Abstract: A bracket assembly for suspending an object from a portion of a bar joist, the bracket assembly having a rigid hangar having a first end portion and an opposing second end portion, the second end portion including at least one connector for engaging the object and means for connecting the rigid hanger to the bar joist, the first end portion of the rigid hangar being pivotally connected to the connecting means so that the object connected to the rigid hangar is able to self-level upon the connecting means being connected to the bar joist.

Abstract: A fireproof lamp, comprises a barrel cover (2) and a lamp holder (4) installed therein. A through hole (6) is provided on the barrel cover (2). A pipe (5) is installed in the through hole (6), and an electric wire connected with the lamp holder (4) is connected to a junction box (8) outside of the barrel cover (2). An expansion fireproof material (9) is provided inside the barrel cover (2).

Abstract: A lighting device, comprising a housing and at least one mounting clip. The housing comprises an electrical connection region engageable in an electrical receptacle. The mounting clip is pivotable from a first position, where an end region of the mounting clip does not extend beyond a periphery of the housing, to a second position, where the end region extends beyond the housing periphery. Also, a lighting device, comprising a housing, a trim element and at least one mounting clip. The mounting clip is pivotable, such that if the mounting clip is in a second position and then the trim element is rotated, the mounting clip will pivot to a third position, where the mounting clip engages the housing such that the trim element is biased toward a ceiling or other structure in which the lighting device is mounted. Also, methods of installing housings and/or trim elements.

Abstract: A recessed fixture frame mounting device comprises a first hanger bar connected to a first joist, a second hanger bar connected to a second joist, a recessed can light and junction box connected to the first and second hanger bars, the recessed can and the junction box movable about an axis extending between the first and second joists.

Abstract: A lighting device, comprising a housing and at least one mounting clip. The housing comprises an electrical connection region engageable in an electrical receptacle. The mounting clip is pivotable from a first position, where an end region of the mounting clip does not extend beyond a periphery of the housing, to a second position, where the end region extends beyond the housing periphery. Also, a lighting device, comprising a housing, a trim element and at least one mounting clip. The mounting clip is pivotable, such that if the mounting clip is in a second position and then the trim element is rotated, the mounting clip will pivot to a third position, where the mounting clip engages the housing such that the trim element is biased toward a ceiling or other structure in which the lighting device is mounted. Also, methods of installing housings and/or trim elements.

Abstract: A lighting fixture which comprises a ceiling frame equipped with an attachment portion, a hollow portion, and a storage recess, wherein the attachment portion is located at an upper end portion of the frame to be suspended from a ceiling of a building, the hollow portion is located below the attachment portion, and the storage recess is located below the hollow portion; the storage recess has an opening which faces downward, a lighting module is set in the storage recess; and the lighting module includes plural light emitting diodes, a reflector which reflects light emitted from the diodes, and a lighting housing to which the light emitting diodes and the reflector are installed.

Abstract: The invention relates to the creation of a localized light, particularly to a light system (12) for creating a localized light illuminating for example clothing hanging on the rail. The light system comprises lighting means (16,17) and lighting control means (18,19) which are adapted to create the localized light (14) responsive to user actions with objects hanging on a rail (10). Thus, a user browsing for example clothing hanging on the rail always has sufficient localized light for watching the clothing even in a situation with dimmed ambient lighting.

Abstract: An LED lamp includes a lamp body, a casing connecting the lamp body and a position post connecting the casing. The lamp body includes a plurality of lamp modules and at least a bracket. Each of the lamp modules includes a heat sink and an LED module attached to the heat sink. The lamp body can be arranged in multi forms by the at least a bracket connecting different numbers of the lamp modules together. The lamp body can have one of the following forms: an L-shaped form, a U-shaped form and a square, loop-shaped form.

Abstract: Daylighting systems and methods with auxiliary lighting fixtures are disclosed. Some embodiments disclosed herein provide a daylighting apparatus including a tube having a sidewall with a reflective interior surface and an auxiliary light fixture. The tube can be disposed between a transparent cover positioned to receive daylight and a diffuser positioned inside a target area of a building. In certain embodiments, the tube is configured to direct the daylight transmitted through the transparent cover towards the diffuser. The auxiliary light fixture can include a lamp disposed within the tube and a light control surface configured to reflect light exiting the lamp towards the diffuser and to transmit daylight propagating through the tube from the direction of the transparent cover. The lamp can be disposed on the sidewall of the tube.

