Outdoor Advertising Frame Stabilization Against Wind Loads
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Solution Overview
Problem
Current outdoor advertising medium support systems are either too heavy and expensive or lack the necessary wind resistance and quick assembly qualities, while indoor systems are not suitable for outdoor use due to fragility and lack of ground fixation.
Innovation Solution
A device with a frame of four uprights, each comprising at least two parallel tubes interconnected by spacers, featuring stabilizing means with support elements and junction elements that connect to the frame and ground, providing resistance to wind and weather, and allowing for efficient assembly on various ground types.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If the number of parallel tubes per upright is increased to three or four tubes to withstand high winds, then wind resistance is improved, but weight and production cost increase significantly
Solution Approach 1:
The device is divided into modular components: uprights with 2 tubes each, and separate stabilizing means with support elements. This segmentation allows the main structure to remain lightweight while adding stability only where needed at the base, rather than reinforcing the entire structure with additional tubes throughout.
Solution Approach 2:
The invention adds stabilizing means that extend perpendicular to the plane of the frame, introducing a third spatial dimension for stability. The support elements project outward from the base of side uprights, creating lateral stability without requiring additional vertical tubes within the frame plane.
2Strength
If the number of parallel tubes per upright is increased to three or four tubes to withstand high winds, then wind resistance is improved, but production cost increases due to three times more spacers
Solution Approach 1:
The structure is segmented into the main frame (with 2-tube uprights) and separate stabilizing means. This allows the expensive multi-tube configuration to be avoided in the main structure while achieving wind resistance through the added stabilizing elements at the base.
Solution Approach 2:
Instead of uniformly increasing tube count throughout the structure, the invention applies additional stabilizing components locally at the base of side uprights. This localized approach provides wind resistance where it is most needed (at the foundation level) without the cost of adding tubes to the entire structure.
3Weight of moving object
If indoor device design with two parallel tubes per upright is used, then weight and cost are reduced, but wind resistance and ground fixation capability are insufficient for outdoor use
Solution Approach 1:
The stabilizing means introduce elements that extend perpendicular to the frame plane, adding lateral stability in a third dimension. The support elements project outward from the base, creating a wider footprint and resistance to lateral wind forces that the original 2D frame cannot provide alone.
Solution Approach 2:
The stabilizing means act as intermediary elements between the lightweight frame and the ground. The support elements provide the connection interface to the ground surface, mediating the transfer of forces between the light frame structure and the external environment, enabling outdoor use without compromising the frame's lightweight design.
Data Source
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AI summary
The invention concerns a device for retaining and fixing outdoors a large size advertising medium for example in the form of a fabric, said device comprising a frame (1) defined by four posts, two lateral posts (2, 3), an upper post and a lower post (5), each of said posts (2, 3, 5) consisting of two parallel tubes (6, 7) made of appropriate material and assembled together via spacers (8, 8'). Said retaining device is characterized in that it comprises stabilizing means (100, 100') arranged at the base of the frame (1) and arranged such that the device is capable of withstanding forces exerted by bad weather conditions, and in particular by the wind.