CN201443698U - LED light-emitting device with changeable color temperature - Google Patents
LED light-emitting device with changeable color temperature Download PDFInfo
- Publication number
- CN201443698U CN201443698U CN200920025974XU CN200920025974U CN201443698U CN 201443698 U CN201443698 U CN 201443698U CN 200920025974X U CN200920025974X U CN 200920025974XU CN 200920025974 U CN200920025974 U CN 200920025974U CN 201443698 U CN201443698 U CN 201443698U
- Authority
- CN
- China
- Prior art keywords
- led lamp
- temperature
- light
- lamp group
- emitting device
- 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 - Lifetime
Links
Images
Landscapes
- Circuit Arrangement For Electric Light Sources In General (AREA)
Abstract
The utility model relates to an LED light-emitting device with changeable color temperature, comprising three LED lamp groups with different colors, a controller and a temperature sensor, wherein the first LED lamp group includes white light LED lamp(s), the second LED lamp group includes yellow light LED lamp(s), the third LED lamp group includes red light LED lamp(s), and each LED lamp group comprises at least one LED lamp; the environment temperature can be transmitted into the controller by the temperature sensor; the controller can be used for finding out the set range according to the comparison result and then adjusting the light intensity proportion of the three LED lamp groups according to voltage control parameters of the white light LED lamp(s), the yellow light LED lamp(s) and the red light LED lamp(s) corresponding to the response voltage parameters of the temperature sensor, so that the color temperature can be automatically changed along with the change of the environment temperature; and as the three LED lamp groups with the different colors are adopted, and especially red light is supplemented, the color rendering property can be greatly improved, and the light spectrum is closer to natural light.
Description
Technical field
The utility model relates to a kind of LED light-emitting device, relates in particular to a kind of colour temperature and changes the LED light-emitting device of a kind of variable color temperature change with ambient temperature, belongs to electronic technology field.
Background technology
The white light LEDs of single wavelength is non-existent.White LED light source realizes by coating gold-tinted fluorescent material on blue-light LED chip that generally blue light excites the gold-tinted of generation to synthesize with existing blue light and just formed required white light by gold-tinted fluorescent material.The white light colour temperature that LED sends depends on the synthetic ratio of gold-tinted and blue light, in case colour temperature can not change with regard to determining after fluorescent glue was coated to the blue-light LED chip surface, generally, white LED light source is to be that the gold-tinted of 555nm～585nm is synthetic by the wave-length coverage that its natural wavelength scope blue light that is 430nm～480nm and fluorescent material excite, colour temperature is in 2000K～10, between the 000K but non-adjustable.Yet we understand the illumination according to the different needs different-colour of temperature or environment in the reality illumination, and we wish that the light that lamp sends is warm-toned during such as winter, and can send the light of cool tone summer; Be cool tone such as morning of one day again, and be warm-toned evening, can only adjust or change the LED lamp of different tones at present as required, a kind of colour temperature also not occurring can not satisfy people's requirement with the LED lamp of variation of ambient temperature.
The utility model content
Problem to be solved in the utility model is in order to overcome the defective of above-mentioned technology, a kind of variation according to environment temperature to be provided, can adjusting the LED light-emitting device of colour temperature with a kind of variable color temperature of the temperature that conforms automatically.
For solving above technical problem, the technical solution adopted in the utility model is: a kind of LED light-emitting device of variable color temperature is characterized in that: described LED light-emitting device comprises the LED lamp group of three different colours, a controller and a temperature sensor;
Wherein, a LED lamp group is a white LED lamp, and its wave-length coverage is to be that the blue light of 430-480nm and gold-tinted that wavelength is 555-585nm are synthesized by emission wavelength;
The 2nd LED lamp group is the yellow light LED lamp, and wavelength is 555-585nm;
The 3rd LED lamp group is the red-light LED lamp, and wavelength is 600-630nm;
More than in each LED lamp group the quantity of LED lamp be at least 1;
Temperature sensor carries out sensing to the temperature of surrounding environment, and the temperature signal of being surveyed is sent to controller;
Controller, receive temperature sensor institute sensed temperature signal, and temperature signal that receives and the temperature value that sets compared, find out and this temperature value corresponding LED lamp group Control of Voltage parameter, and offer the drive current of LED lamp group with this parameter value adjustment.
