Bone Conduction Headset with Directional Mics for Thermal Comfort
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Solution Overview
Problem
Communication headsets that provide hearing protection and ambient sound awareness often isolate users from their surroundings, making it difficult to navigate in noisy environments, especially in hot and humid conditions where traditional ear cups can be uncomfortable.
Innovation Solution
A communication headset design featuring bone conduction speakers and microphones positioned on earpieces that fit around the ears, allowing for ambient sound detection and transmission without covering the ears completely, enabling better awareness of surroundings and comfort in various conditions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If traditional ear cups are used to provide hearing protection and ambient sound awareness, then communication function is achieved, but user comfort deteriorates in hot and humid conditions
Solution Approach 1:
The patent extracts the speaker component from the traditional in-ear position and relocates it to the mastoid bone area behind the ear. This extraction allows the ear canal to remain open for cooling while still providing hearing protection and ambient sound awareness through bone conduction technology.
2Object-affected harmful factors
If ear cups completely cover the ears to provide sound insulation, then noise protection is improved, but thermal comfort deteriorates in hot and humid conditions
Solution Approach 1:
The patent replaces the traditional mechanical acoustic isolation system (sealed ear cups) with a bone conduction system that transmits sound through the skull bones. This substitution allows ambient sound to pass through the ear canal naturally while providing noise protection for sensitive frequencies, and simultaneously maintains thermal comfort by keeping the ear canal open for air circulation.
3Loss of information
If in-ear speakers are used to provide audio output, then sound quality is improved, but range of movement is restricted
Solution Approach 1:
The patent extracts the speaker from the confined in-ear position and relocates it to the more spacious mastoid bone area. This extraction provides several benefits: improved sound quality through better bone conduction contact, increased range of movement as the earpiece does not protrude into the ear canal, and enhanced comfort during physical activities.
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 headset provides effective hearing protection and communication while allowing users to remain aware of their environment, reducing discomfort in hot and humid conditions by using bone conduction technology and eliminating the need for in-ear speakers, thus enhancing user comfort and mobility.
Implementation Method 1
a first bone conduction speaker carried on the second arm; a second bone conduction speaker carried on the second arm
Implementation Method 2
a first microphone, carried on the first earpiece, adapted to detect ambient sound from at least a first direction; and a second microphone, carried on the second earpiece, adapted to detect ambient sound from at least a second direction
Data Source
AI summary
A communication headset is disclosed. The headset comprises two earpieces: a first earpiece, having a first arm, positionable in front of a wearer's ear and a second arm, positionable behind a wearer's ear, with a first bone conduction speaker carried on the second arm; and a second earpiece, having a first arm, positionable in front of a wearer's ear and a second arm, positionable behind a wearer's other ear, with a second bone conduction speaker carried on the second arm. A first microphone is carried on the first earpiece, and is adapted to detect ambient sound from at least a first direction. A second microphone is carried on the second earpiece, and is adapted to detect ambient sound from at least a second direction.