PROBLEM TO BE SOLVED: To simplify the whole structure by enabling rational means to cool a regulator of an electric motor for driving a blower.SOLUTION: A particulate matter feeder includes: a blower 6 for introducing air for wind force conveyance to a particulate matter feeding route a blower motor 64 for rotatively driving the blower 6 and a regulator 65 that is provided in a drive circuit of the blower motor 64. A heat radiation part 66 of the regulator 65 is arranged to come into contact with the air flowing through an air channel of the blower 6.SELECTED DRAWING: Figure 3