Window frame's drain device

PURPOSE: A rainwater discharge device for a window frame is provided to prevent stain from remaining on a wall since the device is detachably mounted on a drain hole on a window frame, and water from the window frame is discharged without contact with the wall. CONSTITUTION: A rainwater discharge device(A1) for a window frame comprises a body(1), a rib(2), and a sealing member(3). The cross section of the body has a "凹" shape, a fluid path(10) is formed in the body in a length direction to guide drain. The rib is formed on one end of the body and is attached to the window frame. The sealing member is arranged on the rear of the rib to maintain sealing when being attached to the window frame.