Illuminating device and panel lamp
By using a combined design of light emitting parts, reflective cups and electronic atomizers in the lighting device, the complex structure of the existing lighting device is solved, and the flexible adjustment of the emitted light beam is achieved, which reduces cost and weight and improves production and use convenience.
Patent Information
- Application Number
- CN202421029982.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-05-10
- Publication Date
- 2025-02-14
- Estimated Expiration
- 2034-05-10
AI Technical Summary
The existing lighting devices have complex structures, resulting in high costs and high weight, which is not conducive to production and use.
The lighting device design is adopted that includes a light emitting device, a reflective cup and an electronic atomizer sheet. The light beam is adjusted to a collimated beam through the reflective cup, and the electronic atomizer sheet adjusts the transparency to adjust the beam angle to achieve the concentrated or flooded state of the emitted beam.
Without moving the electronic atomization sheet, the beam angle adjustment of the emitted beam is achieved, reducing structural complexity, reducing cost and weight, and conducive to production and use.
Smart Images
Figure CN222482577U_ABST
Abstract
Description
Technical Field
[0001] The present application belongs to the technical field of lighting equipment, and more specifically, relates to a lighting device and a panel light. Background Art
[0002] Fill light processing is often required when recording or taking photos. In order to adjust the beam angle of the light beam emitted by the light source in the lighting device to meet the fill light requirement, the light source usually needs to be equipped with a beam adjustment structure that can adjust the beam angle of the light beam.
[0003] The existing light beam adjustment structure includes a Fresnel lens and a driving mechanism for driving the Fresnel lens to move. When the light beam adjustment structure adjusts the beam angle of the light beam emitted by the light source, the driving mechanism needs to drive the Fresnel lens to move closer to or away from the light source so that the beam angle of the light beam emitted from the Fresnel lens can be changed. The above-mentioned design concept leads to a complex structure of the existing lighting device, which results in the lighting device not only being high in cost but also being heavy, which is not conducive to production and use. Utility Model Content
[0004] The purpose of the embodiments of the present application is to provide a lighting device and a panel light, aiming to solve the technical problem of the complex structure of the lighting device in the prior art.
[0005] To achieve the above-mentioned purpose, according to one aspect of the present application, a lighting device is provided, including: a light-emitting member, used to emit a lighting beam; a reflective cup, arranged on one side of the light-emitting member, used to receive the lighting beam and adjust the lighting beam into a collimated beam; an electronic atomization sheet, fixed on a side of the reflective cup away from the light-emitting member, used to receive the collimated beam and adjust the collimated beam into an emitted beam, and the transparency of the electronic atomization sheet can be adjusted so that the beam angle of the emitted beam can be adjusted.
[0006] Optionally, the reflective cup has a reflective cavity for reflecting the illumination light beam into a collimated light beam, and the reflective cavity has a first cavity opening for the illumination light beam to enter the reflective cavity and a second cavity opening for the collimated light beam to emit outwards.
[0007] Optionally, the light-emitting component has a light-emitting surface, the diameter of the light-emitting surface of the light-emitting component is a first diameter, the diameter of the first cavity opening of the reflective cavity is a second diameter, the light-emitting surface of the light-emitting component is coaxial with the first cavity opening of the reflective cavity, and the second diameter is greater than or equal to the first diameter.
[0008] Optionally, the diameter of the second cavity opening of the reflective cavity is the third diameter, the distance between the first cavity opening of the reflective cavity and the second cavity opening of the reflective cavity is the first distance, and the ratio of the first distance to the third diameter is in the range of 0.5-1.1.
[0009] Optionally, the light-emitting element is a multi-color light source, and the lighting device further includes a light homogenizer, which is arranged between the reflective cup and the electronic atomization sheet and is used to evenly mix the collimated light beam.
[0010] Optionally, the light homogenizer is a compound eye light homogenizer, which has a plane and a convex surface opposite to the plane. The convex surface of the compound eye light homogenizer is located on the side of the plane of the compound eye light homogenizer close to the electronic atomization sheet, and a plurality of cross-distributed lens units are arranged on the convex surface of the compound eye light homogenizer.
