Abstract: A lamp with a built-in lamp which is inserted into a base via a mounting clip and is surrounded by an enveloping bulb. The base and the enveloping bulb are joined via a joining compound or using a clamping technique. The mounting clip has securing elements, via which the enveloping bulb is held on the base once the joint has loosened.

Abstract: A lighting unit includes a fire resistant housing (11) that is adapted to be mounted within an aperture in a partition (2). The housing (11) is made from a material that has a melting point in excess of 1000° C. and has a front side and a rear side. An LED lighting element (17) is mounted within the fire resistant housing on the front side thereof, and a heat sink (21) is mounted on the rear side of the fire resistant housing. The lighting element (17) and the heat sink are mounted in thermal contact with the fire resistant housing to dissipate heat generated in use by the lighting. Heat generated in use by the lighting element (17) is transferred by conduction to the heat sink (21) via the fire resistant housing (11).

Abstract: A lighting unit includes a housing, a lamp fixture configured to be coupled to the housing, an element extending from the lamp fixture and configured to be received in the housing, and a sealing member defining an aperture for receiving the element therethrough. A periphery of the aperture forms a fluid-tight seal around the element. In another aspect, a lighting unit includes a housing and an enclosure coupled to the housing and configured to define an interior space, wherein the interior space is sealed from an interior of the housing. In another aspect, a method for sealing a lighting unit includes providing a housing, an enclosure coupled to the housing, and an opening in the housing in communication with the enclosure, placing a seal between the housing and the enclosure, and applying a sealing member to the opening to seal the opening.

Abstract: A luminaire system provides for mounting and accessing a light fixture housing without tools. A universal bracket is coupled to the junction box along the ceiling and engages with a top mounting plate affixed to the housing. One or more slide hooks appended to the universal bracket allows the top mounting plate to mount to the universal bracket, and a reinforced spring and locking spring keeps the light fixture housing in place, while preventing rattling between the universal bracket and the top-mounting plate. The housing can be removed from the electrical junction box through the use of a release button affixed to the housing. The button disengages the locking spring from the top mounting plate, thereby allowing the housing to swivel away from the universal bracket and junction box by way of a hanging hook. The hanging hook supports the housing when released from the universal bracket.

Abstract: A lamp with a built-in lamp which is inserted into a base via a mounting clip and is surrounded by an enveloping bulb. The base and the enveloping bulb are joined via a joining compound or using a clamping technique. The mounting clip has securing elements, via which the enveloping bulb is held on the base once the joint has loosened.

Abstract: A lighting fixture having a housing with a main body, and a primary light source disposed beneath a cover secured thereto with a latching mechanism. The light fixture may include a reflector suspended above the main body on a pair of struts. The latching mechanism is engaged by pivoting at least one exterior wall of the housing to provide tool-less access to the light source. In an alternative embodiment, the main body attaches to a mounting arm and a wall mount housing with a secondary adjustable light source.

Abstract: An LED lamp includes a heat sink having a planar base, a plurality of LED modules attached to a bottom face of the base, an envelope disposed on the bottom face of the base and covering the LED modules, and a lamp bracket securing the base and the envelope together. The lamp bracket includes a vertical frame which defines an opening at a lateral side thereof, an engaging flange extending from an inner face of the frame and supporting a fixing flange of the envelope, and a plurality of protrusions projecting from the inner face of the frame above the engaging flange and pressing the base downwardly towards the envelope. The base of the heat sink and the envelope are inserted into the vertical frame through the opening.

Abstract: A lighting assembly is provided having a main housing and retaining member hinged to the main housing. The housing has an open end with a channel for receiving and supporting a lens, diffuser and/or grate. The retaining member is hinged to close the open end of the housing and prevent removal of the lens, diffuser and grate. The retaining member is coupled to the housing by pivot pins that are received in elongated slots in the side of the housing. The retaining member is pulled away from the housing where the pivot pins slide to an outward end of the slot and then pivot in an upward or downward direction to allow removal of the lens, diffuser and grate.

Abstract: An in-grade light fixture has a lamp compartment having an open upper end with a lens cover covering the open upper end. The lens cover may have a joint connection to permit travel from an open configuration to a closed configuration. A junction box is adjacent to the lens cover along an upper portion of the compartment. If a ballast is utilized for proper supply of power to the lamp, a ballast compartment is adjacent an open lower end of the lamp compartment. A hydraulic isolation chamber extends vertically downward from the junction box to the sealed ballast compartment. The hydraulic isolation chamber is filled with a potting material and prevents wicking of moisture into the ballast compartment.