Abstract: A lighting assembly includes a lamp alignment assembly for positioning the lamps after the lighting assembly is installed. The lighting assembly includes a ceiling pan for mounting to the ceiling support and a lamp assembly attached to the ceiling pan. The lamp assembly is adjustable in a transverse and rotational direction with respect to the ceiling pan. The lamp assembly is provided with alignment springs to align the lamp assembly at predetermined settings. A sight window is formed in the ceiling to visually set the lamp assembly in a selected position. A locking member on the lamp assembly locks the lamp assembly in a fixed position on the ceiling pan.

Abstract: A luminaire and lighting assembly is provided having a ceiling pan and a light assembly supported on the ceiling pan. The light assembly is rotatable and movable in a lateral direction on the ceiling pan to provide adjustment of the light assembly with respect to the ceiling pan. The light assembly includes an aiming device which allows the lamp to be adjusted about a vertical axis and about a horizontal axis for adjustment of the lamp. The aiming assembly includes a locking assembly which fixes the position of the aiming assembly to simultaneously prevent rotation about the vertical axis and about the horizontal axis.

Abstract: A light fixture (10) is provided having a wall housing (11) and lighting arms (12). The light fixture includes a heating source (17) mounted within the wall housing. The wall housing includes an external wall (19) adapted to be mounted to a vertical wall of a structure. The external wall has a top (19a), bottom (19b), two oppositely disposed sides (19c), and a front face (19d). The housing top has an air intake opening (20). The housing bottom has an air exhaust outlet (21) which directs air in a downwardly direction. The wall housing also includes an air channel (23) which commences at air intake opening and ends at air exhaust outlet. The heat source includes a heating element (25) mounted within the airflow channel and a motorized fan (26) to create an air flow through the channel which exits through the air exhaust outlet.

Abstract: Electrical fixtures, such as junction boxes or recessed luminaires, include mounting brackets that support the fixtures from structural members while fasteners, such as screws or nails, are driven through the mounting brackets, thereby facilitating mounting the fixtures. Each of the mounting brackets has a general U-shape that includes at least three generally planar sides. The top side is generally perpendicular to the other two sides, and the top side connects the other two sides and together. The three sides define (in cross-section) a structural member receiver opening. An inside dimension of the structural member receiver opening is such that bracket fits snugly around at least a portion of a commonly sized wood or metal structural member, such as a furring strip or joist, used in ceiling construction. In one embodiment, two of the sides of the structural member receiver opening define an acute dihedral angle to hood around the edge of a metal furring strip.

Abstract: The invention relates to a recessed lighting fixture comprising a holder for fixing a mounting surface, in particular in a room ceiling consisting of an illuminant holder and a reflector. The holder and the reflector are disposed with respect to each other in such a way that the reflector extends in the direction of a main lighting beyond the mounting surface when the recessed lighting is fixed thereto. In said area extending beyond the mounting surface, the reflector is connected to a reflective element which is vertically or angularly oriented with respect to the direction of the main lighting and is disposed outside of the reflector for receiving the light in the area between the mounting surface and the reflective element.

Abstract: In order further to develop a built-in light comprising a frame 1 which can be mounted to a ceiling, a retaining hoop 2 which can be fixed to the top side of the frame, a reflector 4 which can be connected to the frame 1 and a fitting carrier 3 which can also be connected to the frame 1 in such a way that it can be more easily assembled, it is proposed that the retaining hoop 2 is provided with lateral guide surfaces 2d for guiding the fitting carrier 3 and support surfaces 2e engaging thereunder for draw-like receiving the fitting carrier 3 and that there are provided latching means for connecting the fitting carrier 3 to the retaining hoop 2.

Abstract: The present invention provides an LED lighting device inlaid on a ceiling. The ceiling is divided into a plurality of lattice by a matrix of metal strip, plastic strip or wood strip, a matrix of LED are installed on the lattice; an AC power is inputted through a power line to an AC/DC converter for being converted into a DC power, and then the DC power passes through a current stabilizer, a resistor, a connector for being inputted to two ends of each row of the LEDs; LEDs of each row are serially connected.

