74results about "Electric light circuit arrangement" patented technology

Methods and apparatus for executing a lighting program to control a plurality of light emitting diodes (LEDs) in response to at least one characteristic of an audio input. In one embodiment, the audio input is digitally processed to determine the at least one characteristic. In other embodiments, control signals for the LEDs are generated in response to a timer and/or input from a user interface, as well as in response to the at least one characteristic of the audio input. In another embodiment, the control signals for the LEDs are generated by a same computer that processes the audio input to transmit signals to speakers to audibly play the audio input. In a further embodiment, a GUI is provided to assist in authoring the lighting program. In another embodiment, the audio signal is processed before being played back. In a further embodiment, the lighting program anticipates changes in the audio input.

An LED lighting device of AC power-driven type having a comparatively simple constitution and a high power efficiency. The device compares a signal voltage (rectified voltage) obtained by rectifying an AC source with a predetermined reference voltage and controls ON/OFF of a driving current to each LED of an LED array in response to a comparison result. In this constitution, a large voltage of AC source enables lighting of more number of LEDs, while a small voltage thereof enables lighting of less number of LEDs, thus enhancing power efficiency of the LED lighting device.

A lighting device comprising first, second and third groups of solid state light emitters, the first group emitting light having a dominant wavelength of 430 to 490 nm, the second group at 525 to 575 (in some devices 540 to 575 nm), the third group at 610 to 640 nm. In some devices, wavelength of light from emitters in first and second groups, and light from second and third groups, differs by at least 70 nm. Some devices emit light having CRI Ra of at least 70 when first, second and third groups of emitters are illuminated. Also, a lighting arrangement comprising first, second and third groups as above, in addition to a fourth emitter emitting light of dominant wavelength outside the ranges for the first, second and third groups, and not more than 10 nm different from a dominant wavelength of a color on an item to be illuminated.

Solar-powered lighting devices that may be portable and/or collapsible are described. The devices may include a housing including a first wall, a second wall, and one or more side walls between the first wall and the second wall, at least one solar panel to generate solar energy, and a rechargeable battery to store the solar energy generated. The devices may include a plurality of operating modes for controlling lights within the housing, and a microprocessor for controlling the operating modes.

A power and control module for a Power over Ethernet (PoE) light emitting diode (LED) lighting system includes an input channel for receiving PoE input power from a PoE switch, an output channel for providing PoE output power to a plurality of LED light fixtures and a power transfer unit coupled between the input and output channel for providing the PoE input power and/or a secondary input power to the output channel as the PoE output power. A secondary power input unit selectively provides secondary power to the power transfer unit. A processor is controls the power transfer unit to adjust an amount of PoE input power and secondary input power to obtain the PoE output power. Secondary input power can be an emergency power source during line power outages. Secondary input power could be a renewable energy power source used preferentially to the PoE input power when available.

A dimming signal generation device outputs a square wave voltage signal having an on-duty corresponding to a dimming level to a dimming signal line from a time point when a predetermined time period has elapsed after power-up. In the dimming signal generation device, a specific voltage is outputted to the dimming signal line for the predetermined time period after the power-up.

A switching constant-current power device can stabilize current flowing to a load (e.g. a display device comprising an LED, or the like) even when the current is repeatedly interrupted. A voltage current detector is connected to the output side of a power converter and creates a voltage signal in accordance with the output voltage thereof; and a feedback circuit is provided between a controller for driving the power converter and a current detector, which generates a first feedback signal in accordance with the load current. The feedback circuit comprises a signal holding unit, which outputs a second feedback signal that was created by consulting the voltage signal at a given time, the feedback circuit supplying the first feedback signal, output by the current detector, to the controller when load current is flowing, and supplying the second feedback signal, output by the signal holding unit, to the controller when load current is not flowing.

