# US 12,760,879 B2 · LED string light with branch-trunk structure > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 12,760,879 B2 - Document ID: US12760879B2 - Status: Granted - Kind: B2 - Application number: 19/338,666 - Filed: 2025-09-24 - Published: 2026-07-30 - Granted: 2026-10-13 - Earliest claimed: 2025-01-24 - Assignees: Shangyou Jiayi Lighting Product Co., Ltd. - Applicants: Shangyou Jiayi Lighting Product Co., Ltd. - Inventors: Yaowen He - Web page: https://patentgrep.com/patent/US12760879B2 ## CPC - F21V 23/001: {the elements being electrical wires or cables} - F21K 9/66: Details of globes or covers forming part of the light source - F21S 4/10: with light sources attached to loose electric cables, e.g. Christmas tree lights - F21V 23/008: {the casing being outside the housing of the lighting device} - F21V 23/02: the elements being transformers, impedances {or power supply units, e.g. a transformer with a rectifier} - F21V 23/04: the elements being switches (safety devices F21V25/00) - F21V 23/06: the elements being coupling devices {, e.g. connectors} - F21Y 2115/10: Light-emitting diodes [LED] - F21V: FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR - F21K: NON-ELECTRIC LIGHT SOURCES USING LUMINESCENCE; LIGHT SOURCES USING ELECTROCHEMILUMINESCENCE; LIGHT SOURCES USING CHARGES OF COMBUSTIBLE MATERIAL; LIGHT SOURCES USING SEMICONDUCTOR DEVICES AS LIGHT-GENERATING ELEMENTS; LIGHT SOURCES NOT OTHERWISE PROVIDED FOR - F21S: NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS - F21Y: INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO THE FORM OR THE KIND OF THE LIGHT SOURCES OR OF THE COLOUR OF THE LIGHT EMITTED ## Abstract Some embodiments of the disclosure relate to the technical field of lights and disclose an LED string light with a branch-trunk structure, including a power supply assembly and multiple wire groups. A light source assembly is arranged between every two wire groups, and an end of the first wire group is electrically connected to the power supply assembly; every two wire groups are at least partially bent and combined to form a branch-trunk structure used for supporting the light source assembly. The disclosure may have the following advantages: 1, the string light in this technical solution is small in overall size, low in weight, easier to install and low in installation difficulty; 2, the light is mainly formed by columnar transparent light beads, such that the internal structure of the light is effectively simplified, and the use cost of the string light is reduced. ## Claims ### Claim 1 An LED string light with a branch-trunk structure, comprising a power supply assembly (1) and a controller (7), wherein: the LED string light further comprises multiple wire groups (2), a light source assembly (3) is arranged between every two said wire groups (2), and an end of a first wire group (2) is electrically connected to the power supply assembly (1); every two said wire groups (2) are at least partially bent and combined to form a branch-trunk structure (4), wherein every two adjacent wire groups (2) are partially intertwisted into a braided shape that supports the light source assembly (3); the LED string light further comprises an insulating sleeve (5), and at least part of the insulating sleeve (5) is disposed around the branch-trunk structure (4); the light source assembly (3) comprises a columnar transparent light bead (31), a first pin (32), a second pin (33) and an LED light source (35) packaged in the columnar transparent light bead (31), and the first pin (32) and the second pin (33) are arranged at a same end of the columnar transparent light bead (31) and electrically connected to the LED light source (35); and each said wire group (2) is at least provided with a wire a (21) and a wire b (22) which are arranged abreast, the wire a (21) and the wire b (22) are provided with insulating protection layers (23), at least one end of the wire a (21) is connected to the first pin (32), and at least one end of the wire b (22) is connected to the second pin (33); the controller (7) comprises a shell (71) and a PCB (73), and the PCB (73) is arranged inside the shell (71); the controller (7) is connected to the power supply assembly (1); one end of the first transmission line (74) and one end of the second transmission line (75) are electrically connected to the PCB (73), the other end of the first transmission line (74) is electrically connected to the wire a (21), and the other end of the second transmission line (75) is electrically connected to the wire b (22). ### Claim 2 (depends on 1) The LED string light with a branch-trunk structure according to claim 1, wherein a part of the insulating sleeve (5) is disposed around a bottom of the columnar transparent light bead (31). ### Claim 3 (depends on 1) The LED string light with a branch-trunk structure according to claim 1, further comprising a support member (6), wherein the support member (6) is mounted between the first pin (32) and the second pin (33). ### Claim 4 (depends on 3) The LED string light with a branch-trunk structure according to claim 3, wherein a recess (34) is formed in a bottom end of the columnar transparent light bead (31), and a top end of the support member (6) is mounted in the recess (34). ### Claim 5 (depends on 1) The LED string light with a branch-trunk structure according to claim 1, wherein a support member (6) is arranged on the columnar transparent light bead (31), and the support member (6) and the columnar transparent light bead (31) are formed integrally. ### Claim 6 (depends on 1) The LED string light with a branch-trunk structure according to claim 1, wherein another portion of the wire a (21) and another portion of the wire b (22) are intertwisted to form a trunk of the branch-trunk structure. ### Claim 7 (depends on 1) The LED string light with a branch-trunk structure according to claim 1, wherein the controller (7) is arranged between the power supply assembly (1) and wire groups (2). ### Claim 8 (depends on 1) The LED string light with a branch-trunk structure according to claim 1, wherein insulation tubes (77) are disposed around the first transmission line (74) and the second transmission line (75). ### Claim 9 (depends on 1) The LED string light with a branch-trunk structure according to claim 1, the power supply assembly (1) is a connector or battery case.