Light-emitting Device Cover Locking Mechanism for Secure Assembly
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Solution Overview
Problem
Existing light-emitting devices face challenges in securely fixing a light-emitting assembly to a heat sink without using additional fastening members or adhesives, which can lead to manufacturing inefficiencies and safety issues due to the limitations of screw placement and adhesive reliability, especially with large or tube-shaped devices.
Innovation Solution
A light-emitting device design that incorporates a cover and heat sink with locking parts, where the cover's elastic bending parts engage with the heat sink to form an enclosed cavity, securely pressing the light-emitting assembly against the heat sink without additional components, utilizing geometric and mechanical principles for assembly and fixation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If fastening members such as screws are used to fix the light-emitting assembly on the heat sink, then the thermal conduct path is ensured, but the circuit layout is adversely affected and manufacturing efficiency is lowered
Solution Approach 1:
The patent removes the fastening member (screw) from the assembly by integrating the pressing function directly into the locking part of the cover. The locking part includes a pressing portion that contacts the light-emitting assembly, eliminating the need for separate fastening components and improving manufacturing efficiency while maintaining thermal contact.
Solution Approach 2:
The patent combines the locking function and pressing function into a single integrated locking part. The locking part simultaneously engages with the heat sink to secure the cover and presses the light-emitting assembly against the heat sink, merging multiple functions into one component to reduce assembly complexity.
2Reliability
If a large number of screws are used to fix the light-emitting assembly, then secure fixation is achieved, but the circuit layout is adversely affected
Solution Approach 1:
The patent eliminates multiple screws from the assembly by using a single integrated locking mechanism. The locking part with its pressing portion provides secure fixation without requiring multiple fastening members, thereby simplifying the circuit layout and reducing device complexity.
3Device complexity
If adhesive such as glue is used to fix the light-emitting assembly to the heat sink, then component reduction is achieved, but safety issues arise due to thermal expansion and potential separation
Solution Approach 1:
The locking part is designed to automatically press the light-emitting assembly against the heat sink through its elastic pressing portion. This self-pressing mechanism ensures reliable thermal contact and fixation without requiring additional fastening members or adhesives, achieving both component reduction and fixation reliability.
4Ease of manufacture
If the pressing part is separate from the locking part, then the locking function is simplified, but internal space is occupied and component count increases
Solution Approach 1:
The patent integrates the pressing part as an inherent portion of the locking part. The locking part includes a pressing portion that directly contacts the light-emitting assembly, combining the locking and pressing functions into a single component. This reduces the total component count while maintaining manufacturing simplicity.
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 design reduces the number of components, simplifies installation and maintenance, enhances safety by eliminating the risks associated with adhesives, and maintains thermal conductivity for effective heat dissipation, while maintaining the structural integrity and airtightness of the device.
Implementation Method 1
The pressing part is a protruding elastic bending part of the second locking part
Data Source
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AI summary
The present invention relates to a light-emitting device, comprising: a cover (1), a heat sink (2) and a light-emitting assembly (3), wherein the heat sink (2) has at least one first locking part (a), the cover (1) has at least one second locking part (b) corresponding to the first locking part (a), the second locking part (b) engages with the first locking part (a) to form an enclosed cavity (5) for the light-emitting assembly (3), and the second locking (b) has a pressing part (bl) pressing the light-emitting assembly (3) against the heat sink (2). In the light-emitting device according to the present invention, the light-emitting assembly (3) can be fixed tightly therein without using a fastening member or an adhesive, thereby reducing the number of components and facilitating installation and maintenance.