CN104992633A - LED electronic display screen circuit board waterproof method and display module - Google Patents
LED electronic display screen circuit board waterproof method and display module Download PDFInfo
- Publication number
- CN104992633A CN104992633A CN201510241261.7A CN201510241261A CN104992633A CN 104992633 A CN104992633 A CN 104992633A CN 201510241261 A CN201510241261 A CN 201510241261A CN 104992633 A CN104992633 A CN 104992633A
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- Prior art keywords
- circuit board
- led circuit
- led
- uncovered
- drain pan
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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
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K5/00—Casings, cabinets or drawers for electric apparatus
- H05K5/06—Hermetically-sealed casings
- H05K5/064—Hermetically-sealed casings sealed by potting, e.g. waterproof resin poured in a rigid casing
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- Engineering & Computer Science (AREA)
- Devices For Indicating Variable Information By Combining Individual Elements (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Theoretical Computer Science (AREA)
Abstract
The invention relates to an LED electronic display screen circuit board waterproof method and a display module. The display module comprises a bottom case, a face shield and an LED circuit board, the LED circuit board is installed on the front surface of the bottom case, and waterproof glue is poured into the front surface of the LED circuit board. In order to prevent rainwater from entering the back side of the bottom case, the inner side of a framework of the bottom case is provided with a base plate, positions, of the base plate, corresponding to the a signal port and a power supply port of the LED circuit board are provided with a first pass-through opening and a second pass-through opening, when the LED circuit board is installed on the bottom case, the signal port and the power supply port pass through the pass-through openings, and waterproof glue is poured into the periphery of the signal port and the power supply port, thus, the back side of the display module is waterproof, in order to ensure that a driving integrated circuit on the LED circuit board maintains a good heat dissipation effect, the position, of the base plate, corresponding to the driving integrated circuit on the LED circuit board is provided with a heat dissipation block, and the driving integrated circuit on the LED circuit board clings to the inner surface of the heat dissipation block. Compared with the existing products, the display module is advantaged in that a waterproof aim is reached, and the heat dissipation problem is solved.
Description
Technical field
The present invention relates to the sub-display screen field of LED electrical, particularly relate to circuit board waterproof method and the display unit module of the sub-display screen of a kind of LED electrical.
Background technology
Outdoor LED display screen integrates microelectric technique, computer technology, information processing,, the advantage such as dynamic range wide, brightness high, operating voltage low, power consumption little, life-span long, shock-resistant, beautiful in colour and working stability reliable bright in luster with it, becomes the outdoor large display media of new generation of most advantage.
Outdoor LED electronic display is made up of a large amount of light emitting diodes and electronic component, its waterproof and dustproof, the anticorrosion important technical links becoming outdoor LED electronic display, and usual classification of waterproof requires to reach IP65.Showing in the product, the display module of the sub-display screen of LED electrical does not adopt waterproof measure, but display module is installed in a kind of waterproof box body, or be arranged on a kind of totally-enclosed screen body support frame, like this, not only casing manufacture difficulty is large, installation cost is high, and installation volume is huge, affects outward appearance.
Summary of the invention
For overcoming above-mentioned technological deficiency, the technical problem to be solved in the present invention provides the circuit board waterproof method of a kind of portable construction, good, the easy making of heat radiation, the sub-display screen of LED electrical easy for installation.
For overcoming above-mentioned technological deficiency, the technical problem to be solved in the present invention provides the display unit module of a kind of portable construction, good, the easy making of heat radiation, the sub-display screen of LED electrical easy for installation.
