CN213423514U

CN213423514U - Light guide plate with diffusion function

Info

Publication number: CN213423514U
Application number: CN202022584850.4U
Authority: CN
Inventors: 彭迪生; 董文海
Original assignee: Suzhou Pengfu Photoelectric Technology Co ltd
Current assignee: Suzhou Pengfu Photoelectric Technology Co ltd
Priority date: 2020-11-11
Filing date: 2020-11-11
Publication date: 2021-06-11
Anticipated expiration: 2030-11-11

Abstract

The utility model discloses a light guide plate with diffusion function, which comprises a light guide plate body, a circuit board is arranged below the light guide plate body, LED lamp beads are uniformly arranged on the circuit board, through holes corresponding to the LED lamp beads are arranged on the light guide plate body, a fixing mechanism is arranged between the light guide plate body and the circuit board, the fixing mechanism comprises a limiting column connected on the light guide plate body, a buckle is arranged below the limiting post, the cross section of the buckle is in a regular triangle shape, a limiting groove is arranged on the circuit board, the limiting column and the buckle are inserted into the limiting groove, the two side wall surfaces in the limiting groove are provided with limiting blocks, the buckle is connected with the stopper block, the utility model discloses can utilize fixed establishment to carry out the joint between with light guide plate and the circuit board, effectively avoid between light guide plate and the circuit board because of LED lamp pearl generate heat and cause not hard up, and simple structure conveniently dismantles.

Description

Light guide plate with diffusion function

Technical Field

The utility model relates to a backlight unit technical field especially relates to a light guide plate with diffusion function.

Background

Liquid crystal displays have advantages of high image quality, small size, light weight, low driving voltage, and low power consumption, and are widely used in electronic products such as mobile phones, tablet computers, and displays. The conventional side-entry light guide plate defines one side surface of the light guide plate as a light incident surface, two opposite surfaces adjacent to and perpendicular to the light incident surface are a light emitting surface and a light emitting surface respectively, the light emitting surface is provided with the mesh points, the light emitting surface is generally designed to be a plane, light emitted by an LED light bar enters the light guide plate from the light incident surface, partial light is totally reflected and destroyed when the light is transmitted to the mesh points, and the light is refracted out from the light emitting surface of the light guide plate, forming a backlight source;

most of the existing light guide plates are fixed with the circuit board through glue, and LED lamp beads on the circuit board generate heat after being used for a period of time, so that the phenomenon of degumming between the light guide plates and the circuit board is easily caused, and the structure of the backlight module is unstable.

SUMMERY OF THE UTILITY MODEL

In order to overcome the defects of the prior art, the utility model provides a light guide plate with diffusion function can utilize fixed establishment to carry out the joint between light guide plate and the circuit board, effectively avoids between light guide plate and the circuit board because of LED lamp pearl generate heat and cause not hard up, and simple structure conveniently dismantles.

In order to solve the technical problem, the utility model provides a following technical scheme: the utility model provides a light guide plate with diffusion function, includes the light guide plate body, light guide plate body below is equipped with the circuit board, evenly be equipped with LED lamp pearl on the circuit board, be equipped with the through-hole that corresponds with LED lamp pearl on the light guide plate body, be equipped with fixed establishment between light guide plate body and the circuit board, fixed establishment is including connecting the spacing post on the light guide plate body, spacing post below is equipped with the buckle, the cross-section of buckle is regular triangle-shaped, be equipped with the spacing groove on the circuit board, spacing post and buckle insert the spacing inslot, be equipped with the stopper on the wall surface of spacing inslot both sides, the buckle is connected with.

As a preferred technical scheme of the utility model, the light guide plate body includes the income plain noodles of one side, income plain noodles one side bottom is equipped with the plane of reflection, the plane of reflection top is equipped with out the plain noodles, evenly be equipped with the light guide slot on the play plain noodles.

