Abstract: A construction member includes a square frame. The frame is formed of a front frame and a back frame. A plate is secured to the inner side of an edge of the front frame. A glass tube constituting a visually perceptible part in the form of a letter or a pattern is secured to the back surface of the plate by an adhesive consisting of thermosetting resin having self-extinguish property. An electrode tube is formed at one end of the glass tube and the other end thereof. The glass tube encloses inert gas such as neon gas. A printed layer is formed on one main surface of the plate as another visually perceptible part by silk printing method or the like. The frame accommodates a reflective panel formed of stainless steel plate by spacing the reflective panel at a determined interval from the plate. A transformer for illuminating the glass tube is mounted on the back surface of the reflective panel.

Abstract: A construction member includes an external frame portion made of polycarbonate resin with connection holes formed along its periphery. The front face of the external frame portion has attached thereto a freely removable panel made of, for example, a first plate of transparent glass having a concave portion and a flat second plate. Between the first plate and the second plate there is formed a continuous hollow portion, which, as a figure plate, contains a letter, pattern, or the like. The continuous hollow portion is charged with, for example, neon gas and has attached thereto two electrode tubes. The external frame portion has formed therein, at a distance from the panel, a partitioning member containing a reflective sheet freely removably attached to the surface thereof formed, for example, of aluminum foil or synthetic resin film. The continuous hollow portion is luminous as a voltage is applied to two electrode tubes and the image emitted is reflected by the reflective sheet.