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WITH SIGNAL, INDICATOR, OR ALARM

Subclass of:

315 - Electric lamp and discharge devices: systems

Patent class list (only not empty are listed)

Deeper subclasses:

Class / Patent application numberDescriptionNumber of patent applications / Date published
315130000 Plural load device systems 61
315136000 Electrically operated switch controlling the signal circuit 8
315134000 Radiant energy responsive control type 5
20100264829LIGHT SOURCE APPARATUS - A light source apparatus includes an excitation-light source, a first light guiding member and a second light guiding member which guide excitation light emitted from the excitation-light source, a wavelength converting member which is installed near an emitting end of excitation light from the excitation-light source of the first light guiding member and the second light guiding member, and which receives excitation light which has been guided by one of the first light guiding member and the second light guiding member, and emits a wavelength-converted light of a wavelength different from a wavelength of the excitation light, a first light receiving element which is installed near the wavelength converting member, and which directly or indirectly receives the wavelength-converted light of which, the wavelength is converted by the wavelength converting member, and an optical path switching section which guides the excitation light to one of the first light guiding member and the second light guiding member according to an output of the first light receiving element.10-21-2010
20120146516SYSTEM FOR MANUFACTURING POWER SUPPLY UNIT AND METHOD FOR MANUFACTURING POWER SUPPLY UNIT, AND FLICKER MEASUREMENT APPARATUS - A method of manufacturing a power supply unit (PSU) is provided. The method includes providing at least one PSU supplying a dimming signal to at least one light source, performing a first test for electrical characteristics of the at least one PSU, detecting light emitted from the at least one light source, measuring a flicker of the at least one light source, and performing a second test for a state of the at least one PSU based on a flicker measurement result, and packing a PSU determined to be in a normal state among the at least one PSU, as a result of the first test and the second test.06-14-2012
20120074848METHOD AND SYSTEM FOR MONITORING PERFORMANCE OF A DISCHARGE LAMP AND CORRESPONDING LAMP - The present invention provides a method of monitoring performance of a discharge lamp. The discharge lamp includes electrodes and a discharge vessel filled with gas and equipped with a luminescent layer, wherein the gas is intended to emit a first ultraviolet light in a first spectral range when the gas is excited by an electric field produced by the electrodes, and at least part of the first ultraviolet light is intended to be changed into a second ultraviolet light in a second spectral range of longer wavelength than the first spectral range by the luminescent layer. The method comprises the steps of finding the value of a first intensity of the first ultraviolet light; finding the value of a second intensity of the second ultraviolet light; and determining the conversion efficiency of the luminescent layer for converting the first ultraviolet light into the second ultraviolet light on the basis of the ratio of the value of the second intensity to the value of the first intensity.03-29-2012
20080224618DISCHARGE LAMP HAVING A VISUAL-CHANGE TIMER - A discharge lamp having a visual-change timer is described. The visual-change timer is comprised of a ceramic material that provides an indication of the cumulative operating time of the lamp. The visual-change timer is expected be a help to consumers in avoiding unnecessary, premature, and costly lamp replacement and a help to lamp manufacturers in verifying the validity of warranty claims for replacement lamps.09-18-2008
20130140993FAILSAFE LIGHTING SYSTEM - A failsafe lighting system (06-06-2013
315133000 Plural signals, indicators, or alarms 3
20100134020LED LIGHTING CONTROL INTEGRATED CIRCUIT HAVING EMBEDDED PROGRAMMABLE NONVOLATILE MEMORY - For providing a compact high-precision lighting control means to drive an LED lighting module, a lighting control integrated circuit is set forth to perform an accurate lighting control. At least one nonvolatile memory is embedded in the lighting control integrated circuit for storing a plurality of lookup tables. One lookup table provides related data for setting the driving currents of the LED lighting module based on spacing or pitch of LED disposition of the LED lighting module. Another lookup table provides related data to recover uniformity for different LED damage situations of the LED lighting module. The other lookup tables are applied to perform compensation processes on the driving currents concerning temperature variation, ambient light intensity, aging degradation, and power-on time. In addition, a signal processing unit, a pulse-width-modulation signal generating module, and a driving module are incorporated in the lighting control integrated circuit for signal processing and current driving.06-03-2010