Abstract: An in-grade light fixture has a lamp compartment having an open upper end with a lens cover covering the open upper end. The lens cover may have a joint connection to permit travel from an open configuration to a closed configuration. A junction box is adjacent to the lens cover along an upper portion of the compartment. If a ballast is utilized for proper supply of power to the lamp, a ballast compartment is adjacent an open lower end of the lamp compartment. A hydraulic isolation chamber extends vertically downward from the junction box to the sealed ballast compartment. The hydraulic isolation chamber is filled with a potting material and prevents wicking of moisture into the ballast compartment.

Abstract: A suspended light fixture includes a housing having first and second members configured to engage one another in a closed position and disengage from one another in an open position. For example, one member can include a cover, and the other member can include a housing body. The housing contains at least one internal component coupled to one of the members. The first member is configured to receive at least one cable. At least one cable gripper is coupled to the first member. Each cable gripper is slidable along a corresponding cable in a first direction and configured to only allow movement of the cable gripper in a second, opposite direction, upon operation of a mechanism. Movement of the cable grippers in the first direction causes corresponding movement of the first member, towards the open position. In the open position, the internal components are accessible for maintenance or another activity.

Abstract: A wall luminaire is described having a housing intended for the reception of the electrical components and having at least one light permeable element mounted to the housing whose special feature consists of the fact that light generated by a plurality of LEDs with an associated optical system or by a fluorescent lamp arrangement is guided in bundled form between two surfaces which are disposed in the sidelight region of the light beam.

Abstract: A lamp cover assembly for a recessed light fixture assembly is provided. The light fixture has a socket for receiving an electrical light bulb and a canister housing for housing the bulb of the light fixture assembly. The canister housing has an opening for allowing the passage of light through the opening. The lamp cover assembly includes a lens body that is substantially translucent to allow the passage of light through the body and is configured to cover the opening so that the light bulb of the light fixture assembly is generally concealed from view through the opening. A light fixture engagement portion for engagement with the light fixture assembly is provided with the lamp cover assembly so that the lamp cover may be selectively engaged and disengaged from the light fixture assembly.

Abstract: Illumination device (20) for box-like or chest-like items of furniture having a body, which is provided with at least one door or flap, which can be pivoted between a closed position and an open position in relation to the body or a withdrawable part, for example a drawer or the like, which can be displaced between a closed position in which it is pushed into the body and an open position in which it is withdrawn from the body. The illumination device (20) has a holder, which can be connected to an electrical current source, for an illumination means (40), wherein a switch, which interrupts or opens the electrical connection in the event of a predetermined position of the door or flap or withdrawable part in relation to the body, is provided in the electrical connection between the current source and the illuminations means.

Abstract: A holiday lights device for use on a building during the holiday season is provided. The holiday lights device comprises an elongated bracket railing having a first end, a second end, a front surface, and a rear surface. A securing mechanism secures the bracket railing to the building. A first latch is secured to the front surface of the bracket railing with the first latch having a first opening and a second latch is secured to the front surface of the bracket railing and spaced from the first latch with the second latch having a second opening. A light railing is provided having a first end, a second end, a front surface, and a rear surface. A first slider bracket is pivotally secured to the rear surface of the light railing and a second slider bracket pivotally secured to the rear surface of the light railing and spaced from the first slider bracket.

Abstract: An LED assembly can effectively prevent static electricity from accumulation, comprises an LED module, a grounded support and two fasteners extending through the LED module into the support. The LED module comprises a printed circuit board having a metal substrate and two insulating layers formed on the substrate, and a plurality of LEDs mounted on the printed circuit board. Each fastener has a plurality of teeth extending downwardly through the insulating layer to abut against a top face of the substrate, to thereby electrically connect a top face of the insulating layer and the substrate.

Abstract: A method for mounting an LED module on a support comprises providing an LED module comprising a printed circuit board and multiple LEDs mounted on the printed circuit board, a support and a plurality of fasteners, each fastener comprising a head, a pole extending downwardly from a bottom of the head, and a plurality of teeth protruding downwardly from the bottom of the head and surrounding the pole, extending the fasteners through the printed circuit board of the LED module into the support, rotating each fastener such that the teeth thereof scrape insulating layers off a metal substrate of the printed circuit board, whereby a top face of the substrate is exposed and in direct contact with the teeth of the fasteners.

