To reduce in weight and save refrigerant by ensuring an effective space in a deep freezer and shortening a refrigerant tube and wirings.

In the deep freezer 1 for a vehicle having two deep freezing chambers 11A, 11B by a moving partition 18, deep freezing first and second air conditioner units 13, 14 are disposed in the vicinity of each other on a ceiling 12 in the freezer so that cold air diffusing directions are opposed to one another with back surfaces thereof being faced with one another. The partition 18 is provided between a cover 15 covering the units 13, 14 and a floor 17 in the freezer.