Inflatable Solar Lantern with Reflective Light Diffusion
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Solution Overview
Problem
Existing solar-powered lighting devices, such as those described in US 2012/0120642 and US 2012/0224359, have inconvenient shapes and lack effective light-diffusing capabilities, limiting their usability and effectiveness for providing reliable and efficient lighting, especially in areas with unreliable access to electricity.
Innovation Solution
A collapsible solar-powered lantern with a translucent, inflatable housing, a rechargeable lithium-ion battery, LED lights, and a circuit board, featuring reflective surfaces and a solar panel for charging, which can be laid in sunlight to recharge and provides adjustable lighting levels through a power switch, offering improved light diffusion and portability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Shape
If existing solar-powered lighting devices are used, then they provide basic lighting function, but they have inconvenient shapes and lack effective light-diffusing capabilities
Solution Approach 1:
The patent employs a spherical housing design that provides convenient handling and portability. The spherical shape allows the device to be easily carried and positioned, while also enabling effective light diffusion in all directions. This curved geometry resolves the contradiction by making the device both shape-convenient and highly usable for portable lighting applications.
2Illumination intensity
If existing solar-powered lighting devices are used, then they provide basic lighting function, but they lack effective light-diffusing capabilities
Solution Approach 1:
The patent utilizes a translucent housing material that diffuses light effectively while maintaining a simple overall structure. The material properties themselves provide the light-diffusing capability without requiring complex internal structures or additional components, thus achieving effective light diffusion without increasing device complexity.
3Weight of moving object
If the lantern is made portable and collapsible, then it improves portability, but it requires inflation mechanism adding complexity
Solution Approach 1:
The patent employs a simple pneumatic inflation system using an inflatable housing that can be filled with air to create a portable, collapsible lantern. This approach provides excellent portability when deflated and maintains structural integrity when inflated, with the inflation mechanism being simple enough not to significantly increase device complexity.
Solution Approach 2:
The patent utilizes a flexible, collapsible housing that can be compressed for portability and inflated for use. This flexible shell design allows the lantern to be easily stored and transported while maintaining its functional form during operation, effectively balancing portability requirements with structural needs.
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 provides a cost-effective, energy-efficient, and portable lighting solution that can be fully charged in 4-8 hours, offering over 6 hours of light, illuminating a 10 square foot area with adjustable brightness, suitable for both developing and developed regions as a green alternative.
Implementation Method 1
a solar panel; The rechargeable battery is recharged by laying the collapsible lantern housing in direct sunlight for 4 to 5 hours for complete charging.
Implementation Method 2
LED lights; A planar array of light emitting diodes (LEDs) is arranged on a printed circuit board on one end wall.
Implementation Method 3
reflective surfaces on the end walls face each other to increase the diffused light from the device.
Data Source
AI summary
A solar powered lamp is provided with flat ends and a flexible housing, such that the housing can be inflated to form a free standing cylinder. A solar panel faces outward on one of the flat ends for recharging a low-profile rechargeable battery which, under the control of a printed circuit panel, powers an array of LEDs, which point into the lamp housing. Reflective surfaces, facing each other on opposite inside end walls of the lamp, maximize the diffusion of light from the LEDs. The lamp is a durable, portable, long light lighting solution for those who live off the electric power grid, victims of disaster, and the like.