CN206350202U - Dim the circuit of color-temperature regulating - Google Patents
Dim the circuit of color-temperature regulating Download PDFInfo
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- CN206350202U CN206350202U CN201720020418.8U CN201720020418U CN206350202U CN 206350202 U CN206350202 U CN 206350202U CN 201720020418 U CN201720020418 U CN 201720020418U CN 206350202 U CN206350202 U CN 206350202U
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- colour temperature
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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
- 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
- Y02B20/00—Energy efficient lighting technologies, e.g. halogen lamps or gas discharge lamps
- Y02B20/30—Semiconductor lamps, e.g. solid state lamps [SSL] light emitting diodes [LED] or organic LED [OLED]
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Abstract
The purpose of this utility model is to provide a kind of circuit for dimming color-temperature regulating, by switching switch, voltage-stabiliser tube and the cooperation of detection resistance, can in lamp brightness by bright to the transformation that light fixture colour temperature is realized while dark transformation, and circuit structure is simple, with low cost, color-temperature regulating is interval wide, energy conversion efficiency is high, can solve existing light modulation color-temperature regulating fitting structure complexity, involve great expense, conversion efficiency is low, the problem of color-temperature regulating is interval narrow.
Description
Technical field
The utility model is related to dimming LED lamp field, more particularly to a kind of circuit for dimming color-temperature regulating.
Background technology
The continuous enhancing that dimming lamp is realized with people's energy-conserving and environment-protective, is increasingly widely used in daily life
Among work.But conventional dimming lamp can only realize that lamp brightness, to dark transformation, and can not be become by bright in lamp brightness
The transformation of light fixture colour temperature is realized while change.
Also have in the market can dim can also color-temperature regulating light fixture, but the implementation method of such light fixture is universal
All controlled using two-way, i.e. the LED of two-way power supply two-way different-colour lights, by the size for changing two paths of LED electric current
To realize the function of light modulation and color-temperature regulating, such a framework can realize the independent control of lamp brightness and colour temperature.But also make simultaneously
Obtain light fixture framework complicated, energy conversion efficiency is low, and whole lamp cost is also sufficiently expensive, is unfavorable for market and is widely applied,
The mainstream ideology of energy-conserving and environment-protective is not instantly met.
There is a kind of circuit for the implementation that LED lamp brightness and colour temperature change simultaneously：Equally it is two paths of LED, its
In warm colour temperature LED all the way, another road cool colour temperature LED, warm colour temperature LED VF values will be less than cool colour temperature LED, in addition, in warm colour temperature
Resistance is sealed in all the way.The interval very little of such a method light fixture color conversion, and resistance loss is very big, and luminous efficiency is very low.
Utility model content
A purpose of the present utility model is to provide a kind of circuit for dimming color-temperature regulating, can solve the problem that existing light modulation toning
Warm fitting structure is complicated, involves great expense, conversion efficiency is low, the problem of color-temperature regulating is interval narrow.
According to one side of the present utility model, there is provided a kind of circuit for dimming color-temperature regulating, the electricity of the light modulation color-temperature regulating
Road includes：
First adjustable color light LED of N series connection, wherein, N is positive integer；
Second adjustable color light LED of N+M series connection, wherein, first in the first adjustable color light LED of N series connection
First the second adjustable color in the second adjustable color light LED that the first adjustable color light LED anode is connected with N+M
Light LED anode connection, M is positive integer；
With the N the first adjustable color light LED first resistor connected, one end of the first resistor with the N the
The negative electrode connection of color temperature Dimmable LED；
The switching switch connected with the first resistor, the first end that the switching is switched is another with the first resistor
End connection, the second end of the switching switch is connected with the N+M the second adjustable color light LED cathode；
The second adjustable color light LED parallel connections of the first adjustable color light LED connected with described N and N+M series connection
Second resistance, one end of the second resistance and first first adjustable color light LED, the second adjustable color light LED
Anode common port is connected, the three-terminal link of the other end of the second resistance and the switching switch；
Voltage-stabiliser tube, the three-terminal link of the negative electrode of the voltage-stabiliser tube and the switching switch；
Detection resistance, one end of the detection resistance is connected with the anode of the voltage-stabiliser tube, the detection resistance it is another
The second end switched with the switching and the common port of the N+M the second adjustable color light LED anode is held to be connected；
The dimming power source of curent change, the positive pole of the power supply of the curent change and the first first adjustable color light
The common port connection of LED anode, first the second adjustable color light LED anode and second resistance, the curent change
The negative pole of power supply is connected with the common port of the detection resistance, the anode of voltage-stabiliser tube.
