Decorative tree lamp with detachable base and detachable branches

A decorative tree lamp, comprising:

• a lamp housing, with an accommodating cavity inside;
• a light-emitting body, which is installed inside or outside the lamp housing;
• a base, which is detachably connected to the lamp housing;
• artificial branches, detachably installed on the side wall of the lamp housing and combined with the lamp housing to resemble a shape of a tree;
• wherein the bottom of the lamp housing is provided with a first mounting portion, and the base is correspondingly provided with a second mounting portion, wherein the first mounting portion and the second mounting portion are detachably connected through a mechanical connection structure;
• the first mounting portion is provided with a first conductive structure, and the second mounting portion is provided with a second conductive structure;
• wherein when the first mounting portion is connected to the second mounting portion, the first conductive structure, and the second conductive structure are electrically connected, and the light-emitting body is energized;
• wherein the first conductive structure comprises a plurality of contacts, and the second conductive structure comprises a circular contact plate and an annular contact plate surrounding the circular contact plate, a first contact corresponds to the circular contact plate, a second contact corresponds to the annular contact plate, and the first conductive structure is capable of rotating around a rotation axis relative to the second conductive structure, such that the first mounting portion is capable of being rotationally matched with the second mounting portion, wherein a common center of the annular contact plate and the circular contact plate is not on the rotation axis.