Purpose: a cooling and heating device of a vehicle is risen or is cooled down by a seat being arranged to passenger is made to warm up or cool, is provided by a blowing duct cold or from some gas chambers into seat in the hot-air that an air-conditioning generates. Construction: a cooling and heating device of a vehicle includes the blowing duct (40,50) connecting with an air-conditioning (30); What gas chamber (60a, 60b) was formed among seat (70a, 70b), it is provided by blowing duct from the air that air-conditioning transmits and enters seat; Blowing fan (80) is placed on gas chamber, accelerates the flowing of air; The discharge port being connect with gas chamber, what the air of discharge supply was formed to gas chamber and on the outside at seat. Blowing duct provides air from the lower part at seat to gas chamber.
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