Card – picture – or sign exhibiting – Illuminated sign – Edge illuminated
Patent
1997-09-29
1999-06-29
Trettel, Michael F.
Card, picture, or sign exhibiting
Illuminated sign
Edge illuminated
362 26, 362 31, F21V 704
Patent
active
059158557
ABSTRACT:
A bar light source for an edge light panel and an illumination sign board using the same. The bar light source includes a transparent bar member such as acrylic resin. The transparent bar member has a light-source light supplying portion formed at an end of thereof, a transparent incident light supply surface formed elongately on the front surface thereof, and a light guiding pattern printed on the back surface thereof. An optical cable propagates light from a lamp to the light-source light supplying portion. The light guiding pattern guides light to control uniformly the brightness of the bar light source. Thus, the light is supplied onto the incident end surface of the edge light panel in an area illumination board.
REFERENCES:
patent: 5262928 (1993-11-01), Kashima et al.
patent: 5440464 (1995-08-01), Nowlin et al.
patent: 5499165 (1996-03-01), Holmes
patent: 5521797 (1996-05-01), Kashima et al.
patent: 5555654 (1996-09-01), Hermann
patent: 5572818 (1996-11-01), Churchill
patent: 5709447 (1998-01-01), Murakami et al.
patent: 5791757 (1998-08-01), O'Neil et al.
Kishi Kazuo
Murase Shinzo
Conley Fredrick
Meitaku System Co., Ltd
Trettel Michael F.
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