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| Number | Title | Issue Date |
| 7535180 | Semiconductor light emitting circuits including light emitting diodes and four layer semiconductor shunt devices Semiconductor light emitting circuits include semiconductor light emitting diodes that are serially connected between a pair of input terminals. Four layer semiconductor devices, such as Shockley diodes and/or thyristors are also provided, a respective one of which ... | 05/19/2009 |
| 7298098 | Intellectual lamp unit able to be installed on a conventional lamp socket controlled by a wall switch An intellectual lamp unit able to be installed on a conventional lamp socket controlled by a wall switch includes a bypass connected in parallel with a wall switch and provided with a resistance or a diode for producing potential difference or power phase difference... | 11/20/2007 |
| 7244058 | Interior lamp A vehicle lamp assembly comprised of: a heat sink with at least one flange extending beyond the lamp assembly; a circuit board functionally engaging the inner surface of the heat sink and having a power supply circuitry; at least one light emitting unit electrically... | 07/17/2007 |
| 7242141 | Integrated fuses for OLED lighting device An embodiment of the present invention pertains to an electroluminescent lighting device for area illumination. The lighting device is fault tolerant due, in part, to the patterning of one or both of the electrodes into strips, and each of one or more of these strip... | 07/10/2007 |
| 7221105 | Electromagnetic radiation emitting bulb and method using same in a portable device An electromagnetic radiation emitting bulb, comprising a housing; one or more power input terminals disposed on that housing; a voltage converter disposed within the housing, where the voltage converter is electrically connected to the one or more power input termin... | 05/22/2007 |
| 7191510 | Electroluminescent (EL) lamp with current limiting fuse An electroluminescent (EL) lamp having at least two integral fusible links and a method of manufacturing such a lamp are disclosed. The present invention provides for a fusible link between the front electrode input power contact area and the transparent electrode. ... | 03/20/2007 |
| 7114830 | LED replacement for fluorescent lighting The present invention provides several embodiments of an elongate hollow tubular or solid rod lighting device including a plurality of LEDs therewith and appropriate electrical componentry, and serving as a direct replacement for a conventional fluorescent light tub... | 10/03/2006 |
| 7053557 | Retrofit light emitting diode tube An LED light tube for replacement for fluorescent light tubes includes an elongated cylindrical transparent envelope, a base cap at each end of the envelope, and at least one LED device in electrical communication with the base cap. The LED light tube is adapted for... | 05/30/2006 |
| 7009329 | Thermally optimized cold cathode heater Systems and methods for providing a thermally optimized cold cathode heater in which a heater wire is disposed in a plurality of turns are shown. Turns of the plurality of turns are closely spaced to concentrate heat in an area of a host cathode device corresponding... | 03/07/2006 |
| 6952084 | Intelligent electrical switching device The present invention, according to a preferred embodiment, is directed to portable electronic devices which operate on exhaustible power sources, for example, batteries. The electronic devices of the present invention comprise at least one signal switch and a micro... | 10/04/2005 |
| 6936968 | Retrofit light emitting diode tube An LED light tube for replacement for fluorescent light tubes includes an elongated cylindrical transparent envelope, a base cap at each end of the envelope, and at least one LED device in electrical communication with the base cap. The LED light tube is adapted for... | 08/30/2005 |
| 6906462 | Gas discharge lamp with ignition assisting electrodes, especially for automobile headlights The gas discharge lamp has a burner, which has a discharge vessel with a void, in which a filling of gas and other substances is disposed. Two electrodes protrude into the void, and between them, in operation of the gas discharge lamp, an electric arc develops. On t... | 06/14/2005 |
| 6720718 | Thin walled lamp with tungsten halogen capsule and pyrophoric fuse An efficient and safe lamp with a tungsten halogen capsule may be formed by using a two stage pyrophoric fuse as part of the electrical path to the capsule. The thin walled lamp with tungsten halogen capsule and two stage pyrophoric fuse yields a more efficient, les... | 04/13/2004 |
