Abstract: A sign plate for an illuminated sign having a light source includes an opaque layer on one of its faces which layer is broken by zones corresponding to a configuration of text or figures to be communicated, the zones being covered with fluorescent material, and the surface of the fluorescent material facing the viewer and opposite the light source being covered with a light reflective layer.
Type:
Grant
Filed:
December 21, 1989
Date of Patent:
April 23, 1991
Assignee:
Rite Lite Partnership
Inventors:
Gudni Erlendsson, Thorgeir D. Hjaltason