Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

LED flow equalizing control circuit, LED driver module and navigation aiding light

A drive module, flow control technology, applied in the field of lighting, can solve problems such as reduced efficiency and different tube pressure drops

Inactive Publication Date: 2010-07-14
OCEANS KING LIGHTING SCI&TECH CO LTD +1
View PDF6 Cites 29 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

If you use a series circuit or a series-parallel connection, you need to boost the voltage, resulting in a decrease in efficiency; if you use a parallel circuit, you must ensure that the current flowing through the LEDs of each LED branch is the same, but in practical applications, it is found that with LEDs are used for a long time, and the tube voltage drop of LEDs in each LED branch begins to be different gradually, resulting in that the current of each LED branch is not nearly equal.

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • LED flow equalizing control circuit, LED driver module and navigation aiding light
  • LED flow equalizing control circuit, LED driver module and navigation aiding light
  • LED flow equalizing control circuit, LED driver module and navigation aiding light

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0012] Aiming at the defect in the prior art that when multiple LED branches are connected in parallel, the current of each LED branch is not equal, a LED current sharing control circuit is provided, which can sample the current of each LED branch, and according to the sampled The current of each LED branch adjusts the current of each LED branch uniformly, so that the LED branch emits light evenly, and the current on each branch is nearly equal.

[0013] The basic technical solution of the LED current sharing control circuit in the embodiment of the present invention is: among multiple LED branches connected in parallel, each LED branch is provided with an LED current sharing control circuit. The LED current sharing control circuit includes a switching tube, a sampling resistor, a first resistor, a second resistor, a third resistor, a fourth resistor, a fifth resistor, a current sharing resistor and a first three-terminal adjustable shunt reference source, and the switching tub...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention relates to an LED flow equalizing control circuit, an LED driver module and a navigation aiding light. The LED driver module comprises a plurality of LED branches connected in parallel, each LED branch comprises an LED flow equalizing control circuit, the LED flow equalizing control circuit is used for sampling the current of each LED branch and rectifying the current of each LED branch to be uniform according to the sampled current of each LED branch. The implementation of the LED flow equalizing control circuit, the LED driver module and the navigation aiding light can dynamically regulate the currents of multiple LED branches, so that the current of each LED branch can be maintained uniform.

Description

technical field [0001] The invention relates to the technical field of illumination, and more specifically, relates to an LED current sharing control circuit, an LED driving module and a navigation light. Background technique [0002] With the progress of science and technology and the implementation of energy saving and environmental protection, LED has been widely used in signal indication, especially the application of navigation lights, but because LED is a voltage type device, a small voltage change will cause a large current change, and The luminous brightness has a great relationship with the passing current. The change of the current will cause the change of the luminance. Therefore, when using it as a surface light source, the uniformity of LED light emission must be considered, that is, the current passing through each LED must be nearly equal. [0003] At present, when LEDs are used as surface light sources, the general circuit structure is series, parallel, and s...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
IPC IPC(8): H05B37/02F21S8/00F21V23/00F21W111/00F21Y101/02
Inventor 周明杰谭威陈永伦
Owner OCEANS KING LIGHTING SCI&TECH CO LTD
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com