Illumination – Supported by vehicle structure – Light modifier
Reexamination Certificate
2001-09-28
2003-10-28
Sember, Thomas M. (Department: 2875)
Illumination
Supported by vehicle structure
Light modifier
C362S518000, C362S297000, C362S346000
Reexamination Certificate
active
06637921
ABSTRACT:
BACKGROUND OF THE INVENTION
Vehicle lamp assemblies generally include a light source, one or more reflectors for directing the light beam, and a lamp housing. Producing a standard LED (light emitting diode) bulb for automotive use has always been a goal of the lighting industry. However, multiple LED light sources are usually needed to make a standard beam pattern, which makes the application of the LED rather specific.
In addition, direct viewing of an LED lamp can be uncomfortable for the viewer. The light needs to be well spread, yet still sufficiently be directed or focused at the subject area. Through the appropriate use of reflectors, this can be accomplished. In automotive applications, however, the general reluctancy of the automobile manufacturer to cut holes in the vehicle hull to support a lamp assembly is often a formidable obstacle to allowing flexibility in designing suitable LED lamp assemblies that meet these objectives.
It is therefore an object of the present invention to provide an LED assembly that is compact and particularly suitable for automotive applications.
It is a further object of the present invention to provide an LED assembly interchangable with a lens optic to form multiple beam patterns.
It is yet a further object of the present invention to provide an LED assembly that requires only one LED.
It is still another object of the present invention to provide an LED light source with an interchangeable lens optic for automotive applications where the light is well spread and the assembly remains sufficiently thin to be mounted without forming holes in the vehicle hull.
SUMMARY OF THE INVENTION
The problems of the prior art have been overcome by the present invention, which provides an LED lamp assembly particularly adapted for automotive applications that utilizes one or more standard replaceable LED bulbs with changeable optics to make multiple beam patterns. Preferably the optic is molded and easily replaced. An electric module is mounted directly under the LED to facilitate the electrical connection and provide good thermal contact. The LED light source(s) and interchangeable optic are positioned and sealed in the base of a main reflector or the vehicle hull by means well known to those skilled in the art. In one embodiment, a cylinder is positioned around the LED's in order to protect the light source.
REFERENCES:
patent: 4013915 (1977-03-01), Dufft
patent: 4965488 (1990-10-01), Hihi
patent: 5323300 (1994-06-01), McCrary
patent: 5769532 (1998-06-01), Sasaki
patent: 6296376 (2001-10-01), Kondo et al.
patent: 6488392 (2002-12-01), Lu
Meyer William E.
Osram Sylvania Inc.
Sember Thomas M.
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