CN101509652A - LED street lamp heat radiation method and LED street lamp - Google Patents
LED street lamp heat radiation method and LED street lamp Download PDFInfo
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- CN101509652A CN101509652A CNA2009100380828A CN200910038082A CN101509652A CN 101509652 A CN101509652 A CN 101509652A CN A2009100380828 A CNA2009100380828 A CN A2009100380828A CN 200910038082 A CN200910038082 A CN 200910038082A CN 101509652 A CN101509652 A CN 101509652A
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- led street
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B20/00—Energy efficient lighting technologies, e.g. halogen lamps or gas discharge lamps
- Y02B20/72—Energy efficient lighting technologies, e.g. halogen lamps or gas discharge lamps in street lighting
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- Arrangement Of Elements, Cooling, Sealing, Or The Like Of Lighting Devices (AREA)
- Non-Portable Lighting Devices Or Systems Thereof (AREA)
Abstract
The invention discloses a heat dissipation method for LED street lamps and an LED street lamp. The method comprises the steps as follows: a. the external surface of a PCB board is coated by a layer of radiation heat-dissipation temperature-reduction coating; b. an LED is arranged on one surface of the PCB board and the heat-dissipation metal part of the LED base is closely clung to the PCB board; c. the other surface of the PCB board is closely clung to the internal surface of the lamp shell, thus being assembled to form the LED street lamp. The LED street lamp comprises a lamp shell with a thermal slug; the lamp shell is internally provided with the PCB board; the external surface of the PCB board is provided with the radiation heat-dissipation temperature-reduction coating layer; one surface of the PCB board is clung to the internal surface of the lamp shell and the other surface thereof is provided with a plurality of LEDs. The heat dissipation method comprises the following heat dissipation paths sequentially: LED, PCB board, radiation heat-dissipation temperature-reduction coating layer, lamp shell and outside of the lamp body; the directional heat dissipation processing technology leads the heat generated when the LED runs to be conducted quickly from the substrate to the lamp shell 1, thus leading the inside and outside of the lamp body to be arranged in a heat balance quickly, and not only prolonging the service life of the lamp, but also reducing the cost of the lamp, lightens the weight of the lamp, and also reducing the cost simultaneously.
Description
Technical field
The invention belongs to the technical field of lighting, be specifically related to a kind of LED street lamp and heat dissipating method thereof that uses light emitting diode as light source.
Background technology
The same with conventional light source, semiconductor light-emitting-diode (LED) also can produce heat during operation, and how much it depends on whole luminous efficiency.Power up outside under the energy, the radiation recombination generation electroluminescent in electronics and hole, semiconductor medium and encapsulation medium that near the light that radiates the P-N knot also need pass through wafer (chip) itself just can arrive at external world's (air).Comprehensive electric current injection efficiency, radioluminescence quantum efficiency, wafer exterior light are taken out efficient etc., have quite a few energy mainly to transform heat energy with the form of the lattice vibration of non-radiative compound generation.And the rising of chip temperature then can strengthen non-radiative compoundly, further slackens luminous efficiency.
LED street lamp structure mainly is made up of housing, radiator, Switching Power Supply, led light source.Along with the semi-conductor industry development of technology, the light emitting diode cost performance improves day by day, and it is trend of the times that the LED street lamp replaces conventional road lamp (high-pressure mercury lamp etc.).Solve the quick heat radiating problem of LED, the heat that PN junction is produced can distribute as soon as possible, not only can improve the luminous efficiency of product, has also improved reliability of products and life-span simultaneously.In view of LED to the having relatively high expectations of radiating condition, the limit value if the PN junction junction temperature is above standard, LED will aggravate light decay, lowers efficiency, even quits work.So heat dissipation problem is the most scabrous key of LED street lamp.
Present most of enterprise all adopts technology such as hot pipe technique or fan active heat removal in order to solve heat dissipation problem, no matter takes which kind of heat dissipation technology, finally be the problem that outer shell area solves heat radiation, and the big more weight of area is big more.Increase area of dissipation, so just strengthened light fixture weight greatly, LED street lamp weight popular on the market all increases by two to three times than existing street lamp, and the street lamp weight that has reaches more than the 20kg, and is totally unfavorable to the security performance of street lamp, increased the light fixture cost again; The radiating mode of this traditional type also is a kind of three-dimensional radiating mode simultaneously, promptly distributes around the heat court that light fixture produces, and can cause the interior temperature of lamp body greater than skin temperature like this, is easy to destroy the LED normal operation circumstances.
