Abstract: A light source device, includes: an arc tube having a tube spherical portion containing a pair of electrodes disposed along an illumination axis, and a pair of sealing portions extending from both sides of the tube spherical portion; a reflector having a reflection portion disposed in the vicinity of one of the sealing portions of the arc tube for reflecting light emitted from the arc tube toward an illumination area; and a flow regulating unit including a plurality of projecting portions projecting in a direction approximately along the illumination axis to regulate the flow direction of cooling air, and a fixing portion for fixing the plural projecting portions to one of the sealing portions in the vicinity of the tube spherical portion.

Abstract: A light emitting apparatus is provided. The light emitting apparatus includes a light transmissive envelope, a light source being in thermal communication with a heat sink, and a plurality of heat fins in thermal communication with the heat sink and extending in a direction such that the heat fins are adjacent the light transmissive envelope. The plurality of heat fins comprises a carbon nanotube filled polymer composite.

Abstract: A lamp light source comprises: a light-emitting unit having a plurality of semiconductor light-emitting elements arranged as a ring on a front face of a mount so as to principally emit light in a frontal direction; and a circuit unit converting externally-supplied electrical power to cause the semiconductor light-emitting elements to emit the light, wherein a through-hole passes vertically through the light-emitting unit at a point inside the ring of semiconductor light-emitting elements, the circuit unit is at least partly arranged within the through-hole, and a space is provided between the circuit unit and the light-emitting unit.

Abstract: A passive cooling lighting fixture that includes a light diffusing lens. The fixture is self-contained and self-cooled in order to maximize the life span of the light source. The passive cooling system utilizes vented end caps that circulate cool air into the lighting fixture while venting hot air out of the lighting fixture. The light diffusing lens produces a light that is soft enough for use indoors.

Abstract: A light emitting diode (LED) lighting system and method is inherently configurable into a variety of new and retrofit lamp applications. This reduces fixture costs by incorporating the heat removal method, light guide system, and a chassis into one easy to assemble and install structure. It also allows for configuration of a lighting system for determining overall height, overall inner and outer radii, light directivity, lighting intensity, and thermal performance. In retrofit applications, the lighting system can be configured to minimize installation costs. In a preferred embodiment, a LED lighting system is comprised of sub assemblies of LED circuit strips or arrays conjoined to create a multifaceted structure. Each sub-assembly has LEDs mounted on a circuit substrate with conductors to electrically connect the LEDs. These circuits are thermally interfaced and attached to thermally conductive material selected, treated, or processed to obtain desired light reflecting properties.

Abstract: A troffer door assembly having a heat conductive frame assembly, a lens member and a light emitting diode (LED) assembly having a rigid heat conductive brace member, wherein the rigid brace member is affixed to the frame assembly such that the rigidity of the frame assembly is increased and such that heat is passed from the rigid brace member to the frame assembly. Hinge members and latch members are positioned in exterior slots on the frame assembly such that the location of the hinge members and latch members can be adjusted. In this manner installed troffer light fixtures can be retrofitted by replacing the installed troffer door with the troffer door assembly as described.

Abstract: A modular heat sink includes one or more heat sink sections interconnected sequentially to each other to form a polar array. Each heat sink section includes a first connecting part and a second connecting part, where the first connecting part is configured to couple with the second connecting part of another heat sink section. Once assembled, the modular heat sink includes a channel formed substantially through the center of the modular heat sink. Each heat sink section is manufactured using an extrusion process. The assembled modular heat sink has one or more hollow portions within the overall shape that cannot be fabricated in a single extrusion process. One or more LEDs are coupled to the outer surface of the modular heat sink. The modular heat sink, with LEDs coupled thereto, is coupled to a wireway tube and mounted to a post-top light fixture to form an LED luminaire.

