Decorative tree lamp with detachable electrical connection to base

A decorative tree lamp, comprising:

• a lamp housing, configured to have a tree shape, an accommodating cavity being formed inside the lamp housing, a mounting part being formed at a lower end of the lamp housing, and electric contacts being also arranged at the lower end of the lamp housing;
• a light-emitting body, arranged in the accommodating cavity and electrically connected to the electric contacts;
• and
• a base, a power supply unit being arranged inside the base, a mounting groove being formed in the top surface of the base, conductive structures being arranged in the mounting groove, and the conductive structures being electrically connected to the power supply unit,
• wherein the mounting part is mounted at the mounting groove in a detachable manner, and in a case that the mounting part is mounted at the mounting groove, the electric contacts are in contact with the conductive structures;
• wherein the mounting part is of a columnar structure, the mounting groove is a round groove, and the mounting part is capable of being connected to the base in a manner of rotating relative to the mounting groove;
• wherein the electric contacts are arranged at the bottom of the mounting part, the number of the electric contacts is two, and the distances from the two electric contacts to the center of the columnar structure are not equal;
• the conductive structures comprise a first conductive sheet and a second conductive sheet, the first conductive sheet and the second conductive sheet are located on a bottom wall of the mounting groove, and the first conductive sheet and the second conductive sheet are configured to be in contact with different electric contacts;
• and
• the first conductive sheet is a disk shaped conductive sheet, the second conductive sheet is an annular conductive sheet and surrounds the first conductive sheet, and a gap is formed between the first conductive sheet and the second conductive sheet;
• wherein both of the two electric contacts deviate from the center of the columnar structure, and one of the two electric contacts is closer to the center of the columnar structure than the other;
• wherein the electric contact closer to the center of the columnar structure is configured to be in contact with the round conductive sheet;
• and wherein the electric contact farther from the center of the columnar structure is configured to be in contact with the annular conductive sheet.