CN108194846A - A kind of fluorescent liquid laser light emitting device and preparation method thereof - Google Patents
A kind of fluorescent liquid laser light emitting device and preparation method thereof Download PDFInfo
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- CN108194846A CN108194846A CN201810146256.1A CN201810146256A CN108194846A CN 108194846 A CN108194846 A CN 108194846A CN 201810146256 A CN201810146256 A CN 201810146256A CN 108194846 A CN108194846 A CN 108194846A
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- wiring board
- fluorescent liquid
- cavity
- fluorescent
- emitting device
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21K—NON-ELECTRIC LIGHT SOURCES USING LUMINESCENCE; LIGHT SOURCES USING ELECTROCHEMILUMINESCENCE; LIGHT SOURCES USING CHARGES OF COMBUSTIBLE MATERIAL; LIGHT SOURCES USING SEMICONDUCTOR DEVICES AS LIGHT-GENERATING ELEMENTS; LIGHT SOURCES NOT OTHERWISE PROVIDED FOR
- F21K9/00—Light sources using semiconductor devices as light-generating elements, e.g. using light-emitting diodes [LED] or lasers
- F21K9/20—Light sources comprising attachment means
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21K—NON-ELECTRIC LIGHT SOURCES USING LUMINESCENCE; LIGHT SOURCES USING ELECTROCHEMILUMINESCENCE; LIGHT SOURCES USING CHARGES OF COMBUSTIBLE MATERIAL; LIGHT SOURCES USING SEMICONDUCTOR DEVICES AS LIGHT-GENERATING ELEMENTS; LIGHT SOURCES NOT OTHERWISE PROVIDED FOR
- F21K9/00—Light sources using semiconductor devices as light-generating elements, e.g. using light-emitting diodes [LED] or lasers
- F21K9/60—Optical arrangements integrated in the light source, e.g. for improving the colour rendering index or the light extraction
- F21K9/64—Optical arrangements integrated in the light source, e.g. for improving the colour rendering index or the light extraction using wavelength conversion means distinct or spaced from the light-generating element, e.g. a remote phosphor layer
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21K—NON-ELECTRIC LIGHT SOURCES USING LUMINESCENCE; LIGHT SOURCES USING ELECTROCHEMILUMINESCENCE; LIGHT SOURCES USING CHARGES OF COMBUSTIBLE MATERIAL; LIGHT SOURCES USING SEMICONDUCTOR DEVICES AS LIGHT-GENERATING ELEMENTS; LIGHT SOURCES NOT OTHERWISE PROVIDED FOR
- F21K9/00—Light sources using semiconductor devices as light-generating elements, e.g. using light-emitting diodes [LED] or lasers
- F21K9/60—Optical arrangements integrated in the light source, e.g. for improving the colour rendering index or the light extraction
- F21K9/69—Details of refractors forming part of the light source
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21K—NON-ELECTRIC LIGHT SOURCES USING LUMINESCENCE; LIGHT SOURCES USING ELECTROCHEMILUMINESCENCE; LIGHT SOURCES USING CHARGES OF COMBUSTIBLE MATERIAL; LIGHT SOURCES USING SEMICONDUCTOR DEVICES AS LIGHT-GENERATING ELEMENTS; LIGHT SOURCES NOT OTHERWISE PROVIDED FOR
- F21K9/00—Light sources using semiconductor devices as light-generating elements, e.g. using light-emitting diodes [LED] or lasers
- F21K9/90—Methods of manufacture
-
- 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
- F21V19/00—Fastening of light sources or lamp holders
- F21V19/001—Fastening of light sources or lamp holders the light sources being semiconductors devices, e.g. LEDs
- F21V19/0015—Fastening arrangements intended to retain light sources
- F21V19/0025—Fastening arrangements intended to retain light sources the fastening means engaging the conductors of the light source, i.e. providing simultaneous fastening of the light sources and their electric connections
-
- 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
- F21V23/00—Arrangement of electric circuit elements in or on lighting devices
-
- 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
- F21V29/56—Cooling arrangements using liquid coolants
- F21V29/59—Cooling arrangements using liquid coolants with forced flow of the coolant
-
- 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
- F21V5/00—Refractors for light sources
- F21V5/04—Refractors for light sources of lens shape
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21Y—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO THE FORM OR THE KIND OF THE LIGHT SOURCES OR OF THE COLOUR OF THE LIGHT EMITTED
- F21Y2115/00—Light-generating elements of semiconductor light sources
- F21Y2115/30—Semiconductor lasers
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Optics & Photonics (AREA)
- Manufacturing & Machinery (AREA)
- Radiation-Therapy Devices (AREA)
Abstract
The present invention relates to a kind of fluorescent liquid laser light emitting devices and preparation method thereof, it is characterised in that：It includes main cavity, mixing pump, lens, wiring board, LD excitation illuminating sources and fluorescent liquid material；Main cavity includes pedestal, the circular cylindrical cavity of opening upwards is fixedly installed at the top of pedestal, sealing bonding lens at the top of cavity, cavity side opposite end offers liquid inlet and liquid outlet, liquid inlet and liquid outlet are connected respectively with fluorescence fluid catheter both ends, mixing pump is connected on fluorescence fluid catheter, fluorescent liquid inlet is provided in mixing pump；Wiring board is fixed at the substrate top inside circular cylindrical cavity by wiring board support column, and fixed each LD of welding excites illuminating source, and be connected therewith at the top of wiring board；Fluorescent liquid material is filled in circular cylindrical cavity and fluorescent liquid catheter interior.The present invention can be widely applied to light-emitting device field.