The prioritization scheme of white LED lamp, the colour temperature of described white LED lamp are 6000K～8000K.
The prioritization scheme of controller, described controller comprise CPU control module, memory cell, signal processing circuit and the output interface drive circuit of electrical connection;
Store in the described memory cell and the corresponding voltage parameter of the response of temperature sensor, and store the quantity of LED lamp in the Control of Voltage parameter of white LED lamp group, yellow light LED lamp group and red-light LED lamp group and each the LED lamp group;
Described signal processing circuit is exported to the CPU control module with temperature sensor institute sensed temperature signal, the CPU control module with the stored information in this signal and the memory cell relatively, the output control signal is also controlled the drive current of described three LED modules with different colors lamp groups through the output interface drive circuit.
The utility model adopts above technical scheme, compare with the prior art scheme and to have the following advantages: temperature sensor can be sent to controller with environment temperature, controller is according to result relatively, find out between the setting district of this temperature, regulate the luminous intensity ratio of these three groups of LED lamp groups again according to the Control of Voltage parameter of white LED lamp group, yellow light LED lamp group and the red-light LED lamp group corresponding, change colour temperature automatically along with the variation of environment temperature with realization with this temperature sensor response voltage parameter; Owing to adopt the lamp group of three groups of different colours, particularly replenished red-light LED lamp group, greatly improved the colour rendering of light-emitting device, its spectrum is more near natural daylight.
The utility model is described in further detail below in conjunction with drawings and embodiments
Description of drawings
Accompanying drawing 1 is the structural representation of LED light-emitting device among the utility model embodiment 1;
Accompanying drawing 2 is the structural representation of LED light-emitting device among the utility model embodiment 1;
Accompanying drawing 3 is the structural representation of LED light-emitting device among the utility model embodiment 2;
Accompanying drawing 4 is the structural representation of LED light-emitting device among the utility model embodiment 2;
Accompanying drawing 5 is the structured flowchart of the utility model embodiment middle controller;
Accompanying drawing 6 is the block diagram of implementation method among the utility model embodiment.
Among the figure: 1-matrix, 2-white LED lamp, 3-yellow light LED lamp, 4-red-light LED lamp
The specific embodiment
Following embodiment is an example to adopt the utility model LED light-emitting device to make road lighting lamp.
Fig. 1, Fig. 2 is the structural representation of LED light-emitting device among the utility model embodiment 1, the LED lamp group of three different colours is installed on matrix 1, the one LED lamp group is a white LED lamp 2, quantity is 4, colour temperature is 6500K, wave-length coverage is to be that the blue light of 430-480nm and the wavelength that sent by the blue light institute excited fluorescent powder of above-mentioned wavelength are that the gold-tinted of 555-585nm is synthesized by emission wavelength, the 2nd LED lamp group is a yellow light LED lamp 3, quantity is 4, wavelength is 555-585nm, sent by the blue light institute excited fluorescent powder of above-mentioned wavelength, and the 3rd LED lamp group is a red-light LED lamp 4, quantity is 4, and wavelength is 600-630nm.
