Abstract: An LED light fixture includes a post having a fixing bar at a top end thereof, a first lamp mounted on the fixing bar, and a second lamp rotatably mounted on the fixing bar. The first and second lamps are capable of rotating with respect to the fixing bar to change an angle between the first and second lamps, to thereby change an illumination area and intensity distribution of the LED light fixture. In one position, the second lamp overlaps the first lamp, and LED light sources in the first lamp are alternate with those of the second lamp.

Abstract: A task light assembly comprises a light head comprising a shade with an illuminator mounted therein, a support configured to suspend the light head above a work area and an adaptor mounted to the support and adjustably receiving at least a portion of the light head for lateral movement of the light head lateral position with respect to the support. The light head can be configured to project an asymmetrical light pattern onto a desired location on a work area and the asymmetrical light pattern can have a maximum intensity located laterally beyond the light head lateral position.

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: Disclosed is an adjustable light fixture. The light fixture can include a housing assembly comprising an outer housing surrounding a central opening; a first adjustment mechanism configured to tilt the light source comprising a first rotating member; and a second adjustment mechanism configured to rotate the light source comprising a second rotating member, where the first and second rotating members are substantially parallel to one another. The light fixture can also include a biasing member that will return the housing assembly to a first tilted position from a second titled position.

Abstract: A mounting device for an LED lamp has a support tube and at least one fixed unit. The support tube has an outer surface and an external engaging surface. The external engaging surface is formed on the outer surface of the support tube. Each one of the at least one fixed unit has a positioning block mounted movably and pivotally around the support tube and has a front surface and an internal engaging surface. The internal engaging surface is formed on the front surface of the positioning block and engages the external engaging surface of the support tube. Therefore, it is convenient to adjust the fixed unit to a suitable position so that the LED lamp can be installed at any location.

Abstract: A LED lighting fixture with a rotating terminal block is revealed. The LED lighting fixture includes a housing with a connection hole on one end. Positioning teeth are arranged at an inner edge of the connection hole and a rotating shaft sleeve with a stop flange against the connection hole is mounted in the connection hole. Moreover, positioning teeth corresponding to the positioning teeth of the connection hole are disposed on an inner side of the stop flange. A threaded segment threaded with a terminal block for connection and positioning is set on an outer edge of the rotating shaft sleeve. Thus the housing can be rotated directly and the positioning teeth of the housing and the positioning teeth of the rotating shaft sleeve are engaged and locked with each other so as to make the housing rotate around the terminal block. Therefore, the lighting angle is adjusted optimally.

Abstract: In a lamp, in particular a desk lamp, with a base plate (2) and a lamp head (3), the lamp head (3) is held on the base plate (2) via two profile elements (4, 5) running next to one another, wherein the profile elements (4, 5) represent current-conducting elements.

Abstract: A mirror for facilitating appearance related functions includes a circular ring-shaped frame holding therein back-to-back reflective mirror plates having different magnification factors, e.g. 1× and 5×, each plate having a circular central imaging reflective area and an outer concentric light transmissive window area. Continuously rotatable pivot joints support the frame between opposed arms of a yoke protruding upwardly from a stanchion and base for placement on a table, or an arm and wall bracket for mounting on a wall, enabling the frame to be rotated to interchangeably orient 1× and 5× mirror plates in a forward facing use position. A ring-shaped, printed circuit board with circumferentially spaced apart light emitting diodes (LED's) protruding radially outwards of an outer circumferential edge of the board is located between inner facing surfaces of the mirror plates.

Abstract: A lamp including a double-shaft hinge, which includes at least one first rotating shaft, a second rotating shaft, an installation connector and a supporting connector connected with the installation connector, a pair of first shaft brackets and a second shaft bracket. The first shaft bracket is non-rotatably fixed with the first rotating shaft, and the second shaft bracket is non-rotatably fixed with the second rotating shaft. The installation connector defines a pair of symmetrical sleeves, the supporting connector defines a shaft hole, and the central axis of the shaft hole and the central axis of the sleeves are perpendicular to each other. The first rotating shaft are rotatably positioned in the sleeves, the second rotating shaft is rotatably positioned in the shaft hole.

