Dennison, Schultz & Dougherty
Planar light-emitting display panel
Disclosed is a planar light-emitting display panel device of the edge-lighting type used for demonstration of an image of painting, photograph or commercial product for the purpose of decoration or advertisement, in which the image-bearing transparency can be easily replaced with another. The device comprises, as an assembly: (a) a rectangular planar light emitter having a rectangular light-conductive board; (b) at least one elongated light source held in contact with one of the edge surfaces of the light-conductive board; (c) a rectangular frame consisting of four frame branches, three of which are rigidly connected together to hold the planar light emitter and the elongated light source therein and the fourth of which is demountable, each having an inversely L-shaped cross section consisting of a top flat and a side flat so as to define a grooved space by the lower surface of the top flat and the upper surface of the planar light emitter; (d) an image-bearing transparency; and (e) a folder consisting of two flaps made from a transparent plastic sheet, in which the image-bearing transparency is held by the folder between the two flaps and the transparency-holding folder is inserted into the grooved spaces in a withdrawable fashion.
Ichiyo-sha Co., Ltd.
G
G02B
inventional
Masashi Kiyoshi
Saito Sato