CN217584176U - Lighting device - Google Patents

Abstract

The application provides a lighting device for solve lighting device can't compromise the problem of illumination and the purpose of disinfecting among the correlation technique. The lighting device includes: an ultraviolet light source, an illumination light source and a reflector; the reflector is provided with a reflecting cavity, and one side of the reflecting cavity is provided with a light outlet; at least one part of the ultraviolet light source and the illumination light source are arranged in the reflection cavity, and the inner wall of the reflection cavity can reflect at least one part of light rays emitted by the ultraviolet light source and the illumination light source out of the reflection cavity through the light outlet. The reflector has two purposes, not only can reflect the illumination light source to meet the illumination requirement, but also can reflect the ultraviolet light source to achieve the purpose of sterilization and disinfection on objects or in a certain space range, so that the illumination device can simultaneously achieve the purposes of illumination and sterilization and disinfection under the condition of only increasing the cost of the ultraviolet light source, the practicability of the illumination device is improved, and the illumination device is high in quality and low in price.

Description

Lighting device

Technical Field

The application relates to the technical field of lighting, in particular to a lighting device.

Background

With the increasing living standard of people, lighting devices (such as lamps) become essential electrical appliances in daily life of people, and can provide lighting for the environment. Due to differences of application environments and lighting effects, people have increasingly diversified demands on types of lamps. For example, spot lights are typical of modern genre lighting, creating an indoor lighting atmosphere. The spot light can directly irradiate on furniture or in a specific space range to be emphasized, can play a leading role in the whole illumination, and can also locally collect light and set off the atmosphere. Some ultraviolet disinfection lamps can sterilize and disinfect objects or space areas to ensure cleanness, sanitation and safety of the objects or the space areas.

The spot light in the related art is usually installed on a roof, a wall or a ground through a bracket, and includes a housing, and an illumination light source and a reflector arranged in the housing, where the reflector is used to reflect light emitted by the illumination light source out through a light outlet and irradiate the light to an object or a specific space range, so as to achieve an illumination effect within a certain range.

SUMMERY OF THE UTILITY MODEL

The inventors of the present application have realized that: the spot lamp in the related art can achieve the effect of illumination within a certain range, but cannot achieve the purposes of illumination, sterilization and disinfection.

An object of the embodiment of the application is to provide a lighting device, which is used for solving the problem that the lighting device in the related art cannot give consideration to the purposes of lighting, sterilization and disinfection.

The basic idea proposed by the inventor of the present application is: the spot lamp in the related art comprises an illuminating light source and a reflector, wherein an ultraviolet light source is added on the basis of the spot lamp structure, and the ultraviolet light source and the illuminating light source are both emitted by reflection of the reflector so as to take the effects of illumination and sterilization into consideration.

Based on the above basic concept, the present application provides a lighting device, including: an ultraviolet light source, an illumination light source and a reflector; the reflector is provided with a reflecting cavity, and one side of the reflecting cavity is provided with a light outlet; at least one part of the ultraviolet light source and the illumination light source are arranged in the reflection cavity, and the inner wall of the reflection cavity can reflect at least one part of light rays emitted by the ultraviolet light source and the illumination light source out of the reflection cavity through the light outlet.

By adopting the technical scheme, the reflector has two purposes, namely, the reflector can reflect the illumination light source to meet the illumination requirement and can reflect the ultraviolet light source to achieve the purpose of sterilization and disinfection on objects or in a certain space range.

In some embodiments, the inner wall comprises a plurality of sub-inner walls disposed around the ultraviolet light source; for each sub-inner wall, in a section perpendicular to the depth direction of the reflection cavity, the sub-inner wall is bent towards a direction away from the ultraviolet light source to enclose a first area.

In this way, the two light sources can be mixed well, and in addition, the coverage range of the light rays emitted by the ultraviolet light source and the illumination light source is further enlarged.

In some embodiments, the number of the illumination light sources is plural, a plurality of the illumination light sources are arranged around the ultraviolet light source, and at least a part of each of the illumination light sources is arranged in the first region surrounded by the corresponding sub inner wall.

Therefore, light rays in the coverage range of the light rays emitted by the ultraviolet light source and the illumination light source can be ensured to be uniform, and bright spots are avoided.

In some embodiments, each of the sub-inner walls is parabolic.

By adopting the technical scheme, the light rays emitted by the illumination light source and the ultraviolet light source are well collimated through the reflection of the paraboloids, so that the illumination and disinfection effects are improved.

