Light Panel Heat Transfer Line for HID Luminaire Retrofit

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Solution Overview

Problem

Retrofitting high-intensity discharge (HID) luminaires with LED lamp assemblies is challenging due to differences in heat dissipation mechanisms, making the process labor-intensive and complex, especially when trying to integrate LED heat conduction into HID luminaire housings designed for radiation-based heat expulsion.

Innovation Solution

A light panel assembly for luminaires that includes a frame, a lamp assembly, a dissipater heat sink, and a heat transfer line thermally coupling the lamp assembly to the dissipater heat sink, allowing heat generated by the lamp assembly to be dissipated to the exterior through conduction, which can be used to retrofit HID luminaires with LED lamp assemblies by converting existing HID luminaire housings.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Use of energy by moving object

If LED lamp assembly is installed in HID luminaire housing, then energy efficiency and life span are improved, but heat dissipation complexity increases due to different heat dissipation mechanisms

Engineering Contradiction:
Improveenergy efficiencyVSAvoidheat dissipation complexity
Core Design Contradiction:
Use of energy by moving objectVSDevice complexity

Solution Approach 1:

A heat transfer line is introduced as an intermediary component to bridge the lamp assembly and the heat sink. This heat transfer line conducts heat away from the LED lamp assembly to the heat sink, solving the heat dissipation challenge in LED retrofits without requiring modification of the existing HID luminaire housing structure.

Inventive Principle:
Principle #24Intermediary (Mediator)

Solution Approach 2:

The heat dissipation system is segmented into distinct components: the lamp assembly, the heat transfer line, and the heat sink. This segmentation allows each component to be optimized independently and simplifies the integration process when retrofitting LED lamps into existing HID luminaire housings.

Inventive Principle:
Principle #1Segmentation

2Illumination intensity

If entire HID luminaire is replaced with LED luminaire, then lighting performance is improved, but installation cost increases due to high up-front cost

Engineering Contradiction:
Improvelighting performanceVSAvoidinstallation cost
Core Design Contradiction:
Illumination intensityVSEase of manufacture

Solution Approach 1:

The invention extracts only the necessary components for LED operation (lamp assembly, heat sink, and heat transfer line) while leaving the existing HID luminaire housing and support structures in place. This extraction approach enables retrofitting with minimal disruption to the original installation, significantly reducing installation costs compared to complete replacement.

Inventive Principle:
Principle #2Taking out (Extraction)

3Productivity

If retrofit process is simplified, then installation time is reduced, but heat dissipation effectiveness may be compromised

Engineering Contradiction:
Improveinstallation speedVSAvoidheat dissipation effectiveness
Core Design Contradiction:
ProductivityVSTemperature

Solution Approach 1:

The heat transfer line serves as a reliable intermediary that ensures effective heat dissipation while simplifying the retrofit process. By providing a dedicated thermal conduction path from the lamp assembly to the heat sink, the system maintains heat dissipation effectiveness without requiring complex integration into the existing luminaire housing.

Inventive Principle:
Principle #24Intermediary (Mediator)

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 solution simplifies and accelerates the retrofitting process by enabling efficient heat dissipation for LED lamp assemblies within HID luminaire housings, reducing labor costs and complexity, while maintaining the existing hardware.

Implementation Method 1

The heat transfer line transfers heat generated by the lamp assembly, for example by a light element of the lamp assembly, to the dissipater heat sink by conduction

Methodology Applied
Scientific EffectThermal conduction: Conduction (thermal)

Implementation Method 2

the dissipater heat sink is exposed to an exterior side of the frame such that heat from the lamp assembly is dissipated to the exterior side of the frame by conduction through the heat transfer line and the dissipater heat sink

Methodology Applied
Scientific EffectThermal conduction: Conduction (thermal)

Data Source

PatentUS9897263B2Light panel for a luminaire
Publication Date: 2018.02.20 LEGRAND LIGHTING MFG CO
  • US9897263B2 patent drawing
  • US9897263B2 patent drawing
  • US9897263B2 patent drawing

AI summary

A light panel for a luminaire includes a frame, a lamp assembly carried by the frame, a dissipater heat sink carried by the frame, and a heat transfer line that thermally couples the lamp assembly to the dissipater heat sink. The heat transfer line transfers heat generated by the lamp assembly, for example by a light element of the lamp assembly, to the dissipater heat sink by conduction. The dissipater heat sink is exposed to an exterior side of the frame such that heat from the lamp assembly is dissipated to the exterior side of the frame by conduction through the heat transfer line and the dissipater heat sink. The light panel may form a door for a housing of a luminaire, which may be easily retrofitted to the housing.