CN204425717U - A kind of LED illumination System of the adjustable color based on ambient temperature - Google Patents
A kind of LED illumination System of the adjustable color based on ambient temperature Download PDFInfo
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- CN204425717U CN204425717U CN201520025096.7U CN201520025096U CN204425717U CN 204425717 U CN204425717 U CN 204425717U CN 201520025096 U CN201520025096 U CN 201520025096U CN 204425717 U CN204425717 U CN 204425717U
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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 relates to a kind of LED illumination System of the adjustable color based on ambient temperature, utilize temperature feedback signal to external world, carry out illumination colour temperature to regulate, warm up optical illumination to reach at low temperature environment, the lighting solutions of the automatic colour temperature adjustment of hot environment cold light illumination.Native system comprises the LED drive power unit be made up of high PF value constant pressure source and the adjustable constant-current source 1 of output current and constant-current source 2, one by ambient temperature signal feedback to the temperature detecting unit of LED drive power, temperature signal converting unit feedback temperature signal being converted to LED drive power regulation output electric current, the LED cold light source of a high color rendering index (CRI) and one are used for regulating the LED of colour temperature to warm up light source.Utilize this function of LED drive power simultaneously, by the temperature feedback of lamp interior to driving power, when lamp interior temperature exceedes design temperature, output current can also be reduced, to protect the safety of LED, ensure that the useful life of light fixture reaches designing requirement.
Description
Technical field
The utility model relates to a kind of LED illumination System, specifically the self-adjustable Novel LED illuminating system of a kind of illumination colour temperature based on ambient temperature.
Background technology
Light-emitting diode (Light-Emitting Diode, be called for short LED) the solid luminescent semiconductor electronic component of to be a kind of can be by electric energy conversion luminous energy, its power consumption is low, long service life (100,000 hours can be reached), and environmental protection, volume is little, heating is few, brightness is high, is easy to light modulation, is the energy-conserving and environment-protective light source of a new generation.
Colour temperature is the index representing that light source light spectrum quality is the most general, is the yardstick representing that light source is photochromic.It defines by absolute black body, and the radiation of absolute black body is with light source when the radiation of visual field is identical, and now the temperature of black matrix just claims the colour temperature of this light source.Colour temperature represents with Kelvin's absolute temperature (K) usually.Because the light that most of lighting source sends is commonly referred to as white light, therefore the color table temperature of light source or correlated colour temperature are namely in order to censure the degree of its photochromic phase dialogue, to quantize the photochromic performance of light source.The feature of low color temperature light sources is in Energy distribution, and red radiation relative scale is higher, and after colour temperature improves, in Energy distribution, the ratio of blue radiation increases; In other words, be exactly photochromic blue, colour temperature is higher; Partially red then colour temperature is lower.Therefore, light source color temperature is different, photochromic also different, and colour temperature, at below 3300K, photochromicly partially redly gives warm sensation; Colour temperature is between 3000 ~ 6000K, and people without obvious especially visual psychology effect, has frank sensation under this tone; Colour temperature is more than 6000K, photochromic partially blue, gives chilly sensation.
Current colour temperature regulates on the display system multiplex, and in illuminator, usual used be all fixing colour temperature system, but, in our life of reality, due to the different ambient temperatures in the four seasons, cause us under different ambient temperature, if adopt the illuminator of fixing colour temperature, such as adopt cold light source illumination, give the sensation of people's cold in the winter time, although meet illumination requirement, can give people strong discomfort.Along with improving constantly of people's living standard, the requirement of people to LED illumination System is also more and more higher, and require that illuminator can with the change of ambient temperature, its colour temperature also ensues change, to meet the comfort of human body.
Summary of the invention
The utility model is just for the technical problem existed in prior art, a kind of LED illumination System of the adjustable color based on ambient temperature is provided, this system can the colour temperature of environmentally cold, the warm light source bright dipping of temperature automatic adjustment LED, when ambient temperature is lower, illuminator sends low colour temperature, warm-toned light; And when ambient temperature is higher, then send the light of high color temperature, cool tone, farthest meet people's comfort level demand to external world.