In some embodiments, each of the illumination light sources is disposed at the focal point O of the corresponding sub-inner wall.

Thus, the plurality of illumination light sources uniformly illuminate an illumination plane, and the uniformity and the aesthetic property of illumination light of the illumination device are improved on the whole.

In some embodiments, the light-emitting side of the ultraviolet light source is provided with a filter through which deep ultraviolet light can pass.

The light-emitting side of the ultraviolet light source is provided with the optical filter, so that the optical filter can be provided with a filtering waveband according to actual needs to allow the deep ultraviolet light in the waveband to pass through.

The deep ultraviolet light is light having a wavelength of 200nm to 350 nm.

In some embodiments, the filter may pass deep ultraviolet light having a wavelength of 222nm or 207 nm.

Compared with other deep ultraviolet light with the wavelength, the light source is safer, and the safety of the lighting device is further improved.

In some embodiments, the ultraviolet light source comprises a carrier, and a plurality of excimer lamps disposed on the carrier; and/or, the optical filter is an optical filter.

The ultraviolet light source composed of a plurality of excimer lamps arranged on the bearing piece can improve the sterilization and disinfection effect, and the cost can be effectively controlled by adopting the optical filter under the condition of meeting the filtering requirement.

In some embodiments, the illumination light source is a COB light source, the COB light source including a substrate and an LED chip for emitting white light, the LED chip disposed on the substrate.

Because the COB light source is a high-power integrated surface light source, and is used as an illumination light source, on one hand, the illumination effect of the illumination device is good, and on the other hand, the installation and the maintenance are convenient, and the price is low.

In some embodiments, the reflector is an aluminum reflector.

The aluminum reflector is adopted, so that the processing is convenient, the reflecting effect is good when the aluminum reflector is used for ultraviolet irradiation, the service life is long, and the price is low.

Drawings

In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly introduced below, and it is obvious that the drawings in the following description are some embodiments of the present application, and for those skilled in the art, other drawings can be obtained according to these drawings without inventive exercise.

FIG. 1 is a cross-sectional view of a spotlight including a lighting device in some embodiments of the present application;

FIG. 2 is a partial block diagram of a lighting device at one viewing angle in some embodiments of the present application;

FIG. 3 is a partial block diagram of the lighting device shown in FIG. 2 from another viewing angle;

FIG. 4 is a partial block diagram of the lighting device shown in FIG. 2 from another viewing angle;

FIG. 5 is a cross-sectional view of the lighting device of FIG. 2;

FIG. 6 is a cross-sectional view of the ultraviolet light source of FIG. 2;

FIG. 7 is a cloud of illumination of light emitted by the illumination device of the example of the application;

FIG. 8 is a graph showing the distribution of the illuminance curve in the X direction in FIG. 7;

FIG. 9 is a graph showing the distribution of the illuminance curve in the Y direction in FIG. 7;

FIG. 10 is a cloud of irradiance of light emitted by the lighting device of the example of the application;

FIG. 11 is a graph of the distribution of the irradiance in the X direction in FIG. 10;

fig. 12 is a distribution diagram of the radiation illuminance curve in the Y direction in fig. 10.

Reference numerals:

an illumination device 100; a housing 101; a bracket 102; an ultraviolet light source 1; a carrier 11; an excimer lamp 12; an illumination light source 2; a substrate 21; an LED chip 22; a reflector 3; a reflective cavity 31; a light outlet 32; an inner wall 33; the sub inner wall 331; a first region 34; a filter 4.

Detailed Description

Reference will now be made in detail to embodiments of the present application, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are illustrative and are only for the purpose of explaining the present application and are not to be construed as limiting the present application.

In the description of the present application, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted" and "connected" are to be interpreted broadly, e.g., as being either fixedly connected, detachably connected, or integrally connected; may be mechanically connected, may be electrically connected or may be in communication with each other; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art as appropriate.

In the description of the present application, it is to be understood that the terms "upper", "lower", "side", "front", "rear", and the like indicate orientations or positional relationships based on installation, and are only for convenience in describing the present application and simplifying the description, but do not indicate or imply that the device or element referred to must have a particular orientation, be constructed in a particular orientation, and be operated, and thus should not be construed as limiting the present application.

In the description of the present application, it should be noted that the term "and/or" is only one kind of association relationship describing an associated object, and means that three relationships may exist, for example, a and/or B may mean: a exists alone, A and B exist simultaneously, and B exists alone.

