Sealing structure for light guide plate

Abstract

The utility model provides a sealing structure for a light guide plate, which comprises a light guide plate body and an aluminum alloy frame, the aluminum alloy frame is fixed on one side of the light guide plate body, a cavity is arranged inside the aluminum alloy frame, and an LED lamp strip is fixedly arranged on the inner wall of the cavity. The sealing mechanism is arranged between the light guide plate body and the aluminum alloy frame, and through the arrangement of the sealing mechanism, the interior of the cavity can be filled through the transparent supporting plate, so that the size of the cavity is reduced; the contact area between the sealing outer plate and the cavity and the contact area between the sealing outer plate and the light guide plate body can be increased through the arrangement of the sealing outer plate, the sealing inner plate, the sealing part and the sealing groove, so that dust and impurities are prevented from entering the cavity through a gap between the light guide plate body and the sealing outer plate or a gap between the aluminum alloy frame and the sealing outer plate; therefore, the sealing protection of the light guide plate body is realized, and the light guide plate body can be used in scenes with more dust and impurities.

Description

Technical Field

[0001] The utility model relates to the technical field of light guide plates, and specifically relates to a sealing structure for a light guide plate. Background Technique

[0002] A light guide plate, also known as an optical light guide plate, is an optical element used to guide and transmit light. It is usually made of a transparent material and has a special surface texture or structure that can reflect, refract, and transmit the incident light, enabling the light to be transmitted in a specific direction. Currently, the light guide plate is fixed by an aluminum alloy frame, but there will be gaps between the light guide plate and the aluminum alloy frame. In some special environments, such as when using the light guide plate in a workshop or factory, some dust and impurities will enter the interior of the aluminum alloy frame through the gaps, affecting the normal light emission of the LED light strip, thereby causing the light guide plate to be unable to be used normally. Content of the Utility Model

[0003] The purpose of the utility model is to provide a sealing structure for a light guide plate to solve the problems raised in the above background technique.

[0004] To achieve the above purpose, the utility model provides the following technical solutions:

[0005] A sealing structure for a light guide plate includes a light guide plate body and an aluminum alloy frame. The aluminum alloy frame is fixed on one side of the light guide plate body. A cavity is provided inside the aluminum alloy frame, and an LED light strip is fixedly arranged on the inner wall of the cavity. A sealing mechanism is arranged between the cavity and the light guide plate body;

[0006] The sealing mechanism includes a transparent support plate, a sealing outer plate, and a sealing inner plate. The sealing inner plate is fixedly arranged on one side of the sealing outer plate. One side of the sealing outer plate is arranged inside the cavity and fits against the inner wall of the aluminum alloy frame and the surface of the light guide plate body. The transparent support plate is fixedly arranged inside the cavity and fits against the side wall of the light guide plate body. The sealing inner plate is arranged inside the cavity and fits against the side surface of the light guide plate body and the surface of the transparent support plate.

[0007] Preferably, the light guide plate body includes an aluminum alloy bottom plate, a reflector plate, a light guide substrate, and a diffusion plate. The aluminum alloy bottom plate, the reflector plate, the light guide substrate, and the diffusion plate are arranged in sequence from bottom to top. The two sealing outer plates respectively fit against the surfaces of the diffusion plate and the aluminum alloy bottom plate, and the two sealing inner plates respectively fit against the side surfaces of the diffusion plate and the aluminum alloy bottom plate. The transparent support plate fits against the side surfaces of the light guide substrate and the diffusion plate.

[0008] Preferably, a receiving groove is provided on the surface of the transparent support plate, and a matching portion is provided on the surface of the sealing inner plate, and the matching portion is snapped into the receiving groove.

[0009] Preferably, a convex portion is fixedly provided on the surface of the sealing outer plate, a groove matching the convex portion is provided on the inner wall of the cavity, and the convex portion is engaged in the groove.

[0010] Preferably, a sealing portion is fixedly provided on the surface of the sealing outer plate, and sealing grooves matching the sealing portion are provided on the surfaces of the diffusion plate and the aluminum alloy bottom plate, and the sealing portion is engaged in the sealing grooves.

[0011] Preferably, a limiting portion is fixedly provided on the inner wall of the cavity, and a receiving cavity is formed between the two limiting portions, and one end of the transparent support plate is engaged in the receiving cavity.

[0012] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0013] A sealing mechanism is provided between the light guide plate body and the aluminum alloy frame. Through the setting of the sealing mechanism, the inside of the cavity can be filled by the transparent support plate to reduce the volume of the cavity, and through the settings of the sealing outer plate, the sealing inner plate, the sealing portion and the sealing groove, the contact area between the sealing outer plate and the cavity and the light guide plate body can be increased to reduce the entry of dust and impurities into the cavity through the gaps between the light guide plate body and the sealing outer plate or between the aluminum alloy frame and the sealing outer plate, thereby realizing the sealing protection of the light guide plate body so that the light guide plate body can be used in scenarios with more dust and impurities. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 is a schematic cross-sectional structure view of the present utility model;

[0015] Figure 2 is a schematic connection structure view of the aluminum alloy frame and the transparent support plate of the present utility model.

