Rotatable Omni Bollard Speaker for Even Sound Dispersion
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Solution Overview
Problem
Conventional outdoor omni speakers distort and fail to provide clear, unforced sound due to compromised acoustic positioning, resulting in unsatisfactory sound distribution.
Innovation Solution
An omni bollard speaker design featuring circular cylindrical housings with a domed driver and a rotatable high-frequency or mid-range speaker that can be positioned for optimal sound dispersion, allowing for 360-degree coverage and customizable directionality.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If traditional speakers are positioned in protective housings, then the speakers are protected from environmental damage, but the acoustic output is distorted and compromised
Solution Approach 1:
The patent inverts the conventional speaker configuration by placing the speaker driver at the bottom of the housing and directing sound upward through a reflective surface, rather than the traditional forward-firing configuration. This inversion allows the speaker to be protected within the housing while achieving clear, undistorted omnidirectional sound distribution.
Solution Approach 2:
The patent transitions from traditional horizontal sound projection to vertical sound projection by orienting the speaker driver downward and using an upward-facing reflective surface. This dimensional change enables sound to disperse 360 degrees horizontally while maintaining acoustic integrity.
2Device complexity
If speakers are fixed in a single position, then the structure is simple, but the sound coverage is limited and cannot adapt to different applications
Solution Approach 1:
The patent incorporates a rotatable speaker assembly that can change its orientation from a horizontal position for omnidirectional coverage to a vertical position for directional coverage. This dynamic adjustment capability allows the same device to adapt to different sound distribution requirements without increasing overall structural complexity.
Solution Approach 2:
The speaker system is designed to perform multiple functions: it can provide 360-degree omnidirectional sound coverage when rotated to the horizontal position, or focused directional sound coverage when rotated to the vertical position. This multi-functionality allows a single device to serve various acoustic applications.
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 speaker system provides even sound distribution and customizable coverage, maintaining sound quality while blending into the environment with its compact design and protective features.
Implementation Method 1
The speaker is rotatable from a first horizontal position directly over the domed driver to reflect wide dispersion acoustical output directly over the driver
Data Source
AI summary
An omni, bollard speaker has circular, cylindrical lower and upper housings. A domed driver is mounted within the top wall of the lower housing and a speaker is rotatably mounted in the internal space in the upper housing, between the top wall of the lower housing and the speaker cover of the upper housing. The speaker is rotatable from a first horizontal position directly over the domed driver to reflect wide dispersion acoustical output directly over the driver to disburse sound evenly within the listening area. The speaker can be quickly rotated downward and converted from this down-firing omni reflecting position to a side firing position or an up-and-out, direct radiating position. Thus, the same speaker serves many different sound coverage applications and can be customized on site for best use.