Rotatable Driver Box Heat Dissipation for LED Lighting

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Solution Overview

Problem

Conventional lighting apparatuses face challenges in heat dissipation, which can lead to fire accidents and inefficiencies, particularly with the high cost and limited flexibility of early LED lighting solutions.

Innovation Solution

A lighting apparatus design featuring a driver box with a rotatable top cover, metal rectangular plates for enhanced heat dissipation, a thermal conductive path, and an optional fan for air circulation, along with a conductive path module for efficient power distribution and signal coordination among driver plates.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Duration of action of stationary object

If LED lighting is used for energy efficiency and longer lifetime, then energy consumption is reduced and lifetime is extended, but heat dissipation becomes insufficient leading to fire accidents

Engineering Contradiction:
Improvelighting device lifetimeVSAvoidheat accumulation causing fire risk
Core Design Contradiction:
Duration of action of stationary objectVSObject-affected harmful factors

Solution Approach 1:

The patent converts the harmful heat generated by LED lighting into a beneficial feature by designing a heat dissipation structure where the driver box serves as a heat sink. The metal housing and internal heat dissipation fins capture and dissipate heat that would otherwise accumulate and cause fire hazards, transforming the harmful thermal energy into a controlled heat management system.

Inventive Principle:
Principle #22Blessing in disguise (Convert harm into benefit)

Solution Approach 2:

The patent segments the lighting device into distinct functional modules: a driver box for heat management and power supply, and a lighting module for illumination. This segmentation allows the driver box to be specifically optimized for heat dissipation while the lighting module focuses on light output, resolving the contradiction between extended lifetime and heat-related fire risks.

Inventive Principle:
Principle #1Segmentation

2Strength

If early LED lighting with metal cases is used, then structural strength is improved, but heat dissipation efficiency is insufficient

Engineering Contradiction:
Improvehousing structural strengthVSAvoidheat dissipation efficiency
Core Design Contradiction:
StrengthVSTemperature

Solution Approach 1:

The patent employs composite material strategies by combining metal housing (for strength) with thermally conductive materials and heat dissipation fins (for thermal management). The driver box housing integrates structural metal components with heat dissipation elements, creating a composite structure that simultaneously achieves high strength and efficient heat dissipation.

Inventive Principle:
Principle #40Composite materials

Solution Approach 2:

The patent adds dimensional complexity to the heat dissipation system by incorporating three-dimensional heat dissipation fins and multi-directional thermal pathways within the driver box. This dimensional expansion transforms the simple metal case into a sophisticated heat management structure that maintains structural integrity while dramatically improving heat dissipation surface area and efficiency.

Inventive Principle:
Principle #17Another dimension (Dimensionality change)

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 solution effectively manages heat dissipation, reduces the risk of fire accidents, and enhances the flexibility and reliability of LED lighting systems while maintaining cost-effectiveness.

Implementation Method 1

a thermal conductive path connected to the surrounding wall for carrying heat of the light module to the surrounding wall

Methodology Applied
Scientific EffectThermal conduction: Conduction (thermal)

Implementation Method 2

The fan receives power from the driver module for moving air in the container space of the driver box

Methodology Applied
Scientific EffectForced convection: Forced Convection

Data Source

PatentUS11209151B2Lighting apparatus
Publication Date: 2021.12.28 LEELEDS LIGHTING XIAMEN
  • US11209151B2 patent drawing
  • US11209151B2 patent drawing
  • US11209151B2 patent drawing

AI summary

A lighting apparatus includes a driver box, a driver module and a light module. The driver box includes a surrounding wall and a top cover. The surrounding wall has multiple rectangular plates. A hinge structure is disposed for connecting the surrounding wall and the top cover so that the top cover is rotatable with respect to the surrounding wall to expose a container space enclosed by the surrounding wall. An elastic clip has a first clip end fixed to the surrounding wall and has a second clip end for elastically deformed to either lock or release the top cover to rotate with respect to the surrounding wall. The driver module is disposed in the container space of the surrounding wall. The driver module is connected to a power wire via a wiring hole disposed on the surrounding wall. The light module receives a driving current from the driver module.