CN201706260U - LED lamp capable of changing color temperature and brightness - Google Patents
LED lamp capable of changing color temperature and brightness Download PDFInfo
- Publication number
- CN201706260U CN201706260U CN2010201875421U CN201020187542U CN201706260U CN 201706260 U CN201706260 U CN 201706260U CN 2010201875421 U CN2010201875421 U CN 2010201875421U CN 201020187542 U CN201020187542 U CN 201020187542U CN 201706260 U CN201706260 U CN 201706260U
- Authority
- CN
- China
- Prior art keywords
- led lamp
- microprocessor
- output
- joins
- filter
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Images
Landscapes
- Circuit Arrangement For Electric Light Sources In General (AREA)
Abstract
An LED lamp capable of changing color temperature and brightness comprises a filer rectifier circuit (1), a switch control circuit (2), a pulse transformer (T), a constant current driving circuit (3), a microprocessor (N3), a first switch triode (Q2), a second switch triode (Q3), a fourth rectifier diode (D4), a filter resistor (R4) and a fourth filter capacitor (C7). One LED lamp string includes a high color temperature lamp group and a low color temperature lamp group. Two LED lamp string groups are respectively connected with one switch triode in series to be connected to an output end of the constant current driving circuit, and a plurality of output ends of the microprocessor are respectively connected with bases of the switch triodes and a dimming end of a pulse width controller. After the microprocessor is programmed, a trigger end of the microprocessor changes output states of all output ends or duty cycle of an output pulse once receiving a trigger pulse so as to light up or dimming the LED lamp strings with different color temperatures, and can repeat the change for multiple times by switching on and off a power source.
Description
Technical field
The utility model relates to a kind of structure of LED lamp, a kind of LED lamp that can change colour temperature and brightness.
Background technology
Because incandescent lamp has shortcomings such as energy consumption height, life-span weak point, all there are the relevant policies of superseded incandescent lamp countries in the world.The LED light fixture has energy-conservation, as to subtract carbon advantage, is the illuminating product of a new generation.Illuminating LED lamp generally comprises power unit and one group of LED lamp string of being made up of filter rectifier, ON-OFF control circuit, pulse transformer and constant-current drive circuit.The colour temperature and the brightness of this class LED lamp can't be regulated.
Summary of the invention
The utility model is intended to propose a kind of structure that can change the LED lamp of colour temperature and brightness.
This LED lamp that can change colour temperature and brightness comprises filter rectifier, ON-OFF control circuit, pulse transformer, constant-current drive circuit and LED lamp string.Described filter rectifier comprises wave filter, rectifier, first filter capacitor.ON-OFF control circuit comprises pulse width controller, FET, second commutation diode and second filter capacitor.Pulse transformer comprises primary coil, secondary coil and first ancillary coil.Constant-current drive circuit comprises constant-current controller, photo-coupler, the 3rd commutation diode, the 3rd filter capacitor, divider resistance and sample resistance.This LED lamp that can change colour temperature and brightness also comprises microprocessor, first switch triode, second switch triode, the 4th commutation diode, filter resistance and the 4th filter capacitor.One group of second ancillary coil arranged on the described pulse transformer, one end of second ancillary coil and the positive pole of the 4th commutation diode join, the negative pole of the 4th commutation diode joins by the positive pole of filter resistance and the 4th filter capacitor, and the negative pole of the other end of second ancillary coil and the 4th filter capacitor joins.The positive pole of the power end of microprocessor and the 4th filter capacitor joins, and the negative pole of the trigger end of microprocessor and the 4th commutation diode joins.Described LED lamp string is two groups, and wherein first group of LED lamp string is high color temperature lamp, and second group of LED lamp string is low color temperature lamp.First group of LED lamp string and the output of receiving constant-current drive circuit after first switch triode is connected, second group of LED lamp string and the output of also receiving constant-current drive circuit after the second switch triode is connected.First output of microprocessor and the base stage of first switch triode are joined by a resistance, second output of microprocessor and the base stage of second switch triode are joined by a resistance, and the 3rd output of microprocessor and the light modulation end of pulse width controller join.The feedback end of pulse width controller and the colelctor electrode of the triode in the photo-coupler join.
Microprocessor in this LED lamp that can change colour temperature and brightness is programmed, make its output state that when trigger end whenever receives a trigger impulse, changes once each output or output duty of ratio, be used for changing the on off state of switch triode or change the output duty of ratio of pulse width controller, thereby thereby the colour temperature that changes lamp is lighted or closed to the LED lamp string that makes different-colour, perhaps changes the luminosity of LED lamp.Because the 4th filter capacitor can make microprocessor keep one period working time when power supply disconnects, after the input of the power supply of this LED lamp that can change colour temperature and brightness and AC power are connected, AC power close-is opened once, the input of microprocessor is triggered once, just change the state or the output duty of ratio of an output, change the colour temperature or the brightness of a LED lamp, and can circulate by pass-switch power supply repeatedly and repeat this kind conversion.