Abstract: A light-emitting diode (LED) streetlight structure, which includes a light-emitting module, a power module, and a lamppost. The light-emitting module is disposed on side of the power module; the lamppost is disposed on the other side of the power module and corresponds to the light-emitting module. A heat-dissipating structure is disposed on the surface of a housing of the power module. The heat-dissipating structure corresponds to a power supply in the power module, and can dissipate the heat generated by the power supply and reduce the temperature thereof. Accordingly, heat dissipation of the power supply is enhanced, and hence increasing its lifetime.

Abstract: A fluorescent lamp fixture for mounting a ballast and at least one fluorescent lamp and a method of dissipating heat from the same is disclosed. The fixture comprises a molded housing defining a groove and a hat-shaped metal strip having an outer wall with at least two surfaces in contact with the sides of the groove and at least one flange in contact with the top of the housing. The metal strip also has a pair of inner walls positioned relative to the outer wall so as to define a chamber. At least one fastener is slidably held by the strip such that a portion of the fastener is retained within the chamber and slides along the inner walls. The fastener secures a ballast in direct contact with the flanges whereby heat from the ballast is transferred to the metal strip and dissipated from the housing during use.

Abstract: A luminaire to be carried by a lighting fixture. The luminaire may include a housing, a primary optic disposed within the housing having a reflective inner surface defining an optical chamber, a light source, and a heat sink defining an aperture through which light may propagate. The light source may include a plurality of light-emitting diodes (LEDs). The luminaire may further include a secondary optic positioned adjacent to the light source that may collimate and/or refract light emitted by the light source, and may form a seal between the light source and the optical chamber. The luminaire may further include a color conversion layer configured to change the color of light emitted by the light source.

Abstract: A high-intensity discharge lighting fixture of the type having an optics housing and optics components mounted therein, the fixture comprises a ballast housing having a first member and a second member including at least one airflow channel integrally formed therein, the airflow channel is positioned immediately adjacent the optics housing and is adapted to facilitate free airflow between the ballast housing and the optics housing whereby heat is dissipated from the lighting fixture to the atmosphere.

Abstract: An illumination apparatus includes a light emitting module and a containing base. The light emitting module includes a light guide bar and a light emitting device disposed on an end of the light guide bar. The light emitting device includes a heat dissipating sheet and a light emitting element. The heat dissipating sheet has a first positioning component. The light emitting element is disposed on the heat dissipating sheet for emitting light to the light guide bar. The containing base is used for containing the light emitting module. A second positioning component is formed on a side of the containing base corresponding to the first positioning component. The second positioning component is used for engaging with the first positioning component when the light emitting module is disposed on the containing base, so as to fix a position of the light emitting module relative to the containing base.

Abstract: An example includes an apparatus for circulating a gas, the apparatus including a lamp including a filament, the lamp being substantially linear and elongate. A translucent housing can be disposed around the lamp and define a space between the lamp and the translucent housing. A manifold can be coupled to the translucent housing and define a manifold interior configured to be coupled to a pressure source, the manifold interior being in fluid communication with the space between the lamp and the translucent housing. Furthermore, a seal can be disposed between the translucent housing and the manifold that is configured to resist flow of the gas at a selected pressure. The lamp can be slideably removable through an assembly including the translucent housing sealed to the manifold.

Abstract: A LED lamp tube includes a hollow transparent tube body, a heat-dissipating base disposed in the tube body, a light-emitting module, a control circuit module, an electrical-conductive element, and electrical-conductive caps covering the tube body. The light-emitting module and the control circuit module are provided on two opposite surfaces of the heat-dissipating base respectively. The electrical-conductive element penetrates the heat-dissipating base to be electrically connected to the light-emitting module and the control circuit module. By this structure, the LED lamp tube can be assembled more easily with reduced soldering steps.

