The present invention provides a flat panel display device, a stereoscopic display device, and a plasma display device. An accessory gearbox comprises a stationary frame that is circumferentially disposed about a central longitudinal axis of the engine. Upon receiving a request from the operator for a horn signal, the control for the active noise cancellation system generates a horn tone from the speaker associated with the active noise cancellation system. Self-restoring second push switch 3 and third push switch 4 are provided to in contact with the bottom face of the plate part on the side of first shaft 13 in positions symmetrical with respect to the central axis of pivot.