CN211237605U - LED display screen - Google Patents
LED display screen Download PDFInfo
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- CN211237605U CN211237605U CN201922407381.6U CN201922407381U CN211237605U CN 211237605 U CN211237605 U CN 211237605U CN 201922407381 U CN201922407381 U CN 201922407381U CN 211237605 U CN211237605 U CN 211237605U
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- display screen
- led display
- porous metal
- heat
- metal block
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Abstract
The utility model discloses a LED display screen belongs to LED display screen technical field. The LED display screen comprises a lamp panel and a metal bottom shell, wherein the lamp panel comprises a lamp surface and a back surface, a soaking piece is attached to the back surface, and a porous metal block is arranged between the lamp panel and the metal bottom shell. The utility model adopts the mode that the heat conducting graphite sheet wraps the porous metal block to construct the heat conducting channel between the back of the lamp panel and the metal bottom case, the excellent heat conducting capacity of the porous metal block and the heat conducting graphite sheet can effectively take away the heat generated by the lamp panel, a large number of hole grid structures in the porous metal block also increase the heat radiating area of the porous metal block, and the heat of the lamp panel is effectively conducted to the air in the cavity and the metal bottom case; in addition, compared with the traditional heat conducting medium, the medium has the advantages of easy disassembly and assembly, small specific gravity, high heat conducting efficiency, compressibility and the like, and is more suitable for the display equipment of the LED display screen which needs to be disassembled and assembled frequently.
Description
Technical Field
The utility model relates to a LED display screen technical field, more specifically say, it relates to an adopt radiating LED display screen of porous metal piece.
Background
The existing LED display screen, especially the small-spacing LED display screen, has the defects that the temperature of the lamp surface and the driving IC surface of the LED display screen in a normal working state is higher due to the fact that the LED chip emits light and generates heat and the driving IC components and the power lamp heating devices which are densely distributed on the back surface of the LED lamp panel generate heat. For realizing waterproof dustproof function, LED display screen majority adopts closed structure, and most LED display screen products adopt the metal drain pan to dispel the heat, nevertheless in order to guarantee the concatenation roughness of lamp face, the contact surface between LED lamp plate and the metal drain pan only is the marginal area of lamp plate drive IC face, and the heat that leads to conducting to the metal drain pan from the lamp plate is limited, can't the heat-sinking capability of full play metal drain pan.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a LED display screen, it is limited to solve the heat of conducting to the metal drain pan from the lamp house, the technical problem of the heat-sinking capability of unable full play metal drain pan.
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 lamp plate and metal drain pan, the lamp plate includes lamp face and back, the back laminating has the soaking piece, the lamp plate with be equipped with porous metal piece between the metal drain pan.
As a further optimization, the metal bottom case further comprises a heat conducting graphite sheet, wherein the heat conducting graphite sheet surrounds the porous metal block, one surface of the heat conducting graphite sheet is in contact with the metal bottom case, and the other surface of the heat conducting graphite sheet is in contact with the soaking sheet.
Preferably, the heat conducting graphite sheet is a heat conducting graphite sheet with the thickness of 0.05-0.1mm and/or the thermal conductivity of 500-.
Preferably, the porous metal block is made of copper, aluminum or magnesium alloy.
Preferably, the porous metal block has a cellular, foam or grid form.
As a advanceOptimally, the porous metal block has the porosity of 50-98 percent and/or the volume density of 0.1-1g/cm3And/or a porous metal block having a thermal conductivity of 10W/(mK) or more.
As a further optimization, the porous metal block is compressed between the lamp panel and the metal bottom shell, and the compression amount is greater than or equal to 0.5 mm.
Preferably, the heat spreader is a multilayer composite graphite sheet, a copper foil sheet or a heat-conducting silica gel sheet.
Preferably, the heat equalizing sheet is a heat equalizing sheet with the thickness of 0.1-0.5mm and/or the longitudinal thermal conductivity of 5-30W/mk and/or the transverse thermal conductivity of 30-1500W/(m.K).
As a further optimization, the back of the lamp panel is tightly attached to the soaking plate by adopting insulating heat-conducting glue.
