Unmanned Helicopter LED Cover with Segmented Light Paths
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Solution Overview
Problem
Conventional display devices for unmanned helicopters provide poor visibility from the sides due to the orientation of LEDs, which limits the operator's ability to recognize the helicopter's status and abnormalities from a wider range.
Innovation Solution
A display device design featuring a light source portion with LEDs and a cover portion that includes a straight-through portion for unscattered light and scatter portions to redirect light, enhancing visibility from both distance and various angles by allowing light to travel straight and scatter accordingly.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Illumination intensity
If LEDs are disposed in the same orientation (facing rearward), then visibility from the rear at a distance is improved, but visibility from the sides is decreased
Solution Approach 1:
The cover portion is segmented into three functional regions: a straight-through portion for unscattered light transmission, and first and second scatter portions for light diffusion. This segmentation allows different portions of light from the LEDs to be directed differently, enabling both rear visibility (through straight-through portion) and side visibility (through scatter portions) to be improved simultaneously
Solution Approach 2:
Different regions of the cover portion are given different optical properties: the straight-through portion maintains high light transmission without scattering, while the first and second scatter portions have light-scattering characteristics. This local differentiation of optical quality enables the cover to perform multiple functions (rear visibility and side visibility) with a single integrated structure
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
The design improves visibility from a distance and across a wider range, ensuring the operator can clearly recognize the helicopter's status and abnormalities from multiple directions, thereby enhancing operational safety.
Implementation Method 1
the straight-through portion allows light emitted from the light source portion to travel straightly
Implementation Method 2
the side wall portion includes a first scatter portion which scatters the light emitted from the light source portion
Data Source
AI summary
A display device includes a light source portion including a plurality of LEDs, and cover portions that cover the light source portion. Each cover portion includes an opposed portion and a side wall portion. The opposed portion includes a straight-through portion which allows light emitted from the light source portion to travel straightly, whereas the side wall portion includes a first scatter portion which scatters the light emitted from the light source portion. A portion of the light emitted from the light source portion to the straight-through portion leaves the cover portion to the outside without being scattered. A different portion of the light emitted to the straight-through portion repeats reflection inside the opposed portion, reaches the side wall portion, and is scattered in the first scatter portion. Of the light emitted from the light source portion, a portion of the light reflected by an inner surface of the cover portion is directed to the side wall portion, and then scattered in the first scatter portion.