Citizen Electronics Co., Ltd.

Kenshi Aihara

Isao Miyashita

Akira Nikaido

Takashi Kobayashi

Naoki Miura

Kazumi Miyamoto

Masaki Tohyama

A sheet switch module () including a circuit board (), at least one key switch () mounted on one surface of the circuit board (), a light-guiding sheet unit () covering one surface of the key switch (), at least one LED () mounted on the circuit board () to enter light into the light-guiding sheet unit (), the light-guiding sheet unit () being formed by a plurality of light-guiding sheets () at least parts of which are overlapped, the key switch () being illuminated by the LED () by way of plurality of light-guiding sheets ().

Sheet switch module

A sheet switch module including a sheet switch () having a central contact () disposed on a circuit board (), a circumferential contact () disposed circumferentially of the central contact (), a spring () disposed above the central contact (), and a transparent sheet member () configured to cover the spring (), the sheet switch () forming a switching circuit such that the spring () provides electrical conduction between the central contact () and the circumferential contact () when the sheet member is pressed, the sheet member () being formed by a light guiding sheet () configured to guide light emitted from an LED () along an upper surface of the spring ().

Sheet switch, sheet switch module and panel switch

A sheet switch module includes a circuit board () provided with a fixed contact () thereon, a light source (), a movable contact () to face the fixed contact (), a sheet () to hold the movable contact () on the circuit board, a key top () disposed to face the movable contact and a light guiding plate () to guide light emitted from the light source () to the key top. The light-guiding plate () includes a light-receiving part () projecting toward an upper surface of the circuit board () and a light-guiding part (). The light-guiding plate () is positioned in a substantially horizontal state supported by the light-receiving part () on the upper surface of the circuit board ().

A light emitting sheet module includes a light guiding sheet to cover a plurality of key switches, at least one LED disposed on at least one end portion of the light guiding sheet, and a circuit board disposed on the one end portion of the light guiding sheet on which the LED is disposed. When the light emitting sheet module is, mounted on a switch board, it is capable of adaptation to key switches in a wide variety of forms and to illuminate the key switches with light emission of high brightness.

Light emitting sheet module

A light emitting device including a blue-system semiconductor light emitting element, a green-system semiconductor light emitting element, a yellow fluorescent member which absorbs a part of blue light from the blue-system semiconductor light emitting element and emits yellow-system light as excitation light, and a red fluorescent member which absorbs a part of green light from the green-system semiconductor light emitting element and emits red-system light as excitation light.

White light source and illumination apparatus using the same

A vibrator of the present invention comprises a coreless coil (), a driver () including a magnet () inserted in the coreless coil (), a yoke () for pinching the coreless coil () and facing the magnet (), and a top plate (), suspensions (and) for carrying resiliently the driver (). The driver () is reciprocated in an axial direction of the coreless coil () by applying an alternate current to the coreless coil () to generate vibrations. The vibrator can be miniaturized without increasing a cost and has a good rising of vibrations.

Vibrator and method for manufacturing the same

A vibrating device has an axially elongated frame, and a vibrating assembly including a hollow yoke. A magnetic driving device is provided for axially vibrating the vibrating assembly. A supporting shaft is provided for axially slidably supporting the vibrating assembly in the frame.

Vibrating device for axially vibrating a movable member

A cup-shaped yoke is axially movably provided in a cylindrical frame, and a cylindrical permanent magnet is securely provided in the yoke. A coil bobbin is cantilevered in the frame and inserted in a space between the yoke and the permanent magnet, and a driving coil is mounted on the coil bobbin. The yoke is held by a pair of coil springs for resiliently holding the yoke in the frame.

A speaker diaphragm is supported in a frame and a voice coil is secured to the speaker diaphragm. A rotor having a central permanent magnet and a cylindrical hub provided around the central permanent magnet is rotatably supported in the frame. A motor annular permanent magnet is disposed around the rotor. The voice coil is disposed in the gap formed between the central permanent magnet and the hub.

Growing community of inventors

Fujiyoshida, Japan

Kenshi Aihara