Actuator, touch panel display device, electronic apparatus

An actuator comprising:

• a diaphragm that vibrates to generate sound;
• a housing that is attached to an outer edge of the diaphragm to support the diaphragm;
• an accommodating space that is formed inside the diaphragm and the housing, and an axis of which extends in a thickness direction of the diaphragm in the middle of the diaphragm;
• a coil that is wound around the axis, is attached to a face of the diaphragm facing the accommodating space, and is disposed in the accommodating space;
• a movable body that is disposed in a radial inside space of the coil or on an extension of the radial inside space, within the accommodating space;
• and
• a spring that supports the movable body such that the movable body is movable in the axial direction within the accommodating space,
• wherein, when an electrical signal is supplied to the coil, the coil and the movable body are caused to move relatively in the axial direction, thereby vibrating the diaphragm to generate sound, and the vibration of the movable body vibrates the housing,
• wherein the movable body is provided with a weight increasing member that increases the weight of the movable body,
• wherein an electrical signal to be supplied to the coil is an alternating current, and
• wherein, when the electrical signal for one period is counted as one time, the number of times the electrical signals are to be supplied to the coil for vibrating the housing ranges from two to five.

A touch panel display device comprising:

• a panel unit having a display panel and a touch panel disposed on the display panel, a driving circuit that sends out an electrical signal when the touch panel is touched by a user, and an actuator that vibrates the panel unit on the basis of the electrical signal of the driving circuit,
• the actuator including:
• a diaphragm that vibrates to generate sound;
• a housing that is attached to an outer edge of the diaphragm to support the diaphragm;
• an accommodating space that is formed inside the diaphragm and the housing, and an axis of which extends in a thickness direction of the diaphragm in the middle of the diaphragm;
• a coil that is wound around the axis, is attached to a face of the diaphragm facing the accommodating space, and is disposed in the accommodating space;
• a movable body that is disposed in a radial inside space of the coil or on an extension of the radial inside space, within the accommodating space;
• and
• a spring that supports the movable body such that the movable body is movable in the axial direction within the accommodating space,
• wherein, when an electrical signal is supplied to the coil, the coil and the movable body are caused to move relatively in the axial direction, thereby vibrating the diaphragm to generate sound, and the vibration of the movable body vibrates the housing,
• wherein the movable body is provided with a weight increasing member that increases the weight of the movable body,
• a chassis,
• wherein a plate-shaped frame is disposed inside the chassis, the panel unit is sandwiched by a frame-like front face of the chassis and one face of the frame in a thickness direction thereof such that the touch panel faces the frame-like front face, and the actuator is attached to the other face of the frame in the thickness direction thereof and is disposed apart from the panel unit.

An electronic apparatus comprising:

• a panel unit having a display panel and a touch panel disposed on the display panel, a driving circuit that sends out an electrical signal when the touch panel is touched by a user, and an actuator that vibrates the panel unit on the basis of the electrical signal of the driving circuit,
• the actuator including:
• a diaphragm that vibrates to generate sound;
• a housing that is attached to an outer edge of the diaphragm to support the diaphragm;
• an accommodating space that is formed inside the diaphragm and the housing, and an axis of which extends in a thickness direction of the diaphragm in the middle of the diaphragm;
• a coil that is wound around the axis, is attached to a face of the diaphragm facing the accommodating space, and is disposed in the accommodating space;
• a movable body that is disposed in a radial inside space of the coil or on an extension of the radial inside space, within the accommodating space;
• and
• a spring that supports the movable body such that the movable body is movable in the axial direction within the accommodating space,
• wherein, when an electrical signal is supplied to the coil, the coil and the movable body are caused to relatively move in the axial direction, thereby vibrating the diaphragm to generate sound, and the vibration of the movable body vibrate the housing,
• wherein the movable body is provided with a weight increasing member that increases the weight of the movable body;
• and
• a chassis,
• wherein a plate-shaped frame is disposed inside the chassis, the panel unit is sandwiched by a frame-like front face of the chassis and one face of the frame in a thickness direction thereof such that the touch panel faces the frame-like front face, and the actuator is attached to the other face of the frame in the thickness direction thereof and is disposed apart from the panel unit.