Abstract: An ear hook device with illumination function is worn on a user's ear to provide illumination, so that the user can have their hands free to do more works. Furthermore, the ear hook device is further provided with a holding assembly which can hold the ear hook device and is then clipped to the user's pocket when the ear hook device is not in use, making it easier for the user to use and carry the ear hook device.

Abstract: A headlamp in which light source units are tilted about predetermined tilting center axes by means of an aiming mechanism interposed between a lamp body and the light source units. The aiming mechanism includes a tilting fulcrum (a ball and socket joint), aiming screws which are rotatably supported on the lamp body, and nut members which thread fit on the screws and mounted on the light source units movably in forward and backward in response to the rotations of the screws, so as to tilt the light source units about the tilting center axes. A leaf spring slide portion brought into elastic engagement with a guide groove is made of a polyacetal resin which is superior in resistance to wear. A nut member main body having a screw thread fitting portion is made of a nylon resin which is superior in resistance to heat. There is no permanent set on the slide portion and a slide contact surface does not wear, and no looseness is generated in the screw thread fitting portion of the nut member main body.

Abstract: An adjustable structure for lamp stand, in which a swivel mount is fitted to the upper portion of a base, thereby enabling ends of a first bar support and a telescopic link to be pin connected to the swivel mount, while the other ends are pin connected to a second bar support. A lamp swivel component is disposed on the end of the second bar support. Accordingly, relative positions between the first bar support, the second bar support and the telescopic link can be freely adjusted, while still providing stable support to the structure.

Abstract: Embodiments include a method and apparatus for an integrated illumination device mount and for mounting the integrated illumination device and mount to a firearm or helmet. In some embodiments, the integrated illumination device mount is a low profile mount. In some embodiments, the integrated illumination device mount allows rigid mounting of an illumination device to a rail of a firearm. In other embodiments, the integrated illumination device allows pivotal mounting of the illumination device to a rail of a firearm. In yet other embodiments, the integrated illumination device mount allows pivotal mounting of the illumination device to a rail of a helmet.

Abstract: A connector for connecting a lamp to a pole, includes a frame and a bracket pivotably attached to the frame. The frame has multiple positioning holes defined therein, and the bracket has two slots defined corresponding to the positioning holes. A blot extends through the frame and the bracket, and a screw is selected to extend through one of the positioning holes and a corresponding slot to fix the bracket to the frame with a required angle.

Abstract: A spot light includes a universal body, a light arrangement, and a spot light accessory. A spot light accessory having a plurality of accessory elements selectively and detachably coupling with the universal body to transform the universal body from one configuration to another configuration such that the type of spot light, the hand carry method, and even the supporting method of the floor stand are flexible depends on the customers needs.

Abstract: A positioning structure for a table lamp includes a base provided with a connecting stand and a support post with a pivotal seat. The pivotal seat has one side formed with an accommodating chamber and another side bored with an insert hole communicating with the accommodating chamber. An extension rod pivotally assembled with the pivotal seat is secured with fixing member having a support shaft at one side, the support shaft having an outer wall formed with a male thread section and an interior bored with a through hole having an outer end provided with a female thread section. A positioning member made of silica gel is fitted on the support shaft. A nut having a threaded hole and an insert hole is screwed on the support shaft, and a screw. is inserted through the nut and screwed in the female thread section of the extension rod.

Abstract: A handheld lighting device includes a basic body and a light-emitting apparatus which is mounted such that it can pivot relative to the basic body. The handheld lighting device has a resting element which is mounted such that it can pivot relative to the basic body.

Abstract: A high bay light including a mounting plate which may be secured to either a vertically disposed support or a horizontally disposed support. One to four LED light modules are secured to the mounting plate and are mounted thereon in such a way to achieve various lighting patterns.

Abstract: A moving light test system allows connecting moving lights to an interface board and conveying the lights and orienting and testing the lights while they are attached to the board. The lights can be mechanically and electrically connected to the board, and once connected, can be tested in multiple ways without reconfiguring or removing the lights. The board has a connector that can be plugged in at various locations, and the board can also be handled by mechanical devices. In this way, once the light is connected to the board, it does not need to be re-handled. In addition, lights can be tested in different orientations.