It should be noted that the same reference numerals are used to denote the same components or parts in the embodiments of the present application, and for the same parts in the embodiments of the present application, only one of the parts or parts may be given the reference numeral, and it should be understood that the reference numerals are also applicable to the other same parts or parts.

People pay more and more attention to sanitation and safety, namely, disinfection is needed to be carried out on living or office environments for many times, the work is complicated, and the workload is large. The ultraviolet lamp has a limited irradiation range, and the spot lamp 100 has an ideal irradiation effect, so that the light emitted from the illumination light source 2 can be intensively irradiated on a certain object or a space region.

As shown in fig. 1, fig. 1 is a cross-sectional view of a spotlight including a lighting device 100 according to some embodiments of the present application. The spotlight comprises a housing 101 and a lighting device 100 arranged in the housing 101. The housing 101 mounts the spotlight 100 on a roof or a wall surface through the bracket 102, and the relative angle between the bracket 102 and the housing 101 is adjusted, so that the light emitted by the illumination light source 2 of the illumination device 100 is reflected by the light outlet and irradiates on an object or a specific space range, thereby achieving the illumination effect within a certain range.

The lighting device 100 may be applied to a downlight as well as a spot light, and is not particularly limited herein.

As shown in fig. 2 and 3, fig. 2 is a partial structural view of the illumination device 100 in some embodiments of the present application from one viewing angle, and fig. 3 is a partial structural view of the illumination device 100 shown in fig. 2 from another viewing angle. The lighting device 100 includes: ultraviolet light source 1, illumination light source 2 and reflector 3. The lighting device 100 can give consideration to both lighting and sterilization of the lighting device 100, complete lighting and sterilization in a residential or office environment, and ensure the sanitation safety in the residential or office environment.

The reflector 3 is provided with a reflecting cavity 31, and one side of the reflecting cavity 31 is provided with a light outlet; the ultraviolet light source 1 and the illumination light source 2 are disposed in the reflective cavity 31, and the inner wall 33 of the reflective cavity 31 can reflect at least a part of the light emitted by the ultraviolet light source 1 and the illumination light source 2 out of the reflective cavity 31 through the light outlet. Thus, the reflector 3 has two purposes, not only can reflect the illumination light source 2 to meet the illumination requirement, but also can reflect the ultraviolet light source 1 to achieve the purpose of sterilization and disinfection on objects or in a certain space range.

Specifically, the reflector 3 includes a reflecting shade having a reflecting cavity 31 formed by a reflecting surface, both ends of the reflecting shade are provided with openings along the depth direction of the cavity, the openings are respectively a narrow opening end and a wide opening end, the narrow opening end is used for installing and fixing the ultraviolet light source 1 and the illumination light source 2, the ultraviolet light source 1 and the illumination light source 2 are arranged in the reflecting cavity 31, and the wide opening end is a light outlet for reflecting the light emitted by the ultraviolet light source 1 and the illumination light source 2 out of the reflecting cavity 31 through the light outlet. With the arrangement, the ultraviolet rays and the light emitted by the illumination light source 2 can be emitted out of the reflection cavity 31 through the light outlet, and the object or the space can be illuminated, sterilized and disinfected simultaneously.

It should be noted that the ultraviolet light source 1 and the illumination light source 2 are disposed in the reflective cavity 31, and include that the ultraviolet light source and the illumination light source 2 are all disposed in the reflective cavity 31, and also include that the ultraviolet light source and the illumination light source 2 are all partially disposed in the reflective cavity 31, and one of the ultraviolet light source and the illumination light source 2 is all partially disposed in the reflective cavity 31, and is not limited herein.

The reflector 3 further includes a bottom plate, the bottom plate is located at the narrow-end, the bottom plate is provided with an installation opening for the illumination light source 2 and the ultraviolet light source 1, and the installation opening is disposed on the bottom plate, so as to provide a fixed position for the illumination light source 2, although the bottom plate may not be used, and the illumination light source 2 and the ultraviolet light source 1 are directly fixed at the installation opening at the narrow-end by other fixing devices, such as by gluing or other fixing devices, which are not specifically limited herein.