20110095691Lighting Apparatus And Lighting Fixture - A lighting apparatus includes a lighting circuit unit, a timer unit, a life judgment unit, a timing adjustment unit, and an indication unit. The lighting circuit unit is configured to activate a light source. The timer unit is configured to measure accumulated operation time of the lighting circuit unit. The life judgment unit is configured to store a first judgment time and a second judgment time longer than the first judgment time. The life judgment unit is configured to compare the accumulated operation time with the first judgment time and output a first judgment signal when the accumulated operation time becomes equal to the first judgment time. The life judgment unit is configured to compare the accumulated operation time with the second judgment time and output a second judgment signal when the accumulated operation time becomes equal to the second judgment time. The timing adjustment unit is configured to vary timing at which the life judgment unit outputs the first judgment signal. The timing adjustment unit is configured to vary timing at which the life judgment unit outputs the second judgment signal. The indication unit is configured to indicate, upon receiving the first judgment signal from the life judgment unit, a first level of the end of life with the light source kept turned on. The indication unit is configured to indicate, upon receiving the second judgment signal from the life judgment unit, a second level of the end of life. The second level of the end of life is later than the first level of the end of life.04-28-2011
20110050106Online Time Dimmer - An online time dimmer is disclosed, which comprises a base, an electric circuit unit lodged in the base and a top cover joined with the base correspondingly. The electric circuit unit is functionally made up of a dimmer circuit and a time circuit, and structurally comprises a power switch and a time switch, which are activated by a switch button and a time button respectively. When in use, one end of the unit connects electrically to a power supply through electric wires and a plug, while the other end to a lighting load through electric wires. Once depressing the switch button will in turn press the power switch, which activates power-on, power-off and the adjustment of brightness operated on the lighting load through the dimmer circuit. And depressing the time button will in turn press the time switch, which enables the time circuit to operate time setting on the lighting load.03-03-2011
315135000 Discharge device and/or rectifier in the signal circuit 1
20110254452GAS DISCHARGE LAMPS - An electronic ballast (10-20-2011
Entries
DocumentTitleDate
20130026927ILLUMINATION DEVICE AND ILLUMINATION SYSTEM - An illumination device (01-31-2013
20080258631Light-adjusting and current-limiting control circuit - A light-adjusting and current-limiting control circuit for a lamp includes a sampling circuit formed of a manganese-copper line or a current transformer, a power circuit provided with resistors, capacitors, diodes, a Varistor and a zener diode, a signal adjusting circuit composed of diodes, resistors, a varistor, triacs and capacitors, and a control output circuit having a thyristor, diodes, a relay and an LED. The control output circuit can be replaced with a light-adjusting input circuit, a chip processor control circuit, a zero-crossing detection circuit and a two-way silicon controlled rectifier control output circuit 10-23-2008
20110193484Flexible Electrical Connection Of An LED-Based Illumination Device To A Light Fixture - An electrical interface module (EIM) is provided between an LED illumination device and a light fixture. The EIM includes an arrangement of contacts that are adapted to be coupled to an LED illumination device and a second arrangement of contacts that are adapted to be coupled to the light fixture and may include a power converter. Additionally, an LED selection module may be included to selectively turn on or off LEDs. A communication port may be included to transmit information associated with the LED illumination device, such as identification, indication of lifetime, flux, etc. The lifetime of the LED illumination device may be measured and communicated, e.g., by an RF signal, IR signal, wired signal or by controlling the light output of the LED illumination device. An optic that is replaceably mounted to the LED illumination device may include, e.g., a flux sensor that is connected to the electrical interface.08-11-2011
