G - Physics
09
F
40/47
G09F 13/04 (2006.01)
Patent
CA 1059762
ABSTRACT OF THE DISCLOSURE A display sign is disclosed for displaying printed matter on a backlighted poster or the like. The sign includes a display case defining a first compartment containing a light source, the display case having a front opening for the transmission of light therethrough. A closure panel is adapted to cover the front opening, the closure panel having a central transparent face panel. A concave translucent diffuser panel is located between the face panel and the light source to define a second compartment adapted to contain a poster located therein spaced between the diffuser panel and the face panel. The curvature of the concave diffuser panel extends toward the light source to obviate contact of the poster by the diffuser panel. VELCRO fastening means releasably locate and retain the poster in the second compartment, and vent openings communicate with the second compartment for the circulation of air around the poster. The concave diffuser panel and the vent openings prevent the accumulation of condensation in the second compart- ment and consequent moisture damage to the poster.
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