CN102644869A - LED (light-emitting diode) lamp - Google Patents
LED (light-emitting diode) lamp Download PDFInfo
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- CN102644869A CN102644869A CN2012100919642A CN201210091964A CN102644869A CN 102644869 A CN102644869 A CN 102644869A CN 2012100919642 A CN2012100919642 A CN 2012100919642A CN 201210091964 A CN201210091964 A CN 201210091964A CN 102644869 A CN102644869 A CN 102644869A
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- cooling medium
- led
- radiating part
- inner chamber
- light fixture
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Abstract
The invention provides an LED (light-emitting diode) lamp, comprising an LED reflection cup (10), an LED chip (20), a heat radiating part (30) and a secondary light-emitting part (40), wherein the LED reflection cup comprises a bottom surface and a side wall extends from the bottom surface, and an opening side is formed at the top of the side wall; the LED chip is arranged on the bottom surface of the LED reflection cup (10) facing to the opening side; the heat radiating part (30) is arranged on the opening side of the LED reflection cup (10), the heat radiating part (30) is made from a transparent material, and the heat radiating part (30) is provided with an inner cavity (31) which is used for containing a cooling medium, and the inner cavity (31) is provided with a cooling medium inlet and a cooling medium outlet; and the secondary light-emitting part (40) is arranged in the inner cavity (31) of the heat radiating part (30). By adopting the LED lamp disclosed by the invention, the problems that the LED lamp has a complex heat radiation structure, processing difficulty is high and manufacturing cost is high in the prior art can be effectively solved.
Description
Technical field
The present invention relates to the LED lighting technical field, in particular to a kind of LED light fixture.
Background technology
LED light fixture of the prior art obtains the white light LEDs major part at present and utilizes the blue led chip light emitting to realize through the yellow fluorescent powder back mixing light again owing to the luminous particularity of LED.Can know that from the principle of colorimetry utilize this method to obtain white light, the photochromic temperature that is obtained is most of more than 4500K, the sunshine of being accustomed to most with human eye has very big difference; And the colour rendering index of mixed light is relatively poor, and is not enough to the performance degree of the original looks of object; In addition, because the hangover of yellow fluorescent powder is long and have stronger self-absorption, making has most of luminous energy to transform into heat.If there is not effective heat dissipation, thermal accumlation can be produced whole lamp system long-term work under the higher temperature environment, makes the life-span of light fixture reduce greatly; Fluorescent material is along with temperature rising meeting decrease in efficiency simultaneously, and this can make that also the luminosity curve of light fixture changes, and quality reduces.LED light fixture of the prior art also exists and utilizes semiconductor nano (quantum dot) to replace fluorescent material, but as a rule, along with the rising of temperature, also can there be decline to a certain degree in the fluorescence efficiency of quantum dot, the red shift of simultaneous emission spectrum.In concrete experiment, find, when temperature when room temperature is elevated to 350 degrees centigrade, the luminous efficiency of quantum dot has descended 50%.Thus, quantum dot is quite faint to the regulating effect of light fixture institute bright dipping, and to be used for stablizing whole system very important so design a kind of good heat abstractor.
At present, the heat radiation of LED mainly is to set about from material and structure two aspects.The shell of LED light fixture all adopts metal material, all is the convenience in order to dispel the heat mainly, though copper and silver-colored thermal conductivity are high, however silver-colored expensive, the ratio of copper is great, and is not suitable for producing in batches.Consider then to adopt alveolate texture mostly from structure aspects, but the complex structure manufacture difficulty is high.The heat dissipating method of present both economical practicality is to utilize high heat-conducting ceramic; Because the led chip coefficient of expansion has a long way to go with metal heat-conducting, the heat sink material coefficient of expansion commonly used; Can not led chip directly be welded; In order to avoid high and low temperature thermal stress damage led chip, this kind heat dissipating method manufacture difficulty is high.
In sum, the heat radiation aspect of LED light fixture in the prior art exists the LED lamp cooling structure complicated, and difficulty of processing is high, the problem that involves great expense.
Summary of the invention
The present invention aims to provide a kind of LED light fixture, and to solve LED lamp cooling structure complicacy in the prior art, difficulty of processing is high, the problem that involves great expense.
To achieve these goals, the invention provides a kind of LED light fixture and comprise: the LED reflector comprises the bottom surface and by the upwardly extending sidewall in bottom surface, the top of sidewall is formed with opening surface; Led chip is arranged on the LED reflector on the bottom surface of opening surface; Radiating part is arranged on the opening surface place of LED reflector, and the material of radiating part is a transparent material, and radiating part has the inner chamber that holds cooling medium, and inner chamber has cooling medium inlet and cooling medium outlet; The secondary illuminating part is arranged in the inner chamber of radiating part.
