CN110985999A - High-power-density light-emitting device adopting circulating fluorescent liquid - Google Patents
High-power-density light-emitting device adopting circulating fluorescent liquid Download PDFInfo
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- CN110985999A CN110985999A CN201911289229.0A CN201911289229A CN110985999A CN 110985999 A CN110985999 A CN 110985999A CN 201911289229 A CN201911289229 A CN 201911289229A CN 110985999 A CN110985999 A CN 110985999A
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- 239000007788 liquid Substances 0.000 title claims abstract description 68
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N silicon dioxide Inorganic materials O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 40
- 239000000741 silica gel Substances 0.000 claims description 28
- 229910002027 silica gel Inorganic materials 0.000 claims description 28
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 12
- 229910052802 copper Inorganic materials 0.000 claims description 12
- 239000010949 copper Substances 0.000 claims description 12
- 239000000843 powder Substances 0.000 claims description 11
- 239000010453 quartz Substances 0.000 claims description 11
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 claims description 7
- 239000000758 substrate Substances 0.000 claims description 7
- 238000001816 cooling Methods 0.000 claims description 4
- 239000012046 mixed solvent Substances 0.000 claims description 4
- 239000003960 organic solvent Substances 0.000 claims description 4
- 239000004094 surface-active agent Substances 0.000 claims description 4
- 239000002904 solvent Substances 0.000 claims description 3
- 235000009537 plain noodles Nutrition 0.000 claims description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 2
- 229910052681 coesite Inorganic materials 0.000 claims 1
- 229910052906 cristobalite Inorganic materials 0.000 claims 1
- 239000000377 silicon dioxide Substances 0.000 claims 1
- 229910052682 stishovite Inorganic materials 0.000 claims 1
- 229910052905 tridymite Inorganic materials 0.000 claims 1
- 230000006378 damage Effects 0.000 abstract description 4
- 239000000463 material Substances 0.000 description 5
- 239000000243 solution Substances 0.000 description 4
- 238000003756 stirring Methods 0.000 description 4
- 230000005284 excitation Effects 0.000 description 3
- 230000017525 heat dissipation Effects 0.000 description 3
- 238000005286 illumination Methods 0.000 description 3
- 238000004806 packaging method and process Methods 0.000 description 3
- 238000005054 agglomeration Methods 0.000 description 2
- 230000002776 aggregation Effects 0.000 description 2
- 239000003086 colorant Substances 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 239000004065 semiconductor Substances 0.000 description 2
- 238000009825 accumulation Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 239000004020 conductor Substances 0.000 description 1
- 238000005336 cracking Methods 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000012454 non-polar solvent Substances 0.000 description 1
- 238000012536 packaging technology Methods 0.000 description 1
- 230000002572 peristaltic effect Effects 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 238000010791 quenching Methods 0.000 description 1
- 230000000171 quenching effect Effects 0.000 description 1
- 238000009877 rendering Methods 0.000 description 1
- 229920002545 silicone oil Polymers 0.000 description 1
- 230000003595 spectral effect Effects 0.000 description 1
- 230000008646 thermal stress Effects 0.000 description 1
Images
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
- F21V9/00—Elements for modifying spectral properties, polarisation or intensity of the light emitted, e.g. filters
- F21V9/30—Elements containing photoluminescent material distinct from or spaced from the light source
- F21V9/32—Elements containing photoluminescent material distinct from or spaced from the light source characterised by the arrangement of the photoluminescent material
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
- F21V29/00—Protecting lighting devices from thermal damage; Cooling or heating arrangements specially adapted for lighting devices or systems
- F21V29/50—Cooling arrangements
- F21V29/502—Cooling arrangements characterised by the adaptation for cooling of specific components
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
- F21V29/00—Protecting lighting devices from thermal damage; Cooling or heating arrangements specially adapted for lighting devices or systems
- F21V29/50—Cooling arrangements
- F21V29/502—Cooling arrangements characterised by the adaptation for cooling of specific components
- F21V29/503—Cooling arrangements characterised by the adaptation for cooling of specific components of light sources
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
- F21V29/00—Protecting lighting devices from thermal damage; Cooling or heating arrangements specially adapted for lighting devices or systems
- F21V29/50—Cooling arrangements