Fig. 5 is the structured flowchart of LED light-emitting device middle controller, the LED light-emitting device of variable color temperature also comprises a controller and a temperature sensor, controller comprises the CPU control module of electrical connection, memory cell, signal processing circuit and output interface drive circuit 1, output interface drive circuit 2 and output interface drive circuit 3, temperature sensor carries out sensing to the temperature of surrounding environment, and the temperature signal of being surveyed sent to signal processing circuit, signal processing circuit is exported to the CPU control module with temperature sensor institute sensed temperature signal, after the CPU control module is handled this signal, the output control signal is given 3 output interface drive circuits, the drive current of output interface drive circuit 1 control constant-current source 1 red LED lamp set, the drive current of output interface drive circuit 2 control constant-current sources 2 yellow LED lamp set, the drive current of output interface drive circuit 3 control constant-current sources 3 white led lamps groups.
Fig. 6 is the block diagram that LED light-emitting device colour temperature changes implementation method, at first in memory cell, preset one group of temperature parameter and with the Control of Voltage V parameter r of this temperature parameter corresponding temperature sensor response voltage parameter Vs and white LED lamp group Control of Voltage V parameter w, yellow light LED lamp group Control of Voltage V parameter y and red-light LED lamp group, and preset the quantity of LED lamp in each LED lamp group;
Temperature sensor environment temperature Tc to external world samples then, obtains temperature analog signal;
Signal processing circuit is sent to the CPU control module after temperature analog signal is converted to temperature digital signal Vc;
The CPU control module compares temperature digital signal Vc that receives and the temperature sensor response voltage parameter Vs that presets, and obtains the Control of Voltage V parameter r and the output of white LED lamp group Control of Voltage V parameter w, the yellow light LED lamp group Control of Voltage V parameter y corresponding with this temperature sensor response voltage parameter Vs and red-light LED lamp group according to result relatively;
Control the drive current of white LED lamp group, yellow light LED lamp group and red-light LED lamp group respectively to regulate the luminous intensity ratio of these three groups of LED lamp groups, with the colour temperature that realizes adapting by 3 output interface drive circuits and 3 corresponding with it constant-current sources again with environment temperature.
Specific requirement to the LED light-emitting device is: the light intensity of white LED lamp group remains unchanged, and changes the colour temperature of illuminating lamp in four different ambient temperature scopes, a) is lower than 0 ℃ that is:, b) 0 ℃-15 ℃, c) 15 ℃-30 ℃, d) is higher than 30 ℃.
1) at first presetting in memory cell corresponding to environment temperature is the pairing magnitude of voltage Vs1 of response, Vs2 and the Vs3 of 0 degree, 15 degree and 30 temperature sensors when spending, and wherein Vs1 is that 5.0V, Vs2 are that 5.40V and Vs3 are 5.75V;
2) in memory cell, preset 4 numerical value: a1 of the Control of Voltage V parameter r of red-light LED lamp group again, a2, a3 and a4,4 numerical value: b1 of the Control of Voltage V parameter y of yellow light LED lamp group, b2, b3 and b4, wherein the a1 corresponding voltage value is 9.6V, the a2 corresponding voltage value is 9.2V, the a3 corresponding voltage value is 8.4V, the a4 corresponding voltage value is 8.0V, the b1 corresponding voltage value is 13.2V, the b2 corresponding voltage value is 13.4V, the b3 corresponding voltage value is 12.8V, the b4 corresponding voltage value is 12.0V, owing to require the light intensity of white LED lamp group to remain unchanged, therefore the Control of Voltage V parameter w of white LED lamp group is arranged on 13.2V all the time, i.e. the electric current that constant-current source 3 outputs drive the white LED lamp group is always 350mA;
3) environment temperature is Tc, and it is Vc that temperature sensor records the sampled value corresponding with environment temperature Tc;