As shown in fig. 2, in some embodiments, the reflector 3 is an aluminum reflector. The aluminum reflector is formed by a polished reflecting surface made of aluminum, and forms a reflecting cavity 31. Because the aluminum reflector is convenient to process, has good reflection effect when being used for ultraviolet irradiation, is resistant to ultraviolet light source irradiation, has long service life and low price, the cost of the reflector 3 can be effectively reduced, the service life of the reflector 3 is prolonged, and the whole service life of the lighting device 100 is greatly prolonged.

Of course, the aluminum reflector may be formed by a plastic film-coated reflective surface or a plastic embossed reflective surface, in addition to the aluminum polished reflective surface, which is not limited herein.

As shown in fig. 2 and 3, in some embodiments, the inner wall 33 includes a plurality of sub-inner walls 331 disposed around the ultraviolet light source 1; for each sub inner wall 331, in a cross section perpendicular to the depth direction Z of the reflective cavity 31, the sub inner wall 331 is bent in a direction away from the ultraviolet light source 1 to enclose the first region 34.

Like this, on the one hand make the light that lighting source 2 sent pass through from first region 34, the dispersion is around ultraviolet light source 1, and the two kinds of light sources of being convenient for can mix well, and in addition, a plurality of first regions 34 have increased the area of the light-emitting window of narrow-mouth end, and then enlarge ultraviolet light source 1 and lighting source 2's the coverage of the light that sends.

As shown in fig. 4, fig. 4 is a partial structure view of the lighting device 100 shown in fig. 2 at another viewing angle. In some embodiments, the number of the illumination light sources 2 is 8, the first area 34 is 8, the 8 illumination light sources 2 are disposed around the ultraviolet light source 1, the sub inner walls 331 are 8, and each illumination light source 2 is disposed in the first area 34 surrounded by the corresponding sub inner wall 331.

Thus, the light emitted by the illumination light source 2 is in each first area 34, so that the light uniformity in the coverage range of the light emitted by the ultraviolet light source 1 and the illumination light source 2 can be ensured, and bright spots are avoided.

Of course, other number of illumination light sources 2 may be provided around the ultraviolet light source 1, and the number of the first regions 34 may be other than 8, and is not particularly limited herein.

As shown in fig. 2-4, in some embodiments, each of the sub-inner walls 331 is a paraboloid, each of the illumination light sources 2 is respectively disposed at the focal point O of the corresponding paraboloid, and 8 paraboloids constitute the inner wall 33 in the shape of a tulip petal. Because every illumination source 2 sets up respectively in the focus O department of the parabolic that corresponds, like this, the light that every illumination source 2 that is located in every first region 34 sent after parabolic reflection from the light-emitting outlet, evenly shine an illumination plane, 8 illumination sources 2 and then can evenly shine an illumination plane simultaneously, like this, the light that sends when illumination source 2 and ultraviolet source 1 can be perfectly collimated after the inner wall 33 reflection like tulip petal shape, evenly shine an illumination plane, the homogeneity of illumination and disinfection and isolation light has been improved like this, improve illumination and disinfection and isolation effect on the whole.

The focal point O is a focal point position of a parabola of the section of the paraboloid or a focal point position of a parabola of the section of the paraboloid, and is not particularly limited herein.

Usually, the light rays diverge, that is, two adjacent light rays are farther away from each other after propagation. Collimation is colloquially said to maintain parallelism between the rays.

The inner wall 33 may be formed by 8 paraboloids, or another number of paraboloids, and when the number of the sub-inner walls 331 is increased, the inner wall 33 is closer to the circular glass cup shape with the circular light outlet, or the inner wall 33 is formed by an integrally formed circular glass cup-shaped structure, of course, the sub-inner walls 331 may be formed by concave arc surfaces besides the paraboloids, and the plurality of concave arc surfaces form a conical inner cavity structure, which is not particularly limited.

As shown in fig. 5, fig. 5 is a cross-sectional view of the lighting device 100 in fig. 2. In some embodiments, the illumination light source 2 is a COB light source, which includes a substrate 21 and an LED chip 22 for emitting white light, and the LED chip 22 is disposed on the substrate 21.

Because the COB light source is a high power integrated area source, regard it as illumination light source 2, can make lighting device 100's illuminating effect good on the one hand, on the other hand, installation and easy maintenance, and low price.

Specifically, the lighting source 2 is a COB Light source, the COB is fully called Chip On Board Light, and is an abbreviation for Chip-On-Board packaging, the COB Light source is a high-power integrated surface Light source, a high-Light-efficiency integrated surface Light source technology that the LED Chip 22 is directly attached to a mirror metal substrate with high Light reflection rate is adopted, and the COB Light source has the characteristics of high color rendering, uniform Light emission, no Light spot, health and environmental protection, so that the lighting effect can be ensured, and the pollution to the environment can be reduced; in addition, the LED chip 22 is disposed on the substrate 21, which facilitates the fixing and electrical connection of the illumination light source 2, and facilitates the installation and maintenance.

