig. 7,
a state in which the portion of the headband 10 and the
left and right slider blocks 20R, 20L is mounted by
being hung on the neck of the user. It will be referred
to as a “neck-mounted state.” In this neck-mounted
10 state, the sound spill ports 247 of the left and right
speaker units 24, 24 are located approximately directly
under the left and right ears of the user. At this time,
the sound spill ports 247 are oriented upward and
forward. With this, sound from the left and right
15 speaker units 24, 24 efficiently reaches the left and
right ears of the user.
[0045] Furthermore, as shown in Fig. 3, the lower
case 243 of the speaker unit 24 is fixed and supported
to the slider base 21 via the cushion member 28 with
20 the screw or the like. With this, vibration of the
speaker unit 24 is prevented from being transmitted to
the slider base 21 of the slider block 20R, 20L.
[0046] [Electrical Configuration of Headphone Type
Acoustic Apparatus 100]
25 Fig. 8 is a diagram showing an electrical
configuration of the headphone type acoustic apparatus
100 of this embodiment.
As shown in the figure, the headphone type
acoustic apparatus 100 includes the processor 110, a
30 memory 112, the user operation section 114, a flash
16
memory 116, a headphone amplifier 118, a speaker
amplifier 119, the headphone units 44, 44, the speaker
units 24, 24, an external input terminal 120, a
switching circuit 122, a battery 124, and the like.
5 [0047] The processor 110 (processor) is a control
circuit that performs entire control and necessary
arithmetic processing and signal processing of the
headphone type acoustic apparatus 100 of this
embodiment and is constituted of a BGA (Ball Grid
10 Array) and the like.
[0048] The memory 112 stores a program and the like
to be executed by the processor 110 and is used as a
working area of the processor 110 or the like. The
memory 112 is constituted of an SDRAM (Synchronous
15 Dynamic Random Access Memory) and the like.
[0049] The user operation section 114 is a device
that receives an input of an operation from the user,
for example, a jog dial, a slide switch, or a push
button.
20 As switches of the user operation section 114,
there are on/off switch of a main power source, a sound
volume switch, an output changeover switch, and the
like. The output changeover switch is a switch for
alternatively switching between a headphone output and
25 a speaker output.
[0050] The processor 110 detects the state of the
output changeover switch and recognizes, based on the
result, which of the headphone output and the speaker
output has been selected by the user. If it is
30 recognized that the headphone output has been selected
17
by the user, the processor 110 drives the headphone
units 44, 44 by bringing the headphone amplifier 118
into an active state. Furthermore, if it is recognized
that the speaker output has been selected by the user,
5 the processor 110 drives the speaker units 24, 24 by
bringing the speaker amplifier 119 into an active state.
[0051] The flash memory 116 is a non-volatile
storage device capable of rewriting and deleting, in
which audio files and the like are stored as user data,
10 for example.
[0052] The headphone amplifier 118 (first amplifier)
amplifies an audio signal output from the processor 110
and supplies it to the headphone units 44, 44.
[0053] The speaker amplifier 119 (second amplifier)
15 amplifies an audio signal output from the processor 110
and supplies it to the speaker units 24, 24.
[0054] The external input terminal 120 is a
connection with an external device, for example, a
smart phone or a portable audio device.
20 [0055] The switching circuit 122 switches, based on
the connection state of the external device with the
external input terminal 120, input sources of the
headphone units 44, 44 between the headphone amplifier
118 and the external device. Specifically, if the
25 external device is not connected to the external input
terminal 120, the input sources of the headphone units
44, 44 are switched to the headphone amplifier 118. If
the external device is connected to the external input
terminal 120, the input sources of the headphone units
30 44, 44 are switched to the external device.
18
[0056] The battery 124 stores power for operating
the headphone type acoustic apparatus 100 and supplies
it. The battery 124 is rechargeable, for example, a
lithium battery.