The invention discloses an intelligent management system for street lamps. The intelligent management system for the street lamps comprises a street lamp terminal and a central server, wherein the street lamp terminal comprises a street lamp terminal forwarding module and at least two street lamp terminal controllers, and the central server comprises an intelligent street lamp management module, a GIS space fitting module and a display module. After each street lamp terminal controller collects street lamp fault information of the corresponding joint point, longitude and latitude information and the street lamp fault information of the corresponding joint point are packed to form fault information, and the fault information is sent to the intelligent street lamp management module; the intelligent street lamp management module analyzes the fault information to obtain the longitude and latitude information and the street lamp fault information of the corresponding faulted street lamp joint point, sends the longitude and latitude information to the GIS space fitting module, and sends the street lamp fault information to the display module to carry out display on the street lamp fault information; the GIS space fitting module carries out space fitting on the longitude and latitude information and geographic information to obtain geographical location information, and sends the geographical location information to the display module to carry out display. The intelligent management system for the street lamps has the advantage that a worker can conveniently, rapidly and accurately find out a faulted street lamp according to the geographical location information of the faulted street lamp.

A liquid crystal display apparatus is provided which has two or more options in selection of the range of viewing angles. A surface light source device according to the invention has a main surface from which light is emitted, and includes a plurality of light guide plates corresponding to a plurality of regions obtained by dividing the main surface in parallel; an optical film provided on the exit surface side of the light guide plates; and a light driver that controls the turning on and off of the plurality of light guide plates. The optical film includes a light-guide slit film which transmits light that is emitted from the light guide plates and that is within a certain range of angles.

A liquid crystal panel manufacturing device and liquid crystal panel manufacturing method, capable of manufacturing liquid crystal panel with excellent performance and high yield by inhibiting ultraviolet irradiation from a wavelength range possibly causing influence on the liquid crystal panel performance. The provided liquid crystal panel manufacturing device comprises a processing chamber (50)for processing to-be-processed substrate (10) sealed with liquid crystal (17) containing light responsiveness material (18); a plurality of lamps (52) disposed in the processing chamber (50), irradiating ultraviolet towards the to-be-processed substrate (10) to lead the light responsiveness material (18) for reaction, in order to form orientation part (21, 22) inside the to-be-processed substrate(10); and filters (53) aligning to the lamps (52), and at least inhibiting the ultraviolet transmission of which wavelength ranges from 320 to 360 nm.

A clip light, for detachably mounting the clip light to a visor of a cap, includes a light arrangement and a detachable clip member. The light arrangement includes a light housing and a light device supported within the light housing, wherein the detachable clip member is detachably coupling with the light housing, wherein the detachable clip member is adapted to be detached for replacing to another type of clip member for different purposes. The detachable clip member is rotatably coupling with the light housing, such that a projecting angle of the light from the light source is adapted to be adjusted via a rotation manner.

The invention relates to the electronic field, and discloses dimming method and circuit and a controllable silicon dimming circuit with the circuit. The method comprises the steps that a dimming signal is generated according to a current direct current input voltage signal; according to the dimming signal, the voltage average value signal of the dimming signal is generated; the fact that the dimming signal is currently in a positive half cycle or a negative half cycle is determined; when the dimming signal is currently in the positive half cycle, the voltage average value signal is compared with an output current feedback signal which represents the magnitude of the current output current, and a first comparison signal is output; a drive signal is output according to the first comparison signal; when the dimming signal is currently in the negative half cycle, the voltage average value signal is compared with an output current feedback signal which represents the magnitude of the current output current, and a second comparison signal is output; and a drive signal is output according to the second comparison signal. The application of the technical scheme is conductive to eliminating stroboflash.

The invention discloses a mobile terminal. The mobile terminal comprises a battery and a battery electric quantity display system, wherein the battery electric quantity display system comprises a power supply management chip, a control chip, an LED drive chip and an LED lamp array arranged in a shell of the mobile terminal; the shell includes a transparent region arranged above the LED lamp array; the power supply management chip is used for detecting residual electric quantity of the battery; and the control chip is used for controlling the LED drive chip to drive the LED lamp array to display a figure changed based on the residual electric quantity. The invention provides the mobile terminal for indirectly reflecting a change of electric quantity of a battery by displaying a change of a figure by the LED lamp array. The change of the figure is the change of one or more of figure color, shape and brightness, so that the displaying of electric quantity of the battery is more novel and interesting.

