TEMPERATURE ADJUSTING MECHANISM

PROBLEM TO BE SOLVED: To prevent an occupant in a cabin from receiving a sense of incongruity by driving sound of a fan by efficiently adjusting the temperature of a power source device by using air in the cabin. SOLUTION: A temperature adjusting mechanism has a first duct 21 for supplying air in the cabin to the power source device, a second duct 20 connected to the first duct 21 to supply more amount of air than the supply amount of air via the first duct 21 to the power source device by driving the fan, an information acquiring unit 70 for acquiring information on sound in the cabin, a switching mechanism 50 for switching the second duct 20 between a closed state and an opened state, and a controller 60 for controlling driving of the switching mechanism 50. The controller 60 makes the second duct 20 into the opened state via the switching mechanism 50 when sound in the cabin specified from the acquired information is larger than a threshold value on driving sound of the fan, and makes the second duct 20 into the closed state via the switching mechanism 50 when sound in the cabin specified from the acquired information is smaller than the threshold value. COPYRIGHT: (C)2010,JPO&INPIT