Abstract: An indirect troffer-style lighting fixture that is particularly well-suited for use with solid state light sources. An elongated heat sink with a mount surface for light sources runs longitudinally along the fixture. To facilitate heat dissipation, a portion of the heat sink is exposed to the ambient room environment. An elongated specular reflector also runs along the device proximate to the heat sink. The heat sink and the specular reflector are mounted such that a spatial relationship is maintained. Some of the light from the sources impinges directly on the specular reflector and is redirected towards a back surface. The back surface defines a luminous surface that receives light directly from the sources and redirected light from the specular reflector. The back surface and the heat sink mechanically obscure any images of the light sources in the specular reflector such that they are not visible in a viewing area.

Abstract: An LED light engine apparatus is disclosed. The apparatus may provide a simplified, modular method of retrofitting existing luminaires with high-brightness LEDs. The physical structure and method of mounting to the luminaire may enable the light engine to direct the light output such that a wide variety of light output patterns can be achieved in many cases without the need for custom reflectors or optics. The compact size and method and use of heat pipes for heat sinking to the luminaire may enable one or more assemblies to be placed into a luminaire, achieving higher levels of illumination than could be done with LEDs in the prior art.

Abstract: An adapter (1) with at least one electronic component (2) for mounting in a hole (3) extending through or partly through a composite board (4), which includes at least two layers (5) of electrically conducting material that are separated by at least one insulator (6) of electrically insulating material, the adapter (1) including one or more legs (7) adapted for by mounting in the hole (2) to establish electric connection with a first layer (8), and where the at least one component (2) is fitted on a metal item (9) which has a contact surface, and that the contact surface is in electrically and thermally conducting connecting with a contact surface on a second layer (10) when the adapter (1) is mounted in the hole (3).

Abstract: The present invention discloses an electronic lighting device. The device comprises a plurality of light-emitting diodes mounted on a thermal dissipation base and protected by a translucent cover; said device is specially designed to replace fluorescent tubes, i.e., in relation to its general construction; the electronic lighting device of the present invention has an external shape similar to the standard shapes of conventional fluorescent tubes, and an internal electronic circuit responsible for converting the electrical signal from any reactor into an electrical signal applied to light-emitting diodes. The present invention is free from a printed circuit board, and does not require the use of heat dissipation paste.

Abstract: A modular lighting fixture assembly. Multiple light pods can be removably mounted on both lateral sides of a mechanical thermal element, such as an elongated heat sink. The pods can be easily removed for cleaning, maintenance, and transport, for example. A light strip including multiple LEDs can be mounted to a surface of the heat sink on both sides. Each pod has a portion cutaway such that when the pods are mounted to the heat sink, the cutaway portions align with the light strips. Thus, when mounted, the light strip can be adjacent to or protrude into an interior cavity of the pod. The interior surfaces of the pods are shaped to redirect light in a particular output profile. The assembly may be mounted to a ceiling and used as an overhead fixture designed to efficiently light an aisle in a retail space or a storage facility, for example.

Abstract: An air disinfection device aimed at improving the efficiency and quality of air disinfection or sterilization may be achieved through an air disinfection device comprising a body housing a power supply and control unit, which, in turn, comprises an energy storage capacitor, a high-voltage constant current source, an ignition pulse generator, a ferrite-core pulse transformer, and a program control unit. The air disinfection device may also comprise an ultra-violet radiation source in the form of a pulsed gas-discharge lamp mounted on the body and enclosed in a tubular quartz casing. Given that the energy storage capacitor and the pulsed gas-discharge lamp may form a discharge circuit connected to the ignition pulse generator through the ferrite-core pulse transformer, the pulsed gas-discharge lamp may be placed in a bactericidal radiation translucent casing, resulting in convection air-cooling due to a natural draft inside the casing that disinfects and sterilizes surrounding air.

