Anti-blue-light front light guide plate for reflective screen

Abstract

The utility model relates to the field of reflective screens, and discloses an anti-blue-light front light guide plate for a reflective screen, which comprises a light guide plate main body, a limiting groove is arranged on the front surface of the right end of the light guide plate main body, the upper surface of the right end of the light guide plate main body is in contact with a light bar, and a dismounting component is arranged on the inner wall of the front end of the light bar. The dismounting assembly comprises a push plate, the push plate is slidably connected to the inner wall of the front end of the light bar, a clamping block is fixedly connected to the lower surface of the push plate, the rear end of the clamping block makes contact with the inner wall of the limiting groove, and OCA is fixedly connected to the lower surface of the light guide plate body. According to the utility model, the light guide plate and the lamp strip are mounted through the arranged dismounting assembly, the light guide plate and the lamp strip do not need to be fixed in an adhesive adhesion manner, the phenomenon of looseness is avoided, the stability of connection of the lamp strip is improved, in addition, during dismounting, only the push plate needs to be pushed, no substance is left on the light guide plate, and the practicability is improved.

Description

Technical Field

[0001] The utility model relates to the field of reflective screens, in particular to a blue light-proof front light guide plate for reflective screens. Background Art

[0002] E-paper is a reflective display screen. Compared with traditional LCD display screens, it does not require the assistance of backlight for display. Instead, it relies on the reflection of ambient light to enable the human eye to see the displayed content clearly. Its display texture is quite close to that of paper. However, in darker environments, it is difficult to see its displayed content. To solve this problem, it is necessary to configure it with a corresponding front light to assist in night display. The blue light brought by this may cause damage to the user's eyes. Generally, an anti-blue light coating is set on the light guide plate to reduce the damage of blue light to the human eye when used at night.

[0003] In the prior art, in order to ensure that the reflective screen can be used normally at night or in dimly lit environments, a light guide plate and light strips are added to the reflective screen to assist its use. During installation, some light strips are glued to the side of the light guide plate. During use, the light strips may generate a certain amount of heat, and the thermal expansion coefficients of the glue, light guide plate, and light strip may be different. When the temperature changes, stress may be generated, causing the light strip to shift or the glue to crack, resulting in low stability. In addition, when the light strip is disassembled, there may be glue residue, which is difficult to clean and affects the effect of re-bonding. Therefore, a blue light protection front light guide plate for a reflective screen is proposed to solve the above problems. Utility Model Content

[0004] In order to make up for the above shortcomings, the utility model provides a blue light protection front light guide plate for reflective screens, which aims to improve the problem of low stability of the installed light strips when some blue light protection front light guide plates for reflective screens are used in the existing technology.

[0005] In order to achieve the above-mentioned purpose, the utility model adopts the following technical solutions: a blue light protection front light guide plate for a reflective screen, comprising a light guide plate body, a limiting groove is provided on the front surface of the right end of the light guide plate body, the upper surface of the right end of the light guide plate body contacts a light bar, and a disassembly component is provided on the inner wall of the front end of the light bar, and the disassembly component includes a push plate, which is slidably connected to the inner wall of the front end of the light bar, and a card block is fixedly connected to the lower surface of the push plate, and the rear end of the card block contacts the inner wall of the limiting groove.

[0006] As a further description of the above technical solution:

[0007] The lower surface of the light guide plate body is fixedly connected with OCA optical glue, and the lower surface of the OCA optical glue is fixedly connected with electronic paper.

[0008] As a further description of the above technical solution:

[0009] The disassembly assembly also includes a threaded rod, which is rotatably connected to the front surface of the light bar. The outer wall of the threaded rod is threadedly connected to a slide, and the slide is slidably connected to the inner wall of the front end of the light bar near the front side of the push plate.

[0010] As a further description of the above technical solution:

[0011] The outer wall of the threaded rod is sleeved with a spring, one end of the spring is fixedly connected to the front surface of the push plate, and the other end of the spring is fixedly connected to the rear surface of the slide plate.

[0012] As a further description of the above technical solution:

[0013] The front surface of the top end of the push plate is fixedly connected with a protective plate, and the protective plate is slidably connected to the front surface of the top end of the light bar adjacent to the upper side of the threaded rod.

[0014] As a further description of the above technical solution:

[0015] The rear surface of the clamping block is configured as an inclined surface.

[0016] As a further description of the above technical solution:

[0017] The lower surface of the light guide plate body is provided with mesh dots.

[0018] As a further description of the above technical solution:

[0019] An anti-blue light coating is provided on the upper surface of the light guide plate body.

