PURPOSE: To release a worker from harsh environment such as cold work, make cleaning of floors, devices, etc., easier, reduce labor of replacing and displaying work at a store and the like, and quickly supply articles of good quality at reasonable prices according to consumers' needs.

CONSTITUTION: The title showcase comprises a cart 2 for storing and conveying articles 7, a stationary or movable type open showcase main body 1, a storing atmospheric air circulation auxiliary means 3 set on the aisle side of the main body 1, a storing atmospheric air generating means 4 set directly or indirectly to the main body, a storing atmospheric air circulating means 5 secured to the main body, and a storing atmospheric air controlling means 6 set directly or indirectly to the main body. The cart 2 can be easily carried in and out of the showcase main body 1 and, moreover, quality and the like of the articles 7 are maintained efficiently.