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.:
Date of Patent:
Dec. 28, 2021
Filed:
Apr. 18, 2020
Applicant:
Xiamen Eco Lighting Co. Ltd., Xiamen, CN;
Inventors:
Assignee:
XIAMEN ECO LIGHTING CO. LTD., Fujian, CN;
Attorneys:
Primary Examiner:
Int. Cl.
CPC ...
H05B 45/325 (2020.01); H05B 45/14 (2020.01); H05B 45/54 (2020.01); H05B 45/37 (2020.01); H05B 45/36 (2020.01);
U.S. Cl.
CPC ...
H05B 45/325 (2020.01); H05B 45/14 (2020.01); H05B 45/36 (2020.01); H05B 45/37 (2020.01); H05B 45/54 (2020.01);
Abstract
A light tube apparatus includes a tubular housing, a LED module, an EMI circuit, a rectifier circuit, a filter circuit, a conversion circuit, a safety circuit and a PWM modulation circuit. The safety circuit is connected to a dimming signal from a dimmer for preventing an incorrect connection when the dimmer is connected in wrong direction causing loop breakage. The PWM modulation circuit is connected to the conversion circuit and the safety circuit for performing a pulse width modulation for the dimming signal supplied to the conversion circuit for adjusting a luminance level of the LED module.