Light leakage prevention structure of area light source

Abstract

The utility model relates to the technical field of area light sources, in particular to a light leakage prevention structure of an area light source. Comprising a heat dissipation support and an auxiliary device, the auxiliary device comprises a light bar, first foam, second foam, a left frame, a right frame, a light guide plate, a diffusion plate and a reflector plate, and when the right frame and the left frame are installed with the heat dissipation support in a matched mode, the first foam and the second foam which are additionally arranged on the edges are extruded in matched gaps respectively. The corresponding corners of the light guide plate, the diffusion plate and the reflector plate are all subjected to bevel edge treatment, interference with the first foam and the second foam is avoided, light can be completely shielded through the structure, a light source is prevented from irradiating from the inside through the splicing structure, the internal shading structure is more stable and attractive, and the service life of the light guide plate, the diffusion plate and the reflector plate is prolonged. The anti-light-leakage structure is simple in structure, free of problems after long-term use, more reliable and more stable in quality, more stable anti-light-leakage treatment can be achieved when light leakage of the area light source is prevented, and long-term stable use of a user is facilitated.

Description

Technical Field

[0001] The utility model relates to the technical field of surface light sources, in particular to a light leakage prevention structure for a surface light source. Background Art

[0002] A surface light source refers to a light-emitting mode. Compared with an LED point light source and a general lighting fixture light source, existing surface light sources such as flat light sources and LED surface light sources have the characteristics of soft light emission, eye-friendly, power-saving, and natural light.

[0003] At present, light leakage often occurs in surface light sources used in containers, refrigerators, freezers, household appliances, etc. on the market. To solve the problem of light leakage, in the prior art, a light-shielding tape is directly added outside the surface light source. This solution has great potential hazards, the external tape is easy to fall off, and it is not beautiful, bringing a bad user experience to users. Summary of the Invention

[0004] The purpose of the utility model is to provide a light leakage prevention structure for a surface light source, which can achieve more stable light leakage prevention during the light leakage prevention of the surface light source, and is beneficial to the long-term and stable use of users.

[0005] To achieve the above purpose, the utility model provides a light leakage prevention structure for a surface light source, which includes a heat dissipation bracket and also includes an auxiliary device;

[0006] The auxiliary device includes a lamp strip, a first foam, a second foam, a left frame, a right frame, a light guide plate, a diffusion plate and a reflector. The lamp strip is installed in the heat dissipation bracket. The reflector is adhesively installed on the back of the light guide plate. The diffusion plate is adhesively installed on the front of the light guide plate. Three sides of the periphery of the light guide plate except the light incident side are respectively pasted with waterproof tape. The first foam is pasted on the right frame. The second foam is pasted on the left frame. The heat dissipation bracket installed with the lamp strip is installed at the light incident place formed by the installed diffusion plate, the reflector and the light guide plate. The right frame is installed on the side of the light guide plate, and the head is cooperatively installed with the heat dissipation bracket. The left frame is installed on the side of the light guide plate away from the right frame, and the head is cooperatively installed with the heat dissipation bracket;

[0007] When the right frame and the left frame are respectively cooperatively installed with the heat dissipation bracket, the extra first foam and second foam at the edges are respectively squeezed into the cooperation gaps. The corresponding corners of the light guide plate, the diffusion plate and the reflector are respectively processed with bevel edges to avoid interference with the first foam and the second foam.

[0008] Wherein, the reflector is adhered to the light guide plate using waterproof double-sided tape and is adhesively fixed on the back of the light guide plate.

[0009] Among them, the diffusion plate is attached to the light guide plate with double-sided tape and is fixedly attached to the front surface of the light guide plate.

[0010] Among them, the heat dissipation bracket is fixedly attached to the back surface of the surface light source through an aluminum foil tape.

[0011] Among them, a notch is provided on the side of the heat dissipation bracket.

[0012] In a light leakage prevention structure of a surface light source of the present utility model, slots are provided inside the openings at both ends of the heat dissipation bracket. The left frame and the head parts of the right frame are respectively installed in the slots opened in the heat dissipation bracket to achieve a fitting installation. Moreover, the heads on the inner sides of the left frame and the right frame are attached to the first foam and the second foam. When the right frame and the left frame are respectively installed in cooperation with the heat dissipation bracket, the excess first foam and second foam on the edges are respectively squeezed into the fitting gaps. The corresponding corners of the light guide plate, the diffusion plate, and the reflector are respectively chamfered to avoid interference with the first foam and the second foam. Thus, through this structure, the light can be completely blocked. Compared with the structure of directly adding a light-shielding tape outside the surface light source, the present application prevents the light source from irradiating out from the inside through a splicing structure. Using such an internal light-shielding structure is more stable, beautiful, will not have problems after long-term use, is more reliable, and the quality is also more stable. Furthermore, a more stable light leakage prevention treatment can be achieved when performing light leakage prevention for the surface light source, which is beneficial for the user to use stably for a long time. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art.

