CN101922629A - Liquid cooling LED light source and possess the solar cell evaluation device of liquid cooling LED light source - Google Patents
Liquid cooling LED light source and possess the solar cell evaluation device of liquid cooling LED light source Download PDFInfo
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- CN101922629A CN101922629A CN2010102053895A CN201010205389A CN101922629A CN 101922629 A CN101922629 A CN 101922629A CN 2010102053895 A CN2010102053895 A CN 2010102053895A CN 201010205389 A CN201010205389 A CN 201010205389A CN 101922629 A CN101922629 A CN 101922629A
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- 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
- Y02B10/00—Integration of renewable energy sources in buildings
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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
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Abstract
The invention provides liquid cooling LED light source and possess the solar cell evaluation device of liquid cooling LED light source.As problem, the temperature of LED is kept the liquid cooling LED light source that the color spot of constant output change that can suppress LED and irradiates light produces and can use this liquid cooling LED light source to estimate the solar cell evaluation device of the output characteristics of solar cell accurately thereby provide.As solution, liquid cooling LED light source (1) has liquid cooling unit (5), liquid cooling unit (5) has liquid-cooled jacket (15) and circulating pump (18), on a face of the described liquid-cooled jacket (15) of this liquid cooling unit (5), be provided with light source cell (3), on another face of this liquid-cooled jacket (15), be provided with the control circuit (4) of described LED with the different a plurality of LED of emission wavelength.Shine the simulated solar irradiation of the led light source portion ejaculation of blocking to solar cell, estimate the output characteristics of solar cell from disposing a plurality of these liquid cooling LED light sources (1).
Description
Technical field
The present invention relates to penetrate the liquid cooling LED light source of simulated solar irradiation and solar cell evaluation device with liquid cooling LED light source from the different a plurality of LED of emission wavelength.
Background technology
As everyone knows, solar cell is means effectively utilizing solar energy, in practical application, on roof by solar battery panel being laid on mansion or common house etc., convert solar energy to electric energy, wherein, solar battery panel is to be made of the solar module that a plurality of solar cells of connection form.
In addition, in the inspection after the manufacturing of solar cell and the research and development of solar cell, the output characteristics of estimating solar cell is crucial, but, because sun light intensity changes because of weather etc., therefore, by carrying out its evaluation, be difficult to obtain all the time result accurately to solar cell irradiation sunshine.
Therefore, patent documentation 1 has proposed to use the evaluation method of LED as the solar cell of light source.This method is: to the light of solar cell irradiation from the multi-wavelength LED illuminating part, according to from the irradiates light intensity (W) of each wavelength of multi-wave length illuminating portion and each wavelength output short circuit current (A), measure the absolute spectral sensitivity (A/W) of solar cell at solar cell.
In addition, patent documentation 2 has proposed the output assay method, and this output assay method is used to estimate the output of photo-electric conversion elements such as solar cell under normal condition that stacked a plurality of key elements unit forms.
Patent documentation 1: TOHKEMY 2004-281706 communique
Patent documentation 2: TOHKEMY 2006-135196 communique
But, in patent documentation 1,2, light because of LED and experimental enviroment reaches the countermeasure (cooling unit etc. for example be set) of room temperature when above at the temperature of LED, do not do any open.
Generally speaking, the luminous efficiency of LED rises with temperature and reduces, and therefore, when the LED temperature rose, from the output change of this LED, existence can't be estimated the problem of the output characteristics of solar cell accurately.
And, especially under the situation of using the different LED element of glow color, because the characteristic difference of temperature-luminous efficiency of the LED of different colours, therefore, when the LED temperature rises, will produce the color spot of irradiates light, can't estimate the output characteristics of solar cell accurately.
Summary of the invention
The present invention finishes just in view of the above problems, its purpose is, the liquid cooling LED light source that provides a kind of color spot that the temperature of LED can be remained constant, as to suppress this LED output change and irradiates light to produce, and a kind of solar cell evaluation device that can use this liquid cooling LED light source to estimate the output characteristics of solar cell accurately is provided.
