Abstract: A side reflector assembly is provided for mounting on a spoked wheel such as a bicycle. The assembly includes a plate-like reflector means and a cylindrical connector or coupler means to be coaxially fitted in the reflector means. The reflector means is provided at the center portion of its front face with a bottomed round aperture. The aperture is provided in the leading edge of the periphery thereof with a pair of notches for receiving a wheel spoke, and on the inner wall thereof adjacent to said notches with thicker wall portions. The reflector means is modified to have a set of three apertures on both sides thereof to accommodate different spoke arrangements.

Abstract: This invention provides a reflector adapted to be mounted on the spokes of a spokewise bicycle wheel or the like, such reflector including a plate-like reflector body having reflective surfaces each provided with reflective zones capable of reflecting incident light in generally parallel relation thereto. This reflector further comprises a through hole relative to said reflective surfaces, a nut portion which is coaxially movable in the through hole, a hook member, a bolt portion affixed to said nut portion, a fixing means and a rotation-restraining means. The hook member is integrally formed with one end face of said nut portion and extends therefrom in the axial direction. The bolt portion is provided for firmly pressing a spoke against the inside face of said hook member.