In addition, the chemical filter 3 is provided on the downstream side of the first prefilter 4 having permeability. Hereby, it is possible to remove a harmful chemical substance in the air passing through the first prefilter 4 by adsorbing it by active carbon.

Further, the filter element 2 is provided on the downstream side of the second prefilter 5 having permeability. Hereby, particulate matter passing through the chemical filter 3 and exhibiting no adsorption to the chemical filter 3, a substance falling from the chemical filter 3, and the like can be caught by the filter element 2 and removed from the air. Thus, clean air is supplied to the fuel cell stack 40, thereby making it possible to restrain an output decrease of the fuel cell stack 40.

Note that, when the fuel cell vehicle 30 is driven during snow fall, snow 50 (see FIG. 3) is taken into the air cleaner 1 with the air, so that the filter element 2 may be blocked or clogged by the snow 50 accumulated in the air cleaner 1. This might stop power generation, thereby making it difficult to continue the running of the fuel cell vehicle 30. However, in the present embodiment, by providing the bypass path 16 in the air cleaner 1 as described above, it is possible to continue the running of the fuel cell vehicle 30 as will be described below.