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:
Sep. 14, 2021
Filed:
Sep. 20, 2019
Jiaxing Super Lighting Electric Appliance Co., Ltd, Jiaxing, CN;
Tao Jiang, Jiaxing, CN;
Weihong Xu, Jiaxing, CN;
Yukihiro Saito, Jiaxing, CN;
Hayato Unagike, Jiaxing, CN;
Aiming Xiong, Jiaxing, CN;
Junfeng Xu, Jiaxing, CN;
Yiching Chen, Taichung, TW;
JIAXING SUPER LIGHTING ELECTRIC APPLIANCE CO., LTD, Zhejiang, CN;
Abstract
An LED light bulb, consisting of: a lamp housing doped with a golden yellow material or its surface coated with a yellow film; a bulb base connected to the lamp housing; a stem connected to the bulb base and located in the lamp housing, the stem comprises a stand extending to the center of the lamp housing; and a single LED filament, disposed in the lamp housing, the LED filament comprising: a light conversion layer, coated on at least two sides of the LED chip and the conductive electrodes, and a portion of each of the conductive electrodes is not coated with the light conversion layer, the light conversion layer has at least one top layer and one base layer, the top layer and the base layer are disposed on the opposing surface of the LED chip, wherein the top layer of the light conversion layer in the conductive section comprises a wavy concave structure with groove, the two adjacent grooves of the wavy concave structure have different width at the positions aligned in the axial direction of the LED filament.