CN103486461B - Waterproof LED (Light-Emitting Diode) ball bulb lamp - Google Patents
Waterproof LED (Light-Emitting Diode) ball bulb lamp Download PDFInfo
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- CN103486461B CN103486461B CN201310280940.6A CN201310280940A CN103486461B CN 103486461 B CN103486461 B CN 103486461B CN 201310280940 A CN201310280940 A CN 201310280940A CN 103486461 B CN103486461 B CN 103486461B
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Abstract
The invention relates to a ball bulb lamp, and particularly relates to a waterproof LED (Light-Emitting Diode) ball bulb lamp. The ball bulb lamp comprises a light-emitting diode pressing plate, a lens, a radiator, a driving power supply and a screwed standard piece, wherein a light-emitting device is arranged in the light-emitting diode pressing plate. The waterproof LED ball bulb lamp is characterized in that a hollow upper cover is arranged at the upper end of the radiator in a closing manner; the hollow position of the upper cover is blocked by the lens; an upper waterproof rubber ring is arranged between the lens and the upper cover; the light-emitting diode pressing plate covers the lower part of the lens; the lens is provided with an on-plate chip, a lower waterproof rubber ring and the radiator which are arranged from top to bottom in sequence and are laminated in a layer-by-layer manner; the lower end of the radiator is closely connected with the lower cover; the lower cover is in sealing connection with the screwed standard piece; and the driving power supply is arranged in the screwed standard piece and is connected with the light-emitting device by an electric wire. The waterproof LED ball bulb lamp has the advantages of uniform heat distribution, reasonable arrangement of a heating device, good radiating effect, good waterproof effect and compact and durable structure.
Description
Technical field
The present invention relates to a kind of bulb lamp, particularly a kind of Waterproof LED bulb lamp.Belong to LED illumination device field, be particularly useful for the large lamp applications of caloric value in the environment of humidity, many water.
Background technology
The generation of the heat of LEDbulb lamp is mainly from two parts; A heat being LED and producing, a heat being driving power and producing: if the heat of this two part effectively can be distributed, both can improve the service life of LEDbulb lamp, again can be cost-saving.In the environment of humidity, many water, if directly opening heat radiation, the moisture in environment will enter on driving power and LED circuit and produce the danger such as short circuit, power-off.Therefore how to take into account heat radiation and waterproof, become the new difficult problem in industry.
In existing technology, there is following several scheme.
Publication number is the Chinese invention patent application of CN 102840486A, discloses a kind of LEDbulb lamp of waterproof and breathable structure.Its composition comprises: radiator (4), described radiator top and lampshade (1) are tightly connected, described bottom radiator and lamp holder (8) are tightly connected, described radiator inside is provided with support (5), substrate is provided with in described lampshade, described substrate is provided with LED lamp panel, described LED lamp panel is arranged one group of LED.The present invention is used for LEDbulb lamp waterproof.
This technology, the heat that LED produces and the heat being driving power generation, too concentrated, heat can be accumulated, and radiating effect is bad.
Publication number is the Chinese utility model patent of CN 201429057, disclose a kind of waterproof LED bulb lamp, comprise ball bubble and be connected to the lamp socket that ball steeps lower end, lamp socket lower end is provided with lamp holder, be provided with bayonet slot in described ball bubble bottom, in described lamp socket, be provided with bayonet socket barb, rubber o-ring and LED component, described LED component comprises LED and power supply circuits, described bayonet socket barb is stuck in described bayonet slot, forms interlocking.The utility model is claimed, has and both can produce in enormous quantities, has again the advantage of good water proofing property.
This technology, the same with front one, heater members is more concentrated, causes accumulation of heat, and radiating effect is bad.
Publication number is the Chinese utility model patent of CN202613155U, discloses a kind of water proof type LEDbulb lamp, belongs to the field of illuminating lamps under wet environment.This utility model comprises lamp holder, place light source board and the main cavity of power panel and the diffuser that combines with main cavity form, and main cavity and diffuser are same nonmetallic materials, not only insulate, and mutual easy melting.This use is novel as a kind of bulb lamp, due to diffuser and main cavity junction melting sealed, and main cavity electric power incoming line aperture is identical with power line wire diameter, and around use glue embedding again, make product in wet condition steam cannot enter in lamp body, guarantee device lifetime, and it is electrically upper safe and reliable, with low cost, whole energy, product is easy to user and applies.
