Kyocera Corporation

Seiji Horii

Yasushi Kitamura

Jouji Yoshikawa

Kenichi Ozasa

Masashi Osaka

Tomoko Asano

Satoshi Fukami

Hiroshi Taimura

Yasuhiro Ueno

Hiroki Itou

Tomohiro Inagaki

Atsuo Chiba

Takashi Ikegami

Daisuke Tsuiki

Akinori Wada

Talchi Kim

Kazuya Sono

Kazuchika Suzuki

Kosuke Teruyama

Hideaki Fujimoto

Yuta Sakamoto

Masahiro Shinya

Takaaki Watanabe

Hayato Mizuno

Hiroto Yahagi

Keiichi Nagoshi

Masayuki Otani

Ryosuke Kobayashi

Youji Yamada

Takashi Moriguchi

Shigeru Matsumura

A sound generator includes at least one piezoelectric vibrator including a piezoelectric element, a vibration unit in one of a non-contact state not contacting the at least one piezoelectric vibrator and a contact state contacting the at least one piezoelectric vibrator. While in the contact state, the at least one piezoelectric vibrator generates vibration in response to a signal, and causes a contact surface contacted by the vibration unit to vibrate and generate a sound to be emitted from the contact surface. The sound generator can detect driving allowed and driving denied states, and control application of a sound signal in accordance with the two states to the piezoelectric element.

Sound generator and sound generation system

An audio apparatus includes a housing, a piezoelectric vibration unit provided to the housing and having a piezoelectric element, and a communication unit for receiving an audio signal. When a received audio signal is applied to the piezoelectric element while a load of the audio apparatus is applied to the piezoelectric vibration unit, the piezoelectric element is deformed causing deformation of the piezoelectric vibration unit, whereby a contact surface in contact with the audio apparatus vibrates and generate a sound.

Audio apparatus, audio system, image display apparatus, and image projection apparatus

A sound generator includes a housing and a vibrator. The vibrator includes at least one piezoelectric element and has at least of a part thereof inside the housing. A contact portion on the at least one piezoelectric element is configured to transmit generated vibration to an object outside of the sound generator. The at least one piezoelectric element generates vibration in response to a signal from outside the vibrator, and causes the object to vibrate and generate a sound to emit from the object.

Sound generator

A sound generator and sound generation system including the sound generator includes a piezoelectric element of a stack type having a multilayer structure. The piezoelectric element stretches and contracts along a stacking direction generates vibration according to a sound signal. An object, different from the sound generator and from a human body, generates a sound using the vibration and acts as a speaker while in contact with the sound generator.

Sound generator, vibration member for the sound generator, and sound generation system

A sound generator includes a housing (), a piezoelectric vibrator () including a piezoelectric element (), at least a portion of the piezoelectric vibrator () protruding from the housing (), and an anchor () applying a load to the piezoelectric vibrator (). A portion or all of the piezoelectric vibrator () withdraws into the housing () under a force of a predetermined load or greater. While the load from the anchor () is being applied to the piezoelectric vibrator (), the piezoelectric vibrator () deforms in response to a sound signal, and deformation of the piezoelectric vibrator () vibrates a contact surface contacted by the piezoelectric vibrator (), causing sound to be emitted from the contact surface.

A sound generator includes a vibration unit including a piezoelectric element having a multilayer structure. The vibration generates vibration according to a sound signal, and an object generates a sound using the vibration and acts as a speaker. The object is different from the sound generator and from a human body, and is in contact with the sound generator.

A sound generator includes a piezoelectric vibrator () including a piezoelectric element (), an anchor applying a load to the piezoelectric vibrator (), and a control unit () configured to control an input voltage based on a frequency characteristic, the input voltage being applied to the piezoelectric element () as a sound signal. While the load from the anchor is being applied to the piezoelectric vibrator (), the piezoelectric vibrator () deforms in accordance with the input voltage applied to the piezoelectric element () from the control unit (), and deformation of the piezoelectric vibrator () vibrates a contact surface () contacted by the sound generator, causing sound to be emitted from the contact surface ().

A sound generator includes a housing (), a stand () supporting the housing (), a piezoelectric vibrator () including a piezoelectric element (), and an anchor applying a load to the piezoelectric vibrator (). While the load from the anchor is being applied to the piezoelectric vibrator (), the piezoelectric vibrator () deforms in response to a sound signal, and deformation of the piezoelectric vibrator () vibrates a mounting surface () on which the sound generator is mounted, causing sound to be emitted from the mounting surface ().

A sound generator includes a vibration unit () having a piezoelectric element () and also includes a weight () for applying a load to the vibration unit (). The vibration unit () deforms based on a sound signal while receiving the load from the weight (), thereby vibrating a contact surface () in contact with the sound generator () and generating a sound from the contact surface ().

Provided is an audio device, including: a vibratorthat includes a piezoelectric elementconfigured to undergo flexure and a panelconfigured to be bent directly by the piezoelectric elementto vibrate; and a holderthat includes a behind-the-ear portionto be hooked over a helix of a user's ear and that holds the vibratorin a position that allows the vibratorto abut against the user's ear, wherein sound is heard by a user.

Audio device

Frequency characteristics of an air conduction sound and a human body vibration sound are adjusted. An electronic apparatusaccording to the present invention includes a panela piezoelectric elementa housingfor mounting the paneland a memberattached to the piezoelectric elementwherein the memberand the paneldeform due to deformation of the piezoelectric elementand thus deliver the air conduction sound and the human body vibration sound to an object in contact with the panelthat is deforming, and the memberadjusts the frequency characteristics of the air conduction sound and the human body vibration sound.

Electronic apparatus and panel unit

According to the present invention, air conduction sound and human body vibration sound (e.g. bone conduction sound) are transmitted to a user without a need for pressing a vibration body itself to an ear. An electronic deviceof the present invention includes: a panel; a housingconfigured to support the panel; and a piezoelectric elementattached to the panel. The panelis deformed due to deformation of the piezoelectric element, and air conduction sound and human body vibration sound are transmitted to an object that is in contact with the deformed panel

Electronic device

Excessive deformation of a piezoelectric element is reduced. An electronic apparatusaccording to the present invention includes a panel, a piezoelectric element, a housingfor mounting the panel, and an intermediate memberattached to the piezoelectric element, wherein the intermediate memberand the paneldeform due to deformation of the piezoelectric element, thereby delivering an air conduction sound and a human body vibration sound to an object in contact with the panelthat is deforming.

Growing community of inventors

Yokohama, Japan

Seiji Horii