Diffusion plate of side-arranged LED backlight system

Abstract

The utility model discloses a diffuser plate of a side LED backlight system, and relates to the technical field of side LED backlight systems, the diffuser plate comprises an outer frame, an installation mechanism is installed inside the outer frame, the installation mechanism comprises a fixed cavity, the fixed cavity is arranged inside the outer frame, a threaded rod is rotatably connected inside the fixed cavity, and the threaded rod is provided with a threaded hole. The second diffusion plate, the brightness enhancement film and the first diffusion plate are sequentially stacked, the threaded rod is rotated, the first push plate is driven to do linear motion, the second push plate is pushed to one side, the positioning plate moves to be inserted into the positioning groove, and the second diffusion plate, the brightness enhancement film and the first diffusion plate are sequentially stacked, the threaded rod is rotated to drive the second push plate to do linear motion. The second diffusion plate, the brightness enhancement film and the first diffusion plate are fixed, the first diffusion plate, the brightness enhancement film and the second diffusion plate can be sequentially disassembled by reversely rotating the threaded rod, and the first diffusion plate, the brightness enhancement film and the second diffusion plate can be conveniently replaced or maintained.

Description

Technical Field

[0001] This utility model relates to the technical field of side-mounted LED backlight systems, and in particular to a diffuser plate for a side-mounted LED backlight system. Background Technology

[0002] Side-lit LED backlighting systems, also known as edge-lit LED backlighting systems, are a common backlighting technology used in display devices such as LCD TVs. Diffuser plates are an important component in side-lit LED backlighting systems.

[0003] For example, CN207833186U discloses a side-lit liquid crystal module, which includes, from bottom to top, a back plate, a reflective sheet, a light guide plate, an air layer, a diffuser plate, and an optical film. An LED light strip is provided on the light-incident side of the light guide plate. A support column is provided between the back plate and the diffuser plate. The support column passes through the light guide plate, and one end of the support column is glued to the back plate, while the other end is pressed against the bottom of the diffuser plate.

[0004] In the existing technology, the assembly of the side-mounted LED backlight system is relatively complicated, and the disassembly and assembly of the diffuser plate is inconvenient. When the diffuser plate needs to be replaced due to aging or is damaged and needs to be repaired, it is not possible to quickly and conveniently replace or repair the diffuser plate, which affects the normal use of the backlight system. Utility Model Content

[0005] The purpose of this invention is to solve the problem in the prior art that the diffuser plate cannot be replaced or repaired quickly and conveniently, which affects the normal use of the backlight system, and to propose a diffuser plate for a side-mounted LED backlight system.

[0006] To achieve the above objectives, the present invention adopts the following technical solution: a diffuser plate for a side-mounted LED backlight system, comprising an outer frame, an installation mechanism installed inside the outer frame, the installation mechanism comprising a fixing cavity, the fixing cavity being opened inside the outer frame, a threaded rod being rotatably connected inside the fixing cavity, a first push plate being threadedly connected to the outside of the threaded rod, a second push plate abutting one side of the first push plate, a connecting plate being fixedly connected to one end of the second push plate, a positioning plate being fixedly connected to one side of the connecting plate, one end of the positioning plate passing through one side of the outer frame, a second diffuser plate being disposed on one side of the outer frame, a brightness enhancement sheet being installed on one side of the second diffuser plate, and a first diffuser plate being installed on one side of the brightness enhancement sheet, positioning grooves being opened on the sides of the first diffuser plate, the brightness enhancement sheet, and the second diffuser plate, the interior of the positioning grooves being inserted into the exterior of the positioning plates.

[0007] Preferably, a guide rod is fixedly connected inside the fixed cavity, and the outside of the guide rod is slidably connected to the first push plate.

[0008] Preferably, a telescopic rod is fixedly connected to the other side of the connecting plate, and one end of the telescopic rod is fixedly connected to one side of the fixed cavity.

[0009] Preferably, a telescopic spring is sleeved on the outside of the telescopic rod, and the two ends of the telescopic spring abut against one side of the fixed cavity and one side of the connecting plate, respectively.

