Light guide plate with high luminous efficiency and uniformity
By setting convex mesh surfaces, concave grooves and reflectors on the light guide plate, combined with the combination of PCL control board and lamp beads, the problem of uneven lighting of the existing light guide plate is solved, and a high-light efficiency and uniform lighting effect is achieved.
Patent Information
- Application Number
- CN202422022149.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-08-20
- Publication Date
- 2025-05-27
- Estimated Expiration
- 2034-08-20
AI Technical Summary
The existing light guide plate reflects more often between the inlet end and the outlet end, resulting in a decrease in light intensity and uniformity.
A light guide plate with high light efficiency is designed. By setting convex mesh surfaces, concave grooves and reflective plates on the light guide plate, the number of refractions of light is reduced, and the light intensity is controlled through the combination of PCL control board and lamp beads.
The uniform distribution of light is achieved, the intensity and comfort of light is improved, the number of refractions of light is reduced, and the efficiency of light utilization is enhanced.
Smart Images
Figure CN222913907U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of light guide plates, and particularly relates to a light guide plate with high light efficiency and uniformity. Background Technique
[0002] The light guide plate uses optical-grade acrylic / PC plates, and then uses high-tech materials with extremely high refractive indices and non-light-absorbing properties to print light guide points on the bottom surface of the optical-grade acrylic plate by laser engraving, V-shaped cross-grid engraving, and UV screen printing techniques.
[0003] The working principle of the light guide plate is that the light emitted by the lamp stays on the surface of the plate. When the light hits each light guide point, the reflected light will spread in all directions, and then is emitted from the front of the light guide plate according to the reflection conditions; through various light guide points with different densities and sizes on the light guide plate, the light guide plate can emit light evenly.
[0004] At present, for some light guide plates on the market, there are more reflection times between the light incident end and the light exit end, resulting in more light loss, reducing the intensity and uniformity of the light. Content of the Utility Model
[0005] The purpose of the utility model is to provide a light guide plate with high light efficiency and uniformity, which can solve the problems put forward in the above background technique.
[0006] To achieve the above purpose, the utility model provides the following technical solution: A light guide plate with high light efficiency and uniformity, including a lamp housing, a light guide plate is arranged inside the lamp housing, the lower end of the light guide plate is the light exit end, the left and right sides of the light guide plate are the light incident ends, a convex mesh surface is arranged on the light exit end, a concave groove one is opened on the upper end surface of the convex mesh surface, a plurality of concave grooves two are opened on the light incident ends, a reflecting plate is arranged at the upper end of the light guide plate, a light shielding plate is arranged at the upper end of the reflecting plate, a diffusing plate is arranged at the lower end of the light guide plate, and mounting plates are fixedly arranged on both left and right sides inside the lamp housing, and the light guide plate, the reflecting plate, the light shielding plate, and the diffusing plate are all installed inside the mounting plates.
[0007] Preferably, a mounting shell is arranged inside the mounting plate, and a lamp strip is installed inside the mounting shell.
[0008] Preferably, a plurality of lamp beads one and lamp beads two are installed inside the lamp strip, and the lamp beads one and lamp beads two are arranged in a staggered manner.
[0009] Preferably, both the lamp beads one and lamp beads two are arranged inside the concave groove two.
[0010] Preferably, a PCL control board is installed at the top inside the lamp housing, and the PCL control board is electrically connected to the lamp beads one and lamp beads two.
[0011] Preferably, a glass light-transmitting cover is installed at the lower end of the lamp housing.
[0012] Preferably, the light guide plate is an acrylic light guide plate.
[0013] Compared with the prior art, the present utility model provides a light guide plate with high luminous efficiency and uniformity, having the following beneficial effects:
[0014] 1. In the present utility model, by providing a light guide plate, a convex mesh surface, a concave groove one, and a concave groove two, light rays are irradiated into the concave groove two from the light incident end. The concave groove two can refract as much light as possible up and down. The light rays refracted upward, together with the light rays refracted downward through the reflection of the reflector, are incident on the convex mesh surface. At this time, the concave groove one can refract the light rays again, enabling the light rays to be evenly distributed, thereby reducing the number of refractions and improving the uniformity of illumination.