| 6653784 | Type of light A new type of light includes a casing used for containing an emitting device. Further, the emitting device includes a couple of wires, an insulator ball, a filament and a fuse. The couple of wires are connected with a power supply via the casing, wherein ... | 11/25/2003 |
| 6590323 | Photo diode lamp A photo diode lamp includes lamp head, receiving body, outer shell, cover and photo sensor. There are projections and indents provided on the inner circumference of the receiving body, which receives base and circuit block. The lamp-tube is fixed on the b... | 07/08/2003 |
| 6570327 | Lamp with safety switch The invention relates to an electric lamp (100) whose light source reaches a very high temperature during operation. It mainly relates to a lamp provided with a double envelope such that a fracture or a crack of the outer envelope (2) does not prevent the... | 05/27/2003 |
| 6534924 | Method and apparatus for manufacturing electron source, and method manufacturing image forming apparatus This invention discloses an electron source manufacturing method including the step of applying a voltage to a plurality of conductive members by applying a potential to first portions of the plurality of conductive members serving as at least part of ele... | 03/18/2003 |
| 6525479 | Method and ballast for operating a lamp fitted with a fluorescent tube The invention relates to a method and ballast for operating a lamp (3) fitted with a fluorescent tube (2), whereby the operating data of certain recognizable lamp types (T1, T2, Tn-1, Tn), at least the lamp volt... | 02/25/2003 |
| 6326728 | Type of light A new type of light comprises a casing used for containing an emitting device. Further, the emitting device comprises a couple of wires, an insulator ball, a filament and a fuse. The couple of wires are connected with a power supply via the casing, wherei... | 12/04/2001 |
| 6316878 | Electric-light bulb The electric-light bulb is capable of limiting an inrush current and automatically periodically changing brightness. In the electric-light bulb, a filament is provided in a bulb body. A resistance is provided in the bulb body and connected to the filament... | 11/13/2001 |
| 6081246 | Method and apparatus for adjustment of FED image A system and method for making adjustment to pixel boundaries of images in a screen display includes active adjustment of the ratio of the anode voltage and an extraction structure voltage to obtain a desired screen display effect. The viewer can thus act... | 06/27/2000 |
| 6037854 | Thermal fuse for fluorescent lamps A fluorescent lamp thermal fuse arrangement is disclosed. The arrangement in a preferred embodiment comprises a fluorescent glass tube lamp, a thermal fuse wrapped externally around an end of the lamp, electrically insulated mechanical means, lead portion... | 03/14/2000 |
| 5684366 | Lamp protection device A lamp protection device includes a circuit to prevent a lamp from being switched on at full line voltage and which provides for the gradual heating of the filament to reduce the expansion rate of the filament. The circuit is connected to a switched alter... | 11/04/1997 |
| 5646484 | High reliability incandescent portable illumination system A high reliability portable incandescent illumination system for use in applications which require a reliable, high output light source such as heliport markers, runway lights, warning lights, road hazard and obstruction lights. The required elements of t... | 07/08/1997 |
| 5565736 | Discharge lamp provided with a bimetal switch, and bimetal switch suitable for a lamp A high-pressure discharge lamp includes a discharge vessel which is enclosed with intervening space by an outer bulb. The lamp is provided with a starter circuit constructed as a starter unit comprising a bimetal switch and glow switch starter. The bimeta... | 10/15/1996 |
| 5545952 | Self grounding lamp for special use in an underwater environment An incandescent bulb for use in a submerged swimming pool light fixture is disclosed, which includes a filament, at least one spring-biased filament support, and a grounding device. The filament support includes an exposed current-conducting portion and i... | 08/13/1996 |
