Light supplementing lamp structure
Patent Information
- Application Number
- CN202522587768.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-12-05
- Publication Date
- 2026-09-25
- Estimated Expiration
- 2035-12-05
AI Technical Summary
[0005]本实用新型的主要目的是提出一种补光灯结构，旨在改善现有技术中补光灯结构出光均匀性差且亮度低的技术问题
[0016]上述方案中，补光灯结构包括后壳、透明灯罩和出光组件，透明灯罩安装于后壳，透明灯罩与后壳配合以形成内腔，出光组件设置于内腔，出光组件包括PCB灯板、反光支架、匀光膜和增光膜，PCB灯板上设置有多个LED，反光支架上开设有多个安装槽，LED对应安装于安装槽，匀光膜设置于LED的出光侧，增光膜设置于匀光膜的出光侧。具体地，先将PCB灯板上的多个LED对应嵌入反光支架的安装槽中完成定位，再依次在LED出光侧铺设匀光膜、在匀光膜出光侧铺设增光膜组成出光组件，随后将出光组件放入后壳，最后将透明灯罩安装于后壳，二者配合形成容纳出光组件的内腔，完成整体装配。LED发出的光线照射至匀光膜，在这个过程中反光支架将LED发出的向后散射的光线反射回去，提高光利用率，然后经过匀光膜时，匀光膜打散光线，隐藏LED点状光源，实现初步的均匀化，为增光膜提供均匀的光学基底，然后光线继续照射至增光膜，增光膜极大提升正视角亮度，最后光线透过透明灯罩向外输出补光光线。本实用新型通过匀光膜与增光膜的组合设置可优化补光光线的均匀性与有效性；透明灯罩与后壳形成的内腔能有效保护内部组件，整体结构简洁合理，可稳定实现补光功能。
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Figure CN224801509U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the technical field of fill light structure, and in particular to a fill light structure. Background Technology
[0002] Fill lights are lighting devices used in photography, videography, live streaming, and other scenarios to supplement light and improve shooting effects. In the current market, especially for mid-to-low-end products, the classic "LED-lampshade" structure is commonly used. This structure typically involves stacking the circuit board, LEDs, and lampshade in sequence. Specifically, the LEDs are soldered onto the PCB, and the outside is covered by a lampshade made of plastic containing tiny scattering particles.
[0003] However, this basic structure has obvious performance bottlenecks. Its light uniformity effect depends entirely on the scattering ability of the lamp cover. In order to achieve basic uniformity, it is often necessary to increase the distance between the lamp cover and the lamp beads or use a high-haze lamp cover, which will cause the overall lamp to become thicker or the brightness to drop sharply.
[0004] Therefore, it is necessary to provide a new supplementary lighting structure to solve the above-mentioned technical problems. Utility Model Content
[0005] The main purpose of this utility model is to propose a supplementary lighting structure, which aims to improve the technical problems of poor light uniformity and low brightness in the existing supplementary lighting structures.
[0006] To achieve the above objectives, this utility model provides a supplementary lighting structure, comprising: Back cover; A transparent lampshade is mounted on the rear housing, and the transparent lampshade and the rear housing cooperate to form an inner cavity; A light-emitting component is disposed in the inner cavity. The light-emitting component includes a PCB lamp board, a reflector bracket, a light-diffusing film, and a light-enhancing film. Multiple LEDs are disposed on the PCB lamp board. Multiple mounting slots are provided on the reflector bracket. The LEDs are installed in the mounting slots. The light-diffusing film is disposed on the light-emitting side of the LEDs. The light-enhancing film is disposed on the light-emitting side of the light-diffusing film.
[0007] In one embodiment, the brightness enhancement film is a prism film, and the prism surface of the prism film is disposed facing the light uniform film.
[0008] In one embodiment, the prism apex angle of the prism film ranges from 45° to 110°.
[0009] In one embodiment, the light-diffusing film is attached to the top surface of the reflective bracket, and the transparent lampshade is attached to the light-enhancing film to press and fix the light-diffusing film and the light-enhancing film.
[0010] In one embodiment, the reflective bracket is a white, high-reflectivity component, and the reflective bracket and the plurality of LEDs surround a light mixing cavity.
[0011] In one embodiment, the height of the light mixing cavity is 8 mm to 15 mm.
[0012] In one embodiment, the surface of the PCB light board is coated with a white coating to cover the area outside of the plurality of LEDs.