, also there are the problems referred to above in this technology, and, the problem of seal failure that what it mainly solved is.
Publication number is the Chinese utility model patent of CN202927542U; disclose a kind of LEDbulb lamp of high efficiency and heat radiation waterproof; it comprises lampshade, LED lamp, radiator and lamp socket; inside radiator, power supply is installed; it is characterized in that; power protection shell is provided with inside radiator; power supply is arranged in power protection shell; open slot is provided with at the sidepiece of radiator; described power protection shell convex is provided with fin; during installation the fin of power protection shell accommodating and through open slot salient mounting in the outside of radiator, form common radiating convection passage.Buckle and draw-in groove is provided with between described lampshade and fin; sealing ring is had between lampshade buckle end face and fin end face; bulb socket and power protection shell composition plane are provided with sealing ring, and when bulb socket is connected with fin, power protection shell end-face seal ring is compressed by bulb socket inner plane and seals.Heat efficiently leaves by power protection shell, and the decay of LED light source or power supply can not be caused to cross cause thermal damage.This utility model is fitted through sealing ring sealing clamping, can economize and install glue adhesion process, can save production cost and cost of labor.
This technology, by the driving power of one of heater members is arranged among radiator, and mounting structure has ensured the smooth and easy of heat dissipation channel, certain radiating effect can be played, but also there is heat distribution inequality, the problem of hot-spot, due to the exposure of its driving power, its water resistance is also far not by far up to the mark.
Publication number is the Chinese invention patent of CN101608781, disclose a kind of high brightness, low energy consumption, the high-brightness LED underwater lamp that numerical control is photochromic, two-sided concave grooved lamp housing one groove surface is equipped with the LED chip of more than or, translucent cover is positioned at the one side that LED is housed of two-sided concave grooved lamp housing and is that waterproof sealing coordinates with it by rubber seal, another groove cavity of two-sided concave grooved lamp housing is built-in with control circuit board and the signal end of control circuit board is connected with the signal end of LED chip more than a slice or a slice respectively, binding post is sealedly connected on seal cover board and binding post lead-in wire is connected with control circuit board signal end, the another side of seal cover board and two-sided concave grooved lamp housing is sealed and matched.Advantage: one is not only avoid the harmful effect of control circuit to LED chip, and drastically increases the light conversion efficiency of LED chip; Two is achieve the direct cooling to LED chip, reduces energy consumption, improves the light conversion efficiency of LED chip, greatly extend the service life of LED chip; Three is the objects achieving direct water-cooling cooling.
This technology, driving power distributed with separating of LED chip, radiating effect is better than that other are several, and achieves water-tight, but, the distribution of this technology is too compact, radiating effect has discount, and key is, does not still solve LED chip partial heat and distributes uneven, the problem of hot-spot, makes radiating effect limited.
Summary of the invention
Technical problem to be solved by this invention be to provide a kind of reasonable in design, uniform heat distribution, heater members arrangement rationally, Waterproof LED bulb lamp that good heat dissipation effect, good water-proof effect, close structure are durable.
It is this Waterproof LED bulb lamp that the present invention solves the problems of the technologies described above adopted technical scheme, comprise light emitting diode pressing plate, lens, radiator, driving power and screw socket standard component, luminescent device is provided with in described light emitting diode pressing plate, it is characterized in that: the airtight upper cover being provided with hollow in described radiator upper end, described lens get lodged in the middle vacancy of upper cover, waterproof apron is provided with between described lens and upper cover, described light emitting diode pressing plate covers on the bottom of lens, described lens are by setting gradually from top to bottom and the chip on board of pressing layer by layer, lower waterproof apron, radiator is fixed, described radiator lower end is closely connected with lower cover, and described lower cover and screw socket standard component are tightly connected, and described driving power is arranged in screw socket standard component, and described driving power is connected by electric wire with luminescent device.
Electric wire is through the hole on lower cover, radiator, upper cover and light emitting diode pressing plate, and in this some holes, the hole marine glue at least on light emitting diode pressing plate is filled.Also can all fill with marine glue.
