CN106340256B - Active heat dissipation type LED display screen panel - Google Patents
Active heat dissipation type LED display screen panel Download PDFInfo
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- CN106340256B CN106340256B CN201610937340.6A CN201610937340A CN106340256B CN 106340256 B CN106340256 B CN 106340256B CN 201610937340 A CN201610937340 A CN 201610937340A CN 106340256 B CN106340256 B CN 106340256B
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
- F21V29/00—Protecting lighting devices from thermal damage; Cooling or heating arrangements specially adapted for lighting devices or systems
- F21V29/50—Cooling arrangements
- F21V29/502—Cooling arrangements characterised by the adaptation for cooling of specific components
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
- F21V29/00—Protecting lighting devices from thermal damage; Cooling or heating arrangements specially adapted for lighting devices or systems
- F21V29/85—Protecting lighting devices from thermal damage; Cooling or heating arrangements specially adapted for lighting devices or systems characterised by the material
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09F—DISPLAYING; ADVERTISING; SIGNS; LABELS OR NAME-PLATES; SEALS
- G09F9/00—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements
- G09F9/30—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements in which the desired character or characters are formed by combining individual elements
- G09F9/33—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements in which the desired character or characters are formed by combining individual elements being semiconductor devices, e.g. diodes
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- Illuminated Signs And Luminous Advertising (AREA)
- Devices For Indicating Variable Information By Combining Individual Elements (AREA)
- Arrangement Of Elements, Cooling, Sealing, Or The Like Of Lighting Devices (AREA)
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Abstract
The invention discloses an active heat dissipation type LED display screen panel which comprises an LED lamp panel, a power supply and a mask, wherein a driving IC, an LED lamp bead and a driving circuit are arranged on the LED lamp panel, the active heat dissipation type LED display screen panel also comprises a substrate made of heat dissipation materials, a frame is arranged on the substrate, the LED lamp panel is arranged on the frame, the power supply is arranged on the back surface of the substrate, the mask is arranged on one surface, back to the substrate, of the LED lamp panel, and the driving IC on the LED lamp panel is in direct contact with the substrate or is connected with the substrate through a first heat conduction part. The active heat dissipation type LED display screen panel has the advantages of simple and compact structure, good heat dissipation performance, low manufacturing and operating cost and the like.
Description
Technical Field
The invention relates to the technical field of photoelectric display, in particular to an active heat dissipation type LED display screen panel.
Background
The module is formed by PCB, lamp, drain pan, electronic components etc. earlier to current LED display screen panel many, then constitutes the box by the module, constitutes whole display screen with a plurality of boxes again. Modules of a plurality of manufacturers are made into waterproof boxes, and the boxes are also made into waterproof boxes, so that the waterproof box is waterproof overall. And along with the development of SMD lamp technique, the waterproof performance and the luminance of SMD lamp have all been improved very much, and outdoor SMD display screen has taken the great advantage in recent years, has replaced the market of original outdoor DIP lamp soon, has become the leading position in market, and SMD production speed is fast, and is stable, will become the direction in market now and in the future. However, along with the increasing scale and mass production of the market, the market competition is more and more intense, and a plurality of manufacturers are reducing the cost, especially lamp manufacturers are reducing the chip size, so that the brightness of the SMD is reduced to a great extent, if the brightness of the original display screen is reached, the driving current of the SMD needs to be increased, so that the driving current of the IC is increased, the power supply power is increased, the heat increase of the lamp and the IC directly leads to the increase of the heat of the module, because most of the manufacturers are plastic bottom shells, the heat cannot be dissipated, the heat of the module is high, so that the faults and the service life of an electronic device are short, especially, the lamps of the SMD lead to the weakening of the lighting effect and the reduction of the service life along with the increase of the temperature, and the service life of the power supply is reduced and the faults are increased due to the increase of the heat of the power supply.
Disclosure of Invention
The invention aims to overcome the defects in the prior art and provide the active heat dissipation type LED display screen panel which is simple and compact in structure, good in heat dissipation performance and low in manufacturing and running cost.
In order to solve the technical problem, the invention adopts the following technical scheme:
the utility model provides an initiative heat dissipation formula LED display screen panel, includes LED lamp plate, power and face guard, be equipped with drive IC, LED lamp pearl and drive circuit on the LED lamp plate, still include the base plate of heat dissipation material preparation, the frame is installed in the front of base plate, the LED lamp plate is installed on the frame, the back at the base plate is installed to the power, the one side of LED lamp plate base plate dorsad is located to the face guard cover, drive IC on the LED lamp plate meets with the base plate through first heat-conducting component with base plate direct contact or.
