CN103052212A - Over-current protection light emitting diode (LED) lamp - Google Patents
Over-current protection light emitting diode (LED) lamp Download PDFInfo
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- CN103052212A CN103052212A CN2012104992191A CN201210499219A CN103052212A CN 103052212 A CN103052212 A CN 103052212A CN 2012104992191 A CN2012104992191 A CN 2012104992191A CN 201210499219 A CN201210499219 A CN 201210499219A CN 103052212 A CN103052212 A CN 103052212A
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Abstract
The invention discloses an over-current protection light emitting diode (LED) lamp, which comprises a plurality of LED lamps connected in series, a voltage and current detection unit, a voltage and current regulation unit and a control unit, wherein the positive and negative poles of the LED lamps are connected with the positive and negative poles of a power supply Uc; the voltage and current detection unit is connected in series with a circuit of the LED lamps, and is used for detecting voltage and current in the circuit; the voltage and current regulation unit is connected in parallel with the LED lamps, and is used for regulating the voltage and the current, which act on the LED lamps; and the control unit is connected with the voltage and current detection unit and the voltage and current regulation unit respectively, and is used for receiving the voltage and the current, which are detected by the voltage and current detection unit, in the circuit, judging whether the detected voltage and the detected current are higher than or lower than the normal working voltage and current of the LED lamps or not, and informing the voltage and current regulation unit of reducing or raising the voltage and the current. According to the over-current protection LED lamp, the current flowing through LEDs can be automatically detected and controlled during the work of the power supply, so that worry about over-current flowing through the LEDs in a flash of electrification and worry about the burnout of the power supply caused by the short-circuit of a load are eliminated.
Description
Technical field
The present invention relates to a kind of overcurrent protection LED lamp.
Background technology
LED(Light Emitting Diode, light-emitting diode) be a kind of can be the solid-state semiconductor device of visible light with electric energy conversion, can directly be converted into light to electricity.LED basic structure is an electroluminescent semi-conducting material, places on the leaded shelf, and an end is negative pole, and the other end connects the positive pole of power supply, then uses epoxy sealing all around, plays the effect of protection internal core.Because LED has environmental protection, high light efficiency, the powerful characteristic of low light attenuation, has been widely used in many lighting fields such as street lamp, bulkhead lamp capable, Tunnel Lamp, shot-light, fluorescent lamp.
The voltage potentially unstable of power supply, the quality problems of power supply for example, perhaps improper use of user etc. reason all may allow the supply voltage of power supply raise suddenly, and supply power voltage raises and causes especially easily the breaking-up of LED lamp.In addition, do not carry out the work of antistatic during assembling, may because static makes the internal damage of LED, demand urgently improving yet.
Summary of the invention
Problem for prior art exists the object of the invention is to propose a kind of overcurrent protection LED lamp, by enforcement of the present invention, prevents that overcurrent, overvoltage or static are to the damage of LED lamp.
For reaching this purpose, the present invention by the following technical solutions:
A kind of overcurrent protection LED lamp comprises a plurality of LED lamps of series connection, and its anodal negative pole is connected with the both positive and negative polarity of power supply Uc; Also comprise:
The electric current and voltage detecting unit is connected in the described LED circuit for lamp, for detection of the electric current and voltage in the described circuit;
The electric current and voltage regulon, in parallel with described LED lamp, be used for the electric current and voltage of regulating action on described LED lamp;
Control unit, be connected with the electric current and voltage regulon with described electric current and voltage detecting unit respectively, the electric current and voltage that is used for the circuit that the receiver voltage current detecting unit detects, judge whether to exceed or be lower than the electric current and voltage of LED lamp normal operation, and notify the reduction of electric current and voltage regulon or heighten electric current and voltage.
Preferably, parallel voltage-stabilizing diode D4 between the described power supply Uc.
Preferably, described electric current and voltage regulon is variable resistor.
Compared with prior art, the present invention has following beneficial effect:
Among the present invention, all can automatically detect and control the electric current that flows through LED during power work, the too high electric current that suddenly has that need not worry in energising flows through LED, also need not worry load short circuits and burn out power supply.
The invention accompanying drawing
Fig. 1 is a kind of overcurrent protection LED modulated structure figure that the embodiment of the invention 1 provides.
Drawing reference numeral:
D1, D2, D3, LED lamp; D4, voltage stabilizing didoe; 10, electric current and voltage detecting unit; 20, control unit; 30, electric current and voltage regulon.
Embodiment
The embodiment of the invention 1 provides a kind of overcurrent protection LED lamp, as shown in Figure 1, comprises a plurality of LED lamps (for example three, D1, D2, D3) of series connection, and its anodal negative pole is connected with the both positive and negative polarity of power supply Uc; Electric current and voltage detecting unit 10 is connected in the described LED circuit for lamp, for detection of the electric current and voltage in the described circuit; Electric current and voltage regulon 30, in parallel with described LED lamp, be used for the electric current and voltage of regulating action on described LED lamp; Control unit 20, are connected with the electric current and voltage regulon with described electric current and voltage detecting unit 10 respectively and are connected, the electric current and voltage that is used for the circuit that receiver voltage current detecting unit 10 detects, judge whether to exceed or be lower than the electric current and voltage of LED lamp normal operation, and notify 30 reductions of electric current and voltage regulon or heighten electric current and voltage.In addition, for the infringement that the instantaneous pressure that overcomes in the circuit causes, parallel voltage-stabilizing diode D4 between power supply Uc.Wherein, electric current and voltage regulon 30 can use variable resistor.