A system for sensing luminaire properties and controlling luminaire performance independently of the location, distance or orientation of the sensors relative to the source luminaire device that is being sensed. Thus, the installer and the maintenance crew are freed from issues and activities associated with sensor installation.

The invention discloses a light-emitting diode (LED) illuminating street lamp capable of being controlled remotely and wirelessly in groups and belongs to the technical field of wireless communication. The LED illuminating street lamp comprises a sensor node, a microprocessor, intermediate processing nodes, a control terminal and a remote user control unit, wherein the sensor node is arranged in a street lamp shade; the microprocessor is arranged in a lamp post; a street lamp controller and a wireless communication module are arranged in the microprocessor; and the intermediate processing nodes are arranged among a plurality of street lamp posts. When the LED illuminating street lamp is used, the sensor node sends the acquired information to the microprocessor; the microprocessor transmits a signal to the intermediate processing nodes; the intermediate processing nodes summarize all the information and send the information to the control terminal and the remote user control unit; the control terminal and the remote user control unit process the information and feed the processed information back to the intermediate processing nodes; and the intermediate processing nodes send execution commands to the street lamp controller. The LED illuminating street lamp not only can be used for illuminating, but also can effectively save energy and has lower development cost and good application prospect.

The invention relates to a control method for cross-links wireless relaying street lamp passing, which includes: perform street lamps grouping, mark serial numbers on each street lamp set in each group according to the sequence of both sides cross-wise; a control center sends out control order to a signal receiving module on the street lamp; the signal receiving module stores the control order in the storage module through a processing module, after receiving the control order and at the same time, the processing module starts to inquire the serial number of the street lamp set, extract corresponding order from the storage module according to required serial number and deliver the order to an execution module; write the street lamp set serial number on corresponding position in the control order and re-store the revised control order into the storage module; after certain delay time, the processing module extracts the revised control order from the storage module and sends out the control order, which will be received by the receiving module on the street lamp behind. The invention has the advantages of less investment, convenient and flexible operation and good reliability.

An embodiment of the present invention includes an LED driving device that causes a plurality of LEDs to emit light, wherein the device includes: an LED driving circuit configured to drive the LEDs so that at least one of the plurality of LEDs emits light as a first. LED and an LED around the first LED is prevented from emitting light as a second LED; a photodetection unit configured to detect light emission of the first LED through the second LED and detect a light emission quantity of the first LED; and a controller configured to adjust a light emission quantity of the first LED based on the light emission quantity of the light emission of the first LED detected by the photodetection unit.

The invention relates to a semiconductor lighting driving circuit which is compatible with a thyristor dimmer and a voltage input type dimmer. The semiconductor lighting driving circuit comprises a rectification filtering circuit, a power factor correction (PFC) circuit, a control circuit and a conversion circuit, wherein the rectification filtering circuit is used for converting an alternating current which comes from an alternating current power supply into a direct current; the PFC circuit is used for performing voltage reduction on the direct current; the control circuit is used for generating a pulse width modulation (PWM) control signal according to the direct current which is subjected to voltage reduction or an output voltage of the voltage input type dimmer; and the conversion circuit is used for supplying electric energy to a semiconductor lighting device according to the PWM control signal. The semiconductor lighting driving circuit is compatible with the thyristor dimmer and the voltage input type dimmer, can steadily operate in various kinds of dimming modes, and is high in generality. The semiconductor lighting driving circuit can independently operate, and the semiconductor lighting driving circuit and other circuit modules can conveniently form a product with high cost performance. Moreover, with the PFC circuit, the electromagnetic interference of the circuit can be remarkably reduced, so that the circuit operates more steadily and more reliably.