Foretell initiative heat dissipation formula LED display screen panel, it is preferred, border and base plate sealing connection around the LED lamp plate, the one side that the LED lamp plate is the base plate dorsad covers there is the waterproof glue.
Foretell initiative heat dissipation formula LED display screen panel, it is preferred, the frame is equipped with an annular frame, annular frame is equipped with the first annular boss at cladding base plate border all around and the second annular boss at cladding LED lamp plate border all around, first annular boss and base plate border all around second annular boss and LED lamp plate border all around through sealed glue sealing connection.
Preferably, the LED lamp panel is formed by splicing a plurality of small LED lamp panels, and the mask is formed by splicing a plurality of small masks; the back of the base plate is provided with a plurality of screw mounting holes and/or a plurality of connecting sheets.
In the above active heat dissipation LED display panel, preferably, a waterproof box is disposed on the back of the substrate, and the power supply is installed in the waterproof box.
The above active heat dissipation type LED display screen panel is preferably configured such that the waterproof case includes a case body having an opening and a rear cover plate detachably connected to the case body and sealing the opening, the rear cover plate is made of a heat dissipation material, the power supply is in direct contact with the rear cover plate or is connected to the rear cover plate through a second heat conduction member, and an insulating and heat insulating member is provided between the power supply and the base plate.
Foretell initiative heat dissipation formula LED display screen panel, it is preferred, first heat-conducting component is the heat dissipation silica gel layer of rigid coupling between LED lamp plate and base plate, second heat-conducting component is the heat dissipation silica gel layer of rigid coupling between power and back shroud.
In the active heat dissipation type LED display screen panel, preferably, the substrate and the back cover plate are metal plates; the box is including the tube-shape shell that has the perforating hole, the both ends of tube-shape shell are connected with base plate and back shroud through the fastener respectively, and all are equipped with waterproof sealing washer between tube-shape shell and the base plate, between tube-shape shell and the back shroud.
In the active heat dissipation type LED display screen panel, preferably, the rear cover plate is provided with a holding handle; the box body is also provided with four mounting holes, wherein power lines are arranged in two of the mounting holes in a penetrating manner, and signal lines are arranged in the other two mounting holes in a penetrating manner.
Foretell initiative heat dissipation formula LED display screen panel, it is preferred, initiative heat dissipation formula LED display screen panel is still including the control card that is used for receiving the direct current of data signal and power, the control card is installed in the waterproof box, the control card passes through joint Assembly and links to each other with the LED lamp plate, the base plate is equipped with the through-hole that supplies joint Assembly to pass.
Compared with the prior art, the invention has the advantages that: in the active heat dissipation type LED display screen panel, the driving IC11 on the LED lamp panel is directly contacted with the substrate or is connected with the substrate through the first heat conducting part, and the generated heat can be conducted and dissipated to the external environment through the substrate made of the heat dissipation material, so that the independent heat dissipation is realized, active heat dissipation parts such as a fan and the like are not required to be arranged, the space can be saved, and the manufacturing and running cost can be reduced; simultaneously, compare in traditional LED display screen panel, this initiative heat dissipation formula LED display screen panel does not have the notion of module, does not need box structure and drain pan etc. and its structure is simple compactness more, still can design the whole thickness of panel littleer, is convenient for assemble and obtains curved LED display screen.
Drawings
Fig. 1 is an exploded view of an active heat dissipation LED display panel.
Fig. 2 is a schematic top view of an active heat dissipation LED display panel.
Fig. 3 is a schematic rear view of an active heat dissipation LED display panel.
Fig. 4 is an enlarged sectional view taken along line a-a in fig. 3.
Fig. 5 is an enlarged view of fig. 4 at B.
Illustration of the drawings:
1. an LED lamp panel; 11. a driver IC; 2. a power source; 3. a face mask; 4. a substrate; 41. a screw mounting hole; 5. a frame; 51. an annular rim; 511. a first annular boss; 512. a second annular boss; 6. a waterproof box; 61. a box body; 62. a rear cover plate; 621. a grip handle; 63. a waterproof sealing ring; 7. a power line; 8. a signal line; 9. and controlling the card.
Detailed Description
The invention is described in further detail below with reference to the figures and the specific embodiments.