Abstract: A heat sink assembly (216) includes a heat sink (218) having an upper surface (220), a lower surface (222), a non-metal-core circuit board (224) disposed in register with the upper surface (220), and at least one solid state electronic component (SSEC) (226) electrically coupled to the circuit board (224) such that an underside (228) of each SSEC (226) is not in confronting relationship with the circuit board (224). A first thermal interface material (232) is disposed between and thermally coupled to the underside (228) of the SSEC (226) and the upper surface (220), the first thermal interface material (232) being electrically and thermally conductive. A second thermal interface material (236) is disposed in thermal communication with the lower surface (222) and spreads heat to the second heat sink (104), the second thermal interface material (236) being electrically insulating and thermally conductive.

Abstract: A lighting apparatus is shown and described. In one aspect, the lighting apparatus includes a light source, a plate, and frame. The light source can include one or more lighting elements that are in thermal communication with the light source. The plate can have a dissipative portion extending outward from a point of thermal communication between the plate and the light source. The frame can at least partially enclose the light source and may also be in thermal communication therewith.

Abstract: An LED illumination apparatus includes a body, a light source module, a shell, and a driver. The light source module includes a substrate and an LED chip. The light source module is arranged on the body. The shell is made of transparent material and covers the light source module. The driver drives the light source module. A plurality of fins extends on one side of the body away from the light source module. The fins are integrally formed on the body by extrusion technology.

Abstract: A recessed light includes LED light strips; parallel casings each including a groove member, a base member, and a cover wherein each LED light strip is disposed in the casing; sets of two electrical ballasts wherein the electrical ballasts of each set are electrically attached to both ends of the LED light strips respectively; groups of two electrical connectors wherein the electrical connectors of each group are electrically attached to both ends of the LED light strips respectively, and each electrical connector of each group is electrically attached to the electrical ballast of each set; two switching assemblies electrically connected to the electrical connectors respectively, the switching assembly comprising a switch electrically connected to the electrical ballast, and a pull rope extending downward from the switch; and a housing.

Abstract: A LED tubular lamp has a luminous tube, a center column, a plurality of LED chips, fixtures, connective plates and lamp heads; a plurality of grooves are provided on the center column, materials having high reflectivity are provided on the grooves, the plurality of LED chips are arranged on the grooves so as to form a light source with 360-degree light irradiation, the center column is provided in the luminous tube and fixedly connected to lamp heads via the fixtures and the connective plates. The LED tubular lamp can emit light at an angle of 360 degrees, thereby increasing the range of the irradiation of the luminous tube, making light more even and the problem of glaring being solved.

Abstract: A ceiling mounted lighting fixture for insertion in a ceiling grid wherein the source of artificial light is a plurality of light emitting diodes.

Abstract: A linear light-emitting diode (LED)-based solid-state lamp having an electrically insulating heat sink that comprises a honeycomb structure is used to replace a conventional metallic one for efficiently dissipating the heat generated by operating the lamp. The lamp further built with a pair of shock protection switches can operate free of electric shock hazard.

Abstract: A light system comprising an elongated housing; at least one LED light disposed inside of the housing. There can also be at least one lens disposed adjacent to the LED light, In addition, there can also be at least one reflector disposed in the housing, wherein the reflector has a first reflector section disposed adjacent to the LED light and a second reflector section coupled to the first section, and disposed at a distal end opposite the LED light. The first reflector section being substantially round in shape and said second reflector section being substantially round in shape.

Abstract: A light emitting diode lamp includes a lamp base defined a plurality of openings and a number of illumination modules located on the lamp base. Each illumination module includes a number of lamp holders separately located on sidewalls of the openings and a number of illumination units held by the lamp holders and apart from each other. Each illumination unit includes a hollow heat dissipating assembly, at least one lighting assembly contacting the hollow heat dissipating assembly, at least one printed circuit board, and two connection units connected to two opposite terminals of the hollow heat dissipating assembly. The printed circuit board controls a power supply through the lamp holders and at least one of the connection units to the lighting assembly.