The relation of temperature and Control of Voltage parameter such as following table:
| Environment temperature Tc | Temperature digital signal Vc | Control of Voltage V parameter r | Control of Voltage V parameter y |
| Tc＜0℃ | Vc＜Vs1 | a1(9.6V) | b1(13.2V) |
| 0℃＜Tc＜15℃ | Vs1＜Vc＜Vs2 | a2(9.2V) | b2(13.4V) |
| 15℃＜Tc＜30℃ | Vs2＜Vc＜Vs3 | a3(8.4V) | b3(12.8V) |
| Tc＞30℃ | Vc＞Vs3 | a4(8.0V) | b4(12.0V) |
When being controlled at the temperature of LED light-emitting device below 0 ℃, the temperature digital signal voltage Vc that temperature sensor sampling obtains is lower than 5.0V, the Control of Voltage V parameter r of CPU control module output is a1, corresponding voltage value is 9.6V, the electric current of constant-current source 1 output driving red-light LED lamp group is 350mA during corresponding voltage value 9.6V, the Control of Voltage V parameter y of CPU control module output is b1, corresponding voltage value is 13.2V, the electric current of constant-current source 2 output driving yellow light LED lamp groups is 300mA during corresponding voltage value 13.2V, and the colour temperature of He Cheng White LED light-emitting device is 2710K at last;
When being controlled at the temperature of LED light-emitting device between 0 ℃ and 15 ℃, the temperature digital signal voltage Vc that temperature sensor sampling obtains is between 5.0V to 5.4V, CPU control module output Control of Voltage V parameter r be a2, corresponding voltage value is 9.2V, the electric current of constant-current source 1 output driving red-light LED lamp group is 300mA during corresponding voltage value 9.2V, the Control of Voltage V parameter y of CPU control module output is b2, corresponding voltage value is 13.4V, the electric current of constant-current source 2 output driving yellow light LED lamp groups is 350mA during corresponding voltage value 13.4V, and the colour temperature of He Cheng White LED light-emitting device is 3460K at last;
When being controlled at the temperature of LED light-emitting device between 15 ℃ and 30 ℃, the temperature digital signal voltage Vc that temperature sensor sampling obtains is between 5.4V to 5.75V, the Control of Voltage V parameter r of CPU control module output is a3, corresponding voltage value is 8.4V, the electric current of constant-current source 1 output driving red-light LED lamp group is 100mA during corresponding voltage value 8.4V, the Control of Voltage V parameter y of CPU control module output is b3, corresponding voltage value is 12.8V, the electric current of constant-current source 2 output driving yellow light LED lamp groups is 250mA during corresponding voltage value 12.8V, and the colour temperature of He Cheng White LED light-emitting device is 5110K at last;
When being controlled at the temperature of LED light-emitting device more than 30 ℃, the temperature digital signal voltage Vc that temperature sensor sampling obtains is higher than 5.75V, the Control of Voltage V parameter r of CPU control module output is a4, corresponding voltage value is 8.0V, the electric current of constant-current source 1 output driving red-light LED lamp group is 50mA during corresponding voltage value 8.0V, the Control of Voltage V parameter y of CPU control module output is b4, corresponding voltage value is 12.0V, the electric current of constant-current source 2 output driving yellow light LED lamp groups is 50mA during corresponding voltage value 12.0V, and the colour temperature of He Cheng White LED light-emitting device is 6450K at last.
Fig. 3, Fig. 4 is the structural representation of LED light-emitting device in the utility model embodiment 2, the LED lamp group of three different colours is installed on matrix 1, the one LED lamp group is a white LED lamp 2, quantity is 6, colour temperature is 6500K, wave-length coverage is to be that the blue light of 430-480nm and the wavelength that sent by the blue light institute excited fluorescent powder of above-mentioned wavelength are that the gold-tinted of 555-585nm is synthesized by emission wavelength, the 2nd LED lamp group is a yellow light LED lamp 3, quantity is 4, wavelength is 555-585nm, is similarly the blue light institute excited fluorescent powder that is subjected to above-mentioned wavelength and sends, and the 3rd LED lamp group is a red-light LED lamp 4, quantity is 4, and wavelength is 600-630nm.
