WO2021142925A1

WO2021142925A1 - Led light guide plate limiting scart

Info

Publication number: WO2021142925A1
Application number: PCT/CN2020/080589
Authority: WO
Inventors: 袁昌龙
Original assignee: 赣州市牧士电子有限公司
Priority date: 2020-01-15
Filing date: 2020-03-23
Publication date: 2021-07-22
Also published as: CN211260688U

Abstract

An LED light guide plate limiting scart, comprising a plate body (1) and two frames (2) which are fixedly mounted outside the plate body (1) and are symmetrically provided. A light guide plate (14) is fixedly mounted in the plate body (1); scarts (13) are fixedly mounted above and below the light guide plate (14) and located in the plate body (1); each scart (13) is provided in a protruding manner, and the protruding positions are in contact with the light guide plate (14). The scarts (13) can retract after being subjected to expansion force of the light guide plate (14), then space is provided for expansion of the light guide plate (14), and the situation that a screen is broken and an LED lamp (22) is damaged due to thermal expansion of the light guide plate (14) can be effectively prevented.

Description

Limiting broom head for LED light guide plate

Technical field

The utility model relates to the technical field of light guide plates, in particular to an LED light guide plate limiting broom head.

Background technique

The light guide plate (light guide plate) is made of optical grade acrylic/PC sheet, and then uses high-tech materials with extremely high refractive index and non-light absorption. The bottom surface of the optical grade acrylic sheet is engraved with laser and V-shaped cross grid. UV screen printing technology prints light guide dots.

However, when the existing LED light guide plate undergoes thermal expansion, the screen will be broken and the LED lamp will be damaged, and no independent expansion space is provided.

Summary of the invention

technical problem

In view of the shortcomings of the prior art, the purpose of the present invention is to solve the phenomenon of broken screen and damage to the LED lamp when the existing LED light guide plate undergoes thermal expansion, and there is no independent expansion space.

The solution to the problem

Technical solutions

The above technical objectives are achieved through the following technical solutions. An LED light guide plate limiting broom head includes two symmetrically arranged frames fixedly installed on the outside of the plate body and the plate body, and the inside of the plate body is fixedly installed with a guide A light board, a broom head is fixedly installed on the upper and lower sides of the light guide plate and located inside the board body, the broom head is provided with a protrusion, and the protrusion position is in contact with the light guide plate.

Through the above technical solution, the broom head can retract after receiving the expansion force of the light guide plate, thereby providing space for the expansion of the light guide plate, and effectively preventing the thermal expansion of the light guide plate from breaking the screen and damaging the LED lamp.

Preferably, a brightness enhancement plate is fixedly mounted on the top of the light guide plate, and a diffuser plate is fixedly mounted on the top of the brightness enhancement plate.

Through the above technical solution, the light of the light guide plate can be increased by the light-enhancing plate, and then diffused by the diffuser plate to ensure the uniformity of the external light source.

Preferably, the reflector is connected with adhesive under the light guide plate, and the back plate is connected with the adhesive of the reflector.

Through the above technical solution, the used reflector can reflect the light source and feed back the light source to the inside of the light guide plate, thereby ensuring the irradiation work.

Preferably, a groove for placing the board is provided inside the frame.

Through the above technical solution, the board can be placed through the groove, and then the board can be fixed to ensure the progress of the lighting work.

Preferably, a plurality of uniformly distributed LED lights are fixedly installed inside the frame and located on one side of the groove, and one side of the LED lights passes through the frame and contacts the light guide plate. A heat dissipation block is fixedly installed inside the frame and located on the other side of the LED lamp.

Through the above technical solution, the LED lamp can generate light, and then act on the inside of the light guide plate, and the temperature generated by the LED lamp during operation can be checked through the heat dissipation block, thereby playing the role of protecting the LED lamp.

The beneficial effects of the invention

Beneficial effect

In summary, this utility model has the following technical effects:

In the process of using the light guide plate, it will generate heat due to light, and then expand. At the same time, during the expansion process, the light guide plate will become larger, and then act on the broom head. At the same time, the broom head can be affected by the expansion force of the light guide plate. Later, it will be retracted to provide space for the expansion of the light guide plate, and at the same time, it can effectively prevent the breakage of the light guide plate and the display of the LED lamp caused by the thermal expansion of the light guide plate, and increase the service life of the LED lamp.

Brief description of the drawings

Description of the drawings

Figure 1 is a schematic diagram of the overall structure of an LED light guide plate limiting broom head according to an embodiment;

2 is a schematic view of the internal structure of the frame of the LED light guide plate limiting broom head according to the embodiment;

3 is a schematic diagram of the internal structure of the board body of the LED light guide plate limiting broom head according to the embodiment;

Reference signs: 1. Plate body; 11. Diffusion plate; 12. Brightness enhancement plate; 13. Broom head; 14. Light guide plate; 15. Reflector plate; 16. Back plate; 2. Frame; 21. Placement frame; 22 , LED lights; 23, heat sink.

