Input device using touch panel

An input device using a touch panel, comprising:

• a touch panel including an analog switch area where a switch displayed on a display device is to be turned on in accordance with coordinate information on X-axis and Y-axis positions acquired by detecting a resistance value at a point where a transparent electrically-conductive film of an upper substrate and a transparent electrically-conductive film of a lower substrate are in contact with each other, and including a fixed switch area where an upper common switch electrode and a lower fixed switch electrode, which are fixedly provided in predetermined positions by etching the transparent electrically-conductive films of the upper substrate and the lower substrate, are to come into contact with each other to transmit an ON signal;
• an illumination film provided on the touch panel in such a way as to expose the analog switch area of the touch panel, and provided with a display mark in the fixed switch area;
• a case including an opening capable of housing the touch panel;
• a transparent resin film stuck to a surface of the case;
• an adhesive for bonding the touch panel to a back surface of the transparent resin film inside the opening;
• and
• the display device and an illumination device provided on a supporting board under the touch panel, and
• an adhesive for bonding each side surface of the touch panel and the opening of the case together by filling a gap therebetween, wherein
• in the analog switch area of the touch panel, a portion of the touch panel above the switch displayed on the display device is touched to perform input, and
• in the fixed switch area of the touch panel, a portion where the display mark exists is touched to perform input, the illumination device provided on the supporting board is lit in response to the ON signal, and the display mark in the illumination film appears.