End Cap Assembly with Isolation Module for LED Thermal Management
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Solution Overview
Problem
Conventional LED lamps face issues with reduced luminous efficiency and shortened lifespan due to volatile organic compounds (VOC) deposition on high-temperature LED chips and inadequate heat dissipation of driving modules, especially for high-power LEDs.
Innovation Solution
An end cap assembly is designed with an isolation module, mounting module, conductive contact, and potted material, where the driving module is accommodated in the end cap interior chamber and electrically connected, surrounded by a heat-conductive potted material to enhance heat dissipation and prevent VOC deposition.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the driving module is disposed inside the end cap, then the LED chip is protected from VOC deposition, but the heat generated by the driving module cannot be dissipated
Solution Approach 1:
The end cap assembly is divided into distinct functional zones: a first chamber housing the LED chip and a second chamber housing the driving module, separated by an isolation module. This segmentation allows the LED chip to be protected from heat while the driving module has dedicated space for heat dissipation, resolving the contradiction between protection and thermal management.
Solution Approach 2:
An isolation module is introduced as an intermediary component between the LED chip and the driving module. This isolation module includes a first opening that allows heat to pass through from the driving module chamber to the external environment, while protecting the LED chip chamber from direct heat exposure. The intermediary structure enables both protection and heat dissipation simultaneously.
2Device complexity
If the LED light source and driving module are directly disposed inside the glass bulb, then the lamp structure is simplified, but VOC particles deposit on the LED chip reducing luminous efficiency
Solution Approach 1:
The lamp is segmented into a glass bulb portion containing the LED chip and an end cap assembly containing the driving module. This segmentation physically separates the LED chip from the driving module, preventing VOC particles generated by the driving module from contacting and depositing on the LED chip, thus maintaining luminous efficiency while keeping the overall structure relatively simple.
Solution Approach 2:
The driving module is extracted from the glass bulb interior and placed in the end cap assembly. This extraction removes the source of VOC particles from the vicinity of the LED chip, eliminating the problem of VOC deposition on the LED chip surface while maintaining a compact lamp structure through the integrated end cap design.
3Reliability
If the driving module is disposed inside the end cap, then the LED chip is isolated from harmful factors, but the life of the driving module is reduced due to poor heat dissipation
Solution Approach 1:
The end cap assembly is segmented into separate chambers: one for the LED chip and another for the driving module. The isolation module with its first opening creates a thermal pathway that allows heat from the driving module to dissipate to the external environment, preventing heat accumulation that would reduce the driving module's operational life, while simultaneously protecting the LED chip from this heat.
Solution Approach 2:
The isolation module acts as a thermal intermediary, allowing heat to pass through its first opening from the driving module chamber to the external environment. This intermediary structure provides a controlled thermal pathway that extends the driving module's life by enabling heat dissipation, while maintaining the protective isolation of the LED chip chamber.
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 improves heat dissipation and reduces VOC impact, leading to increased LED chip lifespan and efficiency while maintaining the structural integrity and aesthetic appeal of the lamp.
Implementation Method 1
surrounded by a heat-conductive potted material to enhance heat dissipation
Data Source
AI summary
The present disclosure provides an end cap assembly, a lamp using the end cap assembly and a method of assembling the lamp. The end cap assembly includes an end cap, an isolation module, a mounting module, a conductive contact, a driving module and a potted material. The end cap defines therein an end cap interior chamber. The isolation module comprises a first end coupled to the end cap and a second end having a first opening. The mounting module is coupled to the isolation module and at least partially is accommodated in the first opening, and the mounting module has a second opening. The conductive contact is at least partially accommodated in the second opening. The driving module is at least partially accommodated in the end cap interior chamber. The potted material is filled in the end cap interior chamber and surrounding at least part of the driving module.