Abstract: A light fixture including a mounting assembly for securing the light fixture to a static structure. The mounting assembly includes a gripper attachable to the static structure and a bar having a gripping region and a first end secured with respect to a main body portion of the light fixture. The mounting assembly may be adjustable such that the light fixture is held in a selected one of a plurality of possible orientations. In such embodiments, the gripper and the bar are configured for a finite number of the orientations such that the light fixture is held in a selected one of a plurality of orientations.

Abstract: An LED light fixture includes a heat-sink body having a circuit-board mounting surface and a circuit board in thermal-contact relationship to the circuit-board mounting surface. The circuit board has an LED-populated area and a surrounding non-LED-populated area such that lateral heat conduction within the circuit board is greater than heat conduction from the circuit board to the circuit-board mounting surface. The fixture may be a low-profile LED light fixture including a base plate which has a substantially planar back surface, a front surface and heat-dissipating surfaces extending forward from the front surface. An LED circuit board and at least one LED power-circuitry unit, which are secured with respect to the front surface adjacent to the heat-dissipating surfaces, do not extend behind the back surface of the base plate.

Abstract: In an embodiment of a light fixture support assembly for securing a light fixture to a fixed surface, the assembly includes a fixture-support member and a surface-attachment member. The fixture-support member has proximal and distal ends and also includes walls defining a compartment and further defining a first opening at the proximal end of the fixture-support member for communication with the surface-attachment member. The walls further define a second opening for communication with the light fixture. The fixture-support assembly also has a neck portion extending from the proximal end and the neck portion has a flange portion extending from it. The surface-attachment member includes a proximal end attached to the fixed surface and a distal end configured to engage the neck portion, whereby the fixture-support member is supported by the surface-attachment member when the neck portion is inserted into the fixture-support member.

Abstract: The inventive ceiling-mounted light-fixture support assembly includes a mounting bracket having upper and lower surfaces, a length, and a width between two width sides. The assembly also includes a fixture attachment member having a top with portions defining a top opening which has a width narrower than the width of the mounting bracket. The fixture attachment member further has a recessed portion defining a slideway which (a) is in lateral communication with the top opening, (b) has a width wider than the width of the mounting bracket, and (c) is spaced sufficiently lower than the opening-defining portions of the top to receive the two width sides of the mounting bracket. In use, the fixture attachment member can be positioned so that the mounting bracket is at least partially within the slideway and then repositioned so that the mounting bracket is within the top opening for light-fixture support.

Abstract: A ceiling fixture mounting assembly including a box for affixing to a ceiling and containing electrical wiring, the box having opposite vertical sidewalls each with first and second laterally spaced threaded holes receiving corresponding first and second fasteners, and two vertical mounting plates each projecting upwardly from the fixture to terminate in an upper edge and positioned to overlie one of the sidewalls and each having first and second ways receiving the first and second fasteners, respectively, the first way configured for supporting the fixture at an angle to the box for connecting the wires, wherein the improvement comprises each fastener having a head and a threaded portion and the first and second ways having first and second mounting slots, respectively, each having a lower closed end and an upper open end and sized smaller than the head, the plate having a recess at the closed end configured to receive the head such that it is in vertical alignment with the open end, thereby holding the plat

Abstract: A retrofit canopy luminaire assembly adapted for downward illumination and having a housing with inwardly-directed ledges near the lower edges of the housing. The luminaire has at least two support brackets secured to at least one of the ledges; a face plate removably secured to the brackets on the lower side of the housing; and a hanging tether attached to one of the brackets and to the face plate. The face plate is adapted to hold lighting fixture components. When the face plate is removed from the brackets, the face plate hangs freely held by the tether to allow free access to the inside of the luminaire.

Abstract: A lighting fixture includes a base having a hole in a top surface thereof, at least one retaining member disposed on the top surface of the base proximate the hole, a lamp housing having a top portion and a dome-shaped bottom portion, the bottom portion including a perimeter portion having an essentially planar annular end surface sized to surround the hole, at least one boss extending from the perimeter portion of the lamp housing, and a handle attached to the top portion of the lamp housing, where the retaining member is structured for receiving the boss with the annular end surface of the lamp housing abutting the top surface of the base and surrounding the hole, so that rotation of the handle effects twist-locking attachment or detachment of the lamp housing respectively to or from the base by rotating the boss into or out of engagement with the retaining member.

