Panasonic Intellectual Property Management Co., Ltd.

Panasonic Corporation

Panasonic Ecology Systems Co., Ltd.

Panasonic Manufacturing Malaysia Berhad

Hiroyuki Kuramochi

Shigeo Itou

Kiminobu Yamamoto

Kiyohiko Iwamoto

Kee Cheng Ng

Hironari Ogata

Daiki Sakito

Tetsuji Kawazu

Kazuyuki Kobayashi

Boon Hooi Teo

Hitoshi Nakamichi

Fumiya Suzuki

Wei Ming Tan

Tatsuya Yamashita

A fan blade includes a blade body blowing air and a root portion secured to a support part. A first end part of a fall prevention member is attached to a first mount portion provided in the support part, and a second end part of the fall prevention member is attached to a second mount portion provided in the blade body. A controller controls electric energization to a DC motor to cause the fan blade to stop rotating when the fan blade breaks, the blade body is retained by the fall prevention member, the blade body is tilted, and at least one of a current value or a rotation speed measured by a measurer changes from a predetermined value.

Ceiling fan

A first protrusion protruding from an upper lighting cover is fitted into a first installing portion provided in a cover and a second protrusion protruding from the upper lighting cover is inserted into a first hole provided in the cover. In a case where disassembly is performed from this state, disassembly can be accomplished by breaking a first breaking portion provided around the first installing portion. In a case where reassembly is performed from this state, the second protrusion protruding from the upper lighting cover is fitted into a second installing portion provided in the cover.

A ceiling fan includes blade () that is integrally formed of root (), vane (), and step () for maintaining vane () in a state inclined from horizontal. Blade () includes bend ()on upstream side (11c), first reinforcement () onupstreamdownstreamside(c)(11b), and a plurality of second reinforcements () between bend () and first reinforcement (). First reinforcement length (a) is longer than second reinforcement length (a). Further, the ceiling fan includes blade drop prevention portion () for locking blade () to support ().

Ceiling fan having reinforcements

The ceiling fan includes: a body having a plurality of blades and an upper mounting pipe portion; a suspender which is fixed to a ceiling; a first pipe which is suspended from the suspender and suspends the body by the upper mounting pipe portion; and a second pipe which is accommodated in the inside of a lower portion of the first pipe and into which an upper portion of the upper mounting pipe portion is inserted. The first pipe, the second pipe and the upper mounting pipe portion are connected to each other by a connecting bolt which penetrates an overlapping part where the first pipe, the second pipe and the upper mounting pipe portion overlap with each other. A hollow projecting portion which projects from an outer peripheral surface of the second pipe is engaged with a recessed portion formed on an edge of a lower opening of the first pipe and a protruding portion formed on an outer peripheral surface of the upper mounting pipe portion thus restricting at least the relative movement among the first pipe, the second pipe, and the upper mounting pipe portion in the rotating direction of the blades.

In a ceiling fan in which root portions of blades are attached to a support portion to be rotary driven, a fall preventing member having a loop portion formed by a wire rod is provided, a through hole of which the loop portion of the fall preventing member penetrates is provided on the root portions of the blades, the support portion is provided with an engaging portion which is engageable with the loop portion of the fall preventing member, the loop portion of the fall preventing member is disposed to be engageable with the engaging portion of the support portion, the loop portion is engaged with the engaging portion of the support portion when an attachment part of the support portion and the blades is broken, and the blades are supported on the support portion through the loop portion of the fall preventing member in a state in which inner edges of the root portions of the blades are positioned on an outside of an outer edge of the support portion.

A ceiling fan includes blade () that is integrally formed of root (), vane (), and step () for maintaining vane () in a state inclined from horizontal. Blade () includes bend (), first reinforcement () on upstream side (), and a plurality of second reinforcements () between bend () and first reinforcement (). First reinforcement length () is longer than second reinforcement length (). Further, the ceiling fan includes blade drop prevention portion () for locking blade () to support ().

A ceiling fan includes a suspending unit and a ceiling fan body. The ceiling fan body includes a shaft; a motor; a plurality of blades; an upper body cover having a first opening, at a central part, for passing the shaft therethrough, and a second opening outside the first opening; and a lower body cover. The upper body cover rotates with the blades and has a first wall standing vertically between the first opening and the second opening.

A ceiling fan includes a suspension part, a pipe, and a main body, the main body has a coupling part, an upper portion of the coupling part has a coupling hole, a lower portion of the pipe has a pipe hole, the coupling part is inserted into the pipe, a bolt inserted into the coupling hole and the pipe hole, and a nut. The bolt includes a threaded portion and a head having a curved surface that conforms to the shape of the outer surface of the pipe. The curved surface has a head direction guide part that guides the direction of the curved surface such that the curved surface is fixed in contact with the outer surface with the nut.

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.

Growing community of inventors

Aichi, Japan

Hiroyuki Kuramochi