Modular LED Street Light with Interchangeable Radiator Design

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Solution Overview

Problem

Existing LED street lights have a one-piece structure that requires separate molds for different power levels, leading to high production costs and inadequate heat dissipation due to the radiator's placement within the back shell.

Innovation Solution

A modular LED street light design featuring elongated aluminum supporting pipes with bending parts, allowing for adjustable LED light source modules with gaps for improved heat dissipation and easy power serialization, along with a radiator structure that enhances heat dissipation efficiency and prevents dust accumulation.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Strength

If a one-piece structure is used for LED street lights, then the structural strength is sufficient, but the manufacturing cost increases due to requiring separate molds for different power levels

Engineering Contradiction:

Improvestructural strengthVSAvoidmanufacturing cost

Core Design Contradiction:

StrengthVSEase of manufacture

Solution Approach 1:

The street light is divided into modular components: a standardized housing structure and interchangeable LED light source modules. The housing remains consistent across different power levels while only the LED modules vary, eliminating the need for separate housing molds for each power level and reducing manufacturing costs.

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

A universal housing design is created that can accommodate multiple LED light source modules of different power levels. The standardized mounting structure and interface allow the same housing to serve multiple functions across different product variants, reducing the number of unique molds required.

Inventive Principle:

Principle #6Universality (Multi-functionality)

2Device complexity

If the radiator is positioned in the back shell, then the structural compactness is maintained, but the heat dissipation effect is dissatisfactory

Engineering Contradiction:

Improvestructural compactnessVSAvoidheat dissipation effect

Core Design Contradiction:

Device complexityVSTemperature

Solution Approach 1:

The radiator is extracted from the confined back shell space and repositioned to extend outward from the housing. This allows the radiator to occupy more external space for improved heat dissipation surface area while maintaining a compact overall housing structure.

Inventive Principle:

Principle #2Taking out (Extraction)

Solution Approach 2:

The radiator is designed to extend in multiple spatial dimensions from the housing rather than being confined to a single plane within the back shell. This three-dimensional arrangement maximizes heat dissipation surface area while maintaining structural compactness.

Inventive Principle:

Principle #17Another dimension (Dimensionality change)

3Volume of moving object

If LED light source modules are positioned close together, then the device compactness is improved, but the heat dissipation is insufficient

Engineering Contradiction:

Improvedevice compactnessVSAvoidheat dissipation

Core Design Contradiction:

Volume of moving objectVSTemperature

Solution Approach 1:

Different spacing is applied to different LED modules based on their thermal characteristics. Modules with higher power output are positioned with greater spacing and associated with larger radiator sections, while lower power modules can be positioned closer together, optimizing both compactness and heat dissipation locally.

Inventive Principle:

Principle #3Local quality

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 modular design reduces manufacturing and maintenance costs, improves heat dissipation, and allows for flexible power adjustments while maintaining structural strength and water resistance.

Implementation Method 1

a radiator structure that enhances heat dissipation efficiency

Methodology Applied

Scientific EffectThermal radiation: Thermal Radiation

Implementation Method 2

gaps for improved heat dissipation

Methodology Applied

Scientific EffectConvection: Convection

Data Source

PatentUS9605819B2Street light with modular LED light source

Publication Date: 2017.03.28 HUIZHOU ARRLUX OPTOELECTRONICS

AI summary

The present invention relates to a modular LED street light including an electrical chamber, a lamp arm, two supporting pipes, an end cap and a plurality of LED light source modules. The LED light source modules are fixed between the two supporting pipes. Each LED light source module includes a circuit board and a radiator. The radiator includes a first plate, two second plates extending from two sides of the first plate and a third plate connected to the two second plates. The radiator has a large area of heat dissipation. When it is required to increase or decrease the number of the LED light source modules for the purpose of increasing or reducing the power of the LED street light, all that is needed is exchanging with lengthened or shortened supporting pipes, thus enabling a power seriation of the street light at very low costs.