PROBLEM TO BE SOLVED: To solve problems for example, since an ear plug blocks sounds when a person wears the ear plug to each of ears, if the person sleeps while wearing the ear plugs, the ear plugs block a sound of an alarm clock so that the person cannot get up on time.SOLUTION: The ear plug has a function of a timer.COPYRIGHT: (C)2017,JPO&INPIT【課題】耳栓は耳につけると音を遮断する為に、耳栓をしたまま寝てしまうと、例えば目覚まし時計の音なども遮断してしまい、定刻に起きれなくなるリスクが生じた。【解決手段】耳栓にタイマーの機能をつける。