CN201515523U - Driving device of light-emitting diode LED - Google Patents
Driving device of light-emitting diode LED Download PDFInfo
- Publication number
- CN201515523U CN201515523U CN2009200333339U CN200920033333U CN201515523U CN 201515523 U CN201515523 U CN 201515523U CN 2009200333339 U CN2009200333339 U CN 2009200333339U CN 200920033333 U CN200920033333 U CN 200920033333U CN 201515523 U CN201515523 U CN 201515523U
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- led
- control circuit
- light
- emitting diode
- diode led
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Abstract
The utility model belongs to the technical field of diodes, and relates to a driving device of a light-emitting diode LED, which comprises a DC/DC or AC/DC control circuit, a light-emitting diode LED array, a switch array and an LED driving control circuit, wherein one end of the light-emitting diode LED array is connected with the DC/DC or AC/DC control circuit and each LED array branch at the other end is connected with a switch; the switch array formed by a plurality of switches is connected to the light-emitting diode LED driving control circuit; and the output end of the light-emitting diode LED driving control circuit is connected with the DC/DC or AC/DC control circuit which is connected with a power supply. The driving device of the light-emitting diode LED has simple structure, can provide driving for a certain light-emitting diode LED branch at some instant, thus conducting sectionalized lighting so as to reduce the instantaneous current in the circuit and reduce the electromagnetic interference.
Description
Technical field
The utility model belongs to the diode technologies field, relates to a kind of LED drive unit.
Background technology
LED (Light Emitting Diode) is a kind of solid-state semiconductor device, and it can directly be converted into light to electricity, owing to possess high illumination efficiency, long-lasting and small size, LED has obtained application more and more widely.The white light LEDs of the low-power consumption of about 0.1W just is being widely used on the backlight and keyboard illumination of light-emitting diode LCD display floater at present, also can bring higher brightness as application such as temporary lighting or photoflash lamps by connecting many LEDs certainly.The High Power LED LED of 1W then is applied in camera function or the home-use illumination of supporting in the high-resolution shooting mobile phone in the dark surrounds.Except that white light LEDs, RGB (red, green, blue) light LED also often is used to strengthen color sense, and accurately suitably mixed by three kinds of colors, RGB (red, green, blue) light LED can create rich and varied color.
The application of LED more and more widely, simultaneously the type of drive of LED is also more and more abundanter.In order to reach higher brightness, LED is used by series connection and in parallel the mixing usually.But increasing of the connection in series-parallel number of LED can cause the power output of its power supply to be multiplied, and can cause very strong electromagnetic interference.
Summary of the invention
Transient current is excessive in the circuit that causes at traditional LED type of drive, and the shortcoming that electromagnetic interference is apparent in view the utility model proposes following technical scheme:
A kind of drive unit of LED, comprise: DC/DC or AC/DC control circuit, the LED array, switch arrays, the LED Drive and Control Circuit, one end of LED array connects DC/DC or AC/DC control circuit, the led array branch road of the other end respectively connects a switch, the switch arrays 3 that a plurality of switches constitute are connected to the LED Drive and Control Circuit, the output of LED Drive and Control Circuit connects DC/DC or AC/DC control circuit, and DC/DC or AC/DC control circuit connect power supply.
Described LED array is made of one group of led array branch road.
Described LED array 2 has many group led array branch roads formation in parallel.
Described switch arrays 3 have at least a switch to constitute.
Described switch arrays 3 are made of a plurality of switches.
The drive unit of the utility model LED, simple in structure, can only provide driving in a flash at certain to a certain LED branch road, light thereby carry out segmentation, to reduce the transient current in the circuit, reduce electromagnetic interference.
Description of drawings
Fig. 1 the utility model LED drive unit theory diagram;
The course of work schematic diagram of Fig. 2 the utility model switch arrays;
Electric current changes schematic diagram in Fig. 3 the utility model circuit.
Embodiment
Come the present invention is done further detailed explanation below in conjunction with accompanying drawing:
The drive unit of the utility model LED adopts the LED Drive and Control Circuit, order according to the LED array, cooperating between control AC/DC or DC/DC circuit and the switch arrays, make LED branch road in the LED array, at one time, have only a certain branch road to open, realized transient current in the minimizing circuit, optimize circuit structure.
As shown in Figure 1, a kind of drive unit of LED, comprise: DC/DC or AC/DC control circuit 1, LED array 2, constitute by a plurality of led array branch roads, LED Drive and Control Circuit 4, LED Drive and Control Circuit 4 realizes control to LED array 2 by the device of CPU or tool computing function, one end of led array 2 connects DC/DC or AC/DC control circuit 1, the led array branch road of the other end respectively connects a switch, the switch arrays 3 that a plurality of switches constitute are connected to LED Drive and Control Circuit 4, the control signal that CPU sends connects DC/DC or AC/DC control circuit 1 by the output of LED Drive and Control Circuit 4, and DC/DC or AC/DC control circuit 1 connect power supply.
As shown in Figure 2, switch arrays have only one the tunnel to open at one time, and a plurality of switch is open-minded successively according to the order of time.Switch 1, switch 2 ... switch n, the time length of opening are determined by demand, might not be same.
As shown in Figure 3, the dotted portion among the figure is the electric current situation of change in the drive circuit of LED generally; Solid line among Fig. 3 partly is under the control of the switch arrays of last Fig. 2, and the electric current in the circuit changes.As can be seen, under the control of switch arrays 3, the electric current crest in the circuit obviously reduces, and therefore can effectively reduce the electromagnetic interference of circuit.
