LED display screen backlight module capable of rapidly dissipating heat

Abstract

The utility model provides an LED display screen backlight module capable of dissipating heat quickly, and relates to the field of LED display screen backlight modules, the LED display screen backlight module comprises a backlight module rear shell, a backlight module front shell, a heat dissipation assembly, a circuit board and an LED display screen, the backlight module rear shell is connected to the rear side of the backlight module front shell, the circuit board is installed in the backlight module rear shell, and the heat dissipation assembly is connected with the LED display screen. The LED display screen is installed in the backlight module front shell, rear heat dissipation holes are formed in the outer edge of the backlight module rear shell, second through holes are formed in the upper rear side shell wall of the backlight module front shell, outer end plates are arranged on the two sides of the LED display screen, third through holes are formed in the outer end plates, and waterproof breathable films are arranged in the third through holes. The LED display screen backlight module solves the problems that an existing LED display screen backlight module cannot achieve an efficient heat dissipation effect on the basis that a fan is abandoned for heat dissipation, and a built-in circuit board lacks a damping protection effect.

Description

Technical Field

[0001] The utility model relates to the technical field of LED display screen backlight modules, in particular to a LED display screen backlight module with rapid heat dissipation. Background Art

[0002] With the use of LED display screens, a certain amount of heat will be generated and accumulated inside the device, accelerating the aging of the device and affecting the normal service life of the device. After searching, the prior art (application number: CN202020649767.8) records "an integrated LED interactive display screen, including a display screen, a folding mechanism is arranged on the display screen, and the display screen includes an LED display screen, a backlight module, a protective ring, a positioning plate, and a closing plate from bottom to top. The surface of the back of the LED display screen is fixedly connected to the front of the backlight module, and a switch is installed on the back of the LED display screen. The surface of the positioning plate is provided with a venting groove and a through groove, and the inside of the venting groove is fixedly connected with a pressure strip, and the bottom of the pressure strip is in contact with the surface of the back of the backlight module. A connection groove is provided on the closing plate, and the venting groove and the graphene column are arranged, and space is reserved inside the device, and graphene is used to conduct heat at all times, ensuring that the device is sealed, and effectively ensuring the heat dissipation of the internal environment, solving the problem of adding a heat dissipation hole or a heat dissipation fan behind the LED display screen, which not only increases the volume of the device, but also causes dust to accumulate inside the device, affecting the normal use of the LED display screen."

[0003] However, although the backlight module involved in the LED display screen in the prior art has achieved the heat dissipation effect, it is confirmed that there are still some shortcomings: in order to avoid the increase in volume caused by installing a fan, the existing LED display screen backlight module is provided with graphene columns for conduction heat dissipation, and the graphene columns cannot directly contact the circuit board, resulting in a deviation in the heat dissipation effect, and cannot have a good heat dissipation effect on the front LED display screen, and cannot achieve a rapid heat dissipation effect; secondly, the contact area between the graphene column and the outside world is limited, and an efficient heat dissipation effect cannot be achieved. In addition, the circuit board involved in the backlight module is generally fixedly installed, lacks a shock-absorbing protection effect, and is easily damaged by vibration during the transfer process. Utility Model Content

[0004] In order to overcome the defects of the prior art, a fast heat dissipation LED display backlight module is provided to solve the problem that the existing LED display backlight module cannot achieve efficient heat dissipation effect on the basis of abandoning fan heat dissipation and the built-in circuit board lacks shock absorption protection effect.

[0005] To achieve the above-mentioned purpose, a LED display screen backlight module with fast heat dissipation is provided, comprising: a backlight module rear shell, a backlight module front shell, a heat dissipation component, a circuit board and an LED display screen, wherein the backlight module rear shell is connected to the rear side of the backlight module front shell, and the circuit board is installed inside the backlight module rear shell, and the LED display screen is installed inside the backlight module front shell, the outer edge of the backlight module rear shell is provided with a rear heat dissipation hole, and the upper rear side shell wall of the backlight module front shell is provided with a second through hole, outer end plates are provided on both sides of the LED display screen, and a third through hole is provided inside the outer end plate, and a waterproof breathable membrane is provided inside the third through hole, the heat dissipation component comprises thermal conductive silicone grease arranged on the rear side of the circuit board, and a graphene plate is connected to the rear side of the thermal conductive silicone grease, and a diffusion plate is connected to the rear side of the graphene plate, and a heat dissipation fin is connected to the rear side of the diffusion plate, the edge of the circuit board is connected to an elastic plate, and an installation gap is provided on the rear side of the circuit board and between adjacent graphene plates.

