Abstract: An ultraviolet emitting device according to the present disclosure includes a lamp for mounting a discharge gas and an ultraviolet emission source therein, and a plurality of yarns formed by extending and aggregating carbon nanotubes in a first direction, and includes a first electrode at least partially exposed to the discharge gas within the lamp. Accordingly, electron emission efficiency of the first electrode is improved to achieve high efficiency, and durability is also improved to provide a long-life device.

Abstract: An ultraviolet emitting device according to the present disclosure includes a lamp for mounting a discharge gas and an ultraviolet emission source therein, and a plurality of yarns formed by extending and aggregating carbon nanotubes in a first direction, and includes a first electrode at least partially exposed to the discharge gas within the lamp. Accordingly, electron emission efficiency of the first electrode is improved to achieve high efficiency, and durability is also improved to provide a long-life device.

Abstract: The present invention provides an emitter, which comprises carbon nanotubes and is excellent in the efficiency of electron emission, and an X-ray tube comprising the same.

Abstract: The present application provides a LED lamp, wherein the LED lamp comprises: a lighting assembly comprises a lamp post, rigid wires are provided at the bottom of the lamp post; a driving unit comprises a PCB, a connector is provided on the PCB and is electrically connected with the PCB; and a base component is provided at the bottom of the lighting assembly, accommodates the driving unit, and electrically connected with the driving unit by connection wires extended from the driving unit, wherein, the LED lamp further comprises a bracket positioned in the base component, wire guiding holes are provided on the bracket, so that the rigid wires pass through the wire guiding holes to electrically connected with the connector. By such arrangement, automatic and high-speed assembly of the LED lamp may be achieved.

Abstract: An LED light bulb includes a bulb shell, a bulb base, two conductive supports, a stem, and an LED filament. The bulb base is connected with the bulb shell. The two conductive supports are disposed in the bulb shell. The stem extends from the bulb base to inside of the bulb shell. The LED filament includes a plurality of LED chips and two conductive electrodes. The LED chips are arranged in an array along an elongated direction of the LED filament. The two conductive electrodes are respectively disposed at two ends of the LED filament and connected to the LED chips. The two conductive electrodes are respectively connected to the two conductive supports. The LED filament is curled to satisfy symmetry characteristics.

Abstract: A light assembly is provided with a circuit board, a connector and a first light emitting device. The circuit board is formed with a first conductive path and a second conductive path. The connector is supported by the circuit board and includes a first terminal connected to the first conductive path and at least two second terminals connected to the second conductive path. The at least two second terminals are arranged radially symmetrical about an axis and are adapted to engage mating terminals of a mating connector when the mating connector is oriented in both a first position and in a second position that is angularly offset from the first position about the axis. The first light emitting device is supported by the circuit board and in electrical communication with the first conductive path and the second conductive path.

Abstract: An elongate tubular lighting assembly having a body with a length between spaced first and second ends. The tubular lighting assembly has a source of illumination and first and second connectors respectively at the first and second body ends. The first connector has cooperating first and second parts having first and second surfaces. The first and second connector parts are configured so that the first and second surfaces are placed in confronting relationship to prevent separation of the first and second connector parts with the body in an operative state as an incident of the first connector part moving relative to the second connector part from a position fully separated from the second connector part in a substantially straight path that is transverse to the length of the body into an engaged position.

Abstract: The present invention relates to a holding device (100) for a light source (200), comprising a first portion (110) and a second portion (120). The first portion and the second portion extend at least partly in a common plane. The second portion is movable relative to the first portion from a first position, before insertion of the light source, in which the first portion and the second portion form a slit (130) for receiving the light source, and to a least a second position, after insertion of the light source, in which the second portion clamps the light source in the slit. Further, a lighting assembly and a display unit comprising such a holding device and a light source is disclosed. The holding device comprises fewer parts and is easier to manufacture as compared to prior art devices.

