Abstract: In an integrally embedded AC/DC double-headed lamp, at least one illuminative element is disposed on a lamp board, two sides of the light board are respectively disposed with a conductive terminal used for letting in a lamp seat to electrically connect to the lamp seat and an integrally formed cover body is used to cover the illuminative element directly thereby reducing the processing time and elevating the production efficiency, further attaining to the cost reducing object. Furthermore, the illuminative element is allowed to generate a different illumination effect through a different cover body to provide a user with different illumination and decoration uses.

Abstract: A horticultural light system integrating a grow lamp and lamp ballast within a single fixture. The grow lamp is enclosed by the lower exterior structure and benefits from cooling atmosphere that is forced through the lower exterior structure to regulate the grow lamp temperature. The lamp ballast is mounted to a ballast plate above the lower exterior structure. The ballast plate shields the lamp ballast from the heated atmosphere as it rises off the top of the lower exterior structure. Stand offs or other separation means keep the ballast plate at a distance from the top of the lower exterior structure to create an air gap that thermally isolates the lamp ballast from the heat generated by the grow lamp, thereby increasing the reliability and life of the lamp ballast.

Abstract: The invention concerns a headlamp for vehicles with a reflector comprising a reflector opening for receiving a gas discharge lamp, with an ignition device for operating the gas discharge lamp, with holding means for releasably connecting the ignition device to a reflector, with electromagnetically compatible contact means arranged between the ignition device and the reflector, wherein the holding means includes a holding element which together with the ignition device and the gas discharge lamp forms a common unit, and the electromagnetically compatible contact means is integrated in the holding element, in such a way that, in a locking position of the holding element with the reflector, there is an electrically conductive connection between the ignition device and the reflector.

Abstract: In a discharge lamp lighting apparatus for lighting a lighting system using a discharge lamp, a housing used for containing a printed circuit board on which a discharge lamp lighting circuit is mounted is formed by resin molding. In order to put out wires connected to the printed circuit board from an inside to outside of the housing, protruding portions are protruded outward from upper end portions of a front face and a rear face of side walls of a base member which constitute the housing, and wire putting grooves are formed on upper faces of the protruding portions. Furthermore, reinforcing ribs are provided for coupling the protruding portions and portions of the side walls except the protruding portions so as to reinforce mechanical strength of the protruding portions by the reinforcing ribs.

Abstract: An apparatus, system, and method are disclosed for replacing an incandescent lamp with a ceramic metal halide (“CMH”) lamp in a framing projector. A CMH base is connected to a framing projector body at a connection for an incandescent lamp base for an incandescent lamp. The CMH base positions a CMH lamp relative to a focal point of a reflector within the framing projector body. The CMH lamp is plugged into a CMH socket on the CMH base and the framing projector body includes an opening and connection for an incandescent base holding an incandescent lamp relative to the focal point. A CMH ballast for the CMH lamp is included and is connected to the CMH base and to an electrical connection of the incandescent lamp base.

Abstract: A through hole that is slightly larger than a size of a rear end of a transformer container is formed in a rear cover constituting a part of an external wall of a starting circuit unit. The transformer container houses therein a transformer and constitutes a transformer portion. The transformer portion is assembled such that a rear end of the transformer container projects from the through hole. This allows the transformer container to constitute a part of the external wall of the starting circuit unit.

Abstract: An integrated projector for discharge lamps includes a projector, having a discharge lamp, and a support fork shaped structure for the projector. The fork shaped structure provides two substantially vertical elements, provided laterally with respect to the projector, and a horizontal arm, joining the lateral elements. In the substantially vertical elements of the fork shaped structure are provided the elements of a voltage limiting system, or ballast. Through the horizontal arm passes the electrical connection cables of the various components of the ballast provided in the two substantially vertical elements. A power supply is provided between one of the substantially vertical elements of the fork shaped structure and the projector electrical connection.

Abstract: There is disclosed an electronic apparatus which comprises a circuit module, a tray, and a filling material. The module comprises an electric insulating circuit board, and a plurality of electric components mounted on the board. The tray houses the module. The tray includes a raised bottom formed to project toward the circuit board. The filling material has waterproof properties and electric insulation. The circuit board and the electric components are buried to fill the tray with the filling material.