[0013] In one embodiment, a retaining ring is formed on the outer periphery of the reflective bracket, and a corresponding retaining groove is formed on the rear shell, with the retaining ring engaging with the retaining groove.
[0014] In one embodiment, the inner surface edge of the transparent lampshade is provided with an annular protrusion, which is used to press the edge of the brightness enhancement film. The inner wall of the back shell is provided with a plurality of support ribs, which extend along the height direction of the back shell. The top of the support ribs contacts the bottom of the PCB lamp board.
[0015] In one embodiment, a plurality of LEDs are arranged in a circular pattern around the center of the PCB light board.
[0016] In the above solution, the supplementary lighting structure includes a back shell, a transparent lampshade, and a light-emitting component. The transparent lampshade is installed on the back shell, and the transparent lampshade and the back shell cooperate to form an inner cavity. The light-emitting component is set in the inner cavity and includes a PCB board, a reflector bracket, a light-diffusing film, and a light-enhancing film. Multiple LEDs are set on the PCB board, and multiple mounting slots are opened on the reflector bracket. The LEDs are installed in the mounting slots accordingly. The light-diffusing film is set on the light-emitting side of the LEDs, and the light-enhancing film is set on the light-emitting side of the light-diffusing film. Specifically, the multiple LEDs on the PCB board are first embedded into the mounting slots of the reflector bracket to complete the positioning. Then, the light-diffusing film is laid on the light-emitting side of the LEDs, and the light-enhancing film is laid on the light-emitting side of the light-diffusing film to form the light-emitting component. Then, the light-emitting component is placed in the back shell, and finally, the transparent lampshade is installed on the back shell. The two cooperate to form an inner cavity to accommodate the light-emitting component, completing the overall assembly. The light emitted by the LED shines onto the light-diffusing film. During this process, the reflective bracket reflects the backscattered light emitted by the LED back, improving light utilization. Then, as the light passes through the light-diffusing film, it disperses the light, concealing the LED's point light source and achieving initial homogenization. This provides a uniform optical substrate for the brightness enhancement film. The light then continues to shine onto the brightness enhancement film, which greatly enhances the brightness at the front viewing angle. Finally, the light passes through the transparent lampshade and outputs supplementary lighting. This invention optimizes the uniformity and effectiveness of the supplementary lighting through the combination of the light-diffusing film and the brightness enhancement film. The inner cavity formed by the transparent lampshade and the back shell effectively protects the internal components. The overall structure is simple and reasonable, and can stably achieve the supplementary lighting function. Attached Figure Description
[0017] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.
[0018] Figure 1 A cross-sectional view of an embodiment of the supplementary lighting structure provided by this utility model; Figure 2 for Figure 1 Enlarged view at point A; Figure 3 An installation diagram of an embodiment of the rear shell, PCB light board and reflector bracket provided by this utility model; Figure 4 This is a schematic diagram of the structure of an embodiment of the brightness enhancement film provided by this utility model.
[0019] Explanation of icon numbers: 100. Fill light structure; 1. Back cover; 11. Support rib; 2. Transparent lampshade; 21. Annular protrusion; 3. Light-emitting component; 31. PCB lamp board; 311. LED; 32. Reflector bracket; 321. Mounting slot; 322. Light mixing cavity; 33. Light-diffusing film; 34. Light-enhancing film; 51. Snap ring; 52. Snap slot.
[0020] The realization of the purpose, functional features and advantages of this utility model will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation
[0021] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present utility model.
[0022] It should be noted that if the embodiments of this utility model involve directional indicators (such as up, down, left, right, front, back, etc.), the directional indicators are only used to explain the relative positional relationship and movement of the components in a specific posture. If the specific posture changes, the directional indicators will also change accordingly.
[0023] Furthermore, if the embodiments of this utility model involve descriptions such as "first" or "second," these descriptions are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, the use of "and / or" or "and / or" throughout the text includes three parallel solutions. For example, "A and / or B" includes solution A, solution B, or a solution where both A and B are satisfied simultaneously. Furthermore, the technical solutions of the various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or impossible to implement, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection claimed by this utility model.
