A light guide plate assembly with an integrated reflective layer

Abstract

This utility model belongs to the field of light guide plate technology, specifically a light guide plate assembly with an integrated reflective layer. It includes a light guide plate body with a V-shaped groove on its lower surface; a first reflective layer located below the light guide plate body; a second reflective layer adhered to one side of the light guide plate body; a first edging; a second edging, with a light source assembly embedded inside, opposite to the second reflective layer; and a diffusion film. The first reflective layer can directly reflect the light emitted by the light source assembly through its first folded surface, reflecting light that might otherwise be directly lost to the effective light-emitting area of ​​the light guide plate body. Simultaneously, horizontal light emitted by the light source assembly can be directly reflected by the second reflective layer, and the reflected light will illuminate the second folded surface, which further reflects this light to the effective light-emitting area. Through the dual reflection effect of the first and second folded surfaces, light loss is greatly reduced, and light utilization is significantly improved.

Description

Technical Field

[0001] This utility model belongs to the field of light guide plate technology, and specifically relates to a light guide plate assembly with an integrated reflective layer. Background Technology

[0002] A light guide plate is an optical element that converts a line light source or point light source into a surface light source. It is widely used in LCD displays, lighting fixtures, and other fields. Its working principle is to utilize total internal reflection of light inside the light guide plate to conduct the light emitted by the light source to the entire surface of the light guide plate, and then refract the light through dots or other optical structures to form a uniform surface light source.

[0003] Patent application (publication number: CN207074278U) discloses a novel light guide plate, which includes a first light guide plate layer, a second light guide plate layer, and a reflective layer; the top surface of the first light guide plate layer is provided with a first dot layer; the lower surface of the first light guide plate layer is provided with a frosted surface; the upper surface of the second light guide plate layer is provided with a raised layer; the lower surface of the second light guide plate layer is uniformly distributed with strip-shaped raised ridges, the cross-section of the strip-shaped raised ridges is semi-circular, and the surface of the raised ridge surface of the lower light guide plate layer is provided with a frosted surface.

[0004] In the aforementioned application, the first light guide plate layer and the second light guide plate layer are upper and lower layers with an unavoidable gap between them. Light will be lost due to refraction and reflection at the gap, which reduces the light output efficiency of the light guide plate. Utility Model Content

[0005] To address the problems mentioned in the background art, this utility model provides a light guide plate assembly with an integrated reflective layer, which solves the problem of light loss due to refraction and reflection at the gaps, thus reducing the light output efficiency of the light guide plate.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a light guide plate assembly with an integrated reflective layer, comprising: The light guide plate body has a V-shaped groove on its lower surface; Reflective layer one is located below the light guide plate body; The second reflective layer is glued to one side of the light guide plate body; Binding 1; Edge 2, wherein a light source component is embedded inside edge 2, and the light source component is opposite to reflective layer 2; The diffusion film is located on the upper surface of the light guide plate body; The first reflective layer includes a plane, a first folded surface, and a second folded surface. The top ends of the first folded surface and the second folded surface are connected, and the bottom ends are connected to the plane. The first folded surface and the second folded surface are arranged symmetrically.

[0007] Optional, also includes: The protective layer is adhesively bonded to the lower surface of the reflective layer.

[0008] Optionally, the upper surface of the light guide plate body is provided with dots, the dots being hemispherical recessed structures and distributed in a rectangular array of several dots.

[0009] Optionally, the light source assembly includes: Circuit board; The LED beads are connected to the circuit board, which is then fixed to the side of the second edging with adhesive.

[0010] Optionally, the number of the first edge banding is two, and they are symmetrically distributed on both sides of the light guide plate body.

[0011] Optionally, the V-shaped grooves are arranged in a horizontal array, and both the first fold and the second fold are located inside the V-shaped grooves.

[0012] Optionally, the first and second edgings are U-shaped strips, and the diffusion film, light guide plate body, first reflective layer and protective layer from top to bottom are all within the range of the first and second edgings.

[0013] Compared with the prior art, the beneficial effects of this utility model are: This light guide plate assembly with integrated reflective layer can directly reflect the light emitted by the light source component through the first fold of the first reflective layer, reflecting the light that might otherwise be directly lost to the effective light output area of ​​the light guide plate body. At the same time, the horizontal light emitted by the light source component can be directly reflected by the second reflective layer. The light reflected by the second reflective layer will illuminate the second fold, which will further reflect these lights to the effective light output area. Through the dual reflection effect of the first and second folds, the light loss is greatly reduced and the light utilization rate is significantly improved. The first and second folds are symmetrically arranged, which can reflect light in different directions in a targeted manner, so that the reflected light can be evenly distributed in the light guide plate body. The rectangular array of hemispherical dots on the upper surface of the light guide plate body can assist in the refraction of light. Combined with the diffusion effect of the diffusion film, the final emitted light is more uniform, which can effectively improve the problem of uneven light output of the light guide plate. Attached Figure Description

[0014] To more clearly illustrate the technical solutions of the embodiments of this utility model, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model, used together with the embodiments of this utility model to explain this utility model, and do not constitute a limitation on this utility model. In the drawings: Figure 1 This is a complete structural schematic diagram of the present invention; Figure 2 This is a top view structural diagram of the present invention; Figure 3 The explosive structure of this utility model Figure 1 ; Figure 4 The explosive structure of this utility model Figure 2 ; Figure 5 This is a structural diagram of the reflective layer of this utility model.

