CN213146437U - Lighting device and lighting system - Google Patents
Lighting device and lighting system Download PDFInfo
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- CN213146437U CN213146437U CN202022444088.XU CN202022444088U CN213146437U CN 213146437 U CN213146437 U CN 213146437U CN 202022444088 U CN202022444088 U CN 202022444088U CN 213146437 U CN213146437 U CN 213146437U
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Abstract
The utility model relates to an automotive lighting field, more specifically relates to a lighting device and lighting system. Providing a lighting device, wherein first light rays emitted by a first light emitter are emitted into a reflecting cup and reflected to the opening direction of the reflecting cup by the reflecting cup to form first lighting; laser emitted by the laser module is guided to the lens module by the light guide module and focused on the wavelength conversion device by the lens module to form stimulated laser, and the stimulated laser passes through the lens module to form parallel light; or the laser emitted by the laser module is guided to the wavelength conversion device by the light guide module to form a stimulated light, and the stimulated light passes through the lens module to form parallel light; the parallel light forms a central illumination. The problems of insufficient central illumination and non-concentrated light beams during illumination are solved.
Description
Technical Field
The utility model relates to an automotive lighting field, more specifically relates to a lighting device and lighting system.
Background
The existing automobile headlamps comprise halogen lamps, xenon lamps and LED lamps. The halogen lamp is low in price, but high in energy consumption, poor in brightness, large in heat productivity, capable of emitting yellow light mostly, low in illumination and easy to age. Xenon lamps (HID) have an intensity of illumination three times higher than halogen lamps, but consume only two times of their energy; the xenon lamp adopts the light color which is nearly the same as that of sunlight, creates better visual conditions for drivers, and has longer service life. However, xenon lamps are expensive, complicated to assemble and poor in light-condensing properties, and although the amount of heat generated by xenon lamps is smaller than that of halogen lamps, it is not so low. The LED lamp is a new green lighting high-tech industry, especially the LED-COB light source has the characteristics of green environmental protection, high brightness, high efficiency and energy conservation, and the LED lamp is used as a cold light source, so that the temperature of the LED lamp is low, the service life of the LED lamp is prolonged, and the LED lamp is deeply favored by various car lamp manufacturers and car owners in the field of car lamps.
However, when lighting, due to the limitation of the brightness of the current LED light source, the lighting beam usually has the problems of insufficient central illumination and non-concentrated light beam.
SUMMERY OF THE UTILITY MODEL
The utility model discloses aim at overcoming above-mentioned prior art at least one kind defect (not enough), provide a lighting device and lighting system for central illumination is not enough, the not concentrated problem of light beam when solving the illumination.
The technical scheme adopted by the utility model is that a lighting device is provided, which comprises a reflecting cup, a first light emitter, a radiator, a substrate, a laser module, a wavelength conversion device, a light guide module and a lens module; the radiator is arranged at one end part of the substrate, the first light emitter is arranged at least one side surface of the substrate, the reflecting cup is arranged behind the first light emitter, and the substrate is arranged in the central area of the reflecting cup; a first light ray emitted by the first light emitter is emitted into the light reflecting cup and reflected by the light reflecting cup to form a first illumination; the laser module is arranged above one side of the substrate, and the direction of laser emitted by the laser module is consistent with the opening direction of the reflecting cup; the wavelength conversion device is arranged in front of the other end of the substrate, and the lens module is arranged in front of the wavelength conversion device; the light guide module is arranged on the laser path and used for guiding the laser to the lens module or the wavelength conversion device; the laser emitted by the laser module is guided to the lens module by the light guide module and focused on the wavelength conversion device by the lens module to form a received laser, and the received laser forms parallel light through the lens module; or the laser emitted by the laser module is guided to the wavelength conversion device by the light guide module to form a stimulated light, and the stimulated light forms parallel light through the lens module; the parallel light forms a central illumination.
The central illumination is formed by laser in the central area of the reflecting cup through the wavelength conversion device and the lens module, and the first illumination is formed by first light rays emitted by the first light emitter. After the central illumination and the first illumination are superposed, the central illumination can improve the central illumination of the first illumination, and the central illumination and the first illumination are parallel light rays, so that the illumination range of the centralized illumination device is facilitated, and the central illumination is improved.