[0024] To achieve the above objectives, please refer to Figures 1 to 3This utility model proposes a supplementary lighting structure 100, including a back shell 1, a transparent lampshade 2, and a light-emitting component 3. The transparent lampshade 2 is installed on the back shell 1, and the transparent lampshade 2 and the back shell 1 cooperate to form an inner cavity. The light-emitting component 3 is disposed in the inner cavity. The light-emitting component 3 includes a PCB lamp board 31, a reflector bracket 32, a light-diffusing film 33, and a light-enhancing film 34. A plurality of LEDs 311 are disposed on the PCB lamp board 31. A plurality of mounting slots 321 are opened on the reflector bracket 32. The LEDs 311 are correspondingly installed in the mounting slots 321. The light-diffusing film 33 is disposed on the light-emitting side of the LEDs 311, and the light-enhancing film 34 is disposed on the light-emitting side of the light-diffusing film 33. Specifically, multiple LEDs 311 on the PCB light board 31 are first positioned by embedding them into the mounting slots 321 of the reflector bracket 32. Then, a light-diffusing film 33 is laid on the light-emitting side of the LEDs 311, and a light-enhancing film 34 is laid on the light-emitting side of the light-diffusing film 33 to form a light-emitting assembly 3. The light-emitting assembly 3 is then placed into the back shell 1, and finally, a transparent lampshade 2 is installed on the back shell 1. The two work together to form an inner cavity to accommodate the light-emitting assembly 3, completing the overall assembly. The light emitted by the LEDs 311 illuminates the light-diffusing film 33. During this process, the reflector bracket 32 reflects the backscattered light emitted by the LEDs 311 back, improving light utilization. Then, when the light passes through the light-diffusing film 33, the light-diffusing film 33 disperses the light, hides the point light source of the LEDs 311, and achieves preliminary homogenization, providing a uniform optical substrate for the light-enhancing film 34. The core principle of the light-diffusing film 33 in dispersing light is to use the synergistic effect of optical structure and material properties to refract, reflect, and scatter the incident light multiple times, breaking the original concentrated propagation path and achieving uniform distribution. The light-diffusing film 33 typically uses an optical-grade transparent substrate, such as PET or PC, as a carrier. Micron-sized diffusing particles, such as silica or acrylic resin microspheres, are added internally, or microstructures like microlens / microprism arrays are pressed onto the surface. When the concentrated point light emitted by the LED 311 enters the light-diffusing film 33, the internal diffusing particles cause irregular refraction and reflection of the light, while the surface microstructures decompose the single-direction beam into multi-angle divergent light by changing the direction of light deflection. These light rays, after undergoing multiple optical processes, superimpose and mix, ultimately outputting a uniform and soft surface light source, effectively eliminating the point-like light spots and local brightness differences of the LED 311. The light then continues to illuminate the brightness enhancement film 34, which greatly enhances the brightness at the viewing angle. Finally, the light passes through the transparent lampshade 2 and outputs supplementary light outwards. This invention optimizes the uniformity and effectiveness of the supplementary light through the combination of the light-diffusing film 33 and the brightness enhancement film 34. The inner cavity formed by the transparent lampshade 2 and the back cover 1 effectively protects the internal components. The overall structure is simple and reasonable, and can stably achieve the supplementary lighting function.
[0025] Please see Figure 4In one embodiment, the brightness enhancement film 34 is a prism film, with the prism surface of the prism film facing the light uniform film 33. The light emitted by the LED 311 on the PCB light board 31 is first evenly dispersed by the light uniform film 33 to eliminate point light spots and glare; then the light is incident on the prism film with the prism surface facing the light uniform film 33. The prism film, through its microprism structure, refracts and adjusts the divergent light transmitted from the light uniform film 33 to a light output direction close to the front, especially the light scattered at a large angle. Finally, the light is output as supplementary light through the transparent lampshade 2. The light enters the prism structure and, due to the refractive characteristics of the prism, is deflected towards the bottom edge of the prism. If the incident angle of the light on the other side of the prism is greater than the critical angle, total internal reflection will occur. The reflected light is refracted again by the prism, and the final direction is adjusted to a view close to the front. In practical applications, the brightness enhancement film 34 is often arranged in two layers, one responsible for the horizontal direction and the other for the vertical direction, covering all divergence dimensions and converging all the ineffective light that was originally scattered to the sides and up and down into the front supplementary light area. The prism face facing the light-diffusing film 33 maximizes the collection of scattered light output from the light-diffusing film 33, reduces ineffective light dispersion to the sides, and significantly improves the light intensity and light efficiency utilization of the front of the fill light. At the same time, the combination of the light-diffusing film 33 and the prism film not only preserves the uniformity of light, but also enhances the concentration of front fill light, making the light in the fill light area bright and evenly distributed, effectively meeting the high requirements of fill light effect in live streaming, photography and other scenarios.
