DISCHARGE LAMP LIGHTING DEVICE

摘要

PROBLEM TO BE SOLVED: To efficiently dissipate heat of electronic components which generate a large amount of heat with a small amount of resin material, and enhance manufacturing efficiency. SOLUTION: This discharge lamp lighting device is equipped with a printed board 1; a box-shaped shell 2 housing the printed board 1 so that a bottom surface 21 is faced to the lower surface of the printed board 1 in a separated state; and a plurality of electronic components 3 mounted on the lower surface of the printed board 1, for lighting a discharge lamp. A bridge member 4 is installed in the discharge lamp lighting device. The bridge member 4 consists of a pair of plate-shaped members 41 interposed between the lower surface of the printed board 1 and the bottom surface 21 of the shell 2, and constitutes a chamber for filling a resin material 5 together with the inner surface containing the lower surface of the printed board 1 and the bottom surface 21 of the shell 2, and the resin material 5 is filled in the chamber.