AUTOMOBILE AIR CONDITIONER

PROBLEM TO BE SOLVED: To discharge drainage produced in an evaporator to the outside of a car without using a drain hose and to make both high and low pressure piping systems of this evaporator connectible to a compressor at the outside of a car without passing them through the interior. SOLUTION: In order to discharge any drainage from an evaporator unit 30 to the outside of a car, a conduit 36 to guide the drainage into a fresh air inlet duct part 22 is formed in a clearance between a bottom wall 31A of the evaporator 30 and a lining, while a backflow preventing orifice 36B is formed in an outlet part 36A of the conduit 36. In addition, both high and low pressure pipelines 43 and 51 are made so as to be directly discharged outside of a interior from a fresh air inlet port 23 of an intake unit 20 through an inner part of this unit 20 from the evaporator 30.