CN201407622Y - Led lamp - Google Patents
Led lamp Download PDFInfo
- Publication number
- CN201407622Y CN201407622Y CN2009201205499U CN200920120549U CN201407622Y CN 201407622 Y CN201407622 Y CN 201407622Y CN 2009201205499 U CN2009201205499 U CN 2009201205499U CN 200920120549 U CN200920120549 U CN 200920120549U CN 201407622 Y CN201407622 Y CN 201407622Y
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- CN
- China
- Prior art keywords
- light emitting
- emitting diode
- led lamp
- circuit
- led
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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Abstract
The utility model relates to an LED lamp. The LED lamp comprises a casing, an LED circuit, and LEDs in the circuit. The LEDs are connected in series in the LED circuit. The LED lamp adopts the technical scheme that each LED is in connected with a zener diode in parallel, and the zener diodes are in reverse connection. The LED lamp not only can not cause opened circuit, but also can not waste electricity and generate high temperature; in the method, the defects of the LEDs in series connection are better overcome, and the technical scheme is the optimal scheme at present.
Description
Affiliated technical field
The utility model relates to a kind of LED lamp.
Background technology
The LED lamp generally comprises the light emitting diode in housing, led circuit and the circuit.The connected mode of light emitting diode is all realized by led circuit.In the prior art, light emitting diode mainly contains series connection and two kinds of connected modes in parallel.
Parallel way generally adopts voltage stabilizing to drive, main advantage is not influence remaining light emitting diode operate as normal when a bad disconnection of light emitting diode quality, its shortcoming is that this connected mode is higher to the coherence request of light emitting diode, when the uniformity difference of light emitting diode is big, electric current by every light emitting diode can be inconsistent, the brightness difference that causes light emitting diode, service life is also different.So parallel way generally only is suitable for the lower product of supply voltage, the scope of its application is very little;
Most LED lamp adopts series system to connect on the prior art.Series system generally adopts constant current mode to drive, and its main advantage is when the uniformity difference of light emitting diode greatly the time, and is identical by the electric current of every light emitting diode, the brightness unanimity of light emitting diode.Its shortcoming is that the light emitting diode that is cascaded will all not work after a certain the bad disconnection of light emitting diode quality.In the prior art, to the solution of the problems referred to above are diodes to each light emitting diode and last four forwards, in normal operation, the pressure drop of four diode connected in parallel is greater than the pressure drop of light emitting diode, electric current mainly passes through from light emitting diode, when light emitting diode because during the bad disconnection of quality, electric current passes through from four diodes of parallel connection, thereby does not influence remaining light emitting diode work.But adopt this mode, there is 10% electric current to flow through this four diodes in normal operation approximately, just increase by 10% power consumption, the electric energy of this consumption occurs with the form of heat, temperature rise is increased, the life-span of luminous tube is reduced, also improved of the requirement of LED lamp heat dispersion.
Summary of the invention
The purpose of this utility model is to overcome the above-mentioned defective of prior art, the LED lamp that provides the tandem of a kind of less electrical energy consumption and less temperature rise to be connected.
The utility model comprises the light emitting diode in housing, led circuit and the circuit, and light emitting diode form with series connection in led circuit connects, and its technical scheme is the Zener diode that each light emitting diode is parallel with reverse connection.
In the utility model, the voltage stabilizing value of Zener diode is higher than the pressure drop of light emitting diode far away at ordinary times, so flow through the electric current of voltage-stabiliser tube almost is zero, when burning out, light emitting diode presents open circuit, all electric currents flow through Zener diode, Zener diode will burn out because of overcurrent, burn out the back and become conducting state, and the two ends pressure drop is very low.Neither can make open circuit can not waste electric energy again, also can not produce high temperature.The fine in this way shortcoming that solves the light emitting diode series connection is present classic scheme.
Description of drawings
Further illustrate particular content of the present utility model below in conjunction with drawings and Examples.
Fig. 1: light emitting diode electrical schematic diagram in the prior art;
Fig. 2: the structural representation of present embodiment;
Fig. 3: the electrical schematic diagram of present embodiment.
The specific embodiment
As shown in the figure, present embodiment comprises the light emitting diode 3 in housing 1, led circuit 2 and the circuit 2, and light emitting diode 3 form with series connection in led circuit 2 connects, and each light emitting diode 3 is parallel with the Zener diode 4 of reverse connection simultaneously.
Claims (1)
- A kind of LED lamp comprises the light emitting diode in housing, led circuit and the circuit, and light emitting diode form with series connection in led circuit connects, and it is characterized in that: each light emitting diode is parallel with the Zener diode of reverse connection.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009201205499U CN201407622Y (en) | 2009-05-20 | 2009-05-20 | Led lamp |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009201205499U CN201407622Y (en) | 2009-05-20 | 2009-05-20 | Led lamp |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201407622Y true CN201407622Y (en) | 2010-02-17 |
Family
ID=41678556
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009201205499U Expired - Fee Related CN201407622Y (en) | 2009-05-20 | 2009-05-20 | Led lamp |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201407622Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102404903A (en) * | 2010-09-13 | 2012-04-04 | 台达电子工业股份有限公司 | Lamp driving device |
-
2009
- 2009-05-20 CN CN2009201205499U patent/CN201407622Y/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102404903A (en) * | 2010-09-13 | 2012-04-04 | 台达电子工业股份有限公司 | Lamp driving device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20100217 Termination date: 20110520 |