To achieve these goals, the invention of first aspect record is characterised in that, constitute liquid cooling LED light source in the following way: this liquid cooling LED light source has liquid cooling unit, this liquid cooling unit has liquid-cooled jacket and circulating pump, a face of the described liquid-cooled jacket of this liquid cooling unit is provided with the different a plurality of LED of emission wavelength, and another face of this liquid-cooled jacket is provided with control circuit or the described circulating pump of described LED.
The invention of second aspect record is characterised in that, the solar cell irradiation simulated solar irradiation of solar cell evaluation device in being housed in laboratory, estimate the output characteristics of described solar cell, having of this solar cell evaluation device disposed the described liquid cooling LED light source of a plurality of first aspects and the led light source portion of blocking, as the light source to described solar cell irradiation simulated solar irradiation.
The invention of third aspect record is characterised in that, in the invention of second aspect record, on another face of the described liquid-cooled jacket of each liquid cooling LED light source that constitutes described led light source portion, is respectively equipped with described control circuit.
The invention of fourth aspect record is characterised in that, in the invention of second aspect record, on another face of the described liquid-cooled jacket of each liquid cooling LED light source that constitutes described led light source portion, be respectively equipped with described circulating pump, and, be provided with the shared control circuit of all liquid cooling LED light sources.
The invention of the 5th aspect record is characterised in that, in the invention of second～fourth aspect record, between described solar cell in described laboratory and the described led light source portion, dispose transparent component, this transparent component makes passing through from the simulated solar light transmission of described led light source portion and blocking-up moisture.
According to the described invention of first aspect, by the cooling water that in the liquid-cooled jacket of liquid cooling unit, flows, control circuit or circulating pump as a plurality of LED of pyrotoxin are forced cooling, therefore, the temperature that has prevented LED rises, make the temperature of LED keep constant, suppressed the generation of the color spot of the output change of this LED and irradiates light.
According to the described invention of second aspect, the led light source portion of blocking estimates the output characteristics of solar cell to solar cell irradiation simulated solar irradiation by disposing a plurality of liquid cooling LED light sources, therefore, suppress the output change of simulated solar irradiation and the generation of color spot, can estimate the output characteristics of solar cell accurately.
According to the described invention of the third aspect, can force cooling to the LED and the control circuit that are arranged in each liquid cooling LED light source that constitutes led light source portion by the cooling water that in liquid-cooled jacket, flows, make their temperature keep constant.
According to the described invention of fourth aspect, can light control to what all LED unified by the shared control circuit of all liquid cooling LED light sources, and it is this control circuit is external in the mode of separating with LED, in each liquid cooling LED light source, can force cooling to LED on two faces that are configured in liquid-cooled jacket and circulating pump by cooling fluid, make their temperature keep constant.
According to the described invention in the 5th aspect, blocked the intrusion of the moisture in the laboratory by transparent component to led light source portion, therefore, led light source portion can not realize the steady operation of this led light source portion because of moisture is adversely affected.In this case, the simulated solar light transmission transparent component from led light source portion stably shines on the solar cell.
Description of drawings
Fig. 1 is the stereogram of the liquid cooling LED light source of embodiments of the present invention 1.
Fig. 2 is the front elevation (figure of the arrow A direction of Fig. 1) of the liquid cooling LED light source of embodiments of the present invention 1.
Fig. 3 is the side view (figure of the arrow B direction of Fig. 1) of the liquid cooling LED light source of embodiments of the present invention 1.
Fig. 4 is the C-C line profile of Fig. 3.
Fig. 5 is the D-D line profile of Fig. 3.
Fig. 6 is the plane that the configuration of various LED on substrate is shown.
Fig. 7 is the figure that temperature and the relation between the drive current of LED are shown.
Fig. 8 is the stereogram of structure that the solar cell evaluation device of embodiments of the present invention 1 is shown.
Fig. 9 is the stereogram of structure that the solar cell evaluation device of embodiments of the present invention 2 is shown.
Figure 10 is the side view of the liquid cooling LED light source of embodiments of the present invention 2.
Figure 11 is the E-E line profile of Figure 10.
Label declaration
1,1 ' liquid cooling LED light source; 2 shells; 3 light source cells; 4,4 ' control circuit; 5 liquid cooling units; 6 air inlets; 7 exhaust outlets; 8a～8d LED; 9 substrates; 10 pedestals; 11 lens; 12 circuit housings; 13 lids; 14 heat radiation pins (pin); 15 liquid-cooled jackets; 19 liquid reserve tanks; 20,20 ' solar cell evaluation device; 21 laboratories; 22 solar cells; 23,23 ' led light source portion.