As shown in fig. 1 to 3, the active heat dissipation type LED display screen panel of the present embodiment includes a LED lamp panel 1, a power supply 2, a substrate 4 made of a mask 3 and a heat dissipation material, a plurality of LED lamp beads are welded on the front surface of the LED lamp panel 1, a driving IC11 and a driving circuit are welded on the back surface of the LED lamp panel 1, a frame 5 is installed on the front surface of the substrate 4, the LED lamp panel 1 is installed on the front surface of the frame 5, the power supply 2 is installed on the back surface of the substrate 4, the mask 3 covers the surface of the LED lamp panel 1 facing away from the substrate 4, and the driving IC11 on the LED lamp panel 1 is in direct contact with the substrate 4 or is connected with the substrate 4 through a first heat conduction component. In the active heat dissipation type LED display screen panel, the driving IC11 on the LED lamp panel 1 is directly contacted with the substrate 4 or is connected with the substrate 4 through the first heat conducting part, and the generated heat can be conducted through the substrate 4 made of the heat dissipation material and dissipated to the external environment, so that the independent heat dissipation is realized, active heat dissipation parts such as a fan and the like are not required to be arranged, the space can be saved, and the manufacturing and operating cost can be reduced; simultaneously, compare in traditional LED display screen panel, this initiative heat dissipation formula LED display screen panel does not have the notion of module, does not need box structure and drain pan etc. and its structure is simple more compact, still can design littleer with the whole thickness of panel, is convenient for assemble and obtains curved LED display screen, makes LED display screen panel's application environment wider, installation and use more convenient, the cost is lower.
In this embodiment, border and 4 sealing connection of base plate around the LED lamp plate 1, the one side that LED lamp plate 1 dorsad base plate 4 covers has the waterproof glue, realizes good sealed and waterproof, and its waterproof grade is IP66. Preferably, as shown in fig. 4 and 5, the frame 5 is fixedly connected with the substrate 4 through a plurality of screws, a plurality of holes are formed in the frame 5, the driving IC11 is used for penetrating through the substrate 4 to contact with the substrate for heat conduction, the frame 5 is provided with an annular frame 51, the annular frame 51 is provided with a first annular boss 511 covering the periphery of the substrate 4 and a second annular boss 512 covering the periphery of the LED lamp panel 1, the first annular boss 511 and the periphery of the substrate 4 are connected with the second annular boss 512 and the periphery of the LED lamp panel 1 through sealant in a sealing manner, and the sealing structure can greatly improve the overall sealing performance of the panel.
In this embodiment, LED lamp plate 1 is formed by the concatenation of the little lamp plate of polylith LED, and face guard 3 is formed by the concatenation of a plurality of little face guards, and each little face guard passes through the screw and is fixed with LED lamp plate 1. The back of base plate 4 is equipped with four screw mounting holes 41 and a plurality of connection piece, and four corner positions department at the panel back are located to four screw mounting holes 41 branch, are convenient for adopt the screw installation panel, and four screw mounting holes 41 can be suitable for the preceding mounting means and the back mounting means of panel, and accurate positioning when being convenient for install does benefit to the standardization of bearing structure, accessory etc..
In this embodiment, the waterproof case 6 is provided on the back surface of the substrate 4, and the power supply 2 is mounted in the waterproof case 6, thereby providing a good sealing and waterproof function for the power supply 2. Waterproof box 6 is including having open-ended box 61 and can dismantle to connect on box 61 and with the back shroud 62 that the opening is sealed, back shroud 62 is the board of heat sink material preparation, power 2 meets with back shroud 62 direct contact or through second heat-conducting component and back shroud 62, external environment is gived off in the heat accessible back shroud 62 conduction of power 2, thereby under the condition that need not set up active heat dissipation parts such as fan, can form good heat dissipation, the heat dissipation problem of power 2 has effectively been solved, can further reduce preparation and running cost. Be equipped with insulating heat insulation part between power 2 and the base plate 4, insulating heat insulation part adopts current insulating heat insulation material to make, and it is used for preventing the heat conduction of power 2 production to base plate 4, avoids influencing the work of LED lamp plate 1.
The box body 61 comprises a cylindrical shell with a through hole, two ends of the cylindrical shell are respectively connected with the substrate 4 and the rear cover plate 62 through fasteners, and waterproof sealing rings 63 are arranged between the cylindrical shell and the substrate 4 and between the cylindrical shell and the rear cover plate 62, so that a good sealing and waterproof effect is achieved. The cylindrical shell is made of aluminum, so that the whole heat dissipation effect of the waterproof box 6 is better, and the bending strength of the base plate 4 can be improved through the matching of the aluminum cylindrical shell and the base plate 4.