Abstract: A graphical-user-interface manipulable lighting system is disclosed in which a light source having a position of focus is moved by an articulator adapted to receive and send signals through a control box indicating the current and intended positions of the focus of the light source, and further a computer interface operating wirelessly which graphically displays the current position of the light source and is adapted to allow a user to drag an icon indicating the current position of the light source onto a new intended position thereby resulting in the movement of the light source to the new position.

Abstract: An illuminating device may be used, for example, as a portable illuminator, book light and travel light. The illuminating device may include a head, a pair of rails and a base. The illuminating device may be manipulated into numerous positions including extended and retracted positions such that the light source may be positioned in a variety of positions relative to the base which may include a clip for securing structure the illuminating device to a variety of structures including books, magazines, tables, e-readers and bags, to name a few.

Abstract: A movable multi-directional light stand is revealed. The movable multi-directional light stand includes a retractable top support rod that can be received into and connected with a hollow middle support rod. The top support rod is disposed with a mounting slot on a wall, along an axial direction thereof. A sleeve with external threads is disposed around the top of the top support rod and is arranged with a guiding slot corresponding to the mounting slot of the top support rod. A retractable light rod is pivoted to the wall of the top support rod that is disposed with the mounting slot. The retractable light rod is formed by a hollow outer tube and an inner tube that slides in the outer tube and having a hook. The light stand further includes an adjustment nut with threads engaging corresponding external threads of the sleeve so that the adjustment nut can support the outer tube, locate the retractable light rod in the mounting slot and adjust the height of the light.

Abstract: Disclosed herein are viewing kits that can be assembled and coupled to visual content sources, such as e-readers, to facilitate viewing visual content. Example viewing kits include a viewing aid, which may include a light, lens, filter, or other implement, and an interchangeable fastener that can be removably coupled to the viewing aid using a slot-and-key interface or other suitable coupling mechanism. Either the fastener alone, or the fastener coupled together with the viewing aid, provides a deformable cavity that is shaped to clamp onto an edge of the e-reader. Inserting the e-reader into the cavity causes the fastener, which is made of resilient material, to bend outwards. In response, the fastener exerts a pinching force on the e-reader, creating a pressure fit that connects the viewing aid securely to the e-reader.

Abstract: A structure of overhead lamp and mounting bracket for constructional vehicle has developed to tilt the illuminating angle by controlling the position of slits at the lateral sides of bracket. The lamp is securely fixing at the controlled position at one of 4 positions and the position controlling slits. The main case is securely fixed to the bracket by installing a connection screw and a hinge bolt for restricting unwanted rotation of the hinge bolt. Accordingly, since a position controlling rib having a position controlling slit is extended rearward from side supporters, the illumination angle can be controlled within a greater range. The main case can be supported at 4 points through the plurality of position controlling slits. Furthermore, by fitting the connection screw with an outer circumferential recess of a hinge bolt fastening lever, rotational separation of the hinge bolt and change of the illumination angle of the main case can be prevented.

Abstract: A ladder mountable work light for illuminating a work area above a ladder, the ladder having a top plate with a top plate opening of predetermined size and shape, and having a base body having a cross section adapted to fit into said top plate opening, spring arms adapted to fit within said top plate opening and hold said base body therein, a socket mounted in said base body for an electric lamp, a power connection mounted in said base body for connecting said socket to a source of electrical power, at least one power outlet mounted in said base body for connection of a power cord, and, a pivot mounting connecting said lamp socket to said base body.

Abstract: A lamp mounting apparatus includes a base, an adjusting portion, and an assembling portion. The adjusting portion includes a first end pivotably connected to the base, and a second end. The assembling portion is pivotably connected to the second end. The assembling portion is configured to have a lamp mounted thereon, and the assembling portion is capable of moving relative to the base by adjusting the adjusting portion.

Abstract: A lamp includes a lamp pole, a lamp head and an adjustable component. The adjustable component comprises an engaging portion and an adjustable portion pivotably connecting with the engaging portion via a pivot shaft. The adjustable portion mounted on the lamp head defines a plurality of adjustable holes therein. The engaging portion receiving a front end of the lamp pole therein and secured to the lamp pole, defines a plurality of engaging holes located corresponding to the adjustable holes. The adjustable portion is rotatable about the pivot shaft relative to the engaging portion. Two screws extend through the adjustable portion and screw into the engaging portion to connect the adjustable portion and the engaging portion together. When the adjustable portion is rotated from a first position to a second position, an elevation angle of the adjustable portion and accordingly the lamp head relative to the lamp pole is varied.