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: A reflector assembly for use in a digital projector includes a reflector having a reflector opening defined therein, and a startup element fixedly coupled to the reflector such that the reflector and the startup element are configured to allow the replaceable coupling of a lamp assembly to the reflector assembly.

Abstract: A high power light string device comprises a plug with a plug blade set, a tail receptacle, and at least an LED string, wherein a first power adaptor disposed in the plug converts an AC voltage through the plug blade set to a high DC voltage, and a second power adaptor disposed in the tail receptacle converts the AC voltage through the plug blade set to a low DC voltage. Two ends of the LED string are respectively connected to the first and second power adaptors to receive the high and lower DC voltages so that the LED string is turned on to emit light. The power adaptors are directly disposed respectively in the plug and the tail receptacle to simplify the whole light string device so as to enhance the decorating effect of the light string device.

Abstract: A lighting assembly with a lamp housing and a component housing which have corresponding mechanical connectors for releasably attaching the housings to one another and which have corresponding electrical connectors for releasably providing electrical connection between the housings. The lamp housing has a lamp frame, at least one lamp socket for receiving at least one lamp and lamp wiring for supplying power to the at least one lamp. The lamp housing has an electrical connector operably attached to the lamp wiring. The lamp housing further has a mechanical connector. Mounted to the component housing are electrical control components, electrical ballast and a power supply socket. The component housing has an electrical connector operable to releasably connect with the electrical connector of the lamp housing. The component housing has a mechanical connector operable to releasably attach to the mechanical connector of the lamp housing.

Abstract: An integrated fluorescent lamp device for use with a lamp fixture including a lamp socket configured to removably receive a portion of the integrated fluorescent lamp device therein to selectively support the integrated fluorescent lamp device thereon, the integrated fluorescent device comprises an enclosure to house an electronic ballast coupled to a lamp base affixed to the enclosure having a pair of mounting members formed on opposite sides thereof configured to be removably received in the lamp socket obversely configured to secure the integrated fluorescent lamp device to the lamp fixture and a fluorescent lamp affixed to the enclosure including a spiral shaped glass tube containing a gas electrically coupled to the electronic ballast such that when a switch mounted on the lamp fixture is in the on position electricity flows from an AC power source through the lamp base, electronic ballast and fluorescent lamp to energize the gas within the spiral shaped glass tube.

Abstract: A circuit arrangement is for operating at least one light-emitting diode LED in an electrical circuit at a service voltage greater than the forward voltage of the at least one light-emitting diode. The light-emitting diode is PWM-controlled. The circuit includes reactances that are connected in series at both connections of the light-emitting diode, an additional switching arrangement between the terminals, and a full-wave rectifier circuit, such that the circuit is protected against short-circuits on the service voltage and on ground while the LED can continue to be triggered.

Abstract: A luminaire has a ballasting circuit assembly for a gas discharge lamp, with an input power connector assembly suitable for receiving and connecting with a mating multi-conductor connector assembly. A ballasting circuit in the ballasting circuit assembly is suitable for powering a gas discharge lamp. Output leads suitable for connecting to a gas-discharge lamp socket with the wiring therefore are contained within the luminaire.

Abstract: A retrofit HID lamp assembly, for use in a non-HID lighting receptacle, to provide HID illumination. The lamp assembly includes (i) a housing of a non-HID lamp assembly, (ii) a base terminal structure coupled with the housing, and compatible with such non-HID lighting receptacle, (iii) a ballast unit in the interior of the housing, (iv) a reflector overlying the ballast unit in the interior of the housing, (v) an HID lamp mounted in the interior of the housing so that light generated by the HID lamp is reflected by the reflector, with the HID lamp being electrically coupled with the ballast unit, and (vi) a lens coupled with the housing. A corresponding fabrication methodology is described. The retrofit HID lamp assembly may be used to retrofit existing lighting installations, such as PAR receptacles in exterior aircraft lighting systems, to cost-efficiently improve the illumination provided by such systems.

Abstract: A headlight apparatus has a lighting element with a connector base disposed in an aperture formed in the lighting element. The connector base has a set of terminals arranged to make contact with a set of electrical contact zones of a complementary module. Each electrical contact zone is so disposed, on a surface portion of an electronic printed circuit of the complementary module, as to be directly accessible for the corresponding terminal.