[0011] Optionally, the reflective cup has a reflective cavity for reflecting the illumination light beam into a collimated light beam, and the reflective cavity has a second cavity opening for the collimated light beam to emit outward; the diameter of the second cavity opening of the reflective cavity is a third diameter; the spacing between the second cavity opening of the reflective cavity and the plane of the compound eye homogenizer is a second spacing, and the ratio of the second spacing to the third diameter is in the range of 0.5-2.
[0012] Optionally, the electronic atomization sheet includes a supporting layer and an adjustment layer installed on the supporting layer, the adjustment layer includes: a polymer dispersed liquid crystal layer, the polymer dispersed liquid crystal layer is used to adjust the transparency under the action of a preset electric field; a transparent conductive layer, the transparent conductive layer is coated on the surface of the polymer dispersed liquid crystal layer, and is used to receive a voltage within a preset voltage range to form a preset electric field.
[0013] Optionally, the lighting device further comprises a mounting bracket, the mounting bracket has a mounting cavity, and the light-emitting element and the reflective cup are both mounted in the mounting cavity.
[0014] According to another aspect of the present application, a panel light is provided. The panel light includes a plurality of the above-mentioned lighting devices, and two adjacent lighting devices are spliced with each other.
[0015] The beneficial effect of the lighting device provided by the present application is that, compared with the prior art, when the lighting device of the present application needs to make the emitted light beam in a focusing state, since the lighting light beam emitted by the light-emitting component is adjusted to a collimated light beam by the reflective cup, its beam angle is small, and it is only necessary to increase the transparency of the electronic atomization sheet. At this time, the beam angle of the emitted light beam emitted through the electronic atomization sheet remains small, and the emitted light beam is formed into a focusing light beam; when the emitted light beam needs to be in a floodlight state, it is only necessary to reduce the transparency of the electronic atomization sheet. At this time, the light beam of the emitted light beam emitted through the electronic atomization sheet will become larger, and the emitted light beam is formed into a floodlight beam; the lighting device of the present application can adjust the beam angle of the emitted light beam without driving the electronic atomization sheet to move, thereby reducing the structural complexity as well as the cost and weight, which is beneficial to production and use. BRIEF DESCRIPTION OF THE DRAWINGS
[0016] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.
[0017] Figure 1 A schematic diagram of a structure in which the light beam emitted by the panel lamp provided in the embodiment of the present application is a concentrated light beam;
[0018] Figure 2 A schematic diagram of a structure in which the emitted light beam emitted by the panel lamp provided in the embodiment of the present application is a flood light beam;
[0019] Figure 3 A schematic side view of the electronic atomization sheet provided in an embodiment of the present application;
[0020] Figure 4 A side view schematic diagram of the compound eye light homogenizer provided in an embodiment of the present application.
[0021] The reference numerals in the above drawings are as follows:
[0022] 100, reflective cup; 110, reflective cavity; 111, first cavity opening; 112, second cavity opening; 200, electronic atomization sheet; 210, polymer dispersed liquid crystal layer; 220, transparent conductive layer; 230, transparent protective layer; 240, supporting layer; 300, mounting bracket; 310, mounting cavity; 400, compound eye homogenizer; 410, plane; 420, convex surface; 500, light-emitting component. DETAILED DESCRIPTION
[0023] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present application more clearly understood, the present application is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application and are not used to limit the present application.
[0024] It should be noted that when an element is referred to as being "fixed to" or "disposed on" another element, it may be directly on the other element or indirectly on the other element. When an element is referred to as being "connected to" another element, it may be directly connected to the other element or indirectly connected to the other element. In the absence of conflict, the embodiments in this application and the features in the embodiments may be combined with each other. The present application will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.
[0025] It should be understood that the terms "length", "width", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.
