CN205491361U - LED lamp of adjustable colour temperature - Google Patents
LED lamp of adjustable colour temperature Download PDFInfo
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- CN205491361U CN205491361U CN201521128192.0U CN201521128192U CN205491361U CN 205491361 U CN205491361 U CN 205491361U CN 201521128192 U CN201521128192 U CN 201521128192U CN 205491361 U CN205491361 U CN 205491361U
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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
- Y02B20/40—Control techniques providing energy savings, e.g. smart controller or presence detection
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Abstract
The utility model provides a LED lamp of adjustable colour temperature, through the electric current that detects the pleasantly warm white LED array of cold white LED array, confirm a current ratio value parameter of the pleasantly warm white LED array of cold white LED array, confirm the target current ratio value parameter that the target colour temperature corresponds according to the current ratio value parameter obtained in advance and the corresponding relation of colour temperature, according to a current ratio value parameter and target current ratio value parameter, the duty cycle of adjustment PWM2 signal, the messenger wins the current ratio value parameter and equals target current ratio value parameter, as long as a current ratio value parameter inalterability just can be guaranteed the colour temperature and not change, the colour temperature does not change in the time of can guaranteeing to adjust the luminance of LED lamp by this method.
Description
Technical field
This utility model relates to light emitting diode (light emitting diode is called for short LED) technology,
Particularly relate to the LED of a kind of adjustable color temperature.
Background technology
Along with progress and the raising of quality of the life of science and technology, the requirement that LED is illuminated by people more comes
The highest.In order to realize secondary energy-saving, it is desirable to realize brightness regulation, freely regulate the bright of light
Dark degree.In order to build different atmosphere, it is desirable to realize colour temperature regulation, personal settings
Light environment.
Correlational study shows, uses two dimming power sources to drive the white light LEDs battle array of two kinds of colour temperatures of height respectively
Row, are capable of colour temperature regulation by regulating the driving current ratio of two power supplys, but this method there is also
Problems with: the regulation on lamplight brightness can affect colour temperature regulation, when people are often not intended to regulate colour temperature
When the bright-dark degree of light changes or regulates brightness there is substantially skew in colour temperature, say, that wishes
Regulation colour temperature and regulation brightness do not interfere with each other.
Utility model content
This utility model provides the LED of a kind of adjustable color temperature, it is possible to when adjusting the brightness of LED
Ensure that colour temperature does not changes.
This utility model first aspect provides the LED of a kind of adjustable color temperature, including: power module,
Micro-control unit, LED scalable drive power supply, cool white LED array, warm white LED battle array
Row, the first on-off circuit, second switch circuit, the first current detection circuit and the second current detection circuit；
Described power module drives with the input of described micro-control unit and described LED scalable respectively
The input of power supply connects；
Described LED scalable drives the positive pole of power supply to be parallel with the first branch road and the second branch road, and described first
Described cool white LED array, described first on-off circuit and described first electric current inspection it has been sequentially connected in series on branch road
Slowdown monitoring circuit, described second branch road has been sequentially connected in series described warm white LED array, described second switch circuit
With described second current detection circuit, described LED scalable drives the minus earth of power supply；
Described micro-control unit respectively with described first on-off circuit, described second switch circuit, described
First end of one current detection circuit, the first end of described second current detection circuit and described LED can
Regulation drives the first input end of power supply to connect；
Described micro-control unit exports the first pwm signal to described first on-off circuit, and to described
Two on-off circuits export the second pwm signal, the phase of described second pwm signal and described first pwm signal
Position is contrary；
Described micro-control unit is additionally operable to detect described cool white LED battle array by described first current detection circuit
First electric current of row, detects the second electric current of described warm white LED array by described second testing circuit,
And determine the first current ratio parameter, according to obtaining in advance according to described first electric current and described second electric current
The corresponding relation of current ratio parameter and colour temperature, determine the target electricity that target colour temperature that user inputs is corresponding
Flow ratio value parameter；
Described micro-control unit is additionally operable to according to described first current ratio parameter and described target current ratio
Value parameter, adjusts described first pwm signal and the dutycycle of described second pwm signal so that described
One current ratio parameter is equal to described target current ratio parameter.
