CN201766759U - Driving circuit of LED lamps - Google Patents
Driving circuit of LED lamps Download PDFInfo
- Publication number
- CN201766759U CN201766759U CN2010205263142U CN201020526314U CN201766759U CN 201766759 U CN201766759 U CN 201766759U CN 2010205263142 U CN2010205263142 U CN 2010205263142U CN 201020526314 U CN201020526314 U CN 201020526314U CN 201766759 U CN201766759 U CN 201766759U
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- 230000001276 controlling effect Effects 0.000 description 3
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
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Abstract
A driving circuit of an LED lamp comprises a current source, a plurality of LED groups and a plurality of switches. The current source is connected with the LED groups in series, and each switch is respectively connected with one corresponding LED group in parallel to control the on/off state of each switch so as to determine whether the corresponding LED group emits light or not. The driving circuit only comprises one circuit loop, relevant parameters of the LED lamp can be adjusted, and the driving circuit is simple in structure, small in occupied area and low in cost.
Description
Technical field
The utility model relates to a kind of drive circuit of LED light fixture, especially relates to a kind of drive circuit of LED light fixture simple in structure.
Background technology
LED since have the life-span long, power consumption is few, brightness is high and characteristics such as environmental protection, therefore, LED has little by little replaced traditional light-emitting devices such as incandescent lamp, fluorescent lamp and discharge lamp, becomes novel light-emitting device.
Fig. 1 illustrates the schematic diagram into a kind of drive circuit of existing LED light fixture.As shown in Figure 1, this LED light fixture is one can change the LED light fixture of color.Particularly, the drive circuit 10 of this LED light fixture comprises red-light LED loop 11, green light LED loop 12 and blue-ray LED loop 13.Wherein, red-light LED loop 11 comprises current source 11a and at least one red-light LED 11b, and in like manner, green light LED loop 12 comprises current source 12a and at least one green light LED 12b, and blue-ray LED loop 13 comprises current source 13a and at least one blue-ray LED 13b.Whether the existing drive circuit 10 that changes the LED light fixture of color provides electric energy to red-light LED 11b, green light LED 12b and blue-ray LED 13b by Control current source 11a, 12a and 13a, and whether definite red-light LED 11b, green light LED 12b and blue-ray LED 13b be luminous, so that the LED light fixture can send the light of different colours.But, the drive circuit 10 of the LED light fixture of existing convertible color must comprise the LED loop of three different colours, and the LED loop of each different colours all needs to be provided with corresponding current sources, so its circuit structure is comparatively complicated, area occupied is bigger, and its cost is higher.
The utility model content
For the circuit structure complexity of the drive circuit that overcomes existing LED light fixture, the big and higher deficiency of cost of area occupied, the utility model provides a kind of drive circuit of LED light fixture, and its circuit structure is simple, and area occupied is less and cost is lower.
The technical scheme that its technical problem that solves the utility model adopts is: a kind of drive circuit of LED light fixture is provided, and it comprises a current source, a plurality of LED groups and a plurality of switch.Wherein this current source and those LED group is cascaded, thereby and each switch LED group of being parallel to a correspondence respectively determine with the conduction and cut-off state of controlling each switch whether this corresponding LED group luminous.
Preferably, this LED light fixture LED light fixture that is a convertible color.Those LED group comprises at least one in order to sending the red-light LED group of red light, and is at least one in order to sending the green light LED group of green light, and at least one in order to send the blue-ray LED group of blue light.This red-light LED group comprises at least one red-light LED, and this green light LED group comprises at least one green light LED, and this blue-ray LED group comprises at least one blue-ray LED.
Preferably, this LED light fixture is the whole LED light fixture of an adjustable brightness.All in order to send the light of a same color, the LED that those LED groups are in order to send white light organizes those LED groups, and each LED group comprises at least one white light LEDs.In addition, the quantity of those white light LEDs in those LED groups is mutually the same.Perhaps the quantity of those white light LEDs in those LED groups differs from one another.
Preferably, this LED light fixture is the adjustable LED light fixture of a colour temperature.
The beneficial effects of the utility model are, the drive circuit of LED light fixture includes only the relevant parameter that the LED light fixture just can be adjusted in an electric loop, for example adjusts color, brightness or colour temperature or the like, and it is simple in structure, and area occupied is less, and can greatly reduce cost.
Description of drawings
Below in conjunction with drawings and Examples the utility model is further specified.