Description
Technical field
The present invention relates to fluorescent liquid laser light emitting device technical fields, and in particular to a kind of fluorescent liquid laser light emitting device
And preparation method thereof.
Background technology
Since environmental problem is more and more paid attention to by the world, also increasingly paid close attention in the environmental protection of lighting area, it is right
The requirement for how reducing exhaust gas discharge and the pollution etc. of lighting area is also gradually stringent.For this purpose, how to promote in lighting area
It reduces exhaust gas discharge or more energy efficient technical solution continues to bring out.Although also there is certain technological improvement, i.e., with common LED lamps and lanterns
Substitute high-pressure sodium lamp, although this also functions to certain energy-saving effect, the main consideration of this replacement be common LED lamp longevity
Life is longer than high-pressure sodium lamp.But common LED lamps and lanterns have one disadvantage in that, although improving a lot for the energy saving or service life,
But its quantity of heat production is also very high, it may be said that common LED lamp energy use aspects in addition to luminous available power, remaining energy
It is generated in the form of heat, such the result is that common LED lamp must use radiator, the heat of the bigger generation of power is also more
Greatly, radiator is also bigger.And caused by this defect as a result, lamps and lanterns are bulky, weight is overweight, installs and uses maintenance
It is all highly difficult.
Therefore it is high to provide a kind of luminous efficiency, energy conservation and environmental protection, volume is light and handy, installs and uses light-emitting device easy to maintain,
It is the main target of those skilled in the art.Inventor proposes a kind of light-emitting device by making great efforts, which passes through solution
Heat conduction and heat radiation problem reduces light-emitting device overall volume and weight, can also overcome common hair while service life is improved
The drawbacks described above of electro-optical device.
Invention content
In view of the above-mentioned problems, the object of the present invention is to provide a kind of fluorescent liquid laser light emitting device and preparation method thereof,
The device uses LD laser light sources as illuminating source, and the fluorescent liquid that LD lasing fluorescences light source activation flows is converted into required
Light；This light-emitting device can actively guide heat caused by LD lasing fluorescences light source and fluorescent material, and heat-conducting effect is notable.Fluorescence
Liquid laser light-emitting device is small, light-weight, at low cost, and solves the heat dissipation problem of super generating electro-optical device well, realizes
It is simple to install and use maintenance for light-emitting device lightweight.
To achieve the above object, the present invention takes following technical scheme：
The first aspect, the present invention provide a kind of fluorescent liquid laser light emitting device, it is characterised in that：It includes main chamber
Body, mixing pump, lens, wiring board, LD excitation illuminating sources and the fluorescent liquid material being filled in inside light-emitting device；It is described
Main cavity includes pedestal, and the circular cylindrical cavity of opening upwards is fixedly installed at the top of the pedestal, and sealing is viscous at the top of the cavity
The lens are connect, cavity side opposite end offers liquid inlet and liquid outlet, the liquid inlet and liquid discharge
Mouth is connected respectively with the fluorescence fluid catheter both ends, and the mixing pump is connected on the fluorescence fluid catheter, is set in the mixing pump
It is equipped with fluorescent liquid inlet；The wiring board is fixed at by wiring board support column inside the circular cylindrical cavity
The substrate top, each LD excitations illuminating source of the fixed welding in wiring board top, and be connected therewith；The liquid is glimmering
Luminescent material is filled in the circular cylindrical cavity and fluorescent liquid catheter interior, for being excited under LD excitation illuminating source effects
White light is generated, and guides the heat that the LD excitations illuminating source generates.
