Patent ID: 6037534
Filing Date: 2000-03-14
Classification: G09B

Abstract:
A keyboard musical instrument comprising:a stationary member extending in a certain direction;a keyboard including a plurality of keys arranged in said certain direction movable between respective rest positions and respective end positions with respect to said stationary member and having plane surfaces, respectively;a sound generating means associated with said keyboard for producing sounds corresponding to depressed keys of said keyboard; anda photo-radiating system includinga plurality of flexible strips having first end portions supported by said stationary member and second end portions respectively lying on said plurality of keys and moved together with said plurality of keys, and respectively having contours substantially corresponding to the surfaces of said plurality of keys,a plurality of optical indicators respectively attached to said second end portions over said plurality of flexible strips, anda driving signal supplying means electrically connected to said plurality of optical indicators and causing said plurality of optical indicators to selectively radiate rays of light along a tune.