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. 18, 2012
Filed:
Apr. 14, 2010
Thomas Froehlich, Reutlingen, DE;
Jochen Mehl, Holzgerlingen, DE;
Christian Johann, Reutlingen, DE;
Matthias Roder, Reutlingen, DE;
Thomas Froehlich, Reutlingen, DE;
Jochen Mehl, Holzgerlingen, DE;
Christian Johann, Reutlingen, DE;
Matthias Roder, Reutlingen, DE;
Abstract
The invention relates to a lighting device for a motor vehicle. Said lighting device comprises a light source () for emitting electromagnetic radiation, in particular light which is visible to the human eye, and a reflector () for focusing the emitted light. The light source () is fastened on the reflector () at least indirectly in a defined position relative to a reflective surface of said reflector. In order firstly to make heat transfer from the reflector () to the light source () more difficult and secondly to enable EMC shielding by virtue of an electrical contact between the light source () and the reflector (), the invention proposes that a material () with poor thermal conductivity is arranged between the reflector () and the light source () for thermally insulating the light source () from the reflector (). Preferably, the material () has a thermal conductivity λ of less than 2 W/mK and a relative permittivity (ε) of greater than 1.