Fig. 5 is the structured flowchart of LED light-emitting device middle controller, the LED light-emitting device of variable color temperature also comprises a controller and a temperature sensor, controller comprises the CPU control module of electrical connection, memory cell, signal processing circuit and output interface drive circuit 1, output interface drive circuit 2 and output interface drive circuit 3, temperature sensor carries out sensing to the temperature of surrounding environment, and the temperature signal of being surveyed sent to signal processing circuit, signal processing circuit is exported to the CPU control module with temperature sensor institute sensed temperature signal, after the CPU control module is handled this signal, the output control signal is given 3 output interface drive circuits, the drive current of output interface drive circuit 1 control constant-current source 1 red LED lamp set, the drive current of output interface drive circuit 2 control constant-current sources 2 yellow LED lamp set, the drive current of output interface drive circuit 3 control constant-current sources 3 white led lamps groups.
Fig. 6 is the block diagram that LED light-emitting device colour temperature changes implementation method, at first in memory cell, preset one group of temperature parameter and with the Control of Voltage V parameter r of this temperature parameter corresponding temperature sensor response voltage parameter Vs and white LED lamp group Control of Voltage V parameter w, yellow light LED lamp group Control of Voltage V parameter y and red-light LED lamp group, and preset the quantity of LED lamp in each LED lamp group;
Temperature sensor environment temperature Tc to external world samples then, obtains temperature analog signal;
Signal processing circuit is sent to the CPU control module after temperature analog signal is converted to temperature digital signal Vc;
The CPU control module compares temperature digital signal Vc that receives and the temperature sensor response voltage parameter Vs that presets, and obtains the Control of Voltage V parameter r and the output of white LED lamp group Control of Voltage V parameter w, the yellow light LED lamp group Control of Voltage V parameter y corresponding with this temperature sensor response voltage parameter Vs and red-light LED lamp group according to result relatively;
Control the drive current of white LED lamp group, yellow light LED lamp group and red-light LED lamp group respectively to regulate the luminous intensity ratio of these three groups of LED lamp groups, with the colour temperature that realizes adapting by 3 output interface drive circuits and 3 corresponding with it constant-current sources again with environment temperature.
Specific requirement to the LED light-emitting device is: change the colour temperature of illuminating lamp in five different ambient temperature scopes, that is: a) be lower than 0 ℃, b) 0 ℃-10 ℃, c) 10 ℃ to 20 ℃, d) 20 ℃-30 ℃, e) be higher than 30 ℃.
1) at first presetting in memory cell corresponding to environment temperature is the pairing magnitude of voltage Vs1 of response, Vs2, Vs3 and the Vs4 of 0 degree, 10 degree, 20 degree and 30 temperature sensors when spending, and wherein Vs1 is that 5.0V, Vs2 are that 5.25V, Vs3 are that 5.50V and Vs4 are 5.75V;
2) in memory cell, preset 5 numerical value: a1 of the Control of Voltage V parameter r of red-light LED lamp group again, a2, a3, a4 and a5,5 numerical value: b1 of the Control of Voltage V parameter y of yellow light LED lamp group, b2, b3, b4 and b5,5 numerical value: c1 of the Control of Voltage V parameter w of white LED lamp group, c2, c3, c4 and c5, wherein the a1 corresponding voltage value is 9.6V, the a2 corresponding voltage value is 9.2V, 3 corresponding voltage value are 8.8V, the a4 corresponding voltage value is 8.4V, the a5 corresponding voltage value is 8.0V, the b1 corresponding voltage value is 13.2V, the b2 corresponding voltage value is 13.4V, the b3 corresponding voltage value is 13.2V, the b4 corresponding voltage value is 12.6V, and the b5 corresponding voltage value is 12.0V, and the c1 corresponding voltage value is 18.9V, the c2 corresponding voltage value is 18.9V, the c3 corresponding voltage value is 19.5V, and the c4 corresponding voltage value is 19.8V, and the c5 corresponding voltage value is 20.1V;
