Patent ID: 8107033

Claim:
A backlight device, comprising: a chassis that stores, in a row, a plurality of light sources constituted by a straight-tube type external electrode fluorescent tube having electrodes at both ends; a light source lighting circuit board that is included on a rear face of the chassis; and a storing portion that stores a conductive holding portion, the conductive holding portion holding each external electrode, and is attached to the chassis; wherein the storing portion is attached to the chassis so that the external electrodes form a state of being electrically connected to the light source lighting circuit board included on the rear face of the chassis, the light source lighting circuit board comprises conduction structure of connecting electrodes in one side of two light sources of the light sources that are arranged in a row, the conduction structure is included on a face opposite to a face where a wiring pattern for supplying electric power to the light sources from the light source lighting circuit board is included, the conduction structure is formed in a state of passing through a lower face of electric power supplying structure that supplies electric power to the light sources, and the conduction structure electrically connects electrodes of adjacent fluorescent tubes to each other.