Fujitsu Ten Limited

Denso Ten Limited

Toyota Boshoku Kabushiki Kaisha

Noboru Hidaka

Akira Nishikawa

Yuichi Nakajima

Kiyoshi Ootani

Kayo Takamatsu

Kouichi Toyama

Kiyoshi Ohtani

A heat sink structure that is used for audio equipment includes a base and a plurality of heat dissipation fins. The heat dissipation fins extend from a predetermined surface of the base in a first direction orthogonal to the predetermined surface. The heat dissipation fins are arranged side by side in a second direction orthogonal to the first direction. In a cross-section in a plane parallel to the first and second directions, (i) each of the heat dissipation fins has a first side surface and a second side surface, the first and second surfaces facing oppositely from each other in the second direction, and (ii) inclinations, relative to the predetermined surface, of the first and second side surfaces of adjacent ones of the heat dissipation fins are different from each other.

Heat sink structure for audio equipment

A plate member of an acoustic equipment includes a flat plate that constitutes at least a part of the plate member that is used in the acoustic equipment. The flat plate includes a first drawn portion and a second drawn portion. The first drawn portion is recessed in a thickness direction of the flat plate with respect to a predetermined plane orthogonal to the thickness direction of the flat plate and has a rectangular outline when viewed in the thickness direction of the flat plate. The first drawn portion and the second drawn portion are arranged adjacent to each other so as to provide a predetermined gap therebetween. When a standing wave is formed on the flat plate, the first drawn portion and the second drawn portion are arranged so that the gap is located in a position of an antinode of the standing wave.

Plate member of acoustic equipment

A vehicle audio device includes a vibrator (), a first threaded member (), a second threaded member (), and a ring-shaped resilient member (). The first threaded member () includes a tubular portion (), an external thread () formed on an outer surface of the tubular portion (), and a flange () formed on one end of the tubular portion (). The resilient member () is fitted around the tubular portion () of the first threaded member () so as to axially oppose the flange () of the first threaded member (). The second threaded member () includes a ring-shaped portion () axially opposing the resilient member () from the side of the resilient member () not opposing the flange () of the first threaded member (). Internal threads () are formed on an inner surface of the ring-shaped portion () and are engageable with the external threads () of the first threaded member (). The vibrator () is mounted to one of the first and second threaded members (). The other of the first and second threaded members () is mounted to a vehicle interior trim panel (). The resilient member () is clamped and resiliently deformed between the flange () of the first threaded member () and the ring-shaped portion () of the second threaded member () through engagement between the external threads () and the internal threads ().

Audio devices for vehicles

An exciter for directly vibrating a board treated for dustproofing and heat dissipation, provided with a vibrator comprised of an outer yoke, a permanent magnet, and inner yoke, having a coil fixed inserted between the outer yoke and inner yoke, and having a coupler member for coupling the exciter to the surface of the board. The coupler member and vibrator are connected by an elastic member. A closed space is formed in the exciter by providing a sealing member between the outer yoke and coupler member. A through hole is formed in the outer yoke. Due to the vibration of the vibrator at the time of coil excitation, air convection is caused through the through hole between the closed space and the outside space.

Exciter for directly vibrating board and speaker apparatus used the same

An exciter for directly vibrating a board, which enables a sufficient rotational torque to be obtained by a work tool at the time of attachment or detachment, provided with a magnetic circuit unit having an outside yoke comprised of a side wall and a bottom, a permanent magnet fastened to the bottom, and an inside yoke and with a coil inserted into a clearance between the side wall and inside yoke, the magnetic circuit unit being vibratably supported at the coupler member by elastic members, the coupler member being screwed with the bracket member fastened to the surface of the board, two parallel flat surfaces engaging with ends of a work tool being provided at an outer circumference of the outside yoke, and the work tool being turned to attach/detach the coupler member with respect to the bracket member.

Growing community of inventors

Kobe, Japan

Noboru Hidaka