From the circuit board waterproof method of the sub-display screen of LED electrical, its step comprises: the display unit module be made up of drain pan, face shield and LED circuit board; (this is the common composing method of display unit module of the sub-display screen of existing LED electrical), is provided with framework in drain pan surrounding, is provided with framework in drain pan surrounding, and establish for fixed visors and LED circuit board connecting structure on framework; Be provided with circuit board protruding forward in the outer of the framework surrounding of drain pan and protect edge; Be provided with LED lamp tube in LED circuit board front, the back side is provided with signal port, power port and drive integrated circult; The circuit board that this LED circuit board is arranged on drain pan protects in edge, and at LED circuit board front perfusion marine glue; These methods are the circuit board front waterproof method of the sub-display screen of LED electrical known in the art.In order to prevent rainwater from entering from the drain pan back side, inside the framework of drain pan, be provided with base plate, and be provided with at the signal port of this base plate and LED circuit board and power port corresponding position first penetrating uncovered and second penetrating uncovered; When signal port and power port first penetrating uncovered and second penetrating uncovered, at signal port and power port periphery perfusion marine glue; Like this, back of circuit board also serves waterproofing protection effect.
As the further improvement of the circuit board waterproof method of the sub-display screen of LED electrical of the present invention, at base plate and LED circuit board drive integrated circult corresponding position, radiating block is set, this method, the working temperature of drive integrated circult can be reduced.
Said method, can not only carry out two-sided protection to the circuit board of the sub-display screen of LED electrical, and solve heat dissipation problem by radiating block.
From the display unit module of the sub-display screen of LED electrical, this display unit module comprises: drain pan, face shield and LED circuit board; Be provided with framework in drain pan surrounding, framework established for fixed visors and LED circuit board connecting structure, be provided with circuit board protruding forward in the outer of the framework surrounding of drain pan and protect edge; Be provided with LED lamp tube in LED circuit board front, be provided with signal port, power port and drive integrated circult at the LED circuit board back side, the circuit board that this LED circuit board is arranged on described drain pan protects in edge, and at LED circuit board front perfusion marine glue; This structure is the display unit module waterproof construction of the sub-display screen of existing LED electrical, like this, can achieve waterproof requirement in the front of display unit module.Enter from the drain pan back side to prevent rainwater, base plate is provided with inside the framework of drain pan, the signal port of this base plate and LED circuit board and power port corresponding position are provided with first penetrating uncovered and second penetrating uncovered, when LED circuit board is arranged on drain pan, signal port and power port are penetrating uncovered and second penetrating uncovered through first, and pour into marine glue at signal port and power port periphery.This structure, has also carried out water-proofing treatment at the back side of display unit module.
As the further improvement of the display unit module of the sub-display screen of LED electrical of the present invention, guarantee that in LED circuit board, drive integrated circult keeps good radiating effect, the position corresponding with LED circuit board drive integrated circult at base plate is provided with radiating block; Drive integrated circult in LED circuit board is close to the medial surface of radiating block.
As the sub-display screen of LED electrical of the present invention display unit module described in a kind of preferred version of radiating block, radiating fin is provided with outside this radiating block, distributed by heat by this radiating fin, like this, the heat that can reduce drive integrated circult distributes by this radiating block.
As the sub-display screen of LED electrical of the present invention display unit module described in the another kind of preferred version of radiating block, being provided with outside this radiating block is a kind of burnishing surface, by this burnishing surface, temperature is passed to other thermal component (as heat radiation box, cooling stand, heat sink etc.); This structure, needs casing or the Special mounting bracket of cooperation, and heat radiation can be faster, and radiating effect is better.
A kind of preferred version that radiating block is installed on base plate is: be provided with the 3rd thoroughly uncovered at base plate and drive integrated circult corresponding position, and heating radiator is arranged on the 3rd thoroughly uncovered, and thoroughly uncoveredly pours into marine glue with heating radiator seam crossing the 3rd.It is convenient so not only to install, and can prevent the periphery of rainwater radiating block from entering display unit inside modules.
Radiating block is mounted to the another kind of preferred version on base plate, radiating block can be imbedded base plate and drive integrated circult corresponding position, and one-body molded with base plate; Like this, drain pan manufacture can increase operation, but can be convenient in display unit modular manufacture, enhance productivity.
