| 摘要 |
PROBLEM TO BE SOLVED: To provide a lens member attachment structure that facilitates an attachment, and makes the attachment stable. ! SOLUTION: A lens member 5 to be attached to an opening part 4b of an instrument casing 4 comprises: a fitting part 5A to be fitted into the opening part 4b; and a light guide part 5B that guides light to the fitting part 5A. In the instrument casing 4, a pair of lock piece parts 6 is provided that has a lock pawl 6a capable of locking the fitting part 5A of the lens member 5 on both sides of the opening part 4b across the opening part 4b, and a pair of regulation piece parts 7 is provided between each lock piece part 6 and a casing inner wall surface. The pair of regulation piece parts 7 is arranged at the same interval as a width of the fitting part 5A, and each lock piece part 6 has flexibility. In a state where the lens member 5 is fitted into the opening part 4b, a first engagement salient part 5Ab comes into contact with a tip part of the regulation piece part 7, and |
