| 摘要 |
A support member of a circuit board includes a columnar portion capable of reducing an outer shape by elastic deformation and capable of passing through an opening provided on the circuit board, and a plurality of projecting portions provided to protrude from an outer circumferential surface of the columnar portion, arranged at a prescribed interval in an axial direction of the columnar portion, and passing through the opening of the circuit board when the columnar portion is elastically deformed to reduce the outer shape. The circuit board is arranged between the projecting portions adjacent in the axial direction of the columnar portion in a state where the columnar portion passes through the opening of the circuit board, so that a plurality of the circuit boards are held at the prescribed interval along the axial direction of the columnar portion.
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