Patent application number | Description | Published |
20090108769 | LIGHTING DEVICE AND ILLUMINATION APPARATUS - The present invention provides a lighting device capable of controlling finely modulated light control without stopping other processing regardless of an operation clock. The light modulation signal generating portion calculates a cycle of a PWM signal based on the lighting state of lamp, which is detected by state detecting portion and a predetermined operation clock. A PWM signal of the cycle calculated by the state detecting portion is generated by the light modulation signal generating portion capable of generating the PWM signal corresponding to the cycle of a non-integral number of times of the operation clock, wherein the cycle of the PWM signal can be continuously and finely varied without stopping other processing regardless of operation clocks, and fine modulated light control is enabled. | 04-30-2009 |
20090134813 | DISCHARGE LAMP LIGHTING DEVICE - The inverter circuit is feedback-controlled by a substantial current flowing into the discharge lamp, which is detected by the current detecting means. A high starting voltage is supplied to the discharge lamp with the operation frequency lowered by the control circuit after the end of a preheating action. The inverter circuit is controlled so that the current of the discharge lamp becomes a desired current value as soon as the current detecting means detects the current substantially flowing into the discharge lamp. The discharge lamp can be prevented from being instantaneously brightly lit without separately providing any structure for detecting lighting of the discharge lamp. | 05-28-2009 |
20120056560 | DC POWER SOURCE UNIT AND LED LAMP SYSTEM - A DC power source unit | 03-08-2012 |
20130285563 | Power Supply Device, Luminaire, Control Method for the Power Supply Device, and Control Method for the Luminaire - According to one embodiment, a control circuit detects power supply voltages converted by switching elements for conversion and subjects the switching elements for conversion to feedback control. The control circuit subjects all of a switching element for power factor improvement and a plurality of the switching elements for conversion to switching control at different switching frequencies. | 10-31-2013 |
20140277591 | Electrical Equipment and Communication Apparatus - A lighting apparatus includes a communication unit and a control unit. The communication unit performs master-slave type communication with the communication adaptor, outputs, as a master, a transmission request of a control signal to the communication adaptor which temporarily stores the control signal for controlling the lighting apparatus, transmitted from equipment connected to the network, and receives the control signal transmitted from the communication adaptor in response to the transmission request. The control unit electrically controls the lighting apparatus on the basis of the control signal received by the communication unit | 09-18-2014 |
20150061519 | Control Apparatus, Control System, and Control Method - According to one embodiment, there is provided a control apparatus including a receiving section, a specifying section, and control sections. The receiving section receives a control signal. The specifying section specifies a control system corresponding to the control signal received by the receiving section. The control sections derive, according to the control system specified by the specifying section, control designated by the control signal received by the receiving section, and apply the derived control to a lighting device. | 03-05-2015 |
Patent application number | Description | Published |
20110316494 | SWITCHING POWER SUPPLY DEVICE, SWITCHING POWER SUPPLY CIRCUIT, AND ELECTRICAL EQUIPMENT - According to an embodiment of the invention, there is provided a switching power supply device including an integrated body and a plurality of external terminals. In the integrated body, a first switching element, a constant current element, and a diode are connected in series. The plurality of external terminals include a first external terminal connected to a main terminal of an element disposed on one end side of the integrated body and a second external terminal connected to a main terminal of an element disposed on another end side of the integrated body. | 12-29-2011 |
20120069616 | SWITCHING POWER SUPPLY DEVICE, AND ADJUSTABLE POWER SUPPLY SYSTEM INCLUDING THE SAME - According to one embodiment of the invention, there is provided a switching power supply device including a rectifying circuit and a switching operation conversion circuit. The rectifying circuit receives a phase-controlled alternating voltage to rectify to a direct voltage. The switching operation conversion circuit starts up by being applied with the direct voltage, and includes a normally on type switching element and an off driving circuit. The normally on type switching element passes an input current, and the off driving circuit turns off the switching element when the input current reaches a prescribed value. The switching operation conversion circuit converts the direct voltage to an output voltage different from the direct voltage by repeating a switching operation of turning on and off the switching element. | 03-22-2012 |
20120119651 | LED LIGHTING DEVICE AND LED LIGHTING EQUIPMENT - In one embodiment, a lighting device includes an LED lighting circuit and an LED load constituted by a plurality of parallel circuits formed by connecting a plurality of LED elements in parallel, and a series circuit formed by connecting the parallel circuits. The series circuit is connected with an output terminal of the lighting device. In case one LED element becomes open fault mode in one of the parallel circuit, the other LED elements continue lighting. In case two or more LED elements become the open fault mode, the other LED elements also become the open fault mode, and all the LED elements turn off. | 05-17-2012 |
