CN201467509U - LED illuminating circuit - Google Patents
LED illuminating circuit Download PDFInfo
- Publication number
- CN201467509U CN201467509U CN2009200623030U CN200920062303U CN201467509U CN 201467509 U CN201467509 U CN 201467509U CN 2009200623030 U CN2009200623030 U CN 2009200623030U CN 200920062303 U CN200920062303 U CN 200920062303U CN 201467509 U CN201467509 U CN 201467509U
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- parallel
- led
- circuit
- leds
- positive pole
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Abstract
The utility model discloses an LED illuminating circuit which comprises a power supply circuit, wherein an LED lamp string is connected between the anode and the cathode of the power supply circuit, and the LED lamp string is formed by together connecting a plurality of parallel illuminating units in series; the parallel illuminating units are formed by together connecting a plurality of LEDs in parallel, the cathodes of all the LEDs are connected together to be used as the cathodes of the parallel illuminating units, and the anodes of all the LEDs are connected together to be used as the anodes of the parallel illuminating units. Because the LED lamp string is formed by connecting the LEDs in parallel and then together connecting the parallel LEDs in series, when one LED is damaged, the current flows through the residual LEDs; and when a plurality of groups of parallel LEDs are connected in series for use, the normal operation of the entire lamp can not be influenced by the damage of one LED, and the product has good quality and long service life.
Description
[technical field]
The utility model relates to a kind of LED lighting circuit.
[background technology]
LED lamp string in the existing LED lighting circuit all is to be connected into delegation and to be formed by a plurality of LED, like this, after any one LED in the LED lamp string damages, the capital has influence on the operate as normal of whole LED lamp string, the quality and the useful life of product have been reduced so widely, in order to address the above problem, the inventor designs the utility model.
[utility model content]
The utility model has overcome the deficiency of above-mentioned technology, and the quality of operate as normal, product that whole LED lamp string can not be provided after providing a kind of any one LED to damage is good, the LED lighting circuit of long service life.
For achieving the above object, the utility model has adopted following technical proposal:
A kind of LED lighting circuit includes power circuit, is connected with LED lamp string between the positive pole of power circuit, negative pole, and this LED lamp string is cascaded by a plurality of lighting units in parallel and forms; Described lighting unit in parallel is connected in parallel by a plurality of LED and forms, and the negative pole of all LED links together as the negative pole of lighting unit in parallel, and the positive pole of all LED links together as the positive pole of lighting unit in parallel.
Compared with prior art, the beneficial effects of the utility model are: 1, owing to LED lamp string of the present utility model is to adopt to be cascaded after a plurality of LED parallel connections to form again, after one of them LED damages, electric current will flow through from remaining LED, just can accomplish to damage the operate as normal that a LED can not influence whole lamp when the LED of many groups parallel connection series connection is used, the quality of product is good, long service life; 2, circuit structure of the present utility model is simple, and is reasonable in design, is convenient to a large amount of productions.
[description of drawings]
Fig. 1 is a structure chart of the present utility model.
[embodiment]
Be described in further detail below in conjunction with accompanying drawing and execution mode of the present utility model:
Referring to Fig. 1, the utility model is a kind of LED lighting circuit, include power circuit 1, positive pole at power circuit 1, be connected with LED lamp string 2 between the negative pole, this LED lamp string 2 is cascaded by a plurality of lighting units 3 in parallel and forms, annexation between the lighting unit 3 in parallel is: the positive pole of a lighting unit in parallel is connected with the negative pole of previous lighting unit in parallel, and the negative pole of this lighting unit in parallel is connected with the positive pole of a back lighting unit in parallel, the positive pole of head end lighting unit in parallel is connected with the positive pole of power circuit 1 then, and the negative pole of tail end lighting unit in parallel is connected with the negative pole of power circuit 1.Described lighting unit in parallel 3 is connected in parallel by a plurality of LED and forms, LED in the present embodiment in each lighting unit 3 in parallel is 8, the negative pole of 8 LED is joined together to form the negative pole of lighting unit 3 in parallel, and the positive pole of 8 LED is joined together to form the positive pole of lighting unit 3 in parallel.
