CN102663967A - Waterproof structure of LED display screen and manufacturing process method for waterproof structure - Google Patents
Waterproof structure of LED display screen and manufacturing process method for waterproof structure Download PDFInfo
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- CN102663967A CN102663967A CN2012101078235A CN201210107823A CN102663967A CN 102663967 A CN102663967 A CN 102663967A CN 2012101078235 A CN2012101078235 A CN 2012101078235A CN 201210107823 A CN201210107823 A CN 201210107823A CN 102663967 A CN102663967 A CN 102663967A
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- pcb board
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Abstract
The invention relates to an LED device, and discloses a waterproof structure of an LED display screen and a manufacturing process method for the waterproof structure. The waterproof structure comprises a plurality of spliced PCBs (printed circuit boards) and a plurality of front covers respectively covering the PCBs. The waterproof structure is characterized in that the waterproof structure is further provided with a die-cast aluminum alloy box, a corrugated waterproof silicone pad and sealants, the sealants are filled in gaps inside the PCBs and in gaps among edges of the PCBs and edges of the aluminum alloy box, the corrugated waterproof silicone pad is positioned at a corrugated groove on the upper portion of the aluminum alloy box, and the PCBs are fixed onto the corrugated waterproof silicone pad. The waterproof structure is light in weight, low in pollution, less in deformation, fine in waterproof effect and fine in heat dissipation, a plastic bottom shell is omitted, the number of parts of the whole structure is decreased, and the service life of an LED lamp is prolonged.
Description
Technical field
The present invention relates to a kind of LED matrix.Be specifically related to a kind of LED display waterproof construction.The invention still further relates to a kind of process for making of LED display waterproof construction.
Background technology
1, like Fig. 1, the LED display casing all is panel beating iron casing or panel beating aluminium body structure at present.Its processing precision is low, and the casing error all between 1 ‰～3 ‰, makes engineering integral construction difficulty, and the many cumulative errorss of large tracts of land display screen quantity are just bigger; And flatness is poor, causes assembly difficulty big, when taking a lot of work.
2, like Fig. 1, the structure that present LED display mainly is made up of panel beating iron casing 1 and plastics drain pan 13, pcb board, face shield 1.
3, the casing that uses at present is thicker, and generally all at 100mm～200mm, the iron case is in the majority, and weight is big, and intensity is not high, needs material heavy when whole screen is installed, and so not only waste material has also expended too much resource.
4, mostly the casing that uses at present is the metal sheet metal structural, connects through waterproof apron and plastic bottom shell facies, and the north of china in winter outdoor environment temperature can reach (+30 ℃～+ 40 ℃) at (10 ℃～-20 ℃) after the outdoor display screen operate as normal.After the outage, lower the temperature rapidly, the temperature difference (40～60 degrees centigrade) of tens degree is totally arranged.Because sheet metal box body is different with the plastic bottom shell material; Hot expansibility difference is huge; Expanded by heating produces plastic bottom shell facies extruding and distortion mutually; Use (half a year to 2 year between) to have 3 one-tenths above display screens to occur in succession in normal operation for a long time: (1) display effect is poor, mosaic phenomenon occurs because the too small appearance flower in installation time crack shields.(2) after the plastics external member finishes in working order, cooling rapidly, material is very easily aging, torsional deformation.(3) crack occurs, and then lose waterproof effect, cause leaking, open circuit potential and components and parts cause the generation of some accidents such as circuit breaker, short circuit, fire.
5, present LED display structure uses plastic material too much, causes the waste of resource.Simultaneously, plastic material is (about 3～5 years) in process and later stage process, and old screen replacement is scrapped.Plastic material is difficult for degraded, contaminated environment.
6, the surface treatment of the metal sheet metal box body of present LED display is complicated, contaminated environment.
Summary of the invention
The purpose of this invention is to provide a kind of LED display waterproof construction, thus in light weight, pollute for a short time, no plastics drain pan has reduced whole number of components, be out of shape little, good water-proof effect, good heat dissipation has prolonged life-span of LED lamp.The purpose of this invention is to provide a kind of process for making.
In order to achieve the above object, the present invention has following technical scheme:
A kind of LED display waterproof construction of the present invention; Several pcb boards, several face shields of comprising splicing; Said several face shields cover respectively on several pcb boards; It is characterized in that: also be provided with the aluminium alloy box of die casting, corrugated water-proof silica-gel pad, fluid sealant; Gap between gap, pcb board edge and the aluminium alloy box edge in the said pcb board all is filled with fluid sealant, and said corrugated water-proof silica-gel pad is positioned at the corrugation grooves place on aluminium alloy box top, and pcb board is fixed on the corrugated water-proof silica-gel pad.
