DESC:
FIELD OF INVENTION
The invention relates to the technical field of Ultra violet wall light. More particularly, the present invention disclose to a human coexisting ultraviolet irradiation system for disinfecting air on the upper layer of a space.

BACKGROUND ART
Ultraviolet rays are generally classified into 3 types by wavelength: the long-wave ultraviolet rays with the wavelength of 315nm to 380nm are abbreviated as UVA, the medium-wave ultraviolet rays with the wavelength of 280nm to 315nm are abbreviated as UVB, and the short-wave ultraviolet rays with the wavelength of 200nm to 280nm are abbreviated as UVC. Most of the currently available ultraviolet disinfection lamps utilize UVC ultraviolet rays to achieve disinfection. The ultraviolet ray can kill various microorganisms including bacteria propagules, spores, mycobacteria, viruses, fungi, rickettsia, mycoplasma and the like, and has broad spectrum. The disinfection mechanisms of ultraviolet light include the destruction of genetic material, affecting enzyme activity, and the destruction of proteins leading to the death of bacteria, viruses, and microorganisms.

Ultraviolet bacteria disinfection can be used in many scenes, and is generally classified into three main categories, namely air disinfection, water disinfection and surface disinfection. Pathogenic microorganisms that are primarily airborne, such as influenza virus (flu), rhinovirus (common cold), and the more dangerous pathogens (tuberculosis), are responsible for many diseases. Mold and spores are also lodged in heating, ventilation and air conditioning (HVAC) building structural systems, causing many diseases. Such as building related diseases (BRI). In order to reduce the occurrence of diseases, air disinfection systems may be installed inside air conditioners, air purifiers, and consumer devices. Deep ultraviolet lamps can be installed in filtration systems, humidifier water tanks, and small portable consumer devices in household HVAC ventilation ducts. Because the wavelength of the deep ultraviolet can penetrate through the air to kill bacteria carried in the air, the deep ultraviolet has extremely strong disinfection effect. Deep ultraviolet lamp not only can disinfect to air itself, can also help filter equipment to keep clean through preventing mycotic breeding and pollution.

Currently employed air disinfection devices include devices used in the absence of a human carrying a source of ultraviolet light. These devices need to be used without a person, cannot coexist, and are not practical especially in a full-size hospital or an isolated ward. And often the size is huge, and the transportation is inconvenient.

The air disinfection apparatus currently in use also includes suspended ceilings and floor mounted fixtures fitted with ultraviolet light sources, typically mercury lamps as shown in Fig 1. These fixtures prevent UV radiation from entering the human eye, by confining the UV radiation to an enclosed area or location not visible to the human eye, and by introducing air into the enclosed area inside the fixture for disinfection by air circulation. But this directly affects the disinfection efficiency of the device.

In order to achieve direct disinfection of the air in the enclosed space by ultraviolet light and avoid excessive ultraviolet radiation in the lower part of the room (i.e. the part of the room where a person is present), it is desirable to implement an ultraviolet device that can control the ultraviolet radiation height, range, and dose (the dose is the product of power per unit area of radiation and radiation time). Air in an area below the ceiling and above a certain height from the floor is disinfected by direct ultraviolet radiation. Proper airflow exchange will of course be beneficial to the disinfection effect of the device, but the range of direct irradiation is much greater than the range of air suction into the device for internal disinfection, and therefore the efficiency is greatly improved.

On the other hand, when severe infectious disease people and medical care personnel who enter a room need to be disinfected quickly and thoroughly in special cases, an ultraviolet device which can directly irradiate a designated place such as a doorway, a hospital bed, a patient, an operating table, medical equipment and the like must be used. The ultraviolet radiation intensity, angle and irradiation area of the device can be adjusted and controlled.

Considering current scenario, Keeping the home and working environment clean and hygiene is very important. Mainly from air boned viruses and germs.

Though UVC (Ultraviolet lights) rays can kill and disinfect the atmosphere, there is a negative side of the rays which is, The direct exposure to UVC rays will affect the humans.

So, we are in the verge of utilizing the UVC rays to solve the purpose and without compromising on safety. Since we plan to invent the UVC wall lamp, initially we tried with conventional approach in reflector and housing design for the wall lamp. Later our study and simulation results concluded controlling the UVC rays with in the minimum and maximum allowable limit is not possible in conventional Reflector design approach.

Also, we realize using lens or diffuser resist the required rays and give negative result

So, the challenge of how to handle the UVC rays effectively and safely made us design and invent the UVC wall lamp, specifically reflector design.