To sum up, the utility model discloses following beneficial effect has: the utility model discloses a heat conduction channel between the back of lamp plate and the metal drain pan is constructed to the mode of heat conduction graphite flake parcel porous metal piece, not only can reduce the difference in temperature of lamp face in the samming effect, and the outstanding heat conductivity of porous metal piece and heat conduction graphite flake can effectively take away the heat that the lamp plate produced, and the inside a large amount of hole grid structures of porous metal piece have also increased self heat radiating area, conduct the heat of lamp plate to intracavity air and metal drain pan effectively; in addition, compared with the traditional heat conducting medium, the medium has the advantages of easy disassembly and assembly, small specific gravity, high heat conducting efficiency, compressibility and the like, and is more suitable for the display equipment of the LED display screen which needs to be disassembled and assembled frequently.
Drawings
Fig. 1 is a schematic structural diagram of an LED display screen in the embodiment.
In the figure: 1. a lamp panel; 2. a metal bottom case; 3. a driver IC; 4. a soaking sheet; 5. a porous metal block; 6. a thermally conductive graphite sheet.
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.
The embodiment discloses an LED display screen, as shown in fig. 1, the LED display screen comprises a lamp panel 1 and a metal bottom case 2. The lamp panel 1 comprises a lamp surface and a back surface, a plurality of lamp beads are installed on the lamp surface, and a plurality of driving ICs 3 and other various electronic components are installed on the back surface. The back of lamp plate 1 is laminated with soaking piece 4, and soaking piece 4 accessible insulating heat conduction glue is closely laminated at the IC face. The heat equalizing sheet 4 is preferably a multilayer composite graphite sheet, a copper foil sheet or a thermally conductive silicone sheet, and the heat equalizing sheet 4 is preferably a heat equalizing sheet 4 having a thickness of 0.1 to 0.5mm (mm), a longitudinal thermal conductivity of 5 to 30W/(m.K) (W/m.degree) and a transverse thermal conductivity of 30 to 1500W/(m.K) (W/m.degree). In order to ensure larger contact area and heat conduction effect, the heat equalizing sheet 4 is hollowed out at the protruding positions of the lamp panel 1, such as a clamping groove, an electronic component and the like, and the rest parts of the heat equalizing sheet 4 are tightly attached to the surface of the drive IC3 and the exposed part of the lamp panel 1. A porous metal block 5 is compressed between the lamp panel 1 and the metal bottom case 2, and the compression amount of the porous metal block 5 is preferably greater than or equal to 0.5mm (millimeter). The lamp pearl of lamp face and the heat that electronic components at the back produced on lamp plate 1, via soaking piece 4 conduction to porous metal piece 5, porous metal piece 5 can be fast with heat conduction to intracavity air and metal drain pan 2 on to can control lamp plate 1's temperature effectively.
In this embodiment, as shown in fig. 1, a heat conductive graphite sheet 6 is attached to the surface of the porous metal block 5 around one circumference, the heat conductive graphite sheet 6 surrounds four sides of the porous metal block 5, and the remaining two sides of the porous metal block 5 are exposed for heat dissipation. 6 one sides of heat conduction graphite flake are laminated on the position corresponding to metal drain pan 2 through heat conduction glue, and the one side is laminated with soaking piece 4 on the IC face of lamp plate 1. The porous metal block 5 may be a large monolithic block or a plurality of relatively small blocks. The porous metal block 5 is preferably a porous metal block 5 made of copper, aluminum or magnesium alloy. The porous form of the porous metal block 5 is preferably a honeycomb, foam or mesh. The porous metal block 5 preferably has a porosity of 50 to 98% and a bulk density of 0.1 to 1g/cm3(g/cc) and thermal conductivityA porous metal block 5 having a ratio of 10W/(m.K) or more. The thermally conductive graphite sheet 6 is preferably a thermally conductive graphite sheet 6 having a thickness of 0.05 to 0.1mm and a thermal conductivity of 500-1500W/(m.K).