The specific embodiment
Below, with reference to the accompanying drawings, embodiments of the present invention are described.
＜embodiment 1 〉
Fig. 1 is the stereogram of the liquid cooling LED light source of embodiments of the present invention 1, Fig. 2 is the front elevation (figure of the arrow A direction of Fig. 1) of this liquid cooling LED light source, Fig. 3 is the side view (figure of the arrow B direction of Fig. 1) of this liquid cooling LED light source, Fig. 4 is the C-C line profile of Fig. 3, Fig. 5 is the D-D line profile of Fig. 3, and Fig. 6 is the plane that the configuration of various LED on substrate is shown.Fig. 7 is the figure that temperature and the relation between the drive current of LED are shown.
As Fig. 4 and shown in Figure 5, liquid cooling LED light source 1 of the present invention is to constitute by the inside that light source cell 3, control circuit 4 and liquid cooling unit 5 is assembled into the shell 2 of rectangular box shape.In addition, the illumination of liquid cooling LED light source 1 is penetrated direction and is the below of Fig. 1, and as described later, this liquid cooling LED light source 1 is configured to its illumination, and to penetrate direction be horizontal direction, the liquid cooling LED light source 1 in the following describes be meant up and down state shown in Figure 1 about.
Above-mentioned shell 2 is made of metals such as resin such as PC or aluminium, as shown in Figure 1, is formed with the air inlet 6 that is made of vertically long a plurality of slits on its side face, is formed with the exhaust outlet 7 that is made of fan-shaped a plurality of slits thereon on the surface.In addition, the lower surface of this shell 2 is openings, and above-mentioned light source cell 3 is fixed in this peristome with embedding.
As Fig. 4 and shown in Figure 5, above-mentioned light source cell 3 constitutes and comprises: install as 4 kinds of different LED 8a, 8b of emission wavelength (emission wavelength is between 0.3 μ m～1.5 μ m) of light source, the substrate 9 that 8c, 8d (with reference to Fig. 6) form; The pedestal 10 of the rectangular plate shape of this substrate 9 is installed; And the transparent resinous lens 11 that are embedded in the rectangular plate shape in the lower surface peristome of shell 2.
Here, in the different LED 8a～8d of emission wavelength, LED 8a is infrared (wavelength 850nm) LED of GaALAs system, LED 8b is ultraviolet (wavelength 365nm) LED of GaN system, LED 8c is redness (wavelength 630nm) LED of GaAlAs system, LED 8d is blueness (wavelength 455nm) LED of GaN system, and as shown in Figure 6, these LED are configured on the substrate 9.In addition, Fig. 7 show these LED 8a～8d temperature (℃) and drive current (A) between relation, as can be known, when temperature surpassed 50 ℃, the drive current that flows into each LED 8a～8d reduced from this figure, the use maximum temperature of each LED 8a～8d is 80 ℃.Here, the temperature of LED 8a～8d is meant the temperature at paster junction surface, i.e. junction temperature.
In addition, in above-mentioned control circuit 4, as shown in Figure 4, the inside at the circuit housing 12 of the rectangular box shape of lower surface opening is assembled with the not shown circuit substrate that various electronic units are installed.Here, circuit housing 12 is formed by the high shapings such as aluminium die-casting material of thermal conductivity, on the surface, gives prominence to being provided with a plurality of heat radiation pins (pin) 14 that constitute radiating part integratedly thereon.
As Fig. 4 and shown in Figure 5, above-mentioned liquid cooling unit 5 has: as the liquid-cooled jacket 15 of heat exchanger; Radiator 16, its by and extraneous air (cooling air) between heat exchange, the cooling fluid that temperature raises to being heated in this liquid-cooled jacket 15 is cooled off; The fan 17 of cooling air is provided to this radiator 16; The circulating pump 18 that cooling fluid is circulated in the circulating path of closed loop; And the liquid reserve tank 19 that stores cooling fluid.Fan 17 disposes above it in the face of radiator 16.