Abstract: A LED display unit comprises a housing; an openable door coupled to a front of the housing for movement between a closed position and an opened position; a LED module mounted on a front of the openable door; and a sliding assembly coupled to an inside surface of the housing and an inside surface of the front door comprising: a first connection member fixedly mounted to an inside surface of the housing, a second connection member fixedly mounted to an inside surface of the front door, a sliding member slidely mounted to the first connection member and rotatably connected with the second connection member, so that the sliding member can move forward from the housing and rotate relative to the openable door so as to open the openable door.

Abstract: A lighting structure adapted to be disposed at an electronic apparatus is provided. The lighting structure includes a lighting module, a first elastic element, a latch, and a second elastic element. The lighting module has a light source and a stopper element. The first elastic element is connected to the lighting module. The latch has an interfering portion for blocking the stopper element and is capable of sliding in the electronic apparatus. The second elastic element is connected to the latch. When the latch is subjected to an external force and slides to deform the second elastic element, the stopper element disengages from the interfering portion, and the first elastic element rotates the lighting module, such that the lighting module is at a different position, and the light source is used to illuminate part of the electronic apparatus.

Abstract: A worklight with head mounted on a stand that uses a hands-free mounting system that enables the lamp head to be tilted in different fixed angles without manually loosening and tightening knobs and nuts. The mounting system includes at least one nut body mounted or attached on the surface of the lamp head. The nut body includes a central post with a threaded bore surrounded by a plurality of radially aligned beveled ribs. The ribs are aligned parallel to the nut's longitudinally axis and are equally spaced apart thereby forming a plurality of slots surrounding the post. The post is slightly shorter than the surrounding ribs. The slots on one side of the nut body are aligned with slots located on the opposite side of the nut body. The stand includes at least one support arm with a straight portion. The outside surface of the straight portion has a diameter sufficient so that the inside surface of the straight portion rests in the two slots located on opposite sides of the nut body.

Abstract: An adjustable luminaire includes a base, a tubular arm movably connected to the base, and a light assembly connected to the tubular arm and simultaneously moved with the movement of the tubular arm. The light assembly has at least two light shades pivoted relative to each other and a plurality of light sources disposed on the at least two light shades. The adjustable luminaire further includes a driving assembly mounted in the tubular arm and the base. The driving assembly movably connected to the light assembly. The driving assembly is simultaneously moved with the movement of the tubular arm to drive the light assembly for adjusting a pivoting angle between the at least two light shades so as to vary an illuminated area which is illuminated by the light sources.

Abstract: The decorative light mount apparatus provides for permanent support of lights and light strings to a structure. The right angle member provides for light wiring to be wire tired or fastened otherwise, to the gapped risers of the tie plates, so that lights are extended from the horizontal length of the right angle member. The right angle member is supported on a structure via the hinge that is fastened to the right angle member. The hinge allows the right angle member to be pivoted, positioning the vertical length of the right angle member either vertically upward, vertically downward, or even angled from the downward vertical. The lock member provides fastening of the right angle member so that the lights are visibly concealed. Release of the wing nut allows the right angle member to pivot upwardly to position lights in a downward and visible mode.

Abstract: A light and support structure apparatus, wherein the light may have beam width adjustment such that the beam may be easily adjusted from a wide beam to more of a spot beam. The light may also be able to switch to a different color beam. The light may utilize standard cylindrical batteries which are inserted into a battery compartment side by side with their positive and negative ends in the same orientation. The light may be mounted upon a tripod or a monopod, and in some embodiments a tripod with flexible legs utilizing ball and socket joint connectors which, when interconnected, form a flexible assembly. Each connector may include a body with a first and second end portion. An external socket engaging surface is provided at one end of the body. The other end of the body has an internal cavity. The socket engaging surface of one connector is snapped into the internal cavity of another to interconnect the connectors.