Abstract: A locking assembly for a ballast housing simply and easily locks a lid to a body of the housing. The body has a first base and a first wall extending upwardly from the first base. The lid has a second base and a second wall extending downwardly from the second base. A tab extends outwardly from the first wall. A fastener is pivotally disposed in an opening in the tab, and has a head adapted to receive a rotating device. A third base extends outwardly from the second wall. A slot in the third base is adapted to receive the fastener. A nut is threadably disposed on the fastener and the fastener is rotatable through the nut to engage the fastener head with the tab and to engage the nut with the base to tightly secure the lid to the body.

Abstract: Lighting or indicating apparatus for a motor vehicle comprises in particular a light emitting element which includes a reflector, a light source, and a casing which defines a set of faces, comprising side, lower and upper faces. There is, optionally, at least one opening formed in at least one of the said faces and having removable obturating means. The lighting or indicating apparatus is adapted to be combined with at least one complementary module with the aid of at least one pair of assembly elements comprising a guiding slide and a projecting element. The projecting element is adapted to be inserted at least into one end of the guiding slide with which it is associated, and to slide in the said guiding slide. Each of the assembly elements of one pair of assembly elements is disposed either on the headlight element or on the module. The two assembly elements in one assembly pair are not both disposed on the light emitting element; nor are they both disposed on the module.

Abstract: A decorative light strand has user-selectable color schemes corresponding to each holiday for year-round use. The light strand has a plurality of differently colored lights; a decorating selector comprising a switch which provides a plurality of user-selectable settings; and logic coupled to the switch and the plurality of differently colored lights to provide different holiday color schemes in response to the user-selectable settings. In one specific example, the light strand includes a plurality of red lights, a plurality of white lights, a plurality of blue lights, a plurality of green lights, a plurality of orange lights, and a plurality of yellow lights.

Abstract: An overhead luminaire includes an externally accessible plug-in starter module that is electrically connectable to a starter receptacle located within a luminaire housing without having to open the housing and without the need for tools.

Abstract: A reflecting-mirror-equipped lamp 2000 is constituted by a high pressure discharge lamp 150 and a reflecting mirror 300. The reflecting mirror 300 includes a wide opening 310 and a narrow opening 320. A first sealing portion 101a of the high pressure discharge lamp 150 is fixed near the narrow portion 320 of the reflecting mirror 300, and provided with no base. A second sealing portion 101b of the high pressure discharge lamp 150 is provided at a side of the wide opening 310 of the reflecting mirror 300. An external lead 104 of the first sealing portion 101a and an outward-drawn lead wire 204a are joined to each other by the plastic flow of a caulking member 10.

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 xenon arc searchlight incorporates a high frequency/high efficiency electronic circuit that allows lamp ballasting and charging of the system battery to occur over a wide range of external DC power supplies. The xenon arc searchlight has a converter circuit coupled to both the battery, the ballasting circuit and the arc lamp for converting DC voltage from the battery to pulse width modulated switched current to the arc lamp in which the DC voltage is switched by parallel switching transistors. The ballisting circuit is controllable by a switch to vary current supplied to the converter circuit and hence intensity of the lamp which discrete steps in intensity of the lamp are not visually perceptibly different between one step to a next step in the sequence of steps of the current to the lamp. The lamp, ballast, battery and charger are provided in a single rugged package.

Abstract: A xenon arc searchlight or illumination system incorporates a quick change release and assembly so that the lamp, reflector and battery assemblies are easily field replaceable without tools. The lamp, ballast, battery and charger are provided in a single rugged package which can be sealed for field use. The searchlight is combined by an appropriate mounting adaptable with other optical detector devices such as cameras, binoculars and night vision telescopes. The beam output is similarly usable with a combination of filters to allow the most varied intensity and wavelengths for a particular application, such as smoke filled environments, surveillance employing near-infrared or infrared illumination, ultraviolet, underwater illumination or illumination with any color in the visible range.

Abstract: An inclined engagement surface of an elastic engagement hook is elastically engaged with an engaged section in a state of being inclined with respect to a roof panel. As a result, it is possible to absorb an error of a three-dimensional relative positional relation between the elastic engagement hook and the engaged section. That is, the error of the relative positional relation in two directions (an X direction and a Y direction in FIG. 5B) can be absorbed by a deflection of the inclined engagement surface, and the error of the relative positional relation in remaining one direction (a Z direction in FIG. 5B) can be absorbed by a slip between the inclined engagement surface and the engaged section.