The wavelength conversion device is provided with a fluorescent material, and the fluorescent material can generate excited light after being irradiated by laser. The laser beam is emitted into the lens module. The lens module can become the light of parallel with the comparison light that diverges from point light source, uses the lens module to become parallel light by laser, is favorable to lighting device's illumination zone to concentrate more, improves central illumination.
The laser module should be connected with the radiator, perhaps should set up heat abstractor on the laser module, in time with the heat effluvium that the laser module produced, guarantee the normal use of laser module.
Furthermore, the middle part of the reflection cup is provided with an opening for enabling laser emitted by the laser module to pass through the reflection cup, and the substrate penetrates through the opening to be connected with the radiator.
The reflection of light cup can reflect the first light that first light emitter sent to reflection of light cup opening direction to the first light that makes the collection becomes parallel light beam, is favorable to strengthening the concentration degree of light beam and makes lighting device's illumination zone more concentrated, improves central illuminance.
Further, the laser module comprises a laser, the laser is arranged above one side of the substrate and emits laser, and the laser direction is consistent with the opening direction of the reflection cup.
The laser is connected with the radiator or the heat dissipation device, laser emitted by the laser is high-energy light, and the laser can generate a large amount of heat, so that the radiator connected with the laser is required to dissipate heat of the laser, and normal use of the lighting device can be guaranteed.
Further, the lens module includes collimating lens and lens, lens setting is in collimating lens front end, and lens and collimating lens are used for receiving the laser collimation, form the parallel light.
The collimating lens can collimate the light rays incident therein into parallel light. The collimating lens can also focus the injected laser light on the wavelength conversion device, so that the laser light forms the stimulated light. The lens module is arranged in the central area of the lighting device, so that the formed parallel light can supplement the center of the light emitted by the lighting device, the light beams are concentrated, and the central illumination is improved.
Preferably, the light guide module comprises a plurality of light guide bodies for guiding the laser light emitted by the laser into the collimating lens. In this case, the wavelength conversion device is a metal mirror surface coated with a fluorescent material.
When the light guide module comprises a plurality of light guide bodies, the plurality of light guide bodies guide laser emitted by the laser to the collimating lens, the collimating lens focuses the laser to the top of the wavelength conversion device, the fluorescent material on the surface of the wavelength conversion device generates received laser after being irradiated by the laser, the received laser emits into the lens module from the top of the wavelength conversion device, and the received laser is collimated into parallel light by the lens and the collimating lens and then emits towards the opening of the light reflecting cup.
The light guide body in the light guide module guides the laser to the collimating lens in a reflection mode. The position and the number of the light guiding bodies can be designed according to actual requirements. The wavelength conversion device emits the received laser light to the collimating lens and the lens in a reflection mode. The wavelength conversion device should be a highly reflective, high temperature resistant substrate.
Preferably, the light guide module may also include only one light guide body for guiding the laser light emitted by the laser to the wavelength conversion device. At this time, the wavelength conversion device is a sapphire or quartz substrate on which a fluorescent material is coated.
When the light guide module only comprises one light guide body, namely the first light guide body, the first light guide body directly guides laser emitted by the laser to the bottom of the wavelength conversion device in a transmission mode, the fluorescent material on the wavelength conversion device generates stimulated light after being irradiated by the laser, the stimulated light emits to the lens module from the top of the wavelength conversion device, and the stimulated light is collimated into parallel light by the lens and the collimating lens and emits towards the opening direction of the light reflecting cup.
The wavelength conversion device emits the received laser light to the collimating lens and the lens in a transmission mode. In this case, the wavelength conversion device should be a transparent substrate with high thermal conductivity.
Further, the first light emitter is an LED chip.
The utility model also provides a lighting system, include lighting device and control module, lighting device is connected with control module, control module is used for controlling lighting device to form central illumination and/or first illumination.
The user can control the light emitted by the lighting device through the control module according to the actual lighting requirement.
Compared with the prior art, the beneficial effects of the utility model are that: an illumination device is provided that emits a concentrated beam of light with a center illumination that is sufficiently high to form a center illumination and/or a first illumination.
Drawings
FIG. 1 is a structural view of example 1.
Fig. 2 is a structural view of a wavelength conversion device in example 1.
FIG. 3 is a structural view of embodiment 2.
Fig. 4 is a structural diagram of a wavelength conversion device in example 2.
