| 摘要 |
PROBLEM TO BE SOLVED: To provide a button key conveniently usable by a person having disabled eyes and a learner of blind touch, by converting a panel key in an electronic apparatus loaded with a panel type input device to a protrusion- shaped button key at any time. SOLUTION: This button key 10 is detachably mounted to the upper layer of the panel key 41 on which a key code 42 is displayed, and it has a key top 1 for pressing input, a point part 2 brought into contact with or coming close to the panel key 41, and a supporting part 3 to support the key top 1. The key top 1 is transparent and the key code 42 displayed on the panel key 41 is made visible through it. The point part 2 is coupled with the key top 1 and is disposed so that its tip is brought into contact with or comes close to the panel key 41 when pressing it for inputting. The supporting part 3 supports the key top 1 on the upper layer of the panel key 41 and has an energizing mechanism 13 to energize the key top 1 upward.
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