Abstract: A fork type electrical connector for use in providing an electrical joint includes a first connector part having a body that supports two spaced prongs; a second connector part including a conductive element with a first face and a second opposing face and which is shaped so as to define a rail flanked on opposing sides by respective spaces; and a pair of outer legs which extends on opposite sides of the element containing the first face from a respective outer edge of a respective space. In a position of use, the prongs extend through respective spaces in the element with the inner edges engaging the edges of the rail to provide an electrically conductive connection and the outer edge of the prongs engaging the legs to apply a force to the prongs that resists the reaction force generated between the prong and the rail.

Abstract: The present invention relates to a LED tube (1) for retrofitting in a fluorescent tube lighting fixture having a preheat phase during which the fluorescent tube lighting fixture is arranged to preheat filaments of a fluorescent tube, the LED tube (1) comprising: an array of LEDs (2), a LED driver (4) for driving the array of LEDs (2), a first pair of contact pins (8, 0) at a first end (12) of the LED tube (1) and a second pair of contact pins (14, 16) at a second end (18) of the LED tube (1) for connecting the LED tube (1) electronically and mechanically to the fluorescent tube lighting fixture, the first pair of contact pins (8, 10) being connected forming a first circuitry, the second pair of contact pins (14, 16) being connected forming a second circuitry, the LED driver (4) being connected between the first circuitry and the second circuitry, and a temperature controlled switch (20) having an open state and a closed state, and being arranged to adapt the closed state when heated, such that a current path

Abstract: A lighting apparatus according to an embodiment includes a globe, an optical element including a scattering portion inside and transparent to visible light, and a light source disposed to be opposed to a light incident surface of the optical element. The scattering portion is disposed inside the globe.

Abstract: A waterproof LED decorative bulb comprises a lampshade, a horizontal first circuit board, and a plurality of patch LED luminous bodies, the first circuit board is connected with a conductive pin, underneath of the conductive pin is electrically connected with a vertical second circuit board, a lower end of the second circuit board is electrically connected with a hard vertical pin-type electrode and a upward-bending conductive wire, underneath of the conductive pin is provided with a silica gel cushion, a bottom of the lampshade is provided with an outer threaded connection portion which is in threaded connection with a metal connecting base, a bottom of the silica gel cushion is fitted with an inner bottom of the metal connecting base, the pin-type electrode pierces through the silica gel cushion and extends out of a through hole at the bottom of the metal connecting base to form an extending portion.

Abstract: A mechanism excellent in assembly workability of a light emitting device and capable of stably protecting a soldered portion between a lead wire and the electrode part of a flash discharge tube against static electricity. A strobe panel scatters light emitted by the flash discharge tube. A strobe base holds the strobe panel. A strobe cover is attached to the strobe base in a manner covering the flash discharge tube and the strobe panel. An elastic case shields between a gap between the strobe base and the strobe cover meet and the electrode part of the flash discharge tube, and between another gap between the strobe base and the strobe panel and the electrode part of the flash discharge tube. A non-conductive elastic adhesive is filled between the elastic case and the electrode part in a manner sealing the electrode part.

Abstract: In a lamp: an LED module and a circuit unit for lighting are housed within an envelope composed of a globe and a case; the LED module is attached to an end of an extension member that extends from a mount, which closes an opening at one end of the case, into the globe; the circuit unit is mounted inside the case; an insulation member disposed inside the case ensures insulation between the mount, which is made of metal, and the circuit unit; the insulation member has a bottomed cylinder portion inserted into the mount, and a protrusion portion formed on an outer circumference of the based cylinder portion that protrudes toward an inner surface of the mount; and the insulation member is attached to the mount by the protrusion portion pressing against the inner surface of the mount.

Abstract: A light-emitting device is provided that can extract light in all directions and that has wide directivity. This light-emitting device includes: an elongated bar-shaped package extending sideways, the package being formed such that a plurality of leads are formed integrally with a first resin with part of the leads exposed; a light-emitting element that is fixed onto at least one of the leads and that is electrically connected to at least one of the leads; and a second resin sealing the light-emitting element. In the light-emitting device, the first resin and the second resin are formed of optically transparent resin, and the leads have outer lead portions used for external connection and protruding sideways from both left and right ends of the package.

