Dual Zone Bollard Lighting Near Far Field Coverage
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Solution Overview
Problem
Existing bollard lighting systems are inefficient in lighting both near and far fields simultaneously, requiring multiple bollards for overlapping fields, which increases capital and energy expenditures.
Innovation Solution
A lighting apparatus with a first lower light source configured to cast a wide flood beam for the near field and a second upper light source configured to cast a narrow flood beam for the far field, both mounted on a bollard with angled light source mounts to direct light effectively, with the upper light sources directed at a smaller angle (approximately 25.5°) and lower light sources at a larger angle (approximately 38.6°) from horizontal.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If a single bollard with one light source is used, then the device complexity is reduced, but it cannot provide adequate lighting for both near field and far field simultaneously
Solution Approach 1:
The single bollard is segmented into multiple lighting zones with separate light sources: upper light sources for far field illumination and lower light sources for near field illumination. This segmentation allows each light source to be optimized for its specific lighting zone, achieving comprehensive coverage without requiring multiple bollards.
Solution Approach 2:
The lighting system transitions from a single-point light source to a multi-level spatial arrangement. By positioning light sources at different vertical heights (upper and lower mounting positions) and different angular orientations, the system creates a three-dimensional lighting pattern that simultaneously covers both near and far fields.
2Illumination intensity
If multiple bollards are positioned closely together to create overlapping fields, then the lighting coverage is improved, but the capital expenditures and energy consumption increase
Solution Approach 1:
The single bollard is designed to perform multiple lighting functions simultaneously. The upper light sources provide far field illumination while the lower light sources provide near field illumination, making the single bollard a multi-functional device that replaces what would traditionally require multiple single-function bollards.
Solution Approach 2:
The patent combines multiple lighting functions into a single integrated bollard structure. By merging the far field lighting function and near field lighting function into one unit, the system eliminates the need for multiple separate bollards, thereby reducing both energy consumption and capital expenditures.
3Illumination intensity
If multiple bollards are positioned closely together to create overlapping fields, then the lighting coverage is improved, but the capital expenditures increase
Solution Approach 1:
The single bollard is segmented into multiple lighting zones with separate light sources: upper light sources for far field illumination and lower light sources for near field illumination. This segmentation allows each light source to be optimized for its specific lighting zone, achieving comprehensive coverage without requiring multiple bollards.
4Device complexity
If a single light source is used in a bollard, then the device complexity is reduced, but it cannot provide adequate lighting for both near field and far field
Solution Approach 1:
The lighting assembly is segmented into distinct upper and lower lighting sections, each with its own light sources optimized for specific fields. The upper light sources are positioned and angled for far field coverage while lower light sources are positioned and angled for near field coverage, creating a segmented but integrated lighting system.
Solution Approach 2:
The lighting system transitions from a single-point light source to a multi-level spatial arrangement. By positioning light sources at different vertical heights (upper and lower mounting positions) and different angular orientations, the system creates a three-dimensional lighting pattern that simultaneously covers both near and far fields.
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 configuration allows for efficient lighting of both near and far fields with a single bollard, reducing the need for multiple units and minimizing energy consumption while maintaining effective illumination coverage.
Implementation Method 1
a first light source for lighting ground near to the base of the bollard and a second light source for lighting ground beyond the ground lighted by the first light source
Implementation Method 2
provide optimum heat communication away from the light sources
Data Source
AI summary
A lighting apparatus comprising a first lighting assembly comprising at least one lower light source configured to cast light over at least a near field and a second lighting assembly comprising at least one upper light source configured to cast light over at least a far field, the second lighting assembly mounted above the first lighting assembly.