[0010] Preferably, a positioning rod is fixedly connected to one side of the outer frame, and positioning holes are provided on one side of the first diffuser plate, the brightening film and the second diffuser plate, and the positioning holes are fitted onto the outside of the positioning rod.

[0011] Preferably, the first diffuser plate includes a protective layer, a first light diffuser layer is installed on one side of the protective layer, a second light diffuser layer is installed on one side of the first light diffuser layer, and a base layer is installed on one side of the second light diffuser layer.

[0012] Preferably, the interior of the second light diffusion layer is provided with diffusion protrusions.

[0013] Compared with the prior art, the advantages and positive effects of this utility model are as follows:

[0014] 1. In this utility model, by stacking the second diffuser plate, the brightness enhancement sheet, and the first diffuser plate in sequence, rotating the threaded rod drives the first push plate to make a linear motion, pushing the second push plate to one side, and the positioning plate moves to be inserted into the positioning groove to fix the second diffuser plate, the brightness enhancement sheet, and the first diffuser plate. Rotating the threaded rod in the opposite direction can disassemble the first diffuser plate, the brightness enhancement sheet, and the second diffuser plate in sequence, which is convenient for replacing or repairing the first diffuser plate, the brightness enhancement sheet, and the second diffuser plate.

[0015] 2. In this utility model, a base layer, a second light diffusion layer, a first light diffusion layer and a protective layer are arranged sequentially from the inside to the outside through a first diffusion plate. The base layer is made of PS material. The second light diffusion layer has multiple diffusion protrusions inside, which increase in size from the middle to both sides. The first light diffusion layer contains a light diffusion agent, which can increase the diffusion angle and improve the light transmittance. Attached Figure Description

[0016] Figure 1 A three-dimensional structural diagram of a diffuser plate for a side-mounted LED backlight system is provided for this utility model.

[0017] Figure 2 This utility model provides a disassembly diagram of the diffuser plate of a side-mounted LED backlight system.

[0018] Figure 3 This utility model provides a partial internal cross-sectional view of the diffuser plate of a side-mounted LED backlight system.

[0019] Figure 4 This utility model presents a schematic diagram of the internal connection structure of the first diffuser plate of a side-mounted LED backlight system.

[0020] Legend: 1. Outer frame; 2. Positioning rod; 3. First diffuser plate; 31. Protective layer; 32. First light diffusion layer; 33. Second light diffusion layer; 34. Diffusion protrusion; 35. Base layer; 4. Brightness enhancement sheet; 5. Positioning groove; 6. Second diffuser plate; 7. Positioning hole; 8. Mounting mechanism; 81. Fixing cavity; 82. Threaded rod; 83. First push plate; 84. Telescopic rod; 85. Telescopic spring; 86. Second push plate; 87. Connecting plate; 88. Positioning plate; 89. Guide rod. Detailed Implementation

[0021] To better understand the above-mentioned objectives, features, and advantages of this utility model, the present utility model will be further described below with reference to the accompanying drawings and embodiments. It should be noted that, unless otherwise specified, the embodiments and features described in these embodiments can be combined with each other.

[0022] Many specific details are set forth in the following description in order to provide a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Therefore, the present invention is not limited to the specific embodiments disclosed in the following specification.