Abstract: An LED lamp structure includes a light-transmitting tube, a light-emitting module and two LED lamp adapters. The light-emitting module is received and positioned in the light-transmitting tube, and the two LED lamp adapters are respectively positioned on two opposite ends of the light-transmitting tube. Each LED lamp adapter includes a first assembly, an adapter element and a second assembly. The first assembly has a first hollow body and a plurality of first retaining portions. The adapter element has a substrate, and a plurality of second retaining portions selectively corresponding to the first retaining portions, at least two electrode pins passing through the substrate and combined with the substrate. The positions of the two front ends of the at least two electrode pins relative to the first assembly are adjustable by selectively mating the first retaining portions with the second retaining portions.

Abstract: An integral HID reflector lamp may be formed with an HID held in a reflector. An inner element is mechanically coupled to the reflector. The inner element is formed with a first mechanical coupling to mate with the reflector, a second mechanical coupling to mate with a circuit board, and an electrical coupling to at least electrically couple one of the leads to the circuit board. A circuit board has an edge mechanically coupled to the inner element and electrically connected to the leads by an electrical coupling on the inner element. A heat sink spans at least one side of the circuit board and forming an EMI shielding. An outer cover encloses the heat sink, circuit board, and inner element and coupled to the assembly of the reflector, HID lamp, inner element, and heat sink with each elements of the assembly clipped together.

Abstract: A light fixture comprises a housing configured to store a plurality of light bulbs therein, wherein at least one of the light bulbs is located in a non-illumination position within the housing. The light fixture may also comprise an openable door such that at least one light bulb is coupled to the door. The light fixture may also comprise an actuatable mechanism that releases the light fixture from a fixed position when actuated to enable variable positioning of the light fixture.

Abstract: A lighting system has a sealable housing with a lamp cavity, a junction box and a partition wall there between with the junction box being laterally from beneath a lens opening. The system further includes a closure to close an access port in the partition wall which includes a conical wall with a circular plate truncating the wall. The plate extends across the bottom of the housing and a vertically extending sealing flange receives the closure. A ballast assembly is also located from beneath the lens opening. A formed seal is positioned about a lens which extends inwardly to capture optic components beneath the lens. A locking ring is restrained from compressing against the mounting flange of the lens. A lighting system employing an LED board array and LED power control includes a heat sink beneath the board array extending downwardly to a radiator for transfer of heat from the array downwardly to the lamp cavity for dissipation.

Abstract: Locking clips are provided for attaching a lamp assembly in a traffic signal housing. The clips use a fixed first portion and a movable second portion. The second portion locks to the first portion or to the housing itself and retains an edge of the lamp assembly, holding it in a window of the housing. Foldable/hinged interlocking clips are provided. Other alternatives include slidable clips that engage a fixed element on the housing (e.g. a fixed pin, or a trough in the housing wall), and rotatable clips that engage a fixed element on the housing (e.g. a fixed pin, or a trough in the housing wall). The clips may be part of a retaining system or a traffic signal. Optional lower holders may also be provided. The invention also includes a method for replacing a lamp assembly in a traffic signal housing with at least one locking clip.

Abstract: An assembly has a faceplate having inwardly extending pins and a housing having holes for receiving said inwardly extending pins. Vibration resistant means is provided for locking the faceplate to the housing.

Abstract: A lens for a wet environment lighting device that has a fixture with an interior that has an opening, and at least one light source located within the fixture interior. Light from the light source proceeds out through the opening. The lens is for location in front of the fixture and the light source located therein and the lens encloses the opening from the wet environment. The lens has a first light-directing area for directing light in a first beam pattern. The lens also has a second light-directing area, distinct from the first light-directing area, for directing light in a second beam pattern, distinct from the first beam pattern. The lens is positioned relative to fixture and light source therein to select from the distinct beam patterns based on the alignment of the light-directing areas relative to the light source resulting from a positioning of the lens.

Abstract: A luminaire adapted to being mounted at the top of a post having a design reducing maintenance costs. The luminaire has a capital with a globe mounted thereon forming an optical chamber, the capital has a front access area with a front access door hingedly attached thereto and optionally has a tool-less latch capable of holding the front access door over the front access area. The capital has an opening in a top portion thereof into the optical chamber, optionally, a relamping module extends from the inside of the capital, through the opening and up into a central portion of the optical chamber and has a lamp socket thereon. The relamping module may be removed without manipulation of the globe or globe roof. The luminaire may also have electrical gear within the capital attached to a tray wherein the tray is removably attached to an internal portion of the capital. The globe and globe roof may remain stationary during typical maintenance processes such as relamping or maintenance of electrical gear.