Described power circuit 1 includes rectification circuit that is connected with extraneous alternating current and the reduction voltage circuit that is connected with rectification circuit, and wherein two of reduction voltage circuit outputs are respectively positive pole, the negative pole of power circuit 1.
Reduction voltage circuit includes a plurality of resistance and an electric capacity, and after some resistance were cascaded, an end was connected with the forward output of rectification circuit, and the other end is connected the positive pole of back as power circuit 1 with an end of electric capacity; And after other resistance were cascaded, an end was connected with the negative sense output of rectification circuit, and the other end is connected the negative pole of back as power circuit 1 with the other end of electric capacity.
Claims (4)
1. a LED lighting circuit includes power circuit (1), is connected with LED lamp string (2) between the positive pole of power circuit (1), negative pole, it is characterized in that this LED lamp string (2) is cascaded by a plurality of lighting units in parallel (3) and forms; Described lighting unit in parallel (3) is connected in parallel by a plurality of LED and forms, and the negative pole of all LED links together as the negative pole of lighting unit in parallel (3), and the positive pole of all LED links together as the positive pole of lighting unit in parallel (3).
2. a kind of LED lighting circuit according to claim 1 is characterized in that the LED in each lighting unit in parallel (3) is 8.
3. a kind of LED lighting circuit according to claim 1 and 2, it is characterized in that described power circuit (1) includes rectification circuit that is connected with extraneous alternating current and the reduction voltage circuit that is connected with rectification circuit, wherein two of reduction voltage circuit outputs are respectively positive pole, the negative pole of power circuit (1).
4. a kind of LED lighting circuit according to claim 3, it is characterized in that reduction voltage circuit includes a plurality of resistance and an electric capacity, after some resistance are cascaded, one end is connected with the forward output of rectification circuit, and the other end is connected the positive pole of back as power circuit (1) with an end of electric capacity; And after other resistance were cascaded, an end was connected with the negative sense output of rectification circuit, and the other end is connected the negative pole of back as power circuit (1) with the other end of electric capacity.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009200623030U CN201467509U (en) | 2009-08-08 | 2009-08-08 | LED illuminating circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009200623030U CN201467509U (en) | 2009-08-08 | 2009-08-08 | LED illuminating circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201467509U true CN201467509U (en) | 2010-05-12 |
Family
ID=42394853
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009200623030U Expired - Fee Related CN201467509U (en) | 2009-08-08 | 2009-08-08 | LED illuminating circuit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201467509U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108375057A (en) * | 2018-01-22 | 2018-08-07 | 刘华旺 | The multiunit return wire type wire connection structure of more devices that can flexibly increase and decrease |
-
2009
- 2009-08-08 CN CN2009200623030U patent/CN201467509U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108375057A (en) * | 2018-01-22 | 2018-08-07 | 刘华旺 | The multiunit return wire type wire connection structure of more devices that can flexibly increase and decrease |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee |
Owner name: MLS CO., LTD. Free format text: FORMER NAME: M.L.S. ELECTRONICS CO., LTD. |
|
| CP01 | Change in the name or title of a patent holder |
Address after: 528400 Guangdong Province, Zhongshan city Dongming road M.L.S. Electronics Co. Ltd. Patentee after: MLS Co., Ltd. Address before: 528400 Guangdong Province, Zhongshan city Dongming road M.L.S. Electronics Co. Ltd. Patentee before: M.L.S Electronics Co., Ltd. |
|
| C56 | Change in the name or address of the patentee | ||
| CP02 | Change in the address of a patent holder |
Address after: No. 1 road 528415 Guangdong province Linsen Zhongshan Xiaolan Town Patentee after: MLS Co., Ltd. Address before: One or two, 528402, three, Dongming North first pioneer park, Shiqi District, Guangdong, Zhongshan Patentee before: MLS Co., Ltd. |
|
| DD01 | Delivery of document by public notice |
Addressee: Lai Aimei Document name: Notification of Passing Examination on Formalities |
|
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20100512 Termination date: 20180808 |