Optionally, described micro-control unit specifically for:
Detect first voltage at the two ends of described first current detection circuit, and according to described first voltage and
The computing the resistor value of described first current detection circuit obtains described first electric current, and detects described second electricity
Second voltage at current detection circuit two ends, according to described second voltage and described second current detection circuit
Computing the resistor value obtains described second electric current.
Optionally, described first current ratio parameter is equal to the ratio of described first electric current with described second electric current
Value；
Or, the first current ratio parameter is equal to the ratio of described first electric current with total current, described total electricity
Stream is equal to described first electric current and the ratio of described second electric current；
Or, the first current ratio parameter is equal to the ratio of described second electric current with total current.
Optionally, when described first current ratio parameter is equal to described first electric current and described second electric current
During ratio, described according to described first current ratio parameter and described target current ratio parameter, adjust
Described first pwm signal and the dutycycle of described second pwm signal, including:
When described first current ratio parameter is more than described target current ratio parameter, then reduce described first
The dutycycle of pwm signal, increases the dutycycle of described second pwm signal；
Or, when described first current ratio parameter is less than described target current ratio parameter, then increase institute
State the dutycycle of the first pwm signal, reduce the dutycycle of described second pwm signal.
Optionally, described LED also includes: phase inverter, and the first outfan of described micro-control unit divides
It is not connected with the input of described first on-off circuit and described phase inverter, the outfan of described phase inverter
It is connected with described second switch circuit, the second outfan of described micro-control unit and described first electric current inspection
First end of slowdown monitoring circuit connects, the 3rd outfan of described micro-control unit and described second current detecting electricity
First end on road connects, the second end of described first current detection circuit and described second current detection circuit
The second end respectively ground connection, the 4th outfan of described micro-control unit drives electricity with described LED scalable
The first input end in source connects.
Optionally, described first current detection circuit is the first resistance, and described second current detection circuit is
Second resistance.
Optionally, described first on-off circuit is the first long-acting poplar pipe, and described second switch is second effect
Ying Guan, the first outfan of described micro-control unit is connected with the grid of described first field effect transistor, described
The source electrode of the first field effect transistor is connected with the input of described first current detection circuit, described first effect
Should the drain electrode of pipe be connected with described cool white LED array, the outfan of described phase inverter and described second effect
Should the grid of pipe connect, the input of the source electrode of described second field effect transistor and described second current detection circuit
End connects, and the drain electrode of described second field effect transistor is connected with described warm white LED array.
The LED of the adjustable color temperature that this utility model provides, by detection cool white LED array and warm white
The electric current of LED array, determines the first current ratio parameter of cool white LED array and warm white LED array,
The target electricity that target colour temperature is corresponding is determined with the corresponding relation of colour temperature according to the current ratio parameter obtained in advance
Flow ratio value parameter, according to the first current ratio parameter and target current ratio parameter, adjusts PWM2 signal
Dutycycle so that the first current ratio parameter be equal to target current ratio parameter, if the first current ratio
Value parameter does not change and ensures that colour temperature is not changed in, and can ensure that regulation LED by this method
Brightness time colour temperature do not change.
Accompanying drawing explanation
A kind of structural representation of the LED of the adjustable color temperature that Fig. 1 provides for this utility model embodiment；
The another kind of structural representation of the LED of the adjustable color temperature that Fig. 2 provides for this utility model embodiment
Figure；
Fig. 3 is the change curve of current ratio parameter and colour temperature；
Another structural representation of the LED of the adjustable color temperature that Fig. 4 provides for this utility model embodiment
Figure.