Description of drawings
Fig. 1 is the schematic diagram of existing LED lamp;
Fig. 2 is the schematic diagram of the LED lamp that can change colour temperature and brightness that the utility model proposes.
The specific embodiment
As shown in Figure 1, existing illuminating LED lamp generally comprises power unit and the one group of LED lamp string LED0 that is made up of filter rectifier 1, ON-OFF control circuit 2, pulse transformer T, constant-current drive circuit 3.This circuit is the led driver of a typical inverse-excitation type isolation structure.Wherein filter rectifier 1 comprises wave filter N0, rectifier DB1, the first filter capacitor C1.ON-OFF control circuit 2 comprises pulse width controller N1, FET Q1, the second commutation diode D2 and the second filter capacitor C3.Pulse transformer T comprises primary coil L1, secondary coil L2 and the first ancillary coil L3.Constant-current drive circuit 3 comprises constant-current controller N2, the 3rd commutation diode D3, the 3rd filter capacitor C5, divider resistance R10 and sample resistance R11.The input of wave filter N0 joins by a K switch and AC power, and the ac input end of the output of wave filter and rectifier DB1 joins.The first filter capacitor C1 is connected between the positive output end and negative output terminal of rectifier.The end of the primary coil L1 of the positive output end of rectifier and pulse transformer joins.The negative output terminal of rectifier by FET Q1 source electrode and the other end of the primary coil L1 of drain electrode and pulse transformer join.The control end DIV of pulse width controller N1 links to each other with the grid of FET Q1, the opening and closing of control FET, thus in L1, produce a dither electric current, through pulse transformer T coupling, in secondary coil L2, obtain corresponding pulse voltage.The positive pole of the output of secondary coil L2 and the 3rd commutation diode D3 joins, the negative pole of the 3rd commutation diode D3 is received the anode of LED lamp string LED0, the 3rd filter capacitor C5 is connected between another output of the negative pole of the 3rd commutation diode D3 and secondary coil L2, and another output of the negative terminal of LED0 and secondary coil L2 joins.Pulse voltage among secondary coil L2 output dc voltage after D3 rectification, C5 filtering is given LED0.Divider resistance R10 and the two ends of receiving LED0 after sample resistance R11 connects.Divider resistance R10 links to each other with the signal input part of constant-current controller N2 with the tie point of sample resistance R11.The output of constant-current controller N2 is connected to a diode QP2 in the photo-coupler, is connected to a triode QP1 in the photo-coupler on the light modulation end DIM of pulse width controller N1.The variation of the voltage on the LED0 (electric current) feeds back to pulse width controller N1 by sample resistance R11, constant-current controller N2 and photo-coupler QP1, QP2, adjusts the dutycycle of the conduction and cut-off of FET.Pulse width controller N1 is by the first ancillary coil L3 supply of electrical energy.Diode D1 is a fly-wheel diode among the figure, when FET Q1 ends, by D1 the energy of inductance winding is discharged to load.
