To provide a cooling storage having a new air curtain forming structure.

A ventilation duct 50 is mounted in upper and lower heat insulating doors 40 in a state of being vertically penetrated therethrough, and a blower device 60 is mounted at a front side of a lower face of a refrigerator main body 10. The blower device 60 sucks the air at a lower face side by a cross flow fan 62 through a rectification member 70, and supplies the air toward a lower face of the lower heat insulating door 40 through a lower duct 80. A machine room 20 is provided with a guide plate 110 for directing the air from the ventilation duct 50 toward a condenser 23. When the heat insulating doors 40 are opened, air curtain A is formed at an outer side of an opening portion 18 by the air supplied from the lower duct 80 at a lower side and from the ventilation duct 50 of the lower heat insulating door 40 at an upper side, and when the heat insulating doors 40 are closed, the air from the blower device 60 rises in the ventilation duct 50 of the upper and lower heat insulating doors 40 and guided by a guide plate 110 to be directed to the condenser 23 as cooling air.