A decoration is installed in a seating channel provided in a handle bar. The seating channel with the decoration installed therein is shielded by a transparent or translucent handle cover. Cover end coupling pieces are provided at both ends of the handle cover and coupled with coupling ribs of a handle bar body of the handle bar or a cover base. The cover end coupling pieces protrude and extend from both ends of the handle cover to be perpendicular to other portions. A luminous body or jewel may be used as the decoration.