Pioneer Electronic Corporation

Other

Pioneer Corporation

Tohoku Pioneer Corporation

Tomiaki Ando

Takashi Suzuki

Hiroyuki Kobayashi

Fumio Murayama

Kyoichi Matsuda

Shigeru Watanabe

Chuichi Endo

Takeshi Tokusyo

A voice coil bobbin coupled to a damper is allowed to vibrate in its axis direction within a magnetic circuit including a magnet and a plate supported by a yoke. A range extending between a neutral position of an end of the voice coil bobbin and a portion of the yoke opposing the end of the voice coil bobbin is longer than a range extending between the plate and a neutral position of a portion where the voice coil bobbin is coupled to the damper. A damper ring is fitted around the voice coil bobbin in a position closer to the plate within the portion where the voice coil bobbin is coupled to the damper. A rear face of the damper ring opposing the plate is shaped in face-geometry parallel to a face of the plate opposing the damper ring.

Speakers

An outer end portion A of an edge , which is formed at an interior of an outer periphery thereof, is mounted on an attaching surface which is formed inside an outer peripheral rim of a speaker frame . An outer peripheral surface of the outer end portion A is allowed to abut on the outer peripheral rim of the speaker frame . Also, an attaching screw section of the speaker frame is provided on the attaching surface . The outer end portion A has a wall thickness thicker than the thickness of a screw head of the attaching screw section, and is provided with a notch to avoid the attaching screw section . Therefore, the inside area of the speaker frame can be effectively utilized to obtain enough level of outputted sound pressure. Further, since a gasket is unnecessary for positioning and attaching the edge, the number of parts can be reduced to lead cost-down.

Loudspeaker

The present invention provides a speaker device in which assembly is easy, and which has high sensitivity and low distortion. The speaker device comprises a frame member, a piezoelectric element to which a sound signal is applied, a diaphragm attached to the piezoelectric element, a coil for boosting the sound signal, and a damper attached to the piezoelectric element in the opposite side face to the diaphragm to elastically support the piezoelectric element. The coil is wound with respect to the frame member, and the damper is attached on the frame member.

Speaker device

A loudspeaker has a magnetic circuit and a speaker frame attached to the magnetic circuit, which is mounted on a rear tray of an automobile. A grille is attached to the speaker frame so as to reflect sound generated from the magnetic circuit. The grille has a slit so as to radiate the sound in a forward horizontal direction.

In a speaker unit having a voice coil bobbin, a diaphragm and a damper, the voice coil bobbin is integrally molded with at least one of the damper and diaphragm. The voice coil may be molded into the voice coil bobbin, and the brocade lead wires from the voice coil may be molded into the damper.

Water-proof speaker unit

A mobile speaker system including a speaker unit mounted in a speaker box, a plurality of light sources provided inside the speaker box for irradiating the illumination panel, and a switching circuit for controlling the light sources. The light sources emit light of a plurality of colors and are controlled by the switching circuit so as to be selectively turned on to irradiate the illumination panel.

Mobile speaker system having an illumination effect

A speaker system for radiating acoustic energy into a cabin of a motor vehicle comprises a loudspeaker unit including a vibrating member, a vibrator for vibrating the vibrating member in response to an electric signal supplied thereto and a speaker frame supporting the vibrating member and the vibrator. The speaker system further includes a speaker support supporting the loudspeaker unit, which is abutted onto a support panel of the vehicle defining the cabin. A base member is provided outside of the support panel from the cabin, toward which the speaker frame is drawn by connecting member by way of an aperture formed in the support panel so as to urge the speaker support onto the support panel.

Speaker system for radiating acoustic energy into a cabin of a motor

A speaker with a tweeter angle adjusting device, including a woofer; a horizontal shaft supported on the woofer horizontally and rotatably; a horizontal adjusting knob disposed in parallel with and in the same rotating direction as the horizontal shaft, the horizontal adjusting knob being connected to the horizontal shaft through an interlocking mechanism; a tweeter; a tweeter housing which is secured to the horizontal shaft and which supports the tweeter through a vertical shaft rotatably in a direction perpendicular to the horizontal shaft; and a vertical adjusting knob connected to the tweeter through an interlocking mechanism to rotate in the same direction as the tweeter and journalled in a direction perpendicular to the horizontal shaft. The tweeter direction changing operation can be done easily and accurately because the tweeter shifts in the same directions as the turning directions of the horizontal and vertical adjusting knobs. Besides, since the tweeter can shift also in the transverse direction, the improvement of a high frequency range and a satisfactory stereo feeling can be attained.

Growing community of inventors

Yamagata, Japan

Tomiaki Ando