Branch-Trunk LED String Light Structure for Easier Installation

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Solution Overview

Problem

Existing decorative string lights have a complex structure, large size, high weight, and poor aesthetic and decorative effects, making them difficult to install and costly.

Innovation Solution

An LED string light with a branch-trunk structure featuring a power supply assembly, multiple wire groups, and a light source assembly supported by a branch-trunk structure, using single-core metal wires with insulating varnish and an insulating sleeve, and optionally including a support member and controller for intelligent control.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Stability of the object's composition

If four or more wires are used to form the string light wire, then the string light can be structurally stable, but the structure becomes complex and the cost increases

Engineering Contradiction:
Improvestructural stabilityVSAvoidstructure complexity
Core Design Contradiction:
Stability of the object's compositionVSDevice complexity

Solution Approach 1:

The patent combines multiple wires into a single integrated string light wire structure. Specifically, it integrates the light source, wiring, and support functions into one unified component that can be directly wrapped around trees or branches, eliminating the need for separate multiple-wire assemblies while maintaining structural stability.

Inventive Principle:
Principle #5Merging (Combining)

2Stability of the object's composition

If four or more wires are used to form the string light wire, then the string light can be structurally stable, but the manufacturing cost increases

Engineering Contradiction:
Improvestructural stabilityVSAvoidmanufacturing cost
Core Design Contradiction:
Stability of the object's compositionVSEase of manufacture

Solution Approach 1:

The patent combines multiple wires into a single integrated string light wire structure. Specifically, it integrates the light source, wiring, and support functions into one unified component that can be directly wrapped around trees or branches, eliminating the need for separate multiple-wire assemblies while maintaining structural stability.

Inventive Principle:
Principle #5Merging (Combining)

3Stability of the object's composition

If the string light wire is made with multiple wires, then the string light can be structurally stable, but the size and weight increase

Engineering Contradiction:
Improvestructural stabilityVSAvoidstring light weight
Core Design Contradiction:
Stability of the object's compositionVSWeight of moving object

Solution Approach 1:

The patent combines multiple wires into a single integrated string light wire structure. Specifically, it integrates the light source, wiring, and support functions into one unified component that can be directly wrapped around trees or branches, eliminating the need for separate multiple-wire assemblies while maintaining structural stability.

Inventive Principle:
Principle #5Merging (Combining)

4Stability of the object's composition

If the string light wire is made with multiple wires, then the string light can be structurally stable, but the aesthetic effect deteriorates

Engineering Contradiction:
Improvestructural stabilityVSAvoidaesthetic effect
Core Design Contradiction:
Stability of the object's compositionVSShape

Solution Approach 1:

The patent combines multiple wires into a single integrated string light wire structure. Specifically, it integrates the light source, wiring, and support functions into one unified component that can be directly wrapped around trees or branches, eliminating the need for separate multiple-wire assemblies while maintaining structural stability.

Inventive Principle:
Principle #5Merging (Combining)

5Stability of the object's composition

If the string light wire is made with multiple wires, then the string light can be structurally stable, but the installation difficulty increases

Engineering Contradiction:
Improvestructural stabilityVSAvoidinstallation ease
Core Design Contradiction:
Stability of the object's compositionVSEase of operation

Solution Approach 1:

The patent combines multiple wires into a single integrated string light wire structure. Specifically, it integrates the light source, wiring, and support functions into one unified component that can be directly wrapped around trees or branches, eliminating the need for separate multiple-wire assemblies while maintaining structural stability.

Inventive Principle:
Principle #5Merging (Combining)

Applied Scientific Principles

This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.

Function Achieved in This Case

The structure is simplified, reducing size and weight, improving aesthetics, and enabling easier installation and lower manufacturing costs while allowing for intelligent lighting control.

Implementation Method 1

each wire group is at least provided with a wire a and a wire b which are arranged abreast, the wire a and the wire b are provided with insulating protection layers

Methodology Applied
Scientific EffectElectrical insulation: Dielectric

Implementation Method 2

an LED light source packaged in the columnar transparent light bead

Methodology Applied
Scientific EffectLight-emitting diode effect: Light Emitting Diode

Data Source

PatentEP4675153A1LED string light with branch-trunk structure
Publication Date: 2026.01.07 SHANGYOU JIAYI LIGHTING PROD CO LTD
  • EP4675153A1 patent drawingFigure 1
  • EP4675153A1 patent drawingFigure 2
  • EP4675153A1 patent drawingFigure 3

AI summary

The disclosure relates to the technical field of lights, and discloses 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 has 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.