[0026] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of this application, the meaning of "plurality" is more than two, unless otherwise clearly and specifically defined.
[0027] As described in the background technology, currently, fill light processing is often required when filming or taking photos. In order to adjust the beam angle of the light beam emitted by the light source in the lighting device to meet the fill light requirement, the light source is usually required to be equipped with a beam adjustment structure that can adjust the beam angle of the light beam. The existing beam adjustment structure includes a Fresnel lens and a driving mechanism for driving the Fresnel lens to move. When the beam adjustment structure adjusts the beam angle of the light beam emitted by the light source, the driving mechanism needs to drive the Fresnel lens to move closer to or away from the light source so that the beam angle of the light beam emitted from the Fresnel lens can be changed; the above-mentioned design idea leads to the complex structure of the existing lighting device, which results in the lighting device not only being high in cost but also heavy, which is not conducive to production and use.
[0028] Reference Figures 1 to 3 In order to solve the above problems, according to one aspect of the present application, an embodiment of the present application provides a lighting device, which includes a light-emitting member 500, a reflective cup 100 and an electronic atomization sheet 200. The light-emitting member 500 is used to emit a lighting beam; the reflective cup 100 is arranged on one side of the light-emitting member 500, and is used to receive the lighting beam and adjust the lighting beam to a collimated beam; the electronic atomization sheet 200 is fixed on a side of the reflective cup 100 away from the light-emitting member 500, and is used to receive the collimated beam and adjust the collimated beam to an emitted beam. The transparency of the electronic atomization sheet 200 can be adjusted so that the beam angle of the emitted beam can be adjusted.
[0029] In the embodiment of the present application, the light-emitting element 500 is generally an LED (English full name: Light Emitting Diode, Chinese name: light-emitting diode). In other embodiments, a collimator can also be used to adjust the illumination light beam into a collimated light beam; when the transparency of the electronic atomization sheet 200 is improved, the collimated light beam can directly pass through the electronic atomization sheet 200, so that the emitted light beam is formed into a focused light beam. When the transparency of the electronic atomization sheet 200 is reduced, the collimated light beam will be scattered in the electronic atomization sheet 200, so that the emitted light beam is formed into a floodlight beam.
[0030] When the lighting device of the present application needs to make the emitted light beam in a focusing state, since the lighting light beam emitted by the light-emitting element 500 is adjusted to a collimated light beam by the reflective cup 100, its beam angle is small. It is only necessary to increase the transparency of the electronic atomization sheet 200. At this time, the beam angle of the emitted light beam emitted through the electronic atomization sheet 200 remains small, and the emitted light beam is formed into a focusing light beam; when the emitted light beam needs to be in a floodlight state, it is only necessary to reduce the transparency of the electronic atomization sheet 200. At this time, the beam of the emitted light beam emitted through the electronic atomization sheet 200 will become larger, and the emitted light beam is formed into a floodlight beam; the lighting device of the present application can adjust the beam angle of the emitted light beam without driving the electronic atomization sheet 200 to move, thereby reducing the structural complexity as well as the cost and weight, which is beneficial to production and use.
[0031] Reference Figure 1 and Figure 2 In one embodiment, the reflective cup 100 has a reflective cavity 110 for reflecting the illumination beam into a collimated beam. The reflective cavity 110 has a first cavity opening 111 for the illumination beam to enter the reflective cavity 110 and a second cavity opening 112 for the collimated beam to emit outward.
[0032] In this embodiment, the cavity wall of the reflective cavity 110 is coated with a reflective layer with high reflectivity (such as a silver mirror coating or an aluminum film) or fixed with a scale reflective surface; to ensure the reflection effect, the cross-sectional shape of the reflective cavity 110 can be a parabola, a hyperbola or a free curve; to obtain more collimated light beams, the cross-sectional area of the second cavity opening 112 is larger than the cross-sectional area of the first cavity opening 111, that is, the diameter of the second cavity opening 112 is larger than the diameter of the first cavity opening 111, and the connection between the first cavity opening 111 and the second cavity opening 112 is parallel to the extension direction of the collimated light beam.