In the present embodiment, as Fig. 4 and shown in Figure 5, liquid-cooled jacket 15 flatly is configured in the bottom of the below in the shell 2, across this liquid-cooled jacket 15, descends configuration control circuit 4 and light source cell 3 thereon.Here, control circuit 4 is configured in the upper surface side of this liquid-cooled jacket 15 under the state of the upper surface fluid-tight engagement of its lid 13 and liquid-cooled jacket 15.In addition, in the present embodiment, use the anti-icing fluid that in water, mixes propane diols and form, as cooling fluid.
On the other hand, as Fig. 4 and shown in Figure 5, above-mentioned radiator 16 and fan 17 are configured in the top of separating with liquid-cooled jacket 15 of shell 2, in the spatial portion between liquid-cooled jacket 15 and radiator 16, and configuration control circuit 4, circulating pump 18 and liquid reserve tank 19.
And, when the liquid cooling LED light source 1 that has started above structure and when light source cell 3, control circuit 4 and liquid cooling unit 5 power supplies, the different 4 kinds of LED8a～8d of the emission wavelength of light source cell 3 are luminous, the simulated solar light transmission lens 11 that versicolor light forms through synthesizing are towards the below irradiation of Fig. 1.At this moment, carry out the control of lighting of light source cell 3 by control circuit 4, in the driving process, the heating of the various electronic units (not shown) of the LED 8a～8d of light source cell 3 and control circuit 4, if continue this state, can cause light source cell 3 and control circuit 4 overheated and temperature is risen.As mentioned above, when the temperature of the various LED 8a～8d of light source cell 3 rose, luminous efficiency reduced, and in addition, as shown in Figure 7, supply current also reduces.
But, in the present embodiment, drive liquid cooling unit 5 simultaneously, light source cell 3 and control circuit 4 are forced cooling, suppress their temperature and rise by the cooling fluid that in the circulating path that forms closed loop, circulates.
Promptly, the cooling fluid that in circulating path, circulates by the effect of circulating pump 18, absorb the heat that light source cell 3 and control circuit 4 produce in liquid-cooled jacket 15, light source cell 3 and control circuit 4 are cooled off, the cooling fluid that the back temperature of being heated raises is directed in the radiator 16.
On the other hand, when fan 17 has carried out the rotation driving by not shown motor, with the air inlet 6 of extraneous air from the side face that is formed on shell 2, be drawn in the shell 2 from the side, in the spatial portion that this cooling air forms between liquid-cooled jacket 15 and radiator 16 towards above flow, in this process, pass radiator 16, the exhaust outlet of offering from the upper surface of shell 27 is discharged to the outside.Then, in radiator 16, by the cooling air that passes here the heat of cooling fluid is discharged into the outside, this cooling water is cooled off, the cooling fluid after temperature descends is inhaled in the circulating pump 18.
Be drawn into cooling fluid in the circulating pump 18 after boosting, be transported to liquid reserve tank 19 from circulating pump 18, its part is stored in the liquid reserve tank 19, and remaining cooling fluid is directed to liquid-cooled jacket 15 from liquid reserve tank 19, is used for light source cell 3 and control circuit 4 are cooled off.Then, repeat above effect (cool cycles) continuously, by the cooling fluid that flows, light source cell 3 and control circuit 4 are forced cooling in liquid-cooled jacket 15, their temperature is risen to be suppressed at below the certain value.In addition, in the present embodiment, because the lower surface and liquid-cooled jacket 15 fluid-tight engagement of control circuit 4, and be provided with a plurality of heat radiation pins 14 that constitute radiating part thereon on the surface highlightedly, therefore, control circuit 4 also carries out natural heat dissipation by heat radiation pin 14 when being forced to cool off by cooling fluid, thereby this control circuit 4 has obtained cooling efficiently, and its temperature rises and obtained more effective inhibition.
Rise by the temperature that prevents each LED 8a～8d with upper type, make its temperature keep constant, its result has suppressed the output change of each LED 8a～8d and as the generation of the color spot of the simulated solar irradiation of irradiates light.And in the led light source portion 23 of each blocking, 15 couples of each LED 8a～8d cool off by liquid-cooled jacket, therefore, in each liquid-cooled light source 1, can realize the big value of the power (rated current) of LED 8a～8d, can improve the illumination of irradiates light.