Abstract: An improved LED lamp tube and socket assembly intended for the replacement of fluorescent tube style lamps. The new lamp tube featuring a 3-pin end interface wherein a middle or center pin is connected to the LED tube's heat sink to prevent the potential for electrical fires and/or shocks following a failure event such as the LED array making electrical contact with the heat sink of the LED tube. An alternative embodiment bi-pin version of the invention is also disclosed.

Abstract: A tube light structure is provided. A tube electrical starting control board is enclosed in an inner space of the outer tube, and the two end portions of the outer tube are respectively disposed with two contact pins for inputting an electrical source to the electrical starting control board; and at least one tube lamp, wherein two end portions thereof are respectively disposed with a fixing part, two fixing pins are respectively disposed on outer part of the fixing part, one of the fixing parts is formed with an input terminal, and the tube electrical starter is inputted the electrical source by a wire passing through the input terminal. Accordingly, the heat-dissipating effect is increased by enlarging the inner space used for accommodating electrical devices, so that the electrical elements are not easily damaged due to poor heat-dissipating.

Abstract: A LED submarine lighting device includes a light-transmissive lamp tube, a LED substrate mounted inside the light-transmissive lamp and carrying a plurality of LED devices in the top surface thereof for giving off light, a heat conducting bar mounted in the light-transmissive lamp tube and stopped between the bottom surface of the LED substrate and the inside wall of the light-transmissive lamp tube for quick dissipation of waste heat from the LED devices to avoid the serious problem in brightness attenuation, and two end caps respectively fastened to opposing front and rear ends of the light-transmissive lamp tube in a water-tight manner.

Abstract: A LED submarine lighting device includes a light-transmissive lamp tube, a LED substrate mounted inside the light-transmissive lamp and carrying a plurality of LED devices in the top surface thereof for giving off light, a heat conducting bar mounted in the light-transmissive lamp tube and stopped between the bottom surface of the LED substrate and the inside wall of the light-transmissive lamp tube for quick dissipation of waste heat from the LED devices to avoid the serious problem in brightness attenuation, and two end caps respectively fastened to opposing front and rear ends of the light-transmissive lamp tube in a water-tight manner.

Abstract: The heat dissipation device for a LED lamp contains an upper piece, at least a lower piece, and a number of heat dissipation elements. The upper piece has a number of first, second, and third plug holes. The second plug holes are aligned with some first plug holes, and they are connected by conductive layers. The other first plug holes are connected by separate conductive layers. The third plug holes are configured on individual conductive layers. A number of LEDs have their leads threaded through the first plug holes, respectively. The heat dissipation elements have their two ends threaded through a second plug hole and a third plug hole, respectively. The leads and the heat dissipation elements are then soldered to their respective conductive layers. A number of tubular sleeves are sandwiched between the upper and lower pieces and the leads of the LEDs are threaded through the tubular sleeves.

Abstract: A light emitting assembly (10) is fabricated by forming a continuous strip of aluminum heat sink having a pair of fins (32) aligned with the side edges (20) and cutting the continuous strip into a plurality of elongated sections (18). The elongated sections (18) are disposed in spaced and generally parallel relationship to one another and separated by an elongated slot (26) so that adjacent elongated sections (18) are independent of one another. A plurality of light emitting diodes (24) are disposed on the mounting surface (14) of each elongated section (18). Bridges (28) constructed of a material different from the material of the heat sink interconnect the elongated sections (18). An independent cover (52) is adhesively secured to the mounting surface (14) around the light emitting diodes (24) on each elongated section (18). A housing (56) spaced from the fins (32) is disposed over the assembly (10).

Abstract: An improved LED lamp tube and socket assembly intended for the replacement of fluorescent tube style lamps. The new lamp tube featuring a 3-pin end interface wherein a middle or center pin is connected to the LED tube's heat sink to prevent the potential for electrical fires and/or shocks following a failure event such as the LED array making electrical contact with the heat sink of the LED tube. An alternative embodiment bi-pin version of the invention is also disclosed.