To achieve these goals, the technical solution adopted in the utility model is, a kind of LED illumination System of the adjustable color based on ambient temperature, comprise high PF value (power factor) constant pressure source, constant-current source 1 that output current is adjustable, constant-current source 2 that output current is adjustable, temperature detecting unit, temperature signal converting unit, the LED cold light source of high color rendering index (CRI) and LED and warm up light source, described LED cold light source is the principal light source of illuminator, described LED warms up the secondary light source that light source is illuminator, plays the effect regulating colour temperature; The AC voltage transitions of input is the DC voltage meeting system requirements by described high PF value constant pressure source, and the constant-current source 1 that the output current for rear class is adjustable and the adjustable constant-current source 2 of output current provide input energy; Described temperature detecting unit is used for ambient temperature and LED is cold, warm light source internal temperature detects to external world, and temperature signal is converted to sampled signal and is sent to described temperature signal converting unit; The sampled signal received is converted to dim signal and transfers to the adjustable constant-current source of output current 1 and the adjustable constant-current source 2 of output current respectively by described temperature signal converting unit; The constant-current source 1 that described output current is adjustable and the adjustable constant-current source 2 of output current regulate the output current of constant-current source according to the dim signal received, and realize regulating LED cold light source and LED to warm up the operating current of light source.
Improve as one of the present utility model, described high PF value constant pressure source is in input AC voltage gamut, and its PF value is not less than 0.9, thus reduces the reactive power in electric power system, improves the utilance of network system.
Improve as one of the present utility model, the pattern that described temperature signal converting unit exports dim signal is at least one in PWM, 0 ~ 10V and adjustable resistance Three models.The sampled signal delivering to described temperature signal converting unit from described temperature detecting unit through conversion become constant-current source can dim signal, for regulating the output current of constant-current source, such that constant-current source output current and ambient temperature are corresponding within the specific limits to change; Simultaneously according to the sampled signal of LED lamp internal temperature, the operating current of light fixture is controlled, prevents light fixture overheated, cause light fixture to damage.
Improve as one of the present utility model, described temperature detecting unit adopt accurate thermoelectricity occasionally the temperature element such as thermistor as detector unit, and the temperature signal that detector unit detects is transmitted by lead-in wire or wireless mode, and accurately, being reliably converted to by temperature signal can for the sampled signal of described temperature signal converting unit reference, its switching signal precision is not less than ± and 1 degree.Temperature signal herein comprises light fixture ambient temperature signal and lamp interior temperature signal.
Improve as one of the present utility model, the output current of the constant-current source 1 that described output current is adjustable and the adjustable constant-current source 2 of output current can regulate between 100% ~ 5%, and without stroboscopic, lower than 5% time turn off output current.
Improve as one of the present utility model, described LED cold light source select spectrum between 3300-10000K and color rendering index be not less than 90 cold light source, the ratio that its luminous flux accounts for total light flux in whole illuminator is not less than 70%, ensures that the illumination when using cold light source to throw light on completely reaches requirement.
Improve as one of the present utility model, described LED warms up the red spectrum that light source selects spectrum to be not more than 3300K and warms up light source, in whole illuminator, its luminous flux accounts for the ratio of total light flux not higher than 30%, avoid illumination when complete warm color illumination to exceed requirement.
The utility model achieves the colour temperature automatically regulating LED illumination System bright dipping according to ambient temperature, and when ambient temperature lower (system default be body sense comfort temperature 26 DEG C lower than people), illuminator sends low colour temperature, warm-toned light; And when ambient temperature higher (system default be body sense comfort temperature 26 DEG C higher than people), then send the light of high color temperature, cool tone, farthest meet people's comfort level demand to external world; Meanwhile; also by detecting LED lamp internal temperature, and regulating according to the operating current of this temperature to light fixture, playing the effect of protection light fixture; avoid light fixture because of internal temperature too high, cause lamp life decline even damage and affect normal use.The advantages such as the utility model has that structure is simple, easy to use, energy-conserving and environment-protective, safe and reliable, long service life, in addition, this LED illumination System can also regulate colour temperature according to the demand of user.