Further, in the circuit of above-mentioned light modulation color-temperature regulating, the switching switch is by the first triode and the two or three pole
Pipe is in series, and the colelctor electrode of second triode is opened with the connection common port of the colelctor electrode of the first triode for the switching
The first end of pass, the second end of the extremely described switching switch of transmitting of first triode, the base stage of second triode
For the 3rd end of the switching switch.
Further, in the circuit of above-mentioned light modulation color-temperature regulating, the emitter stage and the first triode of second triode
Base stage connection, the colelctor electrode of second triode is connected with the colelctor electrode of the first triode, the collection of second triode
Electrode is connected with the common port of the colelctor electrode of the first triode with the other end of the first resistor, the base of second triode
Pole is connected with the other end of the second resistance and the negative electrode of the voltage-stabiliser tube respectively, the emitter stage difference of first triode
It is connected with the N+M the second adjustable color light LED cathode and the other end of the detection resistance.
Further, in the circuit of above-mentioned light modulation color-temperature regulating, the M is 2~4.
Further, in the circuit of above-mentioned light modulation color-temperature regulating, first colour temperature is cool colour temperature, and second colour temperature is
Warm colour temperature.
Further, in the circuit of above-mentioned light modulation color-temperature regulating, first colour temperature is warm colour temperature, and second colour temperature is
Cool colour temperature.
Further, in the circuit of above-mentioned light modulation color-temperature regulating, the Dimmable LED of the cool colour temperature of series connection is arranged in inner ring,
The Dimmable LED of the warm colour temperature of series connection is arranged in outer ring.
Further, in the circuit of above-mentioned light modulation color-temperature regulating, colour temperature is 6000K, light fixture during the circuit most bright 100%
Colour temperature is 4000K when brightness is 70%, and colour temperature is 2700K during lamp brightness most dark 10% or so.
Further, in the circuit of above-mentioned light modulation color-temperature regulating, the dimming power source includes thyristor regulating photoelectric source, 0-
Any of 10V dimming power sources, PWM dimming power sources, DALI dimming power sources.
Compared with prior art, the utility model, can be in lamp by switching switch, voltage-stabiliser tube and the cooperation of detection resistance
Have brightness by bright to the transformation that light fixture colour temperature is realized while dark transformation, and circuit structure is simple, with low cost, warm area of mixing colours
Between it is wide, energy conversion efficiency is high, and it is complicated to solve existing light modulation color-temperature regulating fitting structure, involves great expense, conversion efficiency is low, adjusts
The problem of range of color temperature is narrow.
Brief description of the drawings
It is of the present utility model by reading the detailed description made to non-limiting example made with reference to the following drawings
Other features, objects and advantages will become more apparent upon：
Fig. 1 shows the circuit diagram of the light modulation color-temperature regulating according to the embodiment of the utility model one；
Fig. 2 shows two kinds of colour temperature LED current variation diagrams of the embodiment of the utility model one；
Fig. 3 shows the corresponding relation figure of brightness and colour temperature in the dimming process according to the embodiment of the utility model one.
Embodiment
The utility model is described in further detail below in conjunction with the accompanying drawings.