[0033] Reference Figure 1 and Figure 2In one embodiment, the light-emitting component 500 has a light-emitting surface, the diameter of the light-emitting surface of the light-emitting component 500 is a first diameter, the diameter of the first cavity opening 111 of the reflective cavity 110 is a second diameter, the light-emitting surface of the light-emitting component 500 is coaxial with the first cavity opening 111 of the reflective cavity 110, and the second diameter is greater than or equal to the first diameter.
[0034] In this embodiment, the reflective cup 100 can capture more illumination beams by adopting the above design; in addition, in order to capture more illumination beams, the light-emitting surface of the light-emitting element 500 is in contact with the surface of the reflective cup 100 where the first cavity 111 is provided.
[0035] Reference Figure 1 and Figure 2 In one embodiment, the diameter of the second cavity opening 112 of the reflective cavity 110 is the third diameter, the distance between the first cavity opening 111 of the reflective cavity 110 and the second cavity opening 112 of the reflective cavity 110 is the first distance, and the ratio of the first distance to the third diameter ranges from 0.5 to 1.1.
[0036] In a specific embodiment, the light emitting element 500 is a monochromatic light source, the first diameter is 4mm, the third diameter is 48mm, and the first spacing ranges from 25mm to 52.5mm; the spacing between the second cavity 112 and the electronic atomization sheet 200 is 34mm, the electronic atomization sheet 200 completely covers the second cavity 112, and the refractive index of the electronic atomization sheet 200 is 1.586; the preset voltage is an AC voltage, the frequency of the preset voltage is 50HZ, and the preset voltage ranges from 3v to 21v. It can be seen from the experiment that the beam angle range of the emitted light beam obtained by the lighting device composed of the above parameters is 12°-60°.
[0037] Reference Figure 1 and Figure 2 In one embodiment, the light emitting element 500 is a multi-color light source, and the lighting device further includes a light homogenizer, which is disposed between the reflective cup 100 and the electronic atomization sheet 200 for uniformly mixing the collimated light beam.
[0038] In this embodiment, when the light emitting element 500 is a multicolor light source, the light homogenizer can make the light spot of the collimated light beam uniformly mixed, thereby meeting the corresponding fill light requirements. To ensure the uniform effect, the light homogenizer is a compound eye light homogenizer. In addition, to simplify the lighting device, when the light emitting element 500 is a monochromatic temperature light source, there is no need to set a light homogenizer.
[0039] Reference Figure 1 , Figure 2 as well as Figure 4In one embodiment, the light homogenizer is a compound eye light homogenizer 400, which has a plane 410 and a convex surface 420 opposite to the plane 410, and the convex surface 420 of the compound eye light homogenizer 400 is located on the side of the plane 410 of the compound eye light homogenizer 400 close to the electronic atomization sheet 200, and a plurality of cross-distributed lens units are arranged on the convex surface 420 of the compound eye light homogenizer 400. By using the above compound eye light homogenizer 400, the light spot of the collimated light beam can be mixed evenly, thereby meeting the corresponding fill light requirements.
[0040] Reference Figure 1 , Figure 2 as well as Figure 4 In one embodiment, the reflective cup 100 has a reflective cavity 110 for reflecting the illumination light beam into a collimated light beam, and the reflective cavity 110 has a second cavity opening 112 for the collimated light beam to be emitted outward; the diameter of the second cavity opening 112 of the reflective cavity 110 is the third diameter; the spacing between the second cavity opening 112 of the reflective cavity 110 and the plane 410 of the compound eye homogenizer 400 is the second spacing, and the ratio of the second spacing to the third diameter is in the range of 0.5-2.