Abstract: The inventive ceiling-mounted light-fixture support assembly includes a mounting bracket having upper and lower surfaces, a length, and a width between two width sides. The assembly also includes a fixture attachment member having a top with portions defining a top opening which has a width narrower than the width of the mounting bracket. The fixture attachment member further has a recessed portion defining a slideway which (a) is in lateral communication with the top opening, (b) has a width wider than the width of the mounting bracket, and (c) is spaced sufficiently lower than the opening-defining portions of the top to receive the two width sides of the mounting bracket. In use, the fixture attachment member can be positioned so that the mounting bracket is at least partially within the slideway and then repositioned so that the mounting bracket is within the top opening for light-fixture support.

Abstract: Apparatus includes a mounting plate having a hole in a center portion thereof, a recessed light support member having laterally-extending flanges on each of two essentially parallel sides, and a guide disposed on the top surface of the plate, the guide having a longitudinal section offset from the top surface by a distance greater than the thickness of the flanges, where the flanges of the recessed light support member are slidable laterally between the top surface of the plate and the longitudinal section of the guide. A method of servicing a lighting fixture having a can includes sliding the can laterally from a position where the can is centered over the hole to a position where a servicing space is effected between a perimeter of the hole and the can.

Abstract: A heat sink assembly for mounting an LED module to a surrounding main heat sink member is disclosed. The heat sink assembly has a first plate with inner and outer faces and a peripheral edge. The assembly further includes a second plate that is movable with respect to the first plate and has inner and outer faces and an inwardly-tapered peripheral camming surface. Also included in the assembly is an expandable ring sandwiched between the first and second plates. The ring has an inward peripheral edge that engages the camming surface and an outward heat-transfer surface. The ring is expandable beyond the peripheries of the first and second plates. The heat sink assembly also has a sandwiching-device that adjustably interconnects the first and second plates such that sandwiching of the ring facilitates heat-transfer engagement of the heat-transfer surface with the main heat sink member.

Abstract: A heat sink assembly for mounting an LED module to a surrounding main heat sink member is disclosed. The heat sink assembly has a first plate with inner and outer faces and a peripheral edge. The assembly further includes a second plate that is movable with respect to the first plate and has inner and outer faces and an inwardly-tapered peripheral camming surface. Also included in the assembly is an expandable ring sandwiched between the first and second plates. The ring has an inward peripheral edge that engages the camming surface and an outward heat-transfer surface. The ring is expandable beyond the peripheries of the first and second plates. The heat sink assembly also has a sandwiching-device that adjustably interconnects the first and second plates such that sandwiching of the ring facilitates heat-transfer engagement of the heat-transfer surface with the main heat sink member.

Abstract: A ceiling fixture mounting assembly including a box for affixing to a ceiling and containing electrical wiring, the box having opposite vertical sidewalls each with first and second laterally spaced threaded holes receiving corresponding first and second fasteners, and two vertical mounting plates each projecting upwardly from the fixture to terminate in an upper edge and positioned to overlie one of the sidewalls and each having first and second ways receiving the first and second fasteners, respectively, the first way configured for supporting the fixture at an angle to the box for connecting the wires, wherein the improvement comprises each fastener having a head and a threaded portion and the first and second ways having first and second mounting slots, respectively, each having a lower closed end and an upper open end and sized smaller than the head, the plate having a recess at the closed end configured to receive the head such that it is in vertical alignment with the open end, thereby holding the plat

Abstract: In an embodiment of a light fixture support assembly for securing a light fixture to a fixed surface, the assembly includes a fixture-support member and a surface-attachment member. The fixture-support member has proximal and distal ends and also includes walls defining a compartment and further defining a first opening at the proximal end of the fixture-support member for communication with the surface-attachment member. The walls further define a second opening for communication with the light fixture. The fixture-support assembly also has a neck portion extending from the proximal end and the neck portion has a flange portion extending from it. The surface-attachment member includes a proximal end attached to the fixed surface and a distal end configured to engage the neck portion, whereby the fixture-support member is supported by the surface-attachment member when the neck portion is inserted into the fixture-support member.