CN217588350U

CN217588350U - LED display screen

Info

Publication number: CN217588350U
Application number: CN202221362776.4U
Authority: CN
Inventors: 安国良; 刘志勇
Original assignee: Leyard Optoelectronic Co Ltd
Current assignee: Leyard Optoelectronic Co Ltd
Priority date: 2022-05-31
Filing date: 2022-05-31
Publication date: 2022-10-14
Anticipated expiration: 2032-05-31

Abstract

The utility model provides a LED display screen, LED display screen includes: a box body; the LED module is arranged on the box body, the box body comprises a box body main body and a supporting rib arranged on one side of the box body main body, which faces the LED module, the LED module comprises an LED lamp panel and a heating unit, the outer edge of the LED lamp panel is attached to the supporting rib, and the heating unit is arranged on one side of the LED lamp panel, which faces the box body; the first side of the heat conducting pad is attached to the heating unit, and the second side of the heat conducting pad is attached to the box body. Through the technical scheme that this application provided, can solve the heat dissipation inhomogeneous of the LED display screen among the correlation technique, lead to the not good problem of whole display effect of LED display screen.

Description

LED display screen

Technical Field

The utility model relates to an electronic product technical field particularly, relates to a LED display screen.

Background

With the development of the LED technology, LED display screens manufactured by using LEDs as light sources are more and more common in daily life, and greatly enrich people's lives. The LED display screen realizes the replacement of the display content of the screen mainly by controlling the working state of the light-emitting diode.

In the related art, an LED display screen is mainly composed of an LED module and a case. When the LED display screen works, the LED module can generate high heat, the heat on the LED module needs to be conducted to the box body, and then the box body dissipates heat to the outside air through convection and heat radiation.

However, in the related art, only the periphery of the LED module contacts the box body, so that the periphery of the LED module is better in heat dissipation, the middle of the LED module is poor in heat dissipation, and the heat dissipation of the LED display screen is uneven, so that the overall display effect of the LED display screen is poor.

SUMMERY OF THE UTILITY MODEL

The utility model provides a LED display screen to solve the heat dissipation inhomogeneous of the LED display screen among the correlation technique, lead to the not good problem of LED display screen overall display effect.

The utility model provides a LED display screen, LED display screen includes: a box body; the LED module is arranged on the box body, the box body comprises a box body main body and a supporting rib arranged on one side of the box body main body, which faces the LED module, the LED module comprises an LED lamp panel and a heating unit, the outer edge of the LED lamp panel is attached to the supporting rib, and the heating unit is arranged on one side of the LED lamp panel, which faces the box body; the first side of the heat conducting pad is attached to the heating unit, and the second side of the heat conducting pad is attached to the box body.

Further, the heating unit comprises a driving chip, and the driving chip is electrically connected with the lamp beads of the LED lamp panel.

Furthermore, the LED display screen comprises a plurality of heat conduction pads, a plurality of driving chips are arranged on the LED lamp panel, and the heat conduction pads and the driving chips are arranged in a one-to-one correspondence mode.

Further, the orthographic projection of the heating unit on the box body falls into the orthographic projection of the heat conducting pad on the box body.

Further, the heat conduction pad is made of a silica gel material.

Furthermore, the box body comprises a bottom plate, the supporting ribs are arranged on the bottom plate and protrude out of the bottom plate along the direction towards the LED module, and the second side of the heat conducting pad is attached to the bottom plate.

Further, the LED module includes a plurality of LED lamp plates, and the brace rod includes the edge muscle, horizontal muscle and indulges the muscle, and the edge muscle encloses the outer border of establishing at the bottom plate, and horizontal muscle intersects the setting with indulging the muscle, and the tip of horizontal muscle and indulging the muscle all extends to the edge muscle, and edge muscle, horizontal muscle and indulge the muscle separate the bottom plate for a plurality of assembly units, a plurality of assembly units and a plurality of LED lamp plate one-to-one setting.

Furthermore, the cross section of the heat conducting pad is of a rectangular structure; and/or the upper surface and the lower surface of the heat conducting pad are both in a plane structure.

Further, the LED display screen further comprises a fastener, the LED lamp panel is provided with a connecting column, the box body is provided with a connecting hole corresponding to the connecting column, and the fastener penetrates through the connecting hole and is connected with the connecting column.