20090001891Emergency Lighting - An emergency lighting system comprising light units and sensors, such as heat detectors, smoke detectors and motion detectors, operable to activate the light units. In the preferred embodiment, the light units are operable to adopt a selected one of at least two illuminated stated depending on the state of the sensors. Each illuminated state may involve the display of a symbol, text message or illumination pattern such as an arrow or a warning indicator, and/or may involve the emission of a respective illumination colour. The emergency lighting system may be associated with a set of stairs in order to illuminate the stairs when activated.01-01-2009
20090236993INSPECTION CIRCUIT, ELECTRO-OPTIC DEVICE, AND ELECTRONIC APPARATUS - An inspection circuit for inspecting an electro-optic device that includes a data line, a scanning line, a pixel portion, a driving circuit, and a first terminal portion through which a first power supply voltage is supplied to the driving circuit. The inspection circuit includes an inspection line electrically connected to an inspection unit inspecting the pixel portion, a connection circuit electrically connecting the inspection line to the data line, and a supply circuit supplying a control signal for controlling conduction between the data line and the inspection line to the connection circuit. The supply circuit is driven using a second power supply voltage supplied through a second terminal portion.09-24-2009
20090096381Control of Delivery of Current Through One or More Discharge Lamps - Control of delivery of current through one or more discharge lamps. Methods include alternately switching on and off switching elements that control a fluorescent lamp, in response to receiving input, until the brightness of the lamp decreases to a threshold. Further, methods include providing control signals at complementary duty cycles to further decrease the brightness and alternating the duty cycles of the signals applied to the filaments of the fluorescent lamp.04-16-2009
20130099672ILLUMINATION SYSTEM AND CONTROL METHOD OF ILLUMINATION SYSTEM - The invention discloses an illumination system and a control method of illumination system. The illumination system includes a portable electronic apparatus, a lamp-controlling module and at least one lamp. The control method of an illumination system includes following steps: generating a wireless control signal according to a color distribution of a selected pattern; generating a lamp-controlling signal according to the wireless control signal; respectively adjusting a light-emitting state of the lamp according to the lamp-controlling signal.04-25-2013
20090261734Method of Programming a Lighting Preset From a Radio-Frequency Remote Control - The present invention provides a method of programming a preset intensity of a dimmer switch from a radio-frequency (RF) remote control. A user is able to adjust the intensity of the lighting load to a new intensity and subsequently press and hold a preset button on the remote control to program the new intensity as the preset intensity. The remote control transmits a wireless transmission to the dimmer switch, which immediately responds to the actuation of the preset button by controlling the intensity of the lighting load to an initial preset intensity. The dimmer switch then blinks a light-emitting diode representative of the new intensity to provide feedback that the dimmer switch is in the process of programming the preset intensity to the new intensity. Eventually, the dimmer switch stores the new intensity as the preset intensity and stops blinking the light-emitting diode.10-22-2009
20090167190Apparatus and Method for a Light-Emitting Diode Lamp that Simulates a Filament Lamp - Disclosed herein is a circuit assembly comprising a light-emitting diode (LED) load in combination with a filament bulb simulation circuit, the filament bulb simulation circuit being configured to simulate a load that would be presented to a monitoring system by a filament bulb. In this manner, a filament bulb can be effectively replaced with one or more LEDs and thereby achieve power consumption savings. Also disclosed is a method for monitoring an LED circuit assembly with a monitoring system to determine whether the LED circuit assembly is deemed operational.07-02-2009
20080278081SIGNALING MODULE, LIQUID CONTAINER, RECORDING APPARATUS, AND CONTROL METHOD - An ink tank receives data signals from a printer and an LED provided on the ink tank is driven on the basis of the received data signals. The LED is driven in an inactive time period that is different from the time period in which the date signals are input to the ink tank.11-13-2008
20120293073APPARATUS FOR DRIVING A GAS DISCHARGE LAMP - A method of generating a measuring signal indicating arc straightness in a gas discharge lamp (L) comprises the following steps: in a first step, applying a first lamp current (IN) to the lamp; in a second step, adding a brief pulse current (Ip) to the first lamp current (IN), allowing the lamp voltage to regain a steady state, and measuring the resulting average value of the lamp voltage (V11-22-2012
