Solar Light Stick With Reflective Flakes for Diffused Illumination
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Solution Overview
Problem
Existing solar-powered lights for lawns and gardens lack efficient unattended operation and aesthetic dispersion of light, as they often require manual activation and do not effectively utilize ambient light conditions for optimal illumination.
Innovation Solution
A solar light stick with a supporting stake, rechargeable battery, LEDs, and a tube body made of light transmissive material, featuring a solar panel for charging, a user-operable switch, and interior reflective flakes for light dispersion, which automatically activates in low-light conditions and provides adjustable lighting modes.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If solar-powered lights require manual activation, then device complexity is reduced, but ease of operation deteriorates and productivity decreases
Solution Approach 1:
The solar light stick automatically detects ambient light levels using the solar panel as a light sensor and activates the LEDs without user intervention. The system serves itself by autonomously determining when to operate based on light conditions, eliminating the need for manual switching while maintaining simple operation through automatic functionality.
Solution Approach 2:
The solar panel serves dual functions: generating electrical power to charge the battery and detecting ambient light levels to control LED activation. This multi-functionality enables automatic operation without adding significant complexity, as the same component performs both energy generation and sensing tasks.
2Adaptability or versatility
If solar panel is used only for charging, then energy efficiency is maximized, but adaptability deteriorates
Solution Approach 1:
The solar panel functions as both a power generation device for charging the battery and a light sensing device for detecting ambient light conditions. This dual functionality allows the system to adapt to different lighting environments automatically while maintaining efficient energy utilization, as the panel only triggers LED operation when ambient light levels indicate darkness.
3Illumination intensity
If light is emitted directly from LEDs, then illumination intensity is maximized, but aesthetic quality deteriorates
Solution Approach 1:
Reflective flakes are distributed throughout the translucent tube body to create localized reflection and scattering centers. These flakes are positioned within the light path to disperse LED light in multiple directions, creating a soft, diffused glow that enhances aesthetic quality while maintaining sufficient illumination intensity for the application.
Solution Approach 2:
The translucent tube body with embedded reflective flakes acts as an intermediary between the LEDs and the external environment. It diffuses the direct LED light into a softer, more aesthetically pleasing glow while still providing adequate illumination, mediating between the intense point-source LED output and the desired ambient lighting effect.
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
Enables unattended operation with automatic activation in low light, providing efficient and aesthetically dispersed lighting for lawns and gardens, enhancing visibility and user convenience with adjustable lighting options.
Implementation Method 1
The solar panel charges the rechargeable battery which, in turn, provides power to the LEDs
Implementation Method 2
Suspended objects, such as reflective flakes help to disperse light from the LEDs away from the tube body
Data Source
AI summary
A solar light stick for use in illuminating and decorating a lawn, garden or pathway. The solar light stick includes a supporting stake, a solar panel, a rechargeable battery, at least one LED, and a tube body. The tube body contains a light transmissive material that may be transparent or translucent. The solar panel charges the rechargeable battery which, in turn, provides power to the LEDs. The LEDs are positioned to provide light to the interior of the tube body. As such, the LEDs may be located within a recess in the tube body. Reflective flakes dispersed within the tube body reflect and disperse light from the LEDs in a decorative manner.