Accompanying drawing explanation
Fig. 1 is system architecture diagram of the present utility model.
Fig. 2 is the LED cold light source Drive and Control Circuit of the utility model one embodiment.
Fig. 3 is that the LED of the utility model one embodiment warms up light source Drive and Control Circuit.
Embodiment
In order to deepen understanding and cognition of the present utility model, below in conjunction with accompanying drawing the utility model be further described and introduce.
As shown in Figure 1, a kind of LED illumination System of the adjustable color based on ambient temperature, when extraneous variations in temperature, the colour temperature of illuminator changes thereupon, usually with 26 degrees Celsius for boundary, lower than 26 degrees Celsius, add LED and warm up color temperature light sources, along with the progressively decline of temperature, when arriving 10 degrees Celsius, LED warms up color temperature light sources and reaches nominal output light flux; Then adopt the illumination of LED cold light source completely higher than 26 degrees Celsius, make people to external world feel pleasant.This system comprises high PF value constant pressure source, constant-current source 1 that output current is adjustable, constant-current source 2 that output current is adjustable, temperature detecting unit, temperature signal converting unit, the LED cold light source of high color rendering index (CRI) and LED and warms up light source.
Described LED cold light source, as the principal light source of illuminator, provides the luminous flux of more than 70%, ensures enough illumination requirement, only when the temperature of lamp interior is higher than system set point temperature, just illumination can be reduced, to reduce the temperature of LED light source, ensure that light fixture can trouble free service.Normally when lamp interior temperature is higher than 60 degrees Celsius, start the operating current of LED cold light source to reduce, time lamp interior temperature reaches 80 degree, turn off the operating current of LED cold light source completely.
Described LED warms up the secondary light source that light source is illuminator, plays the effect regulating colour temperature; Carry out fine adjustment by the output current of the adjustable constant-current source 2 of described output current, and in the temperature range of default, the colour temperature of illuminator is accurately regulated, reach comfortable lighting requirement.
The AC voltage transitions of input is the DC constant voltage signal that applicable rear class uses by described high PF value constant pressure source, and this constant pressure source is in input AC voltage gamut, and PF value is not less than 0.9, usually requires that electromagnetic radiation meets FCC requirement, and other electrical equipment can not be disturbed normally to use.
DC constant voltage signal sends into the adjustable constant-current source 1 and 2 of output current, and the output current of constant-current source 1 and 2 can be regulated by multi-signal mode, its acceptable conditioning signal comprises: pwm signal, 0-10V signal, adjustable resistance signal etc., constant-current source 1 and 2 receives this kind of conditioning signal, according to default requirement, between 100%--5%, corresponding adjustment is carried out to output current, to reach the requirement regulating light source (LED cold light source and LED warm up light source) luminous flux, and when its output current lower than 5% time, implement the shutoff to output current.
Described temperature detecting unit can adopt accurate thermoelectricity occasionally thermistor ambient temperature and LED is cold, warm light source internal temperature detects to external world, and by lead-in wire or the mode of wireless transmission by test signal be passed back, and corresponding temperature signal will be obtained thus be converted to sampled signal and send described temperature signal converting unit to and use; Foundation as regulating colour temperature is used for the test of light fixture ambient temperature, and the test to lamp interior temperature, then for the foundation as adjustment light fixture operating current, to ensure that light fixture normally works, can not occur because ambient temperature is too high, cause lamp interior temperature too high, cause lamp life to decline, affect the problem that light fixture normally uses.
The sampled signal received processes by described temperature signal converting unit, is converted to the acceptable dimming control signal of constant-current source 1 and 2, to control the output current of constant-current source 1 and 2.For the adjustment of colour temperature, system default be that this temperature line of demarcation can regulate according to the demand of user with the body sense comfort temperature 26 DEG C of people for line of demarcation.When ambient temperature reaches 26 degrees Celsius time, the operating current that LED warms up light source reaches about 40% of setting operating current; Higher than this temperature, progressively reduce the operating current that LED warms up light source, in 30 degrees Celsius, turn off the electric current that LED warms up light source completely; Time lower than 26 degrees Celsius, progressively increase LED and warm up the operating current of light source, when ambient temperature reaches 15 degrees Celsius time, LED warm up that light source works electric current reaches setting operating current 100%.
