A direct drive washing machine having a direct drive system, the direct drive washing machine comprising: a tub (40, 140, 240); and a slim type motor having a heat radiating structure, the slim type motor being formed in an outer stator structure and comprising: a stator (10, 110, 210) in which stator cores (11, 111, 211) around which coils (13, 113, 213) are wound are disposed in an annular form in an annular stator support (14, 114, 214), wherein the annular stator support (14, 114, 214) is opened at a central portion thereof in order to emit heat generated in the inside of the motor to the outside, and wherein the annular stator support (14, 114, 214) includes an outer circumferential surface; a rotor (20, 120, 220) in which a number of permanent magnets (22a, 22b, 122a, 122b, 222a, 222b) are arranged in a back yoke (21a, 21b, 121a, 121b, 221a, 221b) mounted on a circular rotor support (23, 123, 223), to thus form an air gap with respect to the stator (10, 110, 210); a rotating shaft (30, 130, 230) that is coupled to a central portion of the rotor support (23, 123, 223) and is driven by a torque of the rotor (20, 120, 220); and a plurality of bolting-couplers (14a, 160, 260) which are extended and formed on the outer circumferential surface of the annular stator support (14, 114, 214) and include bolt-coupling holes (14b, 161, 162) through which bolts are fitted for directly coupling the annular stator support (14, 114, 214) to the tub (40, 140, 240) of the washing machine, wherein the stator cores (11, 111, 211) are supported by the annular stator support (14, 114, 214) and held in place at the annular stator support (14, 114, 214), and wherein the rotor (20, 120, 220) is placed in a space between the annular stator support (14, 114, 214) and the tub (40, 140, 240) of the washing machine. a stator (10, 110, 210) in which stator cores (11, 111, 211) around which coils (13, 113, 213) are wound are disposed in an annular form in an annular stator support (14, 114, 214), wherein the annular stator support (14, 114, 214) is opened at a central portion thereof in order to emit heat generated in the inside of the motor to the outside, and wherein the annular stator support (14, 114, 214) includes an outer circumferential surface; a rotor (20, 120, 220) in which a number of permanent magnets (22a, 22b, 122a, 122b, 222a, 222b) are arranged in a back yoke (21a, 21b, 121a, 121b, 221a, 221b) mounted on a circular rotor support (23, 123, 223), to thus form an air gap with respect to the stator (10, 110, 210); a rotating shaft (30, 130, 230) that is coupled to a central portion of the rotor support (23, 123, 223) and is driven by a torque of the rotor (20, 120, 220); and a plurality of bolting-couplers (14a, 160, 260) which are extended and formed on the outer circumferential surface of the annular stator support (14, 114, 214) and include bolt-coupling holes (14b, 161, 162) through which bolts are fitted for directly coupling the annular stator support (14, 114, 214) to the tub (40, 140, 240) of the washing machine, wherein the stator cores (11, 111, 211) are supported by the annular stator support (14, 114, 214) and held in place at the annular stator support (14, 114, 214), and wherein the rotor (20, 120, 220) is placed in a space between the annular stator support (14, 114, 214) and the tub (40, 140, 240) of the washing machine.