20100141151X-RAY TUBE AND METHOD FOR EXAMINING A TARGET BY SCANNING WITH AN ELECTRON BEAM - The invention relates to an X-ray tube, especially a microfocus X-ray tube (06-10-2010
20110140610Sound Pressure Level Calibration for Ultrasound Based Gesture Light Controlled System - A lighting system comprising a lamp arranged to transform electricity into a light beam having properties such as intensity, colour, colour temperature, direction and beam cone angle, a light control means arranged to adjust said light beam properties, an ultrasonic transmitter arranged to transmit ultrasonic signals, an ultrasonic receiver arranged to receive reflected ultrasonic signals, and a processing means arranged to derive a time-of-flight signal representing the time differences between said transmitted and received ultrasonic signals and to send control signals to said light control means in dependence of said time-of-flight signal, wherein said processing means is further arranged to perform a sound pressure level calibration step wherein the amplitude of the received reflected ultrasonic signal of the receiver is measured and wherein the amplitude of the transmitted ultrasonic signal of the transmitter is adjusted such that the amplitude of the received reflected signal approximates a predetermined threshold value.06-16-2011
20090121640Discharge Lamp Ballast Apparatus - A discharge lamp ballast apparatus includes a fault detecting section 05-14-2009
20090079348DISCHARGE LAMP LIGHTING APPARATUS AND DISCHARGE LAMP LIGHTING CONTROL METHOD - A chopper circuit generates a voltage to be supplied to a primary side of a transformer, and an inverter circuit supplies an output voltage of the chopper circuit to the primary side of the transformer in a positive phase or a negative phase. Thereby, an electric-discharge lamp connected to a secondary side of the transformer is lighted. A controlling section detects a lamp current, and thereby determines a type of the electric-discharge lamp. The controlling section decides the control value optimal for the chopper circuit and the inverter circuit on the basis of the determination result. The controlling section controls the chopper circuit and the inverter circuit with the decided control value. Thereby, the lighting device drives the electric-discharge lamp in an optimal state. For instance, the lighting device always makes the electric-discharge lamp lighting in a 100% light-modulated state regardless of its type.03-26-2009
20100219759SHORT-CIRCUIT DETECTION METHOD AND RELATED CIRCUIT - A short-circuit detection method provides a dimmer signal for driving a light source and a feedback signal which varies according to the voltage drop across the light source. When the voltage level of the feedback signal is below a reference voltage, a high-level compare signal is provided. When the voltage level of the feedback signal is above the reference voltage, a low-level compare signal is provided. When the dimmer signal is at high level and the compare signal is at low level, a high-level count signal is provided. When the count signal has switched to high level more than a predetermined number of times, a short-circuit signal is outputted.09-02-2010
20100127626Load Control Device Having A Visual Indication of Energy Savings and Usage Information - A dimmer switch for controlling the amount of power delivered to and thus the intensity of a lighting load comprises a visual display operable to provide a visual indication representative of energy savings and usage information. The visual display may comprise a single visual indicator or a linear array of visual indicators. The visual display is illuminated in a first manner when the intensity of the lighting load is less than or equal to a predetermined eco-level intensity, and is illuminated in a second manner when the intensity of the lighting load is greater than the eco-level intensity. For example, the single visual indicator may be illuminated a first color, such as green, when the intensity of the lighting load is less than or equal to the eco-level intensity, and illuminated a second different color, such as red, when the intensity of the lighting load is greater than the eco-level intensity.05-27-2010
20100066254Light-Emitting Device - One embodiment of the invention proposes a light-emitting device comprising a radiation source for the emission of a radiation having at least a first wavelength, and an elongated, curved light-guiding body, into which the radiation emitted by the radiation source is coupled and which couples out light at an angle with respect to its longitudinal axis on account of the coupled-in radiation having the first wavelength.03-18-2010
