CN104748012A - Large-power LED lamp - Google Patents
Large-power LED lamp Download PDFInfo
- Publication number
- CN104748012A CN104748012A CN201510144611.8A CN201510144611A CN104748012A CN 104748012 A CN104748012 A CN 104748012A CN 201510144611 A CN201510144611 A CN 201510144611A CN 104748012 A CN104748012 A CN 104748012A
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- CN
- China
- Prior art keywords
- led lamp
- radiator
- working medium
- lamp bead
- magnetic working
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21W—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO USES OR APPLICATIONS OF LIGHTING DEVICES OR SYSTEMS
- F21W2131/00—Use or application of lighting devices or systems not provided for in codes F21W2102/00-F21W2121/00
- F21W2131/10—Outdoor lighting
- F21W2131/103—Outdoor lighting of streets or roads
Abstract
The invention discloses a large-power LED lamp. The large-power LED lamp comprises a heat radiator and LED light beads installed on the heat radiator, and is characterized in that ceramic powder or ganister sand is smeared on the surface of the heat radiator. Compared with the prior art, the ceramic powder or ganister sand is smeared on the surface of the heat radiator instead of painting (a traditional process), guarantees the antioxygenic property of the heat radiator, and effectively improves the heat radiation performance of the heat radiator. An experiment shows that after the surface of the heat radiator is coated with paint, the heat radiation performance of the whole heat radiator will decrease by about 25 percent; but after the surface of the heat radiator is coated with the ceramic powder or ganister sand, the heat radiation performance of the whole heat radiator is improved by above 25 percent, and the heat radiation effect is greatly and obviously improved.
Description
Technical field
The present invention relates to great power LED application, particularly relate to a kind of high-power LED street lamp, Square Lamp etc.
Background technology
High-powered LED lamp replaces traditional street lamp, the application of Square Lamp becomes trend, but the high-powered LED lamp key technology in the application of prior art is heat dissipation technology, and the quality of heat dissipation technology is directly directly proportional to life-span of LED lamp and power.Current LED heat dissipation technology still rests on Material selec-tion and cooling surface area expands two aspects, and also adopt the mode of spray paint on the surface of work heat radiation rack for existing LED street lamp, the employing of paint more has a strong impact on the radiating effect of heat radiation rack, the rate of heat dissipation of more than 25% can be affected according to measuring and calculating, thus have a strong impact on the service life of high-powered LED lamp, so current LED street lamp most life-span only has 20000 hours.Entered the high speed development epoch in LED technology, its outstanding function makes its application more extensive, and extends to high-end field, such as spacecraft, aircraft, submersible, polar expedition, the key areas such as ocean attracting.Above field all uses performance to have high requirement to LED, needs life-span and photochromic, that light leads to output stability.The requirement that prior art is used from high-end special dimension also differs greatly.As, when running into polar climate, severe temperature difference environment, the power of LED, light output and colour rendering can very easily change, and easily cause death, and make practice produce serious consequence.
Summary of the invention
For problems of the prior art, the object of the present invention is to provide a kind of high-powered LED lamp of good heat dissipation effect.
For reaching above object, the present invention adopts following technical scheme.
High-powered LED lamp, comprising: radiator and the LED lamp bead of installing on a heat sink, is characterized in that, be coated with ceramic powder or silica flour on the surface of radiator.
As with improvement, be provided with radiating fin on a heat sink, described ceramic powder or silica flour uniform fold are at radiator and cooling fin surfaces.
As with improvement, the profile of described radiator is obtained by Bionic Design, and the quantity of described LED lamp bead is more than one, and each LED lamp bead is disposed on the same plane.
As with improvement, described Bionic Design comprises butterfly-like design, and dragonfly shape designs, and leaf shape designs, and sunflower shape designs, and flying bird shape designs, and flowers shape designs, and fruits and vegetables shape designs.
As with improvement, the shape of described radiator is heronsbill shape radiator, and described heronsbill shape radiator comprises columniform heat radiator body and the uniform ring radiation rib around heat radiator body surrounding.
As with improvement, be provided with gas-liquid on a heat sink and transform hollow cavity, described LED lamp bead is arranged on gas-liquid and transforms in the plane of hollow cavity side, and transform on hollow cavity another side in gas-liquid and be provided with the magnetic working medium corresponding with LED lamp bead, corresponding described magnetic working medium is provided with excitation unit.
As with improvement, transform on hollow cavity another side in gas-liquid and be provided with the hollow circular-tube corresponding with LED lamp bead, described hollow circular-tube outwardly convex, described magnetic working medium is arranged on hollow circular-tube.
As with improvement, described magnetic working medium penetrate in gas-liquid conversion hollow cavity with the installation position of LED lamp bead against.
