2. The control device according to claim 1 , wherein the data indicative of the degree of comfort is calculated based on a distance between an ideal environmental data stored in an ideal environmental data storage and each environment predicted data.
3. The control device according to claim 2 , wherein a plurality of ideal environmental data different on a season basis are stored in the ideal environmental data storage, and the data indicative of the degree of comfort is calculated based on a distance between the ideal environmental data selected on the season basis and the environment predicted data.