Abstract: The present invention relates to a ceiling panel for suspended ceiling systems that is designed to create a moiré effect when viewed from below. The moiré ceiling panels are designed to fit into a standard suspended ceiling grid and include a semi-transparent upper layer, a semi-transparent lower layer, and a light diffusing layer. The lower layer includes a surface with a plurality of light passable apertures or surface areas to allow light from above the suspended ceiling to pass through. The upper layer also includes a surface with a plurality of light passable apertures or surface areas and is connected to the lower layer to form the moiré panel. The light diffusing layer is connected to the upper panel and is design to intensify the moiré pattern while simultaneously concealing the area above the panel.

Abstract: A lighting assembly includes a light fixture adapted to be disposed in relation to an opening defined in a surface of a structure such that a lamp may be installed in the light fixture through the opening of the structure. A thermal insulation barrier surrounds the light fixture, is positioned in close proximity of the opening of the structure and constructed so as to entrap heat from the opening of the structure. A trim has an outer surface, configured to substantially enclose the opening, consists of at least one fireproof material, and is adapted to engage the light fixture so that the outer surface is disposed in proximity to the opening of the structure and forms a continuous surface with the structure.

Abstract: A lighted chair rail comprises a frame secured to a wall and a horizontal facia mounted on the frame and positioned in a spaced apart relationship to the wall. Light bulbs supported on the frame direct light through a lens mounted on the horizontal facia onto the wall. The horizontal facia may also include decorative items.

Abstract: An electronic luminaire based on light emitting diodes, for illumination with a low electric power consumption at indoor spaces for offices or wide spaces, which use false soffit systems on their ceilings, in order to adapt their lighting. It is based on a closed module that is manufactured with hot galvanized stamped laminated steel or with injection molding plastic, and comprehends four sections: A), B), C) and D), where A) corresponds to a casing which houses B) and C) overlapped sections, and these are finally assembled to D) section, together with an electronic power source; the B) section is an electrical harness, the C) section is a plurality of LED bars, and D) section corresponds to the reflecting screen, that counts with a plurality of individual reflecting elements of concave, elliptical or parabolic type.

Abstract: The invention comprises, in one form thereof, a light fixture for retrofitting a non-recessed ceiling lamp, such as a pendant lamp, to an existing recessed light fixture. The light fixture includes a mounting bracket and a power adapter. The mounting bracket cooperates with screws that affix the existing, recessed light fixture to the existing mounting structure. The non-recessed lamp is mounted to the mounting bracket as it would normally be mounted to the ceiling. The recessed lighting baffle may be removed. The power adapter is screwed into the recessed light fixture's existing light bulb receptacle and includes an electrical outlet that receives a power plug that is wired to the non-recessed lamp's power cord. Alternatively, the power cord is wired directly to the power adapter.

Abstract: A lamp holder with improved structure includes an upper plate and a lower plate mounted to a ceiling; the upper plate has a top and a bottom with each disposed with multiple reinforcement ribs; a circular wall is disposed to the bottom; two accommodation spaces are defined by the circular wall and those reinforcement ribs on the bottom with each accommodation space disposed with a conduction reed secured in place by an elastic member; two sockets are provided to the lower plate for insertion by pins from an energy saving lamp and to constitute a conducted circuit with the conduction reed.

Abstract: The invention comprises a completely recessed wall-wash lighting fixture capable of being installed within a ceiling. The lighting fixture comprises a housing, which contains a lamp. The invention may comprise a lighting fixture further comprises a reflector disposed within the housing and adjacent to the first end of the housing. The invention may also comprise a flared lamp shield attached to the housing, which is capable of protecting the lighting fixture from damage. The lamp shield extends below the ceiling when the lighting fixture is installed.

Abstract: A flat-panel lamp and fixture system having a removable flat-panel lamp having at least two externally accessible electrode contacts and a suspended fixture for removably receiving at least one of flat-panel lamps and holding at least a portion of each of the flat-panel lamps above a portion of the suspended fixture. The system employs gravity to hold the at least one of flat-panel lamps in alignment having electrical connections for providing electrical connection to the at least two externally accessible electrode contacts.

Abstract: A ceiling-mounted troffer-type light fixture for illumination. The fixture comprises a body with a first flange having at least one hook-receiving opening and a second flange with a suspension-member-receiving opening. A cover includes a rectangular frame, at least one catch-arm and at least one suspension member. Frame fasteners along the frame engage the perimeter in a closed position. One-person attaching/closing and removal of the cover for maintenance is facilitated by the cover being supported in an open position, suspended position and fully engaged with the body in a closed position.

