CN202634787U - LED light fixture with sectional color-temperature adjustment - Google Patents
LED light fixture with sectional color-temperature adjustment Download PDFInfo
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- CN202634787U CN202634787U CN 201220194247 CN201220194247U CN202634787U CN 202634787 U CN202634787 U CN 202634787U CN 201220194247 CN201220194247 CN 201220194247 CN 201220194247 U CN201220194247 U CN 201220194247U CN 202634787 U CN202634787 U CN 202634787U
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- led lamp
- light fixture
- control circuit
- led light
- led
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Abstract
The utility model discloses an LED light fixture with sectional color-temperature adjustment. The LED light fixture comprises a rectification circuit, a constant current source, LED lamp beads, and a control circuit, wherein the rectification circuit provides dc power supply for the control circuit, the constant current source provides constant current power supply for the LED lamp beads, and the control circuit controls connection and disconnection of circuits of the LED lamp beads. The control circuit is used to control connection and disconnection of circuits of two groups of LED lamp beads in a sectional manner, thereby adjusting the color temperature of the LED light fixture so that the LED light fixture can adapt to different application environments, and achieving the goals of low cost and simple operation; and in the control circuit, a digital section switch is used to control connection and disconnection of a triode, thereby controlling the circuits of the LED lamp beads so that the structure of the circuits is compact.
Description
Technical field
The utility model relates to lighting field, particularly, relates to a kind of LED light fixture of sectional-regulated colour temperature.
Background technology
Compare conventional light source because of the LED illumination, have advantages such as energy-saving and environmental protection, extra long life, the LED technology is widely used in lighting field; Like series such as the shot-light (Ceiling light) of room lighting, Down lamp, ceiling light, daylight Frame lamps; But because lighting environment and season are different, required luminous environment is different, and existing partial L ED illumination can be regulated fixture color; But, regulate complicated because adjustable range is big; And adopt block switch to realize the LED lamp of variable color, and owing to adopt many drive controlling, volume is big, cost is bigger.
The utility model content
The purpose of the utility model is, to the problems referred to above, proposes a kind of LED light fixture of sectional-regulated colour temperature, advantage with low cost to realize, simple to operate.
For realizing above-mentioned purpose, the technical scheme that the utility model adopts is:
A kind of LED light fixture of sectional-regulated colour temperature; Comprise rectification circuit, constant-current source, LED lamp pearl and control circuit; Said rectification circuit is that control circuit provides DC power supply; Said constant-current source is that LED lamp pearl group provides constant-current supply, and said control circuit is controlled the conducting of LED lamp pearl current circuit and ended.
Further, said control circuit comprises digital block switch, photoelectricity coupling and triode, is of coupled connections through photoelectricity between said digital block switch and the triode.
Further, said triode is connected among two groups of LED lamp pearl current circuits.
Further, said LED lamp pearl is two groups, this two groups of LED lamp pearls parallel connection or be connected in series.
Further, said digital block switch adopts IC2608.
The technical scheme of the utility model; The segmentation of employing control circuit is controlled the conducting of two groups of LED lamp pearl current circuits or is ended, and adjusts the colour temperature of LED light fixture, thereby makes the LED light fixture adapt to different application environments; Thereby realized purpose with low cost, simple to operate.Control circuit adopts the conducting of digital block switch control triode and ends the work of controlling LED lamp pearl group, thereby makes the compact conformation of circuit.
Further feature of the utility model and advantage will be set forth in specification subsequently, and, partly from specification, become obvious, perhaps understand through implementing the utility model.The purpose of the utility model can realize through the structure that in the specification of being write, claims and accompanying drawing, is particularly pointed out and obtain with other advantages.
Through accompanying drawing and embodiment, the technical scheme of the utility model is done further detailed description below.