5 [0057] Otherwise, the headphone type acoustic
apparatus 100 includes, although not shown in the
figure, a display device such as an LED (Light Emitting
Diode) for displaying various statuses, a generalpurpose
interface such as a USB (Universal Serial Bus),
10 and the like.
[0058] [Operation of Headphone Type Acoustic
Apparatus 100]
In the case where the headphone output is selected
according to an operation made by the user with respect
15 to the user operation section 114 (output changeover
switch), the processor 110 recognizes the selection
contents and brings the headphone amplifier 118 into an
active state.
[0059] When the user instructs to reproduce a music
20 track through the user operation section 114, the
processor 110 reads in an audio file of the music track
from the flash memory 116, for example. The processor
110 decodes and modulates it and converts it into an
analog signal. The processor 110 supplies the analog
25 audio signal to the headphone amplifier 118. The audio
signal amplified by the headphone amplifier 118 is
supplied to the headphone units 44, 44 and the
headphone units 44, 44 are driven. With this, the user
can enjoy music by the headphone output in the head30
mounted state.
19
[0060] Furthermore, in the case where the headphone
output is selected according to an operation made by
the user with respect to the user operation section 114
(output changeover switch), the processor 110
5 recognizes the selection contents and brings the
speaker amplifier 119 into an active state. The
processor 110 supplies the analog audio signal
generated from the audio file to the speaker amplifier
119. The audio signal amplified by the speaker
10 amplifier 119 is supplied to the speaker units 24, 24
and the speaker units 24, 24 are driven. With this, the
user can enjoy music by the speaker output in the neckmounted
state.
[0061] Furthermore, in the case where the user
15 operation section 114 is operated by the user to switch
to the speaker output while listening to music by the
headphone output, the processor 110 switches the
headphone amplifier 118 to an inactive state and
switches the speaker amplifier 119 to an active state.
20 In other words, in this headphone type acoustic
apparatus 100, an operation made by the user with
respect to the user operation section 114 can always
switch from listening to music by the headphone output
to listening to music by the speaker output. The same
25 applies to the case of switching from the speaker
output to the headphone output.
[0062] As described above, in the headphone type
acoustic apparatus 100 of this embodiment, in addition
to the headphone units 44, 44 provided in the left and
30 right housing blocks 40R, 40L, respectively, the
20
speaker units 24, 24 are provided in the left and right
slider blocks 20R, 20L. For enjoying music through the
speaker units 24, 24, as shown in Fig. 7, the user is
recommended to use it in the neck-mounted state through
5 a product manual or the like. In this neck-mounted
state, the sound spill ports 247 of the left and right
speaker units 24, 24 are located approximately under
the left and right ears of the user and oriented
approximately upward. That is, sound from the left and
10 right speaker units 24, 24 is emitted to the ears of
the user from below. Therefore, without greatly
increasing the sound volume of the speaker units 24, 24,
the user can hear sound with sufficient volume.
[0063] In addition, the entire size of the headband
15 10 and the slider blocks 20R, 20L can be manually
changed by the user depending on needs. Therefore, for
example, as shown in Fig. 9, the position relationship
between the left and right ears of the user and the
left and right speaker units 24, 24 can be freely
20 adjusted by changing the locking position to a position
at which the headband 10 is slightly pulled out of the
slider blocks 20R, 20L or changing the locking position
to a position at which the headband 10 is slightly
pushed into the slider blocks 20R, 20L conversely.
25 [0064] Furthermore, during use of the speaker, the
ears are not closed unlike use of the headphones, and
hence the user can hear surrounding sound as well as
music. Therefore, the safety of the moving user can be
enhanced.
30 [0065] [Effects in comparison with Patent Document
21
1]
1. The user can listen to sound from the left and
right speaker units 24, 24 by the left and right ears
with the headphone type acoustic apparatus 100 being
5 mounted on the neck during use of the speaker. Thus, a
favorable stereo effect can be provided in comparison
with a case of listening to sound from the left and
right housing blocks at a long distance like the one
described in Patent Document 1.
