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:
Feb. 18, 2020
Filed:
Jun. 19, 2018
Signify Holding B.v., Eindhoven, NL;
Jian Xue, Shanghai, CN;
Chengyong Lei, Shanghai, CN;
SIGNIFY HOLDING B.V., Eindhoven, NL;
Abstract
A heat dissipation structure () for a lighting device () is provided. The heat dissipation structure comprises at least two separate heat sinks () for a light source () and a driver () for the light source, respectively. Each heat sink comprises fins () and a wall arrangement (). The at least two separate heat sinks are disposed along an axial direction of the lighting device. The fins of the at least two separate heat sinks are enclosed by the wall arrangements to form a chimney structure () arranged along (such as substantially parallel with) the axial direction of the lighting device. Further, the chimney structure comprises at least two sub-chimney structures () arranged fluidly in parallel. The sub-chimney structures provide (accelerate) two air flows in parallel within the chimney structure, whereby cool air flows through the two sub-chimney structures simultaneously, which reduces heat concatenation.