[0023] Example 1: As Figure 1 - Figure 4 As shown, this utility model provides a diffuser plate for a side-mounted LED backlight system, including an outer frame 1. An installation mechanism 8 is installed inside the outer frame 1. The installation mechanism 8 includes a fixing cavity 81, which is located inside the outer frame 1. A threaded rod 82 is rotatably connected inside the fixing cavity 81. A first push plate 83 is threadedly connected to the outside of the threaded rod 82. A second push plate 86 abuts against one side of the first push plate 83. A connecting plate 87 is fixedly connected to one end of the second push plate 86. A positioning plate 88 is fixedly connected to one side of the connecting plate 87. One end of the positioning plate 88 passes through one side of the outer frame 1. A second diffuser plate 6 is disposed on one side of the outer frame 1. A brightness enhancement sheet 4 is installed on one side of the diffuser plate 6, and a first diffuser plate 3 is installed on one side of the brightness enhancement sheet 4. Positioning grooves 5 are opened on the sides of the first diffuser plate 3, the brightness enhancement sheet 4, and the second diffuser plate 6. The interior of the positioning groove 5 is inserted into the exterior of the positioning plate 88. A guide rod 89 is fixedly connected inside the fixed cavity 81. The exterior of the guide rod 89 is slidably connected to the first push plate 83. A telescopic rod 84 is fixedly connected to the other side of the connecting plate 87. One end of the telescopic rod 84 is fixedly connected to one side of the fixed cavity 81. A telescopic spring 85 is sleeved on the exterior of the telescopic rod 84. The two ends of the telescopic spring 85 abut against one side of the fixed cavity 81 and one side of the connecting plate 87, respectively.

[0024] By stacking the second diffuser plate 6, the brightness enhancement sheet 4, and the first diffuser plate 3 in sequence, rotating the threaded rod 82 causes the threaded first push plate 83 to move. The first push plate 83 slides outside the guide rod 89, fixing the first push plate 83 in a linear motion. The inclined surface of the first push plate 83 contacts the inclined surface of the second push plate 86. During the movement of the first push plate 83, the second push plate 86 is pushed to one side, the telescopic rod 84 extends, the telescopic spring 85 extends, and the connecting plate 87 and the positioning plate 88 move in sequence. The positioning plate 88 moves to be inserted into the positioning groove 5, fixing the second diffuser plate 6, the brightness enhancement sheet 4, and the first diffuser plate 3. When the threaded rod 82 is rotated in the opposite direction, the first push plate 83 is moved upward, and the first push plate 83 separates from the second push plate 86. The telescopic spring 85, which is in an extended state, drives the positioning plate 88 to move into the fixed cavity 81. The first diffuser plate 3, the brightness enhancement sheet 4, and the second diffuser plate 6 can be disassembled in sequence, making it convenient to replace or repair the first diffuser plate 3, the brightness enhancement sheet 4, and the second diffuser plate 6.

[0025] Example 2: Figure 2 and Figure 4 As shown, a positioning rod 2 is fixedly connected to one side of the outer frame 1. Positioning holes 7 are opened on one side of the first diffuser plate 3, the light enhancement sheet 4, and the second diffuser plate 6. The positioning holes 7 are fitted onto the outside of the positioning rod 2. The first diffuser plate 3 includes a protective layer 31. A first light diffusion layer 32 is installed on one side of the protective layer 31. A second light diffusion layer 33 is installed on one side of the first light diffusion layer 32. A base layer 35 is installed on one side of the second light diffusion layer 33. A diffusion protrusion 34 is provided inside the second light diffusion layer 33.

[0026] The overall effect of this embodiment is that, through the cooperation between the positioning rod 2 and the positioning hole 7, the positioning holes 7 on the second diffuser plate 6, the brightness enhancement sheet 4, and the first diffuser plate 3 are sequentially passed through one end of the positioning rod 2 to position the second diffuser plate 6, the brightness enhancement sheet 4, and the first diffuser plate 3. The first diffuser plate 3 is provided with a base layer 35, a second light diffusion layer 33, a first light diffusion layer 32, and a protective layer 31 from the inside to the outside. The base layer 35 is made of PS material. The second light diffusion layer 33 has multiple diffusion protrusions 34 inside, which increase in size from the middle to both sides. The first light diffusion layer 32 has a light diffusing agent added inside, which can increase the diffusion angle and improve the light transmittance.