Structure of the present invention, achieves being separated of LED chip and driving power two main heating source, has effectively disperseed the region of high heat; Use chip on board, improve the spatial dispersion performance of heat greatly, avoid concentrating of hot-spot and heat.Compact conformation and solid in addition, pressing is tight, has effectively played the effect of upper waterproof apron and lower waterproof apron, can play good waterproof effect.Radiator and upper cover, lower cover rational in infrastructure, coordinate closely, effectively decrease the pressure-bearing of working of plastics, structural stability of the present invention and service life can be increased, and, radiator heat-dissipation can be conducted to fast, greatly reduce the temperature of radiator, reduce light decay phenomenon completely, improve the luminescent lifetime of light efficiency and luminescent device.The design of structure makes outward appearance more attractive in appearance, and processing technology is simpler and radiating effect is better, effectively extends the service life of luminescent device further.
As preferably, cover under of the present invention and be provided with separation layer.
The setting of separation layer, LED chip and driving power two main heating source are made to be separated further, add the convection space of intermediate air or current, the further region disperseing high heat, avoid concentrating of hot-spot and heat, further increase radiating effect, make the temperature of LED and drive circuit lower.
As preferably, radiator of the present invention is connected by threaded fittings plate with lower cover.
Also the hole that supply lines passes is provided with above threaded fittings plate.
Threaded fittings plate is convenient to the fixing of radiator and lower cover, makes overall appearance generous.
As preferably, between lens of the present invention and chip on board, be provided with chip pressing plate.
The setting of chip pressing plate, has compressed lens further, makes chip on board, lens, structure between upper cover and radiator tightr and tight, fitness is better, ensured the pressing between lens and upper cover, can strengthen waterproof effect, overall structure is also more stable.
As preferably, the present invention is also provided with fixture, and described upper cover and light emitting diode pressing plate are fixed by fixture.
The setting of fixture, what make between upper cover and light emitting diode pressing plate is fixing more stable, has ensured the pressing between lens and upper cover, can strengthen waterproof effect.
As preferably, radiator of the present invention is cold forging radiator.
The effect of radiator can be given full play to, reduce overall temperature, extend the service life of product further.
As preferably, threaded fittings plate of the present invention is fixedly connected with by lower fixture with lower cover.
As preferably, it is inner that driving power of the present invention is fixedly installed on screw socket standard component by power supply fixture.
Fixing by power supply fixture, can improve the steadiness of driving power, avoid accidental damage.
As preferably, upper waterproof apron of the present invention adopts silica gel material to make.
As preferably, lower waterproof apron of the present invention adopts silica gel material to make.
Silica gel material have can breathe freely, again can the characteristic energy of waterproof, it can allow air flow through, and moisture can not, through going, enable bulb lamp use even under water in a humid environment.
The present invention compared with the existing technology has the following advantages and effect: 1, structure of the present invention, achieves being separated of LED chip and driving power two main heating source, has effectively disperseed the region of high heat; Use chip on board, improve the spatial dispersion performance of heat greatly, avoid concentrating of hot-spot and heat.Compact conformation and solid in addition, pressing is tight, has effectively played the effect of upper waterproof apron and lower waterproof apron, can play good waterproof effect.Radiator and upper cover, lower cover rational in infrastructure, coordinate closely, effectively decrease the pressure-bearing of working of plastics, structural stability of the present invention and service life can be increased, and, radiator heat-dissipation can be conducted to fast, greatly reduce the temperature of radiator, reduce light decay phenomenon completely, improve the luminescent lifetime of light efficiency and luminescent device.The design of structure makes outward appearance more attractive in appearance, and processing technology is simpler and radiating effect is better, effectively extends the service life of luminescent device further.2, the setting of separation layer, LED chip and driving power two main heating source are made to be separated further, add the convection space of intermediate air or current, the further region disperseing high heat, avoid concentrating of hot-spot and heat, further increase radiating effect, make the temperature of LED and drive circuit lower.3, threaded fittings plate is convenient to the fixing of radiator and lower cover, makes overall appearance generous.4, the setting of chip pressing plate, has compressed lens further, makes chip on board, lens, structure between upper cover and radiator tightr and tight, fitness is better, ensured the pressing between lens and upper cover, can strengthen waterproof effect, overall structure is also more stable.5, the setting of fixture, what make between upper cover and light emitting diode pressing plate is fixing more stable, has ensured the pressing between lens and upper cover, can strengthen waterproof effect.6, radiator is cold forging radiator, can give full play to the effect of radiator, reduces overall temperature, extends the service life of product further.Fixing 7, by power supply fixture, can improve the steadiness of driving power, avoid accidental damage.8, two waterproof aprons of the present invention adopt silica gel material, have can breathe freely, again can the characteristic energy of waterproof, it can allow air flow through, and moisture can not, through going, enable bulb lamp use even under water in a humid environment.
