ANGLE SETTING DEVICE, SIGNAL INDICATION LIGHT UNIT, AND ILLUMINATOR UNIT

摘要

Disclosed is an angle setting device (4) having a first member (21) and a second member (22), which are coupled in a coupling direction (D1) parallel to a predetermined axis (C1), an annular seal (23) which defines a sealed space (24) between the first member (21) and the second member (22), and fastening members (25) which fasten the first member (21) with the second member (22) on the outer side of the annular seal (23) in the radial direction. The first member (21) is comprised of a first annular teeth row (27). The second member (22) is comprised of a second annular teeth row (28) which meshes with the first annular teeth row (27). The first annular teeth row (27) and the second annular teeth row (28) are annularly arranged about the predetermined axis (C1), and can be meshed at a predetermined rotational position in a circle about the predetermined axis (C1). The first annular teeth row (27) and the second annular teeth row (28) are arranged within the sealed space (24).