This LED lamp that can change colour temperature and brightness that the utility model proposes is to have increased a microprocessor N3 on circuit shown in Figure 1, and its principle as shown in Figure 2.This LED lamp that can change colour temperature and brightness comprises filter rectifier 1, ON-OFF control circuit 2, pulse transformer T, constant-current drive circuit 3 and LED lamp string.Described filter rectifier comprises wave filter N0, rectifier DB1, the first filter capacitor C1.ON-OFF control circuit comprises pulse width controller N1, FET Q1, the second commutation diode D2 and the second filter capacitor C3.Pulse transformer comprises primary coil L1, secondary coil L2 and the first ancillary coil L3.Constant-current drive circuit comprises constant-current controller N2, photo-coupler QP1, QP2, the 3rd commutation diode D3, the 3rd filter capacitor C5, divider resistance R10 and sample resistance R11.This LED lamp that can change colour temperature and brightness also comprises microprocessor N3, the first switch triode Q2, second switch triode Q3, the 4th commutation diode D4, filter resistance R4 and the 4th filter capacitor C7.Described pulse transformer T goes up also has one group of second ancillary coil L4, one end of second ancillary coil and the positive pole of the 4th commutation diode D4 join, the negative pole of the 4th commutation diode joins by the positive pole of filter resistance R4 and the 4th filter capacitor C7, and the negative pole of the other end of second ancillary coil and the 4th filter capacitor C7 joins.The power end VCC of microprocessor N3 and the positive pole of the 4th filter capacitor C7 join, and the trigger end CK of microprocessor and the negative pole of the 4th commutation diode D4 join.The trigger end CK of microprocessor N3 is that negative pole by current-limiting resistance R6 and the 4th commutation diode D4 joins among the figure, and C9 is an integrating capacitor.Described LED lamp string is two groups, and wherein first group of LED lamp string LED1 is high color temperature lamp (white), and second group of LED lamp string LED2 is low color temperature lamp (warm colour).LED1 and the output of receiving constant-current drive circuit 3 after the first switch triode Q2 connects, just the positive output end of the anode of LED1 and constant-current drive circuit joins, the negative terminal of LED1 and the colelctor electrode of Q2 join, and the emitter stage of Q2 and the negative output terminal of constant-current drive circuit join.LED2 and the output of receiving constant-current drive circuit 3 after second switch triode Q3 connects, just the positive output end of the anode of LED2 and constant-current drive circuit joins, the negative terminal of LED2 and the colelctor electrode of Q3 join, and the emitter stage of Q3 and the negative output terminal of constant-current drive circuit join.First output O0 of microprocessor and the base stage of the first switch triode Q2 are joined by a resistance R 8, second output O1 of microprocessor and the base stage of second switch triode Q3 are joined by a resistance R 9, and the 3rd output PWM of microprocessor and the light modulation end DIM of pulse width controller N1 join.The feedback end FB of pulse width controller N1 and the colelctor electrode of the triode QP1 in the photo-coupler join the grounded emitter of QP1.C6 also is a filter capacitor among the figure, and it and R4, C7 form π type RC filter circuit, provide operating voltage to microprocessor.
Microprocessor in this LED lamp that can change colour temperature and brightness is programmed, make its output state that when trigger end CK whenever receives a trigger impulse, changes once each output O0, O1, PWM or output duty of ratio, and then the output duty of ratio of the on off state of change switch triode Q2, Q3 or change pulse width controller N1, thereby thereby the LED lamp string that makes different-colour is lighted the colour temperature that changes lamp, perhaps changes the luminosity of LED lamp.For example, each output of microprocessor can be pressed following three kinds of state settings:
(1) the O0 end is 100% pulse for dutycycle for low level, PWM end for high level, O1 end;
(2) the O0 end is 50% pulse for dutycycle for low level, PWM end for high level, O1 end;
(3) the O0 end is 25% pulse for dutycycle for high level, PWM end for low level, O1 end; Such setting, this LED lamp that can change colour temperature and brightness are first kind of state when initially turning on light, the coloured light that turns white, total power; Trigger end changes second kind of state, the coloured light that turns white, half-power into when receiving first trigger impulse; Trigger end changes the third state into when receiving second trigger impulse, send out warm colour light, 1/4 power; Trigger end is converted to first kind of state, the coloured light that turns white, total power again when receiving the 3rd trigger impulse.So (one) → (two) → (three) → (one) circulation repeated transformation.Because the 4th filter capacitor can make microprocessor keep one period working time when power supply disconnects, after the input of the power supply of this LED lamp that can change colour temperature and brightness and AC power are connected, AC power close-is opened once, the input of microprocessor is triggered once, just change the state or the output duty of ratio of an output, once become light.K switch is connected after disconnecting the long period again, and when the electric weight in the capacitor C 7 was not enough to keep microprocessor work, circuit can be started working from original state again again.
Wave filter N0, rectifier DB1, pulse width controller N1, constant-current controller N2 and microprocessor N3 in this LED lamp that can change colour temperature and brightness all can adopt known model commonly used.
The utility model can be applicable to various indoor lamp lighting devices such as bulb class, fluorescent tube class, spotlight, strip light, following illuminator, ornament lamp, Recessed light class.