Further, radiating part comprises: feed tube, and first end of feed tube is communicated with the cooling medium inlet of inner chamber; Discharging tube, first end of discharging tube is communicated with the outlet of the cooling medium of inner chamber; Second end of feed tube and second end of discharging tube are connected and constitute the liquid cooling medium circulation line.
Further, also be provided with circulating pump on the cooling medium circulation line.
Further, the secondary illuminating part is fixedly installed on the bottom surface of inner chamber.
Further, between secondary illuminating part and the radiating part for being spirally connected.
Further, bonding between secondary illuminating part and the radiating part through heat-resisting glue-line.
Further, the distance between the bottom surface of cooling medium inlet and inner chamber is less than the distance between the bottom surface of cooling medium outlet and inner chamber.
Further, the secondary illuminating part is phosphor sheet or semiconductor nano wafer.
Further, the opening surface of radiating part sealing LED reflector.
Use technical scheme of the present invention, the LED light fixture comprises: the LED reflector comprises the bottom surface and by the upwardly extending sidewall in bottom surface, the top of sidewall is formed with opening surface; Led chip is arranged on the LED reflector on the bottom surface of opening surface; Radiating part is arranged on the opening surface place of LED reflector, and the material of radiating part is a transparent material, and radiating part has the inner chamber that holds cooling medium, and inner chamber has cooling medium inlet and cooling medium outlet; The secondary illuminating part is arranged in the inner chamber of radiating part.Light that the led chip of LED light fixture sends through the LED reflector after, be radiated on the secondary illuminating part, the secondary illuminating part receives that high-energy photon that led chip sends inspires the light of different-waveband, the secondary illuminating part produces heat in luminous process; The inner chamber of radiating part accommodates cooling medium, and cooling medium absorbs the heat that distributes from led chip after getting into inner chamber by cooling medium inlet, and outlet is flowed out through cooling medium again, accomplishes the heat radiation process to the secondary illuminating part.In radiating part and secondary illuminating part installation process, only need the secondary illuminating part be installed in the inner chamber, radiating part is connected on the opening surface of LED reflector gets final product again, simple in structure and easy for installation; Through heat radiation such as cooling medium with reduce structure material, thereby reduced the cost cost of LED light fixture.
Description of drawings
The Figure of description that constitutes the application's a part is used to provide further understanding of the present invention, and illustrative examples of the present invention and explanation thereof are used to explain the present invention, do not constitute improper qualification of the present invention.In the accompanying drawings:
Fig. 1 shows the internal structure sketch map of the embodiment of LED light fixture of the present invention; And
Fig. 2 shows the schematic top plan view of the LED light fixture of Fig. 1.
The specific embodiment
Need to prove that under the situation of not conflicting, embodiment and the characteristic among the embodiment among the application can make up each other.Below with reference to accompanying drawing and combine embodiment to specify the present invention.
As depicted in figs. 1 and 2, the LED light fixture of present embodiment comprises LED reflector 10, led chip 20, radiating part 30 and secondary illuminating part 40, and LED reflector 10 comprises the bottom surface and by the upwardly extending sidewall in bottom surface; The top of sidewall is formed with opening surface; Led chip 20 is arranged on LED reflector 10 on the bottom surface of opening surface, and radiating part 30 is arranged on the opening surface place of LED reflector 10, and the material of radiating part 30 is a transparent material; And; Radiating part 30 has the inner chamber 31 that holds cooling medium, and inner chamber 31 has cooling medium inlet and cooling medium outlet, and secondary illuminating part 40 is arranged in the inner chamber 31 of radiating part 30.Wherein, the secondary illuminating part 40 of present embodiment is phosphor sheet or semiconductor nano wafer.
Behind the light process LED reflector 10 that the led chip 20 of LED light fixture sends; Be radiated on the secondary illuminating part 40; Secondary illuminating part 40 receives that high-energy photon that led chip 20 is sent inspires the light of different-waveband, and secondary illuminating part 40 produces heat in luminous process; The inner chamber 31 of radiating part 30 accommodates cooling medium, and cooling medium gets into inner chamber 31 backs by cooling medium inlet and absorbs the heat that distributes from led chip 20, and outlet is flowed out through cooling medium again, accomplishes the heat radiation process to secondary illuminating part 40.In radiating part 30 and secondary illuminating part 40 installation processes, only need secondary illuminating part 40 be installed in the inner chamber 31, radiating part 30 is connected on the opening surface of LED reflector 10 gets final product again, simple in structure and easy for installation; Through heat radiation such as cooling medium with reduce structure material, thereby reduced the cost cost of LED light fixture.