Fig. 5 is a diagram of an illumination system of embodiment 3.
Description of the specific figures: the light source device comprises a reflector cup 1, a first light emitter 2, a heat sink 3, a substrate 4, a laser module 5, a laser 51, a wavelength conversion device 6, a first light guide body 71, a second light guide body 72, a lens module 8, a collimating lens 81, a lens 82, a first light ray 10 and a laser 20.
Detailed Description
The drawings of the present invention are for illustration purposes only and are not to be construed as limiting the invention. For a better understanding of the following embodiments, certain features of the drawings may be omitted, enlarged or reduced, and do not represent the size of an actual product; it will be understood by those skilled in the art that certain well-known structures in the drawings and descriptions thereof may be omitted.
Example 1
As shown in fig. 1 and fig. 2, the technical solution of the present embodiment is to provide an illumination device, which includes a reflective cup 1, a first light emitter 2, a heat sink 3, a substrate 4, a laser module 5, a wavelength conversion device 6, a light guiding module, and a lens module 8; the radiator 3 is arranged at one end part of the substrate 4; the first light emitter 2 is arranged on at least one side surface of the substrate 4; the reflecting cup 1 is arranged behind the first light emitter 2, and the substrate 4 is arranged in the central area of the reflecting cup 1; the opening direction of the reflecting cup 1 is the direction of the first luminous body 2; a first light ray 10 emitted by the first light emitter 2 is emitted into the reflective cup 1 and reflected by the reflective cup 1 to form a first illumination; the laser module 5 is arranged above one side of the substrate 4, the laser module 5 emits laser 20, and the direction of the laser 20 is consistent with the opening direction of the reflecting cup 1; the wavelength conversion device 6 is arranged in front of the other end of the substrate 4; the lens module 8 is arranged in front of the wavelength conversion device 6; the light guide module is arranged on the path of the laser 20 and is used for guiding the laser 20 to the lens module 8 or the wavelength conversion device 6; the laser 20 emitted by the laser module 5 is guided to the lens module 8 by the light guide module and focused to the wavelength conversion device 6 by the lens module 8 to form a received laser, and the received laser forms parallel light through the lens module 8; or the laser 20 emitted by the laser module 5 is guided onto the wavelength conversion device 6 by the light guide module to form a received laser, and the received laser forms parallel light through the lens module 8; the parallel light forms a central illumination.
The central illumination is formed by the laser 20 via the wavelength conversion device 6 and the lens module 8 in the central area of the reflector cup 1, and the first illumination is formed by the first light 10 emitted by the first light emitter 2. After the central illumination and the first illumination are superposed, the central illumination can improve the central illumination of the first illumination, and the central illumination and the first illumination are parallel light rays, so that the illumination range of the centralized illumination device is facilitated, and the central illumination is improved.
The central illumination and the first illumination may be emitted separately or together.
The wavelength conversion device 6 is provided with a fluorescent material, and the fluorescent material generates excited light after being irradiated by the laser 20. The laser beam is incident on the lens module 8. Lens module 8 can become the light of parallel with the comparison light of dispersing from point light source, uses lens module 8 to become the collimated light by laser, is favorable to lighting device's illumination zone to concentrate more, improves central illumination.
The laser module 5 should be connected with the radiator 3, or should set up heat abstractor on the laser module 5, in time with the heat effluvium that laser module 5 produced, guarantee laser module 5's normal use.
Preferably, the number of the first luminous bodies 2 and the mounting position on at least one side of the base plate 4 may be designed according to actual requirements. The number of the first light emitters 2 may be several or several tens or even several hundreds, and the first light emitters 2 may be mounted on both upper and lower sides of the base plate 4 or only one side thereof.
Furthermore, an opening is formed in the middle of the reflection cup 1, so that laser 20 emitted by the laser module 5 passes through the reflection cup 1, and the substrate 4 penetrates through the opening to be connected with the radiator 3.
The reflector cup 1 should be installed behind all the first luminaries 2 to ensure that the first light rays 10 emitted from all the first luminaries 2 can be collected. As a possible embodiment, the reflector cup 1 may be arranged behind the substrate 4, the heat sink 3 and the laser module 5, in which case the reflector cup 1 does not need to be provided with openings.
