Abstract: An explosion-proof fluorescent light fixture for use in hazardous environments, comprising a pair of fluorescent lamps each shielded by a protective globe and electrical contact containing end connectors at the opposed ends of the lamps and globes. The end connectors and globes form integral one-piece self-contained units and, in case of breakage or a globe, the entire unit of globe and end connectors can be easily detached and replaced simply the unloosening or re-fastening of bolts which normally secure the end connectors to the light fixture. The end connectors are provided with detachable end caps enabling a burned-out tube to be withdrawn and replaced.

Abstract: An adjustable overhead lighting fixture having fixed elongated support runners, which themselves may or may not be lighting fixtures, and a plurality of elongated hanger fixture elements which endwise releasably engage and span any two support runners at any point along the length of the runners and which are electrified from the runners. Hanger fixture elements may be used to support and electrify other hanger fixture elements such that the fixtures can be arrayed overhead to meet a variety of lighting applications.

Abstract: A connection system comprising a variety of metal connectors, a plurality of illuminated modules insertable into the connectors, and electrical leads hidden within the connectors to electrically join the modules in series relationship, and a step-up transformer for supplying the voltage needed to energize the plurality of modules. Each connector has a hollow body adapted to receive at least one illuminated module. Each illuminated module includes a rigid, transparent plastic sleeve with an annular collar at each end of the sleeve; a gas filled tube is retained in the sleeve by the collars. A foot with a mounting flange is operatively associated with some of the connectors to firmly support an assembled plurality of illuminated modules. The connectors and illuminated modules can be assembled into diverse configurations for applications previously unsuited for gas filled tubes, such as neon.

Abstract: A lighting fixture combined with a suspended ceiling in which ceiling panels are supported from channels and one or more fluorescent tubes are provided in a box or boxes supported by the channels and a lens or lenses are, arranged below the box and of the same shape as the ceiling panels so as to blend in with adjacent ceiling panels.

Abstract: A tubular incandescent lamp which comprises an elongate transparent envelope; and a plurality of small lamps linearly arranged and extending lengthwise through the envelope, each of said small lamps containing a helically coiled filament and wherein the difference between the inner diameter of the envelope and the outer diameter of the respective lamps is chosen to be 2 mm or less.

Abstract: Lighting apparatus comprising a long span lightweight luminaire beam with a cross section that is substantially in the shape of an equilateral triangle and is formed in multiple sections secured together. One apex of the triangle is pointed downwardly. The side panels of the beam are used as mounting and reflecting surfaces for fluorescent lights or the like, while the ballast and wiring are mounted inside the beam to protect them from weather. The mounting hole for the ballast also serves as the access hole for assembly of the span, and the ballast may be inverted in its mounting for servicing. The beam is supported in an elevated, substantially horizontally extending position by one or more support posts. This apparatus is particularly advantageous for use in illuminating large outdoor areas such as tennis courts.

Abstract: A modular housing assembly for housing a vehicle warning light system and intended for mounting across the roof of a police car or other vehicle on which warning lights are required. The housing comprises a plurality of transparent plastic panels of modular construction, there being provided a plurality of front modular panel sections interconnected in side-by-side relation and a plurality of rear modular panel sections interconnected in side-by-side relation, the front and rear panel sections being connected to one another and to a common base member.

Abstract: An asymmetrically mounted recessed lighting fixture which includes an integral appearance frame about the bottom edge thereof which underlies and conceals the ceiling support framework from view. The lighting fixture includes an undercut or recessed portion in one sidewall which permits mounting of the luminaire on the ceiling support framework without removal of the appearance frame which underlies and conceals the ceiling support framework.

Abstract: Combined hand rail and lighting fixture for a walkway, such as a stair flight, characterized by a tubular member with spaced openings in a lower portion of its wall in which are disposed lighting fixtures, each comprising an extruded housing, a reflector for supporting an illuminating bulb, and an extruded arcuate window closing an opening, the housing and reflector forming a space for receiving the requisite electrical conductors. Its construction is such that it inherently prevents entry of water and hence may be employed outdoors as well as indoors. After installation and wiring, the housing is preferably secured to the hand rail and replacement of a bulb may be effected by removal of a pair of securing clips and the window, only, without disturbing the housing or permanent wiring connections.

Abstract: A fixture for a plurality of tubular electric lamps comprises an elongated insulating angle bar-frame having two flat mutually perpendicular flanges joined by a flat central web at 45.degree. to the flanges. Flat conductors on the inner faces of the flanges carry alternately-disposed pairs of L-shaped brackets which support the lamps in axial alignment. The frame can be secured by self-adhesive bands on the outer faces of the flanges, or by screws passing through the central web.

Abstract: A multi-panel electroluminescent panel assembly is provided in which an area extending over several panels may be uniformly illuminated by light produced by the panels, and over which non-illuminated areas, stripes or the like resulting from electrode contacts are eliminated. Each panel is constructed such that the light produced per unit area is substantially uniform throughout the panel, including that from an area immediately adjacent at least one edge thereof. The panels are assembled in an overlapping arrangement such that non-illuminating areas of one panel are covered by illuminating areas of at least one other panel. The assembly of panels provides a large area source of uniform illumination suitable for back-lighting graphic indicia, and may be desirably included as signboards on the sides of motor vehicles such as transport trucks, buses, etc.