As shown in Figures 2 and 3, thermistor is adopted to complete temperature test work in the present embodiment, for reducing the interference of outer bound pair signal, connect the external connection employing shielding conductor of thermistor to Drive and Control Circuit, to reduce interference to greatest extent, reduce the requirement to operational environment, the requirement of long distance wiring can also be met simultaneously.
In LED cold light source Drive and Control Circuit, thermistor 1 one end of sampling light fixture internal temperature is connected to CT1.DIM end, its other end is connected on the earth potential end of Drive and Control Circuit, the linear resistance region of variation of thermistor 1 can in temperature in the interval of 65 ~ 80 degrees Celsius, constant-current source 1 output current is reduced to 30% by 100%, like this when temperature is more than 65 degrees Celsius, LED cold light source Drive and Control Circuit will start to reduce the electric current flow through on LED cold light source, to reduce the heating of LED cold light source self, when temperature reaches 80 degrees Celsius time, the electric current flowing through LED cold light source is reduced to 30% of normal current, play the effect of protection light fixture.In addition; the thermistor 2 of sampling light fixture internal temperature is directly connected to R1 two ends, the compensating resistance of R1 thermistor for this reason, thermistor 2 reaches when 82 degree in temperature; turn off constant-current source 1 circuit to the operating current of LED cold light source, to reach the requirement of protection light fixture.
Warm up in light source Drive and Control Circuit at LED, thermistor 3 one end of sampling ambient temperature is connected to CT2.DIM end, its other end is connected with the earth potential end of Drive and Control Circuit, thermistor 3 can in ambient temperature in 10 degrees Celsius to 24 degrees Celsius, and the output current making LED warm up light source driving circuit is reduced to 40% by 100%; When ambient temperature at 24 degrees Celsius to 31 degrees Celsius time, the output current making LED warm up light source driving circuit is reduced to 10% by 40%.R53 is compensating resistance, compensates the nonlinear change due to variations in temperature and thermistor 3.In addition, the thermistor 4 of test ambient temperature is connected to R34 two ends, the compensating resistance of R34 thermistor for this reason, thermistor 4 reaches when 32 degree in temperature, turns off constant-current source 2 circuit warms up light source operating current to LED.Now completely thrown light on by LED cold light source, ambient temperature has reached the degree that ordinary people feels hotter.
It should be noted that above-described embodiment, be not used for limiting protection range of the present utility model, equivalents done on the basis of technique scheme or the alternative scope all falling into the utility model claim and protect.In the claims, word " comprises " and does not get rid of existence and do not arrange element in the claims.Unaccomplished matter in the utility model, belongs to the common practise of those skilled in the art.
Claims (7)
1. the LED illumination System based on the adjustable color of ambient temperature, it is characterized in that: comprise high PF value constant pressure source, constant-current source 1 that output current is adjustable, constant-current source 2 that output current is adjustable, temperature detecting unit, temperature signal converting unit, the LED cold light source of high color rendering index (CRI) and LED and warm up light source, described LED cold light source is the principal light source of illuminator, described LED warms up the secondary light source that light source is illuminator, plays the effect regulating colour temperature; The AC voltage transitions of input is the DC voltage meeting system requirements by described high PF value constant pressure source, and the constant-current source 1 that the output current for rear class is adjustable and the adjustable constant-current source 2 of output current provide input energy; Described temperature detecting unit is used for ambient temperature and LED is cold, warm light source internal temperature detects to external world, and temperature signal is converted to sampled signal and is sent to described temperature signal converting unit; The sampled signal received is converted to dim signal and transfers to the adjustable constant-current source of output current 1 and the adjustable constant-current source 2 of output current respectively by described temperature signal converting unit; The constant-current source 1 that described output current is adjustable and the adjustable constant-current source 2 of output current regulate the output current of constant-current source according to the dim signal received, and realize regulating LED cold light source and LED to warm up the operating current of light source.
