A fan motor comprising: an inner housing having an inner space defined therein; a rotation shaft assembly having a rotor and a bearing mounted on a rotation shaft, wherein the rotation shaft is supported in the inner housing; a stator disposed to surround the rotor in the inner housing; an impeller connected to the rotation shaft; and an outer housing for surrounding an outer periphery of the inner housing and an outer periphery of the impeller, wherein the outer housing has an inlet body for guiding air to the impeller, wherein a heat dissipation vane for guiding air sucked into the inlet body and then passed between the inner housing and the outer housing is formed on an outer circumference face of the inner housing, characterized in that the fan motor further comprises: an outer case having an outer space defined therein in which the outer housing is accommodated; and at least one PCB module (9, 9A, 9B) disposed in the outer space to control the fan motor and in contact with an outer circumference face of the inlet body; wherein the PCB module (9, 9A, 9B) includes: a PCB having a controlling part installed thereon; and a heating part installed on the PCB, wherein the heating part includes a curved face surrounding the outer circumference face of the inlet body and in a face contact with the outer circumference face of the inlet body, wherein the heating part is a heat transfer member for transferring a heat of the PCB to the inlet body or an electronic part having a circuit therein and having a relatively high heat dissipation quantity among the controlling parts installed on the PCB; wherein in case the PCB module (9, 9A, 9B) includes a pair of PCB modules (9A, 9B), the pair of PCB modules (9A, 9B) are symmetrically arranged with the outer housing therebetween. an inner housing having an inner space defined therein; a rotation shaft assembly having a rotor and a bearing mounted on a rotation shaft, wherein the rotation shaft is supported in the inner housing; a stator disposed to surround the rotor in the inner housing; an impeller connected to the rotation shaft; and an outer housing for surrounding an outer periphery of the inner housing and an outer periphery of the impeller, wherein the outer housing has an inlet body for guiding air to the impeller, wherein a heat dissipation vane for guiding air sucked into the inlet body and then passed between the inner housing and the outer housing is formed on an outer circumference face of the inner housing, characterized in that the fan motor further comprises: an outer case having an outer space defined therein in which the outer housing is accommodated; and at least one PCB module (9, 9A, 9B) disposed in the outer space to control the fan motor and in contact with an outer circumference face of the inlet body; wherein the PCB module (9, 9A, 9B) includes: a PCB having a controlling part installed thereon; and a heating part installed on the PCB, wherein the heating part includes a curved face surrounding the outer circumference face of the inlet body and in a face contact with the outer circumference face of the inlet body, wherein the heating part is a heat transfer member for transferring a heat of the PCB to the inlet body or an electronic part having a circuit therein and having a relatively high heat dissipation quantity among the controlling parts installed on the PCB; wherein in case the PCB module (9, 9A, 9B) includes a pair of PCB modules (9A, 9B), the pair of PCB modules (9A, 9B) are symmetrically arranged with the outer housing therebetween. an outer case having an outer space defined therein in which the outer housing is accommodated; and at least one PCB module (9, 9A, 9B) disposed in the outer space to control the fan motor and in contact with an outer circumference face of the inlet body; wherein the PCB module (9, 9A, 9B) includes: a PCB having a controlling part installed thereon; and a heating part installed on the PCB, wherein the heating part includes a curved face surrounding the outer circumference face of the inlet body and in a face contact with the outer circumference face of the inlet body, wherein the heating part is a heat transfer member for transferring a heat of the PCB to the inlet body or an electronic part having a circuit therein and having a relatively high heat dissipation quantity among the controlling parts installed on the PCB; wherein in case the PCB module (9, 9A, 9B) includes a pair of PCB modules (9A, 9B), the pair of PCB modules (9A, 9B) are symmetrically arranged with the outer housing therebetween. a PCB having a controlling part installed thereon; and a heating part installed on the PCB, wherein the heating part includes a curved face surrounding the outer circumference face of the inlet body and in a face contact with the outer circumference face of the inlet body, wherein the heating part is a heat transfer member for transferring a heat of the PCB to the inlet body or an electronic part having a circuit therein and having a relatively high heat dissipation quantity among the controlling parts installed on the PCB; wherein in case the PCB module (9, 9A, 9B) includes a pair of PCB modules (9A, 9B), the pair of PCB modules (9A, 9B) are symmetrically arranged with the outer housing therebetween.