The above; only be the better embodiment of the present invention; but protection scope of the present invention is not limited to this; anyly be familiar with those skilled in the art in the technical scope that the present invention discloses; be equal to replacement or change according to technical scheme of the present invention and inventive concept thereof, all should be encompassed within protection scope of the present invention.
Claims (3)
1. overcurrent protection LED lamp comprises a plurality of LED lamps of series connection, and its anodal negative pole is connected with the both positive and negative polarity of power supply Uc; It is characterized in that, also comprise:
The electric current and voltage detecting unit is connected in the described LED circuit for lamp, for detection of the electric current and voltage in the described circuit;
The electric current and voltage regulon, in parallel with described LED lamp, be used for the electric current and voltage of regulating action on described LED lamp;
Control unit, be connected with the electric current and voltage regulon with described electric current and voltage detecting unit respectively, the electric current and voltage that is used for the circuit that the receiver voltage current detecting unit detects, judge whether to exceed or be lower than the electric current and voltage of LED lamp normal operation, and notify the reduction of electric current and voltage regulon or heighten electric current and voltage.
2. overcurrent protection LED lamp according to claim 1 is characterized in that, parallel voltage-stabilizing diode D4 between the described power supply Uc.
3. overcurrent protection LED lamp according to claim 1 is characterized in that, described electric current and voltage regulon is variable resistor.
Priority Applications (1)
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CN2012104992191A CN103052212A (en) | 2012-11-29 | 2012-11-29 | Over-current protection light emitting diode (LED) lamp |
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CN2012104992191A CN103052212A (en) | 2012-11-29 | 2012-11-29 | Over-current protection light emitting diode (LED) lamp |
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CN103052212A true CN103052212A (en) | 2013-04-17 |
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CN2012104992191A Pending CN103052212A (en) | 2012-11-29 | 2012-11-29 | Over-current protection light emitting diode (LED) lamp |
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Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN103604103A (en) * | 2013-12-04 | 2014-02-26 | 青岛锐晶光电科技有限公司 | LED module and recognition device and recognition method of LED module |
CN106028554A (en) * | 2016-06-30 | 2016-10-12 | 浙江大邦科技有限公司 | LED driver, and controller and control method thereof |
Citations (7)
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US20040251854A1 (en) * | 2003-06-13 | 2004-12-16 | Tomoaki Matsuda | Power supply for lighting |
CN101483951A (en) * | 2009-02-16 | 2009-07-15 | 湖南力芯电子科技有限责任公司 | LED driver and method for driving LED |
CN101827477A (en) * | 2009-03-06 | 2010-09-08 | 夏普株式会社 | Led drive circuit, LED lamp, LED lighting apparatus and LED illuminator |
WO2011058805A1 (en) * | 2009-11-13 | 2011-05-19 | 日亜化学工業株式会社 | Light-emitting diode drive device and light-emitting diode illumination control method |
CN102261583A (en) * | 2010-05-24 | 2011-11-30 | 台达电子工业股份有限公司 | Light source module |
US20120049755A1 (en) * | 2010-08-24 | 2012-03-01 | Takayuki Shimizu | Led drive circuit and led illumination component using the same |
CN102740556A (en) * | 2011-04-14 | 2012-10-17 | 日亚化学工业株式会社 | Light emitting diode driving device capable of inhibiting high higher harmonic component |
-
2012
- 2012-11-29 CN CN2012104992191A patent/CN103052212A/en active Pending
Patent Citations (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20040251854A1 (en) * | 2003-06-13 | 2004-12-16 | Tomoaki Matsuda | Power supply for lighting |
CN101483951A (en) * | 2009-02-16 | 2009-07-15 | 湖南力芯电子科技有限责任公司 | LED driver and method for driving LED |
CN101827477A (en) * | 2009-03-06 | 2010-09-08 | 夏普株式会社 | Led drive circuit, LED lamp, LED lighting apparatus and LED illuminator |
WO2011058805A1 (en) * | 2009-11-13 | 2011-05-19 | 日亜化学工業株式会社 | Light-emitting diode drive device and light-emitting diode illumination control method |
CN102261583A (en) * | 2010-05-24 | 2011-11-30 | 台达电子工业股份有限公司 | Light source module |
US20120049755A1 (en) * | 2010-08-24 | 2012-03-01 | Takayuki Shimizu | Led drive circuit and led illumination component using the same |
CN102740556A (en) * | 2011-04-14 | 2012-10-17 | 日亚化学工业株式会社 | Light emitting diode driving device capable of inhibiting high higher harmonic component |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN103604103A (en) * | 2013-12-04 | 2014-02-26 | 青岛锐晶光电科技有限公司 | LED module and recognition device and recognition method of LED module |
CN106028554A (en) * | 2016-06-30 | 2016-10-12 | 浙江大邦科技有限公司 | LED driver, and controller and control method thereof |
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Application publication date: 20130417 |