CN110925616A - Rotating disc type monochromatic LED light source system - Google Patents
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- CN110925616A CN110925616A CN201911280332.9A CN201911280332A CN110925616A CN 110925616 A CN110925616 A CN 110925616A CN 201911280332 A CN201911280332 A CN 201911280332A CN 110925616 A CN110925616 A CN 110925616A
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Images
Classifications
-
- 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
- F21K9/23—Retrofit light sources for lighting devices with a single fitting for each light source, e.g. for substitution of incandescent lamps with bayonet or threaded fittings
- F21K9/238—Arrangement or mounting of circuit elements integrated in 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
- F21K9/60—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
- 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
- F21V23/003—Arrangement of electric circuit elements in or on lighting devices the elements being electronics drivers or controllers for operating the light source, e.g. for a LED array
-
- 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
- F21V29/57—Cooling arrangements using liquid coolants characterised by control arrangements
-
- 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
- F21V29/85—Protecting lighting devices from thermal damage; Cooling or heating arrangements specially adapted for lighting devices or systems characterised by the material
- F21V29/89—Metals
-
- 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
- F21Y2115/10—Light-emitting diodes [LED]
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Investigating Or Analysing Materials By Optical Means (AREA)
- Led Devices (AREA)
- Led Device Packages (AREA)
Abstract
The invention relates to a rotating disc type monochromatic LED light source system which comprises a heat dissipation rotating disc, a plurality of monochromatic LED light source modules and a plurality of cooling modules, wherein the monochromatic LED light source modules are arranged on the upper surface of the heat dissipation rotating disc and are uniformly distributed on the circumference, a plurality of heat dissipation pipelines are arranged in the heat dissipation rotating disc, each heat dissipation pipeline is distributed below one monochromatic LED light source module, and the cooling modules are connected with the heat dissipation pipelines, wherein each monochromatic LED light source module comprises a heat sink base, an LED chip, a constant current power supply, a junction temperature testing device and a photometric sensor, the heat sink base is arranged on the heat dissipation rotating disc, the LED chip and the junction temperature testing device are arranged in the heat sink base, the photometric sensor is connected with the constant current power supply, and the junction. Compared with the prior art, the light source provided by the invention has the advantages of rich wavelength, good heat dispersion and stable long-term operation, and can be used as a standard light source for various photochemical and photo-biological experiments and tests.
Description
Technical Field
The invention relates to the field of semiconductor illumination, in particular to a rotating disc type monochromatic LED light source system.
Background
With the continuous progress of lighting technology, LEDs (light emitting diodes) are gradually replacing traditional heat radiation light sources and gas discharge light sources, becoming a new generation of mainstream lighting sources, and being widely applied in the fields of general lighting and special lighting. The LED as a light source has the following advantages: the spectrum covers the ultraviolet, visible and infrared regions; the lighting effect is high, and the energy consumption is low; the volume is small, and the application is flexible; the response speed is high, and the adjustment is convenient; reliable, durable, long service life, environmental protection, no pollution and the like.
Various physical, chemical and biological reactions related to light relate to industrial production, scientific and technological research, civil health and other aspects, such as photochemical synthesis of various materials and medicines; the photo-curing technology is used for curing various skin diseases, and the photo-curing technology is used for curing coatings and inks on the surfaces of printing or various appliances; the physiological influence of light on various animals and plants, and the like. However, most photochemical and photo-biological reaction mechanisms are lack of deep research, especially the influence of spectral response. The reason is mainly due to the lack of a standard light source of high intensity, high stability, uniform spectral radiance.
At present, the influence of spectral response, i.e. the wavelength of the radiation light, on the reaction is studied, and the light sources generally used are divided into two types. One is to use a laser to obtain a narrow band spectrum with a narrow full width at half maximum, but the laser is expensive and has a limited wavelength range that does not cover all the uv to ir regions. The other light source is a narrow-band radiation light obtained by splitting light by a monochromator by a xenon lamp with continuous spectrum. However, the size of the light source equipment is too large, the use is inconvenient, and the spectral profile of the xenon lamp has a peak value, so that the spectral intensity difference in the range of 200-1000 nm is dozens of times, as shown in fig. 5. Therefore, the radiance of monochromatic light with different wavelengths obtained in this way has magnitude difference, and is difficult to be widely used for spectral response research. Therefore, there is a need for a stable and reliable standard light source that is spectrally tunable and has a uniform radiance at different wavelengths.
Disclosure of Invention
The invention aims to overcome the defects of the prior art and provide a turntable type monochromatic LED light source system with selectable central wavelength, adjustable spectral width, high intensity and high stability, and monochromatic LED light sources with different wavelengths have consistent radiance, thereby providing a standard light source for spectral response research of various photochemical and photo-biological reactions.