Description of reference numerals:
Power module: 11；Micro-control unit 12:12；
LED scalable driving power supply: 13；Cool white LED array: 14；
Warm white LED array: 15；First on-off circuit: 16；
Second switch circuit: 17；First current detection circuit: 18；
Second current detection circuit: 19；Phase inverter: 20.
Detailed description of the invention
A kind of structural representation of the LED of the adjustable color temperature that Fig. 1 provides for this utility model embodiment,
As it is shown in figure 1, the LED of this adjustable color temperature (hereinafter referred to as LED) may include that power supply mould
Block 11, micro-control unit 12, LED scalable drive power supply 13, cool white LED array 14, warm white LED
Array the 15, first on-off circuit 16, second switch circuit the 17, first current detection circuit 18 and second
Current detection circuit 19.
Wherein, (Microcontroller Unit is called for short power module 11 with micro-control unit respectively
MCU) input and the LED scalable of 12 drives the input of power supply 13 to connect.Power module 11
For driving power supply 13 to power for micro-control unit 12 and LED scalable.
LED scalable drives power supply 13 to have a cathode output end and a cathode output end, and LED can
Regulation drives power supply 13 positive pole to be parallel with the first branch road and the second branch road, the first branch road has been sequentially connected in series cold
White LEDs array the 14, first on-off circuit 16 and the first current detection circuit 18, on the second branch road successively
Being in series with warm white LED array 15, second switch circuit 17 and people's current detection circuit 19, LED can
Regulation drives the minus earth of power supply 13.
Micro-control unit 12 is examined with the first on-off circuit 16, second switch circuit the 17, first electric current respectively
First end of slowdown monitoring circuit 18, the first end of the second current detection circuit 19 and LED scalable drive electricity
The first input end in source 13 connects.In a kind of implementation, as it is shown in figure 1, micro-control unit 12 has
Having 5 outfans, the first outfan and first on-off circuit 16 of micro-control unit 12 connect, micro-control
Second outfan of unit 12 processed and the first end of the first current detection circuit 18 connect, micro-control unit
3rd outfan of 12 and the first end of the second current detection circuit 19 connect, the first current detection circuit
Second end of second end of 18 and the second current detection circuit 19 ground connection respectively, the of micro-control unit 12
Four outfans and LED scalable drive the first input end of power supply 13 to be connected, the of micro-control unit 12
Five outfans are connected with second switch circuit 17.Accordingly, micro-control unit 12 is by the first outfan
Export the first pulse width modulation (Pulse Width Modulation is called for short PWM) signal, pass through
5th outfan exports the second pwm signal, the second pwm signal and the opposite in phase of the first pwm signal.
In this mode, the dutycycle of the first pwm signal and the second pwm signal to adjust respectively.
In another kind of implementation, LED also includes: phase inverter 20, and Fig. 2 is that this utility model is implemented
The another kind of structural representation of the LED of the adjustable color temperature that example provides, as in figure 2 it is shown, microcontroller list
Unit 12 has four outfans, and wherein, the first outfan of micro-control unit 12 switchs with first respectively
The input of circuit 16 and phase inverter 20 connects, the outfan of phase inverter 20 and second switch circuit
17 connect, and the first on-off circuit 16 and second switch circuit 17 have three to connect end, the first switch respectively
Three of circuit 16 connection ends respectively with the first outfan of micro-control unit 12, cool white LED array 14,
First end of the first current detection circuit 18 connects, three of second switch circuit 17 connection ends respectively and
The outfan of phase inverter 11, warm white LED array 15, the first end of people's current detection circuit 19 connect.