It is preset with multiple through the hole of wiring board upper and lower ends position on the wiring board, each LD illuminating sources are plugged in
Each Kong Weizhong of the wiring board, and the pin of each LD illuminating sources pass through the wiring board, and with the wiring board bottom
The line layer of portion's setting is welded and fixed and is connected.
Main chamber body is made of copper, aluminium oxide, aluminium nitride, aluminium alloy or iron material matter.
The lens use hemispherical convex mirror or horizontal glass lens.
The fluorescent liquid material is using silicone oil and the mixture of fluorescent powder.
The wiring board uses 1-3mm thickness glass-fiber-plate or aluminum substrate.
The second aspect：
The present invention provides a kind of production method of fluorescent liquid laser light emitting device, it is characterised in that includes the following steps：
1) integrally formed main cavity is obtained by machining, main chamber body includes pedestal and circular cylindrical cavity, is located at
Containing wiring board support column at the top of pedestal inside circular cylindrical cavity, circular cylindrical cavity both sides are provided with liquid inlet and liquid discharge
Mouthful；
2) line layer, and providing holes position in the circuit board are arranged in the circuit board；
3) LD lasing fluorescences light source is placed at the top of assist side, the pin of LD lasing fluorescence light sources is inserted into wiring board and presets
In good hole position, and the pin of LD lasing fluorescence light sources and line layer are welded by scolding tin in one side for having line layer of assist side
It connects, fix the line layer on the pin and wiring board of LD lasing fluorescence light sources and is connected；
4) wiring board for being welded with LD lasing fluorescence light sources is fixed on assist side support column；
5) lens seals are fixed on to the top of main cavity；
6) after fluorescence fluid catheter is connect with mixing pump, liquid inlet and the liquid outlet of main cavity are connected respectively, is formed
Circulation closed space；
7) fluorescent liquid is injected into circulation closed space from the fluorescent liquid inlet of mixing pump and sealed.
The present invention has the following advantages due to taking above technical scheme：1st, apparatus of the present invention are by LD lasing fluorescence light
The a large amount of heat that source work generates is directly transferred to by wiring board and pin in fluorescent liquid, and fluorescent liquid is in the drive of mixing pump
Dynamic lower rapid flowing, actively takes away rapidly heat, ensure that the temperature in use of LD lasing fluorescence light sources, effectively improve light extraction efficiency
And service life；2nd, apparatus of the present invention fluorescence transition material is fluorescent liquid, and fluorescent liquid flows rapidly under the driving of mixing pump
Dynamic, flow transition, the time is very short, makes fluorescent material operating temperature not exceeded, it is ensured that fluorescent material will not high temperature failure, simultaneously
Improve transfer efficiency；3rd, apparatus of the present invention active heat conduction and heat radiation is rapid, reduces radiator volume with power large area, it is light to do making
Quantify light-emitting device；4th, apparatus of the present invention have good heat conduction and heat radiation ability, can realize high power laser in small area light source
The features such as light-emitting device, light efficiency is good, production technology is advanced and production efficiency is high.
Description of the drawings
Fig. 1 is fluorescent liquid laser light emitting device structure diagram of the present invention, and arrow show light direction in figure；
Fig. 2 is fluorescent liquid laser light emitting device main body 3D exploded views of the present invention；
Fig. 3 is fluorescent liquid laser light emitting device main body 3D overall diagrams of the present invention；
Fig. 4 is fluorescent liquid laser light emitting device main body 3D sectional views of the present invention.
Specific embodiment
The present invention is described in detail below with reference to the accompanying drawings and embodiments.It should be appreciated, however, that the offer of attached drawing is only
For a better understanding of the present invention, they should not be interpreted as limitation of the present invention.
As shown in Figure 1 to 4, a kind of fluorescent liquid laser light emitting device provided by the invention, including main cavity 1, stirring
Pump 2, lens 3, wiring board 4, LD excitation illuminating sources 5 and the fluorescent liquid material 6 being filled in inside light-emitting device.