As the further improvement of the display unit module of the sub-display screen of LED electrical of the present invention, circuit board LED circuit board being arranged on drain pan protects in edge, the electronic component height that the distance between the framework of LED circuit board and drain pan and base plate should be installed a little more than the LED circuit board back side; Like this, not only to LED circuit board, a space of installing is installed, can also prevents drain pan humidity from causing LED circuit board to leak electricity or short circuit phenomenon.Meanwhile, first penetrating uncovered and the second penetrating uncovered surrounding be respectively equipped with to LED circuit board direction projection and edge is penetratingly uncoveredly protected in the first penetrating uncovered edge and second of protecting pressing close to LED circuit board.Like this, when signal port and power port periphery perfusion marine glue, can prevent marine glue from flowing into display unit inside modules.
Compared with existing product, the circuit board waterproof method of the sub-display screen of LED electrical provided by the invention and the technical scheme of display unit module, drain pan arranges a kind of base plate for LED circuit board back side waterproof, and the saturating uncovered middle perfusion marine glue on base plate, solve the back side water inlet problem of display unit module, also be provided with radiating block at the position that LED circuit board drive integrated circult is corresponding, ensure that the heat dissipation problem of LED circuit board.
Accompanying drawing explanation
The invention will be further described with reference to the accompanying drawings below.Accompanying drawing is only understands the present invention better, should not become limitation of the present invention:
Fig. 1 is the display unit module front schematic view of the sub-display screen of LED electrical of the present invention;
Fig. 2 is the A-A end view drawing in Fig. 1 of the present invention;
Fig. 3 is the B-B end view drawing in Fig. 1 of the present invention;
Fig. 4 is a kind of schematic rear view of the display unit module of the sub-display screen of LED electrical of the present invention;
Fig. 5 is the C-C sectional view in Fig. 5 of the present invention;
Fig. 6 is the D-D sectional view in Fig. 5 of the present invention;
Fig. 7 is the another kind of schematic rear view of the display unit module of the sub-display screen of LED electrical of the present invention;
Fig. 8 is the E-E sectional view in Fig. 8 of the present invention;
Fig. 9 is the F-F sectional view in Fig. 8 of the present invention;
Embodiment
Just contrast accompanying drawing below, specific embodiment of the invention is described.
As Fig. 1 to Fig. 9 is known, the display unit module of the sub-display screen of LED electrical, it comprises: drain pan 1, face shield 2 and LED circuit board 3; Also can find out from Fig. 4 to Fig. 9, be provided with framework 11 in drain pan 1 surrounding, establish for fixed visors 2 and LED circuit board 3 connecting structure on the frame 11; The outer of framework 11 surrounding of drain pan 1 is provided with circuit board protruding forward and protects along 12; LED circuit board 3 front is provided with LED lamp tube 31, and LED circuit board 3 back side is provided with signal port 32, power port 33 and drive integrated circult 34; The circuit board that LED circuit board 3 is arranged on drain pan 1 protects along in 12 and at LED circuit board 3 front perfusion marine glue; Waterproof requirement is achieved like this in the front of display unit module.More than be the display unit module of the sub-display screen of LED electrical known in the art, be therefore not described in detail.
As Fig. 4 to Fig. 9 is known, inside the framework 11 of drain pan 1, be provided with base plate 13; First penetrating uncovered 14 and second penetrating uncovered 16 is provided with at the signal port 32 of base plate (13) and LED circuit board 3 and power port 33 corresponding position; Signal port 31 and power port 32 through first penetrating uncovered 14 and second penetrating uncovered 16, and pour into marine glue (not shown) at signal port 32 and power port 33 periphery.
As known in Fig. 4 to Fig. 7 and Fig. 9, base plate 13 and LED circuit board 3 drive integrated circult 34 corresponding position are provided with radiating block 4; Drive integrated circult 34 in LED circuit board 3 is close to the medial surface 41 of radiating block 4, for improving heat conductivility, can coat heat-conducting glue between integrated circuit 34 and radiating block 4.