Abstract: A color separation disc assembly combinable with an article formed of optical fibers. The assembly has a color separation disc that is able to rotate along with a shaft of a motor for generating different colors on ends of optical fibers by separating light emitted from a light source therethrough. A lightning ball is adjacent to the article and electrically connected to a high voltage generation circuit for generating lightning therein, enabling the article to have a colorful appearance within a dazzling environment.

Abstract: A luminaire for ceilings, which permits improved packing density for warehousing and shipping. The reflector of the luminaire is designed to permit it to be shipped in a flattened or nested state. This increases the packing density and eliminates shipping and warehousing boxes whose volume is 95% air. An assembled luminaire comprises three or four parts: the reflector, a ballasted-socket, a lamp, and an optional diffuser or lens. The reflector, ballasted-socket, lamp, and optional lens are either shipped separately in bulk packs or shipped in kits containing the one or more sets of components to build the luminaire. When the luminaires are installed at the job site, a ballasted-socket is inserted into a mounting aperture in the reflector; a lamp is inserted into the ballasted-socket; the ballasted-socket is connected to a power source, and the assembly is placed into the ceiling opening.

Abstract: A high pressure discharge lamp 1A has a light emitting vessel 2A made of a semitransparent ceramic material and having a pair of end portions 2a each with an opening formed in the end portion and a light emitting portion 2a, a pair of discharge electrodes 5, and electrode supporting members 4 each supporting the electrode 5 and fixed to the end portion 2a. The vessel 2A defines an inner space 6 with an ionizable light emitting substance and starter gas filled in the inner space 6. The electrodes 5 are contained in the inner space 6. The light emitting portion 2b has a thicker portion 2g and a thinner portion 2c. The thinner portion 2c has a cross sectional area of not smaller than 35 percent and not larger than 80 percent of that of the thicker portion 2g so that the light emitting portion 2b has a brightness center 9 in the thinner portion 2c.

Abstract: The present invention relates to a lamp device using a high-pressure vapor discharge lamp, particularly to an improvement for controlling the influence of the generation of heat, which accompanies an increase in lamp power and a reduction in the size of a reflector. A lamp device of the present invention comprises a discharge lamp having an arc tube enclosing luminescent materials and having a pair of opposing electrodes disposed therein and a pair of sealed portions extending from the arc tube; a reflector which reflects light radiated by the discharge lamp; a transparent member covering an open end of the reflector and accommodating the discharge lamp in a space between the transparent member and the reflector; and means for preventing an excessive temperature rise wherein the temperature rise of welded parts of wiring members electrically connected to the electrodes of the discharge lamp is restricted.

Abstract: A lighting fixture includes a socket that operatively receives a light bulb, lamp, or light source. A means for receiving electrical power is provided. A cylindrical capacitor is at least partially secured to the lighting fixture by at least one wire tie via a plurality of holes arranged in a mounting surface of the lighting fixture. Preferably, the cylindrical capacitor includes a rim. The mounting surface includes a retaining tab arranged thereon and a slot formed therein. The retaining tab cooperates with the slot to partially secure at least a portion of the capacitor rim. The secured rim portion further cooperates with the at least one wire tie to operatively secure the capacitor to the mounting surface of the lighting fixture.

Abstract: A light source for testing sites using a fluorescent dye is described. The light source can include a low voltage lamp or a low heat generating lamp.

Abstract: A portable stack lamp includes a base supported by a supporting device, such as an extensible tripod and a plurality of rolling wheels, two or more lamp units stacked up to form a stack-up lamp body mounted on said base, and a cover which is adapted to cover a top opening of the housing of the lamp unit having a handle affixed thereon. The portable stack lamp is arranged to provide 360 degrees illumination so as to produce luminous beams in all directions while the user is able to selectively increase or decrease its luminous intensity by simply stacking up more or less lamp unit easily anytime. Therefore, the portable stack lamp can illuminate the surrounding that not only minimizes the number of work lamps to be used but also saves both the electrical energy and illumination cost.