Second outfan of micro-control unit 12 and the first end of the first current detection circuit 18 connect, microcontroller
3rd outfan of unit 12 and the first end of people's current detection circuit 19 connect, the first current detecting
Second end of circuit 18 and the second end of people's current detection circuit 19 ground connection, micro-control unit 12 respectively
The 4th outfan and LED scalable drive the first input end of power supply 13 to be connected.Accordingly, microcontroller
Unit 12 exports the first pwm signal by the first outfan, the first pwm signal through phase inverter 20 it
After, become the second pwm signal of opposite in phase with the first pwm signal.In this implementation, only
Needing to adjust the dutycycle of the first pwm signal, the dutycycle of the second pwm signal is as well as change.
First pwm signal opens or closes for controlling the first on-off circuit 16, thus controls cool white LED
Being turned on and off of array 14, the second pwm signal is used for controlling second switch circuit 17 and opens or closes,
Thus control the on and off of warm white LED array 15, such as, when the first pwm signal is high level,
2nd PWM is low level, therefore cool white LED array 14 turns on, and warm white LED array 15 disconnects.When
When one pwm signal is low level, the 2nd PWM is high level, therefore cool white LED array 14 disconnects, warm white
LED array 15 turns on.Micro-control unit 12 is by controlling the first pwm signal and the second pwm signal
Dutycycle regulates cool white LED array 14 and the warm white LED array 15 ON time within the unit interval
Ratio, utilizes human eye to exist and persists the time, it is achieved that the variation effect of colour temperature, and wherein dutycycle is high electricity
Ratio between flat persistent period and low duration.4th outfan output of micro-control unit 12
3rd pwm signal is to control cool white LED array 14 and the brightness of warm white LED array 15, concrete,
When the 3rd pwm signal changes, LED scalable drives the electric current of power supply 13 output to change therewith, i.e. cool white
Curent change in LED array 14 and warm white LED array 15, thus cause cool white LED array 14 He
The brightness flop of warm white LED array 15.
Micro-control unit 12 is additionally operable to detect cool white LED array 14 by the first current detection circuit 18
First electric current, by the second electric current of the second testing circuit detection warm white LED array 15, and according to first
Electric current and the second electric current determine the first current ratio parameter, according to the current ratio parameter obtained in advance and color
The corresponding relation of temperature, determines the target current ratio parameter that target colour temperature that user inputs is corresponding, according to the
One current ratio parameter and target current ratio parameter, adjust the first pwm signal and the second pwm signal
Dutycycle so that the first current ratio parameter be equal to target current ratio parameter.
In the present embodiment, the first current detection circuit and people's current detection circuit 19 can be respectively adopted one
Individual current sensor, current sensor is a kind of detection device, can experience the information of tested electric current, and
Information detection can experienced, be for conversion into according to certain rules meet certain standard needs the signal of telecommunication or
Other desired forms information output, with meet information transmission, process, store, show, record and
The requirements such as control.In this utility model, the electric current recorded is sent to as micro-control unit 12 by current sensor,
Micro-control unit 12 obtains the first electric current and the second electric current.
Optionally, the first current detection circuit 18 is the first resistance, and people's current detection circuit 19 is
Two resistance, certainly, the first current detection circuit 18 and people's current detection circuit 19 can also include many
Individual resistance.Micro-control unit 12 detects first voltage at the two ends of the first current detection circuit 18, and root
The first electric current, and detection people is obtained according to the computing the resistor value of the first voltage and the first current detection circuit 18
Second voltage at current detection circuit 19 two ends, according to the second voltage and described people's current detection circuit
The computing the resistor value of 19 obtains the second electric current.
Wherein, the first current ratio parameter is equal to the first electric current and the ratio of the second electric current, or, first
Current ratio parameter is equal to the ratio of the first electric current with total current, and total current is equal to the first electric current and the second electricity
The ratio of stream, or, the first current ratio parameter equal to the ratio of the second electric current and total current, here the
One electric current is the electric current of the cool white LED array 14 recorded in real time, and the second electric current is the warm white recorded in real time
The electric current of LED array 15.
