Abstract: A lighting fixture includes: one or more first light emitting devices configured to emit first light and second light for circadian rhythms; and a second light emitting device configured to emit third light having substantially effective emission wavelength in the 320 nm to 420 nm range. A correlated color temperature of the second light is higher than a correlated color temperature of the first light. A meranopic ratio of the second light is higher than a meranopic ratio of the first light.

Abstract: Provided are a lighting device in which adjacent lighting appliances appears continuous with inconspicuous joint therebetween, and a method for constructing a building. Each of a first lighting appliance and a second lighting appliance includes a lighting appliance body including a chassis, and a plurality of light sources, a fitting adapter disposed on the rear surface of the chassis, the fitting adapter being fitted into a mounting hole formed in a building material, and a light-transmissive cover. The first lighting appliance and the second lighting appliance are arranged adjacent to each other with respective corresponding ones of the lateral surface portions abutting against each other, The first lighting appliance includes a first coupling member disposed on the rear surface of the chassis, and the second lighting appliance includes a second coupling member disposed on the rear surface of the chassis.

Abstract: A lighting control system includes: a light fixture including: a first light emitting device configured to emit light having a first correlated color temperature of 3000 K or less in the CIE1931 color space chromaticity diagram, a second light emitting device configured to emit light having a second correlated color temperature equal to or higher than that of the first correlated color temperature, a third light emitting device configured to emit light having substantially effective emission wavelength in a 320 nm to 420 nm range, and an emission controller configured to cause the light fixture to irradiate illumination light by controlling irradiation percentages of the light emitted from the first, second, and third light emitting devices; and an information processing apparatus communicably connected to the light fixture and including a dimming controller configured to change the irradiation percentages.

Abstract: The present disclosure provides a method of mounting a lighting appliance that can be easily attached to a building material, a mounting structure for a lighting appliance, a lighting appliance, and a method of constructing a building. An electrical cable of a power supply unit disposed at a position that does not overlap a mounting hole on a rear side of a building material is passed through an inner opening of an annular mounting bracket, and a power supply side connector provided at an end portion of the electrical cable is positioned on a front side of the building material. The power supply side connector is connected to a lighting appliance side connector fixed to an upper surface of a fitting adapter provided on a rear surface of a lighting appliance body on a side opposite to a light emitting surface.

Abstract: A lighting control system includes: a light fixture including: a first light emitting device configured to emit light having a first correlated color temperature of 3000 K or less in the CIE1931 color space chromaticity diagram, a second light emitting device configured to emit light having a second correlated color temperature equal to or higher than that of the first correlated color temperature, a third light emitting device configured to emit light having substantially effective emission wavelength in a 320 nm to 420 nm range, and an emission controller configured to cause the light fixture to irradiate illumination light by controlling irradiation percentages of the light emitted from the first, second, and third light emitting devices; and an information processing apparatus communicably connected to the light fixture and including a dimming controller configured to change the irradiation percentages.

Abstract: A lighting control system includes: a light fixture including a first light emitting device configured to emit light having a correlated color temperature in the range of ±500 K from a prescribed value, a second light emitting device configured to emit light having a correlated color temperature in the range of ±500 K from the prescribed value, and an emission controller configured to cause the light fixture to irradiate illumination light by controlling irradiation percentages of the light emitted from the first light emitting device and the light emitted from the second light emitting device; and an information processing apparatus communicably connected to the light fixture, the information processing apparatus comprising a dimming controller configured to change the irradiation percentages of the light emitted from the first light emitting device and the second light emitting device in accordance with a time of day by transmitting dimming instructions.

Abstract: Provided are a lighting device in which adjacent lighting appliances appears continuous with inconspicuous joint therebetween, and a method for constructing a building. Each of a first lighting appliance and a second lighting appliance includes a lighting appliance body including a chassis, and a plurality of light sources, a fitting adapter disposed on the rear surface of the chassis, the fitting adapter being fitted into a mounting hole formed in a building material, and a light-transmissive cover. The first lighting appliance and the second lighting appliance are arranged adjacent to each other with respective corresponding ones of the lateral surface portions abutting against each other, The first lighting appliance includes a first coupling member disposed on the rear surface of the chassis, and the second lighting appliance includes a second coupling member disposed on the rear surface of the chassis.

