Patent ID: 8210941

Claim:
A display device comprising: a light-guiding plate and a base plate defining a medium moving space therebetween, the light-guiding plate being deposed in front of the base plate in a depth direction, a dimension of the medium moving space between the light-guiding plate and the base plate being less than twice thickness of a medium that moves in the medium moving space; a light source that is disposed on a side of the light-guiding plate so that light emitted from the light source enters the side of the light-guiding plate; a reflecting section that is formed in the light-guiding plate, and that reflects the light from the light source toward the medium moving space; a plurality of light-guiding holes that are formed in the base plate, and through which light from the light-guiding plate passes; a detection device that is disposed behind the base plate in the depth direction, and that detects light though the plurality of light-guiding holes; a liquid crystal display that is disposed in front of the light-guiding plate in the depth direction; a reflecting material that is disposed on a front surface of the base plate in the depth direction, and that reflects the light from the light-guiding plate; and a plurality of communication holes that are provided in the reflecting material, and that each communicates with the light-guiding holes in the base plate.