Preferably, radiating part 30 comprises feed tube 33 and discharging tube 35, and first end of feed tube 33 is communicated with the cooling medium inlet of inner chamber 31; First end of discharging tube 35 is communicated with the outlet of the cooling medium of inner chamber 31; Second end of feed tube 33 and second end of discharging tube 35 are connected and constitute the liquid cooling medium circulation line.Behind secondary illuminating part 40 luminous generation heats; The portion temperature that liquid cooling medium contacts with secondary illuminating part 40 raises; Its inner generation convection current when wherein fluid temperature raises, when feed tube 33 was communicated with for circulation line with discharging tube 35, inner liquid convection can form circulation automatically; Accomplish the cycle heat radiation process, be applicable to that generally fluid temperature is between 60 ℃ to 70 ℃.And liquid cooling medium forms in inner chamber 31 and circulates, and the surface temperature of secondary illuminating part 40 is kept evenly, can hot-spot not occur and causes secondary illuminating part 40 too fast aging problems.
Preferably, also be provided with circulating pump on the cooling medium circulation line.Temperature at liquid cooling medium reaches under the situation on 70 ℃, need accomplish the heat radiation cyclic process by the power of circulating pump, is provided with like this to make the heat radiation process faster, and radiating effect is better.
Preferably, secondary illuminating part 40 is fixedly installed on the bottom surface of inner chamber 31.The preferred fixed form of present embodiment is bonding through heat-resisting glue-line 50 between secondary illuminating part 40 and the radiating part 30; The heat resisting temperature limit of heat-resisting glue-line 50 is higher, can not cause secondary illuminating part 40 to come off, and is provided with like this to make secondary illuminating part 40 easy for installation; And when needing to change dismounting; Only need heat-resisting glue-line 50 is melted, take out secondary illuminating part 40 then, faster convenience when the maintenance in later stage is handled.Certainly, those skilled in the art can learn that also secondary illuminating part 40 is spirally connected and is fixed on the radiating part 30, can reach easy installation and removal equally, the effect of fixing-stable.
Preferably, the distance between the bottom surface of cooling medium inlet and inner chamber 31 is less than the distance between the bottom surface of cooling medium outlet and inner chamber 31.The outside lower cooling medium of temperature that gets into inner chamber 31 at first contacts secondary illuminating part 40, and absorbs heat, has avoided the cooling medium heat-shift higher with the temperature of inner chamber 31, is provided with like this to make radiating effect better.Preferably, the opening surface of radiating part 30 sealing LED reflectors 10.The shape of radiating part 30 is confirmed according to the shape of LED reflector 10, made appearance better.
Wherein, the shell material therefor of the radiating part 30 of the LED light fixture of present embodiment can be a glass, and heatproof plastics, crystalline ceramics etc. have the transparent high temperature resistant material of good thermoplastic; The material of feed tube 33 and discharging tube 35 used pipes can be glass, heatproof plastics, polytetrafluoroethylene (PTFE), nylon, pottery etc.; Used liquid cooling medium can be the lower water of viscosity coefficient, silicone oil, alkane, alkene etc.; Used heat-resisting glue-line 50 can be fillers such as silica gel, resin; The shape of radiating part 30 can be circular, and ellipse is square etc., can adjust according to the shape of LED reflector 10.
The above is merely the preferred embodiments of the present invention, is not limited to the present invention, and for a person skilled in the art, the present invention can have various changes and variation.All within spirit of the present invention and principle, any modification of being done, be equal to replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (9)
1. a LED light fixture is characterized in that, comprising:
LED reflector (10) comprises the bottom surface and by the upwardly extending sidewall in said bottom surface, the top of said sidewall is formed with opening surface;
Led chip (20) is arranged on said LED reflector (10) on the bottom surface of said opening surface;
Radiating part (30); Be arranged on the opening surface place of said LED reflector (10), the material of said radiating part (30) is a transparent material, and; Said radiating part (30) has the inner chamber (31) that holds cooling medium, and said inner chamber (31) has cooling medium inlet and cooling medium outlet;
Secondary illuminating part (40) is arranged in the inner chamber (31) of said radiating part (30).
