Abstract: An industrial light fixture of the type including a housing with a base member and a top member and containing power-related components includes a spring-bracket secured to bracket-securement point(s), extending along the capacitor to hold the capacitor in place and biasing the capacitor into heat-exchange engagement against one surface of the top member to facilitate heat transfer from the capacitor to the top member and dissipation therefrom to the atmosphere. The base member and top member are preferably formed of die-cast metal and a variety of preferred features are disclosed.

Abstract: An industrial light fixture of the type including a housing with a base member and a top member and containing power-related components includes spring-spacer apparatus between the base member and the ballast, such that, with the top member closed with respect to the base member, the spring-spacer apparatus biases the ballast into heat-exchange engagement with at least one surface of the top member and provides an air gap between the ballast and the base member. The base member and top member are preferably formed of die-cast metal and a variety of preferred features are disclosed.

Abstract: A method for implementing lighting utilizes a lighting fixture having a plurality of lateral reflector positions, including selectively installing a first type reflector panel or a second type reflector panel in individual ones of the plurality of lateral reflector positions, the first type reflector panel having a greater uplighting capacity compared to the second type reflector panel, whereby the selectively installing determines, for the lighting fixture, a proportion of uplight versus downlight. For a plurality of tube positions disposed in a plane, a method may include vertically positioning a reflector assembly with respect to the plane. Individual reflector panels may be replaced by flexing the panel. A method may include providing a sensor switch operative to detect an occupant and connect an electrical path when the occupant is detected, and providing a selector for selecting ones of the ballasts to be connected to the electrical path by the sensor switch.

Abstract: An assembly for an electrical fixture housing, the housing of the type enclosing ballasts, the housing including top and rear walls, first and second side walls, and two heat sink pads orthogonally disposed respecting one another, the assembly including a component tray having a longitudinal axis between first and second ends, a middle portion, and a ballast secured to the middle portion, and first and second tray attachments structured for quickly-detachable attachment of the respective first and second ends of the component tray to the respective first and second side walls of the housing, where the attachment effects direct and snug engagement of the ballast with the two heat sink pads.

Abstract: A method, for implementing lighting by utilizing a lighting fixture having a plurality of laterally-spaced light source locations and corresponding lateral reflector positions, may include selectively installing a reflector of a first type or a second type in respective ones of the plurality of lateral reflector positions, the first type reflector having greater uplighting capacity compared to the second type reflector, whereby the selectively installing determines a proportion of uplight versus downlight. For a plurality of tube positions disposed in a plane, a method may include vertically positioning a reflector assembly with respect to the plane. Individual reflector panels may be replaced by flexing the panel. A method may include providing a sensor switch operative to detect an occupant and connect an electrical path when the occupant is detected, and providing a selector for selecting ones of the ballasts to be connected to the electrical path by the sensor switch.

Abstract: A ballast for electrical lighting fixtures with improved thermal protection features has ballast laminations, primary and secondary coils, and a thermal protector, the thermal protector being wired in series with the secondary coil. The ballast preferably is of the type having multiple input voltage taps on the primary coil; in such cases, the electrical positioning of the thermal protector in series with the secondary coil causes the wiring assembly of the thermal protector (as part of the ballast) to be independent of the primary coil input voltage tap used in a particular application. Improved electrical lighting circuits for high-intensity-discharge lamps have the above-described thermally-protected ballasts.

Abstract: An overhead industrial light fixture of the type including a housing, power-related components and a lamp-mounting socket. The housing has top and bottom walls and sidewalls together forming a substantially enclosed space, and the bottom wall defines a socket window. The power-related components and the socket are both secured to the housing and within the enclosed space, thereby to provide a low-profile fixture with its components within a single housing. Preferred embodiment include the socket having its lamp-receiving end substantially aligned with the socket window.

Abstract: A ballast for electrical lighting fixtures has improved thermal protection features. The ballast has ballast laminations, primary and secondary coils, and a thermal protector, the thermal protector being wired in series with the secondary coil. When the ballast is of the type having multiple input voltage taps on the primary coil, the electrical positioning of the thermal protector in series with the secondary coil causes the wiring assembly of the thermal protector (as part of the ballast) to be independent of the primary coil input voltage tap used in a particular application. Improved electrical lighting circuits for high-intensity-discharge lamps may be obtained, the circuits having the above-described thermally-protected ballasts.

Abstract: A housing 20 for electrical lighting fixtures with improved ballast mounting is disclosed. The ballast 10 is mounted such that it tightly engages two walls 30,40 of the housing. The housing is a heat sink and heat from the ballast is efficiently transferred to the two walls. The ballast is preferably mounted to one of the two walls. The wall to which the ballast is mounted preferably includes a channel 33 and the ballast preferably includes a bore 12, such that a rod 50 passing through the bore and positioned in the channel mounts the ballast to the wall. A method of mounting a ballast to a housing for electrical lighting fixtures such that the ballast tightly engages two walls of the housing is also disclosed. Such mounting is preferably performed by a single mount.