ROTARY KNOB

A rotary knob including: a knob main body having a peripheral wall that has a recess on an inner peripheral surface; a light guide member including a light guide section, a restriction section, and a light emitting surface in sequence; and a decorative member including an engagement section and a ring-like section that covers a front end of the peripheral wall. The recess is defined by a pair of opposed surfaces and a bottom surface. The light guide section is fitted into a space between the opposed surfaces. The restriction section includes a contact portion that protrudes contacts the peripheral wall. When the ring-like section contacts with the restriction section, the decorative member prevents the light guide member from moving. The peripheral wall includes a holding portion that pinches the light guide section in cooperation with the bottom surface.