[0016] In the figure: 1, light guide plate body; 2, aluminum alloy frame; 3, cavity; 4, LED light strip; 5, transparent support plate; 6, sealing outer plate; 7, sealing inner plate; 8, aluminum alloy bottom plate; 9, reflecting plate; 10, light guide substrate; 11, diffusion plate; 12, receiving groove; 13, fitting portion; 14, convex portion; 15, groove; 16, sealing portion; 17, sealing groove; 18, limiting portion; 19, receiving cavity. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0017] The technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to 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 skilled in the art without creative work shall fall within the protection scope of the present utility model.

[0018] Please refer to Figure 1-2 , this utility model provides a sealing structure for a light guide plate, including a light guide plate body 1 and an aluminum alloy frame 2. The aluminum alloy frame 2 is fixed on one side of the light guide plate body 1. A cavity 3 is arranged inside the aluminum alloy frame 2. An LED light strip 4 is fixedly arranged on the inner wall of the cavity 3. A sealing mechanism is arranged between the cavity 3 and the light guide plate body 1;

[0019] The sealing mechanism includes a transparent support plate 5, a sealing outer plate 6 and a sealing inner plate 7. The sealing inner plate 7 is fixedly arranged on one side of the sealing outer plate 6. One side of the sealing outer plate 6 is arranged inside the cavity 3 and fits against the inner wall of the aluminum alloy frame 2 and the surface of the light guide plate body 1. The transparent support plate 5 is fixedly arranged inside the cavity 3 and fits against the side wall of the light guide plate body 1. The sealing inner plate 7 is arranged inside the cavity 3 and fits against the side surface of the light guide plate body 1 and the surface of the transparent support plate 5.

[0020] The light guide plate body 1 includes an aluminum alloy bottom plate 8, a reflector 9, a light guide substrate 10 and a diffusion plate 11. The aluminum alloy bottom plate 8, the reflector 9, the light guide substrate 10 and the diffusion plate 11 are arranged in sequence from bottom to top. Two sealing outer plates 6 respectively fit against the surfaces of the diffusion plate 11 and the aluminum alloy bottom plate 8. Two sealing inner plates 7 respectively fit against the side surfaces of the diffusion plate 11 and the aluminum alloy bottom plate 8. The transparent support plate 5 fits against the side surfaces of the light guide substrate 10 and the diffusion plate 11.

[0021] Please refer to Figure 1 and 2 , the transparent support plate 5 is arranged between the LED light strip 4 and the light guide substrate 10. The LED light strip 4 can pass through the transparent support plate 5 to introduce light into the light guide substrate 10, and the transparent support plate 5 can accommodate the LED light strip 4 between the cavity 3 and the transparent support plate 5 to prevent dust from entering the cavity 3 and adhering to the LED light strip 4, which affects the normal operation of the light guide substrate 10. The sealing outer plate 6 and the sealing inner plate 7 can fill the gaps between the cavity 3 and the light guide plate body 1 and the aluminum alloy frame 2, thereby improving the sealing performance between the light guide plate body 1 and the aluminum alloy frame 2.

[0022] A receiving groove 12 is arranged on the surface of the transparent support plate 5. A matching part 13 is arranged on the surface of the sealing inner plate 7 and is matched with the receiving groove 12. The matching part 13 is engaged in the receiving groove 12. A limiting part 18 is fixedly arranged on the inner wall of the cavity 3. An accommodation cavity 19 is formed between the two limiting parts 18. One end of the transparent support plate 5 is engaged in the accommodation cavity 19

[0023] Please refer to Figure 2, the provision of the accommodation groove 12 and the mating portion 13 can increase the contact area between the sealing inner plate 7 and the transparent support plate 5, so that dust and impurities are difficult to pass through between the sealing inner plate 7 and the transparent support plate 5. The provision of the limiting portion 18 and the accommodation cavity 19 can fix the transparent support plate 5, thus realizing the installation between the transparent support plate 5 and the aluminum alloy frame 2.

[0024] A convex portion 14 is fixedly provided on the surface of the sealing outer plate 6, and a groove 15 matching the convex portion 14 is provided on the inner wall of the cavity 3. The convex portion 14 is engaged in the groove 15. A sealing portion 16 is fixedly provided on the surface of the sealing outer plate 6, and a sealing groove 17 matching the sealing portion 16 is provided on the surfaces of the diffusion plate 11 and the aluminum alloy bottom plate 8. The sealing portion 16 is engaged in the sealing groove 17.