As shown in figure 1, the utility model provides a kind of circuit for dimming color-temperature regulating, the circuit includes：
First adjustable color light LED3 of N series connection, wherein, N is positive integer；
Second adjustable color light LED6 of N+M series connection, wherein, the in the first adjustable color light LED3 of N series connection
First the second color in the second adjustable color light LED6 that one the first adjustable color light LED3-1 anode is connected with N+M
Warm Dimmable LED 6-1 anode connection, M is positive integer；Here, the first adjustable color light LED3 of N series connection and N+M string
Second adjustable color light LED6 of connection is parallel relationship；
With the N the first adjustable color light LED3-n first resistor Rcl1 connected, one end of the first resistor
Rcl1 is connected with the N the first adjustable color light LED3-n negative electrode；
Connect Rcl1 switching switch switch tube with the first resistor, the switching switch switchtube's
First end is connected with the other end of the first resistor Rcl1, described to switch the second end for switching switch tube and the N+M
Second adjustable color light LED such as LED6- (n+2) cathode connection；
The the first adjustable color light LED-3 connected with described N and the second adjustable color light LED-6 of N+M series connection are simultaneously
The second resistance Rcl2 of connection, one end of the second resistance Rcl2 and first the first adjustable color light LED3-1, second
Adjustable color light LED-6 anode common port connection, the other end of the second resistance Rcl2 and the switching switch switch
Tube three-terminal link；
Voltage-stabiliser tube Vref, the three-terminal link of the negative electrode of the voltage-stabiliser tube Vref and the switching switch switch tube；
Detection resistance Rsense, one end of the detection resistance Rsense is connected with the anode of the voltage-stabiliser tube Vref, institute
The other end and the second end of the switching switch switch tube and the N+M the second colour temperature for stating detection resistance Rsense can
The common port connection of dimming LED (Light Emitting Diode) such as LED6- (n+2) negative electrode；
The dimming power source Current source of curent change, the power supply Current source of the curent change are just
The of pole and first first adjustable color light LED3-1 anode, first the second adjustable color light LED6-1 anode
Two resistance Rcl2 common port connection, the power supply Current source of the curent change negative pole and the detection resistance
Rsense, voltage-stabiliser tube Vref anode common port connection.The utility model can in lamp brightness by bright to dark transformation
The transformation of light fixture colour temperature is realized simultaneously, and circuit structure is simple, with low cost, color-temperature regulating is interval wide, and energy conversion efficiency is high, can
It is complicated to solve existing light modulation color-temperature regulating fitting structure, involve great expense, conversion efficiency is low, the problem of color-temperature regulating is interval narrow.
As shown in figure 1, in the embodiment of the utility model one, the switching switch switch tube are by the first triode Q1
It is in series with the second triode Q2, the connection of the colelctor electrode of the second triode Q2 and the first triode Q1 colelctor electrode is public
End is the first end of the switching switch switch tube, the extremely described switching switch of transmitting of the first triode Q1 altogether
Switch tube the second end, the base stage of the second triode Q2 switchs switch tube the 3rd end for the switching.
As shown in figure 1, in the embodiment of the utility model one, the emitter stage and the first triode Q1 of the second triode Q2
Base stage connection, the colelctor electrode of the second triode Q2 is connected with the colelctor electrode Q2 of the first triode, second triode
Q2 colelctor electrode is connected with the common port of the first triode Q1 colelctor electrode with the other end of the first resistor Rcl1, and described
Two triode Q2 base stage is connected with the other end of the second resistance Rcl2 and the negative electrode of the voltage-stabiliser tube Vref respectively, described
First triode Q1 emitter stage cathode respectively with the N+M the second adjustable color light LED such as LED6- (n+2) and the inspection
Measuring resistance Rsense other end connection.
