In a balancer board for a back light device, a plurality of shunt coils configured to transfer power from an inverter to a plurality of fluorescent tubes arrayed in a line are arrayed in a line in a direction which is the same as the direction in which the fluorescent tubes are arrayed, and respective patterns formed on front and rear surfaces of the balancer board so as to supply the power from the inverter to each of the plurality of shunt coils are formed such that the pattern formed on one surface is located apart from the pattern formed on the other surface with a predetermined distance left therebetween while mutually intersecting three-dimensionally in respective planes.