INFRARED RAY TOUCH SWITCH DEVICE

摘要

PROBLEM TO BE SOLVED: To provide an infrared ray touch switch device in which improvement in an S/N by light reflected by the surface/rear face of a touch panel and disturbance light such as the solar light or the like from the touch panel can be set easily.

SOLUTION: The switch device consists of: a control circuit part 4 equipped with an infrared ray emitting element 3a and an infrared ray receiving element 3b installed on the opposite side of an operation face of the touch panel 2; a case 1 that houses the control circuit part 4; and the touch panel 2 fixed to a window face of the case 1. The optical axis of infrared ray emitting element and the infrared ray receiving element installed on the control substrate 4a of the control circuit part 4 and both flat-faces of the touch panel are fixed to the case at a prescribed angle. The infrared ray projected from the infrared ray emitting element is reflected by the operation face of the touch panel and the rear face on the opposite side to the operation face, and a reflection light amount of the infrared rays received by the infrared ray receiving element is restricted so that an existence/absence of a reflecting article 7 of the operation face is distinguished.

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