Abstract: A light fixture mounting bracket for mounting a linear light fixture housing relative to a hung ceiling in one of a flush mount configuration and a suspended configuration. The light fixture mounting bracket includes at least one mounting surface configured for connection to the housing, and an enclosure connected to the at least one mounting surface. The enclosure is integral with the mounting surfaces, and both the mounting surfaces and the enclosure are formed from a single piece of material.

Abstract: A light assembly is provided for installation in one of an insulation capable (IC) environment and a non-insulation capable (non-IC) environment. The light assembly comprises a light fixture and a label. The light fixture includes a housing having an open end and a wall visible through the open end, the wall defining an aperture having a size sufficient for determining whether insulation is within a predetermined distance of the light fixture. The label includes an indicia signaling a user to use the aperture to make a determination whether insulation is within the predetermined distance of the light fixture and to make a lamp selection based on the determination.

Abstract: The fire-rated recessed downlight includes a mantle, and a light fixture which is fixed in the mantle, said mantle having at least one radiating hole, in which a dilatable fireproof piece is fixed. The radiating hole is connected with outside of the mantle through a radiating aperture. The radiating hole of the mantle and the dilatable fireproof piece could help to radiate the heat in ordinary situations and the dilatable fireproof piece will expand rapidly to close the radiating hole when on fire, therefore the fire inside the mantle will not spread to the outside.

Abstract: Modular service unit (10A) comprising a pair of elongate light fitting EACH comprising a reflector housing (14) having one or more light tubes (24). Either a bridging plate, or an intermediate housing (26), is releasably attached to or supported by adjacent longitudinal side edges (34) of each reflector housing (14), and forms a structural part of an auxiliary service facility. The auxiliary service facility can include, for example, air conditioning ducts or diffusers, (17A), five alarm detectors, fire sprinklers with flexible pipe connections, speakers, security sensors, and secondary light fittings. A plurality of modular service units may be incorporated in a suspended ceiling.

Abstract: Ceiling comprising adjacent luminaries (1), whereby a luminaries (1) is fixed by at least two separate fixation means. The fixation means comprising only one suspension member (2,3) connected to the center of the upper side (6) of the luminaries (1). Furthermore, there is at least one fixation member (22) connecting the luminaries (1) to an adjacent luminaries (1). The lower sides (10) of the luminaries (1) form a substantial flat surface of the ceiling.

Abstract: The fire-rated recessed downlight includes a mantle, and a light fixture which is fixed in the mantle, said mantle having at least one radiating hole, in which a dilatable fireproof piece is fixed. The radiating hole is connected with outside of the mantle through a radiating aperture. The radiating hole of the mantle and the dilatable fireproof piece could help to radiate the heat in ordinary situations and the dilatable fireproof piece will expand rapidly to close the radiating hole when on fire, therefore the fire inside the mantle will not spread to the outside.

Abstract: A metal halide lamp (10) includes a light-transmissive envelope (12) which encloses a metal halide pool (30) for generating a discharge when spaced apart electrodes (20, 22) within the envelope are supplied with an electric current. A multi-layer coating (40) is deposited on a surface (42) of the envelope. The coating includes several layers of at least two materials of different refractive index, which, in combination, reflect radiation in the UV region of the electromagnetic spectrum. Rather than optimizing the coating for a normal (i.e., 0°) angle of incidence on the coating, the multi-layer coating is optimized at an angle which is selected to be within 10° of the mean angle (?) of incidence of the UV radiation on the arctube surface, thereby increasing the amount of UV radiation which is returned to the metal halide pool.

Abstract: A lighting fixture housing includes two end caps, a reflector assembly, and a ballast box cover. The two end caps further include top and bottom flanges and mounting brackets having support tabs extending thereon. The lighting fixture housing is installed by first sliding the end caps into position at opposite ends of an opening in a suspended ceiling formed of a T-bar grid, and then attaching the reflector assembly to the end caps. The reflector assembly may be temporarily suspended from the end caps so that electrical connections to the assembly are made and the ballast box cover installed.