Current ratio parameter can obtain beforehand through repetitive measurement with the corresponding relation of colour temperature, and concrete can
With electric current and the electric current of warm white LED array 15 by gathering cool white LED array 14 in advance, obtain
Current ratio parameter, then, sets up corresponding closing by color temperature value corresponding with current flow for current ratio parameter
System.A current ratio ginseng can be drawn according to the current ratio parameter color temperature value corresponding with current flow
Number and the change curve of colour temperature, Fig. 3 is the change curve of current ratio parameter and colour temperature, as it is shown on figure 3,
K identifies current ratio parameter, is stored in micro-control unit 12 by this change curve.
Follow-up when user needs to adjust colour temperature, user sends needs by the APP on mobile phone to LED
The target colour temperature adjusted.Micro-control unit 12 is right according to target colour temperature and current ratio parameter and colour temperature
Should be related to, the target current ratio parameter that target colour temperature is corresponding can be obtained.Then the first current ratio is compared
Value parameter and the size of target current ratio parameter.When the first current ratio parameter is equal to the first electric current and the
During the ratio of two electric currents, if the first current ratio parameter is more than target current ratio parameter, then reduce the
The dutycycle of one pwm signal, increases the dutycycle of the second pwm signal, wherein the first current ratio parameter
Excessive more than the electric current of target current ratio parameter explanation cool white LED array 14, need by adjusting first
The dutycycle of PMW signal reduces the ON time of cool white LED array 14, believes by adjusting the 2nd PWM
Number dutycycle increase warm white LED array 15 ON time.Or, when the first current ratio parameter is little
In target current ratio parameter, then increase the dutycycle of the first pwm signal, reduce by the second pwm signal
Dutycycle, to increase the ON time of cool white LED array 14, reduces the conducting of warm white LED array 15
Time.Finally it is adjusted to the first current ratio parameter close or equal to target current ratio parameter, now LED
The colour temperature of lamp is close or equal to target colour temperature.
Existing LED adjust LED brightness during, cool white LED array 14 and warm white
The current ratio parameter of LED array 15 can be along with change, cool white LED array 14 and warm white LED array
The current ratio Parameters variation of 15 can cause colour temperature to change.And the LED of the present embodiment, cold by detection
White LEDs array 14 and the electric current of warm white LED array 15, determine cool white LED array 14 and warm white LED
First current ratio parameter of array 15, closes according to the current ratio parameter obtained in advance is corresponding with colour temperature
System determines the target current ratio parameter that target colour temperature is corresponding, according to the first current ratio parameter and target
Current ratio parameter, adjusts the dutycycle of PWM2 signal so that the first current ratio parameter is equal to target electricity
Flow ratio value parameter, as long as the first current ratio parameter constant ensures that colour temperature is not changed in, passes through
When this method can ensure that the brightness of regulation LED, colour temperature does not changes.
Another structural representation of the LED of the adjustable color temperature that Fig. 4 provides for this utility model embodiment
Figure, shown in Fig. 4, on the basis of the LED of adjustable color temperature shown in Fig. 2, in the present embodiment,
First current detection circuit 18 is the first resistance R1, and people's current detection circuit 19 is the second resistance R2.
First on-off circuit 16 is the first long-acting poplar pipe Q1, and second switch is the second field effect transistor Q2.
Wherein, the first outfan of micro-control unit 12 and the grid of the first field effect transistor Q1 connect, the
The source electrode of one field effect transistor Q1 and the input of the first current detection circuit 18 connect, the first field effect transistor
The drain electrode of Q1 is connected with cool white LED array 14, the outfan of phase inverter 20 and the second field effect transistor Q2
Grid connect, the input connection of the source electrode of the second field effect transistor Q2 and people's current detection circuit 19,
The drain electrode of the second field effect transistor Q2 is connected with warm white LED array 15.
In the present embodiment, two current detection circuits use resistance to realize, and two on-off circuits use field effect
Should realize by pipe so that the LED of adjustable color temperature realizes simple, and low cost.
