| 摘要 |
PROBLEM TO BE SOLVED: To improve the displaying effect of a display part, to easily read displaying signs and characters, to fit the display part on a printed wiring board with one-touch operation, and to connect a conductor of the display part. SOLUTION: A masking processing surface 54 is formed on the front surface of a printed wiring board 50 in which printed wiring and a display part are assembled, a detachable attaching means is provided on the base part of the display part, the display part is fitted to an attaching hole 52 of the masked printed wiring board, and a conductor is connected to a conductor surface 53.
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