[0020] The utility model has the following beneficial effects:

[0021] 1. In the present invention, the light guide plate and the light strip are installed by means of a disassembly assembly, which does not require fixing by gluing, and will not loosen, thereby improving the stability of the light strip connection. In addition, when disassembling, it is only necessary to push the push plate, and no material will remain on the light guide plate, thereby improving practicality.

[0022] 2. In the present invention, by providing multiple groups of unevenly sized dots on the light guide plate, the light reflection effect can be improved. At the same time, an anti-blue light coating is provided on the light guide plate to reduce the rate of eye damage to the user. In addition, after the light strip is installed, the light strip can be fixed by rotating the threaded rod, thereby improving practicality. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a schematic diagram of the three-dimensional structure of the overall device in the utility model;

[0024] Figure 2 This is a schematic cross-sectional view of the three-dimensional structure of the overall device in the present invention;

[0025] Figure 3 This is a schematic diagram of the overall device of the three-dimensional structure of the light guide plate in the present utility model;

[0026] Figure 4 For this utility model Figure 2 A schematic diagram of the enlarged three-dimensional structure of the A region.

[0027] Legend:

[0028] 1. Electronic paper; 2. Light guide plate body; 3. Light bar; 41. Threaded rod; 42. Protective plate; 43. Push plate; 44. Slide plate; 45. Spring; 46. Block; 5. OCA optical adhesive; 6. Dots; 7. Limiting groove. DETAILED DESCRIPTION

[0029] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0030] Reference Figure 1 - Figure 2 、 Figure 4 , an embodiment provided by the present invention: a blue light protection front light guide plate for a reflective screen, comprising a light guide plate body 2, the light guide plate body 2 being a prior art, redistributing and guiding the light from the light source so that it can be evenly distributed over the entire panel, thereby achieving a uniform lighting effect, and being able to be implemented by technicians in this field, and since it is a prior art, no further description will be made in this case, a limiting groove 7 is provided on the front surface of the right end of the light guide plate body 2, and a light bar 3 is in contact with the upper surface of the right end of the light guide plate body 2, the light bar 3 being a prior art, which is mounted on the side of the light guide plate body 2, and in this invention The technicians in the field can realize it. Since it is a prior art, it will not be described in detail in this case. The inner wall of the front end of the light bar 3 is provided with a disassembly component, and the disassembly component includes a push plate 43. The upper surface of the push plate 43 is provided with a rectangular groove. When disassembling, the user can use a tool to insert it into it and push the push plate 43 to move, which improves practicality. The push plate 43 is slidably connected to the inner wall of the front end of the light bar 3, and the lower surface of the push plate 43 is fixedly connected to a card block 46. The rear end of the card block 46 contacts the inner wall of the limit groove 7, and the rear surface of the card block 46 is set to an inclined surface. The inclined surface can increase the speed of installation of the light bar 3 and improve practicality.

[0031] Reference Figure 1 - Figure 3 The lower surface of the light guide plate body 2 is fixedly connected with OCA optical glue 5. OCA optical glue 5 is a prior art, which is a double-sided adhesive tape without a substrate for bonding optical elements. It has the characteristics of high transparency, excellent bonding performance and strong weather resistance, etc., to ensure the stability of the connection between the light guide plate body 2 and the electronic paper 1. The lower surface of OCA optical glue 5 is fixedly connected with electronic paper 1. Electronic paper 1 is a prior art, a reflective display screen, which is a type of screen that relies on the reflection of external light to display images, and can be implemented by technicians in this field, so it will not be described in detail in this case.

[0032] Reference Figure 2 、 Figure 4 The disassembly component also includes a threaded rod 41. The threaded rod 41 is a prior art. In fact, the outer wall is provided with a rod-shaped structure with a thread. At the same time, it has the characteristics of axial self-locking to ensure the stability of the structural connection. In addition, a cross groove is provided on the front surface of the threaded rod 41, and the user can use a tool to rotate it. The threaded rod 41 passes through and is rotatably connected to the front surface of the light bar 3. The outer wall of the threaded rod 41 is threadedly connected to a slide plate 44, and the slide plate 44 is slidably connected to the inner wall of the front end of the light bar 3 near the front side of the push plate 43.

[0033] Reference Figure 2 、 Figure 4 The outer wall of the threaded rod 41 is sleeved with a spring 45, which has a certain elasticity. It always pushes the push plate 43 to move backward through its own elasticity to ensure the stability of the limit of the block 46. One end of the spring 45 is fixedly connected to the front surface of the push plate 43, and the other end of the spring 45 is fixedly connected to the rear surface of the slide plate 44. The front surface of the top of the push plate 43 is fixedly connected with a protective plate 42. The protective plate 42 can prevent external dust from entering the inner wall of the front end of the light bar 3, ensuring the service life of the spring 45 and the threaded rod 41. The protective plate 42 is slidably connected to the front surface of the top of the light bar 3 near the upper side of the threaded rod 41.