[0026] Please see Figure 4In one embodiment, the prism apex angle of the prism film ranges from 45° to 110°. The microprism structure on the surface of the brightness enhancement film 34 is essentially a series of miniature light deflectors. Its working principle is mainly based on total internal reflection and refraction. When light is incident on the prism's inclined surface at a large angle, total internal reflection occurs, and the light is refracted back to the forward direction; while light rays that are nearly perpendicular pass directly through. The angle of the prism apex angle directly determines the critical angle for total internal reflection. For maximum frontal brightness, a small-angle prism is chosen; for a wide viewing angle and good uniformity, a large-angle prism is chosen. The prism apex angle of the prism film ranges from 45° to 110°. This angle range can effectively converge the large-angle scattered light transmitted by the uniform light film 33 to the front light-filling direction through a reasonable refraction angle, significantly improving the core brightness and light efficiency of the light-filling area and avoiding ineffective divergence of light in non-target directions. Secondly, this range avoids the excessive convergence of light caused by too small an apex angle, resulting in local light spots or glare, while also preventing the waste of light efficiency caused by too large an apex angle. It balances the concentration and uniformity of light, adapting to the common usage distance of fill lights from 0.5 meters to 2 meters. It provides soft and uniform fill light when taking selfies at close range and maintains sufficient front light intensity when live streaming or still life shooting at long distances. In addition, the apex angle range of 45° to 110° has moderate processing difficulty, taking into account both optical performance and production feasibility. This helps to control manufacturing costs and ensure product consistency during mass production, improving the stability of the overall fill light effect and user experience.
[0027] Please see Figure 1 and Figure 2 In one embodiment, the light-diffusing film 33 is attached to the top surface of the reflector bracket 32, and the transparent lampshade 2 is attached to the light-enhancing film 34 to press and fix the light-diffusing film 33 and the light-enhancing film 34. In this embodiment, the light-diffusing film 33 and the light-enhancing film 34 are fixedly installed through the cooperation of the reflective bracket 32 and the transparent lampshade 2, achieving precise positioning and no loosening or displacement. This ensures that the light transmission path remains stable, avoiding problems such as decreased light uniformity or glare caused by film displacement, and continuously outputting a uniform and soft supplementary lighting effect, which is suitable for the stable supplementary lighting needs of live streaming, photography and other scenarios. Secondly, the adhesive fixing does not require additional screws or adhesives, simplifying the assembly process, reducing production and manufacturing costs and time, and reducing light efficiency loss caused by fixing parts blocking light. Furthermore, the tight-fitting structure eliminates gaps between the films, effectively reducing light scattering and leakage between film layers, and improving the concentration and light efficiency of the supplementary light. Finally, the design without additional fixing parts facilitates quick disassembly and replacement of the films during later maintenance, reducing user maintenance costs and operational difficulties. The overall structure is compact and efficient, balancing performance stability and ease of use.
[0028] Please see Figure 1In one embodiment, the reflector bracket 32 is a white, high-reflectivity component, and the reflector bracket 32 and multiple LEDs 311 are arranged to form a light mixing cavity. The light emitted by the multiple LEDs 311 on the PCB light board 31 first enters the light mixing cavity formed by the white, high-reflectivity reflector bracket 32 and the LEDs 311. The light undergoes multiple reflections and uniform mixing within the cavity due to the high reflectivity of the reflector bracket 32, eliminating the dot-shaped light spots and color temperature differences of individual LEDs 311. The mixed light is then processed sequentially through the light-diffusing film 33 and the light-enhancing film 34, and finally outputs supplementary light through the transparent lampshade 2. The white, high-reflectivity reflective bracket 32 maximizes the reflection of light within the cavity, reducing light loss and significantly improving fill light efficiency. The design of the mixing cavity allows the light from multiple LEDs 311 to be fully integrated, effectively avoiding the glare and uneven brightness caused by direct light from a single LED 311, resulting in uniform output fill light with consistent color temperature. The overall structure further optimizes the softness and consistency of the fill light through reflection and mixing in the mixing cavity, adapting to the needs of natural and uniform fill light in scenarios such as live streaming and selfies, and improving the user's visual experience and comfort.
