PROBLEM TO BE SOLVED: To satisfy (1) prevention of adsorption of an antibacterial agent on a filter in storage, (2) structure enabling a container and the filter to separate from each other and easy fixture of the container and (3) easy respective replacement of the filter and the antibacterial agent by easy work. SOLUTION: This fixing mechanism of the container sealing the antibacterial agent is a fixing mechanism of a container sealing the antibacterial agent in an air conditioner for a vehicle. It constitutes its characteristic feature by providing a fixing means 53 to removably fix the container 31 on a cover 51 to open and close an inlet and outlet port 50 of a filter unit 30. COPYRIGHT: (C)2006,JPO&NCIPI