CN210743461U

CN210743461U - LED display screen

Info

Publication number: CN210743461U
Application number: CN201922079751.8U
Authority: CN
Inventors: 甘玉书
Original assignee: Unilumin Group Co Ltd
Current assignee: Unilumin Group Co Ltd
Priority date: 2019-11-27
Filing date: 2019-11-27
Publication date: 2020-06-12
Anticipated expiration: 2029-11-27

Abstract

The utility model discloses a LED display screen belongs to LED display screen technical field. This LED display screen includes display module assembly and box, display module assembly with be equipped with soaking plate and first graphite alkene heat dissipation membrane between the box, the soaking plate includes evaporating surface and condensation surface, the evaporating surface is close to display module assembly, the condensation surface is close to the box, first graphite alkene heat dissipation membrane is located the condensation surface with between the box. The LED display screen in this embodiment, because the setting of soaking plate and first graphite alkene heat dissipation membrane, the soaking plate can initiatively absorb the heat that the display module assembly produced, and can be fast with conducting to the box effluvium, simple structure just can realize holistic samming heat dissipation, and in addition, the commonality is good, can be applicable to the LED display screen product of current various differences.

Description

LED display screen

Technical Field

The utility model relates to a LED display screen technical field, more specifically say, it relates to radiating LED display screen of samming.

Background

At present, the designed distance of the LED display screen is smaller and smaller, the required brightness is larger and larger, the temperature of the whole LED display screen is high, and how to well dissipate heat becomes a difficult problem in the industry. In the existing heat dissipation technology, a fan is arranged at the back of a box body in a relatively common mode in the industry, and free blowing is performed for heat dissipation. However, because of the limitation of the area, the fans can only be distributed in a special area, the heat dissipation is not uniform, and the heat dissipation efficiency is low due to passive heat dissipation.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a LED display screen, solve the fan and can only distribute in the special area, the heat dissipation is inhomogeneous, and makes passive heat dissipation, the lower technical problem of radiating efficiency.

The above technical purpose of the present invention can be achieved by the following technical solutions: the utility model provides a LED display screen, includes display module assembly and box, display module assembly with be equipped with soaking plate and first graphite alkene heat dissipation membrane between the box, the soaking plate includes evaporating surface and condensation surface, the evaporating surface is close to display module assembly, the condensation surface is close to the box, first graphite alkene heat dissipation membrane is located the condensation surface with between the box.

As a further optimization, a second graphene heat dissipation film is arranged between the evaporation surface of the soaking plate and the display module.

As a further optimization, the condensation surface of the soaking plate is provided with heat dissipation fins, and the first graphene heat dissipation film is located between the heat dissipation fins and the box body.

As a further optimization, a third graphene heat dissipation film is arranged between the condensation surface of the soaking plate and the heat dissipation fins.

As further optimization, the display module assembly includes PCB board and heat dissipation drain pan, the both sides that the PCB board is relative are equipped with lamp pearl and IC chip respectively, the heat dissipation drain pan is installed the PCB board be equipped with one side of IC chip, the heat dissipation drain pan includes fin and heat pipe, the heat pipe embedding is in the fin is close to one side of PCB board, just the heat pipe be used for with the face of PCB board contact with the side parallel and level of fin.

As a further optimization, the PCB heat dissipation base shell further comprises a locking assembly, the locking assembly comprises a screw, a copper column is arranged at the end, where the IC chip is, of the PCB, and the screw penetrates through the heat dissipation plate and is screwed into the copper column to enable the heat dissipation base shell and the PCB to be mounted together.

As a further optimization, the locking assembly further comprises a spring, one end of the spring is in contact with the heat sink, the other end of the spring is in contact with the screw, and the spring is elastically deformed when the screw is tightened.

Preferably, the locking assembly further comprises a spacer located between the heat sink and the spring.

Preferably, one side of the heat sink, which is far away from the PCB, is provided with heat dissipation fins.

As a further optimization, the heat dissipation fins and the heat pipe are perpendicular to each other.

To sum up, the utility model discloses following beneficial effect has: the LED display screen in this embodiment, because the setting of soaking plate and first graphite alkene heat dissipation membrane, the soaking plate can initiatively absorb the heat that the display module assembly produced, and can be fast with conducting to the box effluvium, simple structure just can realize holistic samming heat dissipation, and in addition, the commonality is good, can be applicable to the LED display screen product of current various differences.

Drawings

FIG. 1 is a schematic diagram of a partially exploded structure of an LED display screen in an embodiment;

FIG. 2 is a schematic structural diagram of a display module of an LED display screen in an embodiment;

fig. 3 is a schematic partial exploded view of a display module of an LED display panel according to an embodiment.