The LED display screen in this embodiment is when the assembly, adopt insulating heat conduction glue at the IC face of lamp plate 1 at first and closely laminate soaking piece 4, then surround a week at 5 surfaces of porous metal piece and laminate heat conduction graphite flake 6, 5 porous metal pieces that will laminate heat conduction graphite flake 6 laminate on metal drain pan 2 corresponds the position with heat conduction glue, and guarantee to wrap up 6 one sides of heat conduction graphite flake and the laminating of metal drain pan 2 of porous metal piece 5, the metal drain pan 2 that will laminate heat conduction graphite flake 6 and porous metal piece 5 at last is in the same place with lamp plate 1 installation, and guarantee that the another side of heat conduction graphite flake 6 laminates with soaking piece 4 on the IC face of lamp plate 1, porous metal piece 5 self is in the compression state. The utility model discloses a heat conduction graphite flake 6 wraps up the mode of porous metal piece 5 and constructs the heat conduction passageway between IC face and the metal drain pan 2 of lamp plate 1, not only can reduce the difference in temperature of the lamp face of lamp plate 1 to 5 by original 13 ℃ in the samming effect, reduce the average temperature of lamp face by 5 ℃, and the outstanding heat conductivity of porous metal piece 5 and heat conduction graphite flake 6 can effectively take away the heat that drive IC3 produced, the inside a large amount of hole grid structure of porous metal piece 5 has also increased the heat radiating area of self, conduct the heat of lamp plate 1 on intracavity air and metal drain pan 2 effectively. In addition, compared with the traditional heat conducting medium, the medium has the advantages of easy disassembly and assembly, small specific gravity, high heat conducting efficiency, compressibility and the like, and is more suitable for the display equipment of the LED display screen which needs to be disassembled and assembled frequently.
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 (9)
1. The utility model provides a LED display screen, includes lamp plate and metal drain pan, the lamp plate includes lamp face and the back, its characterized in that: the back surface is attached with a soaking piece, and a porous metal block is arranged between the lamp panel and the metal bottom shell; the porous metal block is arranged on the bottom shell, and the heat conducting graphite sheet is arranged on the bottom shell.
2. The LED display screen of claim 1, wherein: the heat conducting graphite sheet is 0.05-0.1mm thick and/or 500-1500W/(m.K) heat conductivity.
3. The LED display screen of claim 1, wherein: the porous metal block is made of copper, aluminum or magnesium alloy.
4. The LED display screen of claim 1, wherein: the porous metal block is in a honeycomb, foam or grid shape.
5. The LED display screen of claim 1, wherein: the porosity of the porous metal block is 50-98 percent and/or the volume density is 0.1-1g/cm3And/or a porous metal block having a thermal conductivity of 10W/(mK) or more.
6. The LED display screen of claim 1, wherein: the porous metal block compression is in the lamp plate with between the metal drain pan, and the compressive strain is more than or equal to 0.5 mm.
7. The LED display screen of claim 1, wherein: the heat equalizing sheet is a multilayer composite graphite sheet, a copper foil sheet or a heat-conducting silicon sheet.
8. The LED display screen of claim 1, wherein: the heat equalizing sheet is 0.1-0.5mm thick and/or 5-30W/mk longitudinal thermal conductivity and/or 30-1500W/(m.K) transverse thermal conductivity.
9. The LED display screen of claim 1, wherein: the back of the lamp panel is tightly attached to the soaking plate by insulating heat-conducting glue.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922407381.6U CN211237605U (en) | 2019-12-27 | 2019-12-27 | LED display screen |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922407381.6U CN211237605U (en) | 2019-12-27 | 2019-12-27 | LED display screen |
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| Publication Number | Publication Date |
|---|---|
| CN211237605U true CN211237605U (en) | 2020-08-11 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201922407381.6U Active CN211237605U (en) | 2019-12-27 | 2019-12-27 | LED display screen |
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| Country | Link |
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| CN (1) | CN211237605U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112382232A (en) * | 2020-11-26 | 2021-02-19 | 深圳市洲明科技股份有限公司 | LED driving device and LED display screen |
-
2019
- 2019-12-27 CN CN201922407381.6U patent/CN211237605U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112382232A (en) * | 2020-11-26 | 2021-02-19 | 深圳市洲明科技股份有限公司 | LED driving device and LED display screen |
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