Abstract: A fan case and a fan unit realize a fan motor attaching structure in which a fan motor is fixed without a tightening part while the number of functional parts is decreased. The fan case is formed in a box shape having an opening formed by a bottom face, side faces, a front face, and a rear face, and the opening is substantially similar to an outer shape of at least the two fan motors. The front face includes a handle, and the rear face has an opening to expose a connection surface of a connector electrically connected to the fan motor. The side face includes a first latch and a second latch, which are provided so as to be projected toward the opposite side face. A ventilating hole and a bent portion are provided in the bottom face.

Abstract: A fan case and a fan unit realize a fan motor attaching structure in which a fan motor is fixed without a tightening part while the number of functional parts is decreased. The fan case is formed in a box shape having an opening formed by a bottom face, side faces, a front face, and a rear face, and the opening is substantially similar to an outer shape of at least the two fan motors. The front face includes a handle, and the rear face has an opening to expose a connection surface of a connector electrically connected to the fan motor. The side face includes a first latch and a second latch, which are provided so as to be projected toward the opposite side face. A ventilating hole and a bent portion are provided in the bottom face.

Abstract: An electric system has exothermic components housed in a case; the case is formed with ventilation holes, and a fan forcibly evacuates the hot air from the inner space through the ventilation holes for removing heat from the exothermic components; foamable pain is spread on the surface near the ventilation hole, and a fuse element is exposed to the air passage; when a fire breaks out inside the case, the paint foams for closing the ventilation hole, and the fuse element stops the fans, whereby the fire is extinguished without being spread to the outside the case.

Abstract: An electric system has exothermic components housed in a case; the case is formed with ventilation holes, and a fan forcibly evacuates the hot air from the inner space through the ventilation holes for removing heat from the exothermic components; foamable pain is spread on the surface near the ventilation hole, and a fuse element is exposed to the air passage; when a fire breaks out inside the case, the paint foams for closing the ventilation hole, and the fuse element stops the fans, whereby the fire is extinguished without being spread to the outside the case.