The invention relates to an air purification device for a vehicle and has an object to provide a DOR (Direct Ozone Reduction) system that can improve durability of activated carbon as an ozone purifier. Figure 3 is a partially enlarged view of a fin 20 of Figure 2. Figure 3 (a) is a partial enlarged view of the fin 20 in a front side, and Figure 3 (b) is a partially enlarged view of the fin 20 in a rear side. As shown in Figures 3(a) and 3(b), in a louver 22, a coat amount of activated carbon is adjusted so as to gradually increase from a front side toward a rear side. Thereby, durability as the radiator 14 can be improved, while oxidation degradation of the activated carbon by active oxygen is allowed to some degree.