The first heat conduction part of this embodiment is the heat dissipation silica gel layer of rigid coupling between LED lamp plate 1 and base plate 4, and the second heat conduction part is the heat dissipation silica gel layer of rigid coupling between power 2 and back shroud 62.
In the present embodiment, the base plate 4 and the rear cover plate 62 are metal plates, and preferably, aluminum plates are used. The aluminum plate structure can be directly connected with the ground, so that the electromagnetic radiation problem of the whole panel can be comprehensively reduced, and the direct coupling problem and the EMC resistance problem of a circuit are solved; and the intensity and the roughness of whole panel have all obtained very big promotion, have solved the problem and the size expend with heat and contract with cold problem of the display screen roughness that the module warp the production.
The conventional LED display screen panel has a non-uniform temperature, for example, the temperature near the power source is higher, the temperature near the fan is lower, and because the efficiency of the LED and other electronic components is different at different operating temperatures, the temperature difference causes the LED luminous efficiency to be different in various places, for example, the LED luminous efficiency is reduced due to the temperature rise, so that the luminance and chromaticity of some places of the LED display screen panel are different, which is a problem that LED display screen manufacturers in the industry need to face. The substrate 4 of the invention adopts a form of a whole aluminum plate, the aluminum plate has fast heat conduction, the heat balance of the whole display screen panel can be ensured, the condition that the local temperature of the panel is too high or too low can not occur, the temperature difference of the test of each point of the panel is smaller than 10 percent, and the balanced temperature can ensure the LED luminous efficiency of the whole panel to be consistent, thereby ensuring the consistency of the brightness and the chromaticity. And, 4 hardness height of the base plate of monoblock aluminum plate form, guaranteed the roughness of base plate 4 and whole panel, because 4 roughness height of base plate, the frame 5 of fixing on base plate 4 and the roughness of LED lamp plate 1 are also high. By adopting the screw holes with higher density and reasonable arrangement, the flatness of the face shield 3 attached to the LED lamp panel 1 can be ensured to be good.
In this embodiment, the rear cover plate 62 is provided with a holding handle 621; the box body 61 is further provided with four mounting holes, the power lines 7 are installed in two of the mounting holes in a penetrating mode, the signal lines 8 are installed in the other two mounting holes in a penetrating mode, the power lines 7 and the signal lines 8 are separated, and the box body has the advantages of being small in interference and high in interference resistance.
In this embodiment, the active heat dissipation type LED display screen panel further includes a control card 9, the control card 9 is used for receiving a data signal of a computer and a direct current of the power supply 2, the control card 9 is installed in the waterproof box 6, the control card 9 is connected with the LED lamp panel 1 through a connector assembly, preferably, the connector assembly of the LED lamp panel 1 is directly connected to a connector assembly of the LED lamp panel 1 through a male-female extension socket, and the substrate 4 is provided with a through hole for the connector assembly to pass through. The modular design reduces the number of signals and power connectors inside the panel, facilitates maintenance, reduces problems, and improves stability.
In this embodiment, the housing of the power source 2 is connected to the ground, and the housing of the power source 2, the rear cover plate 62, the box 61 and the substrate 4 are conducted with each other, so that the static electricity and the electric leakage of the LED display panel can be eliminated, and the safety of the whole LED display panel is higher.
The active heat dissipation type LED display screen panel is designed into a single-panel single-card independent design scheme, is simple to connect, is convenient to control, and can conveniently realize color and brightness adjustment and various intelligent detections (power supply 2, heat and various faults).
The above description is only a preferred embodiment of the present invention, and the scope of the present invention is not limited to the above-described examples. Modifications and variations that may occur to those skilled in the art without departing from the spirit and scope of the invention are to be considered as within the scope of the invention.