[0015] 2. In the present utility model, by providing a PCL control board, a lamp bead one, and a lamp bead two, personnel can respectively control the turning on of the lamp bead one and the lamp bead two or the simultaneous turning on of the lamp bead one and the lamp bead two through the PCL control board, thereby being able to control the illumination intensity and improving the comfort of personnel use. BRIEF DESCRIPTION OF THE DRAWINGS
[0016] Figure 1 is a three-dimensional structural schematic diagram of the light guide plate of the present utility model;
[0017] Figure 2 is a sectional structural schematic diagram of the lamp housing of the present utility model;
[0018] Figure 3 is of the present utility model Figure 2 is an enlarged structural schematic diagram at A in
[0019] Figure 4 is a right-side structural schematic diagram of the lamp strip of the present utility model;
[0020] Figure 5 is a three-dimensional structural schematic diagram of the lamp housing of the present utility model.
[0021] Wherein: 1. Lamp housing; 2. Light guide plate; 3. Convex mesh surface; 4. Concave groove one; 5. Concave groove two; 6. Reflector; 7. Light-shielding plate; 8. PCL control board; 9. Diffusion plate; 10. Mounting plate; 11. Mounting shell; 12. Lamp strip; 13. Lamp bead one; 14. Lamp bead two; 15. Glass light-transmitting cover; 16. Light incident end; 17. Light exit end. DETAILED DESCRIPTION OF THE EMBODIMENTS
[0022] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.
[0023] Embodiment 1
[0024] Please refer to Figures 1-4 , in the illustration, a light guide plate with high light efficiency and uniformity includes a lamp housing 1. Inside the lamp housing 1, there is a light guide plate 2. The lower end of the light guide plate 2 is the light output end 17, and the left and right sides of the light guide plate 2 are the light input ends 16. A convex mesh surface 3 is provided on the light output end 17. A concave groove 4 is opened on the upper end surface of the convex mesh surface 3. A plurality of concave grooves 5 are opened on the light input ends 16. A reflecting plate 6 is provided at the upper end of the light guide plate 2. A light shielding plate 7 is provided at the upper end of the reflecting plate 6. A diffusion plate 9 is provided at the lower end of the light guide plate 2. Installation plates 10 are fixedly provided on both the left and right sides inside the lamp housing 1. The light guide plate 2, the reflecting plate 6, the light shielding plate 7, and the diffusion plate 9 are all installed on the inner side of the installation plate 10.
[0025] Please refer to Figure 3 , an installation shell 11 is provided on the inner side of the installation plate 10, and a lamp strip 12 is installed inside the installation shell 11.
[0026] In this embodiment: The setting of the installation plate 10 facilitates the installation of the installation shell 11, and the setting of the installation shell 11 facilitates the installation of the lamp strip 12.
[0027] Please refer to Figure 4 , a plurality of first lamp beads 13 and second lamp beads 14 are installed on the inner side of the lamp strip 12, and the first lamp beads 13 and the second lamp beads 14 are arranged in a staggered manner.
[0028] In this embodiment: The first lamp beads 13 and the second lamp beads 14 can play the role of illumination, and the power of the first lamp beads 13 is greater than the power of the second lamp beads 14.
[0029] Please refer to Figure 3 , both the first lamp beads 13 and the second lamp beads 14 are arranged inside the concave groove 5.
[0030] In this embodiment: The first lamp beads 13 and the second lamp beads 14 are arranged inside the concave groove 5, so that light can enter the inside of the light guide plate 2 through the concave groove 5.
[0031] Please refer to Figure 2 , a PCL control board 8 is installed at the top inside the lamp housing 1, and the PCL control board 8 is electrically connected to the first lamp beads 13 and the second lamp beads 14.
[0032] In this embodiment: The PCL control board 8 can control the first lamp bead 13 and the second lamp bead 14. Personnel can turn on the first lamp bead 13 and the second lamp bead 14 separately or turn on the first lamp bead 13 and the second lamp bead 14 simultaneously for illumination, and then can control the illumination intensity, improving the comfort of use.
