# US 12,760,874 B2 · Decorative tree lamp with detachable electrical connection to base

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- Number: US 12,760,874 B2
- Document ID: US12760874B2
- Status: Granted
- Kind: B2
- Application number: 18/667,507
- Filed: 2024-05-17
- Published: 2025-10-30
- Granted: 2026-10-13
- Earliest claimed: 2024-04-26
- Applicants: Fangfang Lin
- Inventors: Fangfang Lin
- Web page: https://patentgrep.com/patent/US12760874B2

## CPC

- F21V 21/06: Bases for movable standing lamps; Fixing standards to the bases (F21V21/08 takes precedence)
- F21V 23/023: {Power supplies in a casing (F21V23/003 takes precedence)}
- F21V 23/04: the elements being switches (safety devices F21V25/00)
- F21V 23/06: the elements being coupling devices {, e.g. connectors}
- F21V 33/0028: {Decorative household equipment, e.g. plant holders or food dummies}
- F21V: FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR

## Abstract

Provided in the present application is a decorative tree lamp. The decorative tree lamp includes: a lamp housing, a light-emitting body, and a base. The lamp housing is configured to have a tree shape, an accommodating cavity is formed inside the lamp housing, a mounting part is formed at a lower end of the lamp housing, and electric contacts are also arranged at the lower end of the lamp housing; the light-emitting body is arranged in the accommodating cavity, and the light-emitting body is electrically connected to the electric contacts; a power supply unit is arranged inside the base, a mounting groove is formed in a top surface of the based, conductive structures are arranged in the mounting groove, and the conductive structures are electrically connected to the power supply unit; and the mounting part is mounted at the mounting groove in a detachable manner.

## Claims

### Claim 1

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.

### Claim 2 (depends on 1)

The decorative tree lamp according to claim 1, wherein an external thread is formed on a side wall of the mounting part; and
an internal thread is formed on an inner wall of the mounting groove, and the internal thread is matched with the external thread, so that the mounting part is capable of being connected to the base in a threaded matching manner.

### Claim 3 (depends on 1)

The decorative tree lamp according to claim 1, wherein the power supply unit comprises a battery and a circuit board, and the conductive structures and the battery are electrically connected to the circuit board.

### Claim 4 (depends on 3)

The decorative tree lamp according to claim 3, further comprising a control switch, wherein the control switch is electrically connected to the circuit board, and the control switch is connected to a circuit where the conductive structures and the battery are located so as to control the on or off of the circuit.

### Claim 5 (depends on 1)

The decorative tree lamp according to claim 1, wherein the base comprises an upper housing and a lower cover plate, the lower cover plate is connected to the upper housing in a detachable manner, the upper housing and the lower cover plate jointly define a mounting cavity, and the power supply unit is located in the mounting cavity.