A dust collection device (1) is provided with: a housing (4) provided with an air duct (3) for passage of air; an unwinding unit (7) for supplying, to the air duct, a film (5) transported along a paththat traverses the air duct; a friction body (6) for applying friction to and charging the film fed from the unwinding unit; and a winding unit (8) for winding up the charged film disposed in the airduct. With the dust collection device, it is possible to provide a dust collection device wherein collection efficiency can easily be recovered and that does not require maintenance over a long period of time.