[0015] In the picture: 1. Light guide plate body; 101. Dots; 2. V-shaped groove; 3. Reflective layer one; 301. Plane; 302. Folded surface one; 303. Folded surface two; 4. Reflective layer two; 5. Edge binding one; 6. Edge binding two; 7. Light source assembly; 701. Circuit board; 702. LED beads; 8. Diffusion membrane; 9. Protective layer. Detailed Implementation

[0016] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the protection scope of the present utility model.

[0017] Please see Figure 1-5 This utility model provides the following technical solution: a light guide plate assembly with an integrated reflective layer, comprising: The light guide plate body 1 has a V-shaped groove 2 on its lower surface; Reflective layer 3 is located below the light guide plate body 1; Reflective layer 2 4 is glued to one side of the light guide plate body 1; Edge binding 15; Edge banding 2 6, with a light source component 7 embedded inside edge banding 2 6, the light source component 7 being opposite to reflective layer 2 4; The diffusion film 8 is located on the upper surface of the light guide plate body 1; The reflective layer 3 includes a plane 301, a first folded surface 302 and a second folded surface 303. The top ends of the first folded surface 302 and the second folded surface 303 are connected, and the bottom ends are connected to the plane 301. The first folded surface 302 and the second folded surface 303 are arranged symmetrically.

[0018] In this embodiment, the reflective layer 3's folded surface 302 can directly reflect the light emitted by the light source component 7, reflecting the light that might otherwise be directly lost to the effective light-emitting area of ​​the light guide plate body 1. At the same time, the horizontal light emitted by the light source component 7 can be directly reflected by the reflective layer 4. The light reflected by the reflective layer 4 will illuminate the folded surface 303, which will further reflect these lights to the effective light-emitting area. Through the dual reflection effect of the folded surface 302 and the folded surface 303, the light loss is greatly reduced and the light utilization rate is significantly improved. The folded surface 302 and the folded surface 303 are symmetrically arranged, which can reflect light in different directions in a targeted manner, so that the reflected light can be evenly distributed in the light guide plate body 1. The rectangular array of hemispherical dots 101 on the upper surface of the light guide plate body 1 can assist in refracting light. Combined with the diffusion effect of the diffusion film 8, the final emitted light is more uniform, which can effectively improve the problem of uneven light output of the light guide plate.

[0019] Furthermore, it also includes: Protective layer 9 is adhered to the lower surface of reflective layer 3.

[0020] Specifically, the protective layer 9 is made of PET protective film and is attached to the lower surface of the reflective layer 3 with adhesive. The protective layer 9 can protect the reflective layer 3 from wear.

[0021] Furthermore, the upper surface of the light guide plate body 1 is provided with dots 101, which are hemispherical recessed structures and are distributed in a rectangular array.

[0022] Specifically, the upper surface of the light guide plate body 1 is provided with dots 101 by molding. The dots 101 have a diameter of 0.8mm and are distributed in a rectangular array. When the light inside the light guide plate body 1 encounters the dots 101 during the transmission process, it is refracted and emitted towards the diffusion film 8. After being diffused by the diffusion film 8, it forms a uniform surface light source.

[0023] Furthermore, the light source assembly 7 includes: Circuit board 701; LED beads 702 and circuit board 701 are inserted through and fixed to the side of edge banding 6 with adhesive.

[0024] Specifically, the LED beads 702 are soldered onto the circuit board 701 with a spacing of 8mm. The circuit board 701 passes through the side of the second edging 6 and is fixed to the second edging 6 with epoxy resin adhesive. After the power is turned on, the circuit board 701 supplies power to the LED beads 702, and the LED beads 702 emit light.

[0025] Furthermore, there are two edge-wrapping elements 5, which are symmetrically distributed on both sides of the light guide plate body 1.

[0026] Specifically, the first edge banding 5 is made of ABS plastic, and there are two of them. They are symmetrically distributed on the front and back sides of the light guide plate body 1. Together with the second edge banding 6, they can ensure the stability of each layer structure and avoid relative displacement.

[0027] Furthermore, the V-shaped grooves 2 are arranged in a horizontal array, and both the first fold surface 302 and the second fold surface 303 are located inside the V-shaped grooves 2.

