Abstract: A lamp assembly includes a body, support structure adjacent the body, and a socket for carrying a bulb, the socket being connected to the support structure. An illumination light source is adapted to illuminate the body by directing light into the interior of the body. The body is comprised of a light transmissive material.

Abstract: Apparatus for lighting a lower tread of a stairway having the lower tread relatively parallel to and spaced a gap from an upper tread. The lighting apparatus includes illuminating means. A housing is positioned underneath the upper tread. The housing includes an open front face generally perpendicular to and facing a front portion of the lower tread. The housing defines an interior region adapted to contain the illuminating means and includes a wall having an opening sized to receive therethrough the illuminating means. The lighting apparatus includes a louver angularly overhanging the open front face of the housing so that light diffused from the illuminating means is directed downwardly to illuminate the lower tread. The louver includes a tab removably insertable into a pocket partially defined by a surface of the upper tread and a generally plane wall of the housing. The tab secures the louver in the overhanging position after the tab is installed in the pocket.