Light emiting diode (LED) tube lamp capable of adapting to different driving environments

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United States of America Patent

PATENT NO 9867239
APP PUB NO 20160270166A1
SERIAL NO

15086481

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Abstract

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An LED tube lamp includes a lamp tube having a first pin and a second pin for receiving an external driving signal; a first rectifying circuit for rectifying the external driving signal to produce a rectified signal; a filtering circuit for filtering the rectified signal to produce a filtered signal; an LED lighting module configured to receive the filtered signal for emitting light; and a ballast detection circuit coupled to the first pin or the second pin, and coupled to the first rectifying circuit. The ballast detection circuit includes a switching circuit, and is for detecting whether the external driving signal comes from a ballast. And the ballast detection circuit is configured to control, based on a result of the detection, current conduction or cutoff of the switching circuit, to determine whether to conduct current by the switching circuit, which current bypasses a circuit path other than the switching circuit.

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Patent Owner(s)

Patent OwnerAddress
JIAXING SUPER LIGHTING ELECTRIC APPLIANCE CO LTDNO 1288 JIACHUANG RD XUIZHOU AREA JIAXING ZHEJIANG

International Classification(s)

Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Hu, Hechen Jiaxing, CN 18 646
Xiong, Aiming Jiaxing, CN 171 2523
Ye, Qifeng Jiaxing, CN 35 1136

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