Abstract: A frame includes a main frame and a receiving frame. The main frame includes a base and several circumferential sidewalls extending from the base. At least two opposite stepped elements are defined at the top of two opposite sidewalls. Each stepped element includes a tread portion extending from the sidewall toward an inner of the main frame, a riser portion extending from the end of the tread portion toward the opening. The receiving frame includes a frame body, a rim portion extending from a bottom of the frame body toward an inner of the frame body, and at least two grooves defined in the rim portion corresponding to the two stepped elements. Each groove of the receiving frame may be inserted into the corresponding stepped element. A backlight system using the frame is also provided, which has a narrow-framed, space-saving design, and also can be assembled easily.

Abstract: A chemiluminescent lightstick evacuation station consisting of a wall mountable fixture that stores a plurality of lightsticks that are accessed by opening the fixture cover. The fixture cover is opened by pivoting from a closed position to an open position wherein a lightstick restraint causes the activation of all stored lightsticks so as to facilitate their removal and use during an emergency. One lightstick may be retained in the device by use of restricted movement housing, and all lightsticks may be made to rotate outwardly for ease of access.

Abstract: A handheld computing device and handheld music player are disclosed. The handheld computing device includes a seamless enclosure formed from an extruded tube. The extruded tube includes open ends and internal rails which serve as a guide for slidably assembling an operational assembly through the open ends of the extruded tube, a reference surface for positioning the operational assembly relative to an access opening in the seamless enclosure, and a support structure for supporting the operational assembly during use. The handheld music player includes an elongated extruded tube extending along a longitudinal axis. The elongated extruded tube has a first open end and a second open end opposite the first open end, and defines an internal lumen which is sized and dimensioned for slidable receipt of operational components of the handheld music player. The lumen includes rails for guiding the operational components to their desired position within the lumen.

Abstract: A lighting assembly is provided having a main housing and retaining member such as a door hinged to the main housing. The housing has an open end with a channel for receiving and supporting a lens, diffuser and/or grate which slides into the housing to close the bottom side of the housing and enclose the lamps and electrical components. The retaining member is hinged to close the open end of the housing and prevent removal of the lens, diffuser and grate. The retaining member is coupled to the housing by pivot pins that are received in elongated slots in the side of the housing. The retaining member is pulled away from the housing where the pivot pins slide to an outward end of the slot. The retaining member can then pivot in an upward or downward direction without interfering with the housing to allow removal of the lens, diffuser and grate so the lamps can be replaced and the electrical components can be serviced.

Abstract: A halogen light fixture for mounting under a cabinet and over a counter surface, as in a kitchen, has a housing between opposite end caps adaptable to fixtures of varying lengths. A partition between the end caps cooperates with a housing top and rear wall to provide a closed wiring compartment including a power switch accessible on a bottom of the partition. A translucent diffuser panel is supported in open slots formed in the end caps and can be pulled from the slots for access to the lamps sockets. The fixture is held together by screws passing through the housing and the end caps.

Abstract: An electronic device illuminator comprises a light assembly pivotally coupled to a housing of an electronic device.

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 recessed light fixture having a rotation ring allowing rotation of a lamp mounted over the fixture frame aperture, the rotation ring easily rotatable on the frame and held in place by a ring clamp. The recessed light fixture rotation ring has a mechanical brake for locking the ring in place after positioning of the lamp. The ring also has a slip disc positioned between the surface of the frame and the ring to allow easy rotation. The housing of the fixture has junction boxes mounted on side walls which are hinged to the sidewalls of the housing and which swivel into the interior of the housing for ready access after installation through the aperture of the frame. The lamp of the fixture movable about a horizontal adjustment and vertical adjustment axis while also maintaining position with respect to the reflector.

Abstract: A lighting unit includes a housing, a lamp fixture configured to be coupled to the housing, an element extending from the lamp fixture and configured to be received in the housing, and a sealing member defining an aperture for receiving the element therethrough. A periphery of the aperture forms a fluid-tight seal around the element. In another aspect, a lighting unit includes a housing and an enclosure coupled to the housing and configured to define an interior space, wherein the interior space is sealed from an interior of the housing. In another aspect, a method for sealing a lighting unit includes providing a housing, an enclosure coupled to the housing, and an opening in the housing in communication with the enclosure, placing a seal between the housing and the enclosure, and applying a sealing member to the opening to seal the opening.