10 [0066] 2. In the headphone type acoustic apparatus
100 of this embodiment, sound is transmitted through a
space between the speaker unit 24 and the ear. Thus, it
is possible to enjoy natural speaker sound in
comparison with a method of switching the output power
15 of the speaker unit provided in the housing between the
low level for the headphones and the high level for the
speaker.
[0067] Note that the present technology may also
take the following configurations.
20 (1) A headphone type acoustic apparatus,
including:
a headband;
a pair of slider blocks including one end portions
that are slidably attached to both end portions of the
25 headband;
a pair of housing blocks that are coupled to other
end portions of the pair of slider blocks via coupling
portions and each include a headphone unit; and
a speaker unit that is disposed in each of the
30 pair of slider blocks.
22
[0068] (2) The headphone type acoustic apparatus
according to (1), further including:
a first amplifier that is capable of amplifying an
audio signal to be supplied to the headphone unit;
5 a second amplifier that is capable of amplifying
an audio signal to be supplied to the speaker unit;
an operation section that receives a switching
instruction from a user; and
a control unit that switches between the first
10 amplifier and the second amplifier according to the
instruction received by the operation section.
[0069] (3) The headphone type acoustic apparatus
according to (1) or (2), in which
the speaker unit includes
15 a speaker driver unit including
a diaphragm that is capable of vibrating
in a thickness direction of the slider block,
a magnetic circuit that drives the
diaphragm, and
20 a case that retains and houses the
diaphragm and the magnetic circuit with the diaphragm
being exposed therefrom, and
a lid that forms a space between the lid and
a surface of the case, from which the diaphragm is
25 exposed, and includes an opening for spilling sound
from one end of the space in a direction orthogonal to
a slide direction of the slider block.
Description of Symbols
[0070] 10 headband
30 20R. 20L slider block
23
21 slider base
22 slider cover
24 speaker unit
24, 24 speaker unit
5 30R. 30L hanger
31 first coupling portion
32 second coupling portion
33 shaft portion
34 forked portion
10 35 shaft portion
40R. 40L housing block
41 baffle
42 housing
43 ear pad
15 44, 44 headphone unit
100 headphone type acoustic apparatus
110 processor
112 memory
114 user operation section
20 116 flash memory
118 headphone amplifier
119 speaker amplifier
241 speaker driver unit
242 upper case
25 243 lower case
244 speaker cover
245 speaker grille
247 sound spill port
248 slit opening
30
24
Claims
[1] A headphone type acoustic apparatus, comprising:
a headband;
a pair of slider blocks including one end portions
5 that are slidably attached to both end portions of the
headband;
a pair of housing blocks that are coupled to other
end portions of the pair of slider blocks via coupling
portions and each include a headphone unit; and
10 a speaker unit that is disposed in each of the
pair of slider blocks.
[2] The headphone type acoustic apparatus according to
claim 1, further comprising:
a first amplifier that is capable of amplifying an
15 audio signal to be supplied to the headphone unit;
a second amplifier that is capable of amplifying
an audio signal to be supplied to the speaker unit;
an operation section that receives a switching
instruction from a user; and
20 a control unit that switches between the first
amplifier and the second amplifier according to the
instruction received by the operation section.
[3] The headphone type acoustic apparatus according to
claim 2, wherein
25 the speaker unit includes
a speaker driver unit including
a diaphragm that is capable of vibrating
in a thickness direction of the slider block,
a magnetic circuit that drives the
30 diaphragm, and
25
a case that retains and houses the
diaphragm and the magnetic circuit with the diaphragm
being exposed therefrom, and
a lid that forms a space between the lid and
5 a surface of the case, from which the diaphragm is
exposed, and includes an opening for spilling sound
from one end of the space in a direction orthogonal to
a slide direction of the slider block.
[4] The headphone type acoustic apparatus according to
10 claim 3, wherein
the one end of the space in the direction
orthogonal to the slide direction of the slider block
is on a front side in a state in which the headphone
type acoustic apparatus is worn by the user.