To provide a movable contact body which has a light guide function for composing an input operation part for various kinds of electronic units and can compose an illumination panel switch, wherein even if it has a structure in which an adhesive layer on a lower surface side of a base sheet composed of a light guide sheet and the adhesive layer supports the movable contact, a loss of a light volume can be controlled and a required luminance can be obtained.
The movable contact body 10 provided with a light guide function is provided with a base sheet 1 made of TPU which has a concavo-convex portion 3 at a position of a base material lower surface which is an illumination-required position, and on which a membrane 5 having a lower light refraction factor than that of the base sheet 1 is formed on a side of a lower surface so that the concavo-convex portion 3 can be embedded, and a movable contact 130 is held by an adhesive layer 111 formed on a lower surface of the membrane 5. As a result, the illumination panel switch which can reduce a loss of light volume or the like and can easily obtain a required luminance on an illuminated position is realized.
| JP4017854 | Switch device |
| JP2008108072 | IMAGE FORMING DEVICE AND ELECTRONIC EQUIPMENT |
AISAKA TSUTOMU
CHIKAHISA YOSUKE
| JP2008181862A | 2008-08-07 | |||
| JP2006318905A | 2006-11-24 | |||
| JP2007053063A | 2007-03-01 | |||
| JP2007214082A | 2007-08-23 | |||
| JPS5658678U | 1981-05-20 |
Hiroki Naito
Daisuke Nagano