Abstract: A light fixture mounting device is disclosed wherein a service outlet box has a mounting adaptor with light fixture suspension means providing temporary suspension of a light fixture during installation and connection of the electrical wiring and subsequent maintenance.

Abstract: A concealed, spring-loaded, slide hinge for mounting the light transmitting door to a luminaire housing. The slide hinge includes a hinge-slide member on each side of the door frame adjacent one end of the door and a hinge arm mounted on each of the slide members for sliding movement with respect thereto. A coil spring interconnects the hinge arm to the adjacent door frame end and urges the arm toward that end. Each hinge arm also carries a hinge pin thereon which pivotally mounts the slide hinge to the housing. When the door is opened, the spring urges the door away from the housing to permit the door to swing freely about the bottom edge of the housing while the pivotal connection is maintained.

Abstract: A high beam, low brightness luminaire including an inverted dish-shaped housing of a frustoconical configuration terminating in an annular peripheral edge at its larger end. A generally frustoconical translucent refractor is secured to the annular peripheral edge of the housing at its larger end and an inwardly directed annular flange on the smaller end provides the sole support for a bowl-shaped, transparent, prismatic refractor which hangs therefrom. The normally open bottom of the bowl-shaped refractor may be closed off by a disc-shaped translucent diffusing refractor to complete the sealed optical system.