CN217544092U

CN217544092U - Display unit and LED display screen

Info

Publication number: CN217544092U
Application number: CN202221751592.7U
Authority: CN
Inventors: 汤仁君; 李阳; 刘世良; 王祥国; 王训
Original assignee: Shenzhen Zhouming Technology Co Ltd
Current assignee: Shenzhen Zhouming Technology Co Ltd
Priority date: 2022-07-08
Filing date: 2022-07-08
Publication date: 2022-10-04
Anticipated expiration: 2032-07-08

Abstract

The application provides a display element, including drain pan, PCB lamp plate, the PCB lamp plate with be equipped with elasticity heat conduction gasket between the drain pan, elasticity heat conduction gasket have with the first contact surface of PCB lamp plate contact and with the second contact surface of drain pan contact, be provided with on the first contact surface with the heat conduction district and the connection of components and parts contact the intercommunication district of heat conduction district, the intercommunication district is provided with pressure buffering portion. When the elastic heat conduction gasket is loaded, the elastic heat conduction gasket elastically deforms towards the pressure buffering part, so that the impact caused by the load can be more stably absorbed or weakened, and the structural stability of the display unit is further ensured.

Description

Display unit and LED display screen

Technical Field

The application relates to the technical field of LED display, in particular to a display unit and an LED display screen.

Background

With the development of 5G and 8K technologies in recent years, LED display screens are more applied to various fields such as entertainment and sports, public security, traffic, commercial display and the like, and besides the increase of demand, the requirements of the market on the technology and the display effect of the LED display screens are gradually increased.

The influence of the ambient temperature on the display effect of the LED display screen cannot be ignored, so that the problem of the temperature of the whole display unit is considered by many display screen manufacturers at present, and the most basic solution is that the heat of the PCB lamp panel is radiated through the bottom shell.

SUMMERY OF THE UTILITY MODEL

The features and advantages of the present application are set forth in part in the description that follows, or may be obvious from the description, or may be learned through practice of the application.

An object of this application is to provide a display element, solves the radiating problem of display element. The utility model provides a display element, includes drain pan, PCB lamp plate, the PCB lamp plate is kept away from the one end of drain pan is provided with the lamp pearl, the one end that the PCB lamp plate is close to the drain pan is provided with components and parts, the PCB lamp plate with be equipped with elasticity heat conduction gasket between the drain pan, elasticity heat conduction gasket have with the first contact surface of PCB lamp plate contact and with the second contact surface of drain pan contact, be provided with on the first contact surface with the heat conduction district and the connection of components and parts contact the intercommunication district of heat conduction district, the intercommunication district is provided with pressure buffering portion.

As an embodiment of the present application, the pressure buffering portion is a groove or an opening along at least one side of the heat conducting area.

As an embodiment of the present application, the slots or holes may be any shape and combination that is convenient for machining.

As an embodiment of the present application, a first thermal adhesive layer is disposed on the first contact surface, and a second thermal adhesive layer is disposed on the second contact surface, where the viscosity of the first thermal adhesive layer is smaller than that of the second thermal adhesive layer.

As an embodiment of the present application, the first thermal adhesive layer is connected to the second thermal adhesive layer through an elastic layer.

As an embodiment of this application, elasticity heat conduction gasket is provided with location portion, elasticity heat conduction gasket passes through location portion location installation.

As an embodiment of this application, elasticity heat conduction gasket is provided with dodges the portion, dodge the portion dodge the PCB lamp plate with drain pan contact mounting face.

As an embodiment of the present application, the elastic heat conducting gasket is provided with a positioning portion, and the positioning portion is a positioning groove; and the bottom shell or the PCB lamp panel is provided with a positioning column matched with the positioning groove.

As an embodiment of the present application, a height of an end surface of the communication area is lower than or equal to a height of an end surface of the heat conduction area.

As an embodiment of the present application, an end surface height of the communication area is higher than an end surface height of the heat conduction area.

The application provides a display element sets up elasticity heat conduction gasket between PCB lamp plate and drain pan, and elasticity heat conduction gasket's atress position can carry out elastic expansion deformation to pressure buffering portion, and consequently the impact that the load arouses can be absorbed or weakened by more steady, has further guaranteed display element's structural stability.

The application also provides a display screen which is formed by splicing a plurality of display units.