Wherein, the gap between said pcb board edge and the aluminium alloy box edge is 0.2～1.0mm.
Wherein, said several face shield jointing positions are provided with the slit, and this slit is with respect to acutangulate slit, face shield limit.
The process for making of a kind of LED display waterproof construction of the present invention has following steps:
1), casting forming aluminium alloy box;
2), be installed in corrugated water-proof silica-gel pad the corrugation grooves place on aluminium alloy box top;
3), be fixed on pcb board on the inner corrugated water-proof silica-gel pad of aluminium alloy box;
4), the employing glue-injection machine is injected into fluid sealant in the gap between gap, pcb board edge and the aluminium alloy box edge in the pcb board formation water barrier;
5), face shield is fixed on the pcb board.
Wherein, said fluid sealant is an organic silica gel.
Owing to taked above technical scheme, the invention has the advantages that:
1, body structure adopts the aluminium casing of aluminium alloy compression casting global formation, because aluminum ore is that the world enriches mining deposits most, and metal proportion is below 40% of iron; Simultaneously, surface treatment is simple, and is little to environmental impact.
2, the present invention has cancelled the plastics drain pan, reduces unit area and uses plastics more than 2/3, and parts reduce, and assembly technology is simplified, and enhances productivity.
3, the aluminium alloy box of die casting of the present invention and water-proof silica-gel circle contact portion are bellows-shaped, improve water resistance greatly; In addition pcb board is fixed on the corrugated water-proof silica-gel pad, makes pcb board be not easy to be damaged; Gap between pcb board edge and the aluminium alloy box edge is 0.2～1.0mm; Adopt numerically-controlled precise encapsulating machine, the perfusion fluid sealant, injecting glue is more accurate, after the colloid solidification; Flatness is higher, and through the gap at pcb board edge, colloid and bottom water-proof silica-gel pad be one each other, has promoted water resistance greatly simultaneously; And fluid sealant is the flexible glue material, when serviceability temperature raises, during the pcb board expanded by heating, can extend to four limits; It is different with the casing material to have solved pcb board, after the temperature rise, and the dilatational strain problem.
4, face shield utilizes asymmetric shape casting, and promptly said several face shield jointing positions are provided with the slit, and this slit is the slit that tilts with respect to the face shield limit, has solved well, and different with the casing material because of face shield, the temperature difference causes the whole screen of face shield deformation effect display effect.
5, one-piece construction parts of the present invention reduce, produce, and assembling, material is obviously changed, and significantly promotes and makes efficient, and economical with materials significantly reduces cost, and benefit is obvious.
6, overall weight of the present invention is light, and size is accurate, and box weight reduces more than 50%, and the one-piece construction material therefor can reduce 20%～30%, and operating efficiency promotes the Master Cost saving, and benefit increases.
7, the aluminium alloy box of the power supply of pcb board of the present invention and die casting is nearer, significantly promotes and improves heat dispersion, has prolonged led light source (lamp) damped cycle.
Description of drawings
Fig. 1 is the synoptic diagram of prior art LED display structure;
Fig. 2 is the synoptic diagram of face shield of the present invention;
Fig. 3 is the synoptic diagram of pcb board of the present invention;
Fig. 4 is the synoptic diagram of LED display structure of the present invention;
Fig. 5 be Fig. 4 C-C to the enlarged drawing of cut-open view;
Fig. 6 be Fig. 4 A-A to the enlarged drawing of cut-open view;
Fig. 7 be Fig. 2 B-B to the enlarged drawing of cut-open view;
Fig. 8 is the enlarged drawing at the D place of Fig. 6.
Among the figure: 1, face shield; 2, first pcb board; 3, second pcb board; 4, the 3rd pcb board; 5, the 4th pcb board; 6, aluminium alloy box; 6-1, panel beating iron casing; 7, corrugation grooves; 8, face shield gib screw; 9, corrugated water-proof silica-gel pad; 10, LED lamp; 11, pcb board gib screw; 12, fluid sealant; 13, plastics drain pan; 14, slit.
Embodiment
Following examples are used to explain the present invention, but are not used for limiting scope of the present invention.
