| 摘要 |
PURPOSE: A hidden display device and method of a bidet are provided to simplify an exterior design by hiding buttons which are not used and to prevent water from flowing into a bidet by forming a button which uses a touch sensor. CONSTITUTION: A hidden display device of a bidet comprises an exterior case(300), a membrane switch(400), an LED guide(500), and a circuit board(600). The exterior case forms the exterior of an operation unit of a bidet. The membrane switch is arranged at the rear of the exterior case and lights button units. The LED guide is arranged at the rear of the membrane switch and individually sends light from multiple LEDs(600a) of the circuit board to the exterior case. The circuit board is assembled in the rear of the LED guide.
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