Abstract: A method of installing a large lightweight lighting fixture includes: providing connector-terminated wiring in a space above a ceiling, the connector-terminated wiring being electrically connecting to the large lightweight lighting fixture, the ceiling comprising a ceiling material, the lighting fixture mounted to the ceiling without being fixed by a suspension member; connecting the connector-terminated wiring and a power supply adapter by using a connector of the connector-terminated wiring via an opening provided in the ceiling material; electrically connecting the lighting fixture and the power supply adapter while the lighting fixture is located in a room space below the formed ceiling; and mounting the lighting fixture to the ceiling material by passing a fastener through the opening of the ceiling material, wherein the fastener is included in (i) the lighting fixture, or (ii) the power supply adapter.

Abstract: Object: A building that enables lighting and air-conditioning to be effectively linked with each other is configured. Resolution means: An air-conditioning device including a connector receiving portion is installed on a ceiling, and the air-conditioning device and a plurality of lighting fixtures disposed around the air-conditioning device are electrically connected to each other with wirings provided for the number of the plurality of lighting fixtures installed around the air-conditioning device. Further, the air-conditioning device supplies power converted into a power voltage for the lighting fixtures to the plurality of electrically connected lighting fixtures. A wiring that passes through the rear of the ceiling is taken out of an opening of a ceiling member, and is connected to the lighting fixtures, so that the lighting fixtures are installed on the ceiling.

Abstract: The present disclosure provides a method of mounting a lighting appliance that can be easily attached to a building material, a mounting structure for a lighting appliance, a lighting appliance, and a method of constructing a building. An electrical cable of a power supply unit disposed at a position that does not overlap a mounting hole on a rear side of a building material is passed through an inner opening of an annular mounting bracket, and a power supply side connector provided at an end portion of the electrical cable is positioned on a front side of the building material. The power supply side connector is connected to a lighting appliance side connector fixed to an upper surface of a fitting adapter provided on a rear surface of a lighting appliance body on a side opposite to a light emitting surface.

Abstract: A method of installing a large lightweight lighting fixture includes: providing connector-terminated wiring in a space above a ceiling, the connector-terminated wiring being electrically connecting to the large lightweight lighting fixture, the ceiling comprising a ceiling material, the lighting fixture mounted to the ceiling without being fixed by a suspension member; connecting the connector-terminated wiring and a power supply adapter by using a connector of the connector-terminated wiring via an opening provided in the ceiling material; electrically connecting the lighting fixture and the power supply adapter while the lighting fixture is located in a room space below the formed ceiling; and mounting the lighting fixture to the ceiling material by passing a fastener through the opening of the ceiling material, wherein the fastener is included in (i) the lighting fixture, or (ii) the power supply adapter.

Abstract: A lighting control system includes: a light fixture including a first light emitting device configured to emit light having a correlated color temperature in the range of ±500 K from a prescribed value, a second light emitting device configured to emit light having a correlated color temperature in the range of ±500 K from the prescribed value, and an emission controller configured to cause the light fixture to irradiate illumination light by controlling irradiation percentages of the light emitted from the first light emitting device and the light emitted from the second light emitting device; and an information processing apparatus communicably connected to the light fixture, the information processing apparatus comprising a dimming controller configured to change the irradiation percentages of the light emitted from the first light emitting device and the second light emitting device in accordance with a time of day by transmitting dimming instructions.

Abstract: A lighting control system includes: a light fixture including a first light emitting device configured to emit light having a correlated color temperature in the range of ±100 K from a prescribed value, a second light emitting device configured to emit light having a correlated color temperature in the range of ±100 K from the prescribed value, and an emission controller configured to cause the light fixture to irradiate illumination light by controlling irradiation percentages of the light emitted from the first light emitting device and the light emitted from the second light emitting device; and an information processing apparatus communicably connected to the light fixture, the information processing apparatus comprising a dimming controller configured to change the irradiation percentages of the light emitted from the first light emitting device and the second light emitting device in accordance with a time of day by transmitting dimming instructions.

Abstract: A lighting control system includes: a light fixture including a first light emitting device configured to emit light having a correlated color temperature in the range of ±100 K from a prescribed value, a second light emitting device configured to emit light having a correlated color temperature in the range of ±100 K from the prescribed value, and an emission controller configured to cause the light fixture to irradiate illumination light by controlling irradiation percentages of the light emitted from the first light emitting device and the light emitted from the second light emitting device; and an information processing apparatus communicably connected to the light fixture, the information processing apparatus comprising a dimming controller configured to change the irradiation percentages of the light emitted from the first light emitting device and the second light emitting device in accordance with a time of day by transmitting dimming instructions.