Claims (9)
1. The utility model provides an initiative heat dissipation formula LED display screen panel, includes LED lamp plate (1), power (2) and face guard (3), be equipped with driver IC (11), LED lamp pearl and drive circuit on LED lamp plate (1), its characterized in that: the LED lamp panel is characterized by further comprising a substrate (4) made of a heat dissipation material, wherein a frame (5) is installed on the front face of the substrate (4), the LED lamp panel (1) is installed on the frame (5), the power supply (2) is installed on the back face of the substrate (4), the face shield (3) covers one face, back to the substrate (4), of the LED lamp panel (1), and a driving IC (11) on the LED lamp panel (1) is in direct contact with the substrate (4) or is connected with the substrate (4) through a first heat conduction part;
base plate (4) are the monoblock flat board, frame (5) are equipped with an annular frame (51), annular frame (51) are equipped with first annular boss (511) and second annular boss (512) of cladding LED lamp plate (1) border on all around in border around cladding base plate (4), first annular boss (511) and base plate (4) border on all around second annular boss (512) and LED lamp plate (1) border on all around all through sealed glue sealing connection.
2. The active heat dissipation LED display screen panel of claim 1, wherein: the LED lamp panel is characterized in that the edges of the periphery of the LED lamp panel (1) are in sealing connection with the base plate (4), and waterproof glue covers the surface, back to the base plate (4), of the LED lamp panel (1).
3. The active heat dissipation LED display screen panel of claim 1, wherein: the LED lamp panel (1) is formed by splicing a plurality of small LED lamp panels, and the face shield (3) is formed by splicing a plurality of small face shields; the back surface of the base plate (4) is provided with a plurality of screw mounting holes (41) and/or a plurality of connecting sheets.
4. The active heat-dissipating LED display panel according to any one of claims 1 to 3, wherein: the back of base plate (4) is equipped with waterproof box (6), power (2) are installed in waterproof box (6).
5. The active heat-dissipating LED display screen panel of claim 4, wherein: the waterproof box (6) comprises a box body (61) with an opening and a rear cover plate (62) which is detachably connected to the box body (61) and seals the opening, the rear cover plate (62) is a plate made of a heat dissipation material, the power supply (2) is in direct contact with the rear cover plate (62) or is connected with the rear cover plate (62) through a second heat conduction component, and an insulating and heat-insulating part is arranged between the power supply (2) and the substrate (4).
6. The active heat dissipation LED display screen panel of claim 5, wherein: the LED lamp panel is characterized in that the first heat conducting part is a heat dissipation silica gel layer fixedly connected between the LED lamp panel (1) and the base plate (4), and the second heat conducting part is a heat dissipation silica gel layer fixedly connected between the power supply (2) and the rear cover plate (62).
7. The active heat dissipation LED display screen panel of claim 5, wherein: the base plate (4) and the rear cover plate (62) are metal plates; the box (61) comprises a cylindrical shell with a through hole, two ends of the cylindrical shell are connected with the base plate (4) and the rear cover plate (62) through fasteners respectively, and waterproof sealing rings (63) are arranged between the cylindrical shell and the base plate (4) and between the cylindrical shell and the rear cover plate (62).
8. The active heat dissipation LED display screen panel of claim 5, wherein: a holding handle (621) is arranged on the rear cover plate (62); the box body (61) is further provided with four mounting holes, wherein power lines (7) are arranged in two of the mounting holes in a penetrating mode, and signal lines (8) are arranged in the other two mounting holes in a penetrating mode.
9. The active heat dissipation LED display screen panel of claim 4, wherein: initiative heat dissipation formula LED display screen panel is still including control card (9) that are used for receiving the direct current of data signal and power (2), install in waterproof box (6) control card (9), control card (9) link to each other with LED lamp plate (1) through joint Assembly, base plate (4) are equipped with the through-hole that supplies joint Assembly to pass.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610937340.6A CN106340256B (en) | 2016-10-25 | 2016-10-25 | Active heat dissipation type LED display screen panel |
| PCT/CN2016/105088 WO2018076396A1 (en) | 2016-10-25 | 2016-11-08 | Active heat dissipation type led display screen panel |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610937340.6A CN106340256B (en) | 2016-10-25 | 2016-10-25 | Active heat dissipation type LED display screen panel |
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| Publication Number | Publication Date |
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| CN106340256A CN106340256A (en) | 2017-01-18 |
| CN106340256B true CN106340256B (en) | 2022-12-16 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201610937340.6A Active CN106340256B (en) | 2016-10-25 | 2016-10-25 | Active heat dissipation type LED display screen panel |
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| CN (1) | CN106340256B (en) |
| WO (1) | WO2018076396A1 (en) |
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| CN108898969B (en) * | 2018-08-27 | 2024-01-30 | 利亚德电视技术有限公司 | Display screen |
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| WO2018076396A1 (en) | 2018-05-03 |
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