Light guide plate with light diffusion function

Abstract

The utility model discloses a light guide plate with a light diffusion function, and belongs to the field of photoelectric materials, the light guide plate is characterized by comprising a transparent substrate, an ink back surface and a diffusion film, the ink back surface is located at the bottom of the transparent substrate, and the diffusion film is located at the top of the transparent substrate; a plurality of light holes distributed at equal intervals are formed in the surface of the transparent substrate, diffusion strips distributed at equal intervals are arranged on the inner walls of the peripheries of the light holes, reflection blocks are arranged on the inner walls, located above the diffusion strips, of the light holes, and diffusion sheets are arranged on the inner walls, located above the reflection blocks, of the light holes. A diffusion block is arranged on the inner wall, located above the diffusion sheet, of the light hole. The light diffusion device has the advantages that the diffusion range is wider, and the light diffusion effect is improved.

Description

Technical Field

[0001] The present application belongs to the field of optoelectronic materials, and more specifically, it relates to a light guide plate with light diffusion function. Background Art

[0002] The light guide plate is a high-tech product that converts a line light source into a surface light source. The existing light guide plate uses an optical-grade acrylic (PMMA) sheet, and then uses an ink with extremely high reflectivity and no light absorption to print light guide points on the bottom of the optical-grade acrylic sheet. The optical-grade acrylic sheet is used to absorb the light emitted from the lamp and stay on the surface of the optical-grade acrylic sheet. When the light hits each light guide point, the reflected light will spread to various angles, and then destroy the reflection condition and be emitted from the front of the light guide plate.

[0003] At present, a Chinese patent with announcement number CN202522726U discloses a light guide plate with a light diffusion function, which is provided with a transparent substrate and a diffusion film. The diffusion film is adhered to the front side of the transparent substrate. Since the back side of the transparent substrate has a plurality of light guide points, the transparent substrate can have a light guide function and can convert a linear light source into a surface light source. Since the outer surface of the diffusion film is an uneven rough surface, it has a light diffusion function. Therefore, the utility model has the dual functions of light guiding and light diffusion, which can not only convert a linear light source into a surface light source, but also make the light emission more uniform and soft.

[0004] In the prior art, the light guide plate similar to the above-mentioned one only utilizes the uneven rough surface of the outer surface of the diffusion film to diffuse the light, which not only has a limited light diffusion range but also has a poor diffusion effect, so there is room for improvement. Utility Model Content

[0005] In view of the shortcomings of the prior art, the purpose of the utility model is to provide a light guide plate with a light diffusion function, which has the advantage of a wider diffusion range and improved light diffusion effect.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a light guide plate with a light diffusion function, comprising a transparent substrate, an ink back and a diffusion film, the ink back is located at the bottom of the transparent substrate, the diffusion film is located at the top of the transparent substrate, a plurality of light-transmitting holes distributed at equal distances are opened on the surface of the transparent substrate, diffusion strips distributed at equal distances are arranged on the inner walls around the light-transmitting holes, a reflection block is arranged on the inner wall of the light-transmitting hole above the diffusion strip, a diffusion sheet is arranged on the inner wall of the light-transmitting hole above the reflection block, and a diffusion block is arranged on the inner wall of the light-transmitting hole above the diffusion sheet.

[0007] By adopting the above technical solution, when in use, the light of the digital tube shines from the bottom to the transparent substrate, part of the light passes through the transparent substrate and then diffused by the diffusion film, and the other part of the light enters the light-transmitting hole. The light passes through the diffusion strip, the reflection block, the diffusion sheet and the diffusion block in the light-transmitting hole in turn for reflection and diffusion, and then enters the diffusion film from the top of the transparent substrate, and then diffuses through the diffusion film, so that the diffusion range is wider and the light diffusion effect is improved.

[0008] In a preferred embodiment: a plurality of diffusion protrusions distributed at equal distances are arranged on the surface of the diffusion film, and the diffusion protrusions are integrally formed with the diffusion film.

[0009] By adopting the above technical solution and setting the diffusion protrusion, the light will be refracted when passing through the diffusion protrusion, thereby diffusing the light and improving the diffusion effect.

[0010] In a preferred embodiment: the diffusion film is made of transparent plastic material.

[0011] By adopting the above technical solution, the diffusion film made of transparent plastic material has good hardness, which can prevent the diffusion film from being wrinkled during use and affecting diffusion.

[0012] In a preferred embodiment: the interior of the transparent substrate is filled with diffusion particles, and the diffusion particles are made of irregular transparent plastic material.