Furthermore, the LED lamp panel is provided with a connector, the box body is provided with a PCB and a plug piece connected with the PCB, and the plug piece is in plug-in fit with the connector.

Use the technical scheme of the utility model, LED display screen includes box, LED module and heat conduction pad. Because the outer border of LED lamp plate is laminated with the brace rod mutually, consequently the heat of the outer border department of LED module can transmit to the box and dispel the heat through the box. Because the first side of heat conduction pad is installed on the unit that generates heat, the second side and the box main part of heat conduction pad are laminated mutually, and the heat of the unit that generates heat can be transmitted to the box and dispel the heat through the box through the heat conduction pad. By adopting the structure, the LED module has good heat dissipation performance all around and in the middle, so that the heat dissipation of the LED display screen is more uniform, the temperature of the LED display screen is more uniform, and further, the brightness isoparametric of the LED display screen has no difference, and the whole display effect of the LED display screen is better.

Drawings

The accompanying drawings, which form a part of the present application, are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the invention and not to limit the invention. In the drawings:

fig. 1 shows an exploded view of a related art LED display screen;

fig. 2 shows an exploded view of an LED display screen provided by an embodiment of the present invention;

fig. 3 shows a partial enlarged view at a in fig. 2;

FIG. 4 shows an exploded view of the LED module and thermal pad of FIG. 2;

FIG. 5 illustrates an assembly view of the LED module and thermal pad of FIG. 2;

fig. 6 shows a partial cross-sectional view of the assembled LED module, thermal pad, and case of fig. 2.

Wherein the figures include the following reference numerals:

10. a box body; 11. a base plate; 12. a side bar; 13. transverse ribs; 14. longitudinal ribs; 15. an assembly unit; 16. a groove;

20. an LED module; 21. an LED lamp panel; 211. connecting columns; 212. a joint member; 22. a heat generating unit; 221. a driving chip;

30. a thermally conductive pad.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. The following description of at least one exemplary embodiment is merely illustrative in nature and is in no way intended to limit the invention, its application, or uses. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.

As shown in fig. 2 to 6, the embodiment of the utility model provides a LED display screen, the LED display screen includes box 10, LED module 20 and heat conduction pad 30, LED module 20 sets up on box 10, box 10 includes the box main part and sets up the brace rod in one side of box main part orientation LED module 20, LED module 20 includes LED lamp plate 21 and heating unit 22, the outer border and the brace rod of LED lamp plate 21 laminate mutually, heating unit 22 sets up the one side towards box 10 at LED lamp plate 21, the first side and the heating unit 22 of heat conduction pad 30 laminate mutually, the second side and the box main part of heat conduction pad 30 laminate mutually.

Use the technical scheme of the utility model, LED display screen includes box 10, LED module 20 and heat conduction pad 30. Because the outer border of LED lamp plate 21 is laminated with the brace rod mutually, the heat of consequently LED module 20's outer border department can transmit to box 10 and dispel the heat through box 10. Since the first side of the thermal pad 30 is mounted on the heat generating unit 22 and the second side of the thermal pad 30 is attached to the case body, the heat of the heat generating unit 22 can be transferred to the case 10 through the thermal pad 30 and dissipated through the case 10. By adopting the structure, the LED module 20 has good heat dissipation performance all around and in the middle, so that the heat dissipation of the LED display screen is more uniform, the temperature of the LED display screen is more uniform, and further, the brightness isoparametric of the LED display screen has no difference, and the whole display effect of the LED display screen is better.

In the present embodiment, the thermal pad 30 is attached to the heat generating unit 22 by a bonding method, and the thickness of the thermal pad 30 is greater than or equal to the gap between the heat generating unit 22 and the box body 10, so that two sides of the thermal pad 30 can be attached to the heat generating unit 22 and the box body 10 respectively.