Abstract: This compact fluorescent lamp includes a discharge tube arrangement with at least one discharge tube formed of glass and enclosing a discharge volume filled with a discharge gas. A ballast circuit is connected to the electrodes disposed at each end of a continuous arc path for controlling the current in the tube. A substantially spherical portion of an outer envelope encloses the tube arrangement and an elongated end portion encloses the ballast circuit. The end portion of the outer envelope is closed and sealed by a seal formed of the same material as the material of the outer envelope. In the associated method of manufacture, the envelope is separated by cutting along a circumferential line into an upper part and a lower part, the ballast circuit introduced into the lower part and respective lead-in wires and the lead-out wires are short and need not be insulated. The ballast circuit and the discharge tube arrangement are held and supported in the outer envelope by the connecting wires and fixing means.

Abstract: An ultraviolet enhancer (UVE) holder (428) may be configured to attach a UVE (424) having an outer envelope (530) to an electrical lead (420) of a lamp (400) and to retain the UVE (424) within the lamp (400) in a desired position. The UVE holder (428) may include a plurality of turns (640) comprising a first turn (642) and a final turn (644). The first and final turns (642, 644) may have a substantially similar inner diameter (D) defining a through passage (646) shaped to conformingly receive the outer envelope (530) of the UVE (424). The UVE holder (428) may further include a first leg (534) depending from the first turn (642), wherein the first leg (534) may have a first distal portion (648) remote from the first turn (642) defining a first attachment region (650) adapted for attachment to a lamp capsule electrical lead (410).

Abstract: A lamp holder connector includes a lamp box and at least one pair of lamp bases assembled to the lamp box. The lamp box includes a first upper holder, at least one pair of first lower holders assembled to the first upper holder, and at least one pair of first terminals received in the lamp box. Each side of the first upper holder defines an elastic portion. An outer face of each elastic portion defines at least one fastening portion. Each lamp base includes a second upper holder assembled to the first lower holder, a second lower holder assembled to the second upper holder, and a second terminal received in the second lower holder. At least one side of the second upper holder defines a receiving groove for receiving the elastic portion. A sidewall of the receiving groove defines at least one fastening hole for buckling the fastening portion.

Abstract: In a discharge tube, a conductive ferrule is provided on an end portion of a glass tube. The ferrule includes a body that is to be mounted to the outer circumference of the glass tube and has a contact portion to be electrically conductively fixed to a relay connector (or a bearing device). Further included is a conductive portion that extends from the body so as to have elastic contact with an outer lead. The outer lead will not be under load due to the weight of the discharge tube, but the conductive portion solely has elastic contact therewith. Thus, stress concentration on the outer lead can be prevented.

Abstract: A light-emitting device is provided that can extract light in all directions and that has wide directivity. This light-emitting device includes: an elongated bar-shaped package extending sideways, the package being formed such that a plurality of leads are formed integrally with a first resin with part of the leads exposed; a light-emitting element that is fixed onto at least one of the leads and that is electrically connected to at least one of the leads; and a second resin sealing the light-emitting element. In the light-emitting device, the first resin and the second resin are formed of optically transparent resin, and the leads have outer lead portions used for external connection and protruding sideways from both left and right ends of the package.

Abstract: In a lighting device 10, a discharge tube 15 includes a glass tube 34, an electrode 34a, an outer lead 35 and a ferrule 36. The electrode 34a is arranged inside the glass tube 34. The outer lead 35 makes electrical connection between the electrode 34a and an external device. The ferrule 36 has a drum shape so as to be fitted onto the glass tube 34 and makes electrical connection between the outer lead 35 and the terminal 14. The ferrule 36 includes a main body 37, a connecting part 40 and a holding part 50. The main body 37 is fitted onto the glass tube 34. The connecting part 40 extends from the main body 37 and is electrically connected to the outer lead 35. The holding part 50 is separately provided from the connecting part 40 and extends from the main body 37. The holding part 50 holds the outer lead 35 and a relative position of the ferrule 36 to the glass tube 34 is defined with the holding part 50.