Abstract: Disclosed herein is a tunnel light fixture that comprises an improved hinge-coupling mechanism to couple a body and a cover of the light fixture, and has an efficient packing structure capable of increasing the shielding efficiency between a lamp and a ballast to provide improved endurance and safety, and the tunnel light fixture comprises the body and the cover, and the body comprises a hinge-receiving part integral to the body and including a pair of shaft- receiving guides having a shaft groove, and a strut between the pair of shaft-receiving guides, and the cover comprises a hinge-inserting part integral to the cover corresponding to the hinge-receiving part and including a rotational bar having a strut recess formed at an intermediate portion of the rotational bar and a shaft extending from both sides of the rotational bar.

Abstract: A lamp assembly comprises a lamp cover formed with a plurality of through holes on a peripheral surface thereof. The lamp cover accommodates a positioning element made of a tough material for framing a light-penetrable element therein. The lamp cover fitted with the light-penetrable element allows a plurality of resilient catch elements formed on a periphery of a reflective housing to engage with the through holes formed on the lamp cover at corresponding locations, so that the lamp assembly can be assembled, and have its components rapidly positioned in place, by engaging the components to one another, rather than by screwing with threaded fasteners, thereby simplifying fabrication of the lamp assembly.

Abstract: The present invention discloses an LED streetlight structure, which comprises: a heat-conduction pipe frame, an upper casing, a lower casing, a light concentration plate, and a transparent cover. The upper and lower casings are made of a plastic material and pivotally coupled to each other. The heat-conduction pipe frame has a heat-dissipation seat with main heat-dissipation fins. Two stabilizer boxes with fins are respectively arranged at two sides of the heat-dissipation seat. Heat-dissipation lamp sets insert through the bottom of the heat-dissipation seat. The present invention installs the main heat-dissipation fins on heat-conduction pipe frame and installs the fins on the stabilizer boxes to increase heat-dissipation area. Further, an auxiliary heat-dissipation ventilation device is arranged above the heat-conduction pipe frame and made of aluminum, and aluminum itself benefits heat dissipation.

Abstract: A trim ring for a vandal resistant luminaire, the trim ring is disposed about an electrical component housing and a lens and holds the lens to the electrical component housing. The trim ring is designed to protect the luminaire by absorbing physical shock exerted on the luminaire and provide an aesthetic pleasing design. Twist locks depend from an inner annular surface of the trim ring which cooperate with retaining legs on the electrical component housing providing for access to the internal components of the vandal resistant luminaire.

Abstract: A multi-purpose holiday display light box that is equipped with an interchangeable holiday indicia for use as a lawn ornament or decoration.

Abstract: An integral HID reflector lamp may be formed with an HID held in a reflector. An inner element is mechanically coupled to the reflector. The inner element is formed with a first mechanical coupling to mate with the reflector, a second mechanical coupling to mate with a circuit board, and an electrical coupling to at least electrically couple one of the leads to the circuit board. A circuit board has an edge mechanically coupled to the inner element and electrically connected to the leads by an electrical coupling on the inner element. A heat sink spans at least one side of the circuit board and forming an EMI shielding. An outer cover encloses the heat sink, circuit board, and inner element and coupled to the assembly of the reflector, HID lamp, inner element, and heat sink with each elements of the assembly clipped together.

Abstract: An integral HID reflector lamp may be formed with an HID held in a reflector. An inner element is mechanically coupled to the reflector. The inner element is formed with a first mechanical coupling to mate with the reflector, a second mechanical coupling to mate with a circuit board, and an electrical coupling to at least electrically couple one of the leads to the circuit board. A circuit board has an edge mechanically coupled to the inner element and electrically connected to the leads by an electrical coupling on the inner element. A heat sink spans at least one side of the circuit board and forming an EMI shielding. An outer cover encloses the heat sink, circuit board, and inner element and coupled to the assembly of the reflector, HID lamp, inner element, and heat sink with each elements of the assembly clipped together.

Abstract: A bracket locator for use with a fixture. The bracket locator including a main body, a swinging arm and a plurality of alignment protrusions. The swinging arm is rotatably connected to the main body. The plurality of alignment protrusions include a first protrusion and a second protrusion. The first protrusion extends from the main body. The second protrusion extends from the swinging arm.