[0027] The method of use and working principle of this device: The positioning holes 7 on the second diffuser plate 6, the brightness enhancement sheet 4 and the first diffuser plate 3 are passed through one end of the positioning rod 2 in sequence. The second diffuser plate 6, the brightness enhancement sheet 4 and the first diffuser plate 3 are stacked. The threaded rod 82 is rotated to drive the first push plate 83 to make linear motion, pushing the second push plate 86 to one side. The positioning plate 88 moves to the inside of the positioning groove 5 to fix the second diffuser plate 6, the brightness enhancement sheet 4 and the first diffuser plate 3. The threaded rod 82 is rotated in the opposite direction to disassemble the first diffuser plate 3, the brightness enhancement sheet 4 and the second diffuser plate 6 in sequence. The first diffuser plate 3 is provided with a base layer 35, a second light diffusion layer 33, a first light diffusion layer 32 and a protective layer 31 in sequence from the inside to the outside. The base layer 35 is made of PS material. The second light diffusion layer 33 is provided with multiple diffusion protrusions 34. The diffusion protrusions 34 increase in size from the middle to both sides. The first light diffusion layer 32 is provided with a light diffusing agent, which can increase the diffusion angle and improve the light transmittance.

[0028] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model in any other way. Any person skilled in the art may make changes or modifications to the above-disclosed technical content to create equivalent embodiments for application in other fields. However, any simple modifications, equivalent changes, and modifications made to the above embodiments based on the technical essence of the present utility model without departing from the technical solution of the present utility model shall still fall within the protection scope of the technical solution of the present utility model.

Claims

1. A diffuser plate for a side-mounted LED backlight system, comprising an outer frame (1), characterized in that: An installation mechanism (8) is installed inside the outer frame (1). The installation mechanism (8) includes a fixed cavity (81) which is located inside the outer frame (1). A threaded rod (82) is rotatably connected inside the fixed cavity (81). A first push plate (83) is threadedly connected to the outside of the threaded rod (82). A second push plate (86) abuts against one side of the first push plate (83). A connecting plate (87) is fixedly connected to one end of the second push plate (86). A positioning plate (88) is fixedly connected to one side of the outer frame (1). One end of the positioning plate (88) passes through one side of the outer frame (1). A second diffuser plate (6) is provided on one side of the outer frame (1). A brightness enhancement sheet (4) is installed on one side of the second diffuser plate (6). A first diffuser plate (3) is installed on one side of the brightness enhancement sheet (4). Positioning grooves (5) are opened on the sides of the first diffuser plate (3), the brightness enhancement sheet (4), and the second diffuser plate (6). The inside of the positioning groove (5) is inserted into the outside of the positioning plate (88).

2. The diffuser plate of a side-mounted LED backlight system according to claim 1, characterized in that: A guide rod (89) is fixedly connected inside the fixed cavity (81), and the outside of the guide rod (89) is slidably connected to the first push plate (83).

3. The diffuser plate of a side-mounted LED backlight system according to claim 1, characterized in that: A telescopic rod (84) is fixedly connected to the other side of the connecting plate (87), and one end of the telescopic rod (84) is fixedly connected to one side of the fixed cavity (81).

4. The diffuser plate of a side-mounted LED backlight system according to claim 3, characterized in that: The telescopic rod (84) is fitted with a telescopic spring (85), and the two ends of the telescopic spring (85) abut against one side of the fixed cavity (81) and one side of the connecting plate (87), respectively.

5. The diffuser plate of a side-mounted LED backlight system according to claim 1, characterized in that: A positioning rod (2) is fixedly connected to one side of the outer frame (1). A positioning hole (7) is provided on one side of the first diffuser plate (3), the light enhancement plate (4), and the second diffuser plate (6). The positioning hole (7) is sleeved on the outside of the positioning rod (2).

6. The diffuser plate of a side-mounted LED backlight system according to claim 1, characterized in that: The first diffuser plate (3) includes a protective layer (31), a first light diffusion layer (32) is installed on one side of the protective layer (31), a second light diffusion layer (33) is installed on one side of the first light diffusion layer (32), and a base layer (35) is installed on one side of the second light diffusion layer (33).

7. The diffuser plate of a side-mounted LED backlight system according to claim 6, characterized in that: The second light diffusion layer (33) has diffusion protrusions (34) inside.

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