Abstract: A modular digit carrier for a sign system having a sign face upon which a plurality of digits can be secured. In a preferred embodiment, the digit carrier includes a rear surface and a front surface, and outwardly extending flanges for securing the digit carrier with its rear surface adjacent the sign face. The digit carrier further preferably includes a substantially frame-like body portion which defines a support channel and which provides access to an interchangeable digit supported by the carrier from the front surface of the digit carrier. The support channel slidingly supports the indicia digit and includes an open slot through which the digit can be inserted and removed in a direction which is oriented so as to allow the insertion and removal of a digit from the carrier without removing the carrier from the sign face. The digit carrier can also be configured to allow backlighting of the indicia digit supported.

Abstract: In accordance with one aspect of the present invention, there is provided an improved display sign system including a sign face and a plurality of vertically spaced longitudinal ribs defining tracks located on the sign face. The longitudinal tracks are designed to support indicia elements adjacent the sign face. In a preferred embodiment, the sign system further includes two side frame members disposed on opposite lateral sides of the sign face, each including a curved surface which is substantially flush with the sign face at its lateral side edge. The curved surface extends outwardly and away from the lateral side of the sign face to provide a guide for inserting indicia elements within a longitudinal track from the front side edges of the sign.

Abstract: The sign includes a generally rectangular, pan-shaped opaque back, with its concavity presented forwards a generally rectangular, pan-shaped translucent front, frame or shell with its concavity presented rearwards, and means for fastening the back to the shell. The forward part of the shell is provided with at least one generally rectangular port bordered on at least two opposing sides with a ledge. Preferably lighting means is mounted on the back and any of several translucent sign faces are mounted across the ledges to span the port. Typical sign faces are: a translucent clock face with a clock mechanism behind and hands in front and a covering crystal that is transparent; a sandwiching of a translucent light diffuser, a color transparency and a clear cover; a translucent panel with rows of parallel grooves for removably mounting the characters for changeable messages; and translucent panels with messages or other advertising applied directly thereto.