[0006] Furthermore, the outer end plate is connected to the inner wall of the front shell of the backlight module by bolts, and the outer end plate extends outward beyond the width of the LED display screen itself.

[0007] Furthermore, a space is provided between the upper side of the LED display screen and the second through hole, and the LED display screen is electrically connected to the circuit board via a connecting wire.

[0008] Furthermore, the connection between the backlight module rear shell and the backlight module front shell is located outside the second through hole, and a space is provided between the upper shell wall of the backlight module front shell and the circuit board.

[0009] Furthermore, a mounting plate is provided on the inner side wall of the backlight module rear shell, and a first through hole is opened inside the mounting plate, and the elastic plate is fixed to the inner side of the mounting plate by bolt insertion.

[0010] Furthermore, the elastic plate is configured as a rectangular strip structure of polyurethane material, a through hole is provided inside the elastic plate, and the elastic plate is bonded to the edge of the circuit board by epoxy resin glue.

[0011] Furthermore, the graphene plates are arranged at equal intervals on the end surface of the circuit board, and the diffusion plate is connected to the graphene plate in a T-shaped structure.

[0012] The beneficial effects of the utility model are:

[0013] 1. When in use, the entire LED display backlight module is vertically installed on the designated frame. When working, through the third through holes opened on both sides of the LED display, the second through holes opened on the front shell of the backlight module, the rear heat dissipation holes opened on the rear shell of the backlight module and the first through holes opened on the inner mounting plate, the entire device is convenient for airflow to circulate forward and backward, thereby achieving a good heat dissipation effect by dissipating the heat generated by the LED display and the circuit board through the circulation of natural air;

[0014] 2. The thermal conductive silicone grease provided on the circuit board is used to directly transfer the heat generated by the circuit board to the outer diffusion plate through the graphene plate, and then quickly dissipate the heat through the heat dissipation fins (the heat dissipation fins and the diffusion plate are both made of graphene material), further enhancing the heat dissipation effect of the circuit board, so that the heat dissipation is coordinated with the external air flow to achieve dual heat dissipation purposes, thereby achieving efficient heat dissipation effect;

[0015] 3. By using an elastic plate made of polyurethane, the circuit board is suspended after being installed on the mounting plate. There is an elastic connection between the circuit board and the elastic plate, thereby achieving a shock-absorbing protection effect during the transfer process. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a front cross-sectional structural schematic diagram of an embodiment of the utility model.

[0017] Figure 2 For the utility model embodiment Figure 1 Schematic diagram of the structure at point A in the middle.

[0018] Figure 3 For the utility model embodiment Figure 1 Schematic diagram of the structure at point B in the middle.

[0019] Figure 4 The figure is a schematic diagram of the connection structure between the heat dissipation component and the circuit board according to an embodiment of the utility model.

[0020] In the figure: 1. backlight module rear shell; 11. rear heat dissipation hole; 12. mounting plate; 13. first through hole; 2. backlight module front shell; 21. second through hole; 22. connecting wire; 3. heat dissipation component; 31. thermal grease; 32. graphene plate; 33. diffusion plate; 34. heat dissipation fin; 4. circuit board; 41. mounting gap; 42. elastic plate; 5. LED display screen; 51. outer end plate; 52. third through hole; 53. waterproof breathable membrane. DETAILED DESCRIPTION