The purpose of the invention can be realized by the following technical scheme:
a turntable type monochromatic LED light source system comprises a heat dissipation turntable, a plurality of monochromatic LED light source modules and a plurality of cooling modules, wherein the monochromatic LED light source modules are arranged on the upper surface of the heat dissipation turntable and are uniformly distributed on the circumference, a plurality of heat dissipation pipelines are arranged in the heat dissipation turntable, each heat dissipation pipeline is distributed below one monochromatic LED light source module, each cooling module is connected with a liquid inlet and a liquid outlet of one heat dissipation pipeline, each monochromatic LED light source module comprises a heat sink base, an LED chip, a constant current power supply, a junction temperature testing device and a photometric sensor, the heat sink base is arranged on the heat dissipation turntable, the LED chip and the junction temperature testing device are arranged in the heat sink base, the constant current power supply is arranged on the side edge of the heat sink base and is connected with the LED chip, the photometric sensor is arranged on the side upper part of the LED chip and is connected with the constant, the junction temperature testing device is connected with the cooling module.
Furthermore, the monochromatic LED light source module also comprises a detachable and replaceable interference filter, the heat sink base is a box body with an opening at the upper end, and the interference filter is arranged at the opening of the box body.
Furthermore, a heat conduction layer is arranged between the heat sink base and the heat dissipation turntable.
Further, the heat dissipation rotary table is a metal rotary table.
Further, the heat dissipation pipeline be snakelike pipeline, the inlet and the liquid outlet of heat dissipation pipeline all set up on the side of heat dissipation carousel.
Furthermore, each cooling module comprises a thermostat, a cooling liquid box body and a flow rate regulator, the thermostat is connected with the cooling liquid box body, the cooling liquid box body is connected with a liquid inlet and a liquid outlet of the heat dissipation pipeline through the flow rate regulator, and the junction temperature testing device is connected with the flow rate regulator.
Further, the central wavelength of the light emitted by each monochromatic LED light source module is different.
Further, the number of the single-color LED light source modules is at least three.
Compared with the prior art, the invention has the following advantages:
the invention can provide radiation light output with various different central wavelengths and different spectral widths by combining a plurality of monochromatic LED light source modules with the replaceable interference filter; measuring the junction temperature of each monochromatic LED light source module through a junction temperature testing device, and then ensuring that the junction temperature of the monochromatic LED light source modules is kept constant through the combination of the junction temperature testing device and a cooling module; the light attenuation of the monochromatic LED light source module is compensated through negative feedback matching of the light measuring sensor and the constant current power supply, namely the light measuring sensor provides a feedback signal to the constant current power supply to control the light source brightness stability of the LED. Thereby, a stable light output of each single color LED light source module is achieved while ensuring constant junction temperature and current. The light source emitted by the invention has rich wavelength, good heat dispersion and stable long-term work, and can be used as a standard light source for various photochemical and photo-biological experiments and tests.
Drawings
FIG. 1 is a schematic structural diagram of the present invention.
Fig. 2 is a schematic cross-sectional view of a heat-dissipating turntable.
Fig. 3 is a schematic structural diagram of a monochromatic LED light source module.
Fig. 4 is a schematic structural view of a cooling module.
FIG. 5 is a xenon lamp spectral distribution diagram.
Reference numerals: 1. the LED light source module comprises a heat dissipation turntable, 11, a heat dissipation pipeline, 12, a liquid inlet, 13, a liquid outlet, 2, a monochromatic LED light source module, 21, a heat sink base, 22, an LED chip, 23, a constant current power supply, 24, a photometric sensor, 25, an interference filter, 3, a cooling module, 31, a thermostat, 32, a cooling liquid box body, 33, a flow rate regulator, 34 and a micropump.
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.
Example one
This example is for a visual standard light source for visual ergonomics experiments. The light source requirement of the visual ergonomics experiment is that the peak wavelength range is 380-780nm, and the peak wavelength is every 10nm, and the total wavelength is 41 visible monochromatic wavelengths.
As shown in fig. 1 and 2, the present embodiment provides a rotating disk type monochromatic LED light source system, which includes a heat dissipation rotating disk 1, a plurality of monochromatic LED light source modules 2, and a plurality of cooling modules 3. In this embodiment, three monochromatic LED light source modules 2 and three cooling modules 3 are used. Three single-color LED light source modules 2 are arranged on the upper surface of the heat dissipation turntable 1 and are uniformly distributed on the circumference. The center of the lower surface of the heat dissipation turntable 1 is connected with a rotating support (not shown in the figure), and the monochromatic LED light source module 2 corresponding to the heat dissipation turntable 1 is aligned to a light outlet of external equipment through the rotation of the heat dissipation turntable, so that an experiment is carried out.