Abstract: An LED-based lighting system includes a housing forming one or more apertures, a PCB having conductors on its front-side, and one or more LEDs mounted with the conductors. The PCB mounts with the conductors proximate to a top surface of the housing such that the LEDs emit light through the apertures, and heat generated by the one or more LEDs primarily dissipates through the conductors to the housing. A retrofit apparatus for a light fixture includes a PCB having conductors on its front-side thereof, and one or more LEDs mounted with the conductors. The PCB mounts with the conductors proximate to a surface of a mounting bracket that is configured for mounting to the light fixture, such that when the bracket mounts to the light fixture, heat generated by the one or more LEDs primarily dissipates through the conductors and the structural element to the light fixture.

Abstract: A heat dissipating structure of an LED circuit board includes an LED circuit board having a plurality of soldering points. The soldering points of the LED circuit board are covered by a coating layer including Nanoparticles and a bonding agent. The coating layer has the characteristics of high emitting rate, temperature resistance, and conductivity insulation. On the other hand, the coating layer can increase the contacting areas of the soldering points with the air to enlarge the heat dissipation area of the LED circuit board. The LED circuit board covered by the coating layer is placed in an LED lamp tube to provide good heat dissipation effect.

Abstract: An LED lighting device may include an LED support, which is populated with at least one LED on a front side thereof and a rear side of which is fastened to a rest. The front side of the LED support may be overarched by an electrically insulating, light-permeable and diffusely scattering LED cover, and the LED cover may be overarched by a protection cover resting on the support.

Abstract: A LED tube having double heat sinks is disclosed. One of the embodiment shows a first plurality of light unit is fixed onto the top heat sink, and a second plurality of light unit is fixed onto the bottom heat sink, while with the light chips configured in between the two heat sinks for light emission to the ambient.

Abstract: A heat sink including an inner piece and an outer piece is provided. The inner piece has a side surface. The outer piece is disposed around the inner piece and has an inner side surface, wherein the side surface of the inner piece is riveted to the inner side surface of the outer piece to form an interface, and an area ratio of the interface and the side surface of the inner piece is between 0.6 and 0.95. The light emitting diode lamp using the heat sink is also provided.

Abstract: A lighting device may include a circuit substrate comprising a first surface and a light emitting device, and a cover to which the circuit substrate is installed, so as to receive the light emitting device. The cover includes at least one opening, and at least one portion of a second surface is exposed to an external side though the at least one opening.

Abstract: An illumination system for creating a field of light with which the density, photometric angular distribution, of the projected light can be changed, including a series of light modules including at least one LED, a structural frame of structural rails having electrically insulating elements, within which electrical conductors pass. The structural rails are at least partially composed of a heat conductive material. There is a circuit board which has a heat conductive substrate having slots disposed about the circuit board, and including at least two electrical contact surfaces located along the slots on the circuit board. The LED is mounted to the circuit board which includes at least two electrical contact surfaces located along the slots. There are electrically conductive screws for electrically connecting the LED on the circuit board to the electrical conductors and constructed and arranged to simultaneously provide a thermal transfer from the heat conductive substrate to the structural rails.

Abstract: A structure of lighting device includes a hood, a heat dissipater, at least one substrate board, and a fastener. The hood forms a receiving space, at least one fitting slot, and at least one heat dissipation opening. The fitting slot is located inside the receiving space. The heat dissipation opening is defined in a circumferential surface of the hood. The heat dissipater is received in the receiving space. The heat dissipater forms at least one guide section. The guide section opposes the fitting slot and is received in the fitting slot. The substrate board is electrically connected to at least one light-emitting diode. The substrate board is coupled to the heat dissipater. The heat dissipation opening allows for air circulation for removing heat generated by light-emitting diodes. Further, the heat dissipation opening is formed to have a width W less than 3 mm, and the heat dissipater is arranged to be spaced from a circumferential surface of the hood by a distance greater than 6 mm.

