LED drive circuit and LED lamp

A technology of LED driving and driving circuit, applied in the direction of electric lamp circuit layout, electric light source, light source, etc., can solve the problems of accelerated LED light decay, aging, damage, etc.

Active Publication Date: 2013-12-18
OCEANS KING LIGHTING SCI&TECH CO LTD +1
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

LED is used as a constant current load, and the current flowing through the LED must be kept within the rated current. However, when the LED junction temperature rises, if the LED current is not controlled in time, the output current value of the drive circuit is reduced to lower the LED junction temperature. Otherwise, it will accelerate the light decay, aging or even damage of the LED, which will seriously shorten the service life of the LED

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  • LED drive circuit and LED lamp
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Embodiment Construction

[0033] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of the present invention.

[0034] See figure 1 , is a schematic diagram of the structure and composition of the LED driving circuit of the embodiment of the present invention.

[0035] In the embodiment of the present invention, the LED driving circuit is connected to the power supply and the LED load, and the structural composition of the LED driving circuit specifically includes: a temperature control unit 1, a temperature detection unit 2, and a constant current integrated output unit 3, ...

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Abstract

The invention discloses an LED drive circuit and an LED lamp. The drive circuit is connected with a power source and an LED load and comprises a temperature detection unit, a temperature control unit, a constant-current integrated output unit. The temperature detection unit is connected with the temperature control unit. The input end of the constant-current integrated output unit is connected with the temperature control unit. The output end of the constant-current integrated output unit is connected with the LED load. The temperature control unit is connected with both the temperature detection unit and the constant-current integrated output unit. The temperature control unit controls the constant-current integrated output unit to output to operating current of the LED load according to the temperature of the LED load, detected by the temperature detection unit. The temperature detection unit comprises a thermistor R12. One end of the thermistor R12 is earthed, and the other end of the thermistor R12 is connected with a temperature detection pin of a single-chip microcomputer chip in the temperature control unit.

Description

[0001] technical field [0002] The invention relates to the field of LED driving, in particular to an LED driving control circuit and an LED lamp. Background technique [0003] As a new type of light source, LED has the characteristics of energy saving, environmental protection and high efficiency. The technology has matured and been applied in various fields, and various LED drive circuits have also appeared. LED is used as a constant current load, and the current flowing through the LED must be kept within the rated current. However, when the LED junction temperature rises, if the LED current is not controlled in time, the output current value of the drive circuit is reduced to lower the LED junction temperature. Otherwise, it will accelerate the light decay, aging or even damage of LED, which will seriously shorten the service life of LED. Contents of the invention [0004] The technical problem to be solved by the embodiments of the present invention is to provide an...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H05B37/02
Inventor 周明杰孙占民
Owner OCEANS KING LIGHTING SCI&TECH CO LTD
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