Abstract: An energy-saving lamp with a high-power double spiral energy-saving light tube. The double spiral energy-saving light tube includes two single spiral light tubes having complementary structure. One spiral light tube rotates into the other in the same direction, they geometrically fit into one another, and they complement one another. The two light tubes work independently. Reliability is improved. Short glass tubes can be used for producing the two single spiral light tubes, and the production process is simple and suitable for mass production. The luminous efficiency of the energy-saving lamp of the invention exceeds 80 lm/W. A single spiral light tube of between 14 and 22 mm in diameter corresponds to the power of the lamp of between 100 and 250 W.

Abstract: Lamp connectors are provided. The lamp connectors include a swinging connector and a rotatable connector. The swinging connector is coupled to a pivot connection point disposed on a first exterior surface of a lamp. The swinging connector is operative to pivot between a first position close in proximity to the lamp and a second position at distance away from the lamp. A portion of the swinging connector may be received and retained by a second exterior surface of the lamp, when the lamp is in the first position. The rotatable connector is attached to an end of a lamp via a rotation mechanism. The rotation mechanism is disposed on the end of the lamp. The rotatable connector includes a surface and a pin protruding therefrom. The pin is offset from a central portion of the end of the lamp.

Abstract: Disclosed is a LED lighting apparatus with one or more swivel connections. The LED lighting apparatus includes a housing with at least one end, at least one light emitting diode extending along the housing and at least one end cap. The end cap has an opening with a sidewall to cap the end of the housing and a surface opposite the opening and spanning the sidewall. At least two pin connectors extend from the surface and are connectable to a standard fluorescent or incandescent light fixture. Various configurations are described such that the housing will rotate within the end caps with application of a rotational force after connection of the pin connectors to the light fixture to adjust the light output direction of the LED lighting apparatus.

Abstract: A lamp includes at least one luminous source (14, 6, 8), in particular a low-pressure discharge lamp, for producing main illumination and having at least one alternative luminous element (22), in particular a light-emitting diode arrangement having at least one LED, for producing alternative illumination, which are arranged on a cap (12) , and having electronics, wherein a switching arrangement, which can be actuated manually, for operating the lamp in the main illumination mode, the alternative illumination mode or in both illumination modes at the same time is provided in the cap.

Abstract: To provide the structure of a filament lamp having a plurality of independent power supply pathways, the structure being capable of preventing the power supply pathways from electrically shorting to each other, a filament lamp formed of a straight-tube shaped luminous part having multiple filaments (F1, F2, F3) divided in the axial direction, and sealing parts (20) on each of opposite ends of the luminous part (10) in which are embedded metal foils (31, 32, 33) corresponding to the number of filaments in an aligned manner, and leads for supplying electricity independently to each filament, the luminous part (10) having a first housing space (11) for housing the filaments and a second housing space (12) for housing the leads (51, 52, 53), the housing spaces be connected and extending in the axial direction.

Abstract: In a discharge tube, a conductive ferrule is provided on an end portion of a glass tube. The ferrule includes a body that is to be mounted to the outer circumference of the glass tube and has a contact portion to be electrically conductively fixed to a relay connector (or a bearing device). Further included is a conductive portion that extends from the body so as to have elastic contact with an outer lead. The outer lead will not be under load due to the weight of the discharge tube, but the conductive portion solely has elastic contact therewith. Thus, stress concentration on the outer lead can be prevented.

Abstract: A foil connector (28, 30) suited for use in a lamp (10) is provided. The foil connector includes a substrate layer (40) formed from an electrically conductive material. A coating (42) is provided for reducing oxidation of the substrate during lamp operation. The coating includes a first coating layer (44) on the substrate comprising a noble metal, a second coating layer (46) spaced from the substrate by the first coating layer, the second coating layer comprising a noble metal, and optionally, a third coating layer (48) spaced from the substrate by the first and second coating layers, the third coating layer comprising a noble metal.