The features and content of these solutions will be better understood by those skilled in the art from reading the present specification.

Drawings

Advantages and realisations of the present application will become more apparent from the following detailed description, given by way of example, with reference to the accompanying drawings, which are given for illustration purposes only and are not to be construed as limiting in any way, and in which:

fig. 1 is a schematic structural diagram of a display unit according to an embodiment of the present application.

Fig. 2 is a first structural schematic diagram of an elastic thermal pad according to an embodiment of the present disclosure.

Fig. 3 is a second schematic structural diagram of an elastic thermal pad according to an embodiment of the present disclosure.

Fig. 4 is a third schematic structural diagram of an elastic thermal pad according to an embodiment of the present application.

Fig. 5 is a structural schematic diagram of a display screen according to an embodiment of the present application.

Reference numerals:

10-a PCB lamp panel, 11-lamp beads, 12-components, 13-a bottom shell, 20-an elastic heat conduction gasket, 21-a heat conduction area, 22-a pressure buffering part, 23-a communication area, 24-a first contact surface, 25-a second contact surface, 26-an elastic layer, 27-an avoiding part, 31-a first heat conduction adhesive layer, 32-a second heat conduction adhesive layer and 40-a display unit.

Detailed Description

In the description of the present application, it is to be noted that, unless otherwise explicitly specified or limited, the terms "connected" and "connected" are to be interpreted broadly, e.g., as being fixed or detachable or integrally connected; can be mechanically or electrically connected; may be directly connected or indirectly connected through an intermediate. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art as appropriate.

As shown in fig. 1 and fig. 2, an embodiment of the present application provides a display unit 40, which includes a bottom shell 13 and a PCB lamp panel 10, wherein a lamp bead 11 is disposed at an end of the PCB lamp panel 10 away from the bottom shell 13, a component 12 is disposed at an end of the PCB lamp panel 10 close to the bottom shell 13, an elastic heat conducting gasket 20 is disposed between the PCB lamp panel 10 and the bottom shell 13, the elastic heat conducting gasket 20 has a first contact surface 24 contacting the PCB lamp panel 10 and a second contact surface 25 contacting the bottom shell 13, a heat conducting area 21 contacting the component 12 and a communicating area 23 connecting each heat conducting area 21 are disposed on the first contact surface 24, and a pressure buffer portion 22 is disposed on the communicating area 23.

This application embodiment is through setting up pressure buffering portion on elastic heat conduction gasket, and during the load, elastic heat conduction gasket's atress position can carry out elastic deformation to pressure buffering portion, and the impact that the load arouses can be by steady absorption or weaken. Meanwhile, large deformation can be realized with small load (extrusion force); under the condition of certain elastic deformation, the load is smaller, and the smaller load is equal to the smaller rebound force, so that the stability of the display unit structure is further enhanced; simultaneously, on conducting the heat on the PCB lamp plate to the drain pan through elasticity heat conduction gasket, possess better radiating effect, consequently effectively promoted the life of display element product.

Further, referring to fig. 2 to 4, the elastic thermal pad 20 includes a thermal conduction area 21 and a connection area 23, the shape of the thermal conduction area 21 of the elastic thermal pad 20 is preferably consistent with the shape and size of the component 12, in this embodiment, the component 12 may be a plurality of different components, and therefore, the size and shape are not limited to those mentioned in this embodiment. For convenience of illustration, the shape of the heat conduction region 21 is set to be square in the present embodiment. The communication area 23 is provided with a pressure buffer 22, in this embodiment the pressure buffer 22 is of slotted or perforated design, preferably of perforated design.

Specifically, as shown in fig. 2, one pressure buffer portion 22 is correspondingly disposed on the left side of the heat transfer area 21, and in another embodiment of the present application, one pressure buffer portion 22 may be shared by two heat transfer areas adjacent to each other vertically or horizontally, and therefore, the specific number and shape combination is not limited as long as the pressure buffer portions 22 are disposed on the circumference of the heat transfer area 21. Further, a plurality of pressure buffering portions 22 may be partially communicated in one direction, as shown in fig. 3, a plurality of heat transfer areas 21 in the vertical direction correspond to the same pressure buffering portion 22, and similarly, may be communicated in the horizontal direction or in other directions.

