CN201074741Y - LED lighting circuit - Google Patents
LED lighting circuit Download PDFInfo
- Publication number
- CN201074741Y CN201074741Y CNU2007200547396U CN200720054739U CN201074741Y CN 201074741 Y CN201074741 Y CN 201074741Y CN U2007200547396 U CNU2007200547396 U CN U2007200547396U CN 200720054739 U CN200720054739 U CN 200720054739U CN 201074741 Y CN201074741 Y CN 201074741Y
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- Prior art keywords
- circuit
- led
- current
- led lamp
- lamp string
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Abstract
The utility model discloses an LED lighting circuit, which comprises a power supply circuit, a load circuit and a current-limiting circuit which are connected in turn. The load circuit is composed of at least one group of LED lamps whose front end is connected with the power supply circuit and tail end is connected with the current-limiting circuit. The two ends of each LED bulb are at least connected in parallel with an electronic component. Therefore, the electric current can pass through the electronic component when one of the LED bulb is broken, and the other LED bulbs can work normally without affecting the whole LED lamp, thereby solving the problem that the whole LED lamp does not work which is caused by the damage of one LED bulb, and greatly increasing the stability of the circuit.
Description
[technical field]
The utility model relates to a kind of light fixture, relates in particular to a kind of LED lighting circuit.
[background technology]
The LED technology is ripe gradually now, and LED pours into illuminating industry.At present, adopting the common practices of LED illumination is that a plurality of LED bulbs are cascaded, and then the one end is connected other end ground connection with power supply.So just, formed the LED lighting circuit, can be conveniently for people to use.Yet, LED bulb in the present stage LED lighting circuit generally is not parallel with other electronic component, so, as long as have a LED bulb to damage in one group of LED lamp string and open a way, so this LED lamp string will be involved, can not be luminous, whole LED lamp string just is in open-circuit condition.How making the damage of each LED bulb can not have influence on whole lamp string, will be a much progress of LED illumination so.For overcoming the above problems, the utility model arises at the historic moment thus.
[utility model content]
The utility model has overcome the deficiency of above-mentioned technology, and a kind of LED lighting circuit of simple in structure, stable performance is provided.
For achieving the above object, the utility model has adopted following technical proposal:
A kind of LED lighting circuit that the utility model is related, it includes power circuit, load circuit, the current-limiting circuit that connects in turn, described load circuit is made up of at least one group of LED lamp string, the head end of described LED lamp string is connected with power circuit, the tail end of LED lamp string is connected with current-limiting circuit, it is characterized in that: the two ends at each LED bulb all are parallel with an electronic component at least.
Aforesaid a kind of LED lighting circuit is characterized in that: described electronic component is a resistance.
Aforesaid a kind of LED lighting circuit is characterized in that: described electronic component is a Zener diode.
Aforesaid a kind of LED lighting circuit, it is characterized in that: described current-limiting circuit is made up of several current-limiting resistances, and an end of each current-limiting resistance is connected on the tail end of each LED lamp string respectively, the other end ground connection of current-limiting resistance.
Compared with prior art the beneficial effect that the utility model had is:
1, because the head end of described LED lamp string is connected with power circuit, the tail end of LED lamp string is connected with current-limiting circuit, all is parallel with one or more electronic components at the two ends of each LED bulb.When some LED bulbs damage in the LED lamp string, electric current will flow through from its electronic component RD in parallel like this, and other LED bulb still can be worked, so do not have influence on whole LED lamp string.Promptly solved because of a LED bulb damages the whole group of problem that LED lamp string does not work that causes, increased the stability of circuit greatly.
2, the utility model is simple in structure, easy to use.
3, the utility model control is convenient, as long as adjust just arbitrarily light modulation of electric current.
4, the utility model is in light weight, and easy transportation and installation are difficult for broken.
5, the utility model environmental protection, owing to do not have ultraviolet ray and infrared ray in the spectrum, radiationless, be that green illumination light source can be recycled.
6, the utility model power consumption is low, the life-span is long.
[description of drawings]
Be described in further detail below in conjunction with accompanying drawing and embodiment of the present utility model:
Fig. 1 is circuit theory diagrams of the present utility model.
[specific embodiment]
As shown in Figure 1, a kind of LED lighting circuit, it includes power circuit A1, load circuit A2, the current-limiting circuit A3 that connects in turn, and described load circuit A2 is made up of at least one group of LED lamp string, when LED lamp string is more than one group the time, connect in parallel between them.The head end of described LED lamp string is connected with power circuit A1, and the tail end of LED lamp string is connected with current-limiting circuit A3, and the two ends of each the LED bulb in LED lamp string all are parallel with an electronic component RD at least.When some LED bulbs damage in the LED lamp string, electric current will flow through from its electronic component RD in parallel like this, and other LED bulb still can be worked; So do not have influence on whole LED lamp string.Promptly solved the whole group of problem that LED lamp string does not work that causes because of a LED bulb damage.