One kind of COB light source is manufactured by COB technology, and the other kind is Flip Chip technology. And is not particularly limited herein.

Besides being a COB light source, the lighting source 2 can also be an LED lamp which comprises a circuit board and is electrically connected to the circuit, is green and environment-friendly, does not contain pollution elements such as lead and mercury, has no pollution to the environment, and is long in service life and remarkable in energy-saving effect.

As shown in fig. 6, fig. 6 is a cross-sectional view of the uv light source of fig. 2. In some embodiments, the ultraviolet light source 1 comprises a carrier 11, and a plurality of excimer lamps 12 and filters 4 disposed on the carrier 11. Because the excimer lamps 12 can emit deep ultraviolet light, the excimer lamps 12 are intensively arranged on the bearing part 11, and then the optical filter is arranged on the light emitting side of the excimer lamps 12, on one hand, the structure of the ultraviolet light source 1 can be integrated, and the light emitting effect of the ultraviolet light source 1 is ensured; in addition, the installation and maintenance of the ultraviolet light source 1 are convenient.

The excimer lamp 12 is an ultraviolet excimer lamp, which is also called ultraviolet excimer lamp, and bombards rare gas inside the lamp tube with high voltage and high frequency outside the ultraviolet lamp tube to emit single 172nm ultraviolet ray with photon energy up to 696KJ/mol, which is higher than most organic molecular bond energy. By utilizing the single high-strength ultraviolet ray, the optical cleaning and optical modification in the manufacture of semiconductors and liquid crystal screens can be realized, the treatment effect is good, and the speed is high.

The excimer lamp has the advantages of short wavelength of 12, high luminous efficiency and small influence on products; the static electricity removal treatment can be carried out while the irradiation is carried out; harmful substances such as mercury are not filled in the discharge tube, and no negative influence is generated on the environment. Thus, the ultraviolet light source 1 composed of a plurality of excimer lamps 12 arranged on the bearing member 11 can improve the sterilization effect and ensure the environmental safety; in addition, the optical filter and the ultraviolet light source 1 are integrated into an integral light source structure, so that the number of parts can be reduced under the condition of meeting performance requirements, and the cost is effectively controlled.

Specifically, the filter 4 may be a filter, and since the filter is a commonly used filter 4, it is mainly used as auxiliary dispersion, which can effectively control the cost.

The filter and the ultraviolet light source 1 may be integrated or separately provided, and the filter 4 may be made of gas or solution, and the filter 4 is not particularly limited.

Specifically, the carrier 11 may have a structure in which a layer of aluminum nitride is attached to a silicone substrate as an insulator, and a plurality of micro holes are formed in the silicon substrate, so that the insulating layer is not required to be peeled, the process is greatly shortened, damage to the excimer lamp 12 is avoided when the insulating layer is peeled, and the light emitting efficiency is improved.

As shown in fig. 6, in some embodiments, the light-emitting side of the ultraviolet light source 1 is provided with a filter 4 for passing deep ultraviolet light. In this way, the light emitted from the light-emitting side of the ultraviolet light is filtered by the filter 4 to filter the non-set light emitted from the ultraviolet light source 1, so that the light with the set wavelength band passes through the filter, and the light with the set wavelength band is selected.

The deep ultraviolet light is light having a wavelength of 200nm to 350 nm.

Specifically, the filter 4 may employ a band-adjustable filter 4, i.e., the band value or the band range is adjustable; a filter having a single band value or band range may also be used, and is not particularly limited herein.

The light-emitting side of the ultraviolet light source 1 is provided with the filter 4, so that the filter 4 can set a filter band for the deep ultraviolet light in the band to pass through according to actual needs.

In some embodiments, the filter 4 may pass deep ultraviolet light having a wavelength of 222nm or 207 nm. As a result of research, it is found that the deep ultraviolet light has a main peak in a wavelength range of 190nm to 230nm, especially, the wavelength of 222nm or 207nm, which is safer than the deep ultraviolet light having a wavelength of 230nm to 285nm, for example, thereby improving the safety of the lighting device 100.