LED branch road of the present utility model light order and only just explanation of time, and other branch road quantity with light order or the like and different numerical value can occur, and all these variations are all in claim scope of the present utility model.
Claims (4)
1. the drive unit of a LED, comprise: DC/DC or AC/DC control circuit (1), LED array (2), switch arrays (3), LED Drive and Control Circuit (4), it is characterized in that: an end of LED array (2) connects DC/DC or AC/DC control circuit (1), the other end is connected to LED Drive and Control Circuit (4) by the switches set of switch arrays (3), the output of LED Drive and Control Circuit (4) connects DC/DC or AC/DC control circuit (1), and DC/DC or AC/DC control circuit (1) connect power supply.
2. the drive unit of LED according to claim 1, it is characterized in that: described led array (2) is made of one group of led array branch road at least.
3. the drive unit of LED according to claim 1, it is characterized in that: described LED array (2) is made of the parallel connection of multi-group light-emitting diode led array branch road.
4. the drive unit of LED according to claim 1, it is characterized in that: switch arrays (3) are made of a plurality of switches.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009200333339U CN201515523U (en) | 2009-05-27 | 2009-05-27 | Driving device of light-emitting diode LED |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009200333339U CN201515523U (en) | 2009-05-27 | 2009-05-27 | Driving device of light-emitting diode LED |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201515523U true CN201515523U (en) | 2010-06-23 |
Family
ID=42486932
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009200333339U Expired - Fee Related CN201515523U (en) | 2009-05-27 | 2009-05-27 | Driving device of light-emitting diode LED |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201515523U (en) |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102421230A (en) * | 2011-09-15 | 2012-04-18 | 四川新力光源有限公司 | Color adjusting driver for LED (Light-Emitting Diode) lamp |
| CN102510598A (en) * | 2011-09-01 | 2012-06-20 | 上海显恒光电科技股份有限公司 | Current-adjustable multi-channel LED (Light-emitting Diode) drive control system and control method |
| CN102781142A (en) * | 2012-06-29 | 2012-11-14 | 中山市威星电器有限公司 | Turning on and off method and device thereof for lamp |
| CN102858061A (en) * | 2012-08-17 | 2013-01-02 | 王知康 | LED (light-emitting diode) power supply circuit controlled by multiple sections of switches |
| CN102866346A (en) * | 2012-09-14 | 2013-01-09 | 京东方科技集团股份有限公司 | Platform and method for testing light-emitting diode (LED) array drive efficiency |
| WO2014015560A1 (en) * | 2012-07-24 | 2014-01-30 | 上海亚明照明有限公司 | Drive circuit for led module |
| CN103697435A (en) * | 2013-11-27 | 2014-04-02 | 南通新世纪机电有限公司 | Lamp and control method thereof |
| EP2878876A1 (en) * | 2012-07-24 | 2015-06-03 | Shanghai Yaming Lighting Co., Ltd. | Integrated led module |
| CN107493635A (en) * | 2017-09-22 | 2017-12-19 | 浙江晶日照明科技有限公司 | A kind of more pixel drive systems of LED |
-
2009
- 2009-05-27 CN CN2009200333339U patent/CN201515523U/en not_active Expired - Fee Related
Cited By (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102510598A (en) * | 2011-09-01 | 2012-06-20 | 上海显恒光电科技股份有限公司 | Current-adjustable multi-channel LED (Light-emitting Diode) drive control system and control method |
| CN102421230B (en) * | 2011-09-15 | 2015-08-05 | 四川新力光源股份有限公司 | A kind of LED color adjustment driver |
| CN102421230A (en) * | 2011-09-15 | 2012-04-18 | 四川新力光源有限公司 | Color adjusting driver for LED (Light-Emitting Diode) lamp |
| CN104936350B (en) * | 2011-09-15 | 2017-12-12 | 四川新力光源股份有限公司 | A kind of light-dimming method of LED light emission device |
| CN104936350A (en) * | 2011-09-15 | 2015-09-23 | 四川新力光源股份有限公司 | Dimming method of LED light-emitting device |
| CN102781142A (en) * | 2012-06-29 | 2012-11-14 | 中山市威星电器有限公司 | Turning on and off method and device thereof for lamp |
| WO2014015560A1 (en) * | 2012-07-24 | 2014-01-30 | 上海亚明照明有限公司 | Drive circuit for led module |
| EP2878876A4 (en) * | 2012-07-24 | 2016-01-06 | Shanghai Yaming Lighting Co | Integrated led module |
| EP2878876A1 (en) * | 2012-07-24 | 2015-06-03 | Shanghai Yaming Lighting Co., Ltd. | Integrated led module |
| CN102858061A (en) * | 2012-08-17 | 2013-01-02 | 王知康 | LED (light-emitting diode) power supply circuit controlled by multiple sections of switches |
| CN102866346B (en) * | 2012-09-14 | 2014-12-10 | 京东方科技集团股份有限公司 | Platform and method for testing light-emitting diode (LED) array drive efficiency |
| CN102866346A (en) * | 2012-09-14 | 2013-01-09 | 京东方科技集团股份有限公司 | Platform and method for testing light-emitting diode (LED) array drive efficiency |
| CN103697435A (en) * | 2013-11-27 | 2014-04-02 | 南通新世纪机电有限公司 | Lamp and control method thereof |
| CN107493635A (en) * | 2017-09-22 | 2017-12-19 | 浙江晶日照明科技有限公司 | A kind of more pixel drive systems of LED |
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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: 20100623 Termination date: 20150527 |
|
| EXPY | Termination of patent right or utility model |