Anti-light cup 1 can reflect the first light 10 that first luminophor 2 sent to anti-light cup 1 opening direction to make the first light 10 of collecting become parallel light beam, be favorable to strengthening the concentration degree of light beam and make lighting device's illumination zone more concentrated, improve central illuminance.
Further, the laser module 5 comprises a laser 51, the laser 51 is installed above one side of the substrate 4, and emits laser 20, and the direction of the laser 20 is consistent with the opening direction of the reflective cup 1.
The laser 51 is connected with the heat sink 3 or the heat dissipation device, the laser 20 emitted by the laser 51 is a high-energy light, and the laser 51 generates a large amount of heat, so that the heat dissipation of the laser 51 by the heat sink 3 is needed to ensure the normal use of the lighting device.
Further, the lens module 8 includes a collimating lens 81 and a lens 82, the lens 82 is disposed at the front end of the collimating lens 81, and the lens 82 and the collimating lens 81 are used for collimating the received laser light to form parallel light.
The collimating lens 81 can collimate the light rays incident therein into parallel light. The collimator lens 81 is also used to focus the incident laser light 20 on the wavelength conversion device 6, so that the laser light 20 becomes an excited light. The lens module 8 is arranged in the central area of the lighting device, so that the formed parallel light can supplement the center of the light emitted by the lighting device, concentrate the light beams and improve the central illumination.
Preferably, the lens module 8 includes at least one optical lens, such as a collimating lens 81 or a lens 82.
Preferably, the light guiding module includes a plurality of light guiding bodies for guiding the laser light 20 emitted from the laser 51 to the collimating lens 81. In this case, the wavelength conversion device 6 is a metal mirror surface coated with a fluorescent material.
When the light guide module comprises a plurality of light guide bodies, the plurality of light guide bodies guide the laser 20 emitted by the laser 51 into the collimating lens 81, the collimating lens 81 focuses the laser 20 on the top of the wavelength conversion device 6, the fluorescent material on the surface of the wavelength conversion device 6 is irradiated by the laser 20 to generate received laser, and the received laser is emitted into the lens module 8 from the top of the wavelength conversion device 6, collimated into parallel light by the lens 82 and the collimating lens 81, and emitted towards the opening of the light reflecting cup 1.
The light guide body in the light guide module guides the laser light 20 into the collimating lens 81 by way of reflection. The position and the number of the light guiding bodies can be designed according to actual requirements. Preferably, the light guiding module may include a first light guiding body 71, a second light guiding body 72, the first light guiding body 71 being disposed on the path of the laser light 20 for guiding the laser light 20 onto the second light guiding body 72; the second light guiding body 72 is arranged between the lens 82 and the collimating lens 81 for guiding the laser light 20 onto the collimating lens 81.
Preferably, the light guiding module may further include a first light guiding body 71, a second light guiding body 72, and a third light guiding body, wherein the first light guiding body 71 is disposed on the path of the laser light 20, and guides the laser light 20 emitted from the laser 51 to the second light guiding body 72, the second light guiding body 72 guides the laser light 20 to the third light guiding body disposed between the lens 82 and the collimating lens 81, and the third light guiding body guides the laser light 20 to the collimating lens 81.
The wavelength conversion device 6 emits the received laser light into the collimator lens 81 and the lens 82 by way of reflection. The wavelength conversion device 6 should be a highly reflective, high temperature resistant substrate.
Further, the first light emitter 2 is an LED chip.
Example 2
As shown in fig. 3 and 4, the present embodiment provides an illumination device, which includes a reflective cup 1, a first light emitter 2, a heat sink 3, a substrate 4, a laser module 5, a wavelength conversion device 6, a light guiding module, and a lens module 8; the radiator 3 is arranged at one end part of the substrate 4; the first light emitter 2 is arranged on at least one side surface of the substrate 4; the reflecting cup 1 is arranged behind the first light emitter 2, and the substrate 4 is arranged in the central area of the reflecting cup 1; the opening direction of the reflecting cup 1 is the direction of the first luminous body 2; a first light ray 10 emitted by the first light emitter 2 is emitted into the reflective cup 1 and reflected by the reflective cup 1 to form a first illumination; the laser module 5 is arranged above one side of the substrate 4, the laser module 5 emits laser 20, and the direction of the laser 20 is consistent with the opening direction of the reflecting cup 1; the wavelength conversion device 6 is arranged in front of the other end of the substrate 4; the lens module 8 is arranged in front of the wavelength conversion device 6; the light guide module is arranged on the path of the laser 20 and is used for guiding the laser 20 to the lens module 8 or the wavelength conversion device 6; the laser 20 emitted by the laser module 5 is guided onto the lens module 8 by the light guide module and focused onto the wavelength conversion device 6 by the lens module 8 to form a stimulated light, and the stimulated light passes through the lens module 8 to form parallel light; or the laser 20 emitted by the laser module 5 is guided onto the wavelength conversion device 6 by the light guide module to form a stimulated light, and the stimulated light passes through the lens module 8 to form parallel light; the parallel light forms a central illumination.
