Patent ID: 8328521
Filing Date: 2012-12-11
Classification: F04D

Abstract:
1. A ceiling fan comprising: a disc-like stator provided with a fixed shaft at the center thereof; an annular rotor disposed to the periphery of the stator; a supporting frame fixed to the rotor and rotatably supported by the fixed shaft; a fan blade fixed to the supporting frame; and a retaining member having one end fixed to the supporting frame together with the fan blade and the other end coupled to the fan blade, wherein: the fan blade comprises a fan-blade frame having a first end portion fixed to the supporting frame, and a fan-blade plate fixed to a second end portion of the fan-blade frame; the fan-blade frame has an offset portion formed between the first end portion fixed to the supporting frame and the second end portion fixed to the fan-blade plate, the first end portion, the second end portion and the offset portion are formed in a single body; and one end of the retaining member is fixed to the supporting frame together with the first end portion of the fan-blade frame, and the other end is extended across the offset portion and coupled to the second end portion of the fan-blade frame, wherein the offset portion is inclined downward from the first end portion fixed to the supporting frame toward the second end portion fixed to the fan-blade plate in the fan-blade frame, wherein an offset height is at a trailing edge side of the blade portion larger than at a leading edge side of the blade portion, wherein respective edges of a portion of the first end portion adjacent to the offset portion, a portion of the second end portion adjacent to the offset portion and the offset portion are connected to each other in linear fashion at said respective edges at the trailing edge side and the leading edge side in a plan view.