Lampholder and luminaire

A lampholder for mounting a straight tube type lamp by inserting a pair of L-shaped lamp pins provided at one end of the straight tube type lamp and including a pair of leg portions and projecting portions extending outward from distal ends of the leg portions so as to be away from each other, and rotating the same comprising:

• a lampholder body including:
• a front portion facing the straight tube type lamp when the straight tube type lamp is mounted;
• an insertion port provided on a surface intersecting the front portion and allow insertion of the pair of lamp pins;
• an opening portion provided in the front portion so as to communicate with the insertion port and configured to allow the pair of leg portions of the lamp pin to rotate;
• and a wall portion provided at an edge portion of the opening portion opposing the insertion port and configured to restrict insertion of the lamp pins into the opening portion in a state in which the straight tube type lamp is separated from the front portion with respect to a predetermined mounting position;
• a rotating member disposed in the lampholder body and configured to rotate with respect to the lampholder body in association with the rotation of the straight tube type lamp;
• a pair of terminals disposed in the lampholder body and electrically connected respectively with the pair of lamp pins.