LED FILAMENT WITH ADJUSTABLE COLOUR TEMPERATURE, PREPARATION METHOD AND LED LIGHT BULB

WIPO Patent Application WO/2018/157428

A1

Disclosed are an LED filament (100) with an adjustable colour temperature, a preparation method and an LED light bulb (300), which belong to the field of LED illumination. The LED filament (100) with an adjustable colour temperature comprises a substrate (102), a first LED light-emitting array (110) and a second LED light-emitting array (120); the LED light bulb (300) comprises an adjustable driving power source (200); and by respectively coating the first LED light-emitting array (110) and the second LED light-emitting array (120) with different fluorescent colloids (105, 107) with different proportions of fluorescent powders mixed therein, and by adjusting the colour temperatures of the first LED light-emitting array (110) and the second LED light-emitting array (120) by means of the adjustable driving power source (200), i.e. by adjusting the light-emitting brightness of the first LED light-emitting array (110) and that of the second LED light-emitting array (120), the LED filament (100) with an adjustable colour temperature can present various different colours, thereby improving the adaptability and ornamental value of the LED light bulb, and enhancing the user experience.

ZHONG YUN (CN)
PENG SHENGQIN (CN)
WANG TAO (CN)
MA JUN (CN)
ZHANG CHUANLIANG (CN)
XIE YISHANG (CN)

PCT/CN2017/078541

September 07, 2018

March 29, 2017

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SICHUAN WUXIN ENERGY TECH CO LTD (CN)

F21S10/02; H05B44/00; F21V15/02; F21V23/00; F21V23/06

CN106678730A	2017-05-17
TW201321672A	2013-06-01
CN102720976A	2012-10-10
CN105972462A	2016-09-28
CN106190124A	2016-12-07
US20110080108A1	2011-04-07

CHOFN INTELLECTUAL PROPERTY (CN)

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