Title:
LIGHT ADJUSTMENT AND COLOUR TEMPERATURE ADJUSTMENT CIRCUIT FOR LED LIGHT BAR
Document Type and Number:
WIPO Patent Application WO/2018/068485
Kind Code:
A1
Abstract:
Disclosed is a light adjustment and colour temperature adjustment circuit for an LED light bar, comprising an external light adjustable LED driving power source (1), a first colour temperature LED series circuit (2), a second colour temperature LED series circuit (3), a first current-limiting resistor (4) and a second current-limiting resistor (5). A positive electrode of the driving power source is respectively connected to a positive electrode terminal of the first colour temperature LED series circuit and a positive electrode terminal of the second colour temperature LED series circuit. A negative electrode terminal of the first colour temperature LED series circuit is connected to a negative electrode of the driving power source via the first current-limiting resistor; and a negative electrode terminal of the second colour temperature LED series circuit is connected to the negative electrode of the driving power source via the second current-limiting resistor. The number of LEDs in the first colour temperature LED series circuit is not equal to the number of LEDs in the second colour temperature LED series circuit. When the driving power source is adjusted to the maximum brightness, a current flowing through the first colour temperature LED series circuit is equal to a current flowing through the second colour temperature LED series circuit, thereby integrating the function of light adjustment and colour temperature adjustment in a circuit only having the light adjustment function.
Inventors:
SIT TAN LAM (CN)
Application Number:
PCT/CN2017/079955
Publication Date:
April 19, 2018
Filing Date:
April 10, 2017
Export Citation:
Assignee:
SHENZHEN DILUX LIGHTING TECH LIMITED (CN)
International Classes:
H05B44/00
Foreign References:
| US20140361697A1 | 2014-12-11 | |||
| CN106332369A | 2017-01-11 | |||
| CN206118121U | 2017-04-19 | |||
| CN103843458A | 2014-06-04 | |||
| CN104507200A | 2015-04-08 | |||
| CN205160868U | 2016-04-13 |
Download PDF: