VR Headset Forehead Venting to Prevent Fogging and Light Leakage
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Solution Overview
Problem
Existing VR head-mounted equipment suffers from poor air exchange performance, stuffiness, lens fogging, and adverse effects on the VR watching experience due to light transmittance through ventilation channels and external heat dissipation mechanisms that compromise airtightness and ventilation efficiency.
Innovation Solution
An air conditioning device with a forehead-mounted piece featuring a curved outer and inner shell, an inner cavity, air exchange fans, and slotted air outlet channels that circulate air between the forehead and cheeks, enhancing ventilation and heat dissipation while preventing light transmittance, and using a soft cushion for comfort.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If a wide and straight ventilation channel is used, then ventilation performance is improved, but light transmittance increases affecting VR watching effect
Solution Approach 1:
The ventilation channel is segmented into multiple sections with different orientations (first channel along longitudinal direction, second channel along lateral direction). This segmentation allows the system to maintain effective ventilation pathways while preventing direct light transmission that would occur in a single wide straight channel, thus resolving the contradiction between ventilation performance and light blocking.
2Object-affected harmful factors
If a light-proof ventilation channel is used, then light transmittance is reduced improving VR watching effect, but ventilation performance deteriorates causing stuffiness and lens fogging
Solution Approach 1:
The ventilation system transitions from a single-plane channel to a three-dimensional multi-directional channel structure. The first channel extends along the longitudinal direction while the second channel extends along the lateral direction, creating a spatial network that maintains ventilation efficiency without requiring large openings that would compromise light blocking performance.
3Temperature
If heat dissipation mechanism is mounted outside the headband, then heat dissipation capability is improved, but device complexity and airtightness are compromised
Solution Approach 1:
The heat dissipation function is merged with the existing headband structure by integrating ventilation channels directly into the headband body. The first and second ventilation channels are formed within the headband's longitudinal and lateral dimensions, eliminating the need for separate external heat dissipation mechanisms and their associated mounting complexities.
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
Improves air circulation, reduces stuffiness and lens fogging, and maintains a clear VR experience by optimizing air exchange and heat dissipation without light interference, while accommodating different head sizes through spliced inner shells.
Implementation Method 1
an air exchange fan is arranged inside the inner cavity... an effect of air circulation between the forehead of the user and an external air flow is achieved
Data Source
AI summary
The present disclosure relates to the field of head-mounted equipment and discloses an air conditioning device of virtual reality (VR) head-mounted equipment. The air conditioning device includes a forehead-mounted piece configured to be worn on the forehead of the head of a user. By the arrangement of the air exchange fan inside the inner cavity, an effect of air circulation between the forehead of the user and an external air flow is achieved, so that effects of heat dissipation, ventilation, and air exchange are achieved; and stuffiness and lens fogging difficultly occur.