The heat conduction area of the elastic heat conduction gasket of the embodiment of the application can conduct heat to the display unit, through setting the communication area, form a whole elastic heat conduction gasket structure by communicating a plurality of heat conduction areas, the assembly is facilitated, through setting the pressure buffering part in the communication area, the load part of the elastic heat conduction gasket can elastically expand to the pressure buffering part, large deformation can be achieved by small load, the utilization force is an interaction principle, the small load is equal to small rebound force, and the stability of the whole structure of the display unit is facilitated.

In another embodiment, the height of the end surface of the communication area 23 is lower than that of the end surface of the heat conducting area 21, when the assembly process is performed, the heat conducting area 21 of the elastic heat conducting pad 20 is in contact with the component 12, and when the elastic heat conducting pad 20 is loaded, the heat conducting area 21 can be expanded and expanded to the pressure buffer portion and the communication area simultaneously to generate elastic deformation, so that the impact caused by the load can be absorbed or weakened more smoothly under the action of the communication area and the pressure buffer portion. Meanwhile, the elastic heat conducting gasket conducts the heat of the component, and the service life of the component is prolonged. In this embodiment, when the pressure buffering portion is a blind hole, the communicating region 23 and the pressure buffering portion 22 can be combined into a whole, so as to further reduce the weight of the elastic heat conducting gasket, and facilitate saving the material and processing cost of the elastic heat conducting gasket.

In other embodiments, the terminal surface height of connected region 23 is higher than or equal to the terminal surface height of heat conduction area 21, at this moment, connected region 23 contacts near one of drain pan 13 with PCB lamp plate 10, through carrying out elasticity extension to pressure buffer portion during connected region 13 and the heat conduction area 32 load of elasticity heat conduction gasket 20, the elasticity heat conduction gasket of this embodiment contacts with the PCB lamp plate through the connected region with elasticity heat conduction gasket, be favorable to the whole heat dissipation of PCB lamp plate, possess better radiating effect, consequently, can effectively promote display element's life.

Referring to fig. 4, in the embodiment of the present application, the elastic thermal pad 20 may be a multi-layer design, and includes a first thermal adhesive layer 31, an elastic layer 26, and a second thermal adhesive layer 32. Specifically, the elastic thermal conductive pad 20 has a first thermal conductive adhesive layer 31 disposed on the first contact surface 24, a second thermal conductive adhesive layer 32 disposed on the second contact surface 25, the first thermal conductive adhesive layer 31 and the second thermal conductive adhesive layer 32 are integrated by the elastic layer 26, and the viscosity of the first thermal conductive adhesive layer 31 is smaller than that of the second thermal conductive adhesive layer 32. First heat conduction adhesive layer 31, second heat conduction adhesive layer 32 set up elastic layer 26 that makes elastic heat conduction gasket 20 when load and load are relieved, avoid elastic heat conduction gasket 20 and drain pan or PCB lamp plate to take place relative displacement, can fix more steadily between PCB lamp plate 10 and drain pan 13, in addition, be greater than the viscidity on second viscidity layer through setting up the viscidity with first viscidity layer, when carrying out dismouting maintenance to display element, attached to on the drain pan of elastic heat conduction gasket ability at utmost, make PCB lamp plate one end near the drain pan expose, need not to increase unnecessary process. Furthermore, a metal layer (not shown) is arranged in the elastic layer, and the arrangement of the metal layer is favorable for enhancing the heat conduction effect of the elastic heat conduction gasket to a certain extent, so that the heat dissipation capacity of the display unit is further enhanced; meanwhile, the metal layer can play a supporting role when the elastic heat conducting gasket is loaded, deformation displacement in the direction perpendicular to the first contact surface and the second contact surface is reduced, and structural stability of the display unit is facilitated.

In an embodiment of the present application, the elastic heat conductive gasket 20 is circumferentially provided with an avoiding portion 27, which avoids a position where the PCB lamp panel directly contacts the bottom case. In other embodiments, according to the actual product needs, dodge portion 27 also can set up the middle part at elasticity heat conduction gasket 20, and further, dodge portion 27 both dodge PCB lamp plate and drain pan direct contact's position also be the local part of constituteing pressure buffer portion simultaneously, unite two into one, saved elasticity heat conduction gasket's local processing technology effectively, have more the practicality.