[0013] By adopting the above technical solution and disposing the diffusion particles, when the light passes through the transparent substrate, the diffusion particles can refract and diffuse the light, thereby improving the light diffusion effect.

[0014] In a preferred embodiment: the cross-section of the light-transmitting hole is an isosceles trapezoidal structure, and the side of the light-transmitting hole with a larger opening is arranged downward.

[0015] By adopting the above technical solution, the design of the isosceles trapezoidal cross-section can increase the light transmission range of the light transmission hole, making it easier for light to enter the light transmission hole for diffusion.

[0016] In a preferred embodiment: the cross section of the diffusion strip is an arc-shaped structure.

[0017] By adopting the above technical solution, the design of the arc-shaped cross-section structure can increase the light receiving area of ​​the diffusion strip, further improving the light diffusion effect.

[0018] In a preferred embodiment: a same diffusion plate is arranged between the two reflection blocks, and the diffusion plate is made of transparent material.

[0019] By adopting the above technical solution and setting the diffusion plate, light can be diffused, thereby improving the light diffusion effect.

[0020] In a preferred embodiment: the cross section of the diffuser plate is a sawtooth structure.

[0021] By adopting the above technical solution, the design of the sawtooth structure of the cross section can increase the light receiving area of ​​the diffuser plate and improve the light diffusion effect of the diffuser plate.

[0022] Compared with the prior art, this application has the following beneficial effects:

[0023] 1. When the light of the digital tube shines from the bottom to the transparent substrate, part of the light passes through the transparent substrate and then diffuses through the diffusion film, and the other part of the light enters the light-transmitting hole. The light passes through the diffusion strip, reflection block, diffusion sheet and diffusion block in the light-transmitting hole for reflection and diffusion, and then enters the diffusion film from the top of the transparent substrate, and then diffuses through the diffusion film. The diffusion range is wider, which improves the light diffusion effect;

[0024] 2. When light passes through the diffusion protrusion, it will be refracted, which can diffuse the light and improve the diffusion effect; the diffusion film made of transparent plastic material has good hardness, which can avoid the situation where wrinkles appear on the diffusion film during use, affecting the diffusion;

[0025] 3. When light passes through the transparent substrate, the diffusion particles can refract and diffuse the light. The design of the isosceles trapezoidal cross-section can increase the light transmission range of the light-transmitting hole and facilitate the light to enter the light-transmitting hole for diffusion. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 Schematic diagram of the three-dimensional structure of this embodiment;

[0027] Figure 2 It is a schematic cross-sectional view of the present embodiment;

[0028] Figure 3 yes Figure 2 Schematic diagram of the enlarged structure at point A in the middle.

[0029] Explanation of the reference numerals: 1. Transparent substrate; 2. Back side of ink; 3. Diffusion film; 4. Light-transmitting hole; 5. Diffusion strip; 6. Reflection block; 7. Diffusion sheet; 8. Diffusion block; 9. Diffusion protrusion; 10. Diffusion particle; 11. Diffusion plate. DETAILED DESCRIPTION

[0030] In order to make the objectives, technical solutions and advantages of the embodiments of the present disclosure more clear, the technical solutions of the embodiments of the present disclosure will be clearly and completely described below in conjunction with the drawings of the embodiments of the present disclosure.

[0031] In the description of the present disclosure, it should be understood that the terms "upper", "lower", "left", "right", "inside", "outside", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, or are the orientations or positional relationships in which the disclosed product is conventionally placed when in use, or are the orientations or positional relationships conventionally understood by those skilled in the art. They are only for the convenience of describing the present disclosure and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present disclosure.

[0032] A light guide plate with light diffusion function, such as Figure 1-3 As shown, it includes a transparent substrate 1, an ink back side 2 and a diffusion film 3, the ink back side 2 is located at the bottom of the transparent substrate 1, the diffusion film 3 is located at the top of the transparent substrate 1, and a plurality of light-transmitting holes 4 distributed at equal distances are opened on the surface of the transparent substrate 1; the inner walls around the light-transmitting holes 4 are provided with diffusion strips 5 distributed at equal distances, the inner wall of the light-transmitting hole 4 located above the diffusion strips 5 is provided with a reflection block 6, the inner wall of the light-transmitting hole 4 located above the reflection block 6 is provided with a diffusion sheet 7, and the inner wall of the light-transmitting hole 4 located above the diffusion sheet 7 is installed with a diffusion block 8.

