Lighting Device With Segmented Heat-Dissipating Units

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Solution Overview

Problem

Conventional LED lighting systems face challenges in heat dissipation, particularly in high-luminous flux applications, which can degrade performance and reduce the lifetime of LED modules.

Innovation Solution

The solution involves a lighting device with two heat-dissipating units heat-conductively connected to respective lighting units and a driver, utilizing a convex-concave mating structure and waterproof glue for improved sealing and heat dissipation, along with separated side lighting and heat-dissipating modules for enhanced assembly efficiency.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Illumination intensity

If high-luminous flux LED lighting systems are used to provide greater illumination intensity, then the illumination performance is improved, but the heat generation increases which deteriorates LED performance and reduces lifetime

Engineering Contradiction:

Improveillumination intensityVSAvoidheat generation

Core Design Contradiction:

Illumination intensityVSTemperature

Solution Approach 1:

The lighting device is divided into multiple independent lighting units (first lighting unit and second lighting unit), each with its own dedicated heat-dissipating unit. This segmentation allows each lighting unit to be optimized independently for heat dissipation while maintaining high luminous flux output, preventing heat accumulation that would otherwise degrade overall system performance and lifetime.

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

Heat-dissipating units are introduced as intermediary components between the lighting units and the environment. These units serve as thermal mediators that conduct heat away from the LED light engines through thermal conduction, preventing the harmful thermal effects of high-luminous flux operation while preserving the illumination performance.

Inventive Principle:

Principle #24Intermediary (Mediator)

2Ease of manufacture

If conventional connection methods are used between lighting device components, then the assembly process is simple, but the sealing effect is insufficient and waterproofing cannot be achieved

Engineering Contradiction:

Improveassembly simplicityVSAvoidsealing effect

Core Design Contradiction:

Ease of manufactureVSReliability

Solution Approach 1:

The connection and sealing functions are merged into a single integrated solution. The heat-dissipating units and housing components feature integrated connection structures that simultaneously provide mechanical attachment and waterproof sealing through convex-concave mating surfaces, eliminating the need for separate sealing components while achieving IP65 protection.

Inventive Principle:

Principle #5Merging (Combining)

Solution Approach 2:

Traditional mechanical sealing methods (such as separate gaskets or O-rings) are replaced with a positive fit convex-concave mating structure. This geometric interlocking mechanism provides both mechanical strength and waterproof sealing through precise surface contact, achieving reliable sealing without complex additional sealing components.

Inventive Principle:

Principle #28Mechanics substitution (Replace mechanical system)

3Productivity

If separate side lighting and heat-dissipating modules are used, then assembly efficiency and productivity are improved, but the device complexity increases

Engineering Contradiction:

Improveassembly efficiencyVSAvoidmodule separation

Core Design Contradiction:

ProductivityVSDevice complexity

Solution Approach 1:

The lighting device is segmented into modular units (side lighting modules with integrated heat-dissipating modules) that can be manufactured and assembled independently. This modularity enables parallel production and simplified assembly procedures while maintaining manageable complexity through standardized connection interfaces.

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

The side lighting modules are designed with universal functionality, integrating both lighting and heat-dissipation functions in a single modular unit. This multi-functionality reduces the number of separate components that need to be assembled, actually simplifying the overall assembly process despite the increased functional integration within each module.

Inventive Principle:

Principle #6Universality (Multi-functionality)

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

This configuration significantly enhances heat dissipation, improves the performance and lifetime of the lighting device, and achieves a waterproofing level of IP 65, while simplifying the assembly process and increasing productivity.

Implementation Method 1

a first heat-dissipating unit heat-conductively connected to the first lighting device, a second heat-dissipating unit heat-conductively connected to the second lighting unit

Methodology Applied

Scientific EffectThermal conduction: Conduction (thermal)

Data Source

PatentUS10598315B2Lighting device and method of assembling a lighting device

Publication Date: 2020.03.24 LEDVANCE GMBH

AI summary

A lighting device is provided, which includes a first lighting unit, a heat-dissipating unit heat-conductively connected to the first lighting unit; a second lighting unit, a second heat-dissipating unit heat-conductively connected to the second lighting unit; and a driver electrically connected with the first lighting unit and the second lighting unit. Furthermore, a method of assembling a lighting device is provided.