Rotating Cylindrical Display for 360-Degree Pedestrian Signaling
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Current lighting devices for mobility vehicles require a large number of light sources to achieve high resolution and brightness for 360-degree visibility, leading to increased manufacturing costs and size, which is inefficient for communication with pedestrians.
Innovation Solution
A cylindrical lighting device with a rotary body, light guides, and a controller that uses a reduced number of light sources to create an afterimage effect by rotating the rotary body and controlling light emission through the light guides, ensuring visibility and reducing the overall size and cost.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Illumination intensity
If a circular display with high resolution and brightness is applied to ensure 360-degree visibility, then visibility is improved, but the number of light sources increases to 1,500 to 2,500, increasing manufacturing costs and device size
Solution Approach 1:
The patent applies the dynamics principle by implementing a rotating display structure where a limited number of light sources (e.g., 16 light sources) are arranged on a rotary body that rotates to illuminate different segments of the circular display at different times. This dynamic approach allows a small number of light sources to cover the entire 360-degree display area through sequential illumination, resolving the contradiction between brightness and the number of light sources.
Solution Approach 2:
The patent employs periodic action through the rotation of the rotary body, which periodically brings different light sources into position to illuminate different angular segments of the circular display. The controller activates light sources in a periodic sequence synchronized with the rotation, enabling the display to maintain high brightness and 360-degree visibility using only a limited number of light sources that are reused cyclically.
2Manufacturing precision
If all light sources are disposed on the entire peripheral surface of the circular display to achieve high resolution, then image quality is improved, but the device size and manufacturing complexity increase
Solution Approach 1:
The rotating display structure enables high-resolution image display with reduced device complexity by dynamically positioning a limited number of light sources. The rotary body rotates to bring different light sources into alignment with different angular positions of the circular display, allowing high-resolution images to be constructed sequentially over time rather than requiring simultaneous illumination from numerous light sources distributed across the entire periphery.
Solution Approach 2:
The patent adds the temporal dimension to the display system by using rotation over time. Instead of requiring all light sources to be present and active simultaneously across the circular display periphery (spatial dimension only), the system uses a limited number of light sources that are positioned in different angular locations at different times through rotation, effectively using time as an additional dimension to achieve high resolution with fewer physical components.
3Illumination intensity
If 1,500 to 2,500 light sources are used to cover the entire area of the circular display, then visibility and resolution are improved, but manufacturing costs increase
Solution Approach 1:
The rotating display mechanism allows a small number of light sources to achieve the visibility equivalent of thousands of static light sources. By rotating the rotary body and sequentially activating light sources at different angular positions, the system creates the perception of a fully illuminated high-resolution circular display using only a limited number of physical light sources, dramatically reducing manufacturing costs.
Solution Approach 2:
The system creates multiple virtual light source positions through the rotation and sequential activation of a limited number of physical light sources. Each light source effectively 'copies' the function of multiple light sources at different angular positions over time, allowing the display to achieve high visibility and resolution without the expense of installing 1,500 to 2,500 actual light sources.
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 solution effectively implements images for communication with pedestrians using a reduced number of light sources, improving visibility, durability, and reliability while minimizing the device's size and manufacturing costs.
Implementation Method 1
a plurality of light guides disposed in the internal space of the rotary body and each having one end penetrating a peripheral surface of the rotary body from inside to outside and the other end extending downward
Data Source
AI summary
An image for communication with outside pedestrians is implemented by an afterimage effect by means of a cylindrical display installed at an upper end of a mobility vehicle, and visibility is ensured. In addition, the number of light sources for implementing the image is reduced, an overall size of a lighting device is reduced, and durability and reliability are improved because there is no direct mechanical contact.