Abstract: A base for attaching to at least one end of a glass tube (12) that has two air-tight sealed ends, the at least one end having a remaining exhaust tube (38) that extends in a tube axis X direction of the glass tube, the base comprising: a base body (46) that is in a shape of a bottomed tube including a tubular part (42) and a bottom part (44), and receives the at least one end; and a pair of base pins (48, 50) that have been disposed upright on the base body (46), wherein the base body (46) has a housing part (52) that has been disposed in a center of the bottom part (44) so as to project in the tube axis X direction, and houses at least part of the remaining exhaust tube (38), and the base pins (48, 50) have been disposed upright on the bottom part (44) in substantially parallel to the tube axis X direction such that the housing part (52) is located between the base pins (48, 50).

Abstract: A mechanical shunt for use in a socket of a string of lights resides in an otherwise typical lamp of a string of lights. The present shunt is a coiled spring shunt held by one of the electrical terminals in the socket so that it is cantilevered toward and in electrical contact with the other electrical terminal. The central portion of the spring shunt has a larger diameter. The lamp holder has bottom that, upon insertion of the holder into the socket, presses down on the central portion of the spring shunt so that its first end is moved out of electrical contact with the first electrical terminal, thereby allowing electrical current to pass through the filament in the bulb.

Abstract: Fluorescent lamp (1) comprising a glass discharge vessel (2) in which a gas is present, which discharge vessel (2) is on two sides provided with a tubular end portion (3) having a longitudinal axis, which end portion (3) includes a glass stem (5), wherein an exhaust tube (6) extends axially outwardly from said stem (5) for supplying and/or discharging gases during the production of the lamp (1), wherein an electrode (8) extends axially inwardly through the stem (5) for generating and maintaining a discharge in the discharge vessel (2), said electrode (8) comprises two pole wires (9) held in position by the stem (5) and connected to plug pins (11) of an end cap (13) fixed to said end portion (3), characterized in that said end cap (13) is at least substantially made of a shrink material.

Abstract: A low-wattage, high intensity arc discharge electric lamp (10) has a thick-walled outer envelope (12) extending along a longitudinal axis (14) and has a bulbous portion (16) and a narrow, cylindrical base (18) including oppositely disposed grooves (20) extending parallel to the longitudinal axis (14). An electrically conductive mounting member (22) has grippers (24) formed on ends (26) thereof to engage the grooves (20). The electrically conductive member (22) has a center portion (28) with a U-shaped segment (30) that is positioned within the base. An arc tube assembly (32) comprises an arc tube (34) having axially extending electrode lead-ins (36, 38) sealed within a shroud (40). The shroud (40) has parallel electrical connections (42, 44) extending therefrom.

Abstract: A metal halide lamp is disclosed comprising an elongated discharge vessel, preferably made of a ceramic material, surrounded by an outer envelope and having a wall which encloses a discharge space containing an inert gas, such as xenon, and an ionizable filling, wherein at both ends in said discharge space an electrode is arranged between which a discharge arc can be maintained along a discharge path, wherein one end of the discharge vessel is mounted in a mounting base, said lamp comprising a band-shaped light-shielding strip extending laterally of the discharge path, and a lead-back conductor supplying current from the mounting base to the electrode at the other end of the discharge vessel, wherein, seen in cross section, the lead-back conductor is positioned within the sector defined by the two lines through the center of the discharge vessel and the edges of said strip.

Abstract: A lamp including an arc tube and a holder is provided. The arc tube includes a pair of electrodes respectively at both tube ends, and forms, between the pair of electrodes, a discharge path which turns in a double spiral substantially on one plane. The holder holds the arc tube in a state of fixing the tube ends of the arc tube and at least one part of the arc tube between the tube ends.

