Patent ID: 9704702
Date: 2017-07-11
CPC Classifications: H01J,H05B

Claim:
1. A flash light source device comprising: a flash lamp including a sealed container having a substantially tubular shape with a central axis direction along a predetermined direction and having a discharge gas enclosed therein, a cathode and an anode arranged in juxtaposition in the sealed container to induce arc discharge, and first and second lead pins projecting from one end face of the sealed container in the predetermined direction and electrically connected to the cathode and to the anode, respectively; a wiring board having a principal surface and a back surface intersecting with the predetermined direction, and to which the first and second lead pins of the flash lamp arranged opposite to the principal surface are fixed in an electrically conductive manner; a power feeding unit for charge and discharge of an electric current to be supplied to the flash lamp; and a heat radiator plate of metal thermally coupled to the sealed container and arranged opposite to the wiring board, wherein the power feeding unit includes one or a plurality of chip capacitors surface-mounted on the wiring board, the sealed container has a light transmission window disposed on the other end face of the sealed container, the heat radiator plate has a through hole in which the light transmission window side of the sealed container is inserted, and at least part of a side tube portion of the sealed container is surrounded by an inner surface of the through hole so that the sealed container is thermally coupled to the heat radiator plate, and the heat radiator plate is arranged separate from the wiring board via a space, and the one end face side of the sealed container is arranged in the space and arranged separate from the wiring board.