[0033] Working principle: The light emitted by the first lamp bead 13 and the second lamp bead 14 irradiates into the second concave groove 5 from the light inlet end 16. The second concave groove 5 can refract as much light as possible up and down. The light refracted upward, together with the light refracted downward after being reflected by the reflector 6, is incident on the convex mesh surface 3. At this time, the first concave groove 4 can refract the light again, enabling the light to be evenly distributed in cooperation with the diffusion plate 9, and finally irradiating out through the glass light-transmitting cover 15, with efficient and uniform illumination. When in use, personnel can use an external controller to control the on and off of the first lamp bead 13 and the second lamp bead 14 through the PCL control board 8. By separately controlling the first lamp bead 13 and the second lamp bead 14 to turn on or turning on the first lamp bead 13 and the second lamp bead 14 simultaneously, the illumination intensity can be controlled, improving the comfort of personnel use.
[0034] Embodiment 2
[0035] Please refer to Figure 5 , this embodiment further describes Embodiment 1. In the figure, please refer to the figure, and a glass light-transmitting cover 15 is installed at the lower end of the lamp housing 1.
[0036] In this embodiment: The glass light-transmitting cover 15 can play a role in transmitting light and can also protect the components inside the lamp housing 1.
[0037] Please refer to Figure 1 , the light guide plate 2 is an acrylic light guide plate.
[0038] In this embodiment: Acrylic has high transparency and good light guide properties, which can ensure the illumination intensity and uniformity, and it has strong heat resistance, which can avoid the influence of the high temperature generated by the first lamp bead 13 and the second lamp bead 14 on its deformation and discoloration.
[0039] It should be noted that in this article, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the term "including" - "comprising" or any other variant thereof is intended to cover non-exclusive inclusion, so that a process - method - article or device including a series of elements not only includes those elements, but also includes other elements not explicitly listed, or elements inherent to such process - method - article or device.
[0040] Although embodiments of the present utility model have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principle and spirit of the present utility model. The scope of the present utility model is defined by the appended claims and their equivalents.
Claims
1. A light guide plate with high light efficiency and uniformity, comprising a lamp housing (1), characterized in that: A light guide plate (2) is arranged inside the lamp housing (1); the lower end of the light guide plate (2) is a light output end (17); the left and right sides of the light guide plate (2) are light input ends (16); a convex mesh surface (3) is arranged on the light output end (17); a concave groove one (4) is provided on the upper end surface of the convex mesh surface (3); a plurality of concave grooves two (5) are provided on the light input end (16); a reflector (6) is arranged on the upper end of the light guide plate (2); a light shielding plate (7) is arranged on the upper end of the reflector (6); a diffuser (9) is arranged on the lower end of the light guide plate (2); mounting plates (10) are fixedly arranged on the left and right sides of the lamp housing (1); the light guide plate (2), the reflector (6), the light shielding plate (7) and the diffuser (9) are all mounted on the inner side of the mounting plate (10).
2. The light guide plate with high light efficiency and uniformity according to claim 1, characterized in that: A mounting shell (11) is arranged on the inner side of the mounting plate (10), and a light bar (12) is installed inside the mounting shell (11).
3. The light guide plate with high light efficiency and uniformity according to claim 2, characterized in that: A plurality of lamp beads 1 (13) and lamp beads 2 (14) are arranged and installed on the inner side of the light bar (12), and the lamp beads 1 (13) and lamp beads 2 (14) are arranged in a staggered manner.
4. The light guide plate with high light efficiency and uniformity according to claim 3, characterized in that: The lamp bead 1 (13) and the lamp bead 2 (14) are both arranged inside the concave groove 2 (5).
5. The light guide plate with high light efficiency and uniformity according to claim 1, characterized in that: A PCL control board (8) is installed on the top of the lamp housing (1), and the PCL control board (8) is electrically connected to lamp bead 1 (13) and lamp bead 2 (14).
6. The light guide plate with high light efficiency and uniformity according to claim 1, characterized in that: A glass light-transmitting cover (15) is installed at the lower end of the lamp housing (1).
7. The light guide plate with high light efficiency and uniformity according to claim 1, characterized in that: The light guide plate (2) is an acrylic light guide plate.