Accompanying drawing explanation
In order to be illustrated more clearly in the embodiment of the present invention or technical scheme of the prior art, be briefly described to the accompanying drawing used required in embodiment or description of the prior art below, apparently, accompanying drawing in the following describes is only some embodiments of the present invention, for those of ordinary skill in the art, under the prerequisite not paying creative work, other accompanying drawing can also be obtained according to these accompanying drawings.
Fig. 1 is decomposition texture schematic diagram of the present invention.
Fig. 2 is perspective view of the present invention.
Fig. 3 is cross-sectional schematic of the present invention.
Label declaration: upper cover 1, fixture 2, light emitting diode pressing plate 3, upper waterproof apron 4, lens 5, chip pressing plate 6, chip on board 7, lower waterproof apron 8, radiator 9, threaded fittings plate 10, lower fixture 11, lower cover 12, driving power 13, screw socket standard component 14, power supply fixture 15, separation layer 16.
Detailed description of the invention
Below in conjunction with embodiment, the present invention is described in further detail, and following examples are explanation of the invention and the present invention is not limited to following examples.
Embodiment 1: as shown in Figures 1 to 3, the Waterproof LED bulb lamp of the present embodiment is made up of upper cover 1, fixture 2, light emitting diode pressing plate 3, upper waterproof apron 4, lens 5, chip pressing plate 6, chip on board 7, lower waterproof apron 8, radiator 9, threaded fittings plate 10, lower fixture 11, lower cover 12, driving power 13, screw socket standard component 14, power supply fixture 15.Wherein, upper cover 1 and lower cover 12 are fixedly connected on the two ends of radiator 9 respectively, upper cover 1 is middle porose structure, lens 5 are stuck in the hole in the middle of upper cover 1, waterproof apron 4 is provided with between lens 5 and upper cover 1, scioptics 5 compress the effect that upper waterproof apron 4 plays sealing, and the light emitting diode pressing plate 3 that centre is provided with luminescent device is enclosed within lens 5, and is fixedly connected with upper cover 1 by fixture 2.The below of lens 5 is disposed with the chip pressing plate 6 and chip on board 7 that match each other, and lens pushed down by chip pressing plate 6, chip on board 7 and radiator 9 closely pressing.Lower waterproof apron 8 is arranged on the effect playing sealing between upper cover 1 and radiator 9.Lower cover 12 is fixedly connected with radiator 9 by threaded fittings plate 10, and threaded fittings plate 10 is fixedly connected with by lower fixture 11 with lower cover 12.Lower cover 12 is provided with separation layer 16, and separation layer 16 is lattice-shaped, and adopt the good material of thermal conductivity to make, lower end and the screw socket standard component 14 of lower cover 12 are tightly connected, and driving power 13 is fixed on the inside of screw socket standard component 14 by power supply fixture 15.
It should be noted that, radiator 9 of the present invention is cold forging radiator, and upper waterproof apron 4 and lower waterproof apron 8 adopt silica gel material to make.
In addition, it should be noted that, the specific embodiment described in this description, the shape, institute's title of being named etc. of its parts and components can be different.All equivalences of doing according to structure, feature and the principle described in inventional idea of the present invention or simple change, be included in the protection domain of patent of the present invention.Those skilled in the art can make various amendment or supplement or adopt similar mode to substitute to described specific embodiment; only otherwise depart from structure of the present invention or surmount this scope as defined in the claims, protection scope of the present invention all should be belonged to.
Claims (1)
1. a Waterproof LED bulb lamp, it is characterized in that: comprise light emitting diode pressing plate, lens, radiator, driving power and screw socket standard component, luminescent device is provided with in described light emitting diode pressing plate, the airtight upper cover being provided with hollow in described radiator upper end, described lens get lodged in the middle vacancy of upper cover, waterproof apron is provided with between described lens and upper cover, described light emitting diode pressing plate covers on the bottom of lens, and described lens are by set gradually from top to bottom and the chip on board of pressing layer by layer, lower waterproof apron, radiator are fixed; Described radiator lower end is closely connected with lower cover, described lower cover and screw socket standard component are tightly connected, described driving power is arranged in screw socket standard component, described driving power is connected by electric wire with luminescent device, cover under described and be provided with separation layer, separation layer is lattice-shaped, the good material of thermal conductivity is adopted to make, described radiator is connected by threaded fittings plate with lower cover, chip pressing plate is provided with between described lens and chip on board, also be provided with fixture, described upper cover and light emitting diode pressing plate are fixed by fixture.
