| 摘要 |
PURPOSE: A switch guide light of a digital piano is provided to make the switch guide light turned on and off together with an operation of a switch installed on a control panel of the digital piano by forming the switch and the switch guide light in one body, the switch guide light being prepared for showing an operation state of the switch. CONSTITUTION: A switch operation part(150), located on a switch body(120) installed at a printed circuit board, moves up and down so that it can be contacted to the switch body. A diode coupling groove(170) is formed at the switch operation part. A light emitting diode(160) is fixedly inserted into the diode coupling groove and thereby electrically connected to the switch body. A switch operation guide part(200) is fixedly inserted into the switch operation part. A square protrusion(180) is formed on the switch operation guide part. A light pass groove(190) is installed horizontally in the square protrusion so that light of the light emitting diode can pass through the light pass groove. A transparent operation button(130) is coupled to the square protrusion.
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