Fig. 1 is a kind of schematic diagram of drive circuit of existing LED light fixture.
The schematic diagram of the drive circuit of the LED light fixture that Fig. 2 is disclosed for the utility model one embodiment.
The schematic diagram of the drive circuit of the LED light fixture that Fig. 3 is disclosed for another embodiment of the utility model.
Among the figure 10,100,200: the drive circuit of the LED light fixture of convertible color
11: red LED loop 12: green LED loop 13: the blue led loop
11a, 12a, 13a, 110,210: current source 11b: red LED 12b: green LED
13b: blue led 120,220: the one LED groups 130,230: the two LED groups
140,240: the three LED groups 150,250: the first switches 160,260: second switch
170,270: the three switches.
Embodiment
See also Fig. 2, it illustrates the schematic diagram of the drive circuit of the LED light fixture that is disclosed for the utility model one embodiment.As shown in Figure 2, the LED light fixture that present embodiment disclosed can be the LED light fixture of a convertible color, and the drive circuit 100 of above-mentioned LED light fixture comprises current source 110, LED group the 120, the 2nd LED group the 130, the 3rd LED group 140, first switch 150, second switch 160 and the 3rd switch 170.Wherein, current source 110, LED group the 120, the 2nd LED group the 130 and the 3rd LED group 140 are cascaded and form a loop.And LED group the 120, the 2nd LED group the 130 and the 3rd LED group 140 is respectively in order to send the monochromatic light of different colours, for example LED group 120 is in order to send red light, the 2nd LED group 130 is in order to sending green light, and the 3rd LED group 140 is in order to send blue light.
Particularly, LED group 120 comprises at least one red LED sending red light, and the 2nd LED group 130 comprises at least one green LED sending green light, and the 3rd LED group 140 comprises that at least one blue led is to send blue light.
In addition, first switch 150 is parallel to LED group 120, and second switch 160 is parallel to the 2nd LED group 130, and the 3rd switch 170 is parallel to the 3rd LED group 140.The drive circuit 100 of the LED light fixture of the convertible color that present embodiment disclosed by controlling whether conducting first switch 150, second switch 160 and the 3rd switch 170 corresponding LED group the 120, the 2nd LED group the 130 and the 3rd LED group 140 of decision whether luminous.
Particularly, when the LED light fixture does not need to send red light, then first switch, 150 conductings, the electric current that this moment, current source 110 provided can be walked around LED group 120 through first switch 150, thereby can not send red light; When the LED light fixture need send red light, then second switch 160 ended, and the electric current that this moment, current source 110 was provided is organized through a LED, thereby sends red light.Same, when the LED light fixture does not need to send green light, then second switch 160 conductings, the electric current that this moment, current source 110 provided is walked around the 2nd LED group 130 through second switch 160, thereby can not send green light; When the LED light fixture need send green light, then second switch 160 ended, and the electric current that this moment, current source 110 was provided organizes 130 through the 2nd LED, thereby sends green light.And when the LED light fixture does not need to send blue light, then the 3rd switch 170 conductings, the electric current that this moment, current source 110 provided is walked around the 3rd LED group 140 through the 3rd switch 170, thereby can not send green light; When the LED light fixture need send blue light, then the 3rd switch 170 ended, and the electric current that this moment, current source 110 was provided organizes 140 through the 3rd LED, thereby sends blue light.
First switch 150, second switch 160 and the 3rd switch 170 are controlled by clock pulse signal, by regulating the frequency and the pulse duration of clock pulse signal, can adjust LED group the 120, the 2nd LED group the 130 and the 3rd LED group 140 ruddiness that sent, green glow and the light intensity of blue light in the unit interval, the light that can form various different colours after its colour mixture is so that the whole LED light fixture can send the light of different colours.
In addition, it will be appreciated by persons skilled in the art that LED group the 120, the 2nd LED group the 130 and the 3rd LED group 140 of present embodiment also can be the monochromatic combination of sending other different colours, for example, red, yellow and blue monochromatic light or the like.
See also Fig. 3, it illustrates the drive circuit schematic diagram of the LED light fixture that is disclosed for another embodiment of the utility model.As shown in Figure 3, the LED light fixture that present embodiment disclosed can be the whole LED light fixture of an adjustable brightness.Particularly, the drive circuit 200 of above-mentioned LED light fixture comprises current source 210, LED group the 220, the 2nd LED group 230, the 3rd group of 240, first switch 250, second switch 260 and the 3rd switch 270.Wherein, current source 210, LED group the 220, the 2nd LED group are cascaded for 230 and the 3rd group 240 and form a loop.And first switch 250 is parallel to LED group 220, and second switch 260 is parallel to the 2nd LED group 230, the three switches 270 and is parallel to the 3rd LED group 240.
