Abstract: In an overhead industrial light fixture of the type including a housing with a base member and a top member forming a space, the base member forming a socket-receiving recess, and power-related components in the space, portions of the housing form a vertical airflow thermal chimney immediately adjacent to the recess and extending through the housing from bottom to top, to facilitate heat transfer to the chimney and heat-dissipating airflow to the atmosphere. The base member and top member are preferably formed of die-cast metal. 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 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: 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: In an overhead industrial light fixture of the type including a housing with a base member and a top member forming a space, the base member forming a socket-receiving recess, and power-related components in the space, portions of the housing form a vertical airflow thermal chimney immediately adjacent to the recess and extending through the housing from bottom to top, to facilitate heat transfer to the chimney and heat-dissipating airflow to the atmosphere. The base member and top member are preferably formed of die-cast metal. A variety of preferred features are disclosed.

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 hinging mechanism attaching an access panel to a housing is provided that has a latching device rigidly mounted to the inner surface of the panel and releasably pivotally secured to the interior surface of the housing, whereby the panel is detachable from the housing and free to move between open and closed positions. Preferably, the mechanism further includes a linkage member movably mounted to the interior surface, whereby the mechanism has articulation at independent points between the housing and the panel. The mechanism is also preferably one where the latching device includes a latch-bracket and a latch, the latch being pivotally attached to the latch-bracket.

Abstract: An apparatus for mounting a lighting fixture is provided having a mount housing with at least one pivot portion and a support panel with at least one hook portion, the support panel being attached to the mount housing in a manner where the hook portion can slide and pivot with respect to the pivot portion. The pivot portion includes a rail, a tab-slot and a tab-rest, the tab-slot and tab-rest being adjacent to the rail and the hook portion has a hook member and a tab-stand adjacent to the hook member. The support panel is free to move between an open and a closed position and, preferably, detachable from the mount housing. A method for mounting a lighting fixture is also disclosed.

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 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.

Abstract: An overhead industrial light fixture suspended by a hook from a support assembly having a suspension stabilizer that engages the hook and is attached to the support assembly. The suspension stabilizer has two slots sized to receive and frictionally hold the upward and downward portions of the hook individually. A method for stabilizing the orientation of a suspended overhead industrial light fixture.

Abstract: An overhead industrial light fixture suspended by a hook from a support assembly having a suspension stabilizer that engages the hook and is attached to the support assembly. The suspension stabilizer has two slots sized to receive and frictionally hold the upward and downward portions of the hook individually. A method for stabilizing the orientation of a suspended overhead industrial light fixture.

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.

Abstract: An overhead light fixture including a housing with top and bottom walls and sidewalls forming a substantially enclosed space, power-related components and a lamp-mounting socket. The housing is in two pieces—a top member forming the top wall and downwardly-extending sidewall portions and a bottom member forming the bottom wall and upwardly-extending sidewall portions to complete the sidewalls. The top-member sidewall portions preferably form endwalls terminating in flanges engaged with the bottom wall. Preferably, the top member includes a central top-wall portion and lateral top-wall portions below and on opposite sides of the central portion. The lateral top-wall portions have side flanges engaging the sidewall portions of the bottom member. The top and bottom members are preferably bent sheet metal.

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 location. The bottom wall includes a plurality of downward projections around the socket location, and a reflector is secured to the housing by attachment at the downward projections, creating an air flow gap for cooling purposes between the reflector and the housing. In some preferred embodiments, the bottom wall defines a socket window, and the socket is in the enclosed space with its lamp-receiving end aligned with the socket window. In some preferred embodiments, the bottom wall is formed of sheet metal and the projections are stampings therein.

Abstract: A method for making an overhead light fixture includes forming top and bottom housing members, the top member having a horizontal top wall with fastener-receptors therein and an inside surface, and the bottom member being engageable with the top member, placing the top member on a work support structure in inverted orientation, placing each of the power-related components on the top-wall inside surface, securing the power-related components to the inside surface by engagement of fasteners in a common direction with a set of the top-wall fastener-receptors, placing the bottom member on the top member in inverted orientation and securing them together securing the bottom member to the top member, and removing the fixture from the support structure. Unidirectional fastener attachment is used for the securing steps in assembly, including with respect to attachment of a socket mount, and with respect to attachment of the top and bottom housing members.

Abstract: An overhead light fixture including a housing with a top wall, power-related components, a lamp-mounting socket, and usually a reflector. The top wall defines a pair of side-by-side hanger-member apertures, and a hanger member extends through a chosen aperture in a chosen orientation, thus providing multiple positions for the hanger vis-a-vis the housing to accommodate different centers of gravity as determined by the particular choice and positioning of power-related and other components within and on the housing. Preferably, the apertures are slots and the hanger member is a flat plate with right-angle bends. A junction box with another pair of hanger-member apertures gives more mounting options, as does differing hangers. The invention also includes a top wall with a hanger-member aperture between a pair of securing devices, such as a fastener apertures, allowing attachment of the hanger member to the housing in a selected one of two orientations.