Last it is noted that various embodiments above is only in order to illustrate the technical solution of the utility model, and
Non-to its restriction；Although this utility model being described in detail with reference to foregoing embodiments, ability
The those of ordinary skill in territory is it is understood that it still can be to the technical scheme described in foregoing embodiments
Modify, or the most some or all of technical characteristic is carried out equivalent；And these amendment or
Person replaces, and does not make the essence of appropriate technical solution depart from the model of this utility model each embodiment technical scheme
Enclose.
Claims (7)
1. the LED of an adjustable color temperature, it is characterized in that, including: power module, micro-control unit, LED scalable drive power supply, cool white LED array, warm white LED array, the first on-off circuit, second switch circuit, the first current detection circuit and the second current detection circuit；
Described power module drives the input of power supply to be connected with the input of described micro-control unit and described LED scalable respectively；
Described LED scalable drives the positive pole of power supply to be parallel with the first branch road and the second branch road, described cool white LED array, described first on-off circuit and described first current detection circuit it has been sequentially connected in series on described first branch road, being sequentially connected in series described warm white LED array, described second switch circuit and described second current detection circuit on described second branch road, described LED scalable drives the minus earth of power supply；
Described micro-control unit drives the first input end of power supply to be connected with described first on-off circuit, described second switch circuit, the first end of described first current detection circuit, the first end of described second current detection circuit and described LED scalable respectively；
Described micro-control unit is for exporting the first pulse width modulation (PWM) signal to described first on-off circuit, and exports the opposite in phase of the second pwm signal, described second pwm signal and described first pulse width modulation (PWM) signal to described second switch circuit；
Described micro-control unit is additionally operable to be detected the first electric current of described cool white LED array by described first current detection circuit, the second electric current of described warm white LED array is detected by described second current detection circuit, and determine the first current ratio parameter according to described first electric current and described second electric current, according to the corresponding relation of the current ratio parameter obtained in advance Yu colour temperature, determine the target current ratio parameter that target colour temperature that user inputs is corresponding；
Described micro-control unit is additionally operable to according to described first current ratio parameter and described target current ratio parameter, adjust described first pulse width modulation (PWM) signal and the dutycycle of described second pwm signal so that described first current ratio parameter is equal to described target current ratio parameter.
LED the most according to claim 1, it is characterised in that described micro-control unit specifically for:
Detect first voltage at the two ends of described first current detection circuit, and obtain described first electric current according to the computing the resistor value of described first voltage and described first current detection circuit, and detect second voltage at described second current detection circuit two ends, obtain described second electric current according to the computing the resistor value of described second voltage and described second current detection circuit.
LED the most according to claim 2, it is characterised in that described first current ratio parameter is equal to the ratio of described first electric current with described second electric current；
Or, the first current ratio parameter is equal to described first electric current and the ratio of described second electric current equal to the ratio of described first electric current with total current, described total current；
Or, the first current ratio parameter is equal to the ratio of described second electric current with total current.
LED the most according to claim 1, it is characterized in that, when described first current ratio parameter is equal to the ratio of described first electric current and described second electric current, described according to described first current ratio parameter and described target current ratio parameter, adjust described first pwm signal and the dutycycle of described second pwm signal, including:
When described first current ratio parameter is more than described target current ratio parameter, then reduces the dutycycle of described first pwm signal, increase the dutycycle of described second pwm signal；
Or, when described first current ratio parameter is less than described target current ratio parameter, then increases the dutycycle of described first pwm signal, reduce the dutycycle of described second pwm signal.
5. according to the LED described in any one of claim 1-4, it is characterised in that also include: phase inverter；
First outfan of described micro-control unit input with described first on-off circuit and described phase inverter respectively is connected, the outfan of described phase inverter is connected with described second switch circuit, second outfan of described micro-control unit is connected with the first end of described first current detection circuit, 3rd outfan of described micro-control unit is connected with the first end of described second current detection circuit, second end of described first current detection circuit and the second end of described second current detection circuit ground connection respectively, 4th outfan of described micro-control unit drives the first input end of power supply to be connected with described LED scalable.