The one LED group the 220, the 2nd LED organizes 230 and the 3rd group 240 all in order to send the light of same color, and for example white light, and each LED is organized and comprised at least one white light LEDs.The quantity of the white light LEDs during in the present embodiment, LED group the 220, the 2nd LED organizes 230 and the 3rd group 240 differs from one another.The drive circuit 200 of the LED light fixture that the adjustable brightness that present embodiment disclosed is whole is determined whether switch of 230 and the 3rd group 240 of corresponding LED group the 220, the 2nd LED group by whether controlling conducting first switch 250, second switch 260 and the 3rd switch 270, to adjust the brightness of whole LED light fixture.In addition, the quantity that it will be appreciated by persons skilled in the art that the white light LEDs in 230 and the 3rd group 240 of LED group the 220, the 2nd LED group also can be set at mutually the same.
In addition, it will be appreciated by persons skilled in the art that the drive circuit of the LED light fixture that the utility model discloses also can be applied on the adjustable LED light fixture of colour temperature, determine by switch whether corresponding LED group sends, to reach the purpose of adjusting colour temperature.Certainly, the drive circuit of the LED light fixture that the utility model disclosed also can be applied on other the LED light fixture, to adjust the relevant parameter of LED light fixture.
In sum, the drive circuit of the LED light fixture that the utility model disclosed includes only the relevant parameter that the LED light fixture just can be adjusted in an electric loop, for example adjusts color, brightness or colour temperature or the like, and it is simple in structure, area occupied is less, and can greatly reduce cost.
The above, it only is preferred embodiment of the present utility model, be not that the utility model is done any pro forma restriction, though the utility model discloses as above with preferred embodiment, yet be not in order to limit the utility model, any those skilled in the art, in not breaking away from the technical solutions of the utility model scope, when the technology contents that can utilize above-mentioned announcement is made a little change or is modified to the equivalent embodiment of equivalent variations, in every case be not break away from the technical solutions of the utility model content, according to technical spirit of the present utility model to any simple modification that above embodiment did, equivalent variations and modification all still belong in the scope of technical solutions of the utility model.
Claims (10)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010205263142U CN201766759U (en) | 2010-09-13 | 2010-09-13 | Driving circuit of LED lamps |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010205263142U CN201766759U (en) | 2010-09-13 | 2010-09-13 | Driving circuit of LED lamps |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201766759U true CN201766759U (en) | 2011-03-16 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010205263142U Expired - Lifetime CN201766759U (en) | 2010-09-13 | 2010-09-13 | Driving circuit of LED lamps |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201766759U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102404898A (en) * | 2010-09-13 | 2012-04-04 | 凯杰照明股份有限公司 | Driving circuit of LED lamp |
| CN104114940A (en) * | 2011-08-10 | 2014-10-22 | 皇家飞利浦有限公司 | Retractable lighting fixture |
-
2010
- 2010-09-13 CN CN2010205263142U patent/CN201766759U/en not_active Expired - Lifetime
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102404898A (en) * | 2010-09-13 | 2012-04-04 | 凯杰照明股份有限公司 | Driving circuit of LED lamp |
| CN104114940A (en) * | 2011-08-10 | 2014-10-22 | 皇家飞利浦有限公司 | Retractable lighting fixture |
| CN104114940B (en) * | 2011-08-10 | 2017-10-13 | 飞利浦灯具控股公司 | Telescopic luminating device |
| US9803843B2 (en) | 2011-08-10 | 2017-10-31 | Philips Lighting Holding B.V. | Retractable lighting fixture |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| ASS | Succession or assignment of patent right |
Owner name: HONGQI SCIENCE + TECHNOLOGY CO., LTD. Free format text: FORMER OWNER: KAIJIE LIGHTING CO., LTD. Effective date: 20130802 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20130802 Address after: 522, Lane 5, Zhonghua Road, Hsinchu, Taiwan, China 18 Patentee after: Hongqi Science & Technology Co., Ltd. Address before: Two Taiwan city Taipei County Road China Xinzhuang Industrial Zone five shares of five power No. eight seven floor Patentee before: Lite Pa Co.,Ltd. |
|
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20110316 |