20090256483Load Control Device Having a Visual Indication of an Energy Savings Mode - A load control system (e.g., a dimmer switch) operates in a normal mode of operation and an energy-saver mode and displays a visual indication when the system is operating in the energy-saver mode. The system comprises a controllably conductive device adapted to be coupled in series between a power source and a lighting load, a control circuit operatively coupled to the controllably conductive device for adjusting the intensity of the lighting load, and a visual indicator for providing the visual indication that the system is in the energy-saver mode of operation. The control circuit controls the intensity of the lighting load between a minimum intensity and a first maximum intensity when the system is in the normal mode of operation, and between the minimum intensity and a second maximum intensity less than the first maximum intensity when the system is in the energy-saver mode.10-15-2009
20100164386Application infrastructure for constructing illumination equipments with networking capability - An application infrastructure for constructing illumination equipments with a transmission function includes at least one lamp reporting device for reporting a lamp condition, at least one lamp detection and transmission module with a two-way communication function, at least one message transmission and receiving module coupled to a control system, and a main system. Through a built-in wireless network or a power line network function of the illumination equipments, data can be transmitted among nodes of a mixed routing by indoor lighting having a transmission function and outdoor road lamps having a transmission function, without the need of building a basic network structure. A special network structure connecting the nodes to form lines and planes constitutes the application platform for constructing the illumination equipments with a two-way transmission function.07-01-2010
20100244705Detecting Screen Breakage in Display Systems - Display systems, devices and techniques based on a screen and a mechanism that detects breakage on the screen and interrupts the operation of the screen when a screen breakage is detected.09-30-2010
20100026188AUTOMATIC LAMP DETECTION METHOD AND OPTIMAL OPERATION FOR FLUORESCENT LAMPS - There is provided a method that can detect the lamp type of fluorescent lamps and operate the lamp at the appropriate lamp power. The proposed method involves the classification of lamp characteristics of existing fluorescent lamps and the use of logic detection method such as a fuzzy logic detection and control technique to zoom into the right type of lamp. The information used in the lamp detection includes (1) lamp filament/electrode resistance, (2) lamp voltage and (3) lamp current. These three pieces of information can be used to select the appropriate fluorescent lamp type so that the control gear can operate the lamp at the right rated power. The importance of this invention can lead to a universal electronic ballast that can detect and operate all fluorescent lamps commonly available. It can also be used in a limited capacity to control a limited range of lamps.02-04-2010
20100060170Low leakage current LED drive apparatus with fault protection and diagnostics - An LED drive apparatus includes a microprocessor having a configurable input/output port, a FET current control transistor, and a diagnostic interface circuit. The diagnostic interface circuit includes a transistor having an input coupled to a junction between the FET and the LED, and an output coupled to an input of the FET. The microprocessor input/output port is coupled to the input of the FET for turning the LED ON and OFF and performing fault protection and diagnostics. At each desired transition of the LED, the microprocessor configures its input/output port as an output and momentarily sets the output state to achieve the desired transition, then re-configures the input/output port to determine the conduction state of the diagnostic interface circuit transistor, and determines an output fault status of the drive apparatus based on the determined conduction state.03-11-2010
20120306376Control Device for Providing A Visual Indication of Energy Savings and Usage Information - A dimmer switch for controlling the amount of power delivered to and thus the intensity of a lighting load comprises a visual display operable to provide a visual indication representative of energy savings and usage information. The dimmer switch comprises an intensity adjustment actuator, such as a slider knob or a rotary knob, which may be coupled to a potentiometer for adjusting the amount of power delivered to the lighting load. The potentiometer may comprise a dual potentiometer including a resistive element and a conductive element having a cut. The visual display may comprise a single visual indicator, which may be illuminated a first color, such as green, when the intensity of the lighting load is less than or equal to the eco-level intensity, and illuminated a second different color, such as red, when the intensity of the lighting load is greater than the eco-level intensity.12-06-2012
