Discharge lamp

A discharge lamp comprising:

• a pair of electrodes disposed so as to face each other in a single axis direction;
• a bulb that includes an arc tube and two side tubes connected to both respective ends in the single axis direction of the arc tube, the arc tube having the pair of the electrodes inside;
• two lead rods supporting the pair of the electrodes respectively;
• a support member that has no conductivity and that is inside at least one of the two side tubes to support the corresponding lead rod;
• a conductive member being inside the side tube that has the support member inside, the conductive member being in contact with the corresponding lead rod, the conductive member surrounds a circumference surface of the corresponding lead rod in all directions, wherein the conductive member contacts an end face of the support member adjacent to the arc tube;
• and
• a trigger member being outside the bulb and being disposed around an outer periphery of the conductive member.