Dual-Layer Shading Curtain for Variable Light Transmission
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Solution Overview
Problem
Conventional shading devices for vehicles lack the ability to provide a variable shading effect, relying on single-layer curtains with constant light transmission properties.
Innovation Solution
A shading device comprising a dual-layer shading curtain with different light transmission areas, and a drawing mechanism allowing the layers to move relative to each other, adjusting light transmission properties between maximum and minimum states.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a single-layer shading curtain with constant transmission property is used, then the device complexity is low, but the adaptability is insufficient
Solution Approach 1:
The shading curtain is divided into multiple independent layers (first shading layer and second shading layer), each with different light transmission properties. This segmentation allows each layer to function independently while collectively providing variable shading effects, resolving the contradiction between adaptability and complexity by breaking down the single complex layer into simpler manageable layers.
Solution Approach 2:
The patent introduces a drawing device with first and second drawing members that can move relative to each other, enabling the shading layers to dynamically adjust their positions and overlap. This dynamic mechanism transforms the static single-layer curtain into a variable system that can adapt light transmission properties according to different conditions.
2Adaptability or versatility
If a dual-layer shading curtain with drawing mechanism is used, then the adaptability is improved, but the device complexity increases
Solution Approach 1:
The drawing device merges the functions of two drawing members into a coordinated system that controls both shading layers simultaneously. By combining the drawing functions and integrating them with a single control mechanism, the patent reduces the operational complexity despite having multiple layers, allowing both layers to be adjusted together to achieve desired light transmission states.
3Use of energy by moving object
If the shading curtain is switched between maximum and minimum light transmission states, then the energy efficiency is improved, but the ease of operation decreases
Solution Approach 1:
The patent employs shading layers with different optical properties (analogous to color changes) that can be positioned to create maximum or minimum light transmission states. By designing layers with distinct optical characteristics and using the drawing mechanism to position them appropriately, the system achieves energy-efficient light control while maintaining relatively simple operation through the coordinated drawing members.
Data Source
AI summary
A shading device includes a shading curtain and a drawing device. The shading curtain includes a first and second shading layer that have at least two types of light transmission areas with different light transmission properties. The drawing device includes a first and second drawing member. The first drawing member is connected with the first shading layer and is configured to draw the first shading layer. The second drawing member is connected with the second shading layer and is configured to draw the second shading layer. The first and second drawing members are movable relative to each other between a first relative position and a second relative position. The first and the second shading layers parallelly move relative to each other. In the first relative position, the shading curtain has a first light transmission property, and in the second relative position, the shading curtain has a second light transmission property.