As a preferred technical scheme of the utility model, the equidistance distributes in the one side with the circuit board contact on the light guide plate body has the inserted block, the equidistance distributes on the circuit board has the slot, slot and inserted block looks adaptation.

As a preferred technical scheme of the utility model, fixed establishment is equipped with two sets ofly, and is two sets of fixed establishment sets up the both ends at light guide plate body and circuit board junction respectively.

As an optimized technical scheme of the utility model, the light guide plate body is dull and stereotyped.

Compared with the prior art, the utility model discloses the beneficial effect that can reach is:

1. the utility model is provided with a spacing post, a spacing groove, a limiting block and the like, when the light guide plate and the circuit board are assembled, the spacing post and the buckle are aligned and inserted into the spacing groove, the limiting block and the buckle are connected in a clamping way, the light guide plate and the circuit board can be clamped by using a fixing mechanism, the looseness caused by the heating of the LED lamp bead between the light guide plate and the circuit board is effectively avoided, and the structure is simple and convenient to disassemble;

2. the utility model discloses be equipped with the light guide groove, evenly set up the light guide groove through on the play plain noodles and can spread the light of reflection, can also make the light that the play plain noodles jets out more even when improving the diffusibility of light guide plate.

Drawings

FIG. 1 is a schematic structural view of the present invention;

FIG. 2 is an enlarged view of the point A in FIG. 1 according to the present invention;

FIG. 3 is an enlarged view of the point B in FIG. 1 according to the present invention;

FIG. 4 is a schematic structural view of the light guide plate body of the present invention;

wherein: 1. a light guide plate body; 2. a circuit board; 3. a through hole; 4. LED lamp beads; 5. inserting a block; 6. a slot; 7. a limiting column; 8. buckling; 9. a limiting groove; 10. a limiting block; 11. a reflective surface; 12. a light incident surface; 13. a light-emitting surface; 14. a light guide groove.

Detailed Description

In order to make the technical means, the creation features, the achievement purposes and the functions of the invention easy to understand, the invention is further explained below with reference to the specific embodiments, but the following embodiments are only the preferred embodiments of the invention, not all. Based on the embodiments in the implementation, other embodiments obtained by those skilled in the art without any creative work belong to the protection scope of the present invention. The experimental methods in the following examples are conventional methods unless otherwise specified, and materials, reagents and the like used in the following examples are commercially available unless otherwise specified.

Example (b):

as shown in fig. 1 and 2, the utility model provides a light guide plate with diffusion function, including light guide plate body 1, light guide plate body 1 below is equipped with circuit board 2, evenly be equipped with LED lamp pearl 4 on circuit board 2, be equipped with the through-hole 3 that corresponds with LED lamp pearl 4 on the light guide plate body 1, be equipped with fixed establishment between light guide plate body 1 and circuit board 2, fixed establishment includes spacing post 7 of connecting on light guide plate body 1, spacing post 7 below is equipped with buckle 8, the cross-section of buckle 8 is regular triangle-shaped, be equipped with spacing groove 9 on circuit board 2, spacing post 7 and buckle 8 insert in spacing groove 9, be equipped with stopper 10 on the both sides wall in spacing groove 9, buckle 8 is connected with stopper 10 block;

when equipment light guide plate and circuit board 2, aim at spacing post 7 and buckle 8 and insert spacing groove 9, stopper 10 and buckle 8 carry out the block and connect, can utilize fixed establishment to carry out the joint between light guide plate and the circuit board 2, effectively avoid between light guide plate and the circuit board 2 because of LED lamp pearl 4 generate heat and cause not hard up, and simple structure conveniently dismantles.

In another embodiment, as shown in fig. 1 and 4, the present invention discloses that the light guide plate body 1 includes a light incident surface 12 on one side, a reflective surface 11 is disposed at the bottom of the light incident surface 12 on one side, a light emitting surface 13 is disposed above the reflective surface 11, and light guide grooves 14 are uniformly disposed on the light emitting surface 13; the light guide grooves 14 are uniformly formed on the light emitting surface 13, so that the reflected light can be diffused, the diffusion performance of the light guide plate is improved, and the light emitted from the light emitting surface 13 is more uniform.

