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The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.

The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.

Patent No.:

US 11035526 B1

PDFFull Text
Date of Patent:
Jun. 15, 2021

Filed:

Oct. 29, 2019

Led tube lamp

Applicant:

Jiaxing Super Lighting Electric Appliance Co., Ltd, Jiaxing, CN;

Inventors:

Aiming Xiong, Jiaxing, CN;

Xintong Liu, Shanghai, CN;

Junren Chen, Jiaxing, CN;

Hechen Hu, Jiaxing, CN;

Hao Zhang, Jiaxing, CN;

Assignee:

Jiaxing Super Lighting Electric Appliance Co., Ltd., Zhejiang, CN;

Attorney:

Muir Patent Law, PLLC

Primary Examiner:

Anh Q Tran

Int. Cl.
CPC ...
F21K 9/278 (2016.01); H05B 45/00 (2020.01); H05B 45/20 (2020.01); H05B 45/37 (2020.01); H05B 45/10 (2020.01); F21V 23/00 (2015.01); F21K 9/275 (2016.01); F21V 23/02 (2006.01); F21V 15/015 (2006.01); F21V 29/70 (2015.01); F21V 3/06 (2018.01); H05K 1/00 (2006.01); F21V 25/02 (2006.01); F21K 9/272 (2016.01); H05B 45/50 (2020.01); H05K 1/18 (2006.01); F21V 29/83 (2015.01); F21Y 103/10 (2016.01); F21Y 115/10 (2016.01); H05K 1/14 (2006.01);
U.S. Cl.
CPC ...
F21K 9/278 (2016.08); F21K 9/272 (2016.08); F21K 9/275 (2016.08); F21V 3/061 (2018.02); F21V 15/015 (2013.01); F21V 23/003 (2013.01); F21V 23/005 (2013.01); F21V 23/023 (2013.01); F21V 25/02 (2013.01); F21V 29/70 (2015.01); H05B 45/00 (2020.01); H05B 45/10 (2020.01); H05B 45/20 (2020.01); H05B 45/37 (2020.01); H05B 45/50 (2020.01); H05K 1/00 (2013.01); F21V 23/02 (2013.01); F21V 29/83 (2015.01); F21Y 2103/10 (2016.08); F21Y 2115/10 (2016.08); H05K 1/14 (2013.01); H05K 1/189 (2013.01); H05K 2201/09027 (2013.01); H05K 2201/10106 (2013.01); Y02B 20/30 (2013.01);
Abstract

An LED tube lamp including an LED module and a power supply module is provided. The LED module is configured to emit light in response to a driving current. The power supply module is electrically connected to the LED module to provide the driving current based on an external driving signal. The power supply module includes a rectifying circuit, a filtering circuit, a driving circuit, a flicker suppression circuit, and an installation detection circuit. The flicker suppression circuit is electrically connected to the LED module, and configured to control a conduction state of a current path passing through the LED module. The installation detection circuit is electrically connected to the flicker suppression circuit, and configured to detect whether a foreign external impedance is electrically connected to the LED tube lamp. When the foreign external impedance is detected, the installation detection circuit disables the flicker suppression circuit to restrict current from flowing through the current path. When the foreign external impedance is not detected, the installation detection circuit enables the flicker suppression circuit to smooth the driving current by controlling the conduction state based on the external driving signal.

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