Open-Front Mobile Terminal Booth With Laminated Sound Absorption
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Solution Overview
Problem
Existing mobile terminal booths in public areas fail to provide a comfortable and quiet space for phone conversations due to reverberating noise, which makes it difficult for users to hear and be heard, and also concerns about privacy and noise pollution for others.
Innovation Solution
A mobile terminal booth equipped with a sound absorbing unit made of materials like needle felt, glass wool, and polyurethane, arranged in a laminate structure with a viscous adhesive and vinyl film, which absorbs sound waves and reduces reverberation, while also providing a partially open structure to prevent sound leakage.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If a confined box structure with transparent walls is used to create a noiseless space, then sound isolation from outside is improved, but reverberation inside the space increases making the environment louder and less comfortable
Solution Approach 1:
The patent applies porous sound absorbing materials (such as foam or fabric-filled panels) to the interior surfaces of the booth. These porous structures allow sound waves to enter and be absorbed through friction and viscous losses within the material pores, converting acoustic energy to heat and reducing reverberation while maintaining the enclosed space's noise isolation benefits
Solution Approach 2:
The patent changes the acoustic parameters of the booth interior by introducing sound absorbing materials that alter the reflection coefficient and reverberation time. This transforms the acoustic environment from a hard-reflection enclosed space to a controlled acoustic space with reduced reverberation, improving comfort while maintaining noise isolation
2Object-affected harmful factors
If a complete enclosed box structure with door is used, then noise isolation is improved, but the space required for installation increases and production cost becomes relatively high
Solution Approach 1:
The patent extracts the door element from the enclosed box structure, creating an open-front booth design. This removes the need for a complete enclosure while maintaining noise isolation through strategic placement of sound absorbing materials at the open front, significantly reducing installation space requirements and simplifying access
Solution Approach 2:
The patent applies sound absorbing materials specifically at the open front area where sound entry is most likely, rather than enclosing the entire structure. This localized approach provides adequate noise isolation for the user's immediate needs while minimizing the overall footprint and installation space required
3Object-affected harmful factors
If a complete enclosed box structure with door is used, then noise isolation is improved, but production cost becomes relatively high
Solution Approach 1:
The patent removes the door component from the design, eliminating the need for door frames, hinges, and sealing mechanisms. This simplification reduces manufacturing complexity and material costs while achieving the same noise isolation effect through fixed sound absorbing panels at the open front
Solution Approach 2:
The patent concentrates sound absorption resources at the critical open front area rather than distributing them throughout a complete enclosure. This targeted approach reduces the total amount of expensive sound absorbing material needed while maintaining effective noise isolation for the user
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 booth effectively reduces reverberating noise, allowing for clear conversations and maintaining user privacy by absorbing sound waves and blocking noise leakage, creating a comfortable and quiet environment for phone use without disturbing others.
Implementation Method 1
The sound absorbing unit (110) is provided with a sound absorbing layer (115a)
Data Source
AI summary
A mobile terminal booth which provides an area where a mobile terminal can be comfortably used is described. This mobile terminal booth is provided with a sound absorbing unit which is placed in a public place and partially partitions a space as viewed from the above where a user of a mobile terminal can have a telephone conversation. The sound absorbing unit is provided with an entrance which is always opened without any closing member. The sound absorbing unit is made of a laminate consisting of a plurality of sound absorbing layers, and serves as a sound controlling means. Particularly, the sound absorbing layers are joined together in the form of the laminate with a viscous adhesive which does not solidify after formation of said laminate, maintains its viscosity when the mobile terminal booth is used and functions as said sound controlling member.