Abstract: A drum assembly includes a drum, a stimulus processor assembly and a light pattern display generator. The drum includes a drum shell that at least partially defines a drum interior. The stimulus processor assembly receives a stimulus, generates an input signal, and converts the input signal to an output signal. The light pattern display generator receives the output signal from the stimulus processor assembly. The light pattern display generator generates a light pattern display in response to the output signal. Additionally, the light pattern display generator projects the light pattern display at least partially within the drum interior. The light pattern display generator can include one or more of an animation laser, a hologram projector and a lumin disk. The stimulus can be generated by the drum or by a source remote from the drum.

Abstract: An LED lighting system including a first group of LEDs, a second group of LEDs, and a controller. The first group of LEDs and the second group of LEDs are configured to be independently driven by a first LED drive signal and a second LED drive signal, respectively. The controller is configured receive a dimming signal from a dimmer having a preheat function. The controller is also configured to compensate the dimming signal for the preheat function of the dimmer to generate a compensated dimming signal, generate the first LED drive signal based on the compensated dimming, and generate the second LED drive signal based on the compensated dimming signal. The first LED drive signal is then transmitted the first group of LEDs and the second LED drive signal is transmitted to the second group of LEDs.

Abstract: The present invention provides an electric axial-flow fan having turbine type waterproof enclosure, which is rainproof and installed at the top portion of sealed heat dissipation housing of a high power lamp, so when the electric axial-flow fan is operated, the airflow passes through the top portion of lamp housing, which is relatively hotter, of the sealed heat dissipation housing and is concentrated towards the center, then leaded to upwardly enter an axial airflow inlet port formed at the bottom of the turbine type waterproof enclosure, thereby being exhausted to the surroundings through radially-arranged exhaust blades, thus when the present invention being applied in a high power lamp, an air cooling effect by external airflow can be provided to the top portion, which is relatively hotter, of the lamp housing, without influencing the waterproof sealing effect.

Abstract: An LED lamp has two preheating current control units respectively connected to a first electrode terminal and a second electrode terminal of the LED lamp, two lamp-side rectification circuits, and an LED light string. Each preheating current control unit has a ballast-side rectification circuit connected to one of the first and second electrode terminals and a load-varying circuit having a resistive load and a control circuit. The resistive load is serially connected to a DC output terminal of the ballast-side rectification circuit through the control circuit. The control circuit adjusts a resistance of the resistive load. Two input terminals of each lamp-side rectification circuit are respectively connected to one of the electrodes of each of the first electrode terminal and the second electrode terminal. The LED light string has two ends respectively connected to the two output terminals of each lamp-side rectification circuit, and has multiple series-connected LED elements.

Abstract: A ballast including a driver circuit, a filament heating circuit, a current detector circuit, and a control circuit is provided. The driver circuit generates an oscillating current signal. The filament heating circuit heats filaments of a lamp connected to the ballast and includes a heating transformer with primary and secondary windings and a switching circuit. The primary winding is connected to the driver circuit and the switching circuit. The secondary winding is connected to the primary winding and may be connected to the lamp. The duty cycle of the switching circuit controls current provided from the driver circuit to the primary winding to heat the lamp. The current detector circuit is connected to the switching circuit and detects a parameter of the current in the primary winding, which indicates the number of lamp filaments connected to the ballast. The control circuit controls the driver circuit based on the detected parameter.

Abstract: An outdoor LED lamp assembly includes a light transmissive cover disposed over at least one LED chip of the lamp assembly. A heating element is provided for providing heat to the cover. A sensor may be used to detect cover conditions, such as the accumulation of condensation, ice or snow on the cover, so as to provide electricity to the heating element and heat the cover in order to remove the condensation, ice or snow on the cover.

Abstract: A lighting system having a controller, a plurality of lights, and a bidirectional bus interconnecting the controller with the lights. The controller controls of the status of the various lights including the on/off state and intensity of the light by transmitting not only commands along the bidirectional bus, but also the address of the individual lights along the bus to the lights. This address is decoded by a circuit associated with each light to permit the lights to be individually controlled if desired.

Abstract: An LED lighting system including a first group of LEDs, a second group of LEDs, and a controller. The first group of LEDs and the second group of LEDs are configured to be independently driven by a first LED drive signal and a second LED drive signal, respectively. The controller is configured receive a dimming signal from a dimmer having a preheat function. The controller is also configured to compensate the dimming signal for the preheat function of the dimmer to generate a compensated dimming signal, generate the first LED drive signal based on the compensated dimming, and generate the second LED drive signal based on the compensated dimming signal. The first LED drive signal is then transmitted the first group of LEDs and the second LED drive signal is transmitted to the second group of LEDs.

