Integrated Ceiling Lighting and Loudspeaker for Sound Masking
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Solution Overview
Problem
There is a need to reduce the number of ceiling fixtures in commercial spaces while improving the ease of installation, aesthetic appeal, power requirements, cost, and effectiveness of lighting and sound systems, particularly for sound masking in open-plan offices.
Innovation Solution
A commercial lighting system integrating a low directivity index loudspeaker assembly with a lighting unit in a single integral housing, allowing for sound masking, paging, or music emission, which can be oriented to provide acoustic signals directly or after reflection through the ceiling, and designed to fit standard ceiling tile dimensions with features like reflective and transparent surfaces for improved sound dispersion and light transmission.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If separate lighting fixtures and sound systems are installed in commercial spaces, then each system can be optimized independently, but the number of ceiling fixtures increases and installation complexity increases
Solution Approach 1:
The patent combines lighting units and loudspeaker assemblies into a single integrated fixture that mounts to the ceiling together. The housing contains both the lighting components and acoustic components (loudspeaker, amplifier, microphone) as unified assemblies, reducing the number of separate ceiling fixtures while maintaining independent optimization of each subsystem
Solution Approach 2:
The integrated ceiling fixture serves multiple functions simultaneously: it provides illumination through LED arrays, delivers sound masking through loudspeakers, enables two-way communication via microphones and amplifiers, and can be controlled through wireless or wired systems. This multi-functionality eliminates the need for separate fixtures for each function
2Ease of manufacture
If multiple separate fixtures are used for lighting and sound, then each system can be independently maintained, but installation ease and aesthetic appearance deteriorate
Solution Approach 1:
The patent integrates lighting units and sound systems into a single ceiling-mounted fixture with a unified housing structure. This consolidation simplifies installation to a single mounting operation rather than multiple separate installations, while the modular internal design allows individual components to be accessed and maintained independently
3Reliability
If traditional sound masking systems are installed separately, then acoustic coverage can be optimized, but power requirements and cost increase
Solution Approach 1:
The integrated fixture combines lighting and sound masking systems, allowing shared power supply infrastructure and control systems. The LED lighting units consume minimal power compared to traditional lighting, and the sound masking amplifier is efficiently powered from the same electrical source, reducing overall power requirements while maintaining acoustic coverage effectiveness
Solution Approach 2:
The system uses LED technology which operates at lower power levels than traditional lighting, and employs efficient amplifier circuits that optimize power consumption for sound masking. The integrated design allows for coordinated operation where lighting and acoustic systems can be activated based on occupancy and environmental conditions, further optimizing energy usage
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
This integrated system enhances sound masking and aesthetic appeal, reduces installation complexity, and optimizes power usage while minimizing the number of ceiling fixtures, providing effective sound coverage and improved worker satisfaction through reduced noise distraction.
Implementation Method 1
a loudspeaker assembly mounted to the integral housing, the loudspeaker assembly comprising a low directivity index
Implementation Method 2
With the development of lighting based on Light Emitting Diodes (LED's), there is increasing development of creative and energy-efficient solutions for lighting in commercial spaces
Implementation Method 3
oriented to provide an acoustic sound signal from the integral housing that will be transmitted, directly or after reflection from one or more surfaces, through the ceiling to reach a listener
Data Source
AI summary
A commercial lighting system, the system comprising, an integral housing adapted to be coupled to a ceiling of a building, a lighting unit mounted to the integral housing and a loudspeaker assembly mounted to the integral housing, the loudspeaker assembly comprising a low directivity index, and oriented to provide an acoustic sound signal from the integral housing to a listener in an area of the building comprising the ceiling.