Abstract: The lighting system according to the present invention is based on a modular lighting component or fixture which is designed to accommodate a single T8 (1" diameter) fluorescent tube. The T8 fluorescent tube which is smaller than the widely used T12 fluorescent tube is more efficient and lower powered than the more common T12 lamp. The modular system of fixtures each contain only one lamp and allow the end user to couple the correct quantity of fixtures to meet both the lighting requirements and the power density limitations of any application. The modular system of fixtures along with a system for coupling the fixtures allows extreme flexibility of layout designs for a variety of applications. The individual lighting fixture includes a lamp housing in which the single T8 light source is mounted, electrical connections for the light source, side reflectors and a plurality of cross vanes or louvers extending transversely below the light source.

Abstract: The lighting fixture according to the invention includes a fixture housing having a longitudinal axis and supporting a fluorescent lamp in the housing. Side reflectors are provided which extend parallel to the longitudinal axis of the housing on either side of the lamp. A plurality of cross vanes and two end vanes are positioned below and perpendicular to the longitudinal axis of the lamp. Each cross vane has a top surface of a generally V-shaped configuration and reflector surfaces extending from the top surface. The reflector surfaces are concavely curved with a radius of curvature which varies along the width of the cross vane. The end vanes also include a generally V-shaped top surface and one reflector surface with is concavely curved with a radius of curvature which varies along the width of the end vane. The cross vanes and end vanes according to the invention confine substantially all of the light to within the preferred RP-24 cut-off zone and prevent unnecessary reflections which lower efficiency.

Abstract: A lighting fixture includes a channel member defining a cavity, and a pair of lamp socket-carrying brackets mounted to the channel member for rotation between a stored position in which the lamp socket is disposed within the cavity, and an operative position wherein the lamp socket projects from the cavity. The channel member includes a pair of side walls, and each bracket includes a pair of side walls situated opposite respective ones of the channel side walls. Each channel side wall includes a semi-circular leg; and each bracket side wall includes a semi-circular pocket spaced from a peripheral edge of the bracket side wall. Each leg includes a nipple engaging a recess of the bracket side wall to define a pivot axis enabling the semi-circular pocket to rotate relative to the semi-circular leg between the stored and operative positions.

Abstract: A lighting fixture is convertible for selective use in different suspended ceilings having grid members with bearing surfaces of a predetermined height differential. The fixture comprises a housing including a main section and two longitudinal side sections releasably securable to the main section. The main section carries a fluorescent lamp(s), and the side sections carry a shielding media, such as a deep cell louver assembly or a luminous element. The side sections carry tabs which are selectively insertable within either of two vertically spaced rows of slots in the main section to enable the main section (and the lamp) to be vertically adjusted relative to the side sections (and the shielding media) in order to maintain a prescribed photometric relationship between the lamp and shielding media, regardless of which grid suspension system is utilized.

Abstract: The present invention provides an improved wall-mounted lighting unit for creating a visual environment which is conductive to general care lighting and which requires both good vertical lighting and good brightness control. The lighting unit utilizes a microbase prism design in a refractor which preferably forms a portion of the bottom surface of the housing to provide good horizontal illumination and internal linear optics for good vertical illumination of the subject as well as providing a high visual comfort index. The lighting unit also has a unique leveling feature which compensates for irregularities in the surface of the wall upon which it is mounted. Backlighting can be provided by the lighting unit using a series of apertures which increase the structural integrity of the unit and also simplify its manufacture.

Abstract: A troffer for fluorescent lights, including a stabilizer system, the troffer for fluorescent lights in the present invention includes a stabilizer system to prevent the outward bending of fuel and suspension runners or stringers. The stabilizer system has a first vertical plate member attached to the fluorescent troffer, a slotted bridge member eminating perpendicularly from the first vertical plate member and a second vertical plate member extending perpendicularly from the slotted bridge member. The second vertical plate member includes a fastener which is threaded through the vertical plate member to contact the runner or stringer.

Abstract: A fluorescent lamp fixture having a troffer and a louver light diffuser includes meltable fasteners for attaching the louver light diffuser to the troffer. In the event of a fire, the meltable fasteners allow the louver light diffuser to fall free from the troffer.