Abstract: A fluorescent lamp dimmer is disclosed herein, which may dimmably power one or more fluorescent lamps. The fluorescent lamp dimmer includes a fluorescent lamp power output, at least one fluorescent lamp heater output, a dimmable current source operable to yield a controllable constant current, a current-fed inverter operable to power the fluorescent lamp output from the controllable constant current, and a heater circuit operable to power the at least one fluorescent lamp heater output. The heater circuit provides power at a substantially constant level while the controllable constant current is variable.

Abstract: A device to control luminosity of a lamp supported by a rapid start ballast, the device including a first terminal and a second terminal configured to be connected in series with the rapid start ballast and the lamp, a current divisor array, in communication with the first terminal and the second terminal, with a plurality of inductors and a commutable element, the commutable element selecting between two current paths employing the plurality of inductors, the commutable element when in a first state selecting a first one of the current paths to provide a higher luminosity setting and when a second state selecting a second one of the current paths to provide a lower luminosity setting, and a transformer in communication with the first terminal and the second terminal configured to provide heating to an electrode of the lamp.

Abstract: An LED light emitting device includes an LED light emitting component comprising a visible LED die emitting visible light and an infrared LED die emitting infrared light, a power source driver for providing electric energy for the LED light emitting component, and a temperature sensor for sensing a surface temperature of an outer surface of the LED light emitting component. When a value of the surface temperature is smaller than zero degree Celsius, the temperature sensor outputs a control signal to the power source driver to control the power source driver to supply an electric current to the infrared LED die, whereby the infrared LED die radiates infrared light to melt ice on the outer surface of the LED light emitting component.

Abstract: A monolithic light-emitting device and driving method therefore includes a plurality of light-emitting diodes, array-arranged monolithically on a single substrate. The light-emitting diodes include a pn junction-containing semiconductor material and a phosphor-containing layer passing light emitted from the semiconductor material, absorbing part, or whole of the light for conversion into light having a different wavelength. The array is constituted of a light-emitting diode group consisting of m (m?2) pieces of the light-emitting diode, the light emitting diode group being constituted of N types (N?2, providing N?m) of light-emitting diodes, each having either one of preset N types of light-emitting spectrum patterns. An average light-emitting spectrum from the whole array can be changed by regulating a power supplied to the light-emitting diodes for each light-emitting diode group sorted according to the type of the light-emitting spectrum pattern.

Abstract: LED modules 1R, 1G, 1B for respectively emitting red, green and blue colors of light, illumination optical systems 2R, 2G and 2B for guiding light from the LED modules, and a liquid crystal panel 7 for modulating the light from the LED modules guided by the illumination optical systems on the basis of an image signal are placed. The LED modules are provided with respective cooling units connected to the backside thereof through spreaders 11R, 11G and 11B as thermal conductive members. Only the cooling device for the red LED module 1R is formed by using a red Peltier device 12 as a thermoelectric element capable of controlling heating and absorbing heat. Efficient temperature control by appropriately using a Peltier device for cooling the plurality of solid light sources that emit colors of light different from each other becomes possible, and an increase in the size of the cooling system and power losses can be suppressed.

Abstract: An inductively powered gas discharge lamp including both a power coil and a heating coils associated with each filament. The heating coils enable the filaments to be preheated before the starting voltage is applied through the power coils. The inductive power coils and the inductive heater coils are contained within the lamp envelope, allowing the lamp to be entirely sealed. A method of dimming the lamp also is disclosed. The lamp is dimmed by both decreasing the power applied to the power coils and increasing the power applied to the heating coils so as to prevent the arc from extinguishing under lower voltage conditions.

Abstract: An infant nursing bottle includes a partially sealable check valve between the top of the bottle and the feeding nipple, whereby equalizing air may enter the bottle after the suction phase while the baby pauses.

Abstract: A fluorescent lighting control system providing automatic and/or manual adjustability of the arc current(s) in one or more fluorescent lamps to permit operation of the lamps at less than rated wattage, and its concomitant luminous flux, in interior building spaces where full light output of the installed lamp(s) is rarely required particularly when daylight components are present. The goal(s) of this invention is to provide means to reduce wasteful electrical consumption in buildings and thereby reduce operating costs and gain the attendant benefit of dampening the increasing need for more electrical generation with its concomitant environmental pollution problem.

Abstract: A display apparatus is provided which is responsive to an audio signal to vary the illumination of a light source. The light source has a variable resistance having an initial value when the light source is cold and a larger value when the light source is warm. The display apparatus includes a circuit having a pulse generator which periodically passes pulses of current through the light source to warm the light source prior to illumination of the light source by the modulator sufficient to substantially increase the response time of the light source upon receipt of the audio signal.