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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 11073250 B1

PDFFull Text
Date of Patent:
Jul. 27, 2021

Filed:

Jan. 11, 2020

Led tube lamp comprising a thyristor device and a noise suppressing circuit

Applicant:

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

Inventors:

Aiming Xiong, Jiaxing, CN;

Xintong Liu, Shanghai, CN;

Xiaojia Wu, Jinhua, CN;

Assignee:

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

Attorney:

Simon Kuang Lu

Primary Examiner:

Anh Q Tran

Int. Cl.
CPC ...
F21K 9/275 (2016.01); F21K 9/278 (2016.01); F21V 3/10 (2018.01); F21V 3/06 (2018.01); F21V 15/015 (2006.01); F21V 17/10 (2006.01); F21V 23/00 (2015.01); F21V 23/02 (2006.01); F21V 29/83 (2015.01); B23K 3/047 (2006.01); B23K 1/00 (2006.01); H05B 45/37 (2020.01); H05B 45/50 (2020.01); C03C 21/00 (2006.01); F21V 29/70 (2015.01); F21Y 115/10 (2016.01); B23K 101/42 (2006.01);
U.S. Cl.
CPC ...
F21K 9/278 (2016.08); B23K 1/0016 (2013.01); B23K 3/047 (2013.01); F21K 9/275 (2016.08); F21V 3/061 (2018.02); F21V 3/10 (2018.02); F21V 15/015 (2013.01); F21V 17/101 (2013.01); F21V 23/006 (2013.01); F21V 23/009 (2013.01); F21V 23/02 (2013.01); F21V 29/83 (2015.01); H05B 45/37 (2020.01); H05B 45/50 (2020.01); B23K 2101/42 (2018.08); C03C 21/002 (2013.01); F21V 29/70 (2015.01); F21Y 2115/10 (2016.08); Y02B 20/30 (2013.01);
Abstract

An LED tube lamp comprises an LED module for emitting light; and a ballast interface circuit coupled to the LED module and comprising a thyristor device configured to determine whether an input external driving signal is a high frequency or high voltage signal. When the external driving signal is determined to be a high frequency or high voltage signal, the ballast interface circuit causes current conduction in the LED module for emitting light, and specifically the thyristor device is configured to conduct current upon the external driving signal being input. The ballast interface circuit further comprises a transistor, an inductor, and a resistor connected to each other; and the inductor is coupled between a terminal of the thyristor device and the LED module. Upon the thyristor device being turned on a current flowing through the inductor and the transistor maintains the conduction state of the thyristor device.

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