Referring to Fig. 2-Fig. 8; A kind of LED display waterproof construction of the present invention; Form by face shield 1, pcb board, aluminium alloy box 6, corrugation grooves 7, face shield gib screw 8, corrugated water-proof silica-gel pad 9, pcb board gib screw 11, fluid sealant 12, slit 14; Gap between gap, pcb board edge and the aluminium alloy box edge in the said pcb board all is filled with fluid sealant; Said corrugated water-proof silica-gel pad is positioned at the corrugation grooves place on aluminium alloy box top, and pcb board is fixed on the corrugated water-proof silica-gel pad.Gap between said pcb board edge and the aluminium alloy box edge is 0.2～1.0mm.Said several face shield jointing positions are provided with the slit, and this slit is with respect to acutangulate slit, face shield limit.
1), casting forming aluminium alloy box;
2), be installed in corrugated water-proof silica-gel pad the corrugation grooves place on aluminium alloy box top;
3), be fixed on pcb board on the inner corrugated water-proof silica-gel pad of aluminium alloy box;
4), the employing glue-injection machine is injected into organic silica gel in the gap between gap, pcb board edge and the aluminium alloy box edge in the pcb board formation water barrier;
5), face shield is fixed on the pcb board.
Aluminium alloy box of the present invention adopts aluminium alloy compression casting to be shaped, and adopts precise numerical control machine processing then, the error at the diagonal angle of aluminium alloy box≤0.3 millimeter, casing flatness ± 0.2mm.
The present invention has cancelled the plastics drain pan, has reduced one-piece construction weight, and box weight reduces more than 50%, and the one-piece construction material therefor reduces 20%～30%, and operating efficiency promotes the Master Cost saving, and benefit has obtained increase.
In the use of screen body after installation of LED display of the present invention,, can pcb board dismounting back be fetched from the hollow out of aluminium alloy box, change, make things convenient for the maintenance of the outdoor screen in high-altitude if damage occurred.
Obviously, the above embodiment of the present invention only be for clearly the present invention is described and is done for example, and be not to be qualification to embodiment of the present invention.For the those of ordinary skill in affiliated field, on the basis of above-mentioned explanation, can also make other multi-form variation or change.Here can't give exhaustive to all embodiments.Everyly belong to the row that conspicuous variation that technical scheme of the present invention extends out or change still are in protection scope of the present invention.
Claims (5)
1. LED display waterproof construction; Several pcb boards, several face shields of comprising splicing; Said several face shields cover respectively on several pcb boards; It is characterized in that: also be provided with the aluminium alloy box of die casting, corrugated water-proof silica-gel pad, fluid sealant; Gap between gap, pcb board edge and the aluminium alloy box edge in the said pcb board all is filled with fluid sealant, and said corrugated water-proof silica-gel pad is positioned at the corrugation grooves place on aluminium alloy box top, and pcb board is fixed on the corrugated water-proof silica-gel pad.
2. a kind of LED display waterproof construction as claimed in claim 1 is characterized in that: the gap between said pcb board edge and the aluminium alloy box edge is 0.2～1.0mm.
3. a kind of LED display waterproof construction as claimed in claim 1 is characterized in that: said several face shield jointing positions are provided with the slit, and this slit is with respect to acutangulate slit, face shield limit.
4. the process for making of a LED display waterproof construction is characterized in that following steps are arranged:
1), casting forming aluminium alloy box;
2), be installed in corrugated water-proof silica-gel pad the corrugation grooves place on aluminium alloy box top;
3), be fixed on pcb board on the inner corrugated water-proof silica-gel pad of aluminium alloy box;
4), the employing glue-injection machine is injected into fluid sealant in the gap between gap, pcb board edge and the aluminium alloy box edge in the pcb board formation water barrier;
5), face shield is fixed on the pcb board.
