Method of mounting lighting appliance, mounting structure for lighting appliance, lighting appliance, and method of constructing building

A mounting structure for a lighting appliance, comprising:

• a power supply unit disposed at a position that does not overlap a mounting hole on a rear side of a building material in which the mounting hole is formed;
• an annular mounting bracket fitted into the mounting hole;
• a lighting appliance body including a plurality of light sources disposed in a region larger than an area of the mounting hole;
• and
• a fitting adapter provided on a rear surface of the lighting appliance body on a side opposite to a light emitting surface of the lighting appliance body, the fitting adapter including a lighting appliance side connector fixed to an upper surface of the fitting adapter, wherein
• a power supply side connector provided at an end portion of an electrical cable connected to the power supply unit is connected to the lighting appliance side connector, and
• the fitting adapter is fitted into an inner opening of the mounting bracket, and the upper surface of the fitting adapter is exposed to a space on a rear side of the building material.

A lighting appliance, comprising:

• a lighting appliance body including a base plate having a light source arrangement surface and a rear surface on a side opposite to the light source arrangement surface, and a plurality of light sources disposed on the light source arrangement surface;
• a mounting member provided on the rear surface side of the base plate;
• a mounting spring fixed to the mounting member and attached to a mounting hole formed in a building material;
• and
• a holding member fixed to the rear surface of the base plate, wherein
• the mounting member is sandwiched between the rear surface of the base plate and the holding member, and is movable in a direction parallel to the rear surface of the base plate.

A method of constructing a building, the method comprising:

• providing, among a plurality of wiring disposed on a ceiling rear of a ceiling formed with a plurality of ceiling materials, wiring with a connector as wiring for electrically connecting to a lightweight large lighting appliance as a lighting appliance that is not fixed with a hanging material when installed on a ceiling;
• connecting the wiring with a connector and a power supply unit by using a connector of the wiring with a connector, and disposing the power supply unit thus electrically connected to the wiring with a connector in a ceiling rear space;
• installing a mounting aid member on the ceiling material by passing a fastener of the mounting aid member through an opening of the ceiling material;
• drawing an electrical cable of the power supply unit disposed in the ceiling rear space into a room space through an opening of the mounting aid member, connecting the electrical cable to the lightweight large lighting appliance, and electrically connecting the wiring with a connector and the lightweight large lighting appliance;
• and
• passing a fastener of the lightweight large lighting appliance electrically connected to the wiring with a connector through the opening of the mounting aid member, and installing the lightweight large lighting appliance on the ceiling material.