Summary of the invention
The object of the present invention is to provide a kind of in light weight, LED road lamp cooling method and LED street lamp that cost is low.
For solving the problems of the technologies described above, the technical solution used in the present invention is: described LED road lamp cooling method may further comprise the steps:
A, be coated with last layer heat loss through radiation cooling coating at the outer surface of pcb board;
B, LED is installed on the one side of pcb board, and makes LED base heat radiating metal partly be close to pcb board;
C, the another side of pcb board is close to the lamp outer casing inner face, thereby assembling forms the LED street lamp.
Described LED street lamp, comprise the lamp outer casing that has fin, be provided with pcb board in the described lamp outer casing, described pcb board outer surface is provided with heat loss through radiation cooling dope layer, the one side of pcb board is attached to the lamp outer casing inner face, and the another side of pcb board is provided with several LED.
Owing to adopted above-mentioned structure, be coated with last layer heat loss through radiation cooling dope layer at the pcb board outer surface, the heatproof amplitude of heat loss through radiation cooling dope layer is at-50--450 ℃, and coating can reduce the pcb board temperature fast with 8-13.5 μ m infrared wavelength to lamp outer casing directional type radiating and cooling.By heat loss through radiation cooling dope layer pcb board and lamp outer casing are tightly sticked together, can strengthen the heat loss through radiation ability between them, by pcb board heat guiding structure to lamp outer casing.Because the base heat radiating metal of LED partly is close to pcb board,, thereby reach the effect of cooling and insulating so the LED body temperature is understood decline fast.Heat radiation approach of the present invention: outside LED → pcb board (aluminium base) → heat loss through radiation cooling dope layer → lamp outer casing → lamp body, this employing directional type radiating treatment technology, the heat that LED work is produced conducts to lamp outer casing 1 rapidly by substrate, is in thermal balance very soon inside and outside making lamp body.Both prolong the service life of light fixture, reduced the cost and the weight that has alleviated light fixture of light fixture again, also reduced cost simultaneously.
Description of drawings
Below in conjunction with accompanying drawing the specific embodiment of the present invention is described in further detail, but does not constitute any limitation of the invention.
Fig. 1 is the three-dimensional installation diagram of LED street lamp.
The specific embodiment
LED road lamp cooling method of the present invention may further comprise the steps:
A, be coated with last layer heat loss through radiation cooling coating at the outer surface of pcb board;
B, LED is installed on the one side of pcb board, and makes LED base heat radiating metal partly be close to pcb board 2;
C, the another side of pcb board is close to the lamp outer casing inner face, thereby assembling forms the LED street lamp.
Described heat loss through radiation cooling coating is ZS-411 heat loss through radiation cooling coating.
As shown in Figure 1, LED street lamp of the present invention, comprise the lamp outer casing of making by metal material 1, have fin on the lamp outer casing 1, be provided with pcb board 2 in the described lamp outer casing 1, described pcb board 2 outer surfaces are provided with heat loss through radiation cooling dope layer 3, heat loss through radiation cooling dope layer 3 is " ZS-411 " heat loss through radiation cooling coating, this coating has good anti-corrosive properties, good adhesive force, pliability, intensity, hardness, shock resistance, wearability are arranged, good self-cleaning is arranged, the advantage of no material deposition after the coating brushing.The weather resisteant of coating is also very good, can be in outdoor long-term stable operation.The one side of pcb board 2 is attached to lamp outer casing 1 inner face, and the another side of pcb board 2 is provided with several LED4, and the base heat radiating metal of LED4 partly is close to pcb board 2.
