To improve amenity by mitigating the fatigue and improve the drying when a body is wet by preventing various inferior symptoms and irritation caused by inferior blood circulation and cold due to driving in the winter season, driving wearing many clothes and driving a long distance.

A fan is attached to the bottom side 4 of a seat 2 to heat the seat itself by a conventional automobile heating, in this case, a hot air is upward blown from the inside of the seat 2 to heat the buttocks part, and a hot air outlet 3 is provided to blow the hot air inside the knees and heat the knees. The seat 2 is so formed that the hot air is made to pass the inside from the inside of the seat 1 to heat the back and is blown from the upper part of the seat 2 to heat the shoulder, the back of the neck and the cabin inside. This constitution can double the sensible temperature or more of that of the conventional one.