Panasonic Corporation

Panasonic Intellectual Property Management Co., Ltd.

Tetsuji Kawazu

Kiminobu Yamamoto

Shigeo Itou

Kiyohiko Iwamoto

Hiroshi Yoshikawa

Hiroyuki Kuramochi

Kazuyuki Kobayashi

Yoshiki Tanimura

Hitoshi Nakamichi

A ceiling fan includes a connecting portion fixed to a ceiling, an electric motor having a rotation shaft disposed on a lower portion of the connecting portion, a temperature detector provided on a lower portion of the electric motor for detecting a peripheral temperature, and a controller for estimating a room temperature based on the temperature detected by the temperature detector and driving the electric motor according to the estimated room temperature.

Ceiling fan

A ceiling fan includes a suspending part fixed to a ceiling and a ceiling fan body suspended via the suspending part. The ceiling fan body has a plurality of horizontally-provided blades, a motor that rotates the blades, a shaft protruding from an upper side of the motor, and a joint part that is fixed to an upper side of the shaft and is connected to the suspending part. The joint part is detachable from the suspending part and is provided with a suspension detecting part extending from the joint part to the suspending part. The suspension detecting part detecting an energized state between the suspending part and the joint part.

Ceiling fan with suspension detection

A ceiling fan includes a motor which rotates a plurality of blades, a shaft projecting from the motor, a pipe connected to an upper end of the shaft and which hangs from a ceiling surface, and a connecting rod for connecting the pipe and the shaft with each other via through holes formed in the pipe and the shaft, respectively. The ceiling fan also includes a displacement-correspondence tool which is displaced or which detects a displacement amount in correspondence with a relative positional displacement amount between the shaft and the pipe, and a power source control tool which controls energization to the motor in accordance with the displacement of the displacement-correspondence tool or the detected displacement amount.

A configuration including outer-rotation motor portion () including stator () with a center through which fixed axis () passes, and rotor () pivotally supported capable of rotating around stator (); a plurality of blade plates () radially arranged on rotor (); support base () having fixed axis () in a center thereof and located in a lower part of stator (); angle changing unit () provided on support base (); and a plurality of stationary blade plates () being detachably placed on stationary blade holders provided on angle changing unit (). With the configuration in which an elevation/depression angle of stationary blade plates () is adjustable by at least one stationary blade driving motor () that drives angle changing unit (), a structure is simplified.

A ceiling fan comprising a disc-like stator provided with a fixed shaft at the center, an annular rotor disposed in proximity 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 root portion fixed to the supporting frame, a blade portion coupled with the retaining member, and an offset portion formed by bending between the root portion and the blade portion, thereby preventing the fan blade from being damaged easily even when it is impressed with a load and ensuring the safety even if the fan blade is broken since the blade portion is held coupled to the rotor side.

A ceiling fan includes a motor for rotating multiple blades. This motor includes a hollow shaft that is disposed upright on the center of a disc-like stator, and a rotor around an outer periphery of the stator. The rotor integrally rotates with the blades. This motor further includes a cylindrical bearing housing, and a pair of ball bearings including an upper ball bearing and a lower ball bearing housed in this bearing housing. This bearing housing has a base in its center. The upper ball bearing is disposed over the base, and the lower ball bearing is disposed under the base in this bearing housing. Both bearings are fixed onto the hollow shaft.

Growing community of inventors

Aichi, Japan

Tetsuji Kawazu