As with improvement, described high-powered LED lamp comprises the temperature measuring equipment for measuring LED lamp bead operating temperature;
When operating temperature is more than 70 DEG C, excitation unit encourages degaussing to magnetic working medium, refrigeration work;
When operating temperature is lower than 50 DEG C, excitation unit quits work;
When operating temperature resists the cold limit lower than LED, excitation unit carries out not intermittently isothermal excitation to magnetic working medium, constant temperature work.
As with improvement, described great power LED also comprises temperature control module, and described temperature control module is connected with temperature measuring equipment, excitation unit signal, is used for controlling work opportunity and the mode of operation of excitation unit.
Compared with conventional art, the present invention adopts the mode at spreader surface coating ceramic powder or silica flour, effectively avoids painting the adverse effect brought radiator performance.Through experimental verification, after spreader surface spray paint, the heat dispersion of whole radiator declines about 25%, and after the ceramic coated powder of spreader surface or silica flour, the heat dispersion of whole radiator improves more than 25%, that is, total heat dispersion obtains the improvement of about 50%, radiating effect is greatly improved, and technological progress is remarkable.
Accompanying drawing explanation
Figure 1 shows that the generalized section of the high-powered LED lamp that the embodiment of the present invention one provides;
Figure 2 shows that the structural representation of the high-powered LED lamp that the embodiment of the present invention two provides;
Fig. 3-Figure 6 shows that high-powered LED lamp lamp fractal transform design drawing provided by the invention.
Description of reference numerals:
1, radiator, 2, LED lamp bead, 3, ceramic powder, 4, gas-liquid transforms chamber, 5, hollow circular-tube,
6, magnetic working medium, 7, excitation unit;
11, radiator body, 12, radiating fin.
Detailed description of the invention
Understand essence of the present invention better for convenience of those of ordinary skill in the art, below in conjunction with accompanying drawing, the specific embodiment of the present invention is described in detail.
Embodiment one
As shown in Figure 1, a kind of high-powered LED lamp comprises: radiator 1, is arranged on the LED lamp bead 2 on radiator 1, it is characterized in that, be coated with one deck ceramic powder 3 on the surface of radiator 1.
Wherein, described radiator 1 comprises columniform heat radiator body 11 and the uniform ring radiating fin 12 around heat radiator body 11 surrounding.
The gas-liquid that radiator body 11 is provided with flat transforms chamber 4, described LED lamp bead 2 is arranged on gas-liquid and transforms in the plane of hollow cavity 4 side, transform on hollow cavity 4 another side in gas-liquid and be provided with the hollow circular-tube 5 corresponding with LED lamp bead 2, described hollow circular-tube 5 outwardly convex, the diameter of hollow circular-tube 5 conforms to the size of substrate of LED lamp bead 2.The outer wall of hollow circular-tube 3 is provided with magnetic working medium 6, and corresponding magnetic working medium 6 is provided with excitation unit 7, and what be used for realizing magnetic working medium 6 encourages degaussing.
During real work, if high-power LED lamp is in super negative hot working, then utilize excitation unit to encourage degaussing to magnetic working medium, reach the object of refrigeration of reducing phlegm and internal heat; If high-power LED lamp is in polar region or high-altitude supercool temperature duty, then excitation unit carries out not intermittently isothermal excitation to magnetic working medium, reaches the object of constant temperature.
In the present embodiment, it is relative vacuum degree vacuum chamber between-90kPa to-30kPa that preferred gas-liquid transforms hollow cavity 4, and in vacuum chamber, be filled with low-boiling point liquid, described low-boiling point liquid is the mixture of pure water, alcohol and ether.Preferred magnetic working medium 6 is made up of the above Rare-Earth Magnetic refrigerating material of room temperature.Preferred excitation unit 7 is for being looped around the solenoid around magnetic working medium 6, and described solenoid does not directly contact with magnetic working medium 6, so that the maintenance of device.
The quantity of preferred LED lamp bead 2 is three, and be just provided with a hollow circular-tube 5 to each LED lamp bead 2, one end of hollow circular-tube 5 is closed, and the other end and the gas-liquid of hollow circular-tube 5 transform hollow cavity 1 and be communicated with.The diameter of preferred each hollow circular-tube 5 is consistent with the size of substrate of corresponding LED lamp bead 2.
Temperature measuring equipment for measuring LED lamp bead operating temperature is preferably housed on gas-liquid conversion hollow cavity 4; When operating temperature is more than 70 DEG C, gas-liquid transforms the low-boiling point liquid boiling in hollow cavity 4, is converted into steam; At this moment excitation unit encourages degaussing to magnetic working medium, and magnetic working medium carries out refrigeration work, makes steam-condensation, and is back to LED lamp bead installation portion along the inwall of gas-liquid conversion hollow cavity 4; Circulate according to this, reach the object of control LED operating temperature.When LED lamp bead operating temperature is lower than 50 DEG C, excitation unit quits work; When operating temperature resists the cold limit lower than LED, excitation unit carries out not intermittently isothermal excitation to magnetic working medium, constant temperature work.For convenience of the work opportunity and the mode of operation that control excitation unit, described temperature measuring equipment, excitation unit also signal are connected with temperature control module, utilize temperature control module to control the start and stop of excitation unit.