[0014] Figure 1 is an assembly schematic diagram of the light leakage prevention structure of the surface light source of the present utility model.

[0015] Figure 2 is a schematic diagram of the setting position of the chamfer of the present utility model.

[0016] Figure 3 is a schematic diagram of the structure of the heat dissipation bracket of the present utility model.

[0017] Figure 4 is of the present utility model Figure 3 is an enlarged view of part B in

[0018] Figure 5 is a schematic diagram of the structure of the left frame of the present utility model.

[0019] Figure 6 is of the present utility model Figure 5 is an enlarged view of part A in

[0020] In the figure: 101 - heat dissipation bracket, 102 - light bar, 103 - first foam, 104 - second foam, 105 - left frame, 106 - right frame, 107 - light guide plate, 108 - diffusion plate, 109 - reflector, 110 - bevel edge, 1011 - notch. Detailed implementation mode

[0021] The embodiments of the present invention will be described in detail below. The examples of the embodiments are shown in the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to explain the present invention, and should not be construed as a limitation to the present invention.

[0022] As Figures 1 to 6 shown, in which Figure 1 is an assembly schematic diagram of the surface light source light leakage prevention structure, Figure 2 is a schematic diagram of the setting position of the bevel edge 110, Figure 3 is a structural schematic diagram of the heat dissipation bracket 101, Figure 4 is Figure 3 an enlarged view of B in Figure 5 is a structural schematic diagram of the left frame 105, Figure 6 is Figure 5 an enlarged view of A in

[0023] In this embodiment, the heat dissipation bracket 101 is used for supporting when components in the structure are assembled.

[0024] Among them, the light bar 102 is installed in the heat dissipation bracket 101, the reflective sheet 109 is adhesively installed on the back of the light guide plate 107, the diffusion plate 108 is adhesively installed on the front of the light guide plate 107. Three sides of the periphery of the light guide plate 107 except the light incident side are respectively pasted with waterproof tape. The first foam 103 is pasted on the right frame 106, and the second foam 104 is pasted on the left frame 105. The heat dissipation bracket 101 with the light bar 102 installed is installed at the light incident place formed by the pasted diffusion plate 108, the reflective sheet 109 and the light guide plate 107. The right frame 106 is installed on the side of the light guide plate 107, and its head is installed in cooperation with the heat dissipation bracket 101. The left frame 105 is installed on the side of the light guide plate 107 away from the right frame 106, and its head is installed in cooperation with the heat dissipation bracket 101. During use, first assemble. Install the light bar 102 in the heat dissipation bracket 101, fix the reflective sheet 109 and the light guide plate 107 by fitting and attach it to the back of the light guide plate 107. Fix the diffusion plate 108 and the light guide plate 107 by fitting and attach it to the front of the light guide plate 107. Except for the position of the light incident side, paste the other three sides of the periphery of the light guide plate 107 with waterproof tape. Paste the first foam 103 on the right frame 106, paste the second foam 104 on the left frame 105. Install the heat dissipation bracket 101 with the light bar 102 installed at the light incident place formed by the cooperation of the pasted diffusion plate 108, the reflective sheet 109 and the light guide plate 107. Install the right frame 106 with the first foam 103 pasted on the side of the light guide plate 107, and its head is installed in cooperation with the heat dissipation bracket 101. Install the left frame 105 with the second foam 104 pasted on the other side of the light guide plate 107, and its head is also installed in cooperation with the heat dissipation bracket 101. Finally, fit and fix the heat dissipation bracket 101 and the surface light source on the back of the surface light source, fit and fix the left frame 105 and the surface light source with aluminum foil tape, and fit and fix the right frame 106 and the surface light source with aluminum foil tape to complete the installation. When the light bar 102 is powered on, it will irradiate on the light guide plate 107. The reflective sheet 109 will reflect the light upward, and the diffusion plate 108 will diffuse the light, and the surface light source emits light.

