Patent · US Active

Headlamp for vehicles

US7665873B2 · kind B2 · utility

3Cited by

5References

5Claims

0Family size

Assignee

Dr. Ing. h.c. F. Porsche AG · DE

Inventors

Stefan Eberhardt · Backnang, DE
Heinz Redlich · Lambach, DE
Burkhard Leutiger · Stuttgart, DE

Key dates

Filing date	Dec 19, 2008
Grant date	Feb 23, 2010
Priority date	—
Expiry date	Dec 19, 2028

Classification

Technology area (CPC F)Mechanical Engineering; Lighting; Heating
CPC primaryF21S41/143
WIPO fieldElectrical machinery, apparatus, energy
WIPO sectorElectrical engineering

Abstract

A headlamp for vehicles has at least one illumination device with one or more light-emitting diodes and with an optical system that is disposed in the light exit area and focuses the light of the light-emitting diodes for a forward lighting of the vehicle. At least one cooling body is provided for dissipating the heat output by the light-emitting diode, and the cooling body contains a number of cooling ribs. To configure the light cone, the cooling body is disposed in the optical axis of the light exit area of the light-emitting diodes between the light-emitting diodes and the optical system, at least the tip of a cooling rib of the cooling body is located at the focal point between the light-emitting diode and the optical system.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.