The heat dissipation turntable 1 is a metal turntable, specifically copper with high heat conductivity. Be equipped with many heat dissipation pipelines 11 in the inside of heat dissipation carousel 1, heat dissipation pipeline 11 is snakelike pipeline, and its inlet 12 and liquid outlet 13 all set up on the side of heat dissipation carousel 1. The number of the heat dissipation pipelines 11 is the same as that of the single-side LED light source modules, and is also three, and each heat dissipation pipeline 11 is distributed below one single-color LED light source module 2.
As shown in fig. 3, each of the single-color LED light source modules 2 includes a heat sink base 21, an LED chip 22, a constant current power supply 23, a junction temperature test device (not shown in the figure), a photometry sensor 24, and an interference filter 25. The heat sink base 21 is a box body with an opening at the upper end, and the detachable and replaceable interference filter 25 is installed at the opening of the box body. The LED chip 22 and the junction temperature testing device are mounted within the heatsink base 21. Accordingly, monochromatic light having a full width at half maximum (FWHM) of 10nm can be obtained even more by passing the light emitted from the LED chip 22 through the interference filter 25.
The constant current source 23 is mounted on the side of the heat sink base 21 and connected to the LED chip 22. The photometric sensor 24 is mounted above the side of the interference filter 25 and is connected to the constant current power supply 23. The photometric sensor 24 feeds measured light intensity data back to the constant current power supply 23 for current regulation, so that light attenuation is compensated, and the light output of the LED chip 22 is stable after long-time work. The current of the constant current source 23 can be set and constant at a plurality of discrete values, providing a plurality of radiation brightness values differing by a factor of 100 at maximum by the LED chip 22.
The bottom edge of the heat sink base 21 is smooth, and a graphene or silica gel heat conduction layer is arranged between the heat sink base 21 and the heat dissipation turntable 1. The center wavelength of the light emitted by the LED chips 22 of each single-color LED light source module 2 is different.
Each cooling module 3 includes a thermostat 31, a coolant tank 32, and a flow rate regulator 33. The thermostat 31 is connected to a coolant tank 32, and the coolant tank 32 is connected to the inlet 12 and the outlet 13 of the heat radiation pipe 11 via a flow rate regulator 33. A micro-pump 34 is also provided between the coolant tank 32 and the flow rate regulator 33 for transporting the coolant. The junction temperature testing device of the monochromatic LED light source module 2 is connected to the flow rate regulator 33. The thermostat 31 is used for ensuring that the temperature of cooling liquid in the cooling liquid box 32 is constant, the flow rate regulator 33 is used for receiving the junction temperature value of the LED chip 22 transmitted by the junction temperature testing device, the flow of the cooling liquid is adjusted by adjusting the size of an internal valve, the heat dissipation degree of each monochromatic LED light source module 2 is controlled, the junction temperature of the LED chip 22 is constant, and the chip junction temperature of the monochromatic LED light source module 2 is controlled at 25 ℃.
The junction temperature testing device is a well-established device and can be used for measuring, setting and monitoring the junction temperature of the LED chip 22. After each monochromatic LED light source module 2 is started, the junction temperature testing device sets a target junction temperature, continuously measures and monitors the junction temperature of the LED chip 22, controls the cooling module 3 to realize constant junction temperature, and realizes the stabilization of the central wavelength and the intensity of the light output of the monochromatic LED standard light source system.
The central wavelength of the monochromatic light in the embodiment can be selected; through amplitude Pulse Width Modulation (PWM) of the constant current power supply 23, the radiation brightness of the monochromatic LED light source module 2 can be changed within a range of two orders of magnitude, meeting the requirements of the visual experiment.
Example two
The overall structure of the present embodiment is the same as that of the first embodiment. The difference is that the embodiment is used for the ultraviolet standard light source for photochemical reaction, and the monochromatic LED light source module 2 adopts an ultraviolet monochromatic LED light source module 2 with three wavelengths of UVC, UVB and UVA. The substrate of the interference filter 25 is quartz glass, FWHM 10 nm. The heat sink base 21 of the monochromatic LED light source module 2 adopts a hot press plate to enhance heat dissipation. In the embodiment, the junction temperature testing device sets the junction temperature of the LED chip 22 of the monochromatic LED light source module 2 at 60 ℃, and the LED light source packaged by the high-power-density chip is adopted, so that the radiation output can reach 1W/cm2The above ultraviolet light output is used for researching the corresponding efficiency of photochemical reaction to ultraviolet wavelength.
