Patent ID: 8686639

Claim:
A dielectric barrier discharge lamp, comprising: a discharge tube having an elongated shape and enclosing a discharge gas therein; a pair of electrodes; a pair of holding blocks adapted to hold respective end portions of the discharge tube in a longitudinal direction of the discharge tube, and a beam member which comprises a rod-shaped member extending in the longitudinal direction and, further, is coupled to the holding blocks, at its respective end portions in the longitudinal direction, wherein a portion of an outer peripheral surface of the discharge tube in the longitudinal direction of the discharge tube is defined as a light extraction area for extracting light induced in the discharge tube to an outside, and the pair of the electrodes are placed on the outer peripheral surface such that the light extraction area is positioned between the pair of the electrodes in a peripheral direction of the outer peripheral surface, wherein at least one electrode, out of the pair of the electrodes, is placed between the beam member and the outer peripheral surface of the discharge tube and is adapted to be pressed against the outer peripheral surface by the beam member coupled to the holding blocks.