Abstract: A discharge bulb and a discharge bulb-lighting device are connected together by a power supply cord via an opening. A waterproof wall of a cylindrical shape is formed on and projects from a portion of the body disposed near a peripheral edge of the opening. Positioning ribs are formed on and project from a portion of the body disposed with surrounding an outer surface of the waterproof wall. A waterproof rib of a cylindrical shape, which is smaller in diameter than the waterproof wall, is formed on the discharge bulb-lighting device. Restraint portions for contacting with inner surfaces of the positioning ribs are formed on the discharge bulb-lighting device. The discharge bulb-lighting device is fastened by screws to the body, with an O-ring held between the waterproof rib and the waterproof wall and also with the restraint portions held in contact respectively with the inner surfaces of the positioning ribs.

Abstract: A structure that ensures air tightness and waterproof performance of a cord insertion hole in a back cover of a lamp body. The arrangement allows a reduction of man hours for fixing a power supply cord to the back cover. In an implementation, a cylindrical outer wall 702 is provided that surrounds cord insertion holes 704a, 704b through which power supply cords 6a, 6b are inserted for sending current to light source bulbs 1a, 1b. A resin mold portion filled inside the outer wall fixes and integrates the power supply cords 6a, 6b in the cord insertion holes 704a, 704b. The resin mold portion includes a lower mold layer 9a on the side of the cord insertion holes 704a, 704b that adheres well to the back cover 7, and an upper mold layer 9b laminated over the lower mold layer 9a and having good heat resistance properties. The upper mold layer 9b prevents creep in the lower mold layer 9a, and the lower mold layer maintains air tightness and waterproof performance at the cord insertion hole.

Abstract: A display system comprising a high-intensity discharge lamp system equipped with a stabilizer, a reflector mirror coated with a heat-absorption film, a shutter, and a light-gathering lens; and a pole holding the high-intensity discharge lamp system at a desired height above the road or its vicinity. The display system of the invention enables drivers to easily see and locate the centerline, road shoulder, crosswalk, and traffic signs, even in the midst of rainstorm, dense fog, or blizzard.

Abstract: In a discharge lamp apparatus, a casing of an electronic controller unit for a discharge lamp is comprised of a resin casing and a metal casing and accommodates therein circuit components for generating a voltage supplied to the discharge lamp. The resin casing couples with and contacts with the connector part of the discharge lamp. A power MOS transistor is attached to the metal casing through a plate member made of an insulating material. With this arrangement, heat generated by the discharge lamp is less likely to transfer from the resin casing to the metal casing, and heat generated by the power MOS transistor is efficiently radiated from the metal casing to the outside.

Abstract: A xenon arc searchlight or illumination system incorporates a high frequency/high efficiency electronic circuit that allows lamp ballasting and charging of the system battery to occur over a wide range of external DC power supplies. The tolerance to variations in the system battery voltage as well as external battery voltage are increased by providing logic control of the converter circuit through a programmed logic device. The intensity of the arc lamp is smoothly decreased or increased in a continuous manner from a maximum intensity to a minimum intensity beam. Ignition of the lamp at its minimum illumination levels is thereby permitted. The xenon arc lamp is uniquely oriented within the searchlight with respect to the reflector to provide the most concentrated and convergent field of illumination on which the lamp is capable, namely with the anode of the lamp turned away from the forward beam direction in the reflector.

Abstract: In a headlamp for a vehicle, a lighting control circuit unit is provided in a lamp housing. The lighting control circuit unit is fixed to a holder with screws and the holder is fixed to a rear surface of a reflector with screws. A discharge lamp bulb is held on the reflector. The discharge lamp bulb is directly connected to the lighting control circuit unit. The lighting control circuit unit is removable through an opening of the lamp housing in a state that the discharge lamp bulb is held on the reflector. Also, the discharge lamp bulb is exchangeable through the opening.

Abstract: The present invention discloses a backlight including external electrode fluorescent lamps and a method for driving the backlight. The backlight includes fluorescent lamps having external electrodes made of an electrically conductive material for wrapping the outer peripheral surfaces including edge cross-sections on both ends of a glass tube with a layer of fluorescent substance applied thereon. The backlight is constructed in a manner that a plurality of such fluorescent lamps are installed at the outer portions of a plastic light guide, and an alternating current type power source is applied from the outside to the fluorescent lamps by installing a plurality of the fluorescent lamps between a reflecting plate and a diffusing plate and electrically connecting them with one another.

Abstract: An overhead luminaire includes an externally accessible plug-in starter module that is electrically connectable to a starter receptacle located within a luminaire housing without having to open the housing and without the need for tools.

