| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide an electronic keyboard instrument which can make a sound generated by a loudspeaker excellently reach either a listener or a player over a low register to a high register. <P>SOLUTION: The electronic keyboard instrument is equipped with a musical instrument main body 2, right and left side plates 3 which support the musical instrument main body 2, the loudspeaker 7 which is arranged in the musical instrument main body 2 so that a sound emitting surface 7a faces down, a reflecting plate 4 which reflects the sound from the loudspeaker 7 below the musical instrument main body 2, a link bar 8 which extends in the front-rear direction between at least one of the right and left side plates 3 and the reflecting plate 4 and is linked freely turnably to the side plate 3 and reflecting plate 4 respectively at 1st and 2nd fulcra spaced in the front-rear direction, 1st and 2nd lock mechanisms which are arranged between the 1st and 2nd fulcra and lock the link bar 8 detachably to the side plate 3 nearby the 2nd fulcrum and to the reflecting plate 4 nearby the 1st fulcrum, and stoppers 19a and 19b which are provided in the side plate 3 and on which the reflecting plate 4 abuts, so that the turning of the plate 4 is blocked. <P>COPYRIGHT: (C)2004,JPO |
