To solve the problems of conventional devices and methods such that the air blast range by heating or cooling by an air conditioner lies in the opening of a show case in a conventional shop such as supermarket, a convenience store, or the like, that the chill of air curtain of the show case leaks to the passage in front of the show case and shoppers and others feel cold and uncomfortable, that the temperature near a lighting system is high and is used inefficiently, and that the power used in the power system where the lighting system is connected is unbalanced depending upon the time zone.
An air conditioner or a blower is installed so that the wind zone distribution of air blown out of the air conditioner within a shop may not spread to the air curtain of a show case but may spread to the front passage. Moreover, the input of the air conditioner or the lighting system is controlled, based on the temperature near the lighting system. Moreover, the power system is changed, according to the quantity of used power or the power rate.
COPYRIGHT: (C)2006,JPO&NCIPI
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