[0028] Specifically, the reflective layer 3 uses an aluminum-plated reflective film. The tops of the first folded surface 302 and the second folded surface 303 are connected to form a sharp angle of 50°. Both the first folded surface 302 and the second folded surface 303 are embedded inside the V-shaped groove 2 and are in contact with the inner wall of the V-shaped groove 2. Some light directly enters the light guide plate body 1 for total internal reflection, and some light shines on the first folded surface 302 of the reflective layer 3. The first folded surface 302 reflects these light rays back into the light guide plate body 1. The light rays that shine on the right side of the light guide plate body 1 are reflected back into the light guide plate body 1 by the second reflective layer 4. A portion of the reflected light shines on the second folded surface 303, which then reflects it back into the light guide plate body 1.

[0029] Furthermore, the first edge banding 5 and the second edge banding 6 are U-shaped strips, and the diffusion film 8, the light guide plate body 1, the first reflective layer 3 and the protective layer 9 from top to bottom are all within the range of the first edge banding 5 and the second edge banding 6.

[0030] Specifically, the overall fixation is achieved by the interlocking of edge banding 5 and edge banding 6.

[0031] The working principle or usage process of this utility model is as follows: When the light guide plate assembly with integrated reflective layer is working, the circuit board 701 of the light source assembly 7 is first powered on. After the LED beads 702 on the circuit board 701 are powered on, they emit light. Part of the light emitted by the LED beads 702 directly illuminates the light guide plate body 1 and is conducted within the light guide plate body 1. The other part of the light directly illuminates the folded surface 302 of the reflective layer 3. Since the folded surface 302 has a specific tilt angle, it can reflect the light illuminating it to the effective light-emitting area of ​​the light guide plate body 1, reducing direct light loss. The light illuminating the reflective layer 4 through the light guide plate body 1 is reflected back into the light guide plate body 1 by the reflective layer 4. This part of the light reflected back into the light guide plate body 1 is further conducted. A portion of the light rays will illuminate the second folded surface 303 of the reflective layer 3. The second folded surface 303 is symmetrically arranged with the first folded surface 302 and also has a specific tilt angle, which can reflect these rays to the effective light-emitting area of ​​the light guide plate body 1. During the light transmission process, the hemispherical dots 101 on the upper surface of the light guide plate body 1 will refract the light, causing the light to change its propagation direction and be emitted towards the diffusion film 8. After the emitted light passes through the diffusion film 8, it forms a uniform surface light source. At the same time, the protective layer 9 protects the reflective layer 3 and prevents it from being damaged. The U-shaped strip-shaped edging 5 and edging 6 wrap and limit the diffusion film 8, the light guide plate body 1, the reflective layer 3 and the protective layer 9 as a whole, ensuring the stability of the entire component structure and ensuring the stability of the light emission effect.

[0032] Finally, it should be noted that the above descriptions are merely preferred embodiments of this utility model and are not intended to limit the utility model. The selection and detailed description of these embodiments in this specification are for the purpose of better explaining the principles and practical applications of this utility model, thereby enabling those skilled in the art to better understand and utilize it. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A light guide plate assembly with an integrated reflective layer, characterized in that, include: The light guide plate body (1) has a V-shaped groove (2) on its lower surface. Reflective layer 1 (3) is located below the light guide plate body (1); The second reflective layer (4) is glued to one side of the light guide plate body (1); Edge binding 1 (5); Edge banding two (6), wherein a light source assembly (7) is embedded inside the edge banding two (6), and the light source assembly (7) is opposite to the reflective layer two (4); A diffusion film (8) is located on the upper surface of the light guide plate body (1); The first reflective layer (3) includes a plane (301), a first fold (302) and a second fold (303). The top ends of the first fold (302) and the second fold (303) are connected, and the bottom ends are connected to the plane (301). The first fold (302) and the second fold (303) are arranged symmetrically.

2. The light guide plate assembly with an integrated reflective layer according to claim 1, characterized in that, Also includes: The protective layer (9) is glued to the lower surface of the reflective layer (3).

3. The light guide plate assembly with an integrated reflective layer according to claim 1, characterized in that: The upper surface of the light guide plate body (1) is provided with dots (101), which are hemispherical recessed structures and are distributed in a rectangular array.

4. The light guide plate assembly with an integrated reflective layer according to claim 1, characterized in that, The light source assembly (7) includes: Circuit board (701); LED beads (702), the circuit board (701) passes through and is fixed to the side of the second edging (6) with adhesive.

5. A light guide plate assembly with an integrated reflective layer according to claim 1, characterized in that: The number of the first (5) is two, and they are symmetrically distributed on both sides of the light guide plate body (1).

6. The light guide plate assembly with an integrated reflective layer according to claim 1, characterized in that: The V-shaped grooves (2) are arranged in a horizontal array, and both the first fold (302) and the second fold (303) are located inside the V-shaped grooves (2).

7. A light guide plate assembly with an integrated reflective layer according to claim 2, characterized in that: The first edge (5) and the second edge (6) are U-shaped strips. The diffusion film (8), the light guide plate body (1), the first reflective layer (3) and the protective layer (9) from top to bottom are all within the range of the first edge (5) and the second edge (6).

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