[0041] In a specific embodiment, the light emitting element 500 is a six-color light source, the first diameter is 4 mm, and the third diameter is 48 mm; the reflective cavity 110 also has a first cavity opening 111 for the illumination light beam to enter the reflective cavity 110, and the spacing between the first cavity opening 111 of the reflective cavity 110 and the second cavity opening 112 of the reflective cavity 110 is a first spacing, and the range of the first spacing is 25 mm to 52.5 mm; the second spacing is 30 mm; the thickness of the compound eye homogenizer 400 is the third spacing, and the third spacing is 2 mm; the diameter of the lens unit is the fourth diameter, and the fourth diameter is 3.5 mm; the spacing between two adjacent lens units is the fourth spacing, and the fourth spacing is 2.4mm; the spacing between the convex surface 420 of the compound eye homogenizer 400 and the electronic atomizer 200 is the fifth spacing, and the fifth spacing is 2mm; the compound eye homogenizer 400 completely covers the second cavity 112, and the refractive index of the compound eye homogenizer 400 is 1.49; the electronic atomizer 200 completely covers the second cavity 112, and the refractive index of the electronic atomizer 200 is 1.586; the preset voltage is an AC voltage, the frequency of the preset voltage is 50HZ, and the range of the preset voltage is 3v to 21v. Through experiments, it can be known that the beam angle range of the emitted light beam obtained by the lighting device composed of the above parameters is 12°-60°.
[0042] Reference Figures 1 to 3 In one embodiment, the electronic atomization sheet 200 includes a support layer 240 and an adjustment layer installed on the support layer 240, the adjustment layer includes a polymer dispersed liquid crystal layer 210, and the polymer dispersed liquid crystal layer 210 is used to adjust the transparency under the action of a preset electric field.
[0043] In the present embodiment, the full name of the polymer dispersed liquid crystal layer 210 is: Polymer Dispersed Liquid Crystal, and the English abbreviation is: PDLC. The polymer dispersed liquid crystal layer 210 is a composite material composed of liquid crystal molecules and polymer particles, wherein the liquid crystal molecules are the key components of the polymer dispersed liquid crystal layer 210, and have the characteristic of changing the molecular arrangement under the action of an electric field; when not affected by a preset electric field, the liquid crystal molecules and the polymer particles are randomly arranged. In this case, the polymer dispersed liquid crystal layer 210 is in an atomized state, and the collimated light beam is scattered in the polymer dispersed liquid crystal layer 210, so that the emitted light beam is formed into a floodlight beam; when affected by a preset electric field, the liquid crystal molecules and the polymer particles are aligned. In this case, the polymer dispersed liquid crystal layer 210 is in a transparent state, and the number of scatterings of the collimated light beam in the polymer dispersed liquid crystal layer 210 is reduced, so that the emitted light beam is formed into a focused light beam; at the same time, with the increase of the preset electric field intensity, the alignment degree of the liquid crystal molecules and the polymer particles is also improved. In this case, the number of scatterings of the collimated light beam in the polymer dispersed liquid crystal layer 210 is correspondingly reduced, so that the beam angle of the emitted light beam becomes smaller. Of course, in other embodiments, the polymer dispersed liquid crystal layer 210 can also be replaced by an adjustable light scattering film or an electrochromic layer. The support layer 240 is made of PC (full name: Polycarbonate Sheets, Chinese name: polycarbonate); the support layer 240 plays a bearing role.
[0044] Reference Figure 3 In one embodiment, the adjustment layer further includes a transparent conductive layer 220, which is coated on the surface of the polymer dispersed liquid crystal layer 210 and is used to receive a voltage within a preset voltage range to form a preset electric field.
[0045] In this embodiment, the transparent conductive layer 220 is an ITO (full name: Indium Tin Oxide, Chinese name: indium tin oxide) layer, which has good transparency and conductivity. The thicker the ITO layer, the lower its resistance value and the better its conductivity, but the transmittance of the light beam will be reduced. The transparent conductive layer 220 can be coated on the surface of the polymer dispersed liquid crystal layer 210 by physical evaporation or magnetron sputtering. In order to form a stable preset electric field, the transparent conductive layer 220 is provided with two layers, and the two transparent conductive layers 220 are coated on two opposite surfaces of the polymer dispersed liquid crystal layer 210 respectively.
