Patent ID: 8334794
Filing Date: 2012-12-18
Classification: G06F,H01H

Abstract:
1. An input device comprising: a plurality of manipulation portions; an input function portion which is manipulated by the manipulation portions to perform an input function; a light guiding sheet which faces the rear side of the plurality of manipulation portions; and a light source which applies light to the inside of the light guiding sheet, wherein a rear surface opposite to a front surface of the light guiding sheet facing the manipulation portions is provided with a plurality of concave portions which is depressed to the inside of the light guiding sheet, wherein each concave portion has a circular opening and an inner surface which is a smooth concave curve surface, and wherein light propagated through the inside of the light guiding sheet is reflected by the inner surface toward the inside of the light guiding sheet, and the light is applied from the front surface of the light guiding sheet to the manipulation portions.