3) environment temperature is Tc, and it is Vc that temperature sensor records the sampled value corresponding with environment temperature Tc;
The relation of temperature and Control of Voltage parameter such as following table:
| Environment temperature Tc | Temperature digital signal Vc | Control of Voltage V parameter r | Control of Voltage V parameter y | Control of Voltage V parameter w |
| Tc＜0℃ | Vc＜Vs1 | a1(9.6V) | b1(13.2V) | c1(18.9V) |
| 0℃＜Tc＜10℃ | Vs1＜Vc＜Vs2 | a2(9.2V) | b2(13.4V) | c2(18.9V) |
| 10℃＜Tc＜20℃ | Vs2＜Vc＜Vs3 | a3(8.8V) | b3(13.2V) | c3(19.5V) |
| 20℃＜Tc＜30℃ | Vs3＜Vc＜Vs4 | a4(8.4V) | b4(12.6V) | c4(19.8V) |
| Tc＞30℃ | Vc＞Vs4 | a5(8.0V) | b5(12.0V) | c5(20.1V) |
When being controlled at the temperature of LED light-emitting device below 0 ℃, the temperature digital signal voltage Vc that temperature sensor sampling obtains is lower than 5.0V, the Control of Voltage V parameter r of CPU control module output is a1, corresponding voltage value is 9.6V, the electric current of constant-current source 1 output driving red-light LED lamp group is 350mA during corresponding voltage value 9.6V, the Control of Voltage V parameter y of CPU control module output is b1, corresponding voltage value is 13.2V, the electric current of constant-current source 2 output driving yellow light LED lamp groups is 300mA during corresponding voltage value 13.2V, the Control of Voltage V parameter w of CPU control module output is c1, corresponding voltage value is 18.9V, the electric current that 3 outputs of corresponding voltage value 18.9V constant-current source drive the white LED lamp group is 200mA, and the colour temperature of He Cheng White LED light-emitting device is 2730K at last;
When being controlled at the temperature of LED light-emitting device between 0 ℃ and 10 ℃, the temperature digital signal voltage Vc that temperature sensor sampling obtains is between 5.0V to 5.25V, the Control of Voltage V parameter r of CPU control module output is a2, corresponding voltage value is 9.2V, the electric current of constant-current source 1 output driving red-light LED lamp group is 300mA during corresponding voltage value 9.2V, the Control of Voltage V parameter y of CPU control module output is b2, corresponding voltage value is 13.4V, the electric current of constant-current source 2 output driving yellow light LED lamp groups is 350mA during corresponding voltage value 13.4V, the Control of Voltage V parameter w of CPU control module output is c2, corresponding voltage value is 18.9V, the electric current of constant-current source 3 output driving white LED lamp groups is 200mA during corresponding voltage value 18.9V, and the colour temperature of He Cheng White LED light-emitting device is 3470K at last;
When being controlled at the temperature of LED light-emitting device between 10 ℃ and 20 ℃, the temperature digital signal voltage Vc that temperature sensor sampling obtains is between 5.25V to 5.5V, the Control of Voltage V parameter r of CPU control module output is a3, corresponding voltage value is 8.8V, the electric current of constant-current source 1 output driving red-light LED lamp group is 200mA during corresponding voltage value 8.8V, the Control of Voltage V parameter y of CPU control module output is b3, corresponding voltage value is 13.2V, the electric current of constant-current source 2 output driving yellow light LED lamp groups is 300mA during corresponding voltage value 13.2V, the Control of Voltage V parameter w of CPU control module output is c3, corresponding voltage value is 19.5V, the electric current of constant-current source 3 output driving white LED lamp groups is 250mA during corresponding voltage value 19.5V, and the colour temperature of He Cheng White LED light-emitting device is 4380K at last;
