Integrated Direct and Indirect LED Lighting Fixture
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Solution Overview
Problem
Existing light fixtures in commercial and transportation areas often require additional installations for indirect lighting, which are costly and impractical due to the time and expense associated with installing and operating separate fixtures for downward and indirect lighting configurations.
Innovation Solution
A light fixture design incorporating both direct and indirect light emitting diode (LED) arrays within a single housing, where the indirect LED array illuminates a mounted panel or shroud, allowing for independent control and configuration to provide both downward and transverse lighting without the need for separate fixtures.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If separate light fixtures are used for direct and indirect lighting, then lighting functionality is improved, but device complexity and installation cost increase
Solution Approach 1:
The patent combines direct and indirect lighting arrays into a single light fixture housing. The direct lighting array emits light downward while the indirect lighting array emits light transverse to the downward axis, illuminating a ceiling panel or surface. This integration eliminates the need for separate fixtures, reducing installation complexity while maintaining both lighting functions.
Solution Approach 2:
The single light fixture performs multiple functions by incorporating both direct lighting (downward illumination for tasks and pathways) and indirect lighting (transverse illumination for ceiling or overhead surface lighting). This multi-functional design allows one fixture to replace what would traditionally require two separate fixtures.
2Illumination intensity
If additional light fixtures are installed for indirect lighting, then indirect illumination is improved, but installation time and cost increase
Solution Approach 1:
By integrating the indirect lighting array within the same housing as the direct lighting array, the patent enables both lighting functions to be installed simultaneously in a single location. This eliminates the need for separate installation processes, reducing both time and cost while achieving the desired indirect illumination effect.
3Adaptability or versatility
If separate fixtures are used for direct and indirect lighting, then lighting control flexibility is improved, but operational cost increases
Solution Approach 1:
The patent incorporates controllers that can independently control the direct and indirect lighting arrays, providing operational flexibility similar to separate fixtures. The ability to independently dim, brighten, or switch each array allows for energy-efficient operation by activating only the needed lighting function, thereby reducing operational costs while maintaining control flexibility.
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 solution enables efficient and cost-effective provision of both direct and indirect lighting within a single fixture, reducing installation complexity and operational costs while allowing for customizable lighting options, including color selection and adjustable brightness.
Implementation Method 1
a direct lighting array coupled to the housing that includes one or more light emitting diodes oriented to project light along a downward axis
Implementation Method 2
an indirect lighting array coupled to the housing that includes a plurality of light emitting diodes oriented to project light along axes extending transverse to the downward axis
Data Source
AI summary
A lighting fixture and method of providing lighting is provided herein that utilizes both direct and indirect light sources. The direct and indirect light sources can be provided in arrays of light emitting diodes (LEDs) oriented along desired axes. In some versions, the light fixtures described herein include a direct lighting array having one or more LEDs oriented to project light downwardly and an indirect lighting array having a plurality of LEDs oriented to project light in a transverse direction. Further, the light fixtures can include an indirect lighting member configured to be illuminated by the plurality of LEDs of the indirect lighting array. Additionally, or alternatively, the light fixtures described herein can include one or more controllers that are configured to independently operate the direct and indirect lighting arrays. Moreover, the indirect lighting array can be configured to emit light in a plurality of colors to visually convey information.