Main cavity 1 includes pedestal 11, and 11 top of pedestal is fixedly installed the circular cylindrical cavity 12 of opening upwards, and cavity 12 pushes up
Portion's sealing bonding lens 3,12 side opposite end of cavity offer liquid inlet 13 and liquid outlet 14, liquid inlet 13 and liquid
Body outlet 14 is connected respectively with fluorescent liquid inlet tube 7 and 8 both ends of fluorescent liquid outlet, fluorescent liquid inlet tube 7 and fluorescent liquid outlet
Other one section of pipe 8 is connected with mixing pump 2, and fluorescent liquid inlet 21 is provided in mixing pump 2.Wiring board 4 passes through wiring board branch
Dagger 9 is fixed at 11 top of substrate inside circular cylindrical cavity 12, and 4 top of wiring board is fixed to weld each LD excitations hair
Radiant 5, and be connected therewith.Fluorescent liquid material 6 is filled in inside circular cylindrical cavity 12 and fluorescence fluid catheter 7, in LD
The lower excitation of the effect of illuminating source 5 is excited to generate white light, and guides the heat that LD excitation illuminating sources 5 generate.
It is preset with multiple through the hole of wiring board upper and lower ends position on wiring board 4, each LD illuminating sources 5 plug assist side
4 each Kong Weizhong, and the pin 51 of each LD illuminating sources 5 passes through wiring board 4, and the line layer 41 set with 4 bottom of wiring board
It is welded and fixed and is connected.
As a preferred embodiment, main cavity 1 is made of copper, aluminium oxide, aluminium nitride, aluminium alloy or iron material matter.
As a preferred embodiment, lens 3 use hemispherical convex mirror or horizontal glass lens.
As a preferred embodiment, fluorescent liquid material 6 is using silicone oil and the mixture of fluorescent powder.
As a preferred embodiment, wiring board 4 uses 1-3mm thickness glass-fiber-plate or aluminum substrate.
The present invention also provides a kind of production methods of fluorescent liquid laser light emitting device, include the following steps：
1) integrally formed main cavity 1 is obtained by machining, wherein, main cavity 1 includes pedestal 11 and circular cylindrical cavity
12, for the pedestal top inside circular cylindrical cavity 12 containing wiring board support column 9,12 both sides of circular cylindrical cavity are provided with liquid
Entrance 13 and liquid outlet 14；
2) processing line plate 4：Line layer 41 is arranged in assist side 4, and according to requiring providing holes position in assist side 41；
3) LD lasing fluorescences light source 5 is placed into 4 top of assist side, the pin of LD lasing fluorescences light source 5 is inserted into wiring board 4
In the hole position preset, and assist side 4 has one side of line layer by scolding tin by the pin and line of LD lasing fluorescences light source 5
Road floor welding, makes the line layer 41 on the pin 51 and wiring board 5 of LD lasing fluorescences light source 5 fix and be connected；
4) wiring board 4 for being welded with LD lasing fluorescences light source 5 is fixed on assist side support column 9；
5) lens 3 are sealed to the top for being fixed on main cavity 1；
6) after fluorescence fluid catheter 7 is connect with mixing pump 8, liquid inlet 13 and the liquid outlet of main cavity 1 are connected respectively
14, form circulation closed space；
7) fluorescent liquid is injected into circulation closed space from the fluorescent liquid inlet 81 of mixing pump 8 and sealed, in use, LD
The fluorescent liquid material 6 that the heat that the heat and fluorescent liquid material 6 that excitation illuminating source 5 generates generate directly is flowed is led
It walks, ensures that light-emitting device has good heat dissipation performance.
Finally it should be noted that：The above embodiments are merely illustrative of the technical solutions of the present invention, rather than its limitations；Although
The present invention is described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that：It still may be used
To modify to the technical solution recorded in foregoing embodiments or carry out equivalent replacement to which part technical characteristic,
And these modifications or replacement, the range for various embodiments of the present invention technical solution that it does not separate the essence of the corresponding technical solution.
Claims (7)
1. a kind of fluorescent liquid laser light emitting device, it is characterised in that：It includes main cavity, mixing pump, lens, wiring board, LD
Excitation illuminating source and the fluorescent liquid material being filled in inside light-emitting device；
Main chamber body includes pedestal, and the circular cylindrical cavity of opening upwards, the cavity top are fixedly installed at the top of the pedestal
Portion's sealing is bonded the lens, and cavity side opposite end offers liquid inlet and liquid outlet, the liquid inlet
It is connected respectively with the fluorescence fluid catheter both ends with liquid outlet, the mixing pump is connected on the fluorescence fluid catheter, it is described to stir
It mixes and is provided with fluorescent liquid inlet on pump；The wiring board is fixed at by wiring board support column positioned at the cylindrical cavity
The substrate top in internal portion, each LD excitations illuminating source of the fixed welding in wiring board top, and be connected therewith；Institute
It states fluorescent liquid material and is filled in the circular cylindrical cavity and fluorescent liquid catheter interior, for making in LD excitation illuminating sources
White light is generated with lower excitation, and guides the heat that the LD excitations illuminating source generates.