Description of drawings
Accompanying drawing is used to provide the further understanding to the utility model, and constitutes the part of specification, is used to explain the utility model with the embodiment of the utility model, does not constitute the restriction to the utility model.In the accompanying drawings:
Fig. 1 implements the LED light fixture electrical circuit diagram of a described sectional-regulated colour temperature for the utility model embodiment;
Fig. 2 implements the LED light fixture electrical circuit diagram of two described sectional-regulated colour temperatures for the utility model embodiment.
In conjunction with accompanying drawing, Reference numeral is following among the utility model embodiment:
First group of LED lamp of 1-pearl; Second group of LED lamp of 2-pearl.
Embodiment
Describe below in conjunction with the preferred embodiment of accompanying drawing, should be appreciated that preferred embodiment described herein only is used for explanation and explains the utility model, and be not used in qualification the utility model the utility model.
Embodiment one:
As shown in Figure 1; The LED light fixture of sectional-regulated colour temperature; Comprise rectification circuit, constant-current source, two groups of LED lamp pearls and control circuit, rectification circuit is that control circuit provides DC power supply, and constant-current source is that two groups of LED lamp pearls provide constant-current supply; Control circuit is controlled the conducting of two groups of LED lamp pearl current circuits and is ended; Control circuit comprises digital block switch, photoelectricity coupling and triode, is of coupled connections through photoelectricity between digital block switch and the triode, and triode is connected in the LED lamp pearl group current circuit.LED lamp pearl group is connected in parallel, and digital block switch adopts the IC2608 chip.
Resistance R 1, capacitor C 1 are formed block switch resistance-capacitance depressurization circuit; Rectifier bridge B01, capacitor C 2, resistance R 3, resistance R 2, voltage stabilizing didoe ZD1 form the power circuit of block switch, and resistance R 2 is the discharge resistance of capacitor C 2, and the shortest time of decision continued operation on-off effect action at interval; Resistance R 4, capacitor C 3 provide switching signal for block switch; The longest effective time of resistance R 5, capacitor C 5 decision continued operation mains switches, U1 was digital block switch IC2608 at interval, and U2, U3 are optical coupled switch; Play the effect of isolating the constant-current source output power supply, triode Q1, triode Q2 control the operating current of two paths of LED lamp pearl group respectively.
When turning on the power switch for the first time, 2 pin of digital block switch U1 are low level, cause triode Q1 conducting, first group of LED lamp pearl work; When the operating power switch second time (accomplishing the on/off action in the setting-up time), 2 pin of digital block switch U1 are high level, and 8 pin are low level, and triode Q1 breaks off; Triode Q2 conducting, second group of work of LED lamp pearl, operating power switch for the third time; Triode Q1, triode Q2 conducting simultaneously, two groups of LED lamp pearls are worked simultaneously, because this moment, two groups of LED lamp pearls were connected in parallel; The constant-current source output current is constant current, and the work total current of two groups of LED lamp pearls is constant, and gross power is constant.
First group of LED lamp pearl used positive white light pearl or warm white lamp pearl; Second group of LED lamp pearl used warm white lamp pearl or positive white light pearl; Any one group of lamp pearl group is sent the light of corresponding colour temperature when working independently, when two groups of lamp pearl groups are worked simultaneously, will send neutral light; Realize 3 kinds of colour temperatures of random sectional-regulated light fixture, in different seasonal and illumination occasion, easily change lighting environment.
Embodiment two:
As shown in Figure 1, the LED light fixture of sectional-regulated colour temperature comprises rectification circuit, constant-current source, LED lamp pearl and control circuit; Rectification circuit is that control circuit provides DC power supply; Constant-current source is that two groups of LED lamp pearls provide constant-current supply, and control circuit is controlled the conducting of two groups of LED lamp pearl current circuits and ended, and control circuit comprises digital block switch, photoelectricity coupling and triode; Be of coupled connections through photoelectricity between digital block switch and the triode, three utmost points are connected in the LED lamp pearl group current circuit.LED lamp pearl group is connected in series, and digital block switch adopts the IC2608 chip.
