| 主权项 |
1. A switch device that is for a vehicle and inputs an operation condition to a specified instrument according to user's finger manipulation, the switch device comprising:
a plurality of switch portions provided with design portions indicating switch functions and overlapping with a plurality of electrode portions; a detection portion that detects a capacitance change generated in accordance with a distance between the user's finger and each of the electrode portions; a brightness adjustment portion that adjusts brightness of each of the design portions; and a control portion that performs a brightness adjustment control, wherein in the brightness adjustment control, when the finger approaches the electrode portions arid the detection portion acquires the capacitance of the electrode portions, the control portion allows the brightness adjustment portion to increase brightness of the design portions corresponding to all the electrode portions whose capacitance exceeds a predetermined approach determination threshold value so that the increased brightness is higher than original brightness of the design portions, the control portion maintains a brightness control performed by the brightness adjustment portion when the finger further approaches any of the electrode portions and the capacitance of the any of the electrode portions exceeds the approach determination threshold value and falls short of a predetermined switch-on determination threshold value that is higher than the approach determination threshold value, when the capacitance of the any of the electrode portions exceeds the switch-on determination threshold value, the control portion turns on the switch portion corresponding to the any of the electrode portions to operate the instrument and subsequently returns the brightness increased by the brightness adjustment portion to the original brightness. |