Invention embodiment

Detailed ways

Examples,

As shown in Figure 1 and Figure 3, an LED light guide plate limit broom head, including a plate body 1 and two symmetrically arranged frames 2 fixedly installed outside the plate body 1, and a light guide plate 14 is fixedly installed inside the plate body 1. A broom head 13 is fixedly installed on the top and bottom of the light guide plate 14 and located inside the plate body 1. The broom head 13 is arranged with a protrusion, and the protrusion position is in contact with the light guide plate 14, and the top of the light guide plate 14 is fixedly installed with a light-enhancing plate 12 A diffuser plate 11 is fixedly installed on the top of the light-enhancing plate 12, a reflector plate 15 is connected to the bottom of the light guide plate 14 with glue, and the back plate 16 is connected to the glue of the reflector plate 15. In the groove, a plurality of uniformly distributed LED lights 22 are fixedly installed inside the frame 2 and located on one side of the groove. One side of the LED lights 22 passes through the inside of the frame 2 and contacts the light guide plate 14. The inside of the frame 2 and A heat dissipation block 23 is fixedly installed on the other side of the LED lamp 22.

Place the board 1 inside the groove and make the LED lamp 22 in the energized state, the LED lamp 22 will produce light, and the light will act on the inside of the light guide plate 14, and then the light source is increased by the light enhancement plate 12, and further through The diffuser 11 is discharged to the outside to ensure the uniformity of illumination.

In this embodiment, during the use of the light guide plate 14, heat will be generated due to light, and then expand. At the same time, during the expansion process, the light guide plate 14 will become larger, and then act on the broom head 13, and at the same time the broom The head 13 can retract after receiving the expansion force of the light guide plate 14, thereby providing space for the expansion of the light guide plate 14, and at the same time can effectively prevent the thermal expansion of the light guide plate 14 from breaking the screen and damaging the display of the LED lamp 22 This increases the service life of the LED lamp 22.

In this embodiment, both the back plate 16 and the frame 2 are made of metal materials, which can effectively prevent the display of deformation of the light guide plate 14 and thereby increase the service life of the light guide plate 14.

In summary, when the board 1 is placed inside the groove, and the LED lamp 22 is energized, the LED lamp 22 will produce light, and the light will act on the inside of the light guide plate 14, and then the light source is performed by the light enhancement plate 12 Increase, and further discharge to the outside through the diffuser 11 to ensure the uniformity of lighting. At the same time, heat will be generated when the LED lamp 22 is working, and the heat will be discharged to the outside through the heat dissipation block 23, thereby protecting the LED lamp 22 In the process of using the light guide plate 14, heat will be generated due to the light, and then expand. At the same time, during the expansion process, the light guide plate 14 will be enlarged, and then act on the broom head 13, while the broom head 13 can be After the expansion force of the light guide plate 14, it will retract to provide space for the expansion of the light guide plate 14. At the same time, it can effectively prevent the thermal expansion of the light guide plate 14 from breaking the screen and the display of the LED lamp 22, increasing the number of LEDs. The service life of the lamp 22.

This specific embodiment is only an explanation of the utility model, and it is not a limitation to the utility model. After reading this specification, those skilled in the art can make modifications to this embodiment without creative contribution as needed, but as long as the utility model is used The scope of the new type of claims is protected by the patent law.

Claims

An LED light guide plate limiting broom head, comprising a plate body (1) and two symmetrically arranged frames (2) fixedly installed outside the plate body (1), characterized in that: the plate body (1) A light guide plate (14) is fixedly installed inside, and a broom head (13) is fixedly installed on the upper and lower sides of the light guide plate (14) and inside the board body (1), and the broom head (13) adopts protrusions. And the convex position is in contact with the light guide plate (14).
The LED light guide plate (14) limit broom head (13) according to claim 1, characterized in that: the top of the light guide plate (14) is fixedly mounted with a light enhancement plate (12), and the light enhancement plate (12) A diffuser plate (11) is fixedly installed on the top of the device.
A limit broom head (13) for an LED light guide plate (14) according to claim 1, characterized in that: a reflective plate (15) is glued under the light guide plate (14), and the reflective plate (15) ) Is connected to the backplane (16) with glue.
A limit broom head (13) for an LED light guide plate (14) according to claim 1, wherein the frame (2) is provided with a groove for placing the board (1) inside.
An LED light guide plate (14) limit broom head (13) according to claim 4, characterized in that: the inside of the frame (2) and located on one side of the groove are fixedly installed with a plurality of uniformly distributed The LED lamp (22), one side of the LED lamp (22) passes through the inside of the frame (2) and is in contact with the light guide plate (14), and the inside of the frame (2) is located in the LED lamp ( A heat sink (23) is fixedly installed on the other side of 22).