[0029] Please see Figure 1 In one embodiment, the height of the light mixing cavity is 8 mm to 15 mm. This height range provides ample space for light reflection and mixing, allowing the light emitted by multiple LED311s to fully blend after multiple reflections within the cavity by the white high-reflectivity bracket. This effectively eliminates the spot-like light and color temperature differences of individual LED311s, outputting uniform, soft, and consistent color temperature fill light, suitable for the natural fill light needs of live streaming, selfies, and other scenarios. Secondly, this height balances the light mixing effect and light efficiency, avoiding insufficient light mixing and light dispersion caused by excessively low heights, while also preventing excessively long light reflection paths and increased energy loss caused by excessively high heights, significantly improving fill light efficiency. Furthermore, the 8mm to 15mm height meets the portability requirements of common fill lights, allowing the product to maintain a compact and lightweight overall form, making it convenient for users to hold, place on a table, or install on a stand, and compatible with common fill light distances from 0.5 meters to 2 meters. In addition, this height range has good compatibility with existing LED311 layouts and reflector bracket 32 molds, with moderate processing difficulty, facilitating mass production and controlling manufacturing costs, while ensuring product consistency and improving the stability of the user experience.
[0030] In one embodiment, the surface of the PCB light board 31 is coated with a white coating to cover the area outside the multiple LEDs 311. The high reflectivity of the white coating can effectively reflect the light emitted by the LEDs 311 to the non-light-emitting areas of the PCB back to the mixing cavity, avoiding energy loss caused by the absorption of light by the dark PCB substrate, and significantly improving the utilization rate of the supplementary light. Secondly, the light reflected back to the mixing cavity can participate in secondary mixing, further merging with the light directly emitted by the LEDs 311, enhancing the uniformity of the overall light, eliminating the dot-like light spots and color temperature deviation of individual LEDs 311, making the output supplementary light softer and more natural, and adapting to the need for uniform supplementary light in scenarios such as live streaming and selfies. Furthermore, the white coating supplements the reflective surface of the mixing cavity, forming a synergistic effect with the white high-reflectivity reflective bracket 32, strengthening the overall reflection effect of the mixing cavity, and optimizing the light mixing path. In addition, the white coating can also protect the surface of the PCB substrate, reduce dust adhesion and oxidation corrosion, improve the durability of the light board, and make the PCB appearance cleaner and more uniform, taking into account both optical performance and structural reliability.
[0031] Please see Figure 2 In one embodiment, a retaining ring 51 is formed on the outer periphery of the reflector bracket 32, and a corresponding retaining groove 52 is formed on the rear shell 1, with the retaining ring 51 engaging with the retaining groove 52. During installation, a secure connection can be achieved simply by engaging the retaining ring 51 on the outer periphery of the reflector bracket 32 into the retaining groove 52 of the rear shell 1; no additional tools such as screwdrivers are required, allowing users to easily install and disassemble, greatly improving operational convenience.
[0032] Please see Figure 1 and Figure 2In one embodiment, the inner surface edge of the transparent lampshade 2 is provided with an annular protrusion 21, which is used to press the edge of the brightness enhancement film 34. The inner wall of the rear shell 1 is provided with multiple support ribs 11, which extend along the height direction of the rear shell 1. The top of the support ribs 11 contacts the bottom of the PCB lamp board 31. The annular protrusion 21 presses the edge of the brightness enhancement film 34, which can effectively fix the position of the brightness enhancement film 34 and prevent it from shifting, wrinkling or loosening due to vibration or external force during use. This ensures that the brightness enhancement film 34 always remains flat and can stably perform its light enhancement and homogenization functions, improving the uniformity and brightness stability of the supplementary light. At the same time, pressing the edge can reduce the entry of external dust and moisture into the gap between the brightness enhancement film 34 and the lampshade, keeping the optical components clean and extending their service life. The supporting ribs 11 on the inner wall of the rear shell 1 extend along the height direction and support the bottom of the PCB light board 31. On the one hand, they can stably support the PCB light board 31, preventing its deformation and displacement, and ensuring the arrangement accuracy and light emission consistency of the LED 311 array. On the other hand, the supporting ribs 11 increase the contact area between the PCB light board 31 and the rear shell 1, which facilitates the conduction of heat generated during PCB operation to the rear shell 1 for dissipation, improving heat dissipation efficiency, delaying LED 311 light decay, and extending the overall lifespan of the fill light. In addition, the structural design of the supporting ribs 11 reduces the amount of material used in the rear shell 1 while ensuring support strength, achieving a balance between lightweighting and cost control. The synergistic effect of both enhances the uniformity and stability of the fill light beam, and improves the reliability and durability of the product structure, making it suitable for long-term use in scenarios such as live streaming and selfies.