Abstract: A rotatable downlight frame assembly comprises a pan having a pivot aperture therein, a collar disposed in the pan for rotating in the pivot aperture, the collar having a trim aperture wall depending through the pan, the collar having one of a square, rectangular, non-circular, or asymmetrical trim opening for positioning of a lighting trim, the collar being rotatable relative to the pan through 360 degrees, at least one fastener passing through the collar, a tool-less fastener assembly, the tool-less assembly having one of a first position and a second position for tightening the collar at an angular position relative to the pan via frictional engagement, and the other of the first position and the second position allowing for pivotable motion, and, a lighting assembly positioned on the collar for pivotal movement with the collar.

Abstract: A lamp device includes a supporting housing connected fixedly to a base disposed on a supporting surface, and having an inclined top surface inclined with respect to the supporting surface. A lamp-mounting housing is connected pivotally to the supporting housing, has an inclined connecting surface parallel to and facing the inclined top surface of the supporting housing, and is rotatable relative to the supporting housing about a pivot axis perpendicular to the inclined top surface of the supporting housing between a first position, where the supporting housing cooperates with the lamp-mounting housing to constitute an upright structure, and a second position, where the supporting housing cooperates with the lamp-mounting housing to constitute a bent structure. A lamp unit is mounted to the lamp-mounting housing such that the lamp unit emits light toward the supporting surface when the lamp-mounting housing is at the second position.

Abstract: An exemplary lamp includes a first member, a second member, and buckle assemblies securing the first member on the second member. Each buckle assembly includes a connecting member having an end thereof pivotally connected to the second member, a buckle having an end thereof pivotally connected to an opposite end of the connecting member and having an opposite end thereof clasping the first member to the second member, and a knob. Each buckle assembly has a dead point. When the buckle is flapped towards the connecting member and a pivoted end between the buckle and the connecting member passes through the dead point to get close to the second member, the knob extends through the buckle. Then the knob is rotated along a predetermined direction to press on the buckle, thereby preventing the pivoted end from moving away from the second member.

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 multi-source shadowless operating lamp is disclosed, which includes a central base, a link element received in the central base, and a plurality of spotlights mounted on a peripheral of the central base and spaced a distance apart from each other. A light field is defined below the central base and extends perpendicular to the central base. Each spotlight defines a light focus spot through the light field. The focus spots exactly pass the same height in the light field. Each spotlight includes a lamp shell connecting with the central base, a dissipation substrate accommodated in the lamp shell, and a plurality of LED sets. The LED sets at different positions respectively cast light to the focus spot of the spotlight. An angle between the dissipation substrate and the light shell is adjustable to change position of the focus spot of the spotlight relative to the light field.

Abstract: A luminaire that has multiple removable handles thereon, and can operate in multiple different modes, including a mode where a manual follow spot can occur. To operate in the manual follow spot mode, the luminaire is placed into a free moving mode in which it can be moved, and then the luminaire is moved using the removable handles to manually place the luminaire in a desired location. Then, the luminaire is commanded to remain in that desired location by turning on breaks or the like. In the manual movement mode, movement of the luminaire is manually controlled and not remotely controlled and all of at least color, gobo, beam size and other parameters are remotely controlled.

Abstract: A lighting device is disclosed. The lighting device can be battery-powered and can include one or more LEDs within a light assembly. The device also can include a battery compartment, a first frame element, and a second frame element. The light assembly can be supported by the first frame element and free to tilt on a first axis relative to the first frame element. The light assembly can be free to rotate relative to the second frame element on a second axis substantially perpendicular to the first axis. The second frame element can be, for example, a plate configured to be fixedly mounted to a surface, such as a wall.

Abstract: A track lighting fixture comprising a power connector, an adjustable holder shell assembly connected to the power connector to hold a lamp. The adjustable holder shell includes an outer shade, a hollow rotating member, a rotary cap capped on the rotating member and coupled to the rear side of the outer shade for rotating the rotating member, and a sliding member mounted in the hollow rotating member and holding the lamp on the inside and a first guide rod extending inserted into an axial guide groove in the outer shade and a second guide rod inserted through a front notch of the hollow rotating member and movable along a spiral groove around the periphery of the hollow rotating member for causing axial movement of the sliding member and the lamp relative to the outer shade upon rotation of the rotating member by the rotary cap.