In the embodiment of the utility model one, the M is 2~4, so as to ensure the first adjustable color light LED3 of N series connection
There is appropriate pressure difference between the second adjustable color light LED6 connected with N+M.As shown in figure 1, the M is 2, cool colour temperature LED
Two are not limited to a warm colour temperature LED number difference, specific visual light fixture actual conditions increase, as long as meeting switch tube
Power consumption requirements and can
As shown in figure 1, in the embodiment of the utility model one, first colour temperature is cool colour temperature, and second colour temperature is warm
Colour temperature.Specifically, the present embodiment uses LED6-1 ... LED6- (n+2) using cool colour temperature LED, LED3-1 ... LED3-n
Warm colour temperature LED, when Current source output current is descending to change, LED luminosity can by it is bright to
Dark synchronization changes, at the same time the voltage at detection resistance Rsense two ends due to current value change it is also descending
Change.The magnitude of voltage of detection resistance Rsense magnitude of voltage and reference voltage point Vref is compared, when Rsense voltage
When value is less than Vref magnitudes of voltage, switch tube conductings, warm colour temperature LED starts, and warm colour temperature LED is in glimmer state, starts light fixture
Colour temperature is by being as cold as warm transition process, and after current value is down to certain value, switch tube are fully on, and cool colour temperature LED can be closed
Disconnected (because warm colour temperature LED strip number is less than cool colour temperature LED, so warm colour temperature LED startup voltage will be less than cool colour temperature LED), with
Realize warm colour temperature.The colour temperature change of panchromatic temperature section can be realized on this line theory.As shown in Fig. 2 being circuitry software simulation two
Plant colour temperature LED current result of variations：
LED6：Lines 1 represent cool colour temperature LED；
LED3：Lines 2 represent warm colour temperature LED；
X-axis from left to right represents that total input current value (current source) is ascending successively；
Y-axis is to flow through cool colour temperature, warm colour temperature LED current value size of sharing to indicate；
Flowing through LED current value, bigger to represent LED luminance higher.
As shown in figure 1, in the embodiment of the utility model one, first colour temperature is warm colour temperature, second colour temperature is cold
Colour temperature.Specifically, the present embodiment is by a upper embodiment, cool colour temperature LED and warm colour temperature LED location swap, to meet realization
The different demands of cool colour temperature, i.e. LED6-1 ... LED6- (n+2) use cool colour using warm colour temperature LED, LED3-1 ... LED3-n
Warm LED, when Current source output current is descending to change, LED luminosity can be by bright to dark
Synchronously change, at the same time the voltage at detection resistance Rsense two ends changes also descending generation due to current value
Change.The magnitude of voltage of detection resistance Rsense magnitude of voltage and reference voltage point Vref is compared, when Rsense magnitude of voltage is low
When Vref magnitudes of voltage, switch tube conductings, cool colour temperature LED starts, and cool colour temperature LED is in glimmer state, starts light fixture colour temperature
The cold transition process by warming up, after current value is down to certain value, switch tube are fully on, and warm colour temperature LED can be turned off
(because cool colour temperature LED strip number is less than warm colour temperature LED, so cool colour temperature LED startup voltage will be less than warm colour temperature LED), with reality
Existing cool colour temperature.The colour temperature change of panchromatic temperature section can be realized on this line theory.
As shown in figure 1, in the embodiment of the utility model one, the Dimmable LED of the cool colour temperature of series connection is arranged in inner ring, series connection
The Dimmable LED of warm colour temperature be arranged in outer ring.Here, being arranged by rational pcb board, that is, the tunable optical for the cool colour temperature connected
LED is arranged in inner ring, and the Dimmable LED of the warm colour temperature of series connection is arranged in outer ring, make light fixture by it is bright to dark dimming process just as
Incandescent lamp is general, and lamp brightness is constantly shunk by bright to illuminator during dark, the effect of the similar candle light of generation.
In the embodiment of the utility model one, colour temperature is 6000K during the circuit most bright 100%, when lamp brightness is 70%
Colour temperature is 4000K, and colour temperature is 2700K during lamp brightness most dark 10% or so.In the concrete application example of the utility model one, pass through
This light modulation toning circuit temperature is added on the basis of original controllable silicon light modulation light fixture, light fixture colour temperature during light modulation is realized
Change, colour temperature is 6000K during light fixture most bright 100%, and colour temperature is 4000K when lamp brightness is 70%, when lamp brightness is most dark
10% or so colour temperature is 2700K.4000K to 6000K range of color temperature is the colour temperature of optimum work and study, lamp brightness change
Less.3000K colour temperature is used in the occasion of rest substantially, and lamp brightness is very low.
In the embodiment of the utility model one, the dimming power source include thyristor regulating photoelectric source, 0-10V dimming power sources,
Any of PWM dimming power sources, DALI dimming power sources.Here, line applications of the present utility model flexibly, can be grafted in current
The light modulation of several LED lamp dimming arrangements of the market mainstream, such as controllable silicon light modulation, 0-10V, PWM light modulations, DALI light modulations, as long as
The dimming power source that originally dimming LED lamp is flows through LED current size to realize light modulation by change, and rear end makes lamp
Tool realizes light modulation toning temperature function.
