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A led module as a light source for a lighting device

A technology of LED modules and lighting devices, which is applied in the field of LED lighting, and can solve the problems of LED modules not conducting, flickering, and low input voltage not reaching the conduction voltage of LED modules, etc.

Inactive Publication Date: 2017-03-29
SICHUAN SUNFOR LIGHT
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0018] The disadvantage of the comparison file is that when the direction of the input current changes, the LED module cannot be turned on due to the low input voltage and cannot reach the required conduction voltage of the LED module, which reduces the luminous efficiency and causes obvious flickering phenomenon.

Method used

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  • A led module as a light source for a lighting device
  • A led module as a light source for a lighting device
  • A led module as a light source for a lighting device

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Embodiment Construction

[0100] The technical solutions of the various embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings. Apparently, the described embodiments are only some of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0101] In the existing AC rectification circuit for driving LED modules, since the AC power fluctuates periodically, and the LED module has a certain turn-on voltage, when the current loop changes direction, the voltage that can be provided to the external LED module is less than the turn-on voltage, so that the LED The luminous efficiency of the module is low; further, after being rectified by the diode in the AC rectification circuit, the voltage value output to the LED module fluc...

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Abstract

The invention discloses an LED module serving as a light source of a lighting device. The LED module comprises a driving circuit; the driving circuit comprises a first diode, a second diode, a third diode, a fourth diode, a fifth diode, a sixth diode, a first capacitor, a second capacitor, a third capacitor and a fourth capacitor; the driving circuit further comprises an overvoltage protection branch; the output end of the driving circuit is connected with the input end of the overvoltage protection branch; the overvoltage protection branch comprises a first resistor, a second resistor, a second resistor, a third resistor, a fourth resistor, a fifth resistor, a first voltage-regulator diode, a second voltage-regulator diode, an NPN triode and a field-effect triode. Through the application of the invention, the output voltage stability can be improved, and the luminous efficiency of the LED module is improved.

Description

[0001] The present invention is a divisional application of the original application number 201310037178.9, the original application date is January 31, 2013, and the original invention title is AC rectification circuit and AC rectification method for driving LED modules. technical field [0002] The invention relates to the field of LED lighting, in particular to an LED module used as a light source of a lighting device. Background technique [0003] Light Emitting Diode (LED, Light Emitting Diode) module, as a new high-efficiency light source, is widely used in commercial, industrial and household lighting due to its advantages of long life, low energy consumption, energy saving and environmental protection. [0004] When the LED module is used as the light source of the lighting device, the life of the lighting device not only depends on the luminous performance of the LED, but also depends on the stability of the driving circuit components that provide the working voltage...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H05B37/02
Inventor 李东明封正勇龙文涛杨冕
Owner SICHUAN SUNFOR LIGHT