Outdoor Street Luminaire with Segmented LED Modules for Zone-Specific Lighting
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Solution Overview
Problem
Existing outdoor street luminaires are not optimized for both pedestrian and motorized zones in terms of luminance generation and energy efficiency, often resulting in suboptimal light distribution and high power consumption.
Innovation Solution
An outdoor street luminaire design featuring separate white-light LED modules for pedestrian and motorized zones with different color temperatures (warm-white for pedestrians and neutral- or cold-white for vehicles) within a single housing, allowing for adjustable lighting levels and activation based on presence or motion detection, thereby optimizing energy efficiency and comfort.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If luminaires use dedicated optics for pedestrian zones (P-Class and C-Class lighting calculations), then comfortable light distribution is achieved, but luminance generation is reduced (max intensity angle is increased)
Solution Approach 1:
The luminaire is divided into separate optical modules: a first optical module dedicated to pedestrian zones with optics optimized for P-Class and C-Class lighting calculations, and a second optical module dedicated to motorized zones with optics optimized for M-Class lighting calculations. This segmentation allows each module to be optimized for its specific function without compromising the other.
2Illumination intensity
If luminaires use dedicated optics for motorized zones (M-Class lighting calculation), then luminance generation is optimized, but comfortable light distribution is reduced
Solution Approach 1:
The luminaire is divided into separate optical modules: a first optical module dedicated to pedestrian zones with optics optimized for P-Class and C-Class lighting calculations, and a second optical module dedicated to motorized zones with optics optimized for M-Class lighting calculations. This segmentation allows each module to be optimized for its specific function without compromising the other.
3Adaptability or versatility
If luminaires use variable light distribution, then lighting flexibility is improved, but optimization for specific zones is reduced
Solution Approach 1:
The luminaire is divided into separate optical modules: a first optical module dedicated to pedestrian zones with optics optimized for P-Class and C-Class lighting calculations, and a second optical module dedicated to motorized zones with optics optimized for M-Class lighting calculations. This segmentation allows each module to be optimized for its specific function without compromising the other.
Solution Approach 2:
The luminaire incorporates a control unit that can dynamically activate or deactivate specific optical modules based on detected presence of pedestrians or motorized vehicles. This dynamic control enables the system to adapt to different lighting scenarios while maintaining zone-specific optimization through the dedicated optical modules.
4Adaptability or versatility
If luminaires use multiple oriented optics for full light distribution flexibility, then adaptability is improved, but device complexity increases
Solution Approach 1:
The luminaire is divided into separate optical modules: a first optical module dedicated to pedestrian zones with optics optimized for P-Class and C-Class lighting calculations, and a second optical module dedicated to motorized zones with optics optimized for M-Class lighting calculations. This segmentation allows each module to be optimized for its specific function without compromising the other.
Solution Approach 2:
The luminaire incorporates a control unit that can dynamically activate or deactivate specific optical modules based on detected presence of pedestrians or motorized vehicles. This dynamic control enables the system to adapt to different lighting scenarios while maintaining zone-specific optimization through the dedicated optical modules.
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 solution provides comfortable and efficient lighting for both pedestrian and motorized zones with reduced power consumption and no oversizing, meeting regulatory requirements for various lighting classes.
Implementation Method 1
the luminaire comprises in one housing of the luminaire at least one white-light LED based module for the pedestrian zone and at least one white-light LED based module for the motorized zone
Data Source
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AI summary
The invention relates an outdoor street luminaire (106), designed for covering with its light output street areas (104, 102) comprising at least one pedestrian zone (104) and at least one motorized zone (102). Moreover, the luminaire (106) comprises in one housing (106a) at least one white-light LED based module for the pedestrian zone (202) and at least one white-light LED based module for the motorized zone (204), wherein the white-light LED module for motorized zone (202) has a different color temperature than the white-light LED based module for the pedestrian zone (204).