Head-Mounted Display Fan Cooling Through Facial Interface
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Solution Overview
Problem
Head-mounted displays generate heat during use, causing user discomfort due to thermal buildup.
Innovation Solution
Incorporation of a fan system within the head-mounted display to create airflow through a facial interface, utilizing vents and passages to dissipate heat and provide evaporative cooling, with adjustable flow regulation and sensor-controlled operation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Temperature
If a fan system is added to create airflow for cooling, then thermal discomfort is reduced and user comfort is enhanced, but device complexity increases
Solution Approach 1:
The patent introduces a fan as an intermediary component that creates airflow between the user's face and the internal components. This mediator facilitates heat transfer and evaporative cooling without requiring direct contact or complex thermal management systems, thereby reducing thermal discomfort while maintaining manageable device complexity.
Solution Approach 2:
The patent employs pneumatic principles by using a fan to generate controlled airflow through the head-mounted display. This airflow serves multiple functions: cooling internal components, providing evaporative cooling on the user's face, and managing thermal buildup. The pneumatic approach offers a relatively simple solution compared to active thermal management systems.
2Temperature
If airflow is directed through the face to provide cooling, then evaporative cooling effect is achieved, but device complexity increases due to flow regulation components
Solution Approach 1:
The patent utilizes flow regulation components that can adjust airflow parameters (flow rate, direction, distribution) to optimize the evaporative cooling effect on the user's face. By dynamically changing airflow parameters rather than redesigning the entire cooling system, the patent achieves effective cooling while controlling device complexity.
3Temperature
If heat is dissipated from internal components, then component temperature is reduced, but thermal management system complexity increases
Solution Approach 1:
The patent implements continuous airflow through the head-mounted display using a fan system. This continuous airflow provides ongoing cooling to internal components, preventing thermal buildup and maintaining optimal operating temperatures. The continuous action eliminates the need for intermittent cooling cycles or complex thermal switching mechanisms.
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
Reduces thermal discomfort by creating a cooling effect on the face and cooling internal components, enhancing user comfort and efficiency.
Implementation Method 1
create air flow from the face through the facial interface and the component chamber... provide evaporative cooling
Data Source
AI summary
A head-mounted display configured to be worn on a face includes a housing, a facial interface coupled to a rear portion of the housing and configured to engage with the face, a component chamber defined in the housing, and a fan located in the component chamber and configured to create air flow from the face through the facial interface and the component chamber.