PURPOSE: To enable the use of a warm storage section as cold storage section while allowing the formation thereof at an optional width by providing means for heating at an upper part within a storage while a cooling means and an air feed fan are disposed within an air oath between an air port and a damper.

CONSTITUTION: In use as cold/warm storage open show case, warm storage goods are displayed at an upper part from a partition 12 within a storage 5 while cold storage goods are displayed at a lower part from the partition 12. Moreover. a hot plate 21 and a heater 22 are energized while a damper 18 is turned to cut a blowing off of air at first air port 7 and all of air passing through an air path 6 is blown off through a third air port 13a. Thus, the goods displayed at the upper part from the partition within the storage 5 are heated to a specified temperature and the goods displayed at the lower part from the partition 12 are cooled down to a specified temperature. In other words, the air flowing into the air path 6 from the second air port 8 is cooled with an evaporator 11 and then blown out of a third air port 13a through a duct 13.