LS Core LED Connector Metal Wire Frame Thermal Management

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Solution Overview

Problem

Current LED light fixtures face inefficiencies in heat transfer from LED chips to heat sinks due to the use of plastic substrates, which limits the mechanical and electrical connection's ability to effectively dissipate heat, affecting the light output and lifespan of LEDs.

Innovation Solution

The development of an LED light source assembly using metal wire frames and molded structures that form an LED chain with cascading power bars, allowing for efficient electrical connection and heat dissipation without the need for a printed circuit board, utilizing wire bond or flip chip technologies to connect LED chips across gaps, and incorporating molded structures for mechanical support and thermal conductivity.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Ease of manufacture

If plastic substrates are used to mechanically support and electrically connect LEDs, then ease of manufacture is improved, but heat transfer efficiency deteriorates

Engineering Contradiction:
Improveease of manufactureVSAvoidheat transfer efficiency
Core Design Contradiction:
Ease of manufactureVSTemperature

Solution Approach 1:

The patent employs composite construction by combining metal wire frames (for thermal conduction) with molded plastic structures (for mechanical support and electrical insulation). The metal wire frame acts as a thermal pathway while the plastic provides structural integrity, creating a hybrid solution that leverages the advantages of both materials to simultaneously achieve ease of manufacture and effective heat transfer.

Inventive Principle:
Principle #40Composite materials

2Temperature

If separate heat sink devices are used to dissipate heat from LED chips, then heat transfer efficiency is improved, but device complexity increases

Engineering Contradiction:
Improveheat transfer efficiencyVSAvoiddevice complexity
Core Design Contradiction:
TemperatureVSDevice complexity

Solution Approach 1:

The patent merges the heat dissipation function directly into the mechanical support structure by integrating the metal wire frame that holds the LED chips with the thermal conduction pathway. This eliminates the need for separate heat sink devices, as the same metal structure that provides mechanical support also serves as the thermal conduction medium, thereby reducing device complexity while maintaining heat transfer efficiency.

Inventive Principle:
Principle #5Merging (Combining)

3Temperature

If metal wire frames and molded structures are used instead of PCBs, then heat transfer efficiency is improved, but manufacturing precision requirements increase

Engineering Contradiction:
Improveheat transfer efficiencyVSAvoidmanufacturing precision
Core Design Contradiction:
TemperatureVSManufacturing precision

Solution Approach 1:

The patent segments the functional requirements into distinct components: the metal wire frame handles thermal conduction and electrical connection, while the molded plastic structure provides mechanical support and positioning. This segmentation allows each component to be manufactured and assembled separately, reducing the overall manufacturing precision requirements compared to a monolithic PCB structure that must simultaneously fulfill all functions.

Inventive Principle:
Principle #1Segmentation

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 enhances heat transfer efficiency, increases the reliability and durability of LED connections, and allows for wider light distribution without shadows, improving the overall performance and lifespan of LED light fixtures.

Implementation Method 1

The above has a significant limitation, the thermal transfer from the LED package to the heat sink, is going through a plastic, not the optimal way in which to efficiently transfer heat.

Methodology Applied
Scientific EffectThermal conduction: Conduction (thermal)

Implementation Method 2

An LED is an element in which electrons and holes are combined in a P-N semiconductor junction structure by application of current thereby emitting certain types of light.

Methodology Applied
Scientific EffectElectroluminescence: Electroluminescence

Data Source

PatentUS10128426B1LS core LED connector system and manufacturing method
Publication Date: 2018.11.13 ZYKIN ANDREY
  • US10128426B1 patent drawing
  • US10128426B1 patent drawing
  • US10128426B1 patent drawing

AI summary

The present invention relates to a new method, system and apparatus for light emitting diode (LED) packages. An object of the present invention is to provide an LED package having reduced components, a superior heat dissipation property and a compact structure that is easy to assemble, does not largely restrict use of conventional equipment for its manufacture, and is compatible with implementation within present illumination devices packaging.