Matsushita Electric Industrial Co., Ltd.

Panasonic Intellectual Property Management Co., Ltd.

Panasonic Corporation

The Furukawa Electric Co., Ltd.

Keiji Ishikawa

Hiromi Sawa

Kenichi Ajiki

Masamichi Ara

Toshinori Yamaji

Takashi Suzuki

Shinya Mizone

Satoshi Koura

Satoshi Ono

Tsuyoshi Inada

Shigeru Iwanaga

Akira Kabumoto

Kazuro Okuzawa

Noriyoshi Matoba

Shoouji Nakajima

A loudspeaker includes a frame, a magnetic circuit, a magnetic gap, a diaphragm, a voice coil, a connector portion, and a lead wire. The connector portion is provided at the frame, and includes a terminal. The lead wire connects between the terminal and the voice coil, and has a connection portion connected to the terminal. Then, a first holder that holds the lead wire is formed at the connector portion. The lead wire is held between the terminal and the first holder as being clamped.

Speaker and manufacturing method thereof

A magnetic circuit includes an upper plate, a magnet, a lower plate, and a center pole. The outer circumference of a frame is coupled with a diaphragm. One end of a voice coil is coupled with the diaphragm, and the other end is inserted into a magnetic gap formed between the upper plate and the center pole. The frame is provided with a through hole. An insertion part provided on the outer circumference of the upper plate is inserted into the through hole. The frame is coupled with the upper plate by bending the insertion part.

Loudspeaker, electronic device and mobile device both including the same, and method of producing the same

A dish washer/dryer includes a washing tub for accommodating an object to be washed, a washing section for washing the object to be washed, a heater for heating washing water, an exhaust port for discharging moisture inside the washing tub, an air blower for blowing outside-air, a mixing section disposed at an upstream side of the exhaust port and mixing the outside-air with washing-tub-inside-air, and an air volume distribution section for changing the feeding ratio of outside-air into the washing tub and the mixing section. This configuration provides a dish washer/dryer, in which a sufficient amount of outside-air is mixed with exhaust air in the washing tub so as to promote the temperature reduction of the exhaust air and the reduction of the moisture content in the exhaust air during drying operation, thereby enhancing the comfort of the exhaust air.

Dish washer/dryer

The present invention is directed to a speaker using lightweight, highly rigid diaphragm having excellent frequency characteristic and improving resistance to environment (including resistance to UV and resistance to fading). For this end, the speaker utilizes a cone-shaped diaphragm made from foamed or cellular resin such as polyethylene terephthalate (PET) resin or polyethylene naphthalate (PEN) resin with 30 &#x3bc;m average cell size. The use of such cone-shaped diaphragm is effective to improve sound quality of the speaker.

Loudspeaker

Speaker for an automobile

A loudspeaker comprising at least one magnet, a yokefixed to a bottom surface of the magnet, a flat platefixed on an upper surface of the magnet, a magnetic circuithaving a magnetic gapformed between the plate and the yoke, and a flat diaphragmprovided with a coildisposed above the magnetic gap. The magnet has a width greater than that of the plate, and at least a part of the upper surface of the magnet is exposed so that it directly faces the diaphragm. According to the structure of the present invention, a larger volume magnet can be used without increasing the size of the magnetic circuit. Furthermore, as magnetic flux can be concentrated in an upper region of the magnetic gap, the magnetic circuit becomes efficient and compact. Thus a compact and high-efficiency loudspeaker for high frequency sound reproduction can be provided.

Growing community of inventors

Mie, Japan

Keiji Ishikawa