[0033] In one of the specific embodiments, a plurality of diffusion protrusions 9 are arranged on the surface of the diffusion film 3 at equal distances. The diffusion protrusions 9 are integrally formed with the diffusion film 3. The diffusion protrusions 9 can cause light to be refracted when passing through the diffusion protrusions 9, thereby diffusing the light and improving the diffusion effect. In this embodiment, the diffusion film 3 is made of transparent plastic material. The diffusion film 3 made of transparent plastic material has good hardness, which can prevent the diffusion film 3 from being wrinkled during use and affecting the diffusion.

[0034] In one specific embodiment, the interior of the transparent substrate 1 is filled with diffusion particles 10, and the diffusion particles 10 are made of irregular transparent plastic material. When light passes through the transparent substrate 1, the diffusion particles 10 can refract and diffuse the light, thereby improving the light diffusion effect;

[0035] In one specific embodiment, the cross-section of the light-transmitting hole 4 is an isosceles trapezoidal structure, and the larger opening side of the light-transmitting hole 4 is arranged downward, so as to increase the light transmission range of the light-transmitting hole 4 and facilitate light to enter the light-transmitting hole 4 for diffusion.

[0036] It is worth mentioning that the cross section of the diffusion strip 5 in this embodiment is an arc-shaped structure, which can increase the light receiving area and further improve the light diffusion effect. In addition, a diffuser plate 11 is arranged between the two reflective blocks 6. The diffuser plate 11 is made of a transparent material, and the light can be diffused through the diffuser plate 11, thereby improving the light diffusion effect.

[0037] It should be noted that the cross section of the diffuser 11 is a sawtooth structure. The diffuser 11 with a sawtooth structure in cross section can increase the light receiving area, thereby improving the light diffusion effect of the diffuser 11 .

[0038] The working process and beneficial effects of the utility model are as follows: when the light of the digital tube shines from the bottom to the transparent substrate 1, part of the light passes through the transparent substrate 1 and then diffused by the diffusion film 3, and the other part of the light enters the light-transmitting hole 4. The light passes through the diffusion strip 5, the reflection block 6, the diffusion sheet 7 and the diffusion block 8 in the light-transmitting hole 4 in turn for reflection and diffusion, and then enters the diffusion film 3 from the top of the transparent substrate 1, and then diffuses through the diffusion film 3, so that the diffusion range is wider and the light diffusion effect is improved.

[0039] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the design concept of the present invention should be included in the protection scope of the present invention.

Claims

1. A light guide plate with a light diffusion function, comprising a transparent substrate (1), an ink back surface (2) and a diffusion film (3), wherein the ink back surface (2) is located at the bottom of the transparent substrate (1), and the diffusion film (3) is located at the top of the transparent substrate (1), characterized in that: The surface of the transparent substrate (1) is provided with a plurality of light-transmitting holes (4) distributed at equal distances; The inner walls around the light-transmitting hole (4) are provided with diffusion strips (5) distributed at equal distances, the inner wall of the light-transmitting hole (4) located above the diffusion strips (5) is provided with a reflection block (6), the inner wall of the light-transmitting hole (4) located above the reflection block (6) is provided with a diffusion sheet (7), and the inner wall of the light-transmitting hole (4) located above the diffusion sheet (7) is provided with a diffusion block (8).

2. The light guide plate with light diffusion function according to claim 1, characterized in that: The surface of the diffusion film (3) is provided with a plurality of diffusion protrusions (9) distributed at equal distances, and the diffusion protrusions (9) are integrally formed with the diffusion film (3).

3. The light guide plate with light diffusion function according to claim 2, characterized in that: The diffusion film (3) is made of transparent plastic material.

4. The light guide plate with light diffusion function according to claim 1, characterized in that: The interior of the transparent substrate (1) is filled with diffusion particles (10), and the diffusion particles (10) are made of irregular transparent plastic material.

5. The light guide plate with light diffusion function according to claim 1, characterized in that: The cross section of the light-transmitting hole (4) is in an isosceles trapezoidal structure, and the side of the light-transmitting hole (4) with a larger opening is arranged downward.

6. The light guide plate with light diffusion function according to claim 1, characterized in that: The cross section of the diffusion strip (5) is an arc-shaped structure.

7. The light guide plate with light diffusion function according to claim 6, characterized in that: A common diffusion plate (11) is arranged between the two reflection blocks (6), and the diffusion plate (11) is made of a transparent material.

8. The light guide plate with light diffusion function according to claim 7, characterized in that: The cross section of the diffusion plate (11) is a sawtooth structure.

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