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Intelligent temperature-controlled light-modulation control circuit of LED electric torch

A dimming control circuit, LED flashlight technology, applied in energy-saving control technology, lamp circuit layout, electric light source and other directions, can solve the problems of large current, shortened LED service life, flashlight heating, etc., to achieve convenient use, enhance brightness, reduce cost effect

Inactive Publication Date: 2014-01-15
OCEANS KING LIGHTING SCI&TECH CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Under strong light conditions, the current flowing through the LED is large, and the heat emitted by the LED is high, and natural ventilation cannot be used to quickly dissipate heat. Therefore, LED flashlights are prone to heat when working under strong light conditions.
This will shorten the service life of the LED and make the user feel uncomfortable when holding the flashlight due to the heat.

Method used

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  • Intelligent temperature-controlled light-modulation control circuit of LED electric torch

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Embodiment Construction

[0016] 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.

[0017] The LED flashlight intelligent temperature control and dimming control circuit of the embodiment of the present invention includes:

[0018] A battery power supply circuit for supplying power to the light-emitting diode; a dimming circuit for providing direct current to the light-emitting diode; a pulse driving signal for generating the light-emitting diode, and changing the pulse driving signal according to the temperature of the light-emitting diode The du...

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PUM

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Abstract

An embodiment of the invention discloses a temperature-controlled light-modulation control circuit of an LED electric torch, which comprises the following components: a battery power supply circuit which is used for supplying electric power to the LED, a light modulating circuit which is used for supplying DC current to the LED, and a control circuit which is used for generating a pulse driving signal for the light modulating circuit and changes a duty ratio of the pulse driving signal according to the temperature of the LED thereby controlling the amplitude of the DC current for realizing a temperature control purpose. According to the temperature-controlled light-modulation control circuit of the LED electric torch, the temperature of the LED is used as a feedback signal for controlling the amplitude of the DC current which flows over the LED, thereby controlling the temperature of the LED in a preset range, prolonging service life of the LED, and facilitating the user.

Description

technical field [0001] The invention relates to a control electric appliance, in particular to an intelligent temperature control dimming control circuit for an LED flashlight. Background technique [0002] LED (light-emitting diode) flashlight is a kind of flashlight with LED as the light source. LED is welcomed by more and more users because of its advantages such as high brightness, long life, and adjustable light. LED dimming is achieved by changing the current flowing through the LED. Under strong light conditions, the current flowing through the LED is large, and the heat emitted by the LED is high, and natural ventilation cannot be used to quickly dissipate heat. Therefore, LED flashlights are prone to heat when working under strong light conditions. This will result in a shortened service life of the LED, and make the user feel uncomfortable to hold the flashlight due to heat. Contents of the invention [0003] In view of the above-mentioned defects existing in t...

Claims

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Application Information

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IPC IPC(8): H05B37/02
CPCY02B20/40
Inventor 周明杰黄世侠
Owner OCEANS KING LIGHTING SCI&TECH CO LTD