The present invention provides the lighting apparatus cable that allows it to easily attach the lighting module and enables it to improve the productivity. A flat cable used in a lighting apparatus having a plurality of lighting modules disposed in series, for connecting the lighting modules in such a manner that colors and/or luminous intensities of emitted lights of the lighting modules can be controlled, the flat cable comprising: at least four conductors disposed in parallel which include two signal conductors disposed at both sides of the cable and two power feeding conductors; a sheath member covering the at least four conductors to integrate; and notches formed on both sides of the cable so as to cut the signal conductors.