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 11006496 B1

Date of Patent:

May. 11, 2021

Filed:

Nov. 19, 2019

Led lamp with current-regulated warm dimming

Applicant:

Shanghai Qiangling Electronic Co., Ltd., Shanghai, CN;

Inventors:

Pusong An, Shanghai, CN;

Wenwen Liu, Shanghai, CN;

Ming Chen, Shanghai, CN;

Liu Yi, Shanghai, CN;

Assignee:

Other;

Attorney:

Kraguljac Law Group, LLC

Primary Examiner:

Daniel D Chang

Int. Cl.

CPC ...

H05B 45/3577 (2020.01); F21K 9/278 (2016.01); F21K 9/64 (2016.01); H05B 45/395 (2020.01); H05B 45/20 (2020.01); H05B 45/10 (2020.01); H01L 25/16 (2006.01); F21Y 109/00 (2016.01); F21Y 113/13 (2016.01); F21K 9/232 (2016.01); F21Y 115/10 (2016.01);

U.S. Cl.

CPC ...

H05B 45/3577 (2020.01); F21K 9/278 (2016.08); F21K 9/64 (2016.08); H01L 25/167 (2013.01); H05B 45/10 (2020.01); H05B 45/20 (2020.01); H05B 45/395 (2020.01); F21K 9/232 (2016.08); F21Y 2109/00 (2016.08); F21Y 2113/13 (2016.08); F21Y 2115/10 (2016.08);

Abstract

In one embodiment, a filament for LED filament lamp is presented, that includes a light-transmissive substrate; at least one LED die mounted on the light-transmissive substrate; and at least one current regulator mounted on the light-transmissive substrate, wherein the current regulator is connected in series with the at least one LED. In another embodiment, an LED filament lamp is presented, that includes a dimmable LED driver circuit; a first channel LED array with at least two LED die and a first forward voltage drop; and a second channel LED array with at least one LED dies and at least one current regulator to cause a second forward voltage drop of the second channel LED array to increase as current through the second channel LED array increases, wherein the second channel LED array is connected in parallel with the first channel LED array.

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