The foregoing detailed description of the preferred embodiments of the invention has been presented. It should be understood that numerous modifications and variations could be devised by those skilled in the art in light of the present teachings without departing from the inventive concepts. Therefore, the technical solutions available to those skilled in the art through logic analysis, reasoning and limited experiments based on the prior art according to the concept of the present invention should be within the scope of protection defined by the claims.
Claims (8)
1. A rotating disc type monochromatic LED light source system is characterized by comprising a heat dissipation rotating disc (1), a plurality of monochromatic LED light source modules (2) and a plurality of cooling modules (3), wherein the monochromatic LED light source modules (2) are installed on the upper surface of the heat dissipation rotating disc (1) and are uniformly distributed on the circumference, a plurality of heat dissipation pipelines (11) are arranged in the heat dissipation rotating disc (1), each heat dissipation pipeline (11) is distributed below one monochromatic LED light source module (2), each cooling module (3) is connected with a liquid inlet (12) and a liquid outlet (13) of one heat dissipation pipeline (11), each monochromatic LED light source module (2) comprises a heat sink base (21), an LED chip (22), a constant current power supply (23), a junction temperature testing device and a photometric sensor (24), the heat sink base (21) is installed on the heat dissipation rotating disc (1), the LED chip (22) and the junction temperature testing device are installed in the heat sink base (21), the LED constant-current testing device is characterized in that the constant-current power supply (23) is arranged on the side edge of the heat sink base (21) and connected with the LED chip (22), the photometric sensor (24) is arranged above the side of the LED chip (22) and connected with the constant-current power supply (23), and the junction temperature testing device is connected with the cooling module (3).
2. The rotating disc type monochromatic LED light source system according to claim 1, wherein the monochromatic LED light source module (2) further comprises a detachable and replaceable interference filter (25), the heat sink base (21) is a box body with an open upper end, and the interference filter (25) is installed at the opening of the box body.
3. A rotating disc type monochromatic LED light source system according to claim 1, wherein a heat conducting layer is arranged between the heat sink base (21) and the heat dissipating rotating disc (1).
4. The rotating disc type single-color LED light source system according to claim 1, wherein the heat-dissipating rotating disc (1) is a metal rotating disc.
5. The rotating disc type monochromatic LED light source system according to claim 1, wherein the heat dissipation pipeline (11) is a serpentine pipeline, and the liquid inlet (12) and the liquid outlet (13) of the heat dissipation pipeline (11) are both arranged on the side of the heat dissipation rotating disc (1).
6. The rotating disc type monochromatic LED light source system according to claim 1, wherein each cooling module (3) comprises a thermostat (31), a cooling liquid tank (32) and a flow rate regulator (33), the thermostat (31) is connected with the cooling liquid tank (32), the cooling liquid tank (32) is connected with the liquid inlet (12) and the liquid outlet (13) of the heat dissipation pipeline (11) through the flow rate regulator (33), and the junction temperature testing device is connected with the flow rate regulator (33).
7. The rotating disc type single-color LED light source system as claimed in claim 1, wherein the central wavelength of the light emitted by each single-color LED light source module (2) is different.
8. The rotating disc type single-color LED light source system as claimed in claim 7, wherein the number of the single-color LED light source modules (2) is at least three.
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Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
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CN111714784A (en) * | 2020-08-10 | 2020-09-29 | 佛山紫熙慧众科技有限公司 | Multiband LED phototherapy system |
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CN201075082Y (en) * | 2007-09-26 | 2008-06-18 | 中国兵器工业集团第五三研究所 | N2O4 corresponding water content measurer |
CN201326922Y (en) * | 2008-11-20 | 2009-10-14 | 武汉盟信科技有限责任公司 | Combined LED illuminator |
CN104121988A (en) * | 2013-04-27 | 2014-10-29 | 上海机动车检测中心 | Combined type led module standard light source group |
CN211040543U (en) * | 2019-12-13 | 2020-07-17 | 复旦大学 | Rotating disc type monochromatic L ED light source system |
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2019
- 2019-12-13 CN CN201911280332.9A patent/CN110925616A/en active Pending
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN201075082Y (en) * | 2007-09-26 | 2008-06-18 | 中国兵器工业集团第五三研究所 | N2O4 corresponding water content measurer |
CN201326922Y (en) * | 2008-11-20 | 2009-10-14 | 武汉盟信科技有限责任公司 | Combined LED illuminator |
CN104121988A (en) * | 2013-04-27 | 2014-10-29 | 上海机动车检测中心 | Combined type led module standard light source group |
CN211040543U (en) * | 2019-12-13 | 2020-07-17 | 复旦大学 | Rotating disc type monochromatic L ED light source system |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
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CN111714784A (en) * | 2020-08-10 | 2020-09-29 | 佛山紫熙慧众科技有限公司 | Multiband LED phototherapy system |
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