In the figure: 1. a display module; 11. a PCB board; 111. a copper pillar; 121. a heat sink; 122. a heat pipe; 123. a heat dissipating fin; 13. a locking assembly; 131. a screw; 132. a spring; 133. a gasket; 14. a graphite gasket; 2. a box body; 3. a vapor chamber; 4. a first graphene heat-dissipating film; 5. and heat dissipation fins.

Detailed Description

In order to make the technical problem, technical solution and advantageous effects to be solved by the present invention clearer and more obvious, the following description of the present invention with reference to the accompanying drawings and embodiments is provided for further details. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

As shown in fig. 1, the LED display screen in this embodiment includes display module 1 and box 2, is equipped with soaking plate 3 and first graphite alkene heat dissipation film 4 between display module 1 and the box 2, and soaking plate 3 includes evaporating surface and condensing surface, and the evaporating surface is close to display module 1, and the condensing surface is close to box 2, and first graphite alkene heat dissipation film 4 is located between condensing surface and the box 2. The soaking plate 3 is a vacuum chamber having a fine structure on the inner wall, and is usually made of copper. When heat is conducted to the evaporation area inside the soaking plate 3 from the display module 1 through the evaporation surface of the soaking plate 3, the cooling liquid in the cavity inside the soaking plate 3 is heated in the environment with low vacuum degree and then starts to generate the gasification phenomenon of the cooling liquid, at the moment, the heat energy is absorbed and the volume rapidly expands, the whole cavity is rapidly filled with the gaseous cooling medium, when the gaseous working medium contacts a relatively cold area, namely a condensation area, the condensation phenomenon can be generated, the heat is dissipated and transmitted to the box body 2 through the condensation surface, the condensed cooling liquid inside the soaking plate 3 returns to the evaporation area again through the capillary pipeline of the microstructure, and the operation is performed in the cavity repeatedly. The LED display screen in this embodiment, because the setting of soaking plate 3 and first graphite alkene heat dissipation membrane 4, soaking plate 3 can the initiative absorb the heat that display module assembly 1 produced, and can be fast with conducting to box 2 effluvium, simple structure just can realize holistic samming heat dissipation, and in addition, the commonality is good, can be applicable to the LED display screen product of current various differences.

As shown in fig. 1, for optimization, a second graphene heat dissipation film (not shown) is disposed between the evaporation surface of the vapor chamber 3 and the display module 1, and the second graphene heat dissipation film can be bonded to the evaporation surface of the vapor chamber 3 or to the display module 1. As optimization, the condensation surface of the soaking plate 3 is provided with the heat dissipation fins 5, the first graphene heat dissipation film 4 is located between the heat dissipation fins 5 and the box body 2, and the heat dissipation speed is further accelerated by the heat dissipation fins 5. The first graphene heat dissipation film 4 may be bonded to the heat dissipation fins 5, or may be bonded to the case 4. Preferably, a third graphene heat dissipation film (not shown) is disposed between the condensation surface of the soaking plate 3 and the heat dissipation fins 5, and the third graphene heat dissipation film may be bonded to the condensation surface of the soaking plate 3 or to the heat dissipation fins 5.

Combine as shown in fig. 2 and fig. 3, as optimizing, display module assembly 1 includes PCB board 11 and heat dissipation drain pan, and the both sides that PCB board 11 is relative are equipped with lamp pearl and IC chip respectively, and the heat dissipation drain pan is installed in the one side that is equipped with the IC chip of PCB board 11. The heat dissipation bottom case includes a heat sink 121 and a heat pipe 122, the heat pipe 122 is embedded in a side of the heat sink 121 close to the PCB 11, and a surface of the heat pipe 122 for contacting the PCB 11 is flush with a side surface of the heat sink 121. Heat generated from the IC chip on the PCB 11 is absorbed by the heat pipe 122 and transferred from the heat pipe 122 to the heat sink 121. As a further optimization, the display module 1 further includes a locking assembly 13, and the locking assembly 13 is used for mounting the heat dissipation bottom case and the PCB 11 together. The locking assembly 13 includes a screw 131, a copper pillar 111 is disposed at an IC chip end of the PCB 11, and the screw 131 passes through the heat sink 121 and is screwed into the copper pillar 111 to mount the heat sink bottom case and the PCB 11 together. The locking assembly 13 further includes a spring 132, one end of the spring 132 contacts the heat sink 121, and the other end contacts the screw 131, when the screw 131 is tightened, the spring 132 is elastically deformed, and the locking force applied to the heat sink 121 is uniform under the action of the spring 132. The locking assembly 13 further includes a spacer 133, the spacer 133 being positioned between the heat sink 121 and the spring 132 to reduce damage to the heat sink 121 when the screw 131 is tightened and to allow for better tightening.