2. LED light fixture according to claim 1 is characterized in that, said radiating part (30) comprising:
Feed tube (33), first end of said feed tube (33) is communicated with the cooling medium inlet of said inner chamber (31);
Discharging tube (35), first end of said discharging tube (35) is communicated with the cooling medium outlet of said inner chamber (31);
Second end of second end of said feed tube (33) and said discharging tube (35) is connected and constitutes the liquid cooling medium circulation line.
3. LED light fixture according to claim 2 is characterized in that, also is provided with circulating pump on the said cooling medium circulation line.
4. LED light fixture according to claim 2 is characterized in that, said secondary illuminating part (40) is fixedly installed on the bottom surface of said inner chamber (31).
5. LED light fixture according to claim 4 is characterized in that, between said secondary illuminating part (40) and the said radiating part (30) for being spirally connected.
6. LED light fixture according to claim 4 is characterized in that, and is bonding through heat-resisting glue-line (50) between said secondary illuminating part (40) and the said radiating part (30).
7. LED light fixture according to claim 4 is characterized in that, the distance between the bottom surface of said cooling medium inlet and said inner chamber (31) is less than the distance between the bottom surface of said cooling medium outlet and said inner chamber (31).
8. LED light fixture according to claim 1 is characterized in that, said secondary illuminating part (40) is phosphor sheet or semiconductor nano wafer.
9. LED light fixture according to claim 1 is characterized in that, the opening surface of said radiating part (30) the said LED reflector of sealing (10).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210091964.2A CN102644869B (en) | 2012-03-30 | 2012-03-30 | LED (light-emitting diode) lamp |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210091964.2A CN102644869B (en) | 2012-03-30 | 2012-03-30 | LED (light-emitting diode) lamp |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102644869A true CN102644869A (en) | 2012-08-22 |
| CN102644869B CN102644869B (en) | 2015-03-25 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210091964.2A Active CN102644869B (en) | 2012-03-30 | 2012-03-30 | LED (light-emitting diode) lamp |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105864650A (en) * | 2016-04-10 | 2016-08-17 | 何忠亮 | LED module and manufacturing method thereof |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE202004013647U1 (en) * | 2004-09-01 | 2005-03-17 | Quinten Margret | Illumination unit, e.g. halogen source, has housing that is entirely made of plastic, ceramic or steel or made of steel and coated with plastic; housing has water inlet and outlet, no cooling ribs and can be fitted with reflector |
| CN101042230A (en) * | 2007-04-29 | 2007-09-26 | 东莞市科锐德数码光电科技有限公司 | Ultrahigh-power LED light and manufacturing method thereof |
| CN201916756U (en) * | 2010-12-27 | 2011-08-03 | 杭州纳晶科技有限公司 | Nanocrystalline illuminating lamp |
| CN202024143U (en) * | 2011-03-08 | 2011-11-02 | 建准电机工业股份有限公司 | Led lamp |
-
2012
- 2012-03-30 CN CN201210091964.2A patent/CN102644869B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE202004013647U1 (en) * | 2004-09-01 | 2005-03-17 | Quinten Margret | Illumination unit, e.g. halogen source, has housing that is entirely made of plastic, ceramic or steel or made of steel and coated with plastic; housing has water inlet and outlet, no cooling ribs and can be fitted with reflector |
| CN101042230A (en) * | 2007-04-29 | 2007-09-26 | 东莞市科锐德数码光电科技有限公司 | Ultrahigh-power LED light and manufacturing method thereof |
| CN201916756U (en) * | 2010-12-27 | 2011-08-03 | 杭州纳晶科技有限公司 | Nanocrystalline illuminating lamp |
| CN202024143U (en) * | 2011-03-08 | 2011-11-02 | 建准电机工业股份有限公司 | Led lamp |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105864650A (en) * | 2016-04-10 | 2016-08-17 | 何忠亮 | LED module and manufacturing method thereof |
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| CN102644869B (en) | 2015-03-25 |
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Address after: 310052, Hangzhou, Zhejiang province Binjiang District Qiu Yi Road No. 1, 500, 4 floor Applicant after: NNCRYSTAL COMPANY Address before: Hangzhou City, Zhejiang province Binjiang District 310052 Spring Road No. 1576 Building 1 layer 4 Applicant before: Hangzhou Najing Technology Ltd. |
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Free format text: CORRECT: APPLICANT; FROM: HANGZHOU NAJING TECHNOLOGY CO., LTD. TO: NNCRYSTAL TECHNOLOGY CO., LTD. |
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