Flat type multi-digit indicating apparatus

Claim 1

A flat type multi-digit indicating apparatus comprising: a base plate on which a plurality of indicia forming means are arranged in a row in spaced side-by-side relation along the width of said base plate, means for applying voltage to said indicia forming means for effecting multi-digit indication; a channel plate having a flat transparent upper viewing window and a pair of side walls provided in face-to-face relation along upper and lower side lengths of said viewing window, said viewing window and said side walls being integrally formed, said channel plate being provided with open side ends, a pair of strips for blocking the open side ends of said channel plate, each said strip being formed in a flattened U-shape and inlaid between said side walls of said channel plate wherein the legs of each of said U-shape strips ared connected to said side walls. said channel plate and said strips being bonded together thereby to form a cover having said upper viewing window and said side walls, and said cover mounted on a front surface of said base plate and forming an hermetically sealed chamber with said base plate which contains said indicia forming means.