[0025] When the right frame 106 and the left frame 105 are respectively fitted and installed with the heat dissipation bracket 101, the extra first foam 103 and the second foam 104 at the edges are respectively squeezed into the fitting gaps. The corresponding corners of the light guide plate 107, the diffusion plate 108, and the reflector 109 are respectively processed with bevels 110 to avoid interference with the first foam 103 and the second foam 104. This structure can reduce the fitting gaps and prevent light leakage. The bevels 110 are provided on the module formed by assembling the light guide plate 107, the diffusion plate 108, and the reflector 109.

[0026] Secondly, the reflector 109 is attached to the light guide plate 107 using waterproof double-sided tape and is fixedly attached to the back of the light guide plate 107. This structure facilitates the quick installation of the reflector 109.

[0027] Then, the diffusion plate 108 is attached to the light guide plate 107 using double-sided tape and is fixedly attached to the front of the light guide plate 107. This structure facilitates the quick installation of the diffusion plate 108.

[0028] Furthermore, the heat dissipation bracket 101 is fixedly attached to the back of the surface light source through aluminum foil tape.

[0029] Finally, a notch 1011 is provided on the side of the heat dissipation bracket 101.

[0030] When using the present utility model to achieve more stable light leakage prevention treatment, which is beneficial for long-term and stable use by users, internal slots are provided at both ends of the heat dissipation bracket 101. The head parts of the left frame 105 and the right frame 106 are respectively installed in the slots opened in the heat dissipation bracket 101 to achieve fitting installation. And the head parts inside the left frame 105 and the right frame 106 respectively fit the first foam 103 and the second foam 104. When the right frame 106 and the left frame 105 are respectively fitted and installed with the heat dissipation bracket 101, the extra first foam 103 and the second foam 104 at the edges are respectively squeezed into the fitting gaps. The corresponding corners of the module formed by the light guide plate 107, the diffusion plate 108, and the reflector 109 are respectively processed with bevels 110 to avoid interference with the first foam 103 and the second foam 104. Thus, through this structure, the light can be completely blocked. Compared with the structure of directly adding a light-shielding tape outside the surface light source, the present application prevents the light source from irradiating out from the inside through a splicing structure. Using such an internal light-shielding structure is more stable, beautiful, will not have problems during long-term use, is more reliable, and the quality is more stable. Furthermore, more stable light leakage prevention treatment can be achieved when performing light leakage prevention for the surface light source, which is beneficial for long-term and stable use by users.

[0031] The foregoing disclosure is only one or more preferred embodiments of the present application, and cannot be used to limit the scope of rights of the present application. Those of ordinary skill in the art can understand all or part of the processes of implementing the above embodiments, and the equivalent changes made according to the claims of the present application still fall within the scope covered by the present application.

Claims

1. A light source leakage prevention structure for a surface light source, including a heat dissipation bracket, characterized in that, further comprising an auxiliary device; The auxiliary device includes a lamp strip, a first foam, a second foam, a left frame, a right frame, a light guide plate, a diffusion plate and a reflector. The lamp strip is installed in the heat dissipation bracket. The reflector is adhesively installed on the back of the light guide plate. The diffusion plate is adhesively installed on the front of the light guide plate. The three sides of the perimeter of the light guide plate except the light incident side are respectively pasted with waterproof tape. The first foam is pasted on the right frame. The second foam is pasted on the left frame. The heat dissipation bracket with the lamp strip installed is installed at the light incident position formed by the installed diffusion plate, the reflector and the light guide plate. The right frame is installed on the side of the light guide plate, and its head is installed in cooperation with the heat dissipation bracket. The left frame is installed on the side of the light guide plate away from the right frame, and its head is installed in cooperation with the heat dissipation bracket; When the right frame and the left frame are respectively installed in cooperation with the heat dissipation bracket, the extra first foam and the second foam at the edges are respectively squeezed into the fitting gaps. The corresponding corners of the light guide plate, the diffusion plate and the reflector are respectively bevelled to avoid interference with the first foam and the second foam.

2. The light source leakage prevention structure for a surface light source according to claim 1, characterized in that, The reflector is adhered to the light guide plate using waterproof double-sided tape and is adhered and fixed to the back of the light guide plate.

3. The light source leakage prevention structure for a surface light source according to claim 1, characterized in that, The diffusion plate is adhered to the light guide plate using double-sided tape and is adhered and fixed to the front of the light guide plate.

4. The light source leakage prevention structure for a surface light source according to claim 1, characterized in that, The heat dissipation bracket and the back of the surface light source are adhered and fixed through aluminum foil tape.

5. The light source leakage prevention structure for a surface light source according to claim 1, characterized in that, A notch is provided on the side of the heat dissipation bracket.

Images