An warm air device is provided with a casing (1) in which an air suction opening (32) and an air discharge opening (33) are formed in the outer surface of the casing (1) and in which an air passage (34) for connecting the air suction opening (32) and the air discharge opening (33) is formed within the casing (1); an air blower (30) which causes air to flow within the air passage (34) from the air suction opening (32) to the air discharge opening (33); a heat generation body (31a) provided within the air passage (34); and a fuse section (5) held in contact with the heat generation body (31a).