| 摘要 |
<p>PURPOSE:To realize the keyboard device where keys are irradiated by light with a high recognizability in a simple structure without increasing the production cost and the key touch is easily adjusted. CONSTITUTION:Since plural spring attaching parts are provided in the casing of a white key 21, much key touch variation is given in accordance with attaching positions of springs SP or the number of attached springs SP. The production cost is not increased because general keys can be used in this structure. Light guides 23 and 24 condense the light thrown from a high-luminance LED to irradiate the inside face on the front end side of the key synchronously with the key touching timing, and therefore, the key is lit up with a high recognizability in the simple structure.</p> |
