Illumination apparatus

Details Illumination apparatus Illumination apparatus

2005-05-10

2005-05-10

Silbermann, Joanne (Department: 3611)

Card, picture, or sign exhibiting

Illuminated sign

Edge illuminated

C040S544000

Reexamination Certificate

active

06889456

ABSTRACT:
An LED light source is received in a groove portion provided in a light guide plate. The groove portion is covered with a base member, and the circumferential edge of the base member is bonded to the light guide plate. Concave portions or convex portions having desired shapes are provided in a surface opposite to a light emission observable surface of the light guide plate so as to form character portions.

REFERENCES:
patent: 3968584 (1976-07-01), Kingston
patent: 4714983 (1987-12-01), Lang
patent: 4903172 (1990-02-01), Schöniger et al.
patent: 4965950 (1990-10-01), Yamada
patent: 5036243 (1991-07-01), Cocks et al.
patent: 5228223 (1993-07-01), Lan
patent: 5641221 (1997-06-01), Schindele et al.
patent: 6076294 (2000-06-01), Durbin
patent: 6308444 (2001-10-01), Ki

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