In the embodiment of the utility model one, the corresponding relation of brightness and colour temperature is illustrated in fig. 3 shown below during lamp light-regulating, its
In, lines 3 represent the change of luminous flux, the change of the colour temperature of lines 4.
In summary, the utility model, can be in lamp brightness by switching switch, voltage-stabiliser tube and the cooperation of detection resistance
By bright to the transformation that light fixture colour temperature is realized while dark transformation, and circuit structure is simple, with low cost, and color-temperature regulating is interval wide,
Energy conversion efficiency is high, can solve existing light modulation color-temperature regulating fitting structure complexity, involve great expense, conversion efficiency is low, color-temperature regulating
Interval narrow the problem of.
Obviously, those skilled in the art can carry out the essence of various changes and modification without departing from the application to the application
God and scope.So, if these modifications and variations of the application belong to the scope of the application claim and its equivalent technologies
Within, then the application is also intended to comprising including these changes and modification.
It is obvious to a person skilled in the art that the utility model is not limited to the details of above-mentioned one exemplary embodiment, and
And in the case of without departing substantially from spirit or essential attributes of the present utility model, can realize that this practicality is new in other specific forms
Type.Therefore, no matter from the point of view of which point, embodiment all should be regarded as exemplary, and is nonrestrictive, this practicality is new
The scope of type limits by appended claims rather than described above, it is intended that the equivalency fallen in claim is contained
All changes in justice and scope are included in the utility model.Any reference in claim should not be considered as limitation
Involved claim.Furthermore, it is to be understood that the word of " comprising " one is not excluded for other units or step, odd number is not excluded for plural number.Device
The multiple units or device stated in claim can also be realized by a unit or device by software or hardware.The
One, the second grade word is used for representing title, and is not offered as any specific order.
Claims (9)
1. a kind of circuit for dimming color-temperature regulating, wherein, the circuit includes：
First adjustable color light LED of N series connection, wherein, N is positive integer；
Second adjustable color light LED of N+M series connection, wherein, first in the first adjustable color light LED of N series connection the
First the second adjustable color light in the second adjustable color light LED that the anode of color temperature Dimmable LED is connected with N+M
LED anode connection, M is positive integer；
With the N the first adjustable color light LED first resistor connected, one end of the first resistor and the N the first color
The negative electrode connection of warm Dimmable LED；
The switching switch connected with the first resistor, the other end of the first end and the first resistor of the switching switch connects
Connect, the second end of the switching switch is connected with the N+M the second adjustable color light LED cathode；
The second of the second adjustable color light LED parallel connections of the first adjustable color light LED connected with described N and N+M series connection
Resistance, one end of the second resistance and first first adjustable color light LED, the second adjustable color light LED anode
Common port is connected, the three-terminal link of the other end of the second resistance and the switching switch；
Voltage-stabiliser tube, the three-terminal link of the negative electrode of the voltage-stabiliser tube and the switching switch；
Detection resistance, one end of the detection resistance is connected with the anode of the voltage-stabiliser tube, the other end of the detection resistance with
Second end of the switching switch and the common port connection of the N+M the second adjustable color light LED anode；
The dimming power source of curent change, the positive pole of the power supply of the curent change and first first adjustable color light LED
Anode, the common port connection of first the second adjustable color light LED anode and second resistance, the power supply of the curent change
Negative pole be connected with the common port of the detection resistance, the anode of voltage-stabiliser tube.
2. the circuit of light modulation color-temperature regulating according to claim 1, wherein, the switching switch is by the first triode and second
Triode is in series, and the colelctor electrode of second triode is cut with the connection common port of the colelctor electrode of the first triode to be described
The first end of switch is changed, the transmitting of first triode is extremely described to switch the second end switched, second triode
The 3rd end that base stage switchs for the switching.