Claims (1)
1. LED lamp that can change colour temperature and brightness, comprise filter rectifier (1), ON-OFF control circuit (2), pulse transformer (T), constant-current drive circuit (3) and LED lamp string, described filter rectifier comprises wave filter (N0), rectifier (DB1), first filter capacitor (C1), ON-OFF control circuit comprises pulse width controller (N1), FET (Q1), second commutation diode (D2) and second filter capacitor (C3), pulse transformer comprises primary coil (L1), secondary coil (L2) and first ancillary coil (L3), constant-current drive circuit comprises constant-current controller (N2), photo-coupler (QP1, QP2), the 3rd commutation diode (D3), the 3rd filter capacitor (C5), divider resistance (R10) and sample resistance (R11), it is characterized in that this LED lamp that can change colour temperature and brightness also comprises microprocessor (N3), first switch triode (Q2), second switch triode (Q3), the 4th commutation diode (D4), filter resistance (R4) and the 4th filter capacitor (C7), one group of second ancillary coil (L4) arranged on the described pulse transformer (T), the positive pole of one end of second ancillary coil and the 4th commutation diode (D4) joins, the negative pole of the 4th commutation diode joins by the positive pole of filter resistance (R4) with the 4th filter capacitor (C7), the negative pole of the other end of second ancillary coil and the 4th filter capacitor (C7) joins, the power end (VCC) of microprocessor (N3) joins with the positive pole of the 4th filter capacitor (C7), the trigger end of microprocessor (CK) joins with the negative pole of the 4th commutation diode (D4), described LED lamp string is two groups, wherein first group of LED lamp string (LED1) is high color temperature lamp, second group of LED lamp string (LED2) is low color temperature lamp, first group of LED lamp string and the output of receiving constant-current drive circuit (3) after first switch triode (Q2) is connected, second group of LED lamp string and the output of receiving constant-current drive circuit (3) after second switch triode (Q3) is connected, first output (O0) of microprocessor joins by a resistance (R8) with the base stage of first switch triode (Q2), second output (O1) of microprocessor joins by a resistance (R9) with the base stage of second switch triode (Q3), the 3rd output (PWM) of microprocessor joins with the light modulation end (DIM) of pulse width controller (N1), and the colelctor electrode of the triode (QP1) in the feedback end (FB) of pulse width controller (N1) and the photo-coupler joins.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010201875421U CN201706260U (en) | 2010-05-11 | 2010-05-11 | LED lamp capable of changing color temperature and brightness |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010201875421U CN201706260U (en) | 2010-05-11 | 2010-05-11 | LED lamp capable of changing color temperature and brightness |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201706260U true CN201706260U (en) | 2011-01-12 |
Family
ID=43443418
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010201875421U Expired - Fee Related CN201706260U (en) | 2010-05-11 | 2010-05-11 | LED lamp capable of changing color temperature and brightness |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201706260U (en) |
Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102196643A (en) * | 2011-06-27 | 2011-09-21 | 许瑞清 | Linear constant-current controller, chip and driving device |
| CN102612228A (en) * | 2012-03-12 | 2012-07-25 | 青岛莱菲迪光电科技有限公司 | LED (Light-emitting Diode) constant-current and constant-temperature driving power supply |
| CN102630111A (en) * | 2011-02-07 | 2012-08-08 | 赛普拉斯半导体公司 | Mutli-string led current control system and method |
| WO2012155550A1 (en) * | 2011-05-19 | 2012-11-22 | Gao Yuan | Constant current driver circuit for led |
| CN102883498A (en) * | 2011-07-13 | 2013-01-16 | 旭丽电子(广州)有限公司 | Storage dimming method, storage type dimming lamp and dimming driving circuit |
| CN103152916A (en) * | 2013-02-01 | 2013-06-12 | 中山市隆源光电有限公司 | Light-emitting diode (LED) lighting lamp with adjustable light and adjustable color temperature and control method thereof |
| WO2013127031A1 (en) * | 2012-03-02 | 2013-09-06 | 苏州浩森电子科技有限公司 | Led drive device and control method therefor |
| CN103841704A (en) * | 2012-11-23 | 2014-06-04 | 海洋王（东莞）照明科技有限公司 | Led lamp control circuit |
| CN104582189A (en) * | 2015-01-15 | 2015-04-29 | 魏泽科 | Intelligent light dimming and color adjusting LED isolation drive circuit |
| WO2016074536A1 (en) * | 2014-11-12 | 2016-05-19 | 肖志军 | Dimming and color correction circuit for led light |
| CN105979625A (en) * | 2016-05-17 | 2016-09-28 | 英飞特电子（杭州）股份有限公司 | LED color temperature adjustment circuit |