[0021] Reference Figures 1 to 4As shown, the utility model provides a fast heat dissipation LED display backlight module, comprising: a backlight module rear shell 1, a backlight module front shell 2, a heat dissipation component 3, a circuit board 4 and an LED display 5, the backlight module rear shell 1 is connected to the rear side of the backlight module front shell 2, and the circuit board 4 is installed inside the backlight module rear shell 1, and the LED display 5 is installed inside the backlight module front shell 2, the outer edge of the backlight module rear shell 1 is provided with a rear heat dissipation hole 11, and the upper rear side shell wall of the backlight module front shell 2 is provided with a second through hole 21, both sides of the LED display 5 are provided with outer end plates 51, and the inner part of the outer end plates 51 is provided with a third through hole 52, and the inner part of the third through hole 52 is provided with A waterproof and breathable membrane 53, an outer end plate 51 is connected to the inner wall of the front shell 2 of the backlight module by bolts, and the outer end plate 51 extends outward beyond the width of the LED display screen 5 itself, the heat dissipation component 3 includes a thermal grease 31 arranged on the rear side of the circuit board 4, and the rear side of the thermal grease 31 is connected to a graphene plate 32, and the rear side of the graphene plate 32 is connected to a diffusion plate 33, and the rear side of the diffusion plate 33 is connected to heat dissipation fins 34, the graphene plates 32 are arranged at equal intervals on the end face of the circuit board 4, and the diffusion plate 33 is connected to the graphene plate 32 in a T-shaped structure, the edge of the circuit board 4 is connected to an elastic plate 42, and an installation gap 41 is provided on the rear side of the circuit board 4 and between adjacent graphene plates 32.

[0022] In this embodiment, the backlight module rear shell 1, the backlight module front shell 2, the heat dissipation component 3, the circuit board 4 and the LED display screen 5 constitute the main structure of the LED display screen backlight module with rapid heat dissipation involved in this application.

[0023] The waterproof and breathable membrane 53 is also arranged in the rear heat dissipation hole 11, and the waterproof and breathable membrane 53 is made of polytetrafluoroethylene, so that it can achieve both waterproof and dustproof effects and breathable and heat dissipation effects.

[0024] Among them, the rear heat dissipation hole 11, the first through hole 13 and the third through hole 52 are all arranged at the edge of the module structure, and the upper and lower positions are close to each other, so that when the wind blows, it is easy to form air flow, and then form a pressure difference with the hot air inside on the path of the airflow, thereby bringing the hot air out.

[0025] It should be noted that the installation gap 41 is used to install the electronic components on the circuit board 4, and the laying position of the thermal conductive silicone grease 31 does not affect the connection relationship between the electrical components and does not cover the electronic components.

[0026] like Figure 1 As shown, a space is provided between the upper side of the LED display screen 5 and the second through hole 21, and the LED display screen 5 is electrically connected to the circuit board 4 through the connecting line 22, the connection between the backlight module rear shell 1 and the backlight module front shell 2 is located on the outside of the second through hole 21, and a space is provided between the upper shell wall of the backlight module front shell 2 and the circuit board 4.

[0027] As a preferred implementation, by installing the backlight module rear shell 1 on the outside of the second through hole 21 , the second through hole 21 is sealed on the outside to prevent water and dust from entering the rear side of the LED display screen 5 through the second through hole 21 .

[0028] like Figure 3 and Figure 4 As shown, a mounting plate 12 is provided on the inner wall of the backlight module rear shell 1, and a first through hole 13 is opened inside the mounting plate 12. At the same time, an elastic plate 42 is fixed to the inner side of the mounting plate 12 by bolt insertion. The elastic plate 42 is set as a rectangular strip structure of polyurethane material, and a through hole is opened inside the elastic plate 42. The elastic plate 42 is bonded to the edge of the circuit board 4 by epoxy resin glue.

[0029] Specifically, a T-shaped groove is provided on the outer edge of the circuit board 4, and the elastic plate 42 is partially engaged in the groove and then fixed by epoxy resin adhesive, so as to ensure the stability of the connection with the circuit board 4 when vibration occurs.

