To provide a showcase for cold storage including cold-insulating a display shelf of an upper stage in a weak cold temperature range for a packaged lunch, rice balls or the like, and cold-insulating a display shelf of a lower stage in a refrigeration temperature range for related products such as packaged salad, by one showcase.

In this showcase for cold storage having a first air trunk A for successively circulating the cold air cooled by a cooler from a front portion, a bottom portion, a back portion and a ceiling portion of the showcase to the front face portion by a first circulation fan, a second air trunk B for successively circulating the non-cooling air at the outside of the first air trunk by a second circulation fan, and an insertion port 16 formed on a back plate of a commodity display portion to insert a rear portion of an intermediate shelf duct, and partitioned into a refrigeration temperature range at a lower part of the intermediate shelf duct and the weak cold temperature range at an upper part of the intermediate shelf duct 15 by inserting the intermediate shelf duct 15 into the insertion port 16, a vent hole 18 is formed on a partitioning plate 17 for partitioning the first air trunk A and the second air trunk B of the back portion, to communicate the first air trunk A and the second air trunk B.