2. a kind of fluorescent liquid laser light emitting device as described in claim 1, it is characterised in that：It is preset on the wiring board
It is multiple through the hole of wiring board upper and lower ends position, each LD illuminating sources are plugged in each Kong Weizhong of the wiring board, and each
The pin of the LD illuminating sources passes through the wiring board, and is welded and fixed and leads with the line layer of wiring board bottom setting
It is logical.
3. a kind of fluorescent liquid laser light emitting device as described in claim 1, it is characterised in that：Main chamber body using copper,
Aluminium oxide, aluminium nitride, aluminium alloy or iron material matter make.
4. a kind of fluorescent liquid laser light emitting device as described in claim 1, it is characterised in that：The lens use hemispherical
Convex mirror or horizontal glass lens.
5. a kind of fluorescent liquid laser light emitting device as described in claim 1, it is characterised in that：The fluorescent liquid material is adopted
With silicone oil and the mixture of fluorescent powder.
6. a kind of fluorescent liquid laser light emitting device as described in claim 1, it is characterised in that：The wiring board uses 1-
3mm thickness glass-fiber-plate or aluminum substrate.
It is 7. a kind of such as the production method of any one of claim 1~6 described device, it is characterised in that include the following steps：
1) integrally formed main cavity is obtained by machining, main chamber body includes pedestal and circular cylindrical cavity, positioned at cylinder
Containing wiring board support column at the top of the pedestal of shape inside cavity, circular cylindrical cavity both sides are provided with liquid inlet and liquid outlet；
2) line layer, and providing holes position in the circuit board are arranged in the circuit board；
3) LD lasing fluorescences light source is placed at the top of assist side, the pin of LD lasing fluorescence light sources is inserted into what wiring board was preset
In the position of hole, and the pin of LD lasing fluorescence light sources and line layer are welded by scolding tin in one side for having line layer of assist side,
It fixes the line layer on the pin and wiring board of LD lasing fluorescence light sources and is connected；
4) wiring board for being welded with LD lasing fluorescence light sources is fixed on assist side support column；
5) lens seals are fixed on to the top of main cavity；
6) after fluorescence fluid catheter is connect with mixing pump, liquid inlet and the liquid outlet of main cavity are connected respectively, forms cycle
Confined space；
7) fluorescent liquid is injected into circulation closed space from the fluorescent liquid inlet of mixing pump and sealed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810146256.1A CN108194846A (en) | 2018-02-12 | 2018-02-12 | A kind of fluorescent liquid laser light emitting device and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810146256.1A CN108194846A (en) | 2018-02-12 | 2018-02-12 | A kind of fluorescent liquid laser light emitting device and preparation method thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108194846A true CN108194846A (en) | 2018-06-22 |
Family
ID=62593988
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810146256.1A Pending CN108194846A (en) | 2018-02-12 | 2018-02-12 | A kind of fluorescent liquid laser light emitting device and preparation method thereof |
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| CN (1) | CN108194846A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114877265A (en) * | 2022-05-06 | 2022-08-09 | 佛山电器照明股份有限公司 | Laser lighting device and manufacturing method thereof |
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| CN208138889U (en) * | 2018-02-12 | 2018-11-23 | 中国人民大学 | A kind of fluorescent liquid laser light emitting device |
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| CN101881380A (en) * | 2009-05-06 | 2010-11-10 | 张栋楠 | Heat dissipation structure for LED chip |
| CN102330962A (en) * | 2011-09-19 | 2012-01-25 | 贵州光浦森光电有限公司 | Lighting method and device of LED (light-emitting diode) |
| CN103208576A (en) * | 2012-01-16 | 2013-07-17 | 汪绍芬 | Low-heat-resistance and high-light-efficiency light-emitting diode (LED) integrated light source |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114877265A (en) * | 2022-05-06 | 2022-08-09 | 佛山电器照明股份有限公司 | Laser lighting device and manufacturing method thereof |
| CN114877265B (en) * | 2022-05-06 | 2024-01-23 | 佛山电器照明股份有限公司 | Laser lighting device and manufacturing method thereof |
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