Abstract: A lighting fixture in which a subhousing for a ballast circuit is disposed between two spaced portions of a bottom plate and a top plate. Sockets are connected to the respective ends of the plates for receiving at least one bulb.

Abstract: A discharge bulb and a discharge bulb-lighting device are connected together by a power supply cord via an opening. A waterproof wall of a cylindrical shape is formed on and projects from a portion of the body disposed near a peripheral edge of the opening. Positioning ribs are formed on and project from a portion of the body disposed with surrounding an outer surface of the waterproof wall. A waterproof rib of a cylindrical shape, which is smaller in diameter than the waterproof wall, is formed on the discharge bulb-lighting device. Restraint portions for contacting with inner surfaces of the positioning ribs are formed on the discharge bulb-lighting device. The discharge bulb-lighting device is fastened by screws to the body, with an O-ring held between the waterproof rib and the waterproof wall and also with the restraint portions held in contact respectively with the inner surfaces of the positioning ribs.

Abstract: A circuit for operating an alternating current high pressure gas discharge lamp for a motor vehicle is described. The circuit includes a ballast, a superimposed pulse starter, a symmetrical lamp filter and a high pressure gas discharge lamp which is surrounded at least partially by a reflector, the symmetrical lamp filter being arranged between the high pressure gas discharge lamp and the superimposed pulse starter, with a filter capacitor arranged in parallel with the high pressure gas discharge lamp and with one reactance coil arranged in each of the connecting lines between this parallel circuit and the starter circuit, and with two lamp power supply lines at the input of the starter circuit, a capacitor being arranged between the reflector and at least one of the lamp power supply lines.

Abstract: A luminaire is provided with a reflector, a lamp body, a discharge lamp, an igniter, a lighting circuit including an inverter, and a socket, wherein both of the igniter and lighting circuit are disposed in the socket, the discharge lamp is fixed to the socket, the socket is fixed to the reflector, and the discharge lamp is housed in the reflector, whereby it is enabled to attempt a reduction of constituting parts of the lighting circuit in the luminaire and, in particular, to attempt an improvement in assembling workability of the luminaire.

Abstract: The present invention is a hazardous location induction lighting fixture. The light fixture has a tank having a base with parametrically side walls terminating at a rim to define the interior portion. The interior portion further includes at least one tank extension extending from the base to support a ballast plate. A ballast plate is used as a heat sink to which a induction light assembly is attached. The induction light assembly is electrically connected to an induction lamp which is positioned on the outer of the tank to emit light. A refractor assembly is selectively securable to the tank to enclose the induction lamp and in a preferred embodiment can be sealably secured to the tank to prevent fluids or dusts from entering the lamp.

Abstract: An illumination system for delivering light includes a light source, a reflector including a reflective surface adapted to reflect visible light from the light source and to allow heat energy to pass through the reflector, and a housing. The housing includes a base defining a first cavity and a heat dissipation portion extending from said base and defining a second cavity with an opening extending therebetween. The housing is adapted to support the light source and provides a thermal barrier between the housing and the light source. The heat dissipation portion is adapted to transfer heat energy from the reflector to a surrounding environment. A ballast is mounted to the housing to supply power to the light source and a cap is mounted to the heat dissipation portion and is adapted to interconnect the heat dissipation portion to an optical light distribution system.

Abstract: An automotive headlight with a high-pressure gas discharge lamp arranged inside a reflector contains an electronic ballast in a housing for operation of the high-pressure gas discharge lamp. The housing dissipates heat generated by the electronic unit in particular and possibly also by the high-pressure gas discharge lamp and provides an electromagnetic shield against any resulting electronic radiation. Cooling ribs may be provided on the housing to aid in heat dissipation.

Abstract: A luminaire assembly (10) using a double-ended, unshielded high intensity discharge (HID) light source (100). In one aspect, the assembly (10) includes a light source mount (22) adapted to manually, without tools, mount and remove the HID light source (100). The light source mount (22) can optionally include structure (106L and R, 134L and R) to automatically position the light source (100) in a desired orientation. In another aspect, the assembly (10) includes a connection (104L and R, 304L and R, 306L and R) adapted to manually, without tools, connect the light source (100) to electrical power, the connection (104L and R, 304L and R, 306L and R) can be configured to have no electrically conducting surfaces directly exposed or accessible to human fingers and can be configured to be positioned relatively away from the light source (100).

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.