When being controlled at the temperature of LED light-emitting device between 20 ℃ and 30 ℃, the temperature digital signal voltage Vc that temperature sensor sampling obtains is between 5.5V to 5.75V, the Control of Voltage V parameter r of CPU control module output is a4, corresponding voltage value is 8.4V, the electric current of constant-current source 1 output driving red-light LED lamp group is 100mA during corresponding voltage value 8.4V, the Control of Voltage V parameter y of CPU control module output is b4, corresponding voltage value is 12.6V, the electric current of constant-current source 2 output driving yellow light LED lamp groups is 200mA during corresponding voltage value 12.6V, the Control of Voltage V parameter w of CPU control module output is c4, corresponding voltage value is 19.8V, the electric current of constant-current source 3 output driving white LED lamp groups is 300mA during corresponding voltage value 19.8V, and the colour temperature of He Cheng White LED light-emitting device is 5320K at last;
When being controlled at the temperature of LED light-emitting device more than 30 ℃, the temperature digital signal voltage Vc that temperature sensor sampling obtains is greater than 5.75V, the Control of Voltage V parameter r of CPU control module output is a5, corresponding voltage value is 8.0V, the electric current of constant-current source 1 output driving red-light LED lamp group is 50mA during corresponding voltage value 8.0V, the Control of Voltage V parameter y of CPU control module output is b5, corresponding voltage value is 12.0V, the electric current of constant-current source 2 output driving yellow light LED lamp groups is 50mA during corresponding voltage value 12.0V, the Control of Voltage V parameter w of CPU control module output is c5, corresponding voltage value is 20.1V, the electric current of constant-current source 3 output driving white LED lamp groups is 350mA during corresponding voltage value 20.1V, and the colour temperature of He Cheng White LED light-emitting device is 6470K at last.
Below only be that the utility model is applied to two specific embodiment in the road lighting, those skilled in the art can also be applied to other lighting field according to the technical solution of the utility model, and realizes that multiple concrete colour temperature changes implementation method.
Claims (3)
1. the LED light-emitting device of a variable color temperature, it is characterized in that: described LED light-emitting device comprises the LED lamp group of three different colours, a controller and a temperature sensor;
Wherein, a LED lamp group is a white LED lamp, and its wave-length coverage is to be that the blue light of 430-480nm and gold-tinted that wavelength is 555-585nm are synthesized by emission wavelength;
The 2nd LED lamp group is the yellow light LED lamp, and wavelength is 555-585nm;
The 3rd LED lamp group is the red-light LED lamp, and wavelength is 600-630nm;
More than in each LED lamp group the quantity of LED lamp be at least 1; And
Temperature sensor carries out sensing to the temperature of surrounding environment, and the temperature signal of being surveyed is sent to controller;
Controller, receive temperature sensor institute sensed temperature signal, and temperature signal that receives and the temperature value that sets compared, find out and this temperature value corresponding LED lamp group Control of Voltage parameter, and offer the drive current of LED lamp group with this parameter value adjustment.
2. the LED light-emitting device of a kind of variable color temperature as claimed in claim 1, it is characterized in that: the colour temperature of described white LED lamp is 6000K～8000K.