The central illumination is formed by the laser light 20 and the first illumination is formed by the first light rays 10 emitted by the first light emitter 2. The central illumination and the first illumination are parallel light rays, so that the illumination range of the centralized illumination device is facilitated, and the central illumination is improved.
The wavelength conversion device 6 is provided with a fluorescent material, and the fluorescent material generates excited light after being irradiated by the laser 20. The laser beam is incident on the lens module 8. Lens module 8 can become the light of parallel with the comparison light of dispersing from point light source, uses lens module 8 to become the collimated light by laser, is favorable to lighting device's illumination zone to concentrate more, improves central illumination.
The laser module 5 should be connected with the radiator 3, or should set up heat abstractor on the laser module 5, in time with the heat effluvium that laser module 5 produced, guarantee laser module 5's normal use.
Preferably, the number of the first luminous bodies 2 and the mounting position on at least one side of the base plate 4 may be designed according to actual requirements. The number of the first light emitters 2 may be several or several tens or even several hundreds, and the first light emitters 2 may be mounted on both upper and lower sides of the base plate 4 or only one side thereof.
Furthermore, an opening is formed in the middle of the reflection cup 1, so that laser 20 emitted by the laser module 5 passes through the reflection cup 1, and the substrate 4 penetrates through the opening to be connected with the radiator 3.
The reflector cup 1 should be installed behind all the first luminaries 2 to ensure that the first light rays 10 emitted from all the first luminaries 2 can be collected. As a possible embodiment, the reflector cup 1 may be arranged behind the substrate 4, the heat sink 3 and the laser module 5, in which case the reflector cup 1 does not need to be provided with openings.
Anti-light cup 1 can reflect the first light 10 that first luminophor 2 sent to anti-light cup 1 opening direction to make the first light 10 of collecting become parallel light beam, be favorable to strengthening the concentration degree of light beam and make lighting device's illumination zone more concentrated, improve central illuminance.
Further, the laser module 5 comprises a laser 51, the laser 51 is installed above one side of the substrate 4, and emits laser 20, and the direction of the laser 20 is consistent with the opening direction of the reflective cup 1.
The laser 51 is connected with the heat sink 3 or the heat dissipation device, the laser 20 emitted by the laser 51 is a high-energy light, and the laser 51 generates a large amount of heat, so that the heat dissipation of the laser 51 by the heat sink 3 is needed to ensure the normal use of the lighting device.
Further, the lens module 8 includes a collimating lens 81 and a lens 82, the lens 82 is disposed at the front end of the collimating lens 81, and the lens 82 and the collimating lens 81 are used for collimating the received laser light to form parallel light.
Preferably, the lens module 8 includes at least one optical lens, such as a collimating lens 81 or a lens 82.
The collimating lens 81 can collimate the light rays incident therein into parallel light. The collimator lens 81 is also used to focus the incident laser light 20 on the wavelength conversion device 6, so that the laser light 20 becomes an excited light. The lens module 8 is arranged in the central area of the lighting device, so that the formed parallel light can supplement the center of the light emitted by the lighting device, concentrate the light beams and improve the central illumination.
Preferably, the light guiding module comprises only one first light guiding body 71 for guiding the laser light 20 emitted by the laser 51 onto the wavelength conversion device 6. At this time, the wavelength conversion device 6 is a sapphire or quartz substrate on which a fluorescent material is coated.
