| 摘要 |
PROBLEM TO BE SOLVED: To suppress the leakage of cold air from a peripheral edge of a base of a cooler chamber to the minimum.SOLUTION: This cooler chamber has a synthetic resin base 31 mounted in a state of covering an opening 14 formed at a top-side wall 10A of a storage body 10 and having a drain pan 40 for placing a cooler 50, and a suction opening 41 and a supply opening 42 formed at both sides of the drain pan, a heat insulating cover 30 placed on a top face of the base 31 and opened at its lower face, an annular groove 37 formed at the base 31 so as to surround the circumference of the drain pan 40, the suction opening 41 and the supply opening 42, and a heat insulating material fitted in the annular groove 37. The heat insulating material is formed of a lower end of a peripheral wall 56 of a heat insulating cover 55. A bottom face of the annular groove 37 is opened, and a lower end face of a peripheral wall 56 is kept into contact with an edge of the opening 14. |