Then, according to Fig. 8, the solar cell evaluation device of embodiments of the present invention 1 is described.
Fig. 8 is the stereogram of structure that the solar cell evaluation device of embodiments of the present invention 1 is shown, the solar cell 22 irradiation simulated solar irradiations of the panel shape of illustrated solar cell evaluation device 20 in the laboratory 21 that is housed in the rectangular box shape, estimate the output characteristics of solar cell 22, this solar cell evaluation device 20 is characterised in that, used led light source portion 23, as the light source to solar cell 22 irradiation simulated solar irradiations, described led light source portion 23 is that liquid cooling LED light source 1 blocking of a plurality of by disposing (being horizontal 6 * vertical 5=30 altogether in the present embodiment) Fig. 1～shown in Figure 5 is formed.Here, though not shown, solar cell 22 in being housed in laboratory 21 and led light source portion 23 and between, dispose and make the transparent components such as quartz glass that pass through from the simulated solar light transmission of led light source portion 23 and blocking-up moisture.
And, solar cell evaluation device 20 shown in Figure 7 is by the experimental enviroment (humidity 10%～100% in regulation, 20 ℃～90 ℃ of temperature) under, carry out via transparent component to the accelerated test of solar cell 22 irradiations from the simulated solar irradiation of led light source portion 23 ejaculations, estimate the output characteristics of this solar cell 2, in the present embodiment, because the led light source portion 23 that is the blocking by having disposed a plurality of Fig. 1～liquid cooling LED light source 1 shown in Figure 5 is to solar cell 22 irradiation simulated solar irradiations, therefore, as mentioned above, the temperature of the various LED 8a～8d (with reference to Fig. 6) of each liquid cooling LED light source 1 is retained as constant.Therefore, suppress the output change of the simulated solar irradiation that penetrates from LED illuminating part 23 and the generation of color spot, can estimate the output characteristics of solar cell 22 accurately.
In addition, in the present embodiment, solar cell 22 in being housed in laboratory 21 and led light source portion 23 and between, dispose transparent components such as quartz glass, therefore, this transparent component has been blocked moisture in the laboratory 21 to the intrusion of led light source portion 23, thereby led light source portion 23 can not realize the steady operation of this led light source portion 23 because of moisture is adversely affected.In this case, the simulated solar light transmission transparent component from led light source portion 23 stably shines on the solar cell 22.
＜embodiment 2 〉
Then, according to Fig. 9～Figure 11, embodiments of the present invention 2 are described.
Fig. 9 is the stereogram of structure that the solar cell evaluation device of embodiments of the present invention 2 is shown, and Figure 10 is the side view of the liquid cooling LED light source of embodiments of the present invention 2, and Figure 11 is the E-E line profile of Figure 10.And, in Fig. 9～Figure 11,, and hereinafter, omit repeat specification to them to the element annotation same numeral identical with Fig. 1～Fig. 6.
The solar cell evaluation device 20 ' of present embodiment is identical with above-mentioned embodiment 1, the solar cell 22 that also is the panel shape in the laboratory 21 that is housed in the rectangular box shape shines the output characteristics that simulated solar irradiations are estimated solar cell 22, and used led light source portion 23 ', as the light source to solar cell 22 irradiation simulated solar irradiations, this led light source portion 23 ' is that a plurality of by disposing (in the present embodiment for horizontal 6 * vertical 5=amount to 30) Figure 10 and liquid cooling LED light source 1 ' shown in Figure 11 carry out blocking and form.In addition, though not shown, between the solar cell 22 and led light source portion 23 ' in being housed in laboratory 21, dispose and make the transparent components such as quartz glass that pass through from the simulated solar light transmission of led light source portion 23 ' and blocking-up moisture.
And, as described in Figure 9, the liquid cooling LED light source 1 ' of present embodiment is provided with 1 shared control circuit 4 ' of all liquid cooling LED light sources 1 ' in external mode, therefore, the control circuit 4 (with reference to Fig. 4) of above-mentioned embodiment is not set in each liquid cooling LED light source 1 '.
Here, according to Figure 10 and Figure 11, the structure of the liquid cooling LED light source 1 ' that constitutes led light source portion 23 ' is described.