Abstract: A lamp (1) has a preferably tubular container (10) consisting of at least partly transparent material and having a first opening (13) which is sealed by a metallic first seal (11) which preferably contains aluminum, wherein the surface of the first seal (11) facing the interior (17) of the container includes a convexly shaped portion (19). The first closure can be melted on the tube.

Abstract: An exemplary external electrode fluorescent lamp includes a fluorescent tube having two electrodes fixed at two ends thereof, and two inner caps respectively holding the electrodes. Each inner cap includes an electrode receiving portion configured for receiving the electrode, a conductive layer provided at inner surfaces of the electrode receiving portion, a lead receiving portion integrally formed with the electrode receiving portion, and a conductive lead received in the lead receiving portion. The conductive layer contacts the conductive layer. A backlight module employing the external electrode fluorescent lamp is also provided.

Abstract: The invention relates to a lamp base with a plastic base part which has electrical connections for the power supply of at least one lighting device of the lamp, the lighting device being enclosed by a lamp vessel and the electrical connections being configured by metal pins. The first ends of these pins project laterally, perpendicular to the longitudinal extension of the lamp base, from the plastic base part in order to establish electrical contact with the lamp socket, and the second ends are adapted to connect a power supply wire for the at least one lighting device which wire is to the outside of the lamp vessel. The invention is characterized in that the plastic base part has a recess on a lower face of the plastic base part facing away from the lamp vessel, the two ends of the metal pins being disposed in the recess.

Abstract: A socket (10) for a double-ended lamp (12) having an electrical contact (14) at each end (15) has a housing (16) with a base (20) and including spaced apart electrical contact receiving areas (18) formed on the base (20). At least one ejector (22) for the double-ended lamp (12) is associated with at least one of the contact receiving areas (18).

Abstract: The invention relates to a light source comprising: an at least partly light-transmitting elongate discharge vessel filled with an ionizable substance, at least one first electrode and at least one second electrode connected to respective end portions of the light source, between which first and second electrodes a discharge extends during lamp operation, at least one electrode of the first electrode and the second electrode extending laterally with respect to the corresponding end portion. The invention also relates to an assembly of light sources according to the invention.

Abstract: A lamp comprising an arc envelope and a niobium end structure coupled to the arc envelope, and wherein the end structure is shielded from a dosing material disposed within the arc envelope.

Abstract: A high-pressure discharge lamp, in particular a mercury-free high-pressure discharge lamp for a vehicle headlight, has a lamp base (1) and an axially symmetrical discharge vessel (30), in whose discharge space (300) an ionizable filling, containing metal halides, and electrodes (31, 32) are arranged for producing a gas discharge. The discharge vessel (30) is provided with transparent, partial frosting (37), which is limited to a section of the inside or outside of the discharge vessel (30) extending over part of the discharge vessel circumference, this section having a well-defined position with respect to the lamp base (1). Moreover, a simple production method is proposed for partial frosting (37) which is preferably arranged on the inside of the discharge vessel (30).

Abstract: An objective is to provide a compact self-ballasted fluorescent lamp which can reduce occurrence of a short circuit without protecting lead wires extending from each end portion of a spiral arc tube. To achieve the objective, a pair of connection pins is provided on a circuit board of the compact self-ballasted fluorescent lamp, near a periphery of the circuit board so as to oppose another pair of connection pins formed near the periphery. In this way, the pairs of connection pins can be respectively provided directly above the end portions of the spiral arc tube. Thus, lead wires extending from each of the end portions can be connected to a corresponding one of the pairs of connection pins with a relatively short distance. This prevents the lead wires from being in contact with the circuit board, thereby reducing occurrence of a short circuit.

Abstract: The bulb of the lamp is closed at opposite ends by sealing parts (6), with in each case one cap (8) being fitted at one end, the cap having an electrical contact element (13) which is connected in an electrically conductive manner to a supply conductor (15) leading to a luminous means, the contact element being accommodated in a tubular extension (11) of the sealing part. The cap part (8) has an adjustment part (14; 24), which is directed inward with respect to the interior of the lamp and is in contact with the sleeve (11) via a bracket.

