Light Emitting Device Dynamic Vibration Absorber Mechanical Attachment
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Solution Overview
Problem
Variations in adhesive attachment strength lead to separation issues in light emitting devices, increasing worker workload and reducing work efficiency during manufacturing.
Innovation Solution
A light emitting device with a dynamic vibration absorber, comprising a weight and elastic portions, is attached to the light emitting unit using an attaching member inserted into a groove, to absorb vibrations and improve attachment stability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If adhesive is used to attach the elastic portion to the light emitting unit, then the attachment can be achieved, but variations in attachment strength occur leading to separation and reduced reliability
Solution Approach 1:
The patent replaces the adhesive bonding system with a mechanical attachment system using a clamp member. The clamp member has a clamp portion that physically secures the elastic portion to the light emitting unit, eliminating the need for adhesive and its associated variability issues. This mechanical substitution provides consistent attachment strength without the complexity of adhesive selection and application processes.
2Ease of manufacture
If adhesive attachment is used, then the dynamic vibration absorber can be assembled, but worker workload increases and work efficiency decreases
Solution Approach 1:
The clamp member is designed to be attached to the light emitting unit by simple insertion or snap-fit mechanisms, allowing workers to complete the attachment without complex adhesive application procedures. The elastic portion itself provides the clamping force through its elasticity, making the attachment process self-servicing and reducing the skill level and time required for assembly.
3Ease of operation
If the elastic portion is loosely attached, then assembly is easier, but separation occurs after shipment reducing product reliability
Solution Approach 1:
The patent utilizes the dynamic properties of the elastic portion to maintain attachment stability. The elastic portion continuously exerts a restoring force that keeps the clamp member securely attached to the light emitting unit. This dynamic elastic force adapts to vibrations and movements during shipment, maintaining reliable attachment without requiring overly tight or complex mechanical fastening.
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 dynamic vibration absorber reduces vibration-induced image defects by aligning the natural frequency with the light emitting unit, enhancing work efficiency and stability during manufacturing.
Implementation Method 1
an elastic portion that supports the weight such that the weight is capable of vibrating
Implementation Method 2
the dynamic vibration absorber being attached to the light emitting unit to absorb vibration of the light emitting unit
Implementation Method 3
a dynamic vibration absorber including a weight positioned at a center of the light emitting unit in the one direction and an elastic portion that supports the weight such that the weight is capable of vibrating
Data Source
AI summary
A light emitting device includes a light emitting unit including plural light emitting elements arranged in one direction, the light emitting unit being positioned at a predetermined position at both ends in the one direction, the light emitting elements emitting light in a same direction; a dynamic vibration absorber including a weight positioned at a center of the light emitting unit in the one direction and an elastic portion that supports the weight such that the weight is capable of vibrating, the dynamic vibration absorber being attached to the light emitting unit to absorb vibration of the light emitting unit; and an attaching member including a portion inserted in a groove formed in the elastic portion of the dynamic vibration absorber, the portion being used to attach the dynamic vibration absorber to the light emitting unit.