20120146515DRIVING DEVICE FOR LED MODULE - A driving device for a LED module is provided. The driving device for the LED module includes a voltage converting unit, a LED module voltage detecting unit, and a switching signal generation unit. The voltage converting unit produces a driving voltage to drive the LED module according to a switching signal. The LED module voltage detecting unit divides the driving voltage to produce a comparison voltage. The switching signal generation unit receives the comparison voltage by a fault detection pin and compares a reference voltage and the comparison voltage to enable or disable the switching signal. After the switching signal is disabled, the switching signal generation unit further pulls up a voltage level of the fault detection pin to a logic high level voltage, so as to produce a fault notification signal to let the fault detection pin also have a function for fault notification.06-14-2012
20120001552Failure Detection System and Method for LED Lighting Equipment - The present disclosure provides an LED lighting equipment failure detecting system for detecting if an LED lighting equipment is failure. The LED lighting equipment failure detecting system includes a current measuring unit, a parameter measuring unit, a storage unit and a control unit. The current measuring unit and the parameter measuring unit measure a present current value and a present operating parameter of at least one LED of the LED lighting equipment respectively. The control unit calculates a present condition parameter of the LED according to the present current value and the present operating parameter. The control unit calculates a condition parameter difference between the present condition parameter and the initial condition parameter stored in the storage unit. If the condition parameter difference is more than the abnormal condition threshold, the control unit determines that the LED of the LED lighting equipment is abnormal.01-05-2012
20120013256Gravity Controlled Lighting device - A lighting device having a housing incorporating an electrical circuit, a light source and a source of power with a gravity controller. The gravity controller regulates the power applied to the light source in response to the relationship between the position angle and the tilt angle of the lighting device with respect to the vertical. The lighting device has a storage orientation wherein the light source is non-energized and a transporting or use orientation wherein the light source is energized. A plurality of lighting devices are mounted on a storage bracket in a non-energized orientation. A plurality of lighting devices are mounted on a carrier having a changeable orientation, wherein the lighting devices are energized during transporting and non-energized during storage.01-19-2012
20100026189LAMP DRIVING CIRCUIT, AND DETECTION CIRCUIT FOR DETECTING AN END-OF-LIFE CONDITION - A lamp driving circuit (02-04-2010
20090146572POWER SENSING IN A FLASHLIGHT - A flashlight includes a battery and a circuit for operation to signal to a user that the battery voltage is at selected voltage or power level. There can be two switches each being for operating a light emitting source of the flashlight. The switches are linked 3-way switches and have momentary-on functionality. An enlarged head is located above the barrel and there is the intermediate portion between the head and the barrel. The intermediate portion receives part of the first switch. The second switch is located in part of the tail cap of the flashlight.06-11-2009
20120119655Occupancy Sensors Programmed To Determine Loss Of Lamp Life As Lamp Is Used - Programmable occupancy sensors that control the on/off operation of a fluorescent lamp automatically determine loss of lamp life as the lamp is used. The programmable occupancy sensors can provide lamp life status and can automatically alert a user when a lamp is nearing its end of life and should be replaced. The occupancy sensors are also programmable to automatically improve lamp life and energy savings by selecting an optimal time delay from among a number of selectable time delays at which to operate the sensor. The selection is based on an occupancy pattern sensed by the sensor over a given period of time. The optimal time delay, which prevents the lamp from turning off immediately after last sensing occupancy, extends lamp life by limiting the number of lamp off/on transitions, which shortens lamp life, in view of overall energy usage and lamp usage.05-17-2012