For showing the radiating effect of the high-powered LED lamp that the present embodiment provides better, experimental test is carried out to the high-power LED street lamp (experimental group 1-3) that high-power LED street lamp (contrast groups) and the present embodiment at spreader surface coating paint provides below.
Test condition: the excitation unit break-off of experimental group, select power to be the street lamp of 110W, light under room temperature (25 DEG C), continuous firing samples the temperature of LED mounting points and cooling fin surfaces respectively after 4 hours.Test result is in table 1.
Table 1, heat radiation test data of experiment table
| LED mounting points temperature | Cooling fin surfaces temperature | The temperature difference | |
| Experimental group 1 | 75℃ | 41℃ | 34℃ |
| Experimental group 2 | 73℃ | 40℃ | 33℃ |
| Experimental group 3 | 76℃ | 41℃ | 35℃ |
| Contrast groups | 90℃ | 73℃ | 17℃ |
Compared with prior art, the present embodiment utilizes ceramic powder to replace paint in spreader surface, effectively improves the heat dispersion of radiator while ensureing radiator antioxygenic property.Through experimental verification, ceramic powder is utilized to replace paint spraying after spreader surface, the temperature of LED mounting points temperature reduces by more than 14 DEG C, and the temperature difference of LED mounting points and cooling fin surfaces (heat dispersion) promotes about 50%, and radiating rate is greatly improved
The ingenious utilization gas-liquid of the high-powered LED lamp that the present embodiment provides transforms the installation base plate that hollow cavity serves as LED lamp bead, transform in hollow cavity in gas-liquid and form a high-efficiency internal circulation, there is very outstanding cold and hot switching performance, meet magnetic working medium and reduce phlegm and internal heat or external condition needed for constant temperature work.
Embodiment two
The high-powered LED lamp that the present embodiment provides and embodiment one basically identical, difference is:
One, silica flour is adopted to replace ceramic powder.Through experimental verification, after silicon-coating bisque, the heat dispersion of radiator also improves about 25%, close with embodiment one,
Two, as shown in Figure 2, the profile of radiator 1 be by Bionic Design obtain butterfly-like, butterfly-like radiator 1 is provided with the plane for mounted LED lamp bulb 2.
As shown in figures 3 to 6, the bionical shape design of radiator 1 can also be flying bird shape, flowers shape, fruits and vegetables shape, leaf shape.Correspondingly, each bionical shape radiator 1 is respectively equipped with the plane for mounted LED lamp bulb 2.
As a kind of equivalent implementations of the present embodiment, the shape of described radiator is heronsbill shape radiator, and described heronsbill shape radiator comprises columniform heat radiator body and the uniform ring radiation rib around heat radiator body surrounding.
Above detailed description of the invention has been described in detail essence of the present invention, but can not limit protection scope of the present invention with this.Apparently, under the enlightenment of essence of the present invention, the art those of ordinary skill also can carry out many improvement and modification, such as the profile design of radiator is become other Bionic Design such as dragonfly shape, sunflower shape, such as magnetic working medium one end is arranged to contact with LED lamp bead installation position again, allow magnetic working medium to go cold constant temperature more directly to act on LED lamp bead first-class.It should be noted that these improve and modify all to drop within claims of the present invention.
Claims (10)
1. high-powered LED lamp, comprising: radiator and the LED lamp bead of installing on a heat sink, is characterized in that, be coated with ceramic powder or silica flour on the surface of radiator.
2. high-powered LED lamp according to claim 1, is characterized in that, is provided with radiating fin on a heat sink, and described ceramic powder or silica flour uniform fold are at radiator and cooling fin surfaces.
3. high-powered LED lamp according to claim 1, is characterized in that, the profile of described radiator is obtained by Bionic Design, and the quantity of described LED lamp bead is more than one, and each LED lamp bead is disposed on the same plane.
4. high-powered LED lamp according to claim 3, is characterized in that, described Bionic Design comprises butterfly-like design, and dragonfly shape designs, and leaf shape designs, and flying bird shape designs, and flowers shape designs, and fruits and vegetables shape designs.
5. high-powered LED lamp according to claim 1, is characterized in that, the shape of described radiator is heronsbill shape radiator, and described heronsbill shape radiator comprises columniform heat radiator body and the uniform ring radiation rib around heat radiator body surrounding.