Furthermore, be provided with constant head tank (not shown in the figure) on the elasticity heat conduction gasket, can set up on first contact surface or on the second contact surface according to the in-service use needs, correspondingly, be equipped with on drain pan or the PCB lamp plate with constant head tank assorted reference column, match constant head tank and reference column and can fix a position the installation to elasticity heat conduction gasket. In this embodiment, dodge the setting of portion and constant head tank, conveniently add the equipment of display element and add man-hour and effectively install, be favorable to display element's equipment processing and structural stability.

The display unit that this application embodiment provided sets up between PCB lamp plate and drain pan and has elastic elasticity heat conduction gasket, can carry out elastic deformation to pressure buffer portion with less load with elasticity heat conduction gasket's atress position, therefore the impact that the load arouses can be by steady absorption or weaken. The stability of the display unit structure is further enhanced; simultaneously, on conducting the heat on the PCB lamp plate to the drain pan through elasticity heat conduction gasket, possess better radiating effect, consequently effectively promoted the life of display element product. Furthermore, the elastic heat conduction gasket of the embodiment of the application is integrally designed by arranging the communication area, so that the elastic heat conduction gasket is convenient to assemble, and the assembling and processing time is saved.

As shown in fig. 5, an embodiment of the present application provides a display screen, which may be an LED display screen, and includes a plurality of display units 40, the display units 40 are spliced into one display screen, and the display screen bodies with different lengths or widths can be spliced in a number combination according to actual use needs, so that the applicability is wide.

In the embodiment of the application, the shore hardness share 00 of the elastic heat-conducting gasket is not more than 35, and in specific implementation, the elastic heat-conducting gasket can be made of heat-conducting materials with certain elasticity, such as heat-conducting silica gel with certain compression performance, heat-conducting foam and the like, and the elastic heat-conducting gasket is not limited to specific materials.

While the preferred embodiments of the present application have been illustrated above with reference to the accompanying drawings, those skilled in the art can implement the present application in various modifications without departing from the scope and spirit of the present application. For instance, features illustrated or described as part of one embodiment, can be used with another embodiment to yield a still further embodiment. The above description is only for the purpose of illustrating the preferred embodiments of the present application and is not intended to limit the scope of the present application, which is defined by the appended claims and their equivalents.

Claims

1. The utility model provides a display element, includes drain pan, PCB lamp plate, the PCB lamp plate is kept away from the one end of drain pan is provided with the lamp pearl, the one end that the PCB lamp plate is close to the drain pan is provided with components and parts, its characterized in that, the PCB lamp plate with be equipped with elasticity heat gasket between the drain pan, elasticity heat gasket have with the first contact surface of PCB lamp plate contact and with the second contact surface of drain pan contact, be provided with on the first contact surface with the heat conduction district and the connection of components and parts contact the intercommunication district of heat conduction district, the intercommunication district is provided with pressure buffer portion.

2. The display unit of claim 1, wherein the pressure buffer is slotted or perforated along at least one side of the thermal conduction area.

3. The display unit of claim 2, wherein the slots or openings can be any shape and combination that facilitates machining.

4. The display unit according to claim 3, wherein a first thermally conductive adhesive layer is provided on the first contact surface, and a second thermally conductive adhesive layer is provided on the second contact surface, the first thermally conductive adhesive layer having a smaller viscosity than the second thermally conductive adhesive layer.

5. The display unit of claim 4, wherein the first thermally conductive adhesive layer is connected to the second thermally conductive adhesive layer by an elastic layer.

6. The display unit of claim 1, wherein the elastic heat conducting gasket is provided with an avoiding portion, and the avoiding portion avoids the contact mounting surface of the PCB lamp panel and the bottom case.

7. The display unit of claim 6, wherein the resilient thermal pad is provided with a positioning portion, the positioning portion being a positioning groove; and the bottom shell or the PCB lamp panel is provided with a positioning column matched with the positioning groove.

8. The display unit according to any one of claims 1 to 7, wherein a height of an end surface of the communication area is lower than a height of an end surface of the heat conduction area.

9. The display unit according to any one of claims 1 to 7, wherein a height of an end surface of the communication area is higher than or equal to a height of an end surface of the heat conduction area.

10. A display screen formed by splicing a plurality of display units as claimed in any one of claims 1 to 9.