- F21V29/70—Cooling arrangements characterised by passive heat-dissipating elements, e.g. heat-sinks
- F21V29/74—Cooling arrangements characterised by passive heat-dissipating elements, e.g. heat-sinks with fins or blades
- F21V29/76—Cooling arrangements characterised by passive heat-dissipating elements, e.g. heat-sinks with fins or blades with essentially identical parallel planar fins or blades, e.g. with comb-like cross-section
- F21V29/763—Cooling arrangements characterised by passive heat-dissipating elements, e.g. heat-sinks with fins or blades with essentially identical parallel planar fins or blades, e.g. with comb-like cross-section the planes containing the fins or blades having the direction of the light emitting axis
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Spectroscopy & Molecular Physics (AREA)
- Arrangement Of Elements, Cooling, Sealing, Or The Like Of Lighting Devices (AREA)
- Non-Portable Lighting Devices Or Systems Thereof (AREA)
Abstract
The invention relates to a high-power-density light-emitting device adopting circulating fluorescent liquid, which comprises a light-emitting cavity, a circulating pipeline, an LED light-emitting module and a power pump, wherein two ends of the circulating pipeline are respectively connected with two ends of the light-emitting cavity, the power pump is arranged in the circulating pipeline, and the circulating pipeline and the light-emitting cavity are filled with flowing fluorescent liquid. Compared with the prior art, the LED fluorescent lamp has the advantages that the design that the luminous cavity and the LED luminous module are independent is adopted, the fluorescent liquid is prevented from contacting with the chip, the damage of the fluorescent liquid to the chip is avoided, and the problem of chip scrap caused by overhigh temperature of the fluorescent liquid is solved.
Description
Technical Field
The invention relates to the technical field of semiconductor illumination, in particular to a high-power-density light-emitting device adopting circulating fluorescent liquid.
Background
Because the spectral half-width of the phosphor is much larger than that of a Light Emitting Diode (LED) chip, white LED devices, light sources, and devices are basically implemented by adding a yellow (or red-orange) phosphor to a blue LED chip. In recent years, with the increasing demand for white light performance and quality, more and more attention has been paid to the technology of exciting red, yellow and blue three primary colors or more primary colors by an ultraviolet LED, which can improve the color rendering of white light and the stability during the life.
The most common packaging method of the current LED light emitting device is to directly apply phosphor powder on the surface of the chip by means of dispensing and the like. Because the fluorescent powder is in close contact with the chip, the fluorescent powder can generate a thermal quenching phenomenon under the influence of the junction temperature of the LED chip, so that the important parameters of the LED device, such as luminous efficiency, color quality, service life and the like, are influenced finally.
With the development of semiconductor packaging technology in recent years, the application of the LED in the illumination field is more and more extensive, the LED gradually replaces the market of the traditional light source in the common illumination fields of home, factories, markets, roads and the like, and the LED is continuously developed to be applied in the special field. The power density of LED lighting devices is also increasing. The input power density of the ultraviolet LED light source module currently used in the field of ultraviolet curing production can reach 200W/cm2The above. The light source module is matched with fluorescent powder, so that a white light source with small volume and high brightness can be prepared, and the white light source can be used for application such as a solar simulator. However, such a high power density LED light source inevitably brings a lot of heat, thereby further aggravating the heat accumulation effect of the phosphor. High power produced by Schneider et alA457 nm blue light module is adopted to excite a remote fluorescent plate of the density white light LED device. The blue light module is formed by densely arranging 98 LEDs in series and packaging, and the light emitting area is 2.11cm2Adjustable working current, maximum current of 3A, maximum input power density of 595W/cm2. When the working current of the light source module is 0.251A, the power is 74.7W, and the input power density is 35.4W/cm2When the temperature is higher than 200 ℃, the temperature of the central position of the fluorescent plate is 60 ℃. Such large temperature differences will generate large thermal stresses, leading to cracking of the phosphor plate, affecting life and performance. Therefore, in the high power density LED light emitting device, it is necessary to dissipate heat from the fluorescent material to ensure stable performance of the whole device.