A kind of preferred version being radiating block as Fig. 4, Fig. 5 is outside radiating block 4, be provided with radiating fin 42.
As the another kind of preferred version that Fig. 6, Fig. 7 are radiating blocks, be burnishing surface 43 outside radiating block 4, by this burnishing surface 43, temperature passed to other thermal component.
As known in Fig. 4 to Fig. 7 and Fig. 9, radiating block is installed on base plate, can be provided with the 3rd thoroughly uncovered 18 on base 13 with drive integrated circult 34 corresponding position, heating radiator 4 is arranged on the 3rd thoroughly uncovered 18, and thoroughly uncovered 18 pours into marine glue with heating radiator 4 seam crossing the 3rd.Can also Shooting Technique be passed through, radiating block be imbedded drain pan shaping together.
As Fig. 5 and Fig. 7 to Fig. 9 is known, LED circuit board 3 is installed on drain pan 1, the electronic component height that the distance between the framework 11 of LED circuit board 3 and drain pan 1 and base plate 13 is installed a little more than LED circuit board 3 back side.
As Fig. 5, Fig. 7, Fig. 8 are known, the first penetrating uncovered 14 and second penetrating surrounding of uncovered 16 be respectively equipped with to LED circuit board 3 direction projection and first penetrating uncovered the protecting of pressing close to LED circuit board 3 penetratingly uncoveredly to protect along 17 along 15 and second.
During fabrication, drain pan 1, face shield 2 are plastic material, and radiating block 4 can be adopted and be made of aluminum or copper.
Claims (10)
- The circuit board waterproof method of 1.LED electronic display, its step comprises:The display unit module be made up of drain pan (1), face shield (2) and LED circuit board (3);Be provided with framework (11) in described drain pan (1) surrounding, and establish for fixed visors (2) and LED circuit board (3) connecting structure on framework (11);Being provided with circuit board protruding forward in the outer of framework (11) surrounding of described drain pan (1) protects along (12);Be provided with LED lamp tube (31) in described LED circuit board (3) front, described LED circuit board (3) back side is provided with signal port (32), power port (33) and drive integrated circult (34);The circuit board that described LED circuit board (3) is arranged on described drain pan (1) protects in (12), and at LED circuit board (3) front perfusion marine glue;It is characterized in that:Framework (11) inner side in described drain pan (1) is provided with base plate (13), and signal port (32) in this base plate (13) and described LED circuit board (3) and position corresponding to power port (33) are provided with first penetrating uncovered (14) and second penetrating uncovered (16);Described signal port (31) and power port (32), through described first penetrating uncovered (14) and second penetrating uncovered (16), pour into marine glue at signal port (32) and power port (33) periphery.
- 2. the circuit board waterproof method of the sub-display screen of LED electrical according to claim 1, is characterized in that:Radiating block (4) is provided with at described base plate (13) and described LED circuit board (3) drive integrated circult (34) corresponding position.
- The display unit module of 3.LED electronic display, comprising: drain pan (1), face shield (2) and LED circuit board (3);Described drain pan (1) surrounding is provided with framework (11), framework (11) is established for fixed visors (2) and LED circuit board (3) connecting structure;The outer of framework (11) surrounding of described drain pan (1) is provided with circuit board protruding forward and protects along (12);Described LED circuit board (3) front is provided with LED lamp tube (31), and described LED circuit board (3) back side is provided with signal port (32), power port (33) and drive integrated circult (34);The circuit board that described LED circuit board (3) is arranged on described drain pan (1) to protect in (12) and at LED circuit board (3) front perfusion marine glue;It is characterized in that:Framework (11) inner side of described drain pan (1) is provided with base plate (13);Signal port (32) and power port (33) corresponding position of described base plate (13) and described LED circuit board (3) are provided with first penetrating uncovered (14) and second penetrating uncovered (16);Described signal port (31) and power port (32) through first penetrating uncovered (14) and second penetrating uncovered (16), and pour into marine glue at signal port (32) and power port (33) periphery.
