Eyewear Frame Ventilation Apertures for Heat Exchange
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Solution Overview
Problem
Eyewear designs for active or sporting purposes face challenges in managing light, heat, and moisture, where features that block peripheral light often restrict airflow, leading to condensation and trapped perspiration, and designs that improve airflow compromise light management or impact resistance.
Innovation Solution
Incorporating ventilation apertures in the eyewear frame and temple bars to direct airflow from the outer to the inner face, along with a fluid channel within the temple bar for heat exchange and moisture evaporation, and reducing the eye wire thickness for drainage, while maintaining light management capabilities.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Illumination intensity
If the eyewear frame is constructed to substantially conform to the wearer's face to block peripheral light, then light management is improved, but airflow is restricted leading to condensation and trapped perspiration
Solution Approach 1:
The frame is segmented to include ventilation apertures that create dedicated airflow channels. These apertures are strategically positioned to allow air to pass through the frame structure, separating the light-blocking function from the ventilation function. The segmentation enables simultaneous achievement of both peripheral light blocking and adequate airflow for moisture management.
Solution Approach 2:
Different regions of the frame are given different properties: certain areas maintain thick, conforming structures for optimal light blocking, while specific localized regions incorporate ventilation apertures and reduced thickness to facilitate airflow. This local differentiation allows the frame to perform both light management and moisture evacuation functions effectively.
2Ease of operation
If ventilation holes are placed through the frame and temple bars to improve airflow, then moisture management is improved, but peripheral light leakage increases
Solution Approach 1:
Ventilation apertures are incorporated only in specific localized regions of the frame where they will not compromise light blocking. The apertures are positioned in areas that do not align with the wearer's peripheral vision paths, allowing airflow improvement without significant light leakage. Different frame regions maintain different thickness and opacity properties to balance ventilation and light management.
Solution Approach 2:
The frame structure is divided into light-blocking segments and ventilation segments. The ventilation apertures are confined to specific segments that are strategically located to minimize their impact on peripheral light blocking while maximizing airflow benefits. This segmentation allows the majority of the frame to maintain light-blocking integrity.
3Ease of operation
If the eye wire is completely eliminated to increase airflow, then moisture management is improved, but impact resistance decreases
Solution Approach 1:
The eye wire is segmented rather than completely eliminated. Specific portions of the eye wire are removed or reduced in thickness to create ventilation pathways for improved airflow and moisture management. However, critical portions of the eye wire are retained at full strength to maintain impact resistance and structural integrity. This partial segmentation achieves both airflow improvement and safety requirements.
Solution Approach 2:
Different sections of the eye wire have different thickness properties: areas where airflow is prioritized have reduced thickness or openings, while areas requiring impact resistance maintain full thickness and structural strength. This local differentiation allows the eye wire to simultaneously provide ventilation pathways and impact protection.
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
Facilitates airflow and moisture evaporation without sacrificing light management, reducing condensation and perspiration issues, and enhancing wearer comfort with improved heat exchange and mechanical grip.
Implementation Method 1
air flow may be restricted due to the close conformity of the frame and temple bars to a wearer's head and face, significantly reducing convective heat transfer in those regions that is necessary to evaporate perspiration
Implementation Method 2
perspiration may become trapped under the frame or temple bars and, because air flow is limited, any such perspiration will not evaporate efficiently
Data Source
AI summary
An eyewear frame includes a plurality of ventilation apertures disposed in fluid communication with corresponding ones of a plurality of fluid channels. The plurality of ventilation apertures are dimensioned and configured to conduct fluid from an outer face of the ventilated eyewear frame to an inner face. The plurality of fluid channels are dimensioned and configured to conduct fluid therealong, and at least partially in communication with a wearer of the ventilated eyewear frame, facilitating heat exchange with the wearer.