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Patent Searching and Data


Title:
LED LIGHTING SYSTEM, APPARATUS AND DIMMING METHOD
Document Type and Number:
WIPO Patent Application WO/2020/015566
Kind Code:
A1
Abstract:
LED lighting systems, an LED lighting apparatus, and LED dimming method are provided. The LED lighting system includes a rectifying circuit, a filtering circuit, a driving circuit, an LED module, and a demodulating circuit. The demodulating circuit is coupled to the first and second connection terminals, and is configured to obtain a signal feature of the input power signal and then demodulate the signal feature in order to obtain a corresponding dimming message. The demodulating circuit is configured to generate a dimming control signal according to the obtained dimming message and then provide the dimming control signal for the driving circuit, and the driving circuit is configured to adjust its operation of power conversion according to the received dimming control signal, in order to change/adjust the magnitude of the driving power signal in response to the dimming message. The signal feature is a phase-cut angle of the input power signal, and wherein the phase-cut angle is not larger than 90 degrees when the LED module lighting up with a minimum luminance.

Inventors:
XIONG AIMING (CN)
ZHOU LIN (CN)
Application Number:
PCT/CN2019/095421
Publication Date:
January 23, 2020
Filing Date:
July 10, 2019
Export Citation:
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Assignee:
JIAXING SUPER LIGHTING ELECTRIC APPLIANCE CO LTD (CN)
International Classes:
H05B37/02
Foreign References:
CN204350401U2015-05-20
CN103561503A2014-02-05
CN103369802A2013-10-23
US20170223794A12017-08-03
CN105191499A2015-12-23
CN105873269A2016-08-17
US20090160369A12009-06-25
Other References:
See also references of EP 3824695A4
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