2. the LED illumination System of a kind of adjustable color based on ambient temperature as claimed in claim 1, it is characterized in that, described high PF value constant pressure source is in the gamut of input voltage, and its PF value is not less than 0.9.
3. the LED illumination System of a kind of adjustable color based on ambient temperature as claimed in claim 1, is characterized in that, the pattern that described temperature signal converting unit exports dim signal is at least one in PWM, 0 ~ 10V and adjustable resistance Three models.
4. the LED illumination System of a kind of adjustable color based on ambient temperature as described in claim 1 or 3, it is characterized in that, described temperature detecting unit adopts temperature element as detector unit, and the temperature signal that detects of detector unit institute is by go between or wireless mode transmits.
5. the LED illumination System of a kind of adjustable color based on ambient temperature as claimed in claim 1 or 2, it is characterized in that, the output current of the constant-current source 1 that described output current is adjustable and the adjustable constant-current source 2 of output current can regulate between 100% ~ 5%, and without stroboscopic, lower than 5% time turn off output current.
6. the LED illumination System of a kind of adjustable color based on ambient temperature as claimed in claim 1, it is characterized in that, described LED cold light source usually select spectrum between 3300-10000K and color rendering index be not less than 90 cold light source, the ratio that its luminous flux accounts for total light flux in whole illuminator is not less than 70%.
7. the LED illumination System of a kind of adjustable color based on ambient temperature as claimed in claim 1, it is characterized in that, described LED warms up the red spectrum that light source selects spectrum to be not more than 3300K usually and warms up light source, and in whole illuminator, its luminous flux accounts for the ratio of total light flux not higher than 30%.
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| CN201520025096.7U CN204425717U (en) | 2015-01-15 | 2015-01-15 | A kind of LED illumination System of the adjustable color based on ambient temperature |
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| CN201520025096.7U CN204425717U (en) | 2015-01-15 | 2015-01-15 | A kind of LED illumination System of the adjustable color based on ambient temperature |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104602412A (en) * | 2015-01-15 | 2015-05-06 | 张家港麦智电子科技有限公司 | Environmental temperature based variable color temperature LED lighting system |
| CN105491761A (en) * | 2015-12-29 | 2016-04-13 | 生迪智慧科技有限公司 | LED lamp capable of adjusting color temperature and color temperature adjustment method for LED lamp |
| CN108012391A (en) * | 2017-11-24 | 2018-05-08 | 卫星电子（中山）有限公司 | A kind of headlamp by temperature control colour temperature |
-
2015
- 2015-01-15 CN CN201520025096.7U patent/CN204425717U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104602412A (en) * | 2015-01-15 | 2015-05-06 | 张家港麦智电子科技有限公司 | Environmental temperature based variable color temperature LED lighting system |
| CN105491761A (en) * | 2015-12-29 | 2016-04-13 | 生迪智慧科技有限公司 | LED lamp capable of adjusting color temperature and color temperature adjustment method for LED lamp |
| CN105491761B (en) * | 2015-12-29 | 2018-08-14 | 生迪智慧科技有限公司 | The LED light of adjustable color temperature and the color temperature adjusting method of LED light |
| CN108012391A (en) * | 2017-11-24 | 2018-05-08 | 卫星电子（中山）有限公司 | A kind of headlamp by temperature control colour temperature |
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Effective date of registration: 20200213 Address after: 201906 No.159, Fulian 1st Road, Gucun Industrial Park, Baoshan District, Shanghai Patentee after: Maiwang lighting appliances (Shanghai) Co., Ltd Address before: 204 D building, No. 1 Cathay Pacific Road, Zhangjiagang, Jiangsu, Suzhou 215600, China Patentee before: ZHANGJIAGANG MAIZHI ELECTRONIC SCIENCE & TECHNOLOGY CO., LTD. |