Abstract: A lamp includes a head, a support arm and a base. The head includes a light emitting member. The support arm is rotatably connecting to the head. The support arm includes a first pushing member and a second pushing member. The base includes a moveable contact and a stationary contact. The moveable includes a spring tab. When the support arm is rotated to a first position, the first pushing member abuts against the spring tab to be deformed, and the spring tab connects to the stationary contact. The light emitting member is in a power on state. When the support arm is rotated to a second position, the second pushing member abuts against the spring tab to be deformed, and the spring tab disengages from the stationary contact. The light emitting member is in a power off state.

Abstract: A lamp including a double-shaft hinge, which includes at least one first rotating shaft, a second rotating shaft, an installation connector and a supporting connector connected with the installation connector, a pair of first shaft brackets and a second shaft bracket. The first shaft bracket is non-rotatably fixed with the first rotating shaft, and the second shaft bracket is non-rotatably fixed with the second rotating shaft. The installation connector defines a pair of symmetrical sleeves, the supporting connector defines a shaft hole, and the central axis of the shaft hole and the central axis of the sleeves are perpendicular to each other. The first rotating shaft are rotatably positioned in the sleeves, the second rotating shaft is rotatably positioned in the shaft hole.

Abstract: An LED having a center core and a first panel and a second panel coupled to the center core. The first panel includes a first array of LEDs mounted to a first circuit board disposed within a first opening formed within the first panel and a first lens disposed over the first array of LEDs. The second panel includes features similar to the first panel. The second panel is rotatable around the center core from a 0 degree closed orientation to about a 360 degree orientation, and is positionable at any intermediate angle therebetween. The LED includes a retractable hook for mounting to an elevated object. The LED also includes at least one magnet to mount the LED to vertical/vertically angling surfaces. The array of LEDs mounted to the first panel and the second panel can be controlled independently of one another.

Abstract: A brake assembly for an adjustable downlight fixture comprises a fixture having a rotational collar assembly, the rotational collar assembly having a first race rotating relative to a second race, a brake assembly connected to one of the first race and the second race, the brake assembly frictionally engaging the other of the first race and the second race.

Abstract: A connector for connecting a lamp to a pole, includes a frame and a bracket pivotably attached to the frame. The frame has multiple positioning holes defined therein, and the bracket has two slots defined corresponding to the positioning holes. A blot extends through the frame and the bracket, and a screw is selected to extend through one of the positioning holes and a corresponding slot to fix the bracket to the frame with a required angle.

Abstract: A multi-source shadowless operating lamp is disclosed, which includes a central base, a link element received in the central base, and a plurality of spotlights mounted on a peripheral of the central base and spaced a distance apart from each other. A light field is defined below the central base and extends perpendicular to the central base. Each spotlight defines a light focus spot through the light field. The focus spots exactly pass the same height in the light field. Each spotlight includes a lamp shell connecting with the central base, a dissipation substrate accommodated in the lamp shell, and a plurality of LED sets. The LED sets at different positions respectively cast light to the focus spot of the spotlight. An angle between the dissipation substrate and the light shell is adjustable to change position of the focus spot of the spotlight relative to the light field.

Abstract: A foldable, rechargeable light emitting diode (LED) pocket light is disclosed. The light includes a first compartment, a second compartment and a hinge element. The first compartment has a housing, a plurality of LED lights, a rotatable hinge, and a hook for hanging the light. The second compartment includes a housing, a member for receiving the rotatable hinge and a power source. The light also includes an activating member and circuitry for activating the LED lights.

Abstract: A light emitting diode-based bulb and method of use are described. The LED bulb comprises a bracket and a housing. The bracket comprises a connector. The housing is rotatably coupled with the bracket and comprises a light emitting diode connected to the connector; and a fan connected to the connector.

Abstract: In a first embodiment the invention is for use with a light-fixture assembly for elongate light tubes of the type that includes (a) an elongate support frame and (b) a cross-structure at each of the opposite ends thereof and has at least one lamp holder thereon. The improvement of the embodiment wherein the cross-structures each include at least one folding arm movable between a stowed position substantially parallel with the support frame and a deployed position substantially perpendicular to the support frame.