| 摘要 |
PROBLEM TO BE SOLVED: To provide a push-button switch device capable of making illumination by a low-cost light source compatible with the thinning of the device. SOLUTION: This push button switch device is equipped with a PCB substrate 4, a switching element 5 having a conductive reversing spring 6 and stationary contacts 7, 8, an LED bare chip 9 provided on the PCB substrate 4, and a light guide layer 11 made of a light-transmitting resin mixed with an optical diffusing agent that coats the surface of the PCB substrate 4 and seals the LED bare chip 9. A hole 13 for partially exposing the PCB substrate 4 is provided in the light guide layer 11. The switching element 5 is provided in a space 14 surrounded by the inner wall of the hole 13 and the PCB substrate 4. An elastically deformable sheet 15 is laminated on the light guide layer 11 and covers the hole 13. The reverse spring 6 is formed, to be pushed and operated by an operating part 18 via a transmission part 20 and the sheet 15. COPYRIGHT: (C)2008,JPO&INPIT
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