HEATING DEVICE FOR KEYBOARD MUSICAL INSTRUMENT

摘要

PROBLEM TO BE SOLVED: To obtain a heating device which is easily manufactured and reducible in manufacture cost and effectively warms up the part below the keyboard of the keyboard musical instrument and the legs of a player and nearby the knees by incorporating a heating wire heater which generates heat with electricity in a cloth which is large enough to cover the whole keyboard of the keyboard musical instrument. SOLUTION: An electric blanket (heating device) 1 has its main body composed of a blanket (cloth) 1a in a laterally long and rectangular plane shape and has the electric wire heater 2 wires inside. The electric wire heater 2 consists of electric wires 2a wired in upper and lower arrays across the center part of the blanket 1a, and the electric wires 2a are wired repeatedly zigzag very finely and very closely while keeping fixed width without any gap so that adjacent electric wires 2 are close to each other. Consequently, the electric wire heater 2 gains a long length to improve its heat generating effect. The blanket 1a is constituted to have nearly the same size as that of the whole keyboard so that the whole keyboard can be covered.