| Class / Patent application number | Description | Number of patent applications / Date published |
|---|
| 315115000 | Electric heater for the load device | 25 |
| 20090026965 | LOW-PRESSURE MERCURY VAPOR DISCHARGE LAMP WITH AMALGAM - The invention relates to a lamp system comprising a low-pressure mercury vapor discharge lamp having a discharge vessel ( | 01-29-2009 |
| 20090267518 | Electronic Ballast and Method for Operating an Electric Lamp - The invention relates to an electronic ballast device for operating an electric lamp ( | 10-29-2009 |
| 20110101864 | LAMP WITH SNOW REMOVING STRUCTURE - A lamp includes a bracket having a cover, a lamp body fixed to the bracket by a shaft, a heating device and a pressure switch. The lamp body includes first and second portions at opposite sides of the shaft. The heating device is mounted at the first portion of the lamp body and the cover. The pressure switch is mounted to the cover and engages with a top of the second portion. When a weight of the snow/ice accumulated on the first portion of the lamp body is beyond a set value, the pressure switch controls the heating device to be switched on to melt the snow/ice; when the weight of the snow/ice accumulated on the lamp body decreases to be less than the set value, the pressure switch controls the heating device to be switched off. | 05-05-2011 |
| 20110148305 | DIELECTRIC BARRIER DISCHARGE LAMP - It is provided a dielectric barrier discharge lamp with a metal material in the gas discharge vessel. The metal material increases the efficacy of the lamp. | 06-23-2011 |
| 20130043790 | System And Apparatus For Cathodoluminescent Lighting - Electron sources for a cathodoluminescent lighting system are disclosed. An electron source is a broad-beam reflecting-type electron gun having a cathode for emitting electrons and a reflector and/or secondary emitter electrode and no grids. An alternative electron gun has a cathode having a heater welded to a disk, the disk having an emissive surface on a side facing a dome-shaped defocusing grid and an anode. A lighting system incorporating the electron sources has an envelope with a transparent face, an anode with a phosphor layer to emit light through the face and a conductor layer. The system also has a power supply for providing from five to thirty thousand volts of power to the light emitting device to draw electrons from cathode to anode and excite a cathodoluminescent phosphor, and the electrons transiting from cathode to anode are essentially unfocused. A power-factor-corrected embodiment is also disclosed. | 02-21-2013 |
| 20130063032 | INDUCTION LAMP CONNECTED LIGHT NODE - A ballast system regulates the supply of power to an illuminant. The ballast system has a controller coupled to a power converter. The controller has a processor and a memory communicatively coupled with a bus. The memory comprising a lighting control system, and the processor is configured to execute the lighting control system to cause the power converter to increase or decrease power supplied to an illuminant. | 03-14-2013 |
| 20130127342 | AMALGAM HEATER FOR FLUORESCENT LAMPS - A fluorescent lighting device includes an arc tube, an exhaust tube extending from the arc tube, and an amalgam. A resistive heater is located adjacent to at least one of the arc tube and the exhaust tube. A power supply circuit is operatively coupled with the resistive heater. When the fluorescent lighting device is switched from an OFF state to an ON state, the power supply circuit temporarily energizes the resistive heater, thereby heating the at least one of the arc tube and the exhaust tube while the resistive heater is energized, and automatically de-energizing the resistive heater after said heating. | 05-23-2013 |
| 20130181608 | ELECTRONIC BALLAST - The electronic ballast includes: a square wave generator that includes a plurality of switching elements to convert a DC input voltage to an AC square wave output voltage; a transformer that includes a driving winding, a plurality of control windings, at least one inductive winding and at least one control driving circuit. The control windings controls the plurality of switching elements to turn on alternately; a resonant circuit that constitutes a resonant loop together with the driving winding is electrically connected with an output terminal of the square wave generator to drive the light emitting element. The control driving circuit is connected with two terminals of the inductive winding in parallel and receives a control signal to control a voltage across the inductive winding so as to control conducting time of at least one of the switching elements. | 07-18-2013 |
| 20130342106 | THERMIONIC EMISSION DEVICE - A thermionic emission device includes an insulating substrate, a patterned carbon nanotube film structure, a positive electrode and a negative electrode. The insulating substrate includes a surface. The surface includes an edge. The patterned carbon nanotube film structure is partially arranged on the surface of the insulating substrate. The patterned carbon nanotube film structure includes two strip-shaped arms joined at one end to form a tip portion protruded from the edge of the surface of the insulating substrate and suspended. The patterned carbon nanotube film structure includes a number of carbon nanotubes parallel to the surface of the insulating substrate. The patterned carbon nanotube film structure is connected between the positive electrode and the negative electrode in series. | 12-26-2013 |
| 20140091713 | LOW PRESSURE LAMP USING NON-MERCURY MATERIALS - One embodiment relates to a mercury-free low-pressure lamp having a bulb. The bulb includes an emissive material and one or more phosphors. The emissive material includes at least one of an alkali metal or an alkaline earth metal, wherein when the bulb is in a non-operational state, the emissive material condenses into a liquid or solid, and when the bulb is in an operational state the emissive material forms an emitter, the emitter in combination with one or more gases generate photons when excited by an electrical discharge. The one or more phosphors are configured to convert at least a portion of the photons to other visible wavelengths. | 04-03-2014 |
