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:
Nov. 12, 2019
Filed:
May. 18, 2017
Xiamen Eco Lighting Co. Ltd., Xiamen, CN;
Liangliang Cao, Xiamen, CN;
Xiaojuan Huang, Xiamen, CN;
Maojin Zeng, Xiamen, CN;
Lianwei Zhang, Xiamen, CN;
Wanzhen Li, Xiamen, CN;
Lilei Su, Xiamen, CN;
Mingyan Fu, Xiamen, CN;
Xiaobo Chen, Xiamen, CN;
XIAMEN ECO LIGHTING CO. LTD., Xiamen, CN;
Abstract
Disclosed herein is a filament bulb with uniform luminance, which decreases the dark area at the top portion of the filament bulb and increases the luminance efficiency, and includes the following components, a bulb casing, a filament unit, a reflector ring, a driver, and a bulb cap. The bulb casing is connected with the bulb cap, and together, the two define an interior space. The driver is disposed in the bulb cap, whereas the filament unit is disposed within the interior space and the bottom of the filament unit is electrically connected with the driver. The reflector ring surrounds the exterior of the bottom of the filament unit, and is configured to reflect the light emitted from the filament unit to decrease the dark area at the top portion of the filament bulb.