Abstract: An arc tube is formed by a glass tube that is turned at a substantially middle thereof and wound around a spiral axis from the middle, to have a double-spiral structure. End portions of the arc tub are wound around the spiral axis. A holder has insertion openings formed therein in such shapes that correspond to shapes of the ends of the arc tube. The insertion openings allow the ends of the arc tube to be inserted along a bottom wall of the holder. The holder also includes guide grooves provided in the areas before the insertion openings in the spiral direction of the ends of the arc tube. The guide grooves allow the end portions of the arc tube to come in contact, and when the arc tube is rotated around the axis, guide the ends of the arc tube to the insertion openings.

Abstract: An eccentric planar fluorescent tube includes an outer planar fluorescent tubular member that extends substantially but not completely about a center point and which is extended by two inner portions that extend from a first peripheral portion of the outer tubular member and on opposite sides of the center point and terminate at ends proximate to an opposite peripheral portion of the outer tubular member and wherein the ends are connected by a leg member for supplying power to the fluorescent tube. In one embodiment, the leg member includes electrical contacts that extend substantially in a plane of the outer tubular member and, in another embodiment, a central adapter may be provided including electrical contacts that extend transversely with respect to the plane of the outer tubular member.

Abstract: A lamp for a light string has a mechanical shunt to allow current to pass to the next light in the event of a missing bulb. A resilient shunt is held in a generally lateral orientation by a shunt holder within the socket. When the hollow base with its bottom opening is inserted into the socket, the walls of the base cam the ends of the shunt away from the electrical contacts on the walls of the socket. Likewise, when the base is removed, the resilient lateral ends of the shunt return to engage the electrical contacts. The timing of the contact by the shunt with the electrical contacts avoids arcing. Additionally, slits formed in the wall of the base allows the Dumet wires to exit the sides of the base in the correct location for engaging the electrical contacts, thus reducing the instances of misaligned Dumet wires.

Abstract: An illumination device (10) that preferably includes a cold cathode fluorescent bulb (30), wherein the illumination device (10) further includes a substantially cylindrical casing (34) positioned about the bulb (30), and a reflector (32) substantially coextensive with a length of the bulb (30). An end cap (40) is provided that includes a locating surface (37) for the reflector (32), and a support for the bulb (30). A mounting member or fitting (18) is provided having a groove (19) adapted to receive a protrusion (42) from the casing (34) that allows relative rotation between the casing (34) and the fitting (18) less than 360°. A watertight fluorescent light (31) is further provided having a special four point seal that includes an O-ring (350) forming seals approximately at four radial positions about a cross sectional profile thereof.

Abstract: A field emission illumination device includes a sealed tubular body, an anode layer, a fluorescence layer and an electron emitting cathode electrode. The sealed tubular body has a light-permeable portion and the anode is formed on an inner surface of the light-permeable portion of the tubular body. The fluorescence layer is formed on the anode layer. The electron emitting cathode is positioned in the tubular body and includes at least one carbon nanotube yarn. In the illuminating process the energy in the field emission illumination device only undergoes transformation from electric energy to luminous energy, so the efficiency of the energy transformation is increased.

Abstract: An external electrode fluorescent lamp and a method for manufacturing the same is disclosed, in which indentations are provided in a surface of a glass tube filled with a discharge gas by etching, and external electrodes are formed at both ends of the glass tube, thereby realizing close adhesion between external electrode and the glass tube.

Abstract: An electronic ballast circuit for a handheld fluorescent task lamp, comprising a self-starting electronic driver circuit operated by a power supply and operable to start and run at least first and second compact fluorescent bulbs from a single output; first and second receptacles for connecting the first and second bulbs to the single output; and a bulb accommodation circuit in the electronic driver circuit that enables operation of the electronic ballast circuit with either starter or non-starter type fluorescent bulbs and with either one or both bulbs.