For example, chinese patent CN208138889U discloses a fluorescent liquid laser light emitting device, which is characterized in that: the LED fluorescent lamp comprises a main cavity, a stirring pump, a lens, a circuit board, an LED excitation light source and a liquid fluorescent material; the main cavity comprises a base, a cylindrical cavity with an upward opening is fixedly arranged at the top of the base, a lens is hermetically bonded at the top of the cavity, a liquid inlet and a liquid outlet are formed in opposite ends of the side surface of the cavity, the liquid inlet and the liquid outlet are respectively connected with two ends of a fluorescent liquid guide pipe, a stirring pump is connected to the fluorescent liquid guide pipe, and a fluorescent liquid injection port is formed in the stirring pump; the circuit board is fixedly arranged on the top of the base inside the cylindrical cavity through the circuit board supporting columns, and the top of the circuit board is fixedly welded with the LED excitation light sources and is conducted with the LED excitation light sources; the liquid fluorescent material is filled in the cylindrical cavity and the fluorescent liquid guide pipe. However, the fluorescent liquid laser light emitting device still has the following disadvantages: 1. the heat dissipation capability is insufficient, the improvement of the power density of the LED is limited, and when the inventor carries out 100W/cm 22, the control mode of a simple stirring pump is single, and only the output can be carried out according to the specified power, so that the working temperature interval can be adjusted only by injecting fluorescent liquid and discharging redundant fluorescent liquid, and the mode can not realize non-stop adjustment, so that the application scene is very single; 3. fluorescent liquidCan contact with the chip, consequently can lead to causing the destruction to the chip after the fluorescent solution temperature is too high to lead to once the trouble just to make whole illuminator scrap, in addition, also have the restriction to the selection of the variety of fluorescent solution, some have an influence but the fluorescent solution of better performance can't obtain using to the circuit board.
Disclosure of Invention
The present invention is directed to overcoming the above-mentioned drawbacks of the prior art and providing a high power density light emitting device using a circulating fluorescent liquid.
The purpose of the invention can be realized by the following technical scheme:
the utility model provides an adopt high power density illuminator of circulation fluorescence liquid, includes luminous chamber, circulating line, LED light emitting module and power pump, the both ends in luminous chamber are connected respectively to the both ends of circulating line, the power pump is located in the circulating line, it has mobile fluorescence liquid to fill in circulating line and the luminous chamber, a serial communication port, illuminator still includes the radiator, the circulating line with the radiator contacts, LED light emitting module pastes and locates on the radiator, and go out the plain noodles and paste on luminous surface.
The power pump is a variable frequency pump.
The radiator is a fin type heat sink.
The light-emitting device further comprises a water-cooling module, and the water-cooling module is thermally connected with the radiator.
The LED light-emitting module is an ultraviolet LED light-emitting module.
The LED light-emitting module comprises a substrate, a reflection cavity and an LED chip, wherein the two ends of the reflection cavity are respectively connected with the substrate and the light-emitting cavity, and the LED chip is arranged on the substrate and is positioned in the reflection cavity.
The number of the LED chips is three.
The luminous cavity is quartzy luminous cavity, the circulating line includes copper pipe, first silica gel tube, second silica gel tube, first quartz tube and second quartz tube, the both ends in luminous cavity are connected respectively to the one end of first silica gel tube and second quartz tube, and the other end corresponds through the one end that connects with first silica gel tube and second silica gel tube respectively and is connected, the other end of first silica gel tube passes through the power pump and is connected with the one end of copper pipe, the other end of second silica gel tube is connected with the other end of copper pipe, copper pipe and radiator thermal connection.
And a temperature sensor is arranged at the outlet of the light-emitting cavity.
The fluorescent liquid is prepared by mixing fluorescent powder and gas-phase SiO in base liquid2And a surfactant, wherein the base liquid is an organic solvent, an electrodeless solvent or a mixed solvent.
Compared with the prior art, the invention has the following beneficial effects:
1) adopt the design that luminous cavity and LED light emitting module are independent, avoid the fluorescent liquid to contact with the chip and avoided the destruction of fluorescent liquid to the chip to and the chip that leads to when the fluorescent liquid temperature is too high scraps the problem, the selection of fluorescent liquid is more various, combines heat abstractor, also can realize fluorescent liquid and LED light emitting module sharing radiator, thereby is favorable to also reducing the volume of components and parts when improving radiating.
2) The power pump is a variable frequency pump, and is combined with a temperature sensor, so that the rotating speed can be adjusted according to the instant temperature of the fluorescent liquid, the flow rate is further adjusted, the temperature of the fluorescent liquid is controlled within a proper range, and the fluorescent liquid in the light-emitting cavity can be ensured to stably work within the proper temperature range, so that the light color quality of the high-power-density light-emitting device is improved, and the service life of the light-emitting device is prolonged.
3) The base liquid is organic solvent, non-polar solvent or mixed solvent, and the fluorescent powder and gas-phase SiO are mixed in the base liquid2And the fluorescent liquid prepared by the surfactant enables the fluorescent powder to float in the liquid and avoid agglomeration, thereby increasing the uniformity of light output and the light output amount.