To more clearly illustrate the optical effect of the lighting device in the embodiment of the present application, the following is compared with the illumination cloud chart:

as shown in fig. 7, fig. 7 is an illuminance cloud chart of light emitted by the lighting device in the application example, the left side chart in the drawing is a light spot distribution diagram in the front view direction, the right side is a scale for representing the intensity of light energy, a rectangular area in the X direction (-1000 mm) and the Y direction (-500 mm) is cut, and as can be seen from the cloud chart in fig. 7, the difference of the color depth in the rectangular area is small; FIG. 8 is a graph showing the distribution of the illuminance curve in the X direction in FIG. 7; fig. 9 is a distribution diagram of the illumination curve in the Y direction in fig. 7, and it can be seen from fig. 8 and 9 that the illumination intensity at the position of 0mm is the highest, which can reach 1500Lux, the illumination intensity decreases towards two sides, and the curve changes continuously and uninterruptedly, so that it can be known that the illumination device in the embodiment of the present application can obviously improve the uniformity of illumination.

As shown in fig. 10, fig. 10 is a cloud chart of the radiation illuminance of light emitted by the lighting device in the application example, wherein the shade of the color of the light spot represents the intensity of light energy, and a rectangular area in the X direction (-1000 mm) and the Y direction (-500 mm) is cut out, and as can be seen from the cloud chart in fig. 10, the difference of the shade of the color in the rectangular area is small; FIG. 11 is a graph showing the distribution of the irradiance profile in the X-direction of FIG. 10, and FIG. 12 is a graph showing the distribution of the irradiance profile in the Y-direction of FIG. 8, and it can be seen from FIGS. 11 and 12 that the irradiance intensity is 1 × 10 in the whole range ^-6 W/mm ² Above, the irradiation curve fluctuation is not big, and therefore it can be known that the illumination device in the embodiment of the application can not only reach the sterilization and disinfection effect well, but also can obviously improve the uniformity of radiation illumination.

The above description is only for the specific embodiments of the present application, but the scope of the present application is not limited thereto, and any person skilled in the art can easily conceive of the changes or substitutions within the technical scope of the present application, and shall be covered by the scope of the present application. Therefore, the protection scope of the present application shall be subject to the protection scope of the claims.

Claims (10)

1. An illumination device, comprising:

an ultraviolet light source (1);

an illumination light source (2);

the reflector (3) is provided with a reflecting cavity (31), and one side of the reflecting cavity (31) is provided with a light outlet (32);

wherein at least a part of the ultraviolet light source (1) and the illumination light source (2) are arranged in the reflection cavity (31), and the inner wall (33) of the reflection cavity (31) can reflect at least a part of the light rays emitted by the ultraviolet light source (1) and the illumination light source (2) out of the reflection cavity (31) through the light outlet (32).

2. The lighting device of claim 1,

the inner wall (33) comprises a plurality of sub-inner walls (331) arranged around the ultraviolet light source (1); for each sub-inner wall (331), in a cross section perpendicular to a depth direction (Z) of the reflective cavity (31), the sub-inner wall (331) is bent away from the ultraviolet light source (1) to enclose a first region (34).

3. The lighting device of claim 2,

the number of the illumination light sources (2) is multiple, a plurality of the illumination light sources (2) are arranged around the ultraviolet light source (1), and at least one part of each illumination light source (2) is arranged in the first area (34) enclosed by the corresponding sub inner wall (331).

4. The lighting device of claim 3,

each of the sub inner walls (331) is a paraboloid.

5. The lighting device of claim 4,

each illumination light source (2) is arranged at the focus of the corresponding sub-inner wall (331).

6. A lighting device as recited in any one of claims 1-5,

and the light outlet side of the ultraviolet light source (1) is provided with an optical filter (4) through which deep ultraviolet light can pass.

7. The lighting device of claim 6,

the filter (4) can be used for passing through deep ultraviolet light with the wavelength of 222nm or 207 nm.

8. The lighting device of claim 6,

the ultraviolet light source (1) comprises a bearing piece (11) and a plurality of excimer lamps (12) arranged on the bearing piece (11); and/or the optical filter (4) is an optical filter.

9. A lighting device as recited in any one of claims 1-5,

light source (2) are the COB light source, the COB light source includes base plate (21) and is used for giving out white light LED chip (22), LED chip (22) set up in on base plate (21).

10. A lighting device as recited in any one of claims 1-5,

the reflector (3) is an aluminum reflector.

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