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Plate

  • US 20020178627A1
  • Filed: 05/31/2002
  • Published: 12/05/2002
  • Est. Priority Date: 06/01/2001
  • Status: Active Grant
First Claim
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1. A plate comprising a casing including an at least substantially flat first wall forming a rear wall and an edge portion extending around said first wall and projecting forwardly therefrom and defining a light transmission opening for light to pass therethrough, a flat symbol carrier which extends parallel to said first wall of the casing with at least one symbol thereon, the symbol carrier having regions of differing transparency to represent the at least one symbol thereon, an electrically activatable light film between said first wall and said symbol carrier, said light film being operable for providing illumination at least through the regions of relatively higher transparency of the symbol carrier from the rear thereof, a retroreflective film in front of the electrically activatable light film and in parallel relationship therewith, the retroreflective film extending at least over considerable portions of the area of the light transmission opening and being at least partially transparent for light coming from the rear of the retroreflective film from the light film and being retroreflective for light passing from the outside through the light transmission opening and impinging on said retroreflective film, an at least region-wise transparent light cover closing the light transmission opening, and a rough layer between the inward side of the light cover and the surface theretowards of said retroreflective film.

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