In another embodiment, as shown in fig. 1 and fig. 3, the utility model discloses that the surface of the light guide plate body 1 contacting the circuit board 2 is equidistantly distributed with the insertion blocks 5, the circuit board 2 is equidistantly distributed with the insertion slots 6, and the insertion slots 6 are matched with the insertion blocks 5; through setting up inserted block 5 on light guide plate body 1, set up slot 6 on circuit board 2 and can fix a position between light guide plate body 1 and the circuit board 2, convenient equipment can also make the connection between light guide plate body 1 and the circuit board 2 more firm simultaneously.

In another embodiment, as shown in fig. 1, the present invention discloses that two sets of fixing mechanisms are provided, and the two sets of fixing mechanisms are respectively disposed at two ends of the connection between the light guide plate body 1 and the circuit board 2; stability between light guide plate body 1 and circuit board 2 can further be improved through all setting up fixed establishment at light guide plate body 1 both ends, increases its fixed strength.

In another embodiment, as shown in fig. 1, the present invention discloses that the light guide plate body 1 is a flat plate; the light guide plate body 1 is flat, so that light emitted by the backlight source can be conveniently and uniformly reflected.

In the present disclosure, unless expressly stated or limited otherwise, the first feature "on" or "under" the second feature may comprise direct contact between the first and second features, or may comprise contact between the first and second features not directly. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.

The foregoing shows and describes the general principles, essential features, and advantages of the invention. It should be understood by those skilled in the art that the present invention is not limited by the above embodiments, and the description in the above embodiments and the description is only preferred examples of the present invention, and is not intended to limit the present invention, and that the present invention can have various changes and modifications without departing from the spirit and scope of the present invention, and these changes and modifications all fall into the scope of the claimed invention. The scope of the invention is defined by the appended claims and equivalents thereof.

Claims

1. The utility model provides a light guide plate with diffusion function, includes light guide plate body (1), its characterized in that: the LED light guide plate is characterized in that a circuit board (2) is arranged below the light guide plate body (1), LED lamp beads (4) are evenly arranged on the circuit board (2), through holes (3) corresponding to the LED lamp beads (4) are formed in the light guide plate body (1), a fixing mechanism is arranged between the light guide plate body (1) and the circuit board (2), the fixing mechanism comprises a limiting column (7) connected to the light guide plate body (1), a buckle (8) is arranged below the limiting column (7), the cross section of the buckle (8) is in a regular triangular shape, a limiting groove (9) is formed in the circuit board (2), the limiting column (7) and the buckle (8) are inserted into the limiting groove (9), a limiting block (10) is arranged on the two side walls in the limiting groove (9), and the buckle (8) is connected with the limiting block.

2. The light guide plate with a diffusion function according to claim 1, wherein: the light guide plate body (1) comprises a light incident surface (12) on one side, a reflecting surface (11) is arranged at the bottom of one side of the light incident surface (12), a light emergent surface (13) is arranged above the reflecting surface (11), and light guide grooves (14) are uniformly formed in the light emergent surface (13).

3. The light guide plate with a diffusion function according to claim 1, wherein: the light guide plate is characterized in that inserting blocks (5) are equidistantly distributed on one surface of the light guide plate body (1) in contact with the circuit board (2), inserting grooves (6) are equidistantly distributed on the circuit board (2), and the inserting grooves (6) are matched with the inserting blocks (5).

4. The light guide plate with a diffusion function according to claim 1, wherein: the fixing mechanisms are two groups, and the two groups of fixing mechanisms are respectively arranged at two ends of the joint of the light guide plate body (1) and the circuit board (2).

5. The light guide plate with a diffusion function according to claim 1, wherein: the light guide plate body (1) is flat.