Drawings
FIG. 1 is a schematic structural view of the present invention;
wherein: 1. the LED light-emitting module comprises a light-emitting cavity, 2, an LED light-emitting module, 3, a fin type heat sink, 4, a first quartz tube, 5, a second silica gel tube, 6, a power pump, 7, a copper tube, 8, a joint, 9, fluorescent liquid, 10, a temperature sensor, 11, an LED core, 12, a substrate, 13, a reflection cavity, 14, a first silica gel tube, 15 and a second quartz tube.
Detailed Description
The invention is described in detail below with reference to the figures and specific embodiments. The present embodiment is implemented on the premise of the technical solution of the present invention, and a detailed implementation manner and a specific operation process are given, but the scope of the present invention is not limited to the following embodiments.
A high-power-density light-emitting device adopting circulating fluorescent liquid is shown in figure 1 and comprises a light-emitting cavity 1, a circulating pipeline, an LED light-emitting module 2 and a power pump 6, wherein two ends of the circulating pipeline are respectively connected with two ends of the light-emitting cavity 1, the power pump 6 is arranged in the circulating pipeline, and flowing fluorescent liquid 9 is filled in the circulating pipeline and the light-emitting cavity 1.
The fluorescent liquid 9 flows in the circulating pipeline and shares a heat dissipation device with the light source module to cool, so that the problem that the fluorescent layer in the high-power-density light source device is overheated due to the fact that the fluorescent layer absorbs high-intensity light energy is solved, and meanwhile, the size of components is reduced.
The design that the light-emitting cavity and the LED light-emitting module are independent is adopted, the fluorescent liquid is prevented from contacting with the chip, the damage of the fluorescent liquid to the chip is avoided, the problem of chip scrapping caused by overhigh temperature of the fluorescent liquid is solved, and the fluorescent liquid is more diversified in selection.
The power pump 6 may be a peristaltic pump or a centrifugal pump, but needs to be a variable frequency pump, and in combination with a temperature sensor, the power pump can adjust the rotating speed according to the instant temperature of the fluorescent liquid, so as to adjust the flow rate, control the temperature of the fluorescent liquid within a proper range, ensure that the fluorescent liquid in the light-emitting cavity can stably work within the proper temperature range, and ensure that the temperature of the fluorescent liquid is maintained at 30 ℃, thereby improving the light color quality of the high-power-density light-emitting device and prolonging the service life of the light-emitting device.
The heat sink is a finned heat sink 3, and in another embodiment of the present application, the light emitting device further comprises a water cooling module thermally connected to the heat sink.
The LED light-emitting module 2 is an ultraviolet LED light-emitting module, and the power density of the ultraviolet LED reaches 100W/cm2More than, LED light emitting module 2 includes base plate 12, reflection chamber 13 and LED chip 11, and base plate 12 and luminous chamber 1 are connected respectively to the both ends in reflection chamber 13, and LED chip 11 is located on base plate 12 to be arranged in reflection chamber 13, and base plate 12 is the copper base plate, and LED chip 11 is equipped with threely altogether, and the size is 2.8 x 2.8mm2And rated power 10W.
The light-emitting cavity 1 is a quartz light-emitting cavity, the circulating pipeline is made of a heat conducting material, a single material can be adopted, and the light-emitting cavity can also be formed by combining multiple sections of pipelines made of different materials, matching and packaging with the light-emitting cavity and a power pump are considered, and sufficient heat exchange with a heat dissipation device can be realized, so that the priority is given to the technical scheme, the circulating pipeline comprises a copper pipe 7, a first silica gel tube 14, a second silica gel tube 5, a first silica gel tube 4 and a second silica gel tube 15, one ends of the first silica gel tube 4 and the second silica gel tube 15 are respectively connected with two ends of the light-emitting cavity 1, the other ends of the first silica gel tube 14 and the second silica gel tube 5 are respectively and correspondingly connected with one ends of the first silica gel tube 14 and the second silica gel tube 5 through joints 8, the other end of the first silica gel tube 14 is connected with one end of the copper pipe 7.
The fluorescent liquid is prepared by mixing fluorescent powder and gas-phase SiO in base liquid2And the surface active agent is prepared, wherein the base liquid is an organic solvent, an electrodeless solvent or a mixed solvent, so that the fluorescent powder can float in the liquid and avoid agglomeration, and the light output uniformity and the light output quantity are increased. Preferably, the fluorescent liquid is obtained by dissolving tricolor fluorescent powder in silicone oil according to a proportion.