| 5532557 | Electric light socket constructions Light socket improvements include a thermal conductor which removes heat by inducing a flow of air within the socket and/or which acts as heat sink that more efficiently transfers heat to the socket support thereby enabling use of higher wattage light bul... | 07/02/1996 |
| 5530318 | EL lamp with integral fuse and connector An electroluminescent lamp includes at least one bus bar attached to an electrode of the lamp. The bus bar has a gap and a conductive trace bridges the gap. The trace is preferably an isolated segment of the front electrode of the lamp and is made when th... | 06/25/1996 |
| 5355053 | High pressure sodium lamp starting aid A starting aid for high pressure sodium vapor lamps eliminates the need to mechanically connect an ignition wire to the lamp frame. The starting aid employs an ignition wire which is slidably clipped directly to the arc tube at one end and which is connec... | 10/11/1994 |
| 5336974 | High-pressure discharge lamp The invention relates to a high-pressure discharge lamp including a discharge vessel and an outer envelope which encloses a space. The lamp has an igniter circuit which has a voltage-dependent capacitor and a resistor which are integrated so as to form a ... | 08/09/1994 |
| 5325017 | High-pressure discharge lamp having solid state getter mounted on bimetallic element The invention relates to a high-pressure discharge lamp (2) provided with a discharge vessel (3) with a ceramic wall (3a) and provided with a bimetal element (11) which rests against the discharge vessel wall in the cold state of the lamp, and which is re... | 06/28/1994 |
| 5109183 | High pressure discharge lamp having a simplified mount construction A high pressure sodium discharge lamp having an arc tube mounted within a lamp envelope and having a resistor connected electrically in series with the arc tube. An insulative body is provided between the arc tube feed-through closest to the stem and a ri... | 04/28/1992 |
| 5051657 | Safety filament assembly for double-enveloped arc discharge lamp An electric lamp assembly includes a sealed outer envelope, an arc discharge tube mounted within the outer envelope, a safety filament connected in series with the arc discharge tube for extinguishing the arc tube within a predetermined time after the out... | 09/24/1991 |
| 4992703 | Metal halide lamp with dual starting electrodes and improved maintenance A metal halide high intensity discharge lamp having an arc tube assembly including a pair of discharge electrodes and a pair of starting electrodes. Each starting electrode is adjacent a respective discharge electrode. During starting, the lamp makes the ... | 02/12/1991 |
| 4973881 | Automatic shut-off device for an electric lamp An electric lamp is provided having an outer envelope or jacket with a lamp base attached thereto, the lamp base having an aperture extending therethrough. A sealed inner capsule is supported within the outer envelope and electrically connected to the lam... | 11/27/1990 |
| 4963793 | Delayed response touch switch controller The present invention provides a very low actuation force touch control switch for use in brightness control of illumination devices. The control switch comprises a flexible membrane having a plurality of conductors disposed on one surface and secured to ... | 10/16/1990 |
| 4922155 | Protective circuit for reduced voltage lamps A fail safe feature for long life reduced voltage lamps including diodes id disclosed. As known, a low wattage lamp may designed for longer life by using a lower root mean square design voltage. The root means square voltage of the alternating source curr... | 05/01/1990 |
| 4752718 | High intensity discharge lamp with integral means for arc extinguishing A high intensity discharge lamp having an inner tube in which a discharge takes place to produce visible light and ultraviolet radiation and an outer envelope which blocks harmful ultraviolet radiation. A mechanical switching element is provided to exting... | 06/21/1988 |
| 4751623 | Heat deactivated illumination device An illumination device according to the present invention generally includes a housing, electrical plug prongs, a connector portion associated with the housing for receiving and electrically contacting a light bulb, and a heat sensitive electrical circuit... | 06/14/1988 |
| 4751432 | High-pressure discharge lamp The invention relates to a high-pressure discharge lamp comprising an outer bulb accommodating a first and a second discharge vessel, these discharge vessels being connected electrically in series. According to the invention, the second discharge vessel i... | 06/14/1988 |