LED the most according to claim 5, it is characterised in that described first current detection circuit is the first resistance, described second current detection circuit is the second resistance.
LED the most according to claim 5, it is characterized in that, described first on-off circuit is the first field effect transistor, described second switch is the second field effect transistor, first outfan of described micro-control unit is connected with the grid of described first field effect transistor, the source electrode of described first field effect transistor is connected with the input of described first current detection circuit, the drain electrode of described first field effect transistor is connected with described cool white LED array, the outfan of described phase inverter is connected with the grid of described second field effect transistor, the source electrode of described second field effect transistor is connected with the input of described second current detection circuit, the drain electrode of described second field effect transistor is connected with described warm white LED array.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201521128192.0U CN205491361U (en) | 2015-12-29 | 2015-12-29 | LED lamp of adjustable colour temperature |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201521128192.0U CN205491361U (en) | 2015-12-29 | 2015-12-29 | LED lamp of adjustable colour temperature |
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| CN205491361U true CN205491361U (en) | 2016-08-17 |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106793325A (en) * | 2017-01-04 | 2017-05-31 | 上海晶丰明源半导体股份有限公司 | The driving method of lighting apparatus, LED drive circuit and LED illumination |
| WO2017114146A1 (en) * | 2015-12-29 | 2017-07-06 | Sengled Co., Ltd. | Color-temperature adjustable led lighting device and method for adjusting color temperature of led lighting device |
| CN108449824A (en) * | 2017-02-16 | 2018-08-24 | 朗德万斯公司 | LED module and method for operating LED module |
| EP3367756A1 (en) * | 2017-02-28 | 2018-08-29 | Leedarson Lighting Co., Ltd. | Light emitting diode circuit capable of adjusting color temperature |
| CN111028766A (en) * | 2018-10-05 | 2020-04-17 | 三星显示有限公司 | Pixel and display device |
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2015
- 2015-12-29 CN CN201521128192.0U patent/CN205491361U/en active Active
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2017114146A1 (en) * | 2015-12-29 | 2017-07-06 | Sengled Co., Ltd. | Color-temperature adjustable led lighting device and method for adjusting color temperature of led lighting device |
| US10045419B2 (en) | 2015-12-29 | 2018-08-07 | Sengled Co., Ltd. | Color-temperature adjustable LED lightning device and method for adjusting color temperature of LED lighting device |
| CN106793325A (en) * | 2017-01-04 | 2017-05-31 | 上海晶丰明源半导体股份有限公司 | The driving method of lighting apparatus, LED drive circuit and LED illumination |
| CN106793325B (en) * | 2017-01-04 | 2020-03-20 | 上海晶丰明源半导体股份有限公司 | Lighting device, LED drive circuit, and LED lighting drive method |
| CN108449824A (en) * | 2017-02-16 | 2018-08-24 | 朗德万斯公司 | LED module and method for operating LED module |
| CN108449824B (en) * | 2017-02-16 | 2020-06-23 | 朗德万斯公司 | LED module and method for operating an LED module |
| EP3367756A1 (en) * | 2017-02-28 | 2018-08-29 | Leedarson Lighting Co., Ltd. | Light emitting diode circuit capable of adjusting color temperature |
| CN111028766A (en) * | 2018-10-05 | 2020-04-17 | 三星显示有限公司 | Pixel and display device |
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| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of utility model: LED lamp with adjustable color temperature Effective date of registration: 20230227 Granted publication date: 20160817 Pledgee: Tongxiang Yunbei Investment Construction Co.,Ltd. Pledgor: SENGLED Co.,Ltd. Registration number: Y2023980033490 |
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