Light-Emitting Module Fastening Structure for Moisture Sealing
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Solution Overview
Problem
Conventional light emitting modules face challenges in maintaining moisture resistance and uniformity of application, leading to increased size and weight, which limits their versatility and efficiency.
Innovation Solution
A light emitting module design featuring a lens portion, substrate, and fastening portion with uniform height and robust coupling mechanisms, including adhesive layers and sealing portions to prevent moisture ingress and ensure universal application.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If conventional light emitting modules are designed with traditional fastening structures, then assembly is simplified, but moisture resistance and sealing effectiveness deteriorate
Solution Approach 1:
The fastening portion integrates multiple functions into a single component: it provides mechanical fastening through the first and second fastening holes while simultaneously forming a sealing portion that prevents moisture ingress. The adhesive layer is applied to the sealing portion to enhance the sealing effect, combining fastening and sealing functions in one integrated structure rather than using separate components.
Solution Approach 2:
The fastening portion is divided into distinct functional regions: an upper portion with a first fastening hole for lens attachment, a lower portion with a second fastening hole for substrate attachment, and a sealing portion that extends between them. This segmentation allows each region to perform its specific function optimally while maintaining overall integration.
2Reliability
If light emitting modules use larger sizes to improve moisture protection, then moisture resistance improves, but weight and size limitations are exceeded
Solution Approach 1:
The sealing portion is formed as a thin, flexible structure that extends from the upper portion to the lower portion of the fastening portion. This thin film structure provides effective moisture sealing without adding significant weight or volume to the module, allowing robust moisture protection while maintaining lightweight characteristics.
Solution Approach 2:
The sealing portion extends in the vertical dimension between the upper and lower portions of the fastening portion, creating a three-dimensional sealing path. This vertical extension provides effective moisture blocking without increasing the horizontal footprint or overall module size, maintaining compact dimensions while improving moisture protection.
3Adaptability or versatility
If uniform substrate height is maintained across all regions, then manufacturing simplicity and universal application improve, but fastening robustness may be compromised
Solution Approach 1:
The substrate is designed with different local characteristics: regions with fastening portions have enhanced structural features to accommodate the fastening holes and provide robust attachment points, while other regions maintain uniform height for universal application. The fastening portions are strategically positioned to provide localized strength enhancement without affecting the overall uniformity needed for universal mounting.
Solution Approach 2:
The substrate design allows the same substrate structure to serve multiple functions: it provides uniform mounting surfaces for universal application across different lighting scenarios, while simultaneously incorporating fastening portions that provide robust mechanical attachment. The consistent height across regions enables the substrate to be used in various configurations without requiring custom modifications.
Data Source
AI summary
A light emitting module is provided to comprise: a light source unit including at least one light-emitting element; a lens unit arranged on the light source unit and including a first fastening hole; a substrate having an upper and lower surfaces and including a second fastening hole, the light source unit arranged on the upper surface; and a fastening unit arranged inside of the first fastening hole and the second fastening hole, wherein the first fastening hole and the second fastening hole are arranged to correspond to each other. The substrate has a height in a vertical direction from the upper surface to the lower surface, and a height of a region of the substrate where the fastening portion is disposed and a height of a region of the substrate where the fastening portion is not disposed are same as the height of the substrate.