Claims (10)
1. The utility model provides an adopt high power density illuminator of circulation fluorescence liquid, includes luminous chamber (1), circulating line, LED light emitting module (2) and power pump (6), the both ends of luminous chamber (1) are connected respectively to the both ends of circulating line, power pump (6) are located in the circulating line, it has mobile fluorescence liquid (9) to fill in circulating line and luminous chamber (1), its characterized in that, illuminator still includes the radiator, the circulating line with the radiator contacts, LED light emitting module pastes and locates on the radiator, and go out the plain noodles and paste on luminous chamber (1) surface.
2. The high power density light emitting device using circulating fluorescent liquid as claimed in claim 1, wherein said power pump (6) is a variable frequency pump.
3. The high power density light emitting device using circulating fluorescent liquid as claimed in claim 1, wherein the heat spreader is a finned heat sink (3).
4. The high power density light emitting device using circulating fluorescent liquid as claimed in claim 1, further comprising a water cooling module thermally connected to the heat sink.
5. The high power density light emitting device using circulating fluorescent liquid according to claim 1, wherein the LED light emitting module (2) is an ultraviolet LED light emitting module.
6. The high-power-density light-emitting device adopting the circulating fluorescent liquid as claimed in claim 1 or 5, wherein the LED light-emitting module (2) comprises a substrate (12), a reflective cavity (13) and an LED chip (11), two ends of the reflective cavity (13) are respectively connected with the substrate (12) and the light-emitting cavity (1), and the LED chip (11) is arranged on the substrate (12) and is positioned in the reflective cavity (13).
7. The high power density light emitting device using the circulating fluorescent liquid as set forth in claim 6, wherein the number of the LED chips (11) is three.
8. The high-power-density light-emitting device adopting the circulating fluorescent liquid is characterized in that the light-emitting cavity (1) is a quartz light-emitting cavity, the circulating pipeline comprises a copper pipe (7), a first silica gel tube (14), a second silica gel tube (5), a first quartz tube (4) and a second quartz tube (15), one ends of the first quartz tube (4) and the second quartz tube (15) are respectively connected with two ends of the light-emitting cavity (1), the other ends of the first silica gel tube (4) and the second silica gel tube (15) are respectively correspondingly connected with one ends of the first silica gel tube (14) and the second silica gel tube (5) through joints (8), the other end of the first silica gel tube (14) is connected with one end of the copper pipe (7) through a power pump (6), the other end of the second silica gel tube (5) is connected with the other end of the copper pipe (7), and the copper pipe (7) is thermally connected with a radiator.
9. A high power density light emitting device using circulating fluorescent liquid according to claim 1, characterized in that a temperature sensor (10) is provided at the outlet of the light emitting cavity (1).
10. The high power density light emitting device of claim 1 wherein the phosphor solution is a base solution mixed with phosphor powder and gas phase SiO2And a surfactant, wherein the base liquid is an organic solvent, an electrodeless solvent or a mixed solvent.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911289229.0A CN110985999A (en) | 2019-12-13 | 2019-12-13 | High-power-density light-emitting device adopting circulating fluorescent liquid |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911289229.0A CN110985999A (en) | 2019-12-13 | 2019-12-13 | High-power-density light-emitting device adopting circulating fluorescent liquid |
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| CN110985999A true CN110985999A (en) | 2020-04-10 |
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| CN201911289229.0A Pending CN110985999A (en) | 2019-12-13 | 2019-12-13 | High-power-density light-emitting device adopting circulating fluorescent liquid |
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106287329A (en) * | 2015-06-04 | 2017-01-04 | 国立中央大学 | Liquid-cooled high-power LED spotlight |
| CN207868228U (en) * | 2018-02-12 | 2018-09-14 | 中国人民大学 | A kind of LED excitations fluorescent liquid light-emitting device |
| CN211040854U (en) * | 2019-12-13 | 2020-07-17 | 复旦大学 | High-power-density light-emitting device adopting circulating fluorescent liquid |
-
2019
- 2019-12-13 CN CN201911289229.0A patent/CN110985999A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106287329A (en) * | 2015-06-04 | 2017-01-04 | 国立中央大学 | Liquid-cooled high-power LED spotlight |
| CN207868228U (en) * | 2018-02-12 | 2018-09-14 | 中国人民大学 | A kind of LED excitations fluorescent liquid light-emitting device |
| CN211040854U (en) * | 2019-12-13 | 2020-07-17 | 复旦大学 | High-power-density light-emitting device adopting circulating fluorescent liquid |
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