ICE BOX

PURPOSE:To obtain an ice box with a high reliability by providing a plurality of the portions of a projected strip groove formed on an inner casing with undercut portions and fixing a cooling pipe to the projected strip grooves by the undercut portions. CONSTITUTION:A plurality of the undercut portions 10 of a projected strip groove 5 formed on an inner casing are integrally formed and a cooling pipe 4 is fitted to the projected strip groove 5 of the inner casing by the undercut portions 10. That is, the cooling pipe 4 is fitted to a plurality of the undercut portions 10 provided in the projected strip groove 5 from the projected strip groove 5 of the inner casing 2. Accordingly, the cooling pipe 4 does not separate from the projected strip groove 5 of the inner casing 2 even though the inner casing 2 is projected to be deformed toward a cold storage chamber and a performance can be guaranteed in any condition of use. Thus, a factor dependent on a work management requiring a complete seal is removed and an ice box with a high reliability can be obtained.