LED Module Sealed Space Design for Moisture and Heat Management
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Solution Overview
Problem
LED lighting devices face challenges in maintaining normal operation due to susceptibility to humidity, temperature, and mechanical vibration, requiring effective waterproofing, heat dissipation, and resistance to mechanical vibration.
Innovation Solution
A light-emitting diode (LED) module is designed with a base plate, a lens component, and an annular sealing part to create a sealed space, which includes an LED element, a print circuit board, and a conducting wire, ensuring moisture protection and heat dissipation without direct bonding to the printed circuit layer, and using a gel gasket or adhesion agent for sealing and bonding.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If traditional LED assembly methods are used without sealed space, then manufacturing is simpler, but moisture ingress occurs causing poor reliability
Solution Approach 1:
The lens component is nested within the sealed space formed by the housing and base plate, creating a hierarchical structure where the lens is protected by the sealed enclosure. This nesting approach provides effective moisture protection while maintaining a compact and integrated design.
Solution Approach 2:
The annular sealing part acts as an intermediary element between the lens component and the base plate, providing the sealing function that prevents moisture ingress. This mediator component enables the sealed space configuration without requiring complex bonding to the printed circuit layer.
2Temperature
If additional cooling components are added, then heat dissipation improves, but device complexity increases
Solution Approach 1:
The base plate serves multiple functions simultaneously: it provides structural support for the LED components, acts as a heat dissipation pathway, and forms part of the sealed space structure. This multi-functionality eliminates the need for separate cooling components while maintaining effective thermal management.
Solution Approach 2:
The housing and base plate are merged into an integrated sealed structure that combines protection, heat dissipation, and structural support functions. This merging of functions reduces the number of separate components needed while achieving effective thermal management through the sealed space configuration.
3Reliability
If annular sealing part is disposed between lens component and base plate, then waterproofness improves, but manufacturing precision requirements increase
Solution Approach 1:
The annular sealing part functions as a flexible sealing element that can accommodate minor variations in manufacturing tolerances. This flexible sealing approach provides effective waterproofing while being more tolerant to positioning variations compared to rigid sealing methods.
Solution Approach 2:
The sealing part is designed as a simple, replaceable component that can be easily manufactured and installed. This approach prioritizes effective sealing over high manufacturing precision, allowing for cost-effective production with standard tolerances while maintaining reliable waterproofness.
Data Source
AI summary
A light emitting diode module and a lamp. The light emitting diode module includes: at least one light emitting diode element; a bottom plate for supporting the light emitting diode element; a lens assembly disposed on the light emitting surface side of the light emitting diode element; and an annular sealing member disposed between the lens assembly and the bottom plate, wherein the light emitting diode element is located in a sealed space formed by the lens assembly, the bottom plate, and the annular sealing member.