Ventilated Face Shield With Flexible Glare Shield
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Solution Overview
Problem
Existing face shields lack effective glare control and ventilation, leading to eye and facial fatigue, and are often cumbersome and costly, with a need for lightweight, disposable designs that can be easily assembled and stored compactly.
Innovation Solution
A ventilated face shield assembly featuring a flexible transparent face shield, a flexible glare shield, and a lightweight forehead spacer that maintains a three-dimensional shape without a stiffening member, allowing for enhanced ventilation and glare control, with options for user-assembled components and materials like polystyrene, acrylic, and polycarbonate.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If a traditional face shield design is used, then protection from debris and splatters is provided, but glare control is insufficient and ventilation is inadequate leading to eye and facial fatigue
Solution Approach 1:
The face shield is divided into separate functional components: a transparent face shield for protection, a separate glare shield for glare control, and a forehead spacer for ventilation and positioning. This segmentation allows each component to optimize its specific function without compromising the others.
Solution Approach 2:
The forehead spacer acts as an intermediary element between the face shield and the wearer's face, creating a ventilation gap that reduces fogging and improves comfort. It mediates the interaction between the protective shield and the user's facial features.
2Stability of the object's composition
If a rigid structure is used to maintain three-dimensional shape, then structural stability is improved, but weight and complexity increase
Solution Approach 1:
The face shield uses flexible sheet materials that can be formed into three-dimensional shapes without requiring rigid internal structures. The flexibility allows the shield to conform to the wearer's face while maintaining its protective three-dimensional configuration, reducing weight and complexity.
Solution Approach 2:
The face shield employs flexible connections and adjustable positioning mechanisms that allow the structure to dynamically adapt to the wearer's face shape. This dynamic flexibility replaces rigid static structures, maintaining three-dimensional shape while reducing weight.
3Ease of operation
If a complete face shield assembly is packaged for shipping, then readiness for use is improved, but storage and shipping volume increase
Solution Approach 1:
The face shield assembly is segmented into separate components (face shield, glare shield, forehead spacer) that can be packaged compactly and assembled at the point of use. This segmentation dramatically reduces packaging volume while maintaining ease of use through simple assembly instructions.
Solution Approach 2:
The packaging includes pre-attached components and assembly instructions that enable the user to quickly assemble the complete face shield assembly at the point of use. This preliminary preparation maintains readiness for use while minimizing packaging volume by only including essential components.
Data Source
AI summary
A ventilated face shield assembly with a glare shield which protects the face of the wearer from debris and/or hazardous materials, such as biological materials, and is particularly well suited for medical and dental applications. A ventilated headband is used as a spacer and to support the face shield assembly on the face of the wearer. The glare shield and face shield are made of sheet material and are configured for flat storage. In one embodiment, the glare shield and face shield are coupled with a hinge and a flexible cord retains the glare shield and face shield in an arcuate configuration. In another embodiment, a protective breathing mask is attached to the face shield assembly and supports the glare shield and face shield. In a further embodiment, the glare shield is used as the spacer for the face shield.