Abstract: A lighting fixture apparatus includes a frame portion, a louver portion and a diffuser lens. The louver portion includes a baffle system for passing unobstructed at least a portion of the light impinging thereon. The diffuser lens includes a surface for diffusing light rays. At least one directional lighting apparatus comprised of LED strips is attached to and supported by the frame portion. The LED strips are disposed between the louver portion and the diffuser portion. The LED assembly includes a rigid strip having a first end and a second end opposite the first end portion, and a first surface and a second surface opposite the second surface. A first rotary support member and a second rotary support member are connected to the strip portion at respective first and second ends. A plurality of electrical lighting elements are mounted on the first surface and are configured in at least one electrical circuit.

Abstract: A ceiling tile system comprises modular acoustic light-emitting modules which can be of a standard size to be fitted into a hung ceiling or other ceiling system in conjunction with similar acoustic light-emitting modules or conventional ceiling tiles. Each acoustic light-emitting module includes a backing panel, a cover, and a rigid spacing member extending between the backing panel and the cover, with solid state light-emitting elements such as light-emitting diodes (LEDs) arrayed within each module. The cover may be made of fabric including metallic threads to enhance the diffusion of light. In one embodiment, two arrays of LEDs are provided on respective modules. The arrays may be driven independently or together. The LEDs provide shades of white light or colored light, as desired. The cover and lighting elements may be readily removable from the backing panel for ease of maintenance.

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: Supporting device (10) for a lighting appliance comprising a frame (11) in turn comprising a tubular portion (12) which can be at least partially inserted in a housing or opening (17) of a false ceiling or wall (18). According to the invention, the device (10) comprises supporting means (20) comprising at least two levers (30) associated with the frame (11) and capable of passing, by rotation, by means of two corresponding unidirectional couplings (34, 52) from a disengagement operating position, in which they do not protrude from said tubular portion (12), to an engagement operating position in which they protrude from said frame (11) becoming coupled with said wall (18) to support the device (10).

Abstract: A lighting system includes a suspended light fixture, a skin, and a plurality of alignment sights. The suspended light fixture includes a supporting spine. The skin partially surrounds the spine. The skin is supported by the spine at at least three points including an adjustable point. The skin is substantially more flexible than the spine. The spine has a plurality of suspension points that define a longitudinal axis. The plurality of alignment sights are connected to the skin along an axis defining a leveling axis. The leveling axis is substantially parallel to and offset from the longitudinal axis.

Abstract: According to the invention, an air handling fixture is provided which can be tilted and locked at a preselected angle when mounted on a sloped ceiling so that a depending pendant tracklight is plumb or perpendicular to a horizontal floor there beneath. The fixture comprises an air handling channel including a plurality of air handling slots, a tilt and lock mechanism, the tilt and lock mechanism having an upper portion, including a toggle lock and casing, and a lower portion, including at least a light retaining component slidably adjustable through a preselected arc.

Abstract: An apparatus for lighting a building structure. The apparatus includes a pre-fabricated lighting module that mounts to the building structure. The module includes a lighting fixture having at least one lamp. The module includes a one-piece layer having at least one hole aligned with the lamp. The lighting fixture is fixed to the one-piece layer and extends outward from the one-piece layer. A method of lighting a room from the room's ceiling or wall.

Abstract: An apparatus for lighting in a building structure. The apparatus includes a lighting fixture having at least two lamps. The apparatus includes a one-piece layer having a plurality of holes aligned with the respective lamps through which light from the lamps pass. A panel for a mounted lighting fixture having at least two lamps in a building structure. A method of lighting a building. A method for forming a panel. A method for forming a panel.

Abstract: An accessory cartridge for removable reception in a specialized lighting fixture. A circular cartridge ring is provided with an internal lower flange, for supporting one or more flat, circular, disc-like accessory elements, such as filters. Retainer clips are positioned to engage at least the uppermost one of the disc-like accessory elements, such that one or more of the disc-like accessory elements may be easily installed within the cartridge ring and the entire series thereof automatically retained therein by engagement of at least the uppermost accessory element. The entire cartridge is designed to be bodily installed in or removed from the lighting fixture, to facilitate expeditious changing of accessory elements utilized with the lighting fixture. Preferentially, the lighting fixture is provided with a hingedly connected front barrel portion, which is constructed to receive and support the cartridge.

Abstract: A retractable light/sound system for mounting on the eave of a structure includes a housing and an output subassembly. A hinge pivotably interconnects the housing and the output subassembly whereby the latter is pivotable between a retracted/stored position and an extended/display position. The output subassembly includes multiple lights and/or loudspeakers and provides output in response to input power and/or control signals from any control subsystem, which can include a microprocessor adapted for preprogramming to activate the output components in response to certain, predetermined input source conditions. The system is adapted for mounting on or in soffits, or on building fascias integrally with gutters.

