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LED lamp driving power supply with lightning protection and automatic temperature control functions

A technology for LED lamps and driving power, which is applied in the direction of electric light sources, lamp circuit layout, output power conversion devices, etc. It can solve the problems of LED lamp damage and large LED lamps, and achieve the effect of preventing overheating

Active Publication Date: 2013-03-20
YEAL ELECTRIC CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Obviously, if the driving power supply of the LED lamp does not have the function of resisting the above-mentioned strong pulse, the LED lamp is easily damaged by the impact of the above-mentioned strong pulse;
[0010] 2. No temperature negative feedback and current negative feedback function
If the driving power supply of the LED lamp does not have the function of temperature negative feedback and current negative feedback, as the operating temperature continues to rise, the current of the LED lamp will become larger and larger, and the LED lamp will be damaged as a result.

Method used

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  • LED lamp driving power supply with lightning protection and automatic temperature control functions
  • LED lamp driving power supply with lightning protection and automatic temperature control functions
  • LED lamp driving power supply with lightning protection and automatic temperature control functions

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Embodiment Construction

[0037] Embodiments of the present invention will be described below in conjunction with the accompanying drawings.

[0038] figure 1It is a principle block diagram of the present invention, in which, the dotted box represents the rectifier bridge 100 . The first embodiment of the present invention is composed of step-down capacitor C1, rectifier bridge 100, filter capacitor C2, temperature control and current limiting circuit 200, characterized in that the rectifier bridge 100 is composed of bridge arm one 101 and bridge arm two 102 , bridge arm three 103 and bridge arm four 104; and, one end of said bridge arm one 101 and one end of bridge arm three 103 are connected together to become the input end 1 of said rectifier bridge 100, said bridge arm two 102, one end of bridge arm four 104 is connected together and becomes the input end 2 of described rectifier bridge 100; The output end 3 of the bridge arm three 103 and the other end of the bridge arm four 104 are connected to...

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Abstract

The invention discloses an LED (light-emitting diode) lamp driving power supply with lightning protection and automatic temperature control functions. The LED lamp driving power supply comprises a voltage reduction capacitor (C1), a rectifier bridge (100), a filter capacitor (C2) and a temperature control and current limiting circuit (200), wherein the rectifier bridge (100) consists of a bridge arm I (101), a bridge arm II (102), a bridge arm III (103) and a bridge arm IV (104); and the temperature control and current limiting circuit (200) consists of a triode (V), a positive temperature coefficient thermistor (PTC), a voltage stabilizing diode (DW) and a biasing resistor (R).

Description

technical field [0001] The present invention relates to the field of LED lamps, in particular to an "LED lamp drive power supply with both lightning strike resistance and automatic temperature control functions" having the functions of lightning strike resistance, automatic temperature control and automatic current limiting. Background technique [0002] Because of the advantages of energy saving, environmental protection, long life, fast response, rich colors, and controllability, LED lamps are recognized as the best way to realize energy saving and consumption reduction of lamps by promoting LED lamps. Japan estimates: If half of Japan's incandescent and fluorescent lamps are replaced with LED lamps, it will save Japan 6 billion liters of crude oil equivalently every year! Some people even think that: LED light is one of the most important inventions of human beings after Edison invented the incandescent light bulb. [0003] Lamp housing (or lampshade), Light Emitting Dio...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H05B37/02H02M1/32H02M7/12
Inventor 汪孟金
Owner YEAL ELECTRIC CO LTD
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