Abstract: The invention discloses an LED daylight lamp tube, comprising a tube body and caps fixedly connected to two ends of the tube body, wherein the tube body comprises: an axial bar-shaped radiator, a radiating face of which is fan-shaped and a heat conducting face of which is provided with at least two axial bar-shaped slots forming included angle; an illuminant, which comprises PCB aluminum substrates corresponding in amount to the bar-shaped slots of the radiator, wherein the front face of each of the PCB aluminum substrates is equipped with a plurality of LED illuminants and the PCB aluminum substrates are clamped in the bar-shaped slots of the radiator; a bar-shaped heat conducting gasket, which is adhered to the back face of the PCB aluminum substrate in a fitting manner and clamped between the PCB aluminum substrate and a heat conducting face of the bar-shaped slot; and a circular arc lampshade, which is in clamped connection with two sides of the radiator and forms the cylindrical tube body with the radiat

Abstract: An LED fluorescent tube structure includes a transparent cover, a cooling block, at least one LED lamp panel and a pair of side covers. The transparent cover includes a heat dissipating opening having a pair of first hooks, and an embedding slot. The top of the cooling block is provided for carrying the LED lamp panel and embedded into the transparent cover. A latch groove at the bottom of the cooling block has a tapered opening for latching the transparent cover. The side covers are sealed onto both end portions of the transparent cover respectively. The latch groove is designed with an angle for enhancing a latching effect to assure the spatial distance of the heat dissipating opening. The latch groove at a position connecting the cooling block is thickened to enhance the strength of the cooling block, prevent deformations, and improve the aesthetic look and using effect.

Abstract: A heat-dissipation structure of an LED lamp is disclosed. The LED lamp includes a metal profile, a lampshade attached to the metal profile from bottom, a lamp head mounted around the combined lampshade and metal profile, a printed circuit board set in receiving recesses bilaterally formed below the metal profile, and LEDs provided on a surface of the printed circuit board facing the lampshade. The heat-dissipation structure is characterized in a downward-bending accurate profile of the metal profile being formed between the receiving recesses, and two pads being each positioned between the flanges and the printed circuit board, the two pads serving to prop two lateral sides of the printed circuit board upward such that the printed circuit board fits the accurate profile and closely contacts the metal profile with increased contacting area. Thereby, the printed circuit board can have heat accumulated in operation rapidly dissipated from the metal profile.

Abstract: The instant disclosure relates to a lamp having a heat dissipating lamp shell particularly suitable for housing solid state light sources. The lamp comprises a lamp shell of stamping construction and a light source unit. The lamp shell comprises an outer pot portion and an inner tray portion substantially concentrically coupled to the outer pot portion. Externally, the lamp shell forms a substantial portion of the lamp. The light source unit comprises a light module disposed on the inner tray portion of the lamp shell, a controller placed at the rear portion of the lamp shell, and an electrical connecter arranged exposedly from the rear of the lamp. The lamp shell of stamping construction is beneficially characterized by the light weight and strong structural integrity, which attribute to the work hardening property of the stamping process.

Abstract: An LED-based light for replacing a conventional fluorescent light in an existing fixture is disclosed. The LED-based light includes an elongated housing, a heat sink extending substantially the length of the housing and having at least one integral retaining portion and a circuit board positioned on the heat sink and having a plurality of LEDs mounted thereon, wherein the at least one integral retaining portion is configured to secure the circuit board to the heat sink.

Abstract: A light emitting diode (LED) lamp includes a tube having a transparent first section and an opaque second section. An LED disposed inside of the tube. The second section is has an inner surface having a light diffusive surface so that the LED light is diffusively reflected. The LED is disposed so that a total amount of direct light from the LED to the first section is smaller than a total amount of indirect light that is incident on the first section as a result of being reflected by the second section (i.e., scattered or diffused light). The LED is disposed so that a light axis of the LED points toward the inner surface of the second section.