20120313530Parallel-Connected Ballast Circuits - A ballast circuit adapted for converting an input alternating current (AC) mains power received at input terminals to an output alternating current (AC) to supply a load, e.g. a gas discharge lamp. The output terminals of the ballast connect to the load in parallel with another ballast circuit. The ballast circuit is configured to supply the output AC current to the load in parallel with an AC current output of the other ballast circuit. A synchronization module attached at the output is adapted for synchronizing the output alternating current (AC) of the ballast circuit with the AC current output of the other ballast circuit. The synchronization module is configured to synchronize phase of the output alternating current with phase of the AC current output of the other ballast circuit.12-13-2012
20120169237HOLLOW CATHODE LAMP ELAPSED TIME RECORDING SYSTEM - A hollow cathode lamp is described with an end cap, an anode, and a cathode. A data storage device is part of the end cap and communicates data to and from a computing device. The data communicated with the computing device may include identification information and usage information corresponding to the hollow cathode lamp. Additionally, a method is described that includes activating a power supply to a hollow cathode lamp and communicating data with a memory device located in the hollow cathode lamp. The data communicated with the memory device includes usage information about an amount of time the hollow cathode lamp has been in use.07-05-2012
20100052542LED LAMP FAILURE ALERTING SYSTEM - Disclosed herein are embodiments of failure alerting systems for LED lamps and LED lamps having the same. An illustrative failure alerting system comprises a photodetector configured to detect an actual light output from the at least one LED, a regulator configured to receive a signal from the photodetector when the actual light output is below a target light output and to increase a current to the at least one LED to maintain the target light output, and a low light output indicator configured to receive a signal from the photodetector when the actual light output remains below the target light output and to produce a low light output signal. A thermal sensor can also be included and configured to sense an operating temperature of the LED and to control the regulator to increase the current and the target light output to ensure the operating temperature does not exceed the target temperature.03-04-2010
20120176039LED MATRIX OPEN/SHORT DETECTION APPARATUS AND METHOD - An apparatus to detect faulty connection of LED (open/short conditions) which may affect the function of LED display panel is presented. The apparatus basically controls the switches through control algorithm circuit to get the information of LED driver output pins voltage and compare them with two reference voltages to determine the open/short condition of individual LED.07-12-2012
20120319589Lamp Drive Device - A lamp drive device L is provided that can both light a lamp 12-20-2012
20110221347EXIT LIGHT AND EMERGENCY LIGHT WHICH HAVE FUNCTION TO INDICATE RESIDUAL CHARGE OF BATTERY - An exit light and an emergency light which have a function to indicate a residual charge of a storage battery are provided for users to efficiently check the residual charge of the battery by using a bar graph indicating unit formed on a front portion. The exit light and the emergency light each includes a power input unit which receives a utilized voltage input, decreases the voltage input and applies the voltage input to a rectifier circuit unit; the rectifier circuit which transforms AC power applied from the power input unit into DC power and applies the DC power to a power supply unit; the power supply unit which applies the DC power applied from the rectifier circuit to a light emitting unit or a charging circuit; the light emitting unit which emits light by using the DC power applied from the power supply unit; the charging circuit which supplies the DC power applied from the power supply unit to a storage battery and charges the storage battery; the storage battery which is charged with the DC power applied from the charging circuit; a bar graph indicating unit which indicates a residual charge of the storage battery; and a check switch which, in response to switching-on by a user for checking, cuts off the utilized power and discharges the charge of the storage battery through the bar graph indicating unit so that the residual charge of the storage battery is indicated on the bar graph indicating unit.09-15-2011
20120319588SYSTEMS AND METHOD FOR ADAPTIVE MONITORING AND OPERATING OF ELECTRONIC BALLASTS - An assembly, system and method for adaptively monitoring and operating a lamp fixture include a power input interface, a ballast, and a lamp interface. The ballast is coupled to the power input interface for receiving the received input power and creating lamp power between a first lamp terminal and a second lamp terminal. The ballast includes a transformer having a primary winding, a first lamp powering secondary winding, and a second lamp powering secondary winding. The transformer further includes a non-lamp powering secondary or third secondary winding for detecting a ballast operating parameter and transmitting a sensed ballast operating parameter value corresponding to the detected ballast operating parameter. A sensor detects an arc current circulating through a lamp received in the lamp interface and transmits a sensed arc current value corresponding to the detected arc current. One or more output interfaces provide the transmitted sensed arc current value and transmitted sensed ballast operating parameter value to an external system communicatively coupled.12-20-2012