3. the circuit of light modulation color-temperature regulating according to claim 2, wherein, the emitter stage and the one or three of second triode
The base stage connection of pole pipe, the colelctor electrode of second triode is connected with the colelctor electrode of the first triode, second triode
Colelctor electrode be connected with the common port of the colelctor electrode of the first triode with the other end of the first resistor, second triode
Base stage be connected respectively with the other end of the second resistance and the negative electrode of the voltage-stabiliser tube, the emitter stage of first triode
It is connected respectively with the N+M the second adjustable color light LED cathode and the other end of the detection resistance.
4. the circuit of light modulation color-temperature regulating according to claim 1, wherein, the M is 2~4.
5. the circuit of light modulation color-temperature regulating according to claim 1, wherein, first colour temperature is cool colour temperature, described second
Colour temperature is warm colour temperature.
6. the circuit of light modulation color-temperature regulating according to claim 1, wherein, first colour temperature is warm colour temperature, described second
Colour temperature is cool colour temperature.
7. the circuit of the light modulation color-temperature regulating according to claim 5 or 6, wherein, the Dimmable LED arrangement of the cool colour temperature of series connection
In inner ring, the Dimmable LED of the warm colour temperature of series connection is arranged in outer ring.
8. the circuit of the light modulation color-temperature regulating according to any one of claim 1 to 6, wherein, the color during circuit most bright 100%
Temperature is 6000K, and colour temperature is 4000K when lamp brightness is 70%, and colour temperature is 2700K during lamp brightness most dark 10% or so.
9. the circuit of the light modulation color-temperature regulating according to any one of claim 1 to 6, wherein, the dimming power source includes controllable
Any of silicon dimming power source, 0-10V dimming power sources, PWM dimming power sources, DALI dimming power sources.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720020418.8U CN206350202U (en) | 2017-01-09 | 2017-01-09 | Dim the circuit of color-temperature regulating |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720020418.8U CN206350202U (en) | 2017-01-09 | 2017-01-09 | Dim the circuit of color-temperature regulating |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206350202U true CN206350202U (en) | 2017-07-21 |
Family
ID=59324779
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720020418.8U Withdrawn - After Issue CN206350202U (en) | 2017-01-09 | 2017-01-09 | Dim the circuit of color-temperature regulating |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206350202U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106793330A (en) * | 2017-01-09 | 2017-05-31 | 江苏宜美照明科技股份有限公司 | Dim the circuit of color-temperature regulating |
| CN108419329A (en) * | 2018-01-31 | 2018-08-17 | 佛山冠今光电科技有限公司 | LED light light-dimming method, light modulation module and lamps and lanterns |
| TWI676403B (en) * | 2019-03-19 | 2019-11-01 | 節明科技股份有限公司 | Color temperature and luminance tunable light-emitting diode device |
| CN110730535A (en) * | 2019-10-25 | 2020-01-24 | 厦门阳光恩耐照明有限公司 | Module and method for switching color temperature through dimming |
-
2017
- 2017-01-09 CN CN201720020418.8U patent/CN206350202U/en not_active Withdrawn - After Issue
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106793330A (en) * | 2017-01-09 | 2017-05-31 | 江苏宜美照明科技股份有限公司 | Dim the circuit of color-temperature regulating |
| CN106793330B (en) * | 2017-01-09 | 2018-11-13 | 江苏宜美照明科技股份有限公司 | Dim the circuit of color-temperature regulating |
| CN108419329A (en) * | 2018-01-31 | 2018-08-17 | 佛山冠今光电科技有限公司 | LED light light-dimming method, light modulation module and lamps and lanterns |
| CN108419329B (en) * | 2018-01-31 | 2020-09-29 | 佛山冠今光电科技有限公司 | LED lamp dimming method, dimming module and lamp |
| TWI676403B (en) * | 2019-03-19 | 2019-11-01 | 節明科技股份有限公司 | Color temperature and luminance tunable light-emitting diode device |
| CN110730535A (en) * | 2019-10-25 | 2020-01-24 | 厦门阳光恩耐照明有限公司 | Module and method for switching color temperature through dimming |
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| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned | ||
| AV01 | Patent right actively abandoned | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20170721 Effective date of abandoning: 20181113 |
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| AV01 | Patent right actively abandoned |
Granted publication date: 20170721 Effective date of abandoning: 20181113 |