Abstract: A heat exchanger for use in a vehicular air conditioning apparatus, including a plurality of first and second tubes; a first heat exchanger section, a boundary portion, and a second heat exchanger section; a plurality of first fins disposed on the first heat exchanger section and a plurality of second fins disposed on the second heat exchanger section; and a partition member formed at the boundary portion, wherein the partition member is made of a synthetic resin or synthetic rubber and in contact with the plurality of the first and second tubes and end surfaces of the plurality of the first and second fins at the boundary portion such that the partition member blocks the air from flowing between the first heat exchanger section and the second heat exchanger section.

Abstract: In an evaporator constituting part of a vehicular air conditioning apparatus, a first cooling section that faces a first front passage, and a second cooling section that faces a first rear passage are provided. At a boundary portion between the first cooling section and the second cooling section, a partition member constituted by a filled and hardened packing agent is formed. The partition member is formed so as to fill spaces, which are located between first fins that constitute the first cooling section and second fins that constitute the second cooling section. Air that flows through the first cooling section and air that flows through the second cooling section do not mix together in the interior of the evaporator by the partition member.