- 4. the display unit module of the sub-display screen of LED electrical according to claim 3, is characterized in that:The position that described base plate (13) is corresponding with described LED circuit board (3) drive integrated circult (34) is provided with radiating block (4); Drive integrated circult (34) in described LED circuit board (3) is close to the medial surface (41) of radiating block (4).
- 5. the display unit module of the sub-display screen of LED electrical according to claim 4, is characterized in that:Described radiating block (4) outside is provided with radiating fin (42).
- 6. the display unit module of the sub-display screen of LED electrical according to claim 4, is characterized in that:It is a kind of burnishing surface (43) that described radiating block (4) outside is provided with, and by this burnishing surface (43), temperature is passed to other thermal component.
- 7. the display unit module of the sub-display screen of the LED electrical according to any one of claim 4 to 6, is characterized in that:Described base plate (13) and drive integrated circult (34) corresponding position are provided with the 3rd thoroughly uncovered (18), described heating radiator (4) is arranged on the 3rd thoroughly uncovered (18), and uncovered (18) and described heating radiator (4) seam crossing pour into marine glue thoroughly the 3rd.
- 8. the display unit module of the sub-display screen of the LED electrical according to any one of claim 4 to 6, is characterized in that:Described radiating block (4) imbeds described base plate (13) and drive integrated circult (34) corresponding position, and one-body molded with described base plate (13).
- 9. the display unit module of the sub-display screen of LED electrical according to claim 3, is characterized in that:The circuit board that described LED circuit board (3) is arranged on described drain pan (1) protects in (12), the electronic component height that the distance between the framework (11) of described LED circuit board (3) and described drain pan (1) and base plate (13) is installed a little more than described LED circuit board (3) back side.
- 10. the display unit module of the sub-display screen of LED electrical according to claim 3, is characterized in that:The surrounding of described first penetrating uncovered (14) and second penetrating uncovered (16) be respectively equipped with to described LED circuit board (3) direction projection and first penetrating uncovered the protecting of pressing close to LED circuit board (3) penetratingly uncoveredly protects edge (17) along (15) and second.
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CN201510241261.7A CN104992633A (en) | 2015-05-13 | 2015-05-13 | LED electronic display screen circuit board waterproof method and display module |
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CN201510241261.7A CN104992633A (en) | 2015-05-13 | 2015-05-13 | LED electronic display screen circuit board waterproof method and display module |
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Cited By (3)
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CN105810114A (en) * | 2016-05-20 | 2016-07-27 | 方迪勇 | Innovative light-emitting diode (LED) display module |
CN106340256A (en) * | 2016-10-25 | 2017-01-18 | 深圳市辉达投资有限公司 | Initiative heat dissipation type LED (Light-Emitting Diode) display screen panel |
CN110322799A (en) * | 2019-08-22 | 2019-10-11 | 黎泽辉 | A kind of combined type LED display screen mould group |
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CN204130094U (en) * | 2014-09-02 | 2015-01-28 | 深圳市聚智德科技有限公司 | Full Waterproof LED module before and after a kind of |
CN204632276U (en) * | 2015-05-13 | 2015-09-09 | 长沙信元电子科技有限公司 | A kind of water proof type display unit module being applicable to the sub-display screen of LED electrical |
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US6364507B1 (en) * | 2000-05-01 | 2002-04-02 | Formosa Industrial Computing Inc. | Waterproof LED display |
CN101329015A (en) * | 2008-06-06 | 2008-12-24 | 广州市雅江光电设备有限公司 | Split type LED light fitting |
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CN106340256A (en) * | 2016-10-25 | 2017-01-18 | 深圳市辉达投资有限公司 | Initiative heat dissipation type LED (Light-Emitting Diode) display screen panel |
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CN110322799A (en) * | 2019-08-22 | 2019-10-11 | 黎泽辉 | A kind of combined type LED display screen mould group |
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Application publication date: 20151021 |