As shown in fig. 3, as an optimization, the side of the heat sink 121 away from the PCB 11 is provided with heat dissipation fins 123, and the heat dissipation fins 123 can effectively increase the heat dissipation speed. The heat pipes 122 are uniformly provided with a plurality of heat dissipation fins 123, the heat pipes 122 are arranged along the length direction of the heat dissipation fins 121, and the heat dissipation fins 123 are arranged along the width direction of the heat dissipation fins 121. As shown in fig. 1, the heat dissipating fins 123 are vertically distributed, in the installation process of the display module 1, when the upper and lower heat dissipating fins 123 are in butt joint, the heat dissipating fins 123 of the upper and lower display modules 1 are in butt joint, the upper and lower surfaces of the gap between the heat dissipating fins 123 can be communicated, a heat dissipating fin 123 gap coherent channel is reserved between the bottommost display module 1 and the topmost display module 1, when the display module 1 is assembled on the box body 2, a vent hole is reserved at the edge of the box body 2 for the heat dissipating fins 123 to be connected, and then the butt joint of the heat dissipating fins 123 can be realized by the whole screen. Preferably, the surfaces of the heat pipe 122 and the heat sink 121 for contacting the PCB 11 are provided with the graphite gasket 14, that is, the graphite gasket 14 is provided between the PCB 11 and the heat sink bottom case, so that the PCB 11 is better soaked and the heat pipe 122 absorbs heat better. The side of the heat sink 121 facing away from the PCB board 11 is provided with a graphite gasket (not shown), i.e. the heat sink 121 and the heat sink fins 123 are seen as separate entities, which is located between the heat sink 121 and the heat sink fins 123. When the heat sink 121 and the heat dissipation fins 123 are integrally formed as a whole, a graphite gasket may not be provided between the heat sink 121 and the heat dissipation fins 123.

The above embodiments are merely illustrative of the present invention, and are not intended to limit the present invention, and those skilled in the art can make modifications to the above embodiments without inventive contribution as required after reading the present specification, but all the embodiments are protected by patent laws within the scope of the present invention.

Claims

1. The utility model provides a LED display screen, includes display module assembly and box, its characterized in that: the display module assembly with be equipped with soaking plate and first graphite alkene heat dissipation membrane between the box, the soaking plate includes evaporation surface and condensation surface, the evaporation surface is close to display module assembly, the condensation surface is close to the box, first graphite alkene heat dissipation membrane is located the condensation surface with between the box.

2. The LED display screen of claim 1, wherein: and a second graphene heat dissipation film is arranged between the evaporation surface of the soaking plate and the display module.

3. The LED display screen of claim 1, wherein: the condensation surface of the soaking plate is provided with heat dissipation fins, and the first graphene heat dissipation film is located between the heat dissipation fins and the box body.

4. The LED display screen of claim 3, wherein: and a third graphene heat dissipation film is arranged between the condensation surface of the soaking plate and the heat dissipation fins.

5. The LED display screen of claim 1, wherein: the display module assembly includes PCB board and heat dissipation drain pan, the both sides that the PCB board is relative are equipped with lamp pearl and IC chip respectively, the heat dissipation drain pan is installed be equipped with of PCB board one side of IC chip, the heat dissipation drain pan includes fin and heat pipe, the heat pipe embedding the fin is close to one side of PCB board, just the heat pipe be used for with the face of PCB board contact with the side parallel and level of fin.

6. The LED display screen of claim 5, wherein: the PCB is characterized by further comprising a locking assembly, the locking assembly comprises a screw, a copper column is arranged at the end, where the IC chip is, of the PCB, and the screw penetrates through the radiating fin and is screwed down to the copper column, so that the radiating bottom shell and the PCB are mounted together.

7. The LED display screen of claim 6, wherein: the locking assembly further comprises a spring, one end of the spring is in contact with the radiating fin, the other end of the spring is in contact with the screw, and when the screw is screwed down, the spring generates elastic deformation.

8. The LED display screen of claim 7, wherein: the locking assembly further includes a spacer positioned between the heat sink and the spring.

9. The LED display screen of claim 5, wherein: and one side of the radiating fin, which is far away from the PCB, is provided with radiating fins.

10. The LED display screen of claim 9, wherein: the radiating fins and the heat pipe are perpendicular to each other.