Helmet Shield Ventilation Unit for Fog Prevention

Solution Overview

Problem

Helmet shields often become stuffy due to a hermetically sealed structure, leading to air circulation issues and potential steam blocking the wearer's view, as existing solutions do not effectively allow air to flow out and prevent condensation.

Innovation Solution

A helmet shield with a ventilation unit at both sides of the lens unit, featuring ventilation holes and guide units to facilitate air flow out and prevent steam buildup, while maintaining a clear view through a combination of lens and frame units.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If the helmet shield is made hermetically sealed to protect the wearer, then safety and protection are improved, but air circulation is blocked causing stuffiness and steam buildup

Engineering Contradiction:

ImproveprotectionVSAvoidsteam buildup

Core Design Contradiction:

ReliabilityVSObject-generated harmful factors

Solution Approach 1:

The shield is divided into separate functional components: a lens unit for visibility, a frame unit for structural support, and a ventilation unit for air circulation. This segmentation allows each component to perform its specific function independently while working together as a unified shield system.

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

The ventilation unit acts as an intermediary element between the hermetic seal and the need for air circulation. It provides controlled communication channels that allow air to flow through the shield without compromising the overall protective seal, thus preventing steam buildup while maintaining protection.

Inventive Principle:

Principle #24Intermediary (Mediator)

2Reliability

If the helmet shield is made hermetically sealed to maintain protection, then safety is improved, but air flow out of the shield is blocked causing stuffiness

Engineering Contradiction:

ImprovesafetyVSAvoidair circulation

Core Design Contradiction:

ReliabilityVSEase of operation

Solution Approach 1:

The shield is divided into separate functional components: a lens unit for visibility, a frame unit for structural support, and a ventilation unit for air circulation. This segmentation allows each component to perform its specific function independently while working together as a unified shield system.

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

The ventilation unit acts as an intermediary element between the hermetic seal and the need for air circulation. It provides controlled communication channels that allow air to flow through the shield without compromising the overall protective seal, thus preventing steam buildup while maintaining protection.

Inventive Principle:

Principle #24Intermediary (Mediator)

3Ease of operation

If ventilation holes are added to the shield to allow air flow, then air circulation is improved, but the shield structure becomes more complex

Engineering Contradiction:

Improveair circulationVSAvoidshield structure

Core Design Contradiction:

Ease of operationVSDevice complexity

Solution Approach 1:

The shield is divided into separate functional components: a lens unit for visibility, a frame unit for structural support, and a ventilation unit for air circulation. This segmentation allows each component to perform its specific function independently while working together as a unified shield system.

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

The frame unit serves multiple functions: it provides structural support for the shield, holds the lens unit in place, and integrates the ventilation unit. This multi-functionality reduces the need for additional separate components, thereby limiting the increase in overall structural complexity while achieving effective air circulation.

Inventive Principle:

Principle #6Universality (Multi-functionality)

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 ventilation unit allows smooth airflow out of the helmet, preventing steam from blocking the wearer's view and maintaining a clear, fog-free vision during use.

Implementation Method 1

a ventilation unit provided at both sides of the lens unit for communication between an inside and an outside of the helmet shield

Methodology Applied

Scientific EffectAir flow: Convection

Data Source

PatentUS9801425B2Helmet shield including ventilation unit

Publication Date: 2017.10.31 HONG JIN CROWN

AI summary

A helmet shield coupled to a front opening of a helmet includes a lens unit provided to face a front of the front opening; a frame unit provided along a circumference of the lens unit; and a ventilation unit provided at both sides of the lens unit for communication between an inside and an outside of the helmet shield.