Abstract: A clean room ceiling light fixture formed as a sealed housing with a downwardly-directed light emitting aperture. A heat sink fixed within and spaced from the housing defines a cable raceway inside the housing. A plurality of LEDs are mounted on the heat sink. A high refractive index (polycarbonate) reflector coupled to each LED efficiently directs the LED's light through the aperture into the clean room. The LEDs and/or reflectors can be anti-reflectively coated to improve light transmission efficiency. A refractive index matching compound applied between each LED-reflector pair further improves light transmission efficiency. A spectrally selective filter material prevents ultraviolet illumination of clean rooms used for lithographic processes which are compromised by ultraviolet rays. A holographic diffusion lens and/or variable transmissivity filter can be provided to uniformly distribute the LEDs' light through the aperture.

Abstract: An overhead lighting system is formed by embedding a plurality of light elements within a support structure, such as a ceiling panel of a suspended ceiling. The light elements are preferably ultra-bright light emitting diodes (LEDs). The LEDs are mounted in the ceiling panel so that the light emitted from each LED projects from a first surface of the ceiling panel and down into a respective space.

Abstract: A retrofit fixture for installation into an existing recessed fluorescent strip fixture in an inverted T-bar grid ceiling. The retrofit fixture length is less than the length of the ceiling opening, except for hangar tabs which extend from a flange along a longitudinal edge. The fixture may be hung from the ceiling grid members by the tabs while wiring connections are made, and then swung into place. Lamps having a combined length greater than the length of the ceiling opening may be used by placing the lamp holders in a staggered arrangement.

Abstract: An improved ceiling feature and particularly a ceiling feature that can be installed easily to anchor a holding dish. It mainly includes a ceiling plate fastened to the ceiling for engaging with a bolt. A holding dish may be coupled with the bolt in the direction of the ceiling. The holding dish has elastic plates which may be depressed to wedge in the screw thread pitches of the bolt to anchor the holding dish. Then a glass shade and a cap may be coupled and a nut may be fastened to complete the installation.

Abstract: An elongate light fixture, the light fixture having an adjustable overall length, and a method of installing same. The elongate light fixture includes a first piece that includes a first reflector shroud portion and a second piece that includes a second reflector shroud portion. The first and second pieces are coupled to a frame to permit relative movement of the first and second pieces for spacing the first and second pieces at a desired distance apart to provide the desired overall length of the housing arrangement and to provide a space between the first and second pieces. The adjustable-length, elongate light fixture further includes an insert that is trimmable to fit in the space between the first and second pieces. The method of installing an adjustable-length, elongate light fixture, the method including moving a first piece, which includes a first reflector shroud, of a housing arrangement relative to a second piece, which includes a second reflector shroud, of the housing arrangement.

Abstract: A recessed light fixture includes a housing, a cap affixed to an upper edge of the housing, and a cover plate having an aperture formed therein and affixed to a lower edge of the housing. A junction box and transformer having associated wiring are affixed to the cap. Mounted within the housing of the recessed light fixture is a reflector having opposing first and second reflector surfaces, a first end, a second end, and a prism having at least one diverging lens. The prism is slidingly moveable within the second end of the reflector. A bulb is electrically connected to the transformer and mounted within the housing and protruding through an opening in the first end and thereby into an upper portion of the reflector. The first and second reflector surfaces are formed having a preselected parabolic geometry so that a light beam is narrowest at a preselected limit of travel of the prism closest to the bulb, and widest at a preselected limit of travel of the prism farthest away from the bulb.

Abstract: An apparatus for lighting which fits into a wall, ceiling or floor. The apparatus includes a housing having a bottom edge and at least one mechanism for holding a light. The housing having a depth. The apparatus includes a frame having an opening having a width larger than the depth,through which the housing can fit. The housing fits about the frame wherein the bottom edge is hidden by the frame. A method for lighting. The method includes the steps of placing a frame having an opening into a space in a ceiling of a room. Then there is the step of introducing a housing through the opening in the frame into the ceiling. Next there is the step of fitting a bottom edge of the housing about a ridge of the frame which extends inwards into the ceiling wherein the bottom edge is hidden by the frame. Then there is the step of setting at least one mechanism for holding a light in the housing.