| 20140210348 | Optoelectronic Semiconductor Chip, Display Comprising a Semiconductor Chip of this Type, and Use of a Semiconductor Chip of this Type or of a Display - An optoelectronic semiconductor chip includes a semiconductor layer sequence having an active layer provided for generating radiation. The semiconductor chip can be operated in a first operating mode and in a second operating mode. The semiconductor layer sequence emits radiation in the first operating mode, while the semiconductor layer sequence emits no radiation in the second operating mode. The semiconductor layer sequence is operated in the forward direction in the first operating mode and in the reverse direction in the second operating mode. A display including a number of semiconductor chips of this type and a use as a motor vehicle headlight are furthermore specified. | 07-31-2014 |
| 20160079317 | PIXEL CIRCUIT AND DISPLAY APPARATUS INCLUDING THE SAME - A display apparatus including: a display unit including a plurality of pixels, each of the plurality of pixels including: a light-emitting circuit including a light-emitting device; and a heating circuit adjacent to the light-emitting circuit, the heating circuit including: a heating device; and a controller configured to generate and output an emission signal for controlling an operation of the light-emitting circuit; and generating and output a heating signal for controlling an operation of the heating circuit, wherein: a first end of the light-emitting circuit is connected to a first power supply voltage; a second end of the light-emitting circuit is connected to a second power supply voltage; a first end of the heating circuit is connected to a first heating power supply voltage; and a second end of the heating circuit is connected to a second heating power supply voltage. | 03-17-2016 |
| 315116000 | Automatic cut-out or voltage regulator for the heater circuit | 13 |
| 20090243491 | FLUORESCENT LAMP DRIVING DEVICE AND LIQUID CRYSTAL DISPLAY APPARATUS USING THE SAME - A fluorescent-lamp-driving device contains a driving control circuit that receives direct current power voltage and a lamp control signal for performing drive control on fluorescent lamps and converts the direct current power voltage to alternating current power voltage, and a transformer containing a winding at its primary side and windings for driving a heater and for maintaining discharge at its secondary side. The alternating current power voltage is supplied to heaters of the fluorescent lamps at their high electric potential side. The driving control circuit increases the frequency of the alternating current power supply to a frequency thereof in which voltage of the fluorescent lamps is equal to a discharge start voltage of the fluorescent lamps or less based on the lamp control signal at a period of starting-up time of the fluorescent lamps. | 10-01-2009 |
| 20110080097 | AIRFIELD LUMINAIRE HAVING OPTICAL REMOVABILITY - Described in an example embodiment is an airfield light where the optical system can be easily removed, e.g., no tools. This allows maintenance of the optical system to be performed elsewhere, reducing the amount of time that airfield maintenance crews have to be spend on the field. | 04-07-2011 |
| 20120112636 | ELECTRONIC BALLAST AND STARTUP METHOD - An electronic ballast and startup method including an electronic ballast operably connected to a lamp having a lamp filament, the electronic ballast having a timer ( | 05-10-2012 |
| 20120248984 | BALLAST AND ASSOCIATED CONTROL CIRCUIT - The embodiments of the present invention disclose a ballast and associated control circuit wherein the control circuit comprises a multi function pin, a preheat cut-off circuit and an over-voltage protection circuit, wherein the multi function pin is coupled to the preheat cut-off circuit and a first switch configured to turn on the first switch at a preheat state of the ballast and to turn off the first switch at the end of the preheat state, and wherein the multi function pin is further coupled to the over-voltage protection circuit and a voltage sense circuit configured to receive a sensed output voltage signal and to stop the ballast after the preheat state when the sensed output voltage is larger than a first threshold. Compared with prior art, the present invention may reduce the volume and lower down the cost of circuit. | 10-04-2012 |
| 20120280619 | HIGH FREQUENCY CATHODE HEATER SUPPLY FOR A MICROWAVE SOURCE - A high frequency cathode heater supply for a microwave source includes a SMPS inverter and an isolation transformer having a primary winding arranged to be powered by the SMPS inverter, a monitor winding passing through primary core assemblies of the primary winding and a secondary winding arranged for connection to the cathode heater. A current monitor is arranged to monitor a current in the primary windings. Signal processing modules are arranged to receive a first input signal from the monitor winding indicative of a voltage across the cathode heater and a second input signal from the current monitor indicative of a current through the cathode heater. The signal processing modules are arranged to output a control signal to the SMPS inverter to control power supplied to the cathode heater dependent on a monitored resistance of, or monitored power supplied to, the cathode heater as determined from the first input signal and the second input signal. | 11-08-2012 |