Be coated with last layer " ZS-411 " heat loss through radiation cooling dope layer 3 at pcb board 2 (aluminium base) outer surface, the heatproof amplitude of heat loss through radiation cooling dope layer 3 is at-50--450 ℃, coating can reduce pcb board 2 (aluminium base) temperature fast with 8-13.5 μ m infrared wavelength to lamp outer casing 1 directional type radiating and cooling.By heat loss through radiation cooling dope layer 3 pcb board 2 (aluminium base) and lamp outer casing 1 are tightly sticked together, can strengthen the heat loss through radiation ability between them, by pcb board 2 (aluminium base) heat guiding structure to lamp outer casing 1.Because the base heat radiating metal of LED4 partly is close to pcb board 2 (aluminium base),, thereby reach the effect of cooling and insulating so the LED4 body temperature is understood decline fast.Outside heat radiation approach of the present invention: LED4 → PCB2 plate (aluminium base) → heat loss through radiation cooling dope layer 3 → lamp outer casing 1 → lamp body, this employing directional type radiating treatment technology, the heat that LED work is produced conducts to lamp outer casing 1 rapidly by substrate, is in thermal balance very soon inside and outside making lamp body.Both prolong the service life of light fixture, reduced the cost and the weight that has alleviated light fixture of light fixture again, also reduced cost simultaneously.
Claims (4)
1. LED road lamp cooling method is characterized in that: may further comprise the steps:
A, be coated with last layer heat loss through radiation cooling coating at the outer surface of pcb board;
B, LED is installed on the one side of pcb board, and makes LED base heat radiating metal partly be close to pcb board;
C, the another side of pcb board is close to the lamp outer casing inner face, thereby assembling forms the LED street lamp.
2. according to the described LED road lamp cooling method of claim 1, it is characterized in that: described heat loss through radiation cooling coating is ZS-411 heat loss through radiation cooling coating.
3. LED street lamp, it is characterized in that: comprise the lamp outer casing (1) that has fin, be provided with pcb board (2) in the described lamp outer casing (1), described pcb board (2) outer surface is provided with heat loss through radiation cooling dope layer (3), the one side of pcb board (2) is attached to lamp outer casing (1) inner face, and the another side of pcb board (2) is provided with several LED (4).
4. according to the described LED street lamp of claim 3, it is characterized in that: described heat loss through radiation cooling dope layer (3) is ZS-411 heat loss through radiation cooling coating.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2009100380828A CN101509652A (en) | 2009-03-20 | 2009-03-20 | LED street lamp heat radiation method and LED street lamp |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2009100380828A CN101509652A (en) | 2009-03-20 | 2009-03-20 | LED street lamp heat radiation method and LED street lamp |
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| Publication Number | Publication Date |
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| CN101509652A true CN101509652A (en) | 2009-08-19 |
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| Application Number | Title | Priority Date | Filing Date |
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| CNA2009100380828A Pending CN101509652A (en) | 2009-03-20 | 2009-03-20 | LED street lamp heat radiation method and LED street lamp |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101865405A (en) * | 2010-06-02 | 2010-10-20 | 横店集团浙江得邦公共照明有限公司 | Streetlamp capable of prolonging service life of optical cavity sealing ring |
| CN102003684A (en) * | 2010-11-26 | 2011-04-06 | 北京化工大学 | Heat dissipation structure of high-power light-emitting diode (LED) illuminating lamp |
| CN103742819A (en) * | 2013-12-24 | 2014-04-23 | 孙雪刚 | Light-emitting diode (LED) light bar |
-
2009
- 2009-03-20 CN CNA2009100380828A patent/CN101509652A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101865405A (en) * | 2010-06-02 | 2010-10-20 | 横店集团浙江得邦公共照明有限公司 | Streetlamp capable of prolonging service life of optical cavity sealing ring |
| CN102003684A (en) * | 2010-11-26 | 2011-04-06 | 北京化工大学 | Heat dissipation structure of high-power light-emitting diode (LED) illuminating lamp |
| CN102003684B (en) * | 2010-11-26 | 2012-05-23 | 北京化工大学 | Heat dissipation structure of high-power light-emitting diode (LED) illuminating lamp |
| CN103742819A (en) * | 2013-12-24 | 2014-04-23 | 孙雪刚 | Light-emitting diode (LED) light bar |
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Open date: 20090819 |