A blower device includes: a motor support component fixed to a lower surface of a casing; and a connector including a connection terminal in which electric current flows disposed below the casing. The blower device further includes: a first cover wall part extending in an up-and-down direction and a circumferential direction and spaced from an external wall part of the motor support component on an outer side; a groove portion connecting the first cover wall part and the motor support component; and a cover component which covers an upper side of the connector. The cover component is integrally formed with the outer side of the first cover wall part. A length of the groove portion in the circumferential direction is longer than the connector. Both ends of the groove portion are located outside of both ends of the connector in the circumferential direction.