Abstract: The invention relates to a lighting unit, in particular a lighting fixture for ceilings and/or walls comprising a coupled housing frame (2) and a functional frame (3) which is pivotally mounted with respect to the housing frame. A closing device is provided between the housing and functional frames and consists of a specially shaped wire spring (4) which interacts with the rest reception area (10) of the functional frame (3) and comprises a spring leg (8) interacting with the functional frame (3) in a predefined pivoting area under a preload effect.

Abstract: An sealed acorn style luminaire is described. The luminaire has generally separate inflow and outflow valves for pressure equalization in order to minimize the amount of dust and other foreign matter which could enter into the sealed optical compartment thereby reducing the optical characteristics of the fixture. A one way outflow valve and seal is provided in combination with controlled inflow seals to reduce or limit the dirt and other foreign substances in the sealed optical compartment.

Abstract: A light housing which, together with other same-type housings, is intended to form a lighting wall, such as a ceiling. The housing includes a frame having at least one transparent or translucent panel (9) fixed to the base thereof and can receive lighting elements (3) which are disposed above the frame. The light housing is characterized in that it includes stiffening members (10, 10?) which provide a link between certain sides (1a) of the frame, the stiffening members (10) being disposed close to the above-mentioned lighting elements (3).

Abstract: An outer case of a LED module includes a top case and a bottom case to receive the LED module therebetween. The top case has a plurality of through holes and a plurality of blocks spacedly protruding from an inner side of the top case. The bottom case has a plurality of corresponding clip holes spacedly formed thereat, wherein the blocks are detachably engaged with the clip holes respectively to detachably couple the top case with the bottom case so as to form a cavity therebetween for receiving the LED module at a position that portions of LEDs are protruded through the through holes respectively. Two wire holes are formed at two sides of the top case when the top case is coupled with the bottom case for guiding wires of the LED module extending out of the cavity through the wire holes respectively.

Abstract: A halogen light fixture for mounting under a cabinet and over a counter surface, as in a kitchen, has a housing of continuous cross section between opposite end caps adaptable to fixtures of varying lengths. Screw fasteners pass through aligned openings in the housing and the end caps for attachment to the cabinet underside, and spacers integral to the end caps provide for air flow between the fixture and the cabinet. A partition also extending between the end caps provides a closed wiring compartment and some or all of the electrical components of the fixture, including lamp sockets and power switch can be mounted on the partition for ease of assembly and access.

Abstract: A light diffusor (12) is disclosed which includes a translucent or transparent light diffusing portion (24) and a rigid mounting neck (25) coupled to the diffusing portion (24). The diffusing portion (24) has an inwardly extending flange (27) with a series of mounting hole (28) therein. The mounting neck (25) has a generally cylindrical, upright section (30) and an inwardly extending mounting flange (31). The neck inwardly extending mounting flange (31) has a series of mounting holes (33). The light diffusor also has first annular gasket (35) mounted between the mounting neck flange (31) and the diffusing portion flange (27), a second gasket (37) mounted below the diffusing portion flange, and three mounting brackets (40) mounted below the second gasket (37). The first gasket, second gasket and mounting brackets all have mounting holes (36), (37) and (41), respectively.

Abstract: A light source unit mounting structure includes a light source unit, including a reflector for reflecting light of a light source on a concave reflecting surface to give a directivity; and a lamp holder, on which the light source unit is mounted by securing an opening edge part of a light emission opening of the reflector to the lamp holder. An annular flange portion around the light emission opening of the reflector mounted on a bearing surface provided at the lamp holder is elastically pressed by two pressers fastened by screws to the lamp holder, so that the flange portion is elastically pressed and retained in a thickness direction between the pressers and the bearing surface.

Abstract: An in-grade light fixture has a lamp compartment having an open upper end with a lens cover covering the open upper end. The lens cover may have a joint connection to permit travel from an open configuration to a closed configuration. A junction box is adjacent to the lens cover along an upper portion of the compartment. If a ballast is utilized for proper supply of power to the lamp, a ballast compartment is adjacent an open lower end of the lamp compartment. A hydraulic isolation chamber extends vertically downward from the junction box to the sealed ballast compartment. The hydraulic isolation chamber is filled with a potting material and prevents wicking of moisture into the ballast compartment.