Concession Trailer LED Screen Layout for Bridge Clearance
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Solution Overview
Problem
Existing food concession vehicles with raised and lowered advertising surfaces suffer from gaps between LED display screens, preventing the creation of a single continuous image.
Innovation Solution
A portable food concession trailer equipped with two LED display screens, each with a planar surface area of at least 9 square feet, and an adjustment mechanism that allows the screens to be positioned coplanar or at an angle to create a single continuous image while allowing the vehicle to pass under bridges.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Area of stationary object
If the advertising surface is raised above 13.5 feet to provide larger display area and better visibility, then the advertising effectiveness is improved, but the vehicle cannot pass under bridges with standard clearance
Solution Approach 1:
The advertising surface is made dynamically adjustable in height through a mechanical lifting system. The surface can be raised above 13.5 feet for optimal advertising display and lowered below 13.5 feet for bridge clearance, allowing the vehicle to adapt to different operational conditions. This dynamic adjustment capability resolves the contradiction between needing large display area and maintaining bridge passage ability.
2Adaptability or versatility
If the advertising surface is divided into multiple sections for height adjustment, then the vehicle can pass under bridges, but gaps between sections prevent continuous image display
Solution Approach 1:
The adjustable support mechanism dynamically changes the vertical position of the first advertising surface section relative to the second section. When lowered for bridge clearance, the support mechanism maintains precise positioning to minimize gaps. When raised for advertising, the sections are positioned to provide optimal display area while maintaining image continuity through the adjustable positioning capability.
Solution Approach 2:
The vertical distance between the first and second advertising surface sections is made variable through the adjustable support mechanism. By changing this parameter dynamically between a first distance (for bridge clearance) and a second distance (for optimal advertising display), the system achieves both bridge passage capability and continuous image display capability.
3Manufacturing precision
If the LED display screens are positioned close together to create continuous image, then image quality is improved, but the structure becomes more complex
Solution Approach 1:
The adjustable support mechanism serves multiple functions: it positions the first advertising surface section at different vertical distances from the second section to enable both bridge clearance and optimal advertising display, and it maintains precise positioning to ensure image continuity. This multi-functional design reduces the need for separate mechanisms, thereby reducing overall system complexity while achieving the desired image quality.
Data Source
AI summary
A food concession vehicle may include a food processing area, two LED display screens and an adjustment mechanism that can move the LED display screens between a first position where the two screens are coplanar and too high to pass under a bridge and a second position where the two screens are able to pass under a bridge. When in the first position, the two screens may be able to provide a single continuous image.