5. the process for making of a kind of LED display waterproof construction as claimed in claim 4 is characterized in that: said fluid sealant is an organic silica gel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012101078235A CN102663967A (en) | 2012-04-13 | 2012-04-13 | Waterproof structure of LED display screen and manufacturing process method for waterproof structure |
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| CN2012101078235A CN102663967A (en) | 2012-04-13 | 2012-04-13 | Waterproof structure of LED display screen and manufacturing process method for waterproof structure |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103337601A (en) * | 2013-07-10 | 2013-10-02 | 襄阳慧能通汽车科技有限公司 | Battery casing of electromobile and manufacturing method thereof |
| CN104992638A (en) * | 2015-07-30 | 2015-10-21 | 长沙信元电子科技有限公司 | A display module of an LED display screen and a waterproof sealing strip thereof |
| CN105810107A (en) * | 2016-01-18 | 2016-07-27 | 深圳市创显光电有限公司 | LED display screen provided with three flatness adjusting mechanisms |
| CN108618728A (en) * | 2018-05-07 | 2018-10-09 | 华帝股份有限公司 | Dish-washing machine display control panel and its dish-washing machine |
| CN109754718A (en) * | 2019-02-18 | 2019-05-14 | 深圳市梓桥科技有限公司 | Underwater display screen |
| CN110373029A (en) * | 2019-07-31 | 2019-10-25 | 杭州超德斯实业有限公司 | A kind of oxygen mask and its material used |
| CN112996252A (en) * | 2021-02-09 | 2021-06-18 | 洲磊新能源(深圳)有限公司 | Manufacturing method of small-spacing LED display screen splicing process |
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| US6364507B1 (en) * | 2000-05-01 | 2002-04-02 | Formosa Industrial Computing Inc. | Waterproof LED display |
| CN201540699U (en) * | 2009-11-17 | 2010-08-04 | 深圳市愿景光电子有限公司 | LED display screen having waterproof structure |
| CN201976382U (en) * | 2010-12-31 | 2011-09-14 | 上海济丽信息技术有限公司 | Cast aluminum box structure of modular LED (light-emitting diode) large screen |
| CN202049690U (en) * | 2011-04-25 | 2011-11-23 | 刘振亮 | LED display screen display module with aluminium housing |
| CN202601101U (en) * | 2012-04-13 | 2012-12-12 | 北京彩讯科技股份有限公司 | Water-proof structure of light-emitting diode (LED) display screen |
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2012
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Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
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| US6364507B1 (en) * | 2000-05-01 | 2002-04-02 | Formosa Industrial Computing Inc. | Waterproof LED display |
| CN201540699U (en) * | 2009-11-17 | 2010-08-04 | 深圳市愿景光电子有限公司 | LED display screen having waterproof structure |
| CN201976382U (en) * | 2010-12-31 | 2011-09-14 | 上海济丽信息技术有限公司 | Cast aluminum box structure of modular LED (light-emitting diode) large screen |
| CN202049690U (en) * | 2011-04-25 | 2011-11-23 | 刘振亮 | LED display screen display module with aluminium housing |
| CN202601101U (en) * | 2012-04-13 | 2012-12-12 | 北京彩讯科技股份有限公司 | Water-proof structure of light-emitting diode (LED) display screen |
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103337601A (en) * | 2013-07-10 | 2013-10-02 | 襄阳慧能通汽车科技有限公司 | Battery casing of electromobile and manufacturing method thereof |
| CN103337601B (en) * | 2013-07-10 | 2016-01-20 | 湖北浩天朗能新能源科技有限公司 | The Battery case of electric automobile and manufacture method thereof |
| CN104992638A (en) * | 2015-07-30 | 2015-10-21 | 长沙信元电子科技有限公司 | A display module of an LED display screen and a waterproof sealing strip thereof |
| CN105810107A (en) * | 2016-01-18 | 2016-07-27 | 深圳市创显光电有限公司 | LED display screen provided with three flatness adjusting mechanisms |
| CN108618728A (en) * | 2018-05-07 | 2018-10-09 | 华帝股份有限公司 | Dish-washing machine display control panel and its dish-washing machine |
| CN108618728B (en) * | 2018-05-07 | 2024-05-24 | 华帝股份有限公司 | Dish washer display control panel and dish washer thereof |
| CN109754718A (en) * | 2019-02-18 | 2019-05-14 | 深圳市梓桥科技有限公司 | Underwater display screen |
| CN109754718B (en) * | 2019-02-18 | 2024-01-26 | 深圳市梓桥科技有限公司 | Underwater display screen |
| CN110373029A (en) * | 2019-07-31 | 2019-10-25 | 杭州超德斯实业有限公司 | A kind of oxygen mask and its material used |
| CN112996252A (en) * | 2021-02-09 | 2021-06-18 | 洲磊新能源(深圳)有限公司 | Manufacturing method of small-spacing LED display screen splicing process |
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Address after: 100094, Room 301, building 8, Zhongguancun Software Park, 8 northeast Wang Xi Road, Beijing, Haidian District Applicant after: Beijing Triolion Science & Technology Co., Ltd. Address before: 100085, room 1009, building 10, block C, Jinyu Ka Wah building, No. 9, 3rd Street, Haidian District, Beijing Applicant before: Beijing Triolion Science & Technology Co., Ltd. |
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Application publication date: 20120912 |