| 20120313527 | LAMP BALLAST HAVING FILAMENT HEATING APPARATUS FOR GAS DISCHARGE LAMP - Provided is a lamp ballast having a filament heating apparatus for gas discharge lamp, including a PFC converter for receiving an AC input voltage and converting the AC input voltage into a DC bus voltage; an inverter connected to an output end of the PFC converter for converting the DC bus voltage into an AC output voltage for driving gas discharge lamps; and a filament heating apparatus connected to the output end of the PFC converter. The filament heating apparatus includes an auxiliary heating circuit for converting the DC bus voltage into a heating power for pre-heating the filaments of the gas discharge lamps; and a control circuit connected to the inverter and the auxiliary heating circuit for generating an auxiliary voltage according to the heating power to activate the PFC converter. After the auxiliary heating circuit has been operating for a predetermined period of time, the auxiliary heating circuit is turned off first and then the inverter is turned on; or otherwise the inverter is turned on first and then the auxiliary heating circuit is turned off. | 12-13-2012 |
| 20130002138 | AMALGAM TEMPERATURE MAINTAINING DEVICE FOR DIMMABLE FLUORESCENT LAMPS - A fluorescent lighting device includes a ballast and a tube. An amalgam is located within the tube. A resistive heater is operatively coupled with the ballast, to receive electrical power from the ballast while the fluorescent lighting device is in an OFF state. The resistive heater is mounted near the amalgam to transfer heat to the amalgam while the fluorescent lighting device is in the OFF state. | 01-03-2013 |
| 20130020942 | METHOD FOR OPERATING AN AMALGAM LAMP - In a known method for operating an amalgam lamp having a nominal power P | 01-24-2013 |
| 20130076244 | CURRENT-PREHEAT ELECTRONIC BALLAST AND RESONANT CAPACITOR ADJUSTING CIRCUIT THEREOF - A current-preheat electronic ballast includes an AC-to-DC converter, a controlling unit, an auxiliary voltage generator, and an inverter. The inverter is connected with the DC bus for converting a high DC voltage into an AC output voltage and generating a resonant current and a lamp filament current to a lamp group. The inverter includes a resonant circuit and a resonant capacitor adjusting circuit. The resonant circuit provides electric energy required to preheat the lamp group. The resonant capacitor adjusting circuit judges whether the inverter is enabled according to the detecting element. After the inverter has been enabled for a delayed time, two high-voltage switching terminals of the resonant capacitor adjusting circuit are correspondingly conducted or shut off, so that an equivalent resonant capacitance value of the resonant circuit is changed and a voltage drop across two ends of a lamp filament of the lamp group is changed. | 03-28-2013 |
| 20130162143 | LAMP CONTROL SYSTEM, LAMP POWER-SAVING SYSTEM AND METHOD THEREFOR - A power-saving method for a lamp power-saving system is provided. The method includes the following steps. A lamp control unit is provided to control a fluorescent lamp. The lamp control unit includes a power conversion circuit and a preheat and lighting circuit. The preheat and lighting circuit, coupled to the power conversion circuit and two terminals of the fluorescent lamp, preheats and activates the fluorescent lamp, and outputs a feedback signal indicating a current passing through the fluorescent lamp. When the feedback signal indicates the fluorescent lamp is in a preheat mode, a resonant circuit of the preheat and lighting circuit is enabled to preheat the fluorescent lamp via a current path provided by a diode bridge of the preheat and lighting circuit. When the feedback signal indicates the fluorescent lamp is lighted, the current path of the preheat and lighting circuit is disconnected to stop preheating. | 06-27-2013 |
| 20130221849 | FLUORESCENT LAMP ASSEMBLY WITH IMPROVED RUN-UP - A discharge lamp having an improved run-up time is disclosed. In an embodiment, the discharge lamp includes a light-transmissive discharge tube extending from a first end to a second end and having an inner surface and an outer surface, a phosphor coating layered onto the inner surface of the discharge tube, and a fill gas composition capable of sustaining a discharge sealed within the discharge tube. Also included is a resistive heating wire positioned about the outer surface of the discharge tube. In some embodiments, a lamp driver circuit is included that operates when the lamp is turned ON to provide power to electrodes in the discharge tube and to provide power to the resistive heating wire, and operates to disconnect power from the resistive heating wire when the discharge lamp achieves a predetermined percentage of its stabilized lumen output. | 08-29-2013 |
| 20130293107 | BALLAST INCLUDING A HEATER CIRCUIT - A ballast. The ballast includes a power converter, a transformer, a heater circuit, and a controller. The power converter is configured to receive an input power and convert the input power to a relatively high direct current (DC) voltage. The transformer has a center-tapped primary winding coupled to the power converter and a secondary winding coupled to a lamp. The heater circuit is separate from the transformer and is configured to provide a current to an electrode of the lamp to heat the electrode. The controller is configured to control the heater circuit for providing the current to the electrode. | 11-07-2013 |
| 20140292199 | POWER CIRCUIT FOR A GAS DISCHARGE LAMP - A power circuit for at least one gas discharge lamp comprising a first filament and a second filament, the power circuit including an electronic driver circuit, preferably for generating a first alternating voltage between the first and second filament for starting up the gas discharge lamp and for generating a second alternating voltage between the first and second filament for having the gas discharge lamp burn after it has been started up, wherein the power circuit further includes an electronic heating circuit for, at least during generation of the second alternating voltage, generating a first current through the first filament for heating the first filament and/or generating a second current through the second filament for heating the second filament. | 10-02-2014 |