[0034] Reference Figure 1 - Figure 3 The lower surface of the light guide plate body 2 is provided with mesh dots 6, and there are multiple groups of mesh dots 6. The size, depth and density of the multiple groups of mesh dots 6 will be specially designed according to the number of lights, light positions and the size of the light guide plate of the equipped light strip 3. In addition, the arrangement principle of the multiple groups of mesh dots 6 basically follows that the closer to the light strip 3, the smaller and sparser the mesh dots 6 are, and the farther away, the larger and denser the mesh dots 6 are. The upper surface of the light guide plate body 2 is provided with an anti-blue light coating.

[0035] Working principle: When assembling the electronic paper 1 and the light guide plate body 2, the electronic paper 1 and the light guide plate body 2 can be glued together with the OCA optical glue 5. Then, the light bar 3 can be picked up and the card block 46 can be inserted into the inner wall of the front right end of the light guide plate body 2. During the insertion process, the light guide plate body 2 will push it along the inclined surface of the card block 46 to move. The card block 46 will drive the push plate 43 to move. The push plate 43 will squeeze the spring 45 until the rear end of the card block 46 overlaps with the limit groove 7. At this time, the spring 45 will push the card block 46 through its own elasticity. The push plate 43 moves in the opposite direction to reset, and the block 46 will also move in the opposite direction to insert into the inner wall of the limit groove 7. After the installation is completed, the threaded rod 41 can be rotated with a tool. At this time, the slide plate 44 threadedly connected to the outer wall of the threaded rod 41 will move horizontally, and the slide plate 44 will squeeze the spring 45. The squeezed spring 45 will push the push plate 43 and the block 46 through its own reaction force, making the block 46 limit more stable and improving practicality. When disassembling, the operation process is similar to the above operation process, and the coordination method between the structures is also the same, which improves stability.

[0036] When in use, the light emitted by the light strip 3 will pass through the light guide plate body 2 and be reflected by the mesh dots 6, so that the light is evenly distributed. In addition, the anti-blue light coating provided on the light guide plate body 2 can reduce the risk of eye damage to the user, thereby improving practicality.

[0037] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or make equivalent replacements for some of the technical features therein. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A blue light blocking front light guide plate for a reflective screen, comprising a light guide plate body (2), characterized in that: A limiting groove (7) is provided on the front surface of the right end of the light guide plate body (2); the upper surface of the right end of the light guide plate body (2) contacts the light bar (3); the inner wall of the front end of the light bar (3) is provided with a disassembly component, and the disassembly component includes a push plate (43); the push plate (43) is slidably connected to the inner wall of the front end of the light bar (3); the lower surface of the push plate (43) is fixedly connected to a clamping block (46); the rear end of the clamping block (46) contacts the inner wall of the limiting groove (7).

2. The anti-blue light front light guide plate for a reflective screen according to claim 1, characterized in that: The lower surface of the light guide plate main body (2) is fixedly connected to an OCA optical adhesive (5), and the lower surface of the OCA optical adhesive (5) is fixedly connected to the electronic paper (1).

3. The anti-blue light front light guide plate for a reflective screen according to claim 1, characterized in that: The disassembly assembly further comprises a threaded rod (41), the threaded rod (41) being rotatably connected to the front surface of the light bar (3), the outer wall of the threaded rod (41) being threadedly connected to a slide plate (44), and the slide plate (44) being slidably connected to the inner wall of the front end of the light bar (3) adjacent to the front side of the push plate (43).

4. The anti-blue light front light guide plate for a reflective screen according to claim 3, characterized in that: A spring (45) is sleeved on the outer wall of the threaded rod (41), one end of the spring (45) is fixedly connected to the front surface of the push plate (43), and the other end of the spring (45) is fixedly connected to the rear surface of the slide plate (44).

5. The anti-blue light front light guide plate for a reflective screen according to claim 1, characterized in that: The front surface of the top end of the push plate (43) is fixedly connected with a protective plate (42), and the protective plate (42) is slidably connected to the front surface of the top end of the light bar (3) adjacent to the upper side of the threaded rod (41).

6. The anti-blue light front light guide plate for a reflective screen according to claim 1, characterized in that: The rear surface of the clamping block (46) is configured as an inclined surface.

7. The anti-blue light front light guide plate for a reflective screen according to claim 1, characterized in that: The lower surface of the light guide plate main body (2) is provided with mesh dots (6).

8. The anti-blue light front light guide plate for a reflective screen according to claim 1, characterized in that: The upper surface of the light guide plate body (2) is provided with an anti-blue light coating.

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