It should be noted that, as shown in fig. 1, in the prior art, the LED module is only contacted with the support rib through the outer edge to dissipate heat of the LED module 20, no heat dissipation structure is provided in the middle of the box 10, the middle of the LED module 20 only dissipates heat of the middle of the LED module 20 to the air through the heat radiation manner, and the difference between the heat transfer rates of the heat dissipation manner through the support rib and the heat radiation manner is large, so that the heat dissipation effect of each part of the LED display screen is uneven. Adopt the LED display screen that this embodiment provided, through the radiating mode that the heat conduction pad 30 heat conduction to box 10 is passed through to the radiating mode of LED module 20 and the centre of box 10 to the brace rod for everywhere of LED display screen all can dispel the heat through box 10, consequently, LED module 20 all has good heat dispersion all around with in the middle, thereby makes the heat dissipation of LED display screen more even.

Wherein, the case 10 can be used to support and protect the LED module 20.

As shown in fig. 4, the heating unit 22 includes a driving chip 221, and the driving chip 221 is electrically connected to a lamp bead of the LED lamp panel 21. By adopting the driving chip 221, the output current can be a constant value, so that the lamp bead of the LED lamp panel 21 is in a stable working state and is protected.

In this embodiment, because the driving chip 221 has a larger heat value than other heat generating units on the LED lamp panel 21, and the driving chip 221 has a larger number on the LED lamp panel 21, the thermal pad 30 may be disposed on the driving chip 221 to dissipate heat of the driving chip 221, and further dissipate heat of the LED display screen. Of course, the heating unit 22 may also be another heating element on the LED lamp panel, as long as the heat conducting pad 30 can be used to dissipate heat for the LED lamp panel 21.

As shown in fig. 2, 4 and 5, the LED display panel includes a plurality of thermal pads 30, a plurality of driving chips 221 are disposed on the LED lamp panel 21, and the plurality of thermal pads 30 and the plurality of driving chips 221 are disposed in a one-to-one correspondence. Adopt above-mentioned structure, can be so that every driver chip 221 homoenergetic on the LED lamp plate 21 has good radiating effect to make the inside radiating effect of LED display screen better, and then make LED display screen temperature everywhere more even.

In this embodiment, the LED lamp panel 21 includes a plurality of lamp beads, and each lamp bead needs to be electrically connected to the driving chip 221. Specifically, a plurality of lamp pearls correspond a driver chip 221 and set up, so have the driver chip 221 that a plurality of intervals set up on the LED lamp plate 21, every driver chip 221 all is provided with a thermal pad 30 to on conducting the heat that driver chip 221 sent to box 10.

As shown in fig. 5 and 6, the orthographic projection of the heat generating unit 22 on the case body falls within the orthographic projection of the heat conductive pad 30 on the case body. With the above structure, the heat conducting pad 30 can dissipate heat of the heating unit 22 to the maximum, so that each part of the whole heating unit 22 can dissipate heat in time through the heat conducting pad 30.

In this embodiment, the orthographic projection area of the thermal pad 30 may be larger than that of the heating unit 22, but it should be ensured that after the thermal pad 30 is installed, the installation of the rest components is not affected, and the work of the LED lamp panel 21 is not affected.

Specifically, the heat conduction pad 30 is made by the silica gel material, and the heat conduction pad 30 made of the silica gel material has the advantages of good heat conduction performance, good insulation performance and easy deformation, so that the work of the LED lamp panel 21 can not be influenced when the heat conduction pad 30 can have a good heat conduction effect, and the LED lamp panel can be adaptively installed.

In this embodiment, when the LED module is assembled to the case 10, the second side of the thermal pad 30 is attached to the case 10 by using the characteristic of easy deformation of the silicone material, so that the heat of the driving chip 221 can be transferred to the case 10.

As shown in fig. 2, 3 and 6, the box body includes a bottom plate 11, the support rib is disposed on the bottom plate 11, the support rib protrudes from the bottom plate 11 along a direction toward the LED module 20, and a second side of the thermal pad 30 is attached to the bottom plate 11. The box body 10 with the structure has the advantages of simple structure and convenience in processing and assembling.

In this embodiment, the box body 10 is made of a metal material, so that the support ribs and the bottom plate 11 have good heat dissipation performance, and thus the heat dissipation of the LED display screen is more uniform.

