Photoreceptor mounting base and lamp

A photoreceptor mounting base, comprising:

• a housing, provided with a receiving cavity and an opening that communicates with the receiving cavity;
• a rotation member, received in the receiving cavity, rotatably connected to the housing, and configured to mount a photoreceptor, wherein a part of the photoreceptor is exposed to the opening;
• and
• a key;
• wherein the housing comprises an upper cover and a support, and the support and the upper cover are enclosed to form the receiving cavity;
• the upper cover is provided with a first through hole;
• the first through hole communicates with the receiving cavity;
• and the first through hole comprises the opening;
• and
• a first through slot is disposed on the support;
• the first through slot communicates with the receiving cavity;
• the rotation member is inserted at the first through slot;
• an outer surface of the rotation member is provided with a ring-shaped protrusion;
• the ring-shaped protrusion is carried between an end face of the support and the cover;
• and the rotation member is capable of rotating with respect to the support and the upper cover;
• the support is provided with a receiving slot;
• the upper cover is provided with a second through hole;
• the key is disposed in the receiving slot and is exposed to the second through hole, wherein the key is movable along the receiving slot;
• the key is provided with a clamping slot;
• and the ring-shaped protrusion is received in the clamping slot;
• and
• when the key is in contact with the rotation member, the rotation member is fixed with respect to the support;
• and when the key is separated from the rotation member, the rotation member is rotatable with respect to the support.