3. the LED light-emitting device of a kind of variable color temperature as claimed in claim 1 or 2, it is characterized in that: described controller comprises CPU control module, memory cell, signal processing circuit and the output interface drive circuit of electrical connection;
Store in the described memory cell and the corresponding voltage parameter of the response of temperature sensor, and store the quantity of LED lamp in the Control of Voltage parameter of white LED lamp group, yellow light LED lamp group and red-light LED lamp group and each the LED lamp group;
Described signal processing circuit is exported to the CPU control module with temperature sensor institute sensed temperature signal, the CPU control module with the stored information in this signal and the memory cell relatively, the output control signal is also controlled the drive current of described three LED modules with different colors lamp groups through the output interface drive circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200920025974XU CN201443698U (en) | 2009-05-27 | 2009-05-27 | LED light-emitting device with changeable color temperature |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200920025974XU CN201443698U (en) | 2009-05-27 | 2009-05-27 | LED light-emitting device with changeable color temperature |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201443698U true CN201443698U (en) | 2010-04-28 |
Family
ID=42548378
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200920025974XU Expired - Lifetime CN201443698U (en) | 2009-05-27 | 2009-05-27 | LED light-emitting device with changeable color temperature |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201443698U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102734646A (en) * | 2011-04-01 | 2012-10-17 | 上海广茂达光艺科技股份有限公司 | LED downlight |
| CN102734715A (en) * | 2011-04-01 | 2012-10-17 | 上海广茂达光艺科技股份有限公司 | Led ceiling lamp |
| CN102980062A (en) * | 2012-11-12 | 2013-03-20 | 广东威创视讯科技股份有限公司 | Light emitting diode (LED) light source |
| CN103493226A (en) * | 2011-04-22 | 2014-01-01 | 株式会社东芝 | White light source and white light source system using same |
-
2009
- 2009-05-27 CN CN200920025974XU patent/CN201443698U/en not_active Expired - Lifetime
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102734646A (en) * | 2011-04-01 | 2012-10-17 | 上海广茂达光艺科技股份有限公司 | LED downlight |
| CN102734715A (en) * | 2011-04-01 | 2012-10-17 | 上海广茂达光艺科技股份有限公司 | Led ceiling lamp |
| CN103493226A (en) * | 2011-04-22 | 2014-01-01 | 株式会社东芝 | White light source and white light source system using same |
| CN102980062A (en) * | 2012-11-12 | 2013-03-20 | 广东威创视讯科技股份有限公司 | Light emitting diode (LED) light source |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101561083B (en) | LED light-emitting device with variable color temperature and implementation method thereof | |
| CN202364449U (en) | LED street lamp capable of achieving automatic color temperature regulation according to external temperature | |
| CN104115564B (en) | serial lighting interface with embedded feedback | |
| CN104540263A (en) | Method and device for simulating daylight changing | |
| CN204046868U (en) | A kind of lighting device | |
| CN201995188U (en) | LED (light-emitting diode) film and television lamp with adjustable color temperature and brightness | |
| CN102141210A (en) | High color rendering index and high-brightness light lighting equipment and method for realizing multi color temperature regulation | |
| CN102858056A (en) | Brightness and color temperature controlling system for LED (light-emitting diode) lamp | |
| CN201443698U (en) | LED light-emitting device with changeable color temperature | |
| CN104347034A (en) | Double-power LED (light-emitting diode) display screen drive circuit | |
| CN106658873A (en) | Nonlinear closed loop-based LED control system with adjustable light colors | |
| CN202721868U (en) | LED lamp brightness and color temperature control system | |
| CN101482232A (en) | Color temperature-adjustable LED lamp and its color temperature adjusting method | |
| CN105228319A (en) | LED color adjusting device, system and method | |
| CN103079305B (en) | Light-emitting diode (LED) illuminating device and light regulation method thereof | |
| CN104913224A (en) | LED light source and LED lamp | |
| CN201995168U (en) | Light emitting diode (LED) spot light capable of automatically regulating color temperature | |
| CN204962375U (en) | LED light source and LED lamp | |
| CN102355779A (en) | LED plant growth lamp simulation daylight control system | |
| CN109461725A (en) | Multi color temperature LED light source, lamp and preparation method | |
| CN101742785A (en) | Intelligent dimming three-primary-color LED street lamp controller | |
| CN209357723U (en) | Multi color temperature LED light source, lamp | |
| CN103945588A (en) | Method for uniformly dimming large-area OLED (Organic Light Emitting Diode) module | |
| CN204518950U (en) | A kind of solar LED trapping lamp of adjustable optical wavelength | |
| CN202172510U (en) | Multi-channel LED (light-emitting diode) controlling and driving system |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20100428 Effective date of abandoning: 20090527 |