As shown in fig. 2 and 3, the LED module 20 includes a plurality of LED lamp plates 21, and the brace rod includes edge bar 12, horizontal muscle 13 and indulges muscle 14, and edge bar 12 encloses the outside border of establishing at bottom plate 11, and horizontal muscle 13 intersects the setting with indulging muscle 14, and horizontal muscle 13 all extends to edge bar 12 with the tip of indulging muscle 14, and edge bar 12, horizontal muscle 13 and indulging muscle 14 separate bottom plate 11 for a plurality of assembly unit 15, a plurality of assembly unit 15 and a plurality of LED lamp plate 21 one-to-one setting. When the LED module adopting the structure can increase the area of the LED display screen, the edge and the inside of the LED display screen can have good heat dissipation effect, so that the area of the LED display screen can be larger.

In order to make the LED module 20 have a larger area, a plurality of transverse ribs 13 and a plurality of longitudinal ribs 14 may be disposed inside the box 10, the assembling units 15 may be formed in the inside of the box 10 in a manner that the transverse ribs 13 and the longitudinal ribs 14 intersect, and the bottom plate 11 may be separated into the assembling units 15 by the edge ribs 12, the transverse ribs 13, and the longitudinal ribs 14 at the edge of the box 10.

Specifically, in the inside of box, through the crossing mode that sets up of horizontal muscle 13 and vertical muscle 14, with the inside partition of box 10 become a plurality of assembly cell 15, at the horizontal limit of box, through horizontal muscle 13 and the crossing setting of vertical muscle 14, horizontal muscle 13 and the crossing setting of boundary rib 12, separate into a plurality of assembly cell 15 with the horizontal border of box 10, at the vertical limit of box, through horizontal muscle 13 and the crossing setting of vertical muscle 14, vertical muscle 14 and the crossing setting of boundary rib 12, separate into a plurality of assembly cell 15 with the vertical border of box 10.

In this embodiment, the LED lamp panels 21 are spliced to form the LED module 20.

The extending directions of the transverse ribs 13 and the longitudinal ribs 14 are perpendicular to each other, and the shape of the assembly unit 15 is adapted to the shape of the LED lamp panel 21.

In this embodiment, all be provided with recess 16 between adjacent horizontal muscle 13 and the adjacent muscle 14 of indulging, the coating has diffuse reflection material in recess 16, for example paint, because the LED lamp plate adopts the mode of concatenation to constitute LED module 20, through coating diffuse reflection material in recess 16, can effectively reduce horizontal muscle 13 and indulge the reflection of light effect of muscle 14, and then make horizontal muscle 13 and indulge muscle 14 and can not produce reflection light, and then do not have light and spill between the gap that the concatenation formed between LED lamp plate 21, thereby can strengthen user's use and experience.

As shown in fig. 4, the cross-sectional shape of the thermal pad 30 is a rectangular structure, and with the thermal pad 30 having the above structure, the shape of the thermal pad 30 can be adapted to the shape of the driving chip 221, which is beneficial for dissipating heat of the driving chip 221.

In this embodiment, the upper surface and the lower surface of the thermal pad 30 are both planar structures, and the thermal pad 30 with a planar structure is adopted, so as to facilitate the bonding of the driving chip 221 and the bottom plate 11 to the thermal pad 30, the driving chip 221 and the bottom plate 11 can form a large bonding area therebetween, and the heat dissipation of the driving chip 221 is facilitated.

As shown in fig. 5, the LED display screen further includes a fastener, the LED lamp panel 21 is provided with a connection column 211, the box body 10 has a connection hole corresponding to the connection column 211, and the fastener is inserted into the connection hole and connected to the connection column 211. The connecting structure of the connecting column 211 and the fastener has the advantages of simple connecting structure and convenience in operation.

In this embodiment, the fastener may be a screw. Be provided with a plurality of spliced poles 211 on the LED lamp plate 21, simultaneously, the LED display screen includes a plurality of screws, and then can make being connected of LED module and box more firm.

As shown in fig. 2 and 5, the LED lamp panel 21 is provided with a connector 212, and the housing 10 is provided with a PCB and a plug connected to the PCB, and the plug is inserted into and matched with the connector 212. By adopting the manner of inserting and matching the connector piece 212 and the plug piece, external electric energy and signals can be transmitted to the LED lamp panel 21, and the LED lamp panel has the advantage of simple structure.