[0046] Reference Figure 3 In one embodiment, the adjustment layer further includes a transparent protective layer 230 , and the transparent protective layer 230 is coated on the surface of the transparent conductive layer 220 away from the polymer dispersed liquid crystal layer 210 .
[0047] In this embodiment, the transparent protective layer 230 is a PET (full name: PolyethyleneTerephthalate, Chinese name: polyethylene terephthalate) layer, the PET layer has good transparency and hardness, and the transparent protective layer 230 is provided to play a bearing and protective role. In order to protect both transparent conductive layers 220, the transparent protective layer 230 is provided with two layers, and the two transparent protective layers 230 are respectively coated on the surfaces of the two transparent conductive layers 220 away from the polymer dispersed liquid crystal layer 210; when manufacturing the electronic atomization sheet 200, firstly, a transparent protective layer 230 is coated on the support layer 240, and then a transparent conductive layer 220 is coated on the transparent protective layer 230, and then the polymer dispersed liquid crystal layer 210 is coated on the transparent conductive layer 220, and then another transparent conductive layer 220 is coated on the polymer dispersed liquid crystal layer 210, and finally another transparent protective layer 230 is coated on the other transparent conductive layer 220.
[0048] Reference Figure 1 and Figure 2 In one embodiment, the lighting device further includes a mounting bracket 300 , the mounting bracket 300 has a mounting cavity 310 , and the light-emitting element 500 and the reflective cup 100 are both mounted in the mounting cavity 310 .
[0049] In this embodiment, the mounting cavity 310 extends from the surface of the mounting bracket 300 toward the inside of the mounting bracket 300, and the reflective cup 100 is fixedly mounted in the mounting cavity 310; the mounting cavity 310 not only plays a bearing role, but also plays an isolation role, avoiding interference between the illumination beams emitted by different light-emitting components 500, thereby avoiding the generation of stray light and stray light spots. In addition, in order to ensure the uniform light effect of the collimated light beam, the mounting cavity 310 has a cavity opening, and the uniform light component completely covers the cavity opening of the mounting cavity 310. In order to ensure the adjustment effect of the beam angle of the emitted light beam, the electronic atomization sheet 200 completely covers the cavity opening of the mounting cavity 310.
[0050] Reference Figures 1 to 4 According to another aspect of the present application, an embodiment of the present application further provides a panel light, which includes a plurality of the above-mentioned lighting devices, and two adjacent lighting devices are spliced with each other.
[0051] In an embodiment of the present application, the mounting brackets 300 in adjacent lighting devices are fixedly connected to each other; the panel lights in the present application have the effect of increasing the light brightness and expanding the irradiation range; to facilitate the processing of the panel lights, multiple light-distributing sheets and multiple electronic atomization sheets 200 are all integrally formed parts.
[0052] In summary, the lighting device and lighting device provided by the present embodiment have at least the following beneficial technical effects: when the lighting device of the present application needs to make the emitted light beam in a focusing state, since the lighting light beam emitted by the light-emitting component 500 is adjusted to a collimated light beam by the reflective cup 100, its beam angle is small, and it is only necessary to increase the transparency of the electronic atomization sheet 200. At this time, the beam angle of the emitted light beam emitted through the electronic atomization sheet 200 remains small, and the emitted light beam is formed into a focusing light beam; when the emitted light beam needs to be in a floodlight state, it is only necessary to reduce the transparency of the electronic atomization sheet 200. At this time, the light beam of the emitted light beam emitted through the electronic atomization sheet 200 will become larger, and the emitted light beam is formed into a floodlight beam; the lighting device of the present application can adjust the beam angle of the emitted light beam without driving the electronic atomization sheet 200 to move, thereby reducing the structural complexity and reducing the cost and weight, which is beneficial to production and use.
[0053] The above are only preferred embodiments of the present application and are not intended to limit the present application. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present application should be included in the protection scope of the present application.
