Utility Vehicle Light Marking for Work Area Delineation
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Solution Overview
Problem
Commercial vehicles such as refuse collection and street cleaning vehicles face safety hazards due to encroachment by other road users into their working areas, which are not adequately secured by existing physical barriers, and drivers often disregard these areas, posing risks to personnel and vehicles.
Innovation Solution
Implementing a commercial vehicle with lighting units that project light markings on the contact surface to define and secure the working area, using signal colors to warn pedestrians and other road users of danger zones, with adjustable and non-dazzling light projections that are activated only during work operations and low speeds.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If physical barriers are used to demarcate the work area, then the working area is secured to the side of the hopper, but the barriers only provide limited coverage and do not secure the entire working area including rear and side zones
Solution Approach 1:
The patent replaces physical mechanical barriers with an optical signaling system (light markings). The lighting units project light markings onto the contact surface to define the working area boundaries, eliminating the need for physical barriers while providing comprehensive coverage of the entire working area including rear and side zones where personnel operate
Solution Approach 2:
The patent transitions from two-dimensional physical barriers to three-dimensional spatial illumination. By projecting light markings onto the contact surface and using multiple lighting units positioned at different locations (front, rear, sides), the system creates a comprehensive three-dimensional visualization of the working area boundaries, enhancing both coverage and visibility
2Reliability
If lighting units project light markings on the contact surface, then the working area is clearly delineated and road users are warned, but the lighting units must be positioned and oriented precisely to avoid dazzling road users
Solution Approach 1:
The patent applies different orientation characteristics to different lighting units based on their local requirements. Each lighting unit is positioned and oriented specifically for its location: front lighting units angle toward the rear, rear lighting units angle toward the front, and side lighting units are oriented to illuminate the contact surface while avoiding road users. This localized optimization achieves comprehensive coverage without dazzling effects
Solution Approach 2:
The contact surface serves as an intermediary medium between the lighting units and road users. By projecting light markings onto the contact surface rather than directly toward road users, the system achieves effective communication of working area boundaries while inherently preventing dazzling effects on road users
3Reliability
If the light markings are projected at a distance from the vehicle body, then the warning is more visible to road users, but the light markings must be precisely aligned to maintain continuous coverage of the working area
Solution Approach 1:
The patent divides the working area boundary marking into multiple discrete light markings projected by separate lighting units positioned at different locations (front, rear, sides). Each lighting unit independently projects its light marking at an optimized distance from the vehicle body, and the segments collectively form continuous coverage of the entire working area boundary
Solution Approach 2:
The patent employs adjustable lighting units that can dynamically modify their projection distance and orientation. This adjustability allows the system to optimize the balance between warning visibility (requiring greater distance) and alignment precision (requiring closer positioning), enabling flexible adaptation to different operating conditions and vehicle configurations
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
Enhances safety by clearly delineating the working area, reducing the risk of accidents and injuries by visually alerting road users to maintain a safe distance, while minimizing interference with non-work mode operations.
Implementation Method 1
at least one lighting unit (8, 9, 15) for projecting light markings (10, 11, 12, 17, 18, 19), which is/which are designed to generate a light marking (10, 11, 12, 17, 18, 19) on the contact surface
Data Source
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AI summary
The invention relates to a commercial vehicle (1) comprising a work unit arranged on the commercial vehicle (1) and at least one lighting unit (8, 9, 15) for projecting light markings (10, 11, 12, 17, 18, 19), which is configured to generate a light marking (10, 11, 12, 17, 18, 19) on the contact surface delimiting a work area of the commercial vehicle (1). This alerts other road users to the work area and enables them to observe it. This prevents personal injury and property damage.