OBJECT OF INVENTION
The primary objective of the present invention is to develop the disinfection UVC Lamp for disinfecting the airborne virus under direct exposure in specific room during human coexisting / occupancy time.

The secondary objective of innovation is to use the UVC lamp under human occupancy situation (subject to specific mounting guidelines of lamp*).

Another objective of the present invention is to provide a sensor for real time detecting any obstruction in the path of the UV ray and also detect and reflection / refraction of UV rays if any outside the lighting assembly.

SUMMARY OF INVENTION

In order to solve the problems, the invention provides a human coexisting ultraviolet irradiation system for disinfecting air on the upper layer of a space, the disinfection equipment of the invention is easy to adjust the radiation angle so as to provide a radiation field suitable for various ceiling heights, and the wall light can be suitable for places with higher layer heights, such as fitness places, sport places, or indoor performances and the like. And can also be used in rooms with relatively low ceilings, such as elevators and public transport vehicles, rooms, office buildings, halls and the like.

In order to achieve the purpose, the invention adopts the following technical scheme: an ultraviolet irradiation system for human coexistence of air disinfection at the upper layer of a space comprises disinfection equipment arranged on a wall body of a closed or semi-closed space, wherein the disinfection equipment comprises an equipment shell, an ultraviolet light source component and an irradiation angle controller, and the ultraviolet light source component is arranged in the equipment shell; wherein the said ultraviolet wall lighting comprises ultraviolet Tube beads, housing and a circuit board, the ultraviolet tube beads and circuit board are packaged in the housing, and the electrical connections are outside the housing.

The combination of reflector and light-absorbing reflector is designed in such a way that, it will highly control the light as per the functional and safety guidelines.

As a further improvement of the invention, the ultraviolet tube bead is a collimation ultraviolet light source, the ultraviolet tube bead is arranged in the packaging substrate, the radiation channel in the packaging substrate is linear, and the opening end of the radiation channel is provided with a transparent material.

In an embodiment of the invention, the UVC tube also comprises a parabolic reflecting surface, and a single or a plurality of ultraviolet tube beads are arranged at the focal point of the parabolic reflecting surface and facing the back of an ‘U’ shaped UV absorbing collimator; the reflecting surface form an array of parallel collimated UV rays.

In another embodiment of the invention, the ultraviolet tube bead is a non-collimated ultraviolet light source, the ultraviolet tube bead is arranged in the packaging housing, the radiation channel in the packaging substrate is in a parabolic shape, the surface of the radiation channel is a reflecting surface, and a collimator is arranged on the opening end of the radiation channel for making the radiation parallel to the opening of the tube wall light assembly.
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BRIEF DESCRIPTION OF THE ACCOMPANYING DRAWINGS

FIG. 1 illustrates a UV Light fixture as per the prior art;
FIG. 2 illustrated the components and the parts of the ultra violet (UVC) wall light with reflector in accordance with the present invention;
FIG. 3 illustrates the assembled ultra violet (UVC) wall light with reflector in accordance with the present invention;
Fig 4 and 5 illustrates irradiation plot and ray movement of conventional parabolic or elliptical reflector as per the prior art;
Fig 6 and 7 illustrates irradiation plot and ray movement of UV light parabolic or elliptical reflector in accordance with the present invention;
Fig: 8, 9 and 10 illustrate the final product look like in accordance with the present invention.

DETAILED DESCRIPTION:
When we design the the UVC wall light with Conventinal Parabolic or Eliptical reflector we find the result at the middle of Room vertical plane as ber below fig:4. And the ray come out as per fig:5 This shows minium allowable irradiance fall across the room’s floor to Roof. So this is not safe.

With the combination of light absorbing Collimator and reflector we get a result as shown in below Fig: 6 and 7.

Below images of UVC wall light shows the light and reflector construction of already available solution. Also along with each product it is explained why it can’t provide safe light while the humans present inside the room.

The UV Wall Lamp which is shown in Fig 1 control the light Rays similar like the ray movement in Fig: 5. So, we can’t control the light with in a controlled height. We can only operate the light remotely and no person should be allowed while the light is on.

In the present invention and as illustrated in Fig 2, the Combination of Reflector and Light absorbing reflector is designed in such a way that, it will highly control the light as per the functional and safety guidelines.

Also, below Fig: 8 shows how the final product look like.

Also this collimator ,UVC light and reflector combination is not restrict to wall light. As long as Mounting height and safety parameters are similar, a person skilled in the art can use this assembly in different applications like Panel light, Linear etc as shown in below Fig:9 and Fig 10.

