Bulb adaptor

A bulb adaptor, comprising a mounting housing, a rotating mechanism, a first connecting member and a second connecting member with cavities inside, wherein

• the mounting housing has a cylindrical structure and is provided with a first opening and a second opening oppositely disposed, and an inner wall of the mounting housing is provided with threads at the first opening;
• the first connecting member comprises a convex first live contact part and two first metal connecting parts, one of the first metal connecting parts being electrically connected with the threads, and the other of the first metal connecting parts being electrically connected with the first live contact part;
• the second connecting member comprises a convex second live contact part, a neutral contact part and two second metal connecting parts, the two second metal connecting parts being electrically connected with the second live contact part and the neutral contact part respectively, and the second connecting member being arranged crosswise with the first connecting member, so that the first live contact part is staggered with both the second live contact part and the neutral contact part;
• and
• the rotating mechanism comprises a rotating member and a convex part fixed to the rotating member, the convex part having a first position and a second position, the first position being where the convex part is in electrical contact with the two first metal connecting parts, and the second position being where the convex part is in electrical contact with the two second metal connecting parts;
• the rotating member being slidably connected with the mounting housing, so that the rotating member can rotate along a circumferential direction of the mounting housing, and the convex part moves between the first position and the second position.