| 摘要 |
PROBLEM TO BE SOLVED: To use a dead space in the periphery of a tank as a passage for wiring and to facilitate connecting work for wiring. SOLUTION: A rear part such as an upper tank 1 supporting a side sound relay board 5 and a side display relay board 9 is mounted on the back of a front frame, front parts such as a right speaker 11 and right indicating lamp devices 14, 15 are mounted on the front side of the front frame, and a wire 24 from the right speaker 11 and a wire 30 from the right indicating lamp devices 14, 15 are led out through a wiring hole 19 from the front side of the front frame to the back side to be connected to the side sound relay board 5 and the side display relay board 9 by connectors.
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