When the light guiding module only comprises one light guiding body, namely the first light guiding body 71, the first light guiding body 71 directly guides the laser 20 emitted by the laser 51 to the bottom of the wavelength conversion device 6 in a transmission manner, the fluorescent material on the wavelength conversion device 6 generates the stimulated light after being irradiated by the laser 20, the stimulated light is emitted to the lens module 8 from the top of the wavelength conversion device 6, and the collimated light is emitted towards the opening of the reflector cup 1 by the lens 82 and the collimating lens 81.
The wavelength conversion device 6 transmits the received laser light to the collimating lens 81 and the lens 82. In this case, the wavelength conversion device 6 should be a transparent substrate with high thermal conductivity.
Further, the first light emitter 2 is an LED chip.
Example 3
As shown in fig. 5, the present embodiment provides a lighting system, which includes the lighting device and a control module, wherein the lighting device is connected to the control module, and the control module is used for controlling the lighting device to form a central lighting and/or a first lighting.
The user can control the light emitted by the lighting device through the control module according to the actual lighting requirement.
It is obvious that the above embodiments of the present invention are only examples for clearly illustrating the technical solutions of the present invention, and are not limitations to the specific embodiments of the present invention. Any modification, equivalent replacement, and improvement made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.
Claims (10)
1. An illumination device is characterized by comprising a reflecting cup, a first light emitter, a radiator, a substrate, a laser module, a wavelength conversion device, a light guide module and a lens module;
the radiator is arranged at one end part of the substrate, the first light emitter is arranged at least one side surface of the substrate, the reflecting cup is arranged behind the first light emitter, and the substrate is arranged in the central area of the reflecting cup; a first light ray emitted by the first light emitter is emitted into the reflective cup and reflected to the opening direction of the reflective cup to form first illumination;
the laser module is arranged above one side of the substrate, and the direction of laser emitted by the laser module is consistent with the opening direction of the reflecting cup; the wavelength conversion device is arranged in front of the other end of the substrate, and the lens module is arranged in front of the wavelength conversion device; the light guide module is arranged on the laser path and used for guiding the laser to the lens module or the wavelength conversion device;
the laser emitted by the laser module is guided to the lens module by the light guide module and focused on the wavelength conversion device by the lens module to form a received laser, and the received laser forms parallel light through the lens module; or the laser emitted by the laser module is guided to the wavelength conversion device by the light guide module to form a stimulated light, and the stimulated light forms parallel light through the lens module; the parallel light forms a central illumination.
2. A lighting device as claimed in claim 1, wherein an opening is formed in the middle of the reflector cup for allowing the laser beam emitted from the laser module to pass through the reflector cup, and the substrate passes through the opening and is connected to the heat sink.
3. The illumination device as claimed in claim 1, wherein the laser module comprises a laser, the laser is mounted above one side of the substrate and emits laser light, and the laser light direction is consistent with the opening direction of the light reflecting cup.
4. A lighting device as recited in claim 1, wherein said lens module comprises a collimating lens and a lens, said lens is disposed in front of said collimating lens, and said lens and said collimating lens are configured to collimate said received light to form parallel light.
5. A lighting device as recited in claim 1, wherein said light directing module comprises a plurality of light directing bodies for directing laser light emitted by said laser into said collimating lens.
6. A lighting device as claimed in claim 5, wherein said wavelength conversion means is a metal mirror coated with a fluorescent material.
7. A lighting device as recited in claim 1, wherein said light directing module comprises a light directing body for directing laser light from said laser onto said wavelength conversion device.
8. An illumination device according to claim 7, wherein the wavelength conversion device is a sapphire or quartz substrate coated with a fluorescent material.
9. A lighting device as recited in claim 1, wherein said first light emitter is an LED chip.
10. A lighting system comprising a lighting device as claimed in any one of claims 1 to 9 and a control module, the lighting device being connected to the control module, the control module being adapted to control the lighting device to form a central lighting and/or a primary lighting.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022444088.XU CN213146437U (en) | 2020-10-28 | 2020-10-28 | Lighting device and lighting system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022444088.XU CN213146437U (en) | 2020-10-28 | 2020-10-28 | Lighting device and lighting system |
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| Publication Number | Publication Date |
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| CN213146437U true CN213146437U (en) | 2021-05-07 |
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| CN202022444088.XU Active CN213146437U (en) | 2020-10-28 | 2020-10-28 | Lighting device and lighting system |
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| CN (1) | CN213146437U (en) |
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