Abstract: 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.

Abstract: 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.

Abstract: 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.

Abstract: 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.

Abstract: 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.

Abstract: A DC power source unit 37 is provided which boosts source voltage from a power source portion 36. A lighting circuit 38 is provided which supplies DC voltage to loads, the DC voltage being obtained by stepping down output current of the DC power source circuit 37. A control circuit 39 is provided which controls the lighting circuit 38 in accordance with at least either voltage or current of LEDs 25 and controls the DC power source unit 37 so that a ratio of output voltage to voltage of the LEDs 25 becomes a preset fixed ratio.

Abstract: 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.

Abstract: 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.

Abstract: In an operation device, a control unit is configured to be capable of receiving at least two operation patterns. A control unit keeps a switch off for a period of length corresponding to an operation pattern detected by a detecting unit. In a luminaire, when the length of a period in which a power level detected by a detecting unit falls is included in a first time range, a control unit stops power supply to a lighting unit while maintaining power supply to a communication unit.

Abstract: 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.

Abstract: A detection circuit according to embodiments includes a first circuit and a second circuit. The first circuit is turned OFF when an AC voltage to be input to a pair of input terminals is smaller than a prescribed value, and is turned ON when the AC voltage is equal to or higher than the prescribed value. The second circuit detects whether the AC voltage is an AC voltage leading-edge controlled by a dimmer, an AC voltage trailing-edge controlled by the dimmer, or an AC voltage having a continuous phase on the basis of at least one of the value of voltage and a gradient of the first circuit when the first circuit is turned ON while the first circuit is in the OFF state.

Abstract: 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.

Abstract: A light source lighting device includes a first light source 1, a second light source 2 having a color temperature lower than a color temperature of the first light source, the color temperature of the second light source being 2500 to 3200 K, a lighting circuit 3 configured to light each of the first and second light sources, and a control unit 4 which is capable of selecting a fadeout mode for continuously dimming and fading out both the first and second light sources and, when the fadeout mode is selected, in a period of a latter stage controls the lighting circuit to increase a light amount of the second light source to be larger than a light amount of the first light source.

Abstract: An LED lighting device includes a plurality of kinds of LEDs 1 and 2 having different color temperatures, an LED lighting circuit 3 configured to light each of the plurality of kinds of LEDs, and a control unit 4 configured to control an LED lighting circuit to simultaneously dimmably light the plurality of kinds of LEDs, subject the plurality of kinds of LEDs to dimming control through pulse width control in a deep dimming region where a dimming degree is equal to or lower than 20%, and subject the plurality of kinds of LEDs to the dimming control through amplitude control in other dimming regions.

Abstract: 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.

Abstract: 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.

Abstract: 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.

Abstract: 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.

Abstract: 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.

Abstract: 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.