Full-Face Helmet Passage Heating for Eye Shield Defogging
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Solution Overview
Problem
Full-face helmets experience condensation issues on the eye shield due to humid air exhaled by the wearer, leading to discomfort when trying to eliminate condensation by opening the visor, which exposes the wearer to cold air.
Innovation Solution
A helmet with an electrical heating device integrated within the shell to heat the passage leading to the eye shield, preventing condensation by maintaining a warm environment and allowing for the exhaust of humid air without exposing the wearer to cold air.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If the visor is opened to allow outside air to flow into the helmet to eliminate condensation, then the condensation on the eye shield is reduced, but the wearer is exposed to cold air which causes discomfort
Solution Approach 1:
The patent changes the temperature parameter of the air inside the helmet by using a heating element to warm the air. This prevents condensation formation by maintaining the air temperature above the dew point, while avoiding the need to open the visor and expose the wearer to cold outside air. The heating element actively modifies the thermal state of the internal atmosphere to eliminate the harmful condensation effect.
Solution Approach 2:
The patent introduces a heating element as an intermediary device between the wearer and the condensation problem. Instead of directly opening the visor to remove condensation, the heating element acts as a mediator that prevents condensation formation by warming the air, thus solving the problem without requiring direct exposure to cold air.
2Ease of operation
If the visor is kept closed to protect the wearer from cold air, then wearer comfort is maintained, but condensation accumulates on the eye shield
Solution Approach 1:
The heating element actively changes the temperature parameter of the internal air environment, maintaining it at a level that prevents condensation while the visor remains closed. This allows the system to simultaneously achieve both wearer comfort (closed visor) and prevention of condensation (heated air).
Solution Approach 2:
The heating element performs preliminary action by warming the air before condensation can form on the eye shield. By proactively controlling the air temperature, the system prevents condensation accumulation rather than reacting to it after the fact, allowing the visor to remain closed while maintaining clear vision.
3Object-affected harmful factors
If a heating device is added to prevent condensation, then condensation on the eye shield is eliminated, but the device complexity increases
Solution Approach 1:
The patent extracts the heating function from a complex climate control system and implements it as a simple, dedicated heating element. By isolating and implementing only the necessary heating function without additional complexity of full environmental control, the solution adds minimal complexity while effectively eliminating condensation.
Solution Approach 2:
The heating element is implemented as a simple, inexpensive component that can be easily integrated into the helmet. Rather than using a complex, expensive, or permanent climate control system, the patent employs a straightforward heating device that provides the necessary function with minimal added complexity and cost.
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 electrical heating system effectively prevents condensation on the eye shield, maintaining a clear field of vision and keeping the wearer comfortable by heating the air within the helmet, thus eliminating the need to open the visor to remove humidity.
Implementation Method 1
an electrical heating device disposed within the helmet shell for heating the passage
Data Source
AI summary
A helmet has a helmet shell. The helmet shell defines an inner space and a passage. The passage has an open end. The passage fluidly communicates with the inner space via the open end. The helmet further comprises an electrical heating device. The electrical heating device is disposed within the helmet shell for heating the passage.