20120248987Occupancy Sensors Programmed To Determine Loss Of Lamp Life As Lamp Is Used - Programmable occupancy sensors that control the on/off operation of a fluorescent lamp automatically determine loss of lamp life as the lamp is used. The programmable occupancy sensors can provide lamp life status and can automatically alert a user when a lamp is nearing its end of life and should be replaced. The occupancy sensors are also programmable to automatically improve lamp life and energy savings by selecting an optimal time delay from among a number of selectable time delays at which to operate the sensor. The selection is based on an occupancy pattern sensed by the sensor over a given period of time. The optimal time delay, which prevents the lamp from turning off immediately after last sensing occupancy, extends lamp life by limiting the number of lamp off/on transitions, which shortens lamp life, in view of overall energy usage and lamp usage.10-04-2012
20130099673CONFIGURABLE LIGHT TIMER AND A METHOD OF IMPLEMENTING A CONFIGURABLE LIGHT TIMER - A user interface of a configurable light timer is described. The user interface comprises an input portion for receiving timing characterization data, the input portion adapted to receive a portable memory device storing the timing characterization data; a control circuit coupled to detect the portable memory device inserted into the configurable light timer; and an internal memory; wherein the timing characterization data is automatically downloaded to the internal memory after the portable memory device is detected in the configurable light timer. A method of implementing a configurable light timer is also disclosed.04-25-2013
20110234104LOAD DETERMINATION DEVICE AND ILLUMINATION APPARATUS USING SAME - An illumination load determination device includes an illumination load; a voltage applying unit for applying a voltage to the illumination load; a connection unit for connecting the illumination load and the voltage applying unit; a detection unit for detecting at least one of a current flowing through the illumination load and a voltage across the illumination load when the voltage is applied to the illumination load from the voltage applying unit via the connection unit; and a determination unit for determining a type of the illumination load based on an output from the detection unit. The determination unit has a comparator for comparing a detection value detected by the detection unit to a predetermined threshold, and determines that the illumination load has a capacitance based on an output of the comparator. The voltage applying unit lights on the determined illumination load with a rated driving voltage.09-29-2011
20110254451APPARATUS AND METHOD FOR PREVENTING LAMP DAMAGE IN RAPID HEAT TREATMENT EQUIPMENT - Disclosed are an apparatus and method for preventing damage to the lamp of rapid heat treatment equipment. The most significant feature of the present invention is to provide an apparatus and method for preventing damage to a lamp in rapid heat treatment equipment, wherein the temperature of a quartz case comprising the lamp is sensed to identify an erratic increase in the temperature thereof so that problems with the lamp may be discovered early to take action. The apparatus and method according to the present invention allows the possibility of preventing damage or contamination of surrounding components due to lamp explosion; decisions regarding lamp replacement are also facilitated so that productivity can be enhanced. In addition, uniform lamp output may be ensured so that product quality is enhanced.10-20-2011
20130200804OPERATING UNIT - An operating element for a medical light includes an operating element for setting the size of a light field generated by the light, a screen for displaying the currently set size of the light field and an electronic interface for outputting control signals for the size of the light field to a control device of the light. The operating unit is configured to display a representation of at least one light body of the light, including a light cone emanating from the light body, on the screen and to change the shape of the light cone in the representation correspondingly on an adjustment of the size of the light field by means of the operating element.08-08-2013
20130207549DEVICE FOR OUTPUTTING TEMPERATURE INFORMATION - An operating device (08-15-2013

Patent applications in class WITH SIGNAL, INDICATOR, OR ALARM

Patent applications in all subclasses WITH SIGNAL, INDICATOR, OR ALARM