20120153841 | ILLUMINATING DEVICE AND ILLUMINATING METHOD - An illuminating device includes a plurality of kinds of LEDs that emit light having different color temperatures; a plurality of LED lighting circuits that independently light the LEDs for each color temperature of emitted light; and a control unit that selects a first control changing illuminance of the LEDs as a whole by controlling the lighting of the LEDs and a second control changing the colors of light of the LEDs as a whole by controlling the lighting of the LEDs, and corrects an illuminance difference generated before and after the second control. | 06-21-2012 |
20120293086 | Light-Emitting Module and Luminaire - A light-emitting module in the embodiment includes a plurality of light-emitting elements, a power circuit, a power terminal, a feeding power terminal, and a substrate. The power circuit is configured to supply electric power to the light-emitting elements and performs lighting control. The power terminal is connected to the power circuit. The feeding power terminal is electrically connected to both ends of the power terminal. The substrate includes the plurality of light-emitting elements, the power circuit, the power terminal, and the feeding power terminal mounted thereon. | 11-22-2012 |
20130063034 | LIGHTING SYSTEM AND CONTROL METHOD THEREOF - A lighting system according to embodiments includes a first light source, a second light source, a first lighting circuit, a second lighting circuit, a first optical sensor; and a control circuit. The first light source is configured to emit light a half-value width of which is 100 nm or more. The second light source is configured to emit light the half-value width of which is less than 100 nm. The first lighting circuit is configured to light the first light source. The second lighting circuit is configured to light the second light source. The control circuit is configured to perform a lighting control of the first lighting circuit on the basis of a detection value of the first sensor, and perform a lighting control of the second lighting circuit on the basis of a value which is predetermined when operating the first sensor. | 03-14-2013 |
20130063045 | LIGHTING SYSTEM AND CONTROL METHOD THEREOF - A lighting system according to embodiments includes a first light source, a second light source, a first lighting circuit, a second lighting circuit, a signal input unit, and a control circuit. The first light source has a predetermined color temperature. The second light source has a color temperature which is different from that of the first light source. The first lighting circuit lights the first light source. The second lighting circuit lights the second light source. The signal input unit receives an external signal. The control circuit includes a first light source lighting control cycle which performs a predetermined lighting control of the first light source, and a second light source lighting control cycle which performs a predetermined lighting control of the second light source, controls the first and second lighting circuits so as to start the lighting control. | 03-14-2013 |
20130069548 | Switching Power Supply, Luminaire, and Control Method for the Luminaire - A switching power supply includes a switching element, a constant current element, a rectifying element, a first inductor, a second inductor, and a control circuit. If the switching element is on, the switching element supplies a power supply voltage to the first inductor and feeds an electric current. The constant current element turns off the switching element if the electric current of the switching element exceeds a predetermined upper limit. The rectifying element feeds the electric current of the first inductor if the switching element is turned off. The second inductor supplies the induced potential to a control terminal of the switching element. The control circuit supplies a pulse-like potential to a control terminal of the constant current element and outputs if an average of the potential is lower than a lower limit. | 03-21-2013 |
20130082623 | LIGHTING SYSTEM AND CONTROL METHOD THEREOF - A lighting system according to an embodiment includes a light source unit and a control circuit. The light source unit includes first, second, and third light sources. The control circuit controls an optical output of the light source unit with a predetermined color temperature by controlling the respective optical outputs of the first, second, and third light sources, and sets the optical output of the light source unit when any one of the first, second, and third light sources becomes the minimum optical output to the minimum optical output at the time of reducing the optical output of the light source unit in a state where the optical output of the light source unit maintains the predetermined color temperature. | 04-04-2013 |
20130334969 | LIGHTING SYSTEM, CONTROL METHOD THEREFOR AND LIGHTING CONTROL DEVICE - According to one embodiment, a lighting system includes a luminaire and a lighting control device. The lighting control device includes an operation section, a target-value managing section, a transmitting section, and a display section and controls the luminaire. The target-value managing section stores an operation state of the luminaire and, when the operation section is operated, calculates an operation target value on the basis of the stored operation state of the luminaire and updates the operation state to the operation target value serving as an operation state of the luminaire after the operation. The transmitting section transmits the operation target value as a radio signal. The display section performs display based on the operation target value. | 12-19-2013 |
20140028209 | INTERFACE CIRCUIT AND INTERFACE METHOD - Disclosed is an interface circuit including a rectifier circuit, a detection circuit, a first circuit, and a second circuit. The rectifier circuit rectifies an AC voltage input between a pair of input terminals. The detection circuit detects the AC voltage and outputs the result as a detection voltage. The first circuit is controlled to be turned on or off on the basis of an input first control signal, to cause a first current to flow between the input terminals in an on state and to cut off the first current in an off state. The second circuit is controlled to be turned on or off on the basis of an input second control signal, to allow a second current greater than the first current to flow between the input terminals in an on state and to cut off the second current in an off state. | 01-30-2014 |