[0030] When in use, the entire LED display backlight module is vertically installed on a designated frame. When working, the entire device is convenient for airflow to circulate forward and backward through the third through holes opened on both sides of the LED display, the second through holes opened on the front shell of the backlight module, the rear heat dissipation holes opened on the rear shell of the backlight module, and the first through holes opened on the inner mounting plate, so that the heat generated by the LED display and the heat generated by the circuit board can achieve a good heat dissipation effect through the circulation of natural air; the thermal conductive silicone grease arranged on the circuit board is used to facilitate the direct transfer of the heat generated by the circuit board through the graphene plate to the outer diffusion plate, and then the heat is quickly dissipated through the heat dissipation fins (the heat dissipation fins and the diffusion plate are both set to graphene material), further enhancing the heat dissipation effect of the circuit board, so that the heat dissipation is achieved in conjunction with the external circulating airflow, and the dual heat dissipation purpose is achieved, thereby achieving an efficient heat dissipation effect; the elastic plate made of polyurethane material is used, so that after being installed with the mounting plate, the circuit board is in a suspended state at this time, and there is an elastic connection relationship between the circuit board and the elastic plate, thereby achieving a shock absorption protection effect during the transfer process.

[0031] The fast heat dissipation LED display backlight module of the utility model can effectively solve the problems that the existing LED display backlight module cannot achieve efficient heat dissipation effect on the basis of abandoning fan heat dissipation, and the built-in circuit board lacks shock absorption protection effect. It realizes a dual heat dissipation effect on the basis of the existing fast heat dissipation LED display backlight module technology, improves the efficiency of heat dissipation, and has a shock absorption protection effect on the circuit board.

Claims

1. A fast heat dissipation LED display backlight module, comprising: A backlight module rear shell (1), a backlight module front shell (2), a heat dissipation component (3), a circuit board (4) and an LED display screen (5), characterized in that: the backlight module rear shell (1) is connected to the rear side of the backlight module front shell (2), the circuit board (4) is installed inside the backlight module rear shell (1), and the LED display screen (5) is installed inside the backlight module front shell (2), the outer edge of the backlight module rear shell (1) is provided with a rear heat dissipation hole (11), and the upper rear side shell wall of the backlight module front shell (2) is provided with a second through hole (21), and the two sides of the LED display screen (5) are provided with external end plates (51), A third through hole (52) is provided inside the outer end plate (51), and a waterproof breathable membrane (53) is provided inside the third through hole (52). The heat dissipation component (3) comprises a thermal conductive silicone grease (31) provided on the rear side of the circuit board (4), and a graphene plate (32) is connected to the rear side of the thermal conductive silicone grease (31), and a diffusion plate (33) is connected to the rear side of the graphene plate (32), and a heat dissipation fin (34) is connected to the rear side of the diffusion plate (33). The edge of the circuit board (4) is connected to an elastic plate (42), and a mounting gap (41) is provided on the rear side of the circuit board (4) and between adjacent graphene plates (32).

2. The LED display backlight module with rapid heat dissipation according to claim 1, characterized in that: The outer end plate (51) is connected to the inner wall of the backlight module front shell (2) by means of bolts, and the outer end plate (51) extends outwards beyond the width of the LED display screen (5).

3. The LED display backlight module with rapid heat dissipation according to claim 1, characterized in that: A space is provided between the upper side of the LED display screen (5) and the second through hole (21), and the LED display screen (5) is electrically connected to the circuit board (4) via a connecting wire (22).

4. The LED display backlight module with rapid heat dissipation according to claim 1, characterized in that: The connection between the backlight module rear shell (1) and the backlight module front shell (2) is located outside the second through hole (21), and a space is provided between the upper shell wall of the backlight module front shell (2) and the circuit board (4).

5. The LED display backlight module with rapid heat dissipation according to claim 1, characterized in that: The inner side wall of the backlight module rear shell (1) is provided with a mounting plate (12), and a first through hole (13) is provided inside the mounting plate (12), while the elastic plate (42) is fixed to the inner side of the mounting plate (12) by means of bolts.

6. The LED display backlight module with rapid heat dissipation according to claim 1, characterized in that: The elastic plate (42) is a rectangular strip structure made of polyurethane material, a through hole is provided inside the elastic plate (42), and the elastic plate (42) is bonded to the edge of the circuit board (4) by epoxy resin glue.

7. The LED display backlight module with rapid heat dissipation according to claim 1, characterized in that: The graphene plates (32) are arranged at equal intervals on the end surface of the circuit board (4), and the diffusion plate (33) is connected to the graphene plate (32) in a T-shaped structure.

Images