2
.waterproof LED bulb lamp according to claim 1, is characterized in that: described radiator is cold forging radiator.
3
.waterproof LED bulb lamp according to claim 1, is characterized in that: described threaded fittings plate is fixedly connected with by lower fixture with lower cover.
4
.waterproof LED bulb lamp according to claim 1, is characterized in that: it is inner that described driving power is fixedly installed on screw socket standard component by power supply fixture.
5
.waterproof LED bulb lamp according to claim 1, is characterized in that: described upper waterproof apron adopts silica gel material to make.
6
.waterproof LED bulb lamp according to claim 1, is characterized in that: described lower waterproof apron adopts silica gel material to make.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310280940.6A CN103486461B (en) | 2013-07-05 | 2013-07-05 | Waterproof LED (Light-Emitting Diode) ball bulb lamp |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201310280940.6A CN103486461B (en) | 2013-07-05 | 2013-07-05 | Waterproof LED (Light-Emitting Diode) ball bulb lamp |
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| Publication Number | Publication Date |
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| CN103486461A CN103486461A (en) | 2014-01-01 |
| CN103486461B true CN103486461B (en) | 2015-06-17 |
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| CN201310280940.6A Active CN103486461B (en) | 2013-07-05 | 2013-07-05 | Waterproof LED (Light-Emitting Diode) ball bulb lamp |
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Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104373845A (en) * | 2014-11-12 | 2015-02-25 | 广德利德光电有限公司 | Waterproof heat dissipating LED lamp |
| CN104373844A (en) * | 2014-11-12 | 2015-02-25 | 广德利德光电有限公司 | Waterproof LED lamp |
| CN106322305B (en) * | 2015-06-25 | 2023-03-03 | 袁烽旗 | LED explosion-proof lamp |
| CN110822363A (en) * | 2019-11-26 | 2020-02-21 | 广州市超亮电子科技有限公司 | Laser pressing headlamp and laser lighting pressing evidence obtaining method |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CA2691419A1 (en) * | 2010-01-25 | 2011-07-25 | Yun-Zhao Liu | Floatable diving torch |
| CN102155697A (en) * | 2011-04-25 | 2011-08-17 | 东莞市百分百科技有限公司 | Method for manufacturing street lamp and LED (light emitting diode) streetlamp for implementing method |
| CN201954297U (en) * | 2010-12-03 | 2011-08-31 | 东莞勤上光电股份有限公司 | LED light source module |
| CN201983133U (en) * | 2011-04-18 | 2011-09-21 | 江苏省飞花灯饰制造有限公司 | Integrated light-emitting unit used for hectowatt-level power-adjustable combined type light-emitting diode (LED) street lamp |
| CN202024257U (en) * | 2011-01-28 | 2011-11-02 | 合心科技股份有限公司 | Led lamp |
| CN202955538U (en) * | 2012-12-05 | 2013-05-29 | 浙江中博光电科技有限公司 | High-power LED (light emitting diode) lamp |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20110029209A (en) * | 2009-09-15 | 2011-03-23 | (주)세화테크 | Street light having led diode |
-
2013
- 2013-07-05 CN CN201310280940.6A patent/CN103486461B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CA2691419A1 (en) * | 2010-01-25 | 2011-07-25 | Yun-Zhao Liu | Floatable diving torch |
| CN201954297U (en) * | 2010-12-03 | 2011-08-31 | 东莞勤上光电股份有限公司 | LED light source module |
| CN202024257U (en) * | 2011-01-28 | 2011-11-02 | 合心科技股份有限公司 | Led lamp |
| CN201983133U (en) * | 2011-04-18 | 2011-09-21 | 江苏省飞花灯饰制造有限公司 | Integrated light-emitting unit used for hectowatt-level power-adjustable combined type light-emitting diode (LED) street lamp |
| CN102155697A (en) * | 2011-04-25 | 2011-08-17 | 东莞市百分百科技有限公司 | Method for manufacturing street lamp and LED (light emitting diode) streetlamp for implementing method |
| CN202955538U (en) * | 2012-12-05 | 2013-05-29 | 浙江中博光电科技有限公司 | High-power LED (light emitting diode) lamp |
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