Patent ID: 6462720
Filing Date: 2002-10-08
Classification: A63F,F41J

Abstract:
A light-emitting display device comprising:a forward transparent plate having a light scattering portion for a predetermined pattern relative to a surface direction thereof, a backward transparent plate having a light scattering portion for a pattern relative to a surface direction thereof and disposed at the back of the forward transparent plate in the surface direction of the forward transparent plate, the pattern of the light scattering portion of the backward transparent plate being different from the pattern of the light scattering portion of the forward transparent plate, a light source for the forward transparent plate for supplying incidence of light into the forward transparent plate from an end surface of the forward transparent plate, a light source for the backward transparent plate for supplying incidence of light into the backward transparent plate from an end surface of the backward transparent plate, and switching means for switching emitting/quenching of the light source for the backward transparent plate, wherein at least one of the light incident end surfaces of the forward transparent plate and the light incident end surfaces of the backward transparent plate is positioned in a staggered fashion relative to an adjacent end surface of the other transparent plate.