| CN106658871A (en) * | 2017-02-28 | 2017-05-10 | 漳州立达信光电子科技有限公司 | Light emitting diode circuit with color temperature adjustment capability |
| CN110602829A (en) * | 2019-09-26 | 2019-12-20 | 中央民族大学 | Lighting LED driving circuit, device and control method |
-
2010
- 2010-05-11 CN CN2010201875421U patent/CN201706260U/en not_active Expired - Fee Related
Cited By (18)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102630111B (en) * | 2011-02-07 | 2015-07-08 | 赛普拉斯半导体公司 | Mutli-string led current control system and method |
| CN102630111A (en) * | 2011-02-07 | 2012-08-08 | 赛普拉斯半导体公司 | Mutli-string led current control system and method |
| WO2012155550A1 (en) * | 2011-05-19 | 2012-11-22 | Gao Yuan | Constant current driver circuit for led |
| CN102196643A (en) * | 2011-06-27 | 2011-09-21 | 许瑞清 | Linear constant-current controller, chip and driving device |
| CN102883498B (en) * | 2011-07-13 | 2015-04-01 | 光宝电子(广州)有限公司 | Storage dimming method, storage type dimming lamp and dimming driving circuit |
| CN102883498A (en) * | 2011-07-13 | 2013-01-16 | 旭丽电子(广州)有限公司 | Storage dimming method, storage type dimming lamp and dimming driving circuit |
| WO2013127031A1 (en) * | 2012-03-02 | 2013-09-06 | 苏州浩森电子科技有限公司 | Led drive device and control method therefor |
| CN102612228A (en) * | 2012-03-12 | 2012-07-25 | 青岛莱菲迪光电科技有限公司 | LED (Light-emitting Diode) constant-current and constant-temperature driving power supply |
| CN103841704A (en) * | 2012-11-23 | 2014-06-04 | 海洋王（东莞）照明科技有限公司 | Led lamp control circuit |
| CN103152916A (en) * | 2013-02-01 | 2013-06-12 | 中山市隆源光电有限公司 | Light-emitting diode (LED) lighting lamp with adjustable light and adjustable color temperature and control method thereof |
| WO2016074536A1 (en) * | 2014-11-12 | 2016-05-19 | 肖志军 | Dimming and color correction circuit for led light |
| CN104486860B (en) * | 2014-11-12 | 2018-03-09 | 肖志军 | A kind of LED light adjusting circuit |
| CN104582189A (en) * | 2015-01-15 | 2015-04-29 | 魏泽科 | Intelligent light dimming and color adjusting LED isolation drive circuit |
| CN105979625A (en) * | 2016-05-17 | 2016-09-28 | 英飞特电子（杭州）股份有限公司 | LED color temperature adjustment circuit |
| CN105979625B (en) * | 2016-05-17 | 2018-03-06 | 英飞特电子（杭州）股份有限公司 | A kind of LED colour temperature adjusts circuis |
| CN106658871A (en) * | 2017-02-28 | 2017-05-10 | 漳州立达信光电子科技有限公司 | Light emitting diode circuit with color temperature adjustment capability |
| CN110602829A (en) * | 2019-09-26 | 2019-12-20 | 中央民族大学 | Lighting LED driving circuit, device and control method |
| CN110602829B (en) * | 2019-09-26 | 2021-11-16 | 中央民族大学 | Lighting LED driving circuit, device and control method |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN201706260U (en) | LED lamp capable of changing color temperature and brightness | |
| CN105101543B (en) | Led drive circuit | |
| CN202172516U (en) | Brightness and color temperature adjustable LED lamp | |
| CN105282919A (en) | Circuit and lighting unit for dimmable lighting applications | |
| EP2850916B1 (en) | Driver circuit for solid state light sources | |
| CN104066237B (en) | A kind of LED driving method | |
| CN102917486A (en) | LED lamp adjustable in luminance and color temperature | |
| CN103547014A (en) | Load driving device associated with light-emitting diode lamp tube and method of load driving device | |
| CN201177243Y (en) | Adjustable light LED lighting lamp | |
| CN105657932A (en) | Light source drive circuit and brightness and color temperature controller | |
| CN203814012U (en) | Driving circuit capable of improving LED visual lighting effect | |
| CN201680197U (en) | LED lamp capable of changing brightness | |
| CN104684219B (en) | LED lighting device and drive circuit | |
| CN201860494U (en) | Light-emitting diode driving circuit with light modulating sequential control | |
| CN105282940A (en) | Dimmable double-output LED driving power source and dimming method thereof | |
| CN201680198U (en) | LED lamp capable of changing color temperature | |
| CN101754538B (en) | Adjustable photocontrol circuit of LED (light-emitting diode) lamp | |
| CN104470134A (en) | Method and device for controlling LED lamp color temperature changing | |
| CN105682294A (en) | Led driving power supply | |
| CN205093002U (en) | LED drive circuit | |
| CN201742598U (en) | LED lamp automatically turned off after time delay | |
| CN201639821U (en) | Dimming control circuit of LED lamp | |
| CN203934047U (en) | A kind of LED drive circuit | |
| CN103634986A (en) | Multipath dimming device and dimming method thereof | |
| CN201259180Y (en) | Highly effective LED illumination barrel lamp |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20110112 Termination date: 20170511 |