6. according to the high-powered LED lamp in claim 1-5 described in any one, it is characterized in that, be provided with gas-liquid on a heat sink and transform hollow cavity, described LED lamp bead is arranged on gas-liquid and transforms in the plane of hollow cavity side, the another side of gas-liquid conversion hollow cavity is provided with the magnetic working medium corresponding with LED lamp bead, and corresponding described magnetic working medium is provided with excitation unit.
7. high-powered LED lamp according to claim 6, is characterized in that, transform on hollow cavity another side in gas-liquid and be provided with the hollow circular-tube corresponding with LED lamp bead, described hollow circular-tube outwardly convex, described magnetic working medium is arranged on hollow circular-tube.
8. high-powered LED lamp according to claim 6, is characterized in that, described magnetic working medium penetrate in gas-liquid conversion hollow cavity with the installation position of LED lamp bead against.
9. high-powered LED lamp according to claim 6, is characterized in that, it comprises the temperature measuring equipment for measuring LED lamp bead operating temperature;
When operating temperature is more than 70 DEG C, excitation unit encourages degaussing to magnetic working medium, refrigeration work;
When operating temperature is lower than 50 DEG C, excitation unit quits work;
When operating temperature resists the cold limit lower than LED, excitation unit carries out not intermittently isothermal excitation to magnetic working medium, constant temperature work.
10. high-powered LED lamp according to claim 6, is characterized in that, it also comprises temperature control module, and described temperature control module is connected with temperature measuring equipment, excitation unit signal, is used for controlling work opportunity of excitation unit and mode of operation.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510144611.8A CN104748012A (en) | 2015-03-28 | 2015-03-28 | Large-power LED lamp |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510144611.8A CN104748012A (en) | 2015-03-28 | 2015-03-28 | Large-power LED lamp |
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| Publication Number | Publication Date |
|---|---|
| CN104748012A true CN104748012A (en) | 2015-07-01 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
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| CN201510144611.8A Pending CN104748012A (en) | 2015-03-28 | 2015-03-28 | Large-power LED lamp |
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Citations (7)
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|---|---|---|---|---|
| CN201521930U (en) * | 2009-11-12 | 2010-07-07 | 岳国伟 | Radiator with low-temperature and high radiation ceramic radiating coating |
| CN101943346A (en) * | 2010-09-30 | 2011-01-12 | 毛有强 | Lightweight high-efficient radiating LED lamp |
| CN102317710A (en) * | 2009-02-17 | 2012-01-11 | 制冷技术应用股份有限公司 | Magnetocaloric heat generator |
| CN102352976A (en) * | 2011-10-25 | 2012-02-15 | 武汉华炬光电有限公司 | High-power integrated type light emitting diode (LED) high-efficiency radiating lamp |
| CN102711332A (en) * | 2012-06-12 | 2012-10-03 | 哈尔滨工业大学 | Light-emitting diode (LED) outdoor lighting lamp driving power supply working in low-temperature environment |
| CN102734977A (en) * | 2012-05-31 | 2012-10-17 | 华中科技大学 | Magnetic refrigerating device based on repetitive pulsed magnetic field |
| CN103423648A (en) * | 2013-08-29 | 2013-12-04 | 顺德职业技术学院 | Magnetic-fluid heat-pipe high-power LED (Light Emitting Diode) lamp |
-
2015
- 2015-03-28 CN CN201510144611.8A patent/CN104748012A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102317710A (en) * | 2009-02-17 | 2012-01-11 | 制冷技术应用股份有限公司 | Magnetocaloric heat generator |
| CN201521930U (en) * | 2009-11-12 | 2010-07-07 | 岳国伟 | Radiator with low-temperature and high radiation ceramic radiating coating |
| CN101943346A (en) * | 2010-09-30 | 2011-01-12 | 毛有强 | Lightweight high-efficient radiating LED lamp |
| CN102352976A (en) * | 2011-10-25 | 2012-02-15 | 武汉华炬光电有限公司 | High-power integrated type light emitting diode (LED) high-efficiency radiating lamp |
| CN102734977A (en) * | 2012-05-31 | 2012-10-17 | 华中科技大学 | Magnetic refrigerating device based on repetitive pulsed magnetic field |
| CN102711332A (en) * | 2012-06-12 | 2012-10-03 | 哈尔滨工业大学 | Light-emitting diode (LED) outdoor lighting lamp driving power supply working in low-temperature environment |
| CN103423648A (en) * | 2013-08-29 | 2013-12-04 | 顺德职业技术学院 | Magnetic-fluid heat-pipe high-power LED (Light Emitting Diode) lamp |
Non-Patent Citations (1)
| Title |
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| 陈景华: "《材料工程测试技术》", 31 October 2006 * |
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Application publication date: 20150701 |
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