[0025] Please refer to Figure 1 and 2 , the provision of the convex portion 14 and the groove 15 can realize the connection between the sealing outer plate 6 and the aluminum alloy frame 2. The provision of the sealing portion 16 and the sealing groove 17 can increase the contact area between both sides of the sealing outer plate 6 and the aluminum alloy frame 2 and the light guide plate body 1, so that dust and impurities are difficult to enter the gap, and from Figure 1 it can be seen that the cross-section of the sealing portion 16 is set as a triangular structure, which makes it impossible for dust to move from the lower part of the sealing portion 16 to the upper part of the sealing portion 16, unless there is too much dust accumulation in the gap, resulting in dust entering the sealing groove 17 under the action of extrusion force. However, when this situation occurs, there will be a lot of dust at the connection between the light guide plate body 1 and the sealing outer plate 6, which can remind the staff to clean the dust in time. Therefore, this situation will not occur.

[0026] Structural principle: This solution prevents dust and impurities from entering the cavity 3 to interfere with the normal operation of the light guide plate body 1 by filling the gaps between the cavity 3, the aluminum alloy frame 2 and the light guide plate body 1 through the provision of the sealing outer plate 6, the sealing inner plate 7 and the transparent support plate 5. And through the provision of the accommodation groove 12, the mating portion 13, the convex portion 14, the groove 15, the sealing portion 16, the sealing groove 17, the limiting portion 18 and the accommodation cavity 19, the contact area between the sealing inner plate 7 and the transparent support plate 5, the contact area between the sealing outer plate 6 and the aluminum alloy frame 2, and the contact area between the sealing outer plate 6 and the light guide plate body 1 can be increased respectively, so as to prevent dust from entering the cavity 3.

[0027] Although the embodiments of the present invention have been shown and described, those skilled 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 invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A sealing structure for a light guide plate, comprising a light guide plate body (1) and an aluminum alloy frame (2), the aluminum alloy frame (2) being fixed to one side of the light guide plate body (1), characterized in that: The interior of the aluminum alloy frame (2) is provided with a cavity (3). The inner wall of the cavity (3) is fixedly provided with an LED light strip (4). A sealing mechanism is arranged between the cavity (3) and the light guide plate body (1). The sealing mechanism includes a transparent support plate (5), a sealing outer plate (6) and a sealing inner plate (7). The sealing inner plate (7) is fixedly arranged on one side of the sealing outer plate (6). One side of the sealing outer plate (6) is arranged inside the cavity (3) and fits against the inner wall of the aluminum alloy frame (2) and the surface of the light guide plate body (1). The transparent support plate (5) is fixedly arranged inside the cavity (3) and fits against the side wall of the light guide plate body (1). The sealing inner plate (7) is arranged inside the cavity (3) and fits against the side surface of the light guide plate body (1) and the surface of the transparent support plate (5).

2. The sealing structure for a light guide plate according to claim 1, wherein: The light guide plate body (1) includes an aluminum alloy bottom plate (8), a reflector (9), a light guide substrate (10) and a diffusion plate (11). The aluminum alloy bottom plate (8), the reflector (9), the light guide substrate (10) and the diffusion plate (11) are arranged in sequence from bottom to top. The two sealing outer plates (6) respectively fit against the surfaces of the diffusion plate (11) and the aluminum alloy bottom plate (8). The two sealing inner plates (7) respectively fit against the sides of the deficit diffusion plate (11) and the aluminum alloy bottom plate (8). The transparent support plate (5) fits against the sides of the light guide substrate (10) and the diffusion plate (11).

3. The sealing structure for a light guide plate according to claim 2, characterized in that: The surface of the transparent support plate (5) is provided with a receiving groove (12). The surface of the sealing inner plate (7) is provided with a matching portion (13) that matches the receiving groove (12). The matching portion (13) is engaged in the receiving groove (12).

4. A sealing structure for a light guide plate according to claim 3, characterized in that: The surface of the sealing outer plate (6) is fixedly provided with a protruding portion (14). The inner wall of the cavity (3) is provided with a groove (15) that matches the protruding portion (14). The protruding portion (14) is engaged in the groove (15).

5. The sealing structure for a light guide plate according to claim 4, characterized in that: The surface of the sealing outer plate (6) is fixedly provided with a sealing portion (16). The surfaces of the diffusion plate (11) and the aluminum alloy bottom plate (8) are provided with sealing grooves (17) that match the sealing portion (16). The sealing portion (16) is engaged in the sealing groove (17).

6. The sealing structure for a light guide plate according to claim 1, characterized in that: The inner wall of the cavity (3) is fixedly provided with a limiting portion (18). An accommodating cavity (19) is formed between the two limiting portions (18). One end of the transparent support plate (5) is engaged in the accommodating cavity (19).

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