Use is connected in series with color temperature lamp pearl group, when triode Q1 conducting, and first group of LED lamp pearl work; Light fixture is low-light level, when triode Q1 breaks off triode Q2 conducting; First group of LED lamp pearl and second group of LED lamp pearl are all worked, because the constant-current source output current is constant, when first group of LED lamp pearl work; Operating voltage is by automatic clamping, and constant-current source is output as low-power, plays province's electro ultrafiltration simultaneously at the change brightness of illumination.
What should explain at last is: the above is merely the preferred embodiment of the utility model; Be not limited to the utility model; Although the utility model has been carried out detailed explanation with reference to previous embodiment; For a person skilled in the art, it still can be made amendment to the technical scheme that aforementioned each embodiment put down in writing, and perhaps part technical characterictic wherein is equal to replacement.All within the spirit and principle of the utility model, any modification of being done, be equal to replacement, improvement etc., all should be included within the protection range of the utility model.
Claims (5)
1. the LED light fixture of a sectional-regulated colour temperature; It is characterized in that; Comprise rectification circuit, constant-current source, LED lamp pearl and control circuit; Said rectification circuit is that control circuit provides DC power supply, and said constant-current source is that LED lamp pearl group provides constant-current supply, and said control circuit is controlled the conducting of LED circuit for lamp and ended.
2. the LED light fixture of sectional-regulated colour temperature according to claim 1 is characterized in that, said control circuit comprises digital block switch, photoelectricity coupling and triode, is of coupled connections through photoelectricity between said digital block switch and the triode.
3. the LED light fixture of sectional-regulated colour temperature according to claim 2 is characterized in that, said triode is connected in the LED lamp pearl group current circuit.
4. according to the LED light fixture of claim 1,2 or 3 described sectional-regulated colour temperatures, it is characterized in that said LED lamp pearl is two groups, this two groups of LED lamp pearls parallel connection or be connected in series.
5. the LED light fixture of sectional-regulated colour temperature according to claim 4 is characterized in that, said digital block switch adopts IC2608.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220194247 CN202634787U (en) | 2012-04-28 | 2012-04-28 | LED light fixture with sectional color-temperature adjustment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220194247 CN202634787U (en) | 2012-04-28 | 2012-04-28 | LED light fixture with sectional color-temperature adjustment |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202634787U true CN202634787U (en) | 2012-12-26 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220194247 Expired - Fee Related CN202634787U (en) | 2012-04-28 | 2012-04-28 | LED light fixture with sectional color-temperature adjustment |
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| CN (1) | CN202634787U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103486500A (en) * | 2013-09-23 | 2014-01-01 | 中山市民光照明科技有限公司 | Light-emitting diode (LED) fluorescent tube support lamp capable of changing color temperature |
| CN106304502A (en) * | 2016-09-28 | 2017-01-04 | 东莞铭普光磁股份有限公司 | The power control circuit of a kind of illuminator and system |
| CN106937445A (en) * | 2017-03-30 | 2017-07-07 | 新和（绍兴）绿色照明有限公司 | One kind switch multistage linear constant-current dimming LED |
-
2012
- 2012-04-28 CN CN 201220194247 patent/CN202634787U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103486500A (en) * | 2013-09-23 | 2014-01-01 | 中山市民光照明科技有限公司 | Light-emitting diode (LED) fluorescent tube support lamp capable of changing color temperature |
| CN106304502A (en) * | 2016-09-28 | 2017-01-04 | 东莞铭普光磁股份有限公司 | The power control circuit of a kind of illuminator and system |
| CN106937445A (en) * | 2017-03-30 | 2017-07-07 | 新和（绍兴）绿色照明有限公司 | One kind switch multistage linear constant-current dimming LED |
| CN106937445B (en) * | 2017-03-30 | 2018-07-10 | 新和（绍兴）绿色照明有限公司 | A kind of switch multistage linear constant-current dimming LED light |
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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 |
Granted publication date: 20121226 Termination date: 20150428 |
|
| EXPY | Termination of patent right or utility model |