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Light-emitting diode string lamp drive system

A technology of light-emitting diode lamps and light-emitting diodes, which is applied in the field of light string drive systems, can solve problems such as high defect rate, complicated control command writing, bad light-emitting diode light strings, etc., and achieve cost-saving effects

Active Publication Date: 2017-01-11
SEMISILICON TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Since each control command can only drive a light-emitting diode with a certain address code, when the light-emitting diode light string has a large number of light-emitting diodes or has a large number of address codes, it will make the writing of the control command seem difficult. It is more complicated, and further, when the LEDs are assembled, if the LEDs with a certain address code are installed in the wrong order, the entire group of LED strings will be regarded as defective. If each LED string is connected with The more the number of addressable LEDs, the higher the defect rate

Method used

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  • Light-emitting diode string lamp drive system
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  • Light-emitting diode string lamp drive system

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Embodiment Construction

[0063] For the detailed description and technical content of the present invention, please refer to the following detailed description and accompanying drawings as follows, and the accompanying drawings and detailed description are for illustration purposes only, and are not intended to limit the present invention.

[0064] Please refer to Figure 1 to Figure 4 , which is the block and circuit diagram of the LED lamp string driving system of the present invention. An LED lamp string driving system 10 includes a plurality of LED lamp strings 20 and a plurality of LED driving devices 30 and is applied to a plurality of AC power supply units 40. The LED lamp string 20 includes a plurality of LED lamps 202, which The LEDs 202 are connected in series and each of the LEDs 202 has a corresponding address code.

[0065] The LED driving devices 30 are electrically connected to the LED strings 20 . The LED driving device 30 includes a switch unit 102 , a control unit 104 , a voltage l...

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Abstract

The invention discloses a light-emitting diode string lamp drive system which comprises a plurality of light-emitting diode drive devices and a plurality of light-emitting diode string lamps. Each light-emitting diode string lamp comprises a plurality of light-emitting diodes. Each light-emitting diode drive device comprises a switch unit, a control unit and a voltage level generating unit. The anode of the last light-emitting diode of the light-emitting diode string lamp which is connected with the first light-emitting diode drive device is connected to the control unit of the second light-emitting diode drive device.

Description

technical field [0001] The invention relates to a lamp string driving system, in particular to a LED lamp string driving system. Background technique [0002] At present, the LED light string system includes LED driving devices and LED light strings. Each LED light string has a plurality of LEDs connected in series. Each light-emitting diode connected to the diode light string has an address code, wherein the number of address codes of the light-emitting diodes electrically connected to each light string can be the same as or less than the number of light-emitting diodes, such as when each light string When the number of light-emitting diodes is 24 lights, the addressing code of each light-emitting diode can be 1 to 24 or 1 to 8. When the light-emitting operation is to be performed, the light-emitting diode drive device will issue a control command to drive The light-emitting diode that interprets the control command performs light-emitting and blinking. [0003] Since eac...

Claims

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Application Information

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IPC IPC(8): F21S4/00F21V23/00F21Y101/02
CPCF21V23/003
Inventor 彭文琦
Owner SEMISILICON TECH