Claims
1. A lighting device, characterized in that: include: A light emitting element (500) for emitting a lighting beam; A reflective cup (100), arranged on one side of the light-emitting element (500), used for receiving the illumination light beam and adjusting the illumination light beam into a collimated light beam; The electronic atomization sheet (200) is fixed on a side of the reflective cup (100) away from the light-emitting element (500), and is used to receive the collimated light beam and adjust the collimated light beam into an emitted light beam. The transparency of the electronic atomization sheet (200) can be adjusted so that the beam angle of the emitted light beam can be adjusted.
2. The lighting device according to claim 1, characterized in that: The reflective cup (100) has a reflective cavity (110) for reflecting the illumination light beam into the collimated light beam, and the reflective cavity (110) has a first cavity opening (111) for the illumination light beam to enter the reflective cavity (110) and a second cavity opening (112) for the collimated light beam to be emitted outward.
3. The lighting device according to claim 2, characterized in that: The light-emitting component (500) has a light-emitting surface, the diameter of the light-emitting surface of the light-emitting component (500) is a first diameter, the diameter of the first cavity opening (111) of the reflective cavity (110) is a second diameter, the light-emitting surface of the light-emitting component (500) is coaxial with the first cavity opening (111) of the reflective cavity (110), and the second diameter is greater than or equal to the first diameter.
4. The lighting device according to claim 3, characterized in that: The diameter of the second cavity opening (112) of the reflective cavity (110) is a third diameter, the distance between the first cavity opening (111) of the reflective cavity (110) and the second cavity opening (112) of the reflective cavity (110) is a first distance, and the ratio of the first distance to the third diameter is in the range of 0.5-1.
1.
5. The lighting device according to claim 1, characterized in that: The light emitting element (500) is a multi-color light source, and the lighting device further comprises a light homogenizing element, which is arranged between the reflective cup (100) and the electronic atomizing sheet (200) and is used to evenly mix the collimated light beam.
6. The lighting device according to claim 5, characterized in that: The light homogenizer is a compound eye light homogenizer (400), the compound eye light homogenizer (400) having a plane (410) and a convex surface (420) opposite to the plane (410), the convex surface (420) of the compound eye light homogenizer (400) being located on a side of the plane (410) of the compound eye light homogenizer (400) close to the electronic atomization sheet (200), and a plurality of cross-distributed lens units are arranged on the convex surface (420) of the compound eye light homogenizer (400).
7. The lighting device according to claim 6, characterized in that: The reflective cup (100) has a reflective cavity (110) for reflecting the illumination light beam into the collimated light beam, and the reflective cavity (110) has a second cavity opening (112) for the collimated light beam to emit outward; the diameter of the second cavity opening (112) of the reflective cavity (110) is a third diameter; The distance between the second cavity opening (112) of the reflective cavity (110) and the plane (410) of the compound eye homogenizer (400) is a second distance, and the ratio of the second distance to the third diameter is in the range of 0.5-2.
8. The lighting device according to claim 1, characterized in that: The electronic atomization sheet (200) comprises a support layer (240) and an adjustment layer installed on the support layer (240), wherein the adjustment layer comprises: a polymer dispersed liquid crystal layer (210), wherein the polymer dispersed liquid crystal layer (210) is used to adjust transparency under the action of a preset electric field; A transparent conductive layer (220), the transparent conductive layer (220) is coated on the surface of the polymer dispersed liquid crystal layer (210), and is used to receive a voltage within a preset voltage range to form the preset electric field.
9. The lighting device according to any one of claims 1 to 8, characterized in that: The lighting device further comprises a mounting bracket (300), wherein the mounting bracket (300) has a mounting cavity (310), and the light-emitting element (500) and the reflective cup (100) are both mounted in the mounting cavity (310).
10. A panel light, characterized in that: The panel light comprises a plurality of lighting devices according to any one of claims 1 to 9, and two adjacent lighting devices are spliced with each other.