Series LED (Light Emitting Diode) light source with by-pass protection

A LED light source and bypass protection technology, applied in the field of series LED light sources, can solve the problems of reducing the reliability of LED light sources, open circuits, etc.

Inactive Publication Date: 2011-08-03
ZHONGSHAN XINGHAN TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] LED light sources are usually applied to lighting systems in series, but the existing series LED light sources have obvious defects. Since several LEDs are connected in simple series, when one of the LEDs is damaged and disconnected, the entire circuit appears open. , other LEDs cannot work normally, which greatly reduces the reliability of the LED light source

Method used

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  • Series LED (Light Emitting Diode) light source with by-pass protection
  • Series LED (Light Emitting Diode) light source with by-pass protection
  • Series LED (Light Emitting Diode) light source with by-pass protection

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Embodiment Construction

[0019] Below in conjunction with accompanying drawing, the present invention is described in detail:

[0020] This embodiment is an example in which a single LED is connected in parallel with a Zener diode.

[0021] Such as figure 1 As shown, the series LED light source of this embodiment includes several LEDs connected in series, each LED is connected in parallel with a zener diode, the zener diode Z1 is connected in parallel with LED D1, the zener diode Z2 is connected in parallel with LED D2, and the zener diode Zn in parallel with LED Dn...and so on. The anode of the Zener diode is connected to the cathode of the LED, the cathode of the Zener diode is connected to the anode of the LED, and the forward voltage of the Zener diode is greater than the forward voltage of the LED.

[0022] Each LED in the series LED circuit is connected in parallel with a Zener diode, and the forward voltage of the Zener diode is greater than the forward voltage of the LED, then the Zener diod...

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Abstract

The invention discloses a series LED (Light Emitting Diode) light source with by-pass protection, comprising a plurality of LED groups in series, wherein each LED group is connected with a Zener diode in parallel; the positive electrode of the Zener diode is connected with the positive electrode of the LED group; the negative electrode of the Zener diode is connected with the negative electrode of the LED group; the forward voltage of the Zener diode is greater than t that of the LED group. Under the circumstance that a part of LEDs is damaged, the Zener diode connected with the LED group in parallel is conducted so that the stability of the whole series LED circuit can be guaranteed.

Description

technical field [0001] The invention relates to a protection circuit of a series LED light source, in particular to a series LED light source with bypass protection. Background technique [0002] Due to the advantages of high luminous efficiency, low energy consumption, and long life, LED light sources have been more and more widely used, and are gradually replacing traditional light sources. [0003] LED light sources are usually applied to lighting systems in series, but the existing series LED light sources have obvious defects. Since several LEDs are connected in simple series, when one of the LEDs is damaged and disconnected, the entire circuit appears open. , other LEDs cannot work normally, which greatly reduces the reliability of the LED light source. Contents of the invention [0004] The purpose of the present invention is to provide a series LED light source with bypass protection and improve the reliability of the series LED light source. [0005] The purpose...

Claims

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Application Information

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IPC IPC(8): F21S2/00F21V23/00H02H9/00F21Y101/02F21K9/00F21Y115/10
Inventor 陈纲谭亚南
Owner ZHONGSHAN XINGHAN TECH
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