Plate
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United States of America Patent
Stats
-
Mar 2, 2004
Grant Date -
Dec 5, 2002
app pub date -
May 31, 2002
filing date -
Jun 1, 2001
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A plate such as a motor vehicle licence plate comprises a casing which includes a flat rear wall surrounded by a forwardly projecting edge defining a light transmission opening, through which a flat symbol carrier extending parallel to the rear wall of the casing is visible. The symbol carrier has regions of differing transparency to represent symbols thereon. An electrically activatable light film between the rear wall and the symbol carrier shines light through the symbol carrier from the rear. To provide retroreflective properties, arranged in front of the light film and parallel thereto is a film which extends at least over considerable parts of the area of the light transmission opening and which is at least partially transparent for the light from the rear and which is retroreflective for light impinging thereon from the exterior. A light cover which is transparent at least in region-wise manner closes the light transmission opening. A rough layer is provided between the inward surface of the light cover and the surface that is theretowards of the retroreflective film.
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