Described electronic component RD can be resistance, also can be Zener diode or other electronic component.Also parallel resistor and Zener diode can be, the resistance and the Zener diode of series connection can also be.
Described power circuit A1 comprises by capacitor C 1, resistance R 1, bridge rectifier D1, filter capacitor C4 and forming.Capacitor C 1, resistance R 1 back in parallel one end are connected with an ac input end; Be connected on the input of bridge rectifier D1 after the other end after capacitor C 1, resistance R 1 parallel connection connects, another input of bridge rectifier D1 is connected with another ac input end.The output of bridge rectifier D1 connects load circuit A2, and it is simultaneously by capacitor C 4 ground connection.By bridge rectifier D1 rectification, obtain DC voltage supply load circuit A2 stably after capacitor C 4 filtering behind the resistance-capacitance depressurization that capacitor C 1, resistance R 1 are formed.
Described current-limiting circuit A3 is made up of several current-limiting resistances, and an end of each current-limiting resistance is connected on the tail end of each LED lamp string respectively, the other end ground connection of current-limiting resistance.Change the operating current that its current-limiting resistance resistance can change LED lamp string.
Claims (4)
1. LED lighting circuit, it includes power circuit (A1), load circuit (A2), the current-limiting circuit (A3) that connects in turn, described load circuit (A2) is made up of at least one group of LED lamp string, the head end of described LED lamp string is connected with power circuit (A1), the tail end of LED lamp string is connected with current-limiting circuit (A3), it is characterized in that: the two ends at each LED bulb all are parallel with an electronic component (RD) at least.
2. a kind of LED lighting circuit according to claim 1 is characterized in that: described electronic component (RD) is a resistance.
3. a kind of LED lighting circuit according to claim 1 is characterized in that: described electronic component (RD) is a Zener diode.
4. a kind of LED lighting circuit according to claim 1 is characterized in that: described current-limiting circuit (A3) is made up of several current-limiting resistances, and an end of each current-limiting resistance is connected on the tail end of each LED lamp string respectively, the other end ground connection of current-limiting resistance.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007200547396U CN201074741Y (en) | 2007-07-27 | 2007-07-27 | LED lighting circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007200547396U CN201074741Y (en) | 2007-07-27 | 2007-07-27 | LED lighting circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201074741Y true CN201074741Y (en) | 2008-06-18 |
Family
ID=39520004
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2007200547396U Expired - Fee Related CN201074741Y (en) | 2007-07-27 | 2007-07-27 | LED lighting circuit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201074741Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102679289A (en) * | 2012-04-19 | 2012-09-19 | 莫绍祥 | Light source and light emitting diode lamp circuit thereof |
-
2007
- 2007-07-27 CN CNU2007200547396U patent/CN201074741Y/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102679289A (en) * | 2012-04-19 | 2012-09-19 | 莫绍祥 | Light source and light emitting diode lamp circuit thereof |
| CN102679289B (en) * | 2012-04-19 | 2014-09-10 | 莫绍祥 | Light source and light emitting diode lamp circuit thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| DD01 | Delivery of document by public notice |
Addressee: Chen Wei Document name: Notification that Application Deemed not to be Proposed |
|
| C56 | Change in the name or address of the patentee |
Owner name: M.L.S. ELECTRONICS CO., LTD. Free format text: FORMER NAME: ZHONGSHAN MULINSEN ELECTRONIC CO., LTD. |
|
| CP03 | Change of name, title or address |
Address after: Dongming 528400 Guangdong province Zhongshan City Shiqi District North first park one or two, building three Patentee after: M.L.S Electronics Co., Ltd. Address before: 528400 Dongming North Road, Guangdong, Zhongshan Patentee before: Zhongshan M.L.S. Electronics Co., Ltd. |
|
| 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: Dongming 528400 Guangdong province Zhongshan City Shiqi District North first park one or two, building three Patentee after: MLS Co., Ltd. Address before: Dongming 528400 Guangdong province Zhongshan City Shiqi District North first park one or two, building three 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: 1 No. 528415 Zhongshan City Xiaolan Town, Linsen Road Patentee after: MLS Co., Ltd. Address before: Dongming 528400 Guangdong province Zhongshan City Shiqi District North first park one or two, building three Patentee before: MLS Co., Ltd. |
|
| DD01 | Delivery of document by public notice |
Addressee: Lai Aimei Document name: Notification to Pay the Fees |
|
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20080618 Termination date: 20130727 |