[0033] Please see Figure 3 In one embodiment, a plurality of LEDs 311 are arranged in a circular pattern around the center of the PCB light board 31. The symmetrical circular layout allows the light emitted by the LED311 to form a uniform radial distribution within the mixing cavity. The reflection paths of light from all directions to the inner wall of the mixing cavity are more consistent, effectively promoting full mixing of light and eliminating the point-like light spots and local brightness differences of individual LED311s. The output of supplementary light is softer and more uniform, suitable for the need for all-round uniform supplementary lighting for faces in scenarios such as live streaming and selfies. Secondly, the circumferential distribution allows the heat of the LED311 to be dispersed in a ring on the PCB light board 31, avoiding local overheating. Combined with the heat dissipation conduction of the support rib 11 of the back shell 1, the overall heat dissipation efficiency is significantly improved, delaying the light decay of the LED311 and extending the life of the supplementary light. In addition, the open layout in the center provides more space for the PCB light board 31, which can flexibly integrate core components such as control circuits and batteries, optimizing the compactness of the internal structure. At the same time, the symmetrical light distribution makes the supplementary lighting range more balanced, so that users can get a stable and consistent supplementary lighting effect when using it from different angles, improving the consistency and professionalism of the user experience.
[0034] The above are merely exemplary embodiments of this utility model and do not limit the scope of protection of this utility model. Any equivalent structural transformations made based on the technical concept of this utility model and the contents of this utility model specification and drawings, or direct / indirect applications in other related technical fields, are included within the scope of protection of this utility model.
Claims
1. A supplementary lighting structure, characterized in that, include: Back cover; A transparent lampshade is mounted on the rear housing, and the transparent lampshade and the rear housing cooperate to form an inner cavity; A light-emitting component is disposed in the inner cavity. The light-emitting component includes a PCB lamp board, a reflector bracket, a light-diffusing film, and a light-enhancing film. Multiple LEDs are disposed on the PCB lamp board. Multiple mounting slots are provided on the reflector bracket. The LEDs are installed in the mounting slots. The light-diffusing film is disposed on the light-emitting side of the LEDs. The light-enhancing film is disposed on the light-emitting side of the light-diffusing film.
2. The supplementary lighting structure as described in claim 1, characterized in that, The brightness enhancement film is a prism film, and the prism surface of the prism film is arranged facing the light uniform film.
3. The supplementary lighting structure as described in claim 2, characterized in that, The prism apex angle of the prism film ranges from 45° to 110°.
4. The supplementary lighting structure as described in claim 1, characterized in that, The light-diffusing film is attached to the top surface of the reflective bracket, and the transparent lampshade is attached to the light-enhancing film to press and fix the light-diffusing film and the light-enhancing film.
5. The supplementary lighting structure as described in claim 1, characterized in that, The reflective bracket is a white, high-reflectivity component, and the reflective bracket and the plurality of LEDs surround each other to form a light mixing cavity.
6. The supplementary lighting structure as described in claim 5, characterized in that, The height of the light mixing cavity is 8mm to 15mm.
7. The supplementary lighting structure as described in any one of claims 1 to 6, characterized in that, The surface of the PCB light board is coated with a white coating to cover the area outside of the multiple LEDs.
8. The supplementary lighting structure as described in any one of claims 1 to 6, characterized in that, A retaining ring is formed on the outer periphery of the reflective bracket, and a corresponding retaining groove is formed on the rear shell, with the retaining ring engaging with the retaining groove.
9. The supplementary lighting structure as described in any one of claims 1 to 6, characterized in that, The inner surface edge of the transparent lampshade is provided with an annular protrusion, which is used to press the edge of the light enhancement film. The inner wall of the back shell is provided with multiple support ribs, which extend along the height direction of the back shell. The top of the support ribs contacts the bottom of the PCB lamp board.
10. The supplementary lighting structure as described in any one of claims 1 to 6, characterized in that, The LEDs are arranged in a circular pattern around the center of the PCB light board.