A light fixture wireless motion detector conversion kit that includes an electrical box cover plate that houses a wireless receiver unit capable of receiving a signal from a wireless motion detector. Formed on the front surface of the plate is a center cavity upon which a standard light fixture bracket is attached. During assembly, the cover plate is securely attached to a vertical support surface while the base of a light fixture is attached to the bracket. The wireless receiver unit is electrically connected between an external 120 volt AC electrical circuit and the light fixture's wires. In the preferred embodiment, the wireless receiver unit includes an optional frequently switch, a mode switch, that allows the user to select different frequencies that matches the frequency used by the motion detector.

The invention relates to a novel LED (light emitting diode) lighting driving power supply, wherein the input end of the driving power supply is connected with the output end of the driving power supply via a feedback circuit; the feedback circuit comprises a voltage control loop, a current control loop and a PWM (pulse width modulation) regulating circuit; the feedback signals of the voltage control loop and the current control loop are input to the PWM regulating circuit by an optical coupler; the PWM regulating circuit is connected with a transformer circuit so as to control the output voltage; and in the current control loop, a triode is adopted to be matched with a sampling resistor so as to regulate the input duty ratio of the PWM chip, thereby regulating the output current and keeping constant current. The driving power supply combines the triode, a constant voltage source and the optical coupler to control a load end and the PWM controller of the whole circuit so as to output the constant current and constant voltage, thereby driving the LED. The novel LED lighting driving power supply needs few required apparatuses and is high in reliability.

The invention discloses a light-emitting lamp fitting based on hybrid power supply as well as a hybrid power supply device and method thereof. The light-emitting lamp fitting comprises an LED (light-emitting diode), a solar module, an auxiliary electric power module, an electric potential detection circuit, a first switch unit and a second switch unit; when the electric potential detection circuit in the light-emitting lamp fitting detects that voltage generated by the solar module is greater than a specific value, the solar module is connected to an LED module so as to supply solar electric power to the LED module; and when the electric potential detection circuit detects that the voltage of solar electric power is lower than the specific value, the auxiliary electric power module is connected to the LED module, and the auxiliary electric power module supplies power to the LED module. According to the invention, through providing hybrid electric power sources, the electric energy can be stably supplied for LED illumination.

The invention discloses an earthquake-alarm wall switch. A 220V-illuminating lamp switch function and an emergency lamp illuminating function are increased on an earthquake alarm; earthquake alarm is given only if three quakes are reached within 8 seconds during earthquake detection so as to prevent false alarm; when the earthquake alarm is given at night, an indoor 220V illuminating lamp is switched on so as to provide illumination for people to escape in an earthquake; in daily life, after the 220V illuminating lamp is switched on and power failure happens, an LED (Light-Emitting Diode) illuminating lamp is automatically switched on for providing emergency illumination to the people.

The invention discloses a light emitting diode (LED) drive circuit. The LED drive circuit comprises a transformer, a metal oxide semiconductor (MOS) tube, a power adjusting resistor, a direct current buffer circuit, a rectifying circuit and a voltage control circuit. When the voltage of a control end of the voltage control circuit is higher than of the threshold voltage of the MOS tube, breakover of the MOS tube is achieved, a current input by an external power supply passes by a first winding of the transformer, the MOS tube and the power adjusting resistor sequentially, and the rectifying circuit is powered on. When the voltage of the power adjusting resistor is similar to the voltage of a standard end of the voltage control circuit, the MOS tube is cut off, a second winding of the transformer charges a capacitor of the MOS tube through the direct buffer circuit, the rectifying circuit is powered on, and the first winding of the transformer supplies power to LED load through the rectifying circuit. When the capacitor voltage of the MOS tube is higher than the threshold voltage, breakover of the MOS is achieved again. The LED drive circuit can replace a power source to manage an integrated circuit (IC), simplifies the LED drive circuit and reduces the cost.