In the liquid cooling LED light source 1 ' of present embodiment, in shell 2, contain light source cell 3 and liquid cooling unit 5, light source cell 3 is configured on the face (lower surface among Figure 11) of liquid-cooled jacket 15 of a part that constitutes liquid cooling unit 5, on another face (upper surface among Figure 11) of this liquid-cooled jacket 15, configuration cycles pump 18.
And, in the liquid cooling LED light source 1 ' of present embodiment, light source cell 3 and circulating pump 18 as pyrotoxin are forced cooling by the cooling fluid that in liquid-cooled jacket 15, flows, their temperature is risen to be suppressed at below the certain value.Therefore, prevented that the temperature of each LED 8a～8d of light source 3 from rising, made its temperature keep constant, consequently, suppressed the output change of each LED 8a～8d and as the generation of the color spot of the simulated solar irradiation of irradiates light.
And, solar cell evaluation device 20 ' shown in Figure 9 has used and has disposed a plurality of Figure 10 and liquid cooling LED light source 1 ' shown in Figure 11 and the led light source portion 23 ' of blocking, as light source, estimate the output characteristics of this solar cell 22 from the simulated solar irradiation of led light source portion 23 ' ejaculation to solar cell 22 irradiations, as mentioned above, because the temperature of the various LED 8a～8d (with reference to Fig. 6) of each liquid cooling LED light source 1 ' is retained as constant, therefore, the output change of the simulated solar irradiation that penetrates from LED illuminating part 23 ' and the generation of color spot can be suppressed, the output characteristics of solar cell 22 can be estimated accurately.
In addition, in the present embodiment, can light control to what all LED 8a～8d unified by the shared control circuit 4 ' of all liquid cooling LED light sources 1 ', and as shown in Figure 9, in the mode of separating that this control circuit 4 ' is external with LED 8a～8d, in each liquid cooling LED light source 1 ', by cooling fluid LED 8a～8d on two faces that are configured in liquid-cooled jacket 15 and circulating pump 18 are forced cooling, can make their temperature keep constant.
In addition, the configuration of various LED on substrate of each liquid cooling LED light source is not limited to the form shown in the above embodiment, can set arbitrarily.
Claims (5)
1. a liquid cooling LED light source is characterized in that,
This liquid cooling LED light source has liquid cooling unit, this liquid cooling unit has liquid-cooled jacket and circulating pump, a face of the described liquid-cooled jacket of this liquid cooling unit is provided with the different a plurality of LED of emission wavelength, and another face of this liquid-cooled jacket is provided with control circuit or the described circulating pump of described LED.
2. solar cell evaluation device, its solar cell irradiation simulated solar irradiation in being housed in laboratory is estimated the output characteristics of described solar cell, and this solar cell evaluation device is characterised in that,
This solar cell evaluation device has and has disposed the described liquid cooling LED light source of a plurality of claims 1 and the led light source portion of blocking, as the light source to described solar cell irradiation simulated solar irradiation.
3. solar cell evaluation device according to claim 2 is characterized in that,
On another face of the described liquid-cooled jacket of each liquid cooling LED light source that constitutes described led light source portion, be respectively equipped with described control circuit.
4. solar cell evaluation device according to claim 2 is characterized in that,
On another face of the described liquid-cooled jacket of each liquid cooling LED light source that constitutes described led light source portion, be respectively equipped with described circulating pump, and this solar cell evaluation device is provided with the shared control circuit of all liquid cooling LED light sources.
5. according to any described solar cell evaluation device in the claim 2 to 4, it is characterized in that,
Between described solar cell in described laboratory and the described led light source portion, dispose transparent component, this transparent component makes passing through from the simulated solar light transmission of described led light source portion and blocking-up moisture.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
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| JP2009138874A JP2010287647A (en) | 2009-06-10 | 2009-06-10 | Water-cooled led light source, and solar cell evaluation device equipped with the same |
| JP2009-138874 | 2009-06-10 |
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| CN101922629A true CN101922629A (en) | 2010-12-22 |
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| CN102569539A (en) * | 2010-12-24 | 2012-07-11 | 苏州明玖节能科技有限公司 | Design method of special LED (Light-Emitting Diode) radiating device |
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