Following are the Product and material details.

Sl No Material Description Material Finish
1 Reflector Aluminium Anodized
2 UVC Lamp Glass Housing Transparent
3 Collimator CRCA Black Powder coated
4 Housing CRCA/Aluminium Powder coated.

as per the prior art;Fig 5 illustrates . And the ray come out as per This shows minium allowable irradiance fall across the room’s floor to Roof. So this is not safe.

With the combination of light absorbing Collimator and reflector we get a result as shown in below Fig: 6 and 7

The Combination of Reflector and Light absorbing reflector is designed in such a way that, it will highly control the light as per the functional and safety guidelines.

Also, below Fig: 8 shows how the final product look like.

Also This Collimator ,UVC light and Reflector combination is not restrict to wall light. As long as Mounting height and safety parameters are similar, we can use this assembly in different applications like Panel light, Linear etc as shown in below Fig: 9 and Fig 10.

EXAMPLE
In an illustrative example following constructional constraints / limitations of Ultra violet wall lamp as under :
The central axis of lamp tube, reflector and collimator is horizontal and parallel to each other.

The axis of lamp tube which is diameter 16 mm is placed at distance of 10 mm in front of reflector and the rectangular collimator is 12.5 mm in front of lamp tube. The rectangular collimator width is 29 mm. The reflector opening is 70 mm from axis of lamp tube and opening width is 55 mm. The collimator height extends beyond reflector opening by 7.5 mm. The device length is 500 mm whereas lamp tube is kept at 452 mm to prevent cross lateral stray beams. The lamp tube outer surface subscribe an angle of 31 degree with outer surface of Reflector

Sl No. TIME DISTANCE IRRADIATION VALUE
1 1 hrs 10 Feet 0.2 µW/Cm2
2 4 hrs
3 8 hrs
4 12 hrs

Although the foregoing description of the present invention has been shown and described with reference to particular embodiments and applications thereof, it has been presented for purposes of illustration by way of examples and description and is not intended to be exhaustive or to limit the invention to the particular embodiments and applications disclosed. All such changes, modifications, variations, and alterations should therefore be seen as being within the scope of the present invention as determined by the appended claims when interpreted in accordance with the breadth to which they are fairly, legally, and equitably entitled
,CLAIMS:
1. An ultra violet (UVC) tube wall light with reflector configured for continuous disinfecting air on the upper layer of a space during human coexistence comprising of :
at least one ultraviolet tube bead being a non-collimated ultraviolet light source;
a packaging housing for the said UV tube bead including a substrate including a radiation channel forming a parabolic shape; and
a UV light absorbing collimator is arranged on the opening end of the radiation channel for making the radiation parallel to the opening of the tube wall light assembly;
wherein the surface of the radiation channel is a reflecting surface.

2. The ultra violet (UVC) tube wall light with reflector as claimed in claim 1, wherein the said reflecting surface is intended to reflect the rays coming from the source to form a homogeneous beam having a given general direction of emission on an angular extent of approximately 1800.

3. The ultra violet (UVC) tube wall light with reflector as claimed in claim 1, wherein said ultraviolet Tube bead is a collimation ultraviolet light source, the ultraviolet tube bead is arranged in the packaging substrate, the radiation channel in the packaging substrate is linear, and the opening end of the radiation channel is provided with a transparent material.

4. The ultra violet (UVC) tube wall light with reflector as claimed in claim 1, wherein said ultraviolet tube bead is arranged at the focal point of the parabolic reflecting surface and facing the back of an U shaped said UV absorbing collimator; where the reflecting surface form an array of parallel collimated UV rays.

5. The ultra violet (UVC) tube wall light with reflector as claimed in claim 1, wherein said ultraviolet wall lighting comprises of a plurality of ultraviolet Tube beads, housing and a circuit board; wherein
said ultraviolet tube beads and circuit board are packaged in the housing, and the electrical connections are outside the housing.

6. The ultra violet (UVC) tube wall light with reflector as claimed in claim 1, wherein the central axis of lamp tube, reflector and collimator is horizontal.

7. The ultra violet (UVC) tube wall light with reflector as claimed in claim 1, wherein the said UVC irradiation > 0.2 µW/cm2 and should not fall below 7 feet and above 9.5 Feet height considering the wall lamp mounted at the height of 7 feet.

8. The ultra violet (UVC) tube wall light with reflector as claimed in claim 1, further comprising of sensor assembly configured for real time detecting any obstruction / deviation of the path of the UV ray and also detect any reflection / refraction of UV rays outside the lighting assembly.