Use the utility model provides a LED display screen has following beneficial effect:

(1) The heat conduction pad 30 is made of silica gel, the cross section of the heat conduction pad 30 is in a rectangular structure, the upper surface and the lower surface of the heat conduction pad 30 are both in a plane structure, the area of the heat conduction pad 30 is larger than or equal to that of the heating unit 22, the heat conduction pad 30 adopting the structure and the material can have good heat conduction performance and insulation performance, and the heat conduction pad 30, the driving chip 221 and the box body 10 have good bonding effect and large bonding area, so that the heat conduction pad 30 can transfer heat emitted by the driving chip 221 to the bottom plate 11 to radiate the driving chip 221;

(2) The heating unit 22 includes the driver chip 221, and the heating unit 22 can also be other heating members on the LED lamp panel as long as the heat conducting pad 30 can be utilized to dissipate heat for the middle of the LED lamp panel, so that the LED module 20 can have good heat dissipation performance all around and in the middle, and the heat dissipation of the LED display screen is more uniform.

The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. An LED display screen, characterized in that, LED display screen includes:

a case (10);

the LED module (20) is arranged on the box body (10), the box body (10) comprises a box body main body and a support rib arranged on one side, facing the LED module (20), of the box body main body, the LED module (20) comprises an LED lamp panel (21) and a heating unit (22), the outer edge of the LED lamp panel (21) is attached to the support rib, and the heating unit (22) is arranged on one side, facing the box body (10), of the LED lamp panel (21);

the heat-conducting pad (30), the first side of heat-conducting pad (30) with generate heat unit (22) is laminated mutually, the second side of heat-conducting pad (30) with the box main part is laminated mutually.

2. The LED display screen of claim 1, wherein the heating unit (22) comprises a driving chip (221), and the driving chip (221) is electrically connected with a lamp bead of the LED lamp panel (21).

3. The LED display screen according to claim 2, wherein the LED display screen comprises a plurality of the heat conducting pads (30), a plurality of the driving chips (221) are arranged on the LED lamp panel (21), and the plurality of the heat conducting pads (30) and the plurality of the driving chips (221) are arranged in a one-to-one correspondence manner.

4. The LED display screen of claim 1, wherein an orthographic projection of the heat generating unit (22) on the cabinet body falls within an orthographic projection of the thermal pad (30) on the cabinet body.

5. The LED display screen of claim 1, wherein the thermal pad (30) is made of a silicone material.

6. The LED display screen according to any one of claims 1 to 5, wherein the box body comprises a bottom plate (11), the support rib is arranged on the bottom plate (11) and protrudes out of the bottom plate (11) along a direction towards the LED module (20), and the second side of the thermal pad (30) is attached to the bottom plate (11).

7. The LED display screen of claim 6, characterized in that, LED module (20) includes a plurality of LED lamp plate (21), the brace rod includes edge muscle (12), horizontal muscle (13) and vertical muscle (14), edge muscle (12) enclose establish the outside border of bottom plate (11), horizontal muscle (13) with vertical muscle (14) intersect the setting, just horizontal muscle (13) with the tip of vertical muscle (14) all extends to edge muscle (12), edge muscle (12) horizontal muscle (13) and vertical muscle (14) will bottom plate (11) are separated for a plurality of assembly unit (15), and is a plurality of assembly unit (15) and a plurality of LED lamp plate (21) one-to-one sets up.

8. LED display screen according to one of claims 1 to 5,

the cross section of the heat conducting pad (30) is of a rectangular structure; and/or the presence of a gas in the gas,

the upper surface and the lower surface of the heat conducting pad (30) are both of a plane structure.

9. The LED display screen according to any one of claims 1 to 5, further comprising a fastener, wherein the LED lamp panel (21) is provided with a connecting column (211), the box body (10) is provided with a connecting hole corresponding to the connecting column (211), and the fastener is inserted into the connecting hole and connected with the connecting column (211).

10. The LED display screen according to any one of claims 1 to 5, wherein a connector piece (212) is arranged on the LED lamp panel (21), the box body (10) is provided with a PCB and a plug piece connected with the PCB, and the plug piece is in plug-in fit with the connector piece (212).