Interchangeable Dome Lantern for Image Projection
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Solution Overview
Problem
Conventional camp lanterns cannot function as both a light source and an entertainment device, requiring separate amusement devices and power sources for entertainment, which is inconvenient and burdensome for campers.
Innovation Solution
A portable, battery-powered camp lantern with a frosted dome and interchangeable opaque domes that can be converted into an image projector by substituting the frosted dome, allowing the device to project lighted images onto a ceiling or other overhead surfaces using transparent design elements.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If conventional camp lanterns are used for illumination, then the surrounding area is lit, but the device cannot provide entertainment functionality
Solution Approach 1:
The lantern is designed to perform multiple functions: it can illuminate the surrounding area using the frosted dome, and it can project images for entertainment by replacing the frosted dome with an image projection dome. This multi-functionality resolves the contradiction by allowing a single device to serve both illumination and entertainment purposes without requiring separate devices.
Solution Approach 2:
The lantern system is divided into modular components: a base lantern unit with LED light source and battery, a frosted dome for illumination mode, and interchangeable image projection domes for entertainment mode. This segmentation allows the user to switch between functions by simply replacing the dome component, maintaining simplicity while achieving versatility.
2Adaptability or versatility
If separate amusement devices are transported for entertainment, then entertainment functionality is provided, but the burden of transporting and recharging multiple devices increases
Solution Approach 1:
The invention merges the entertainment functionality into the existing lantern structure by integrating the image projection capability through interchangeable domes that use the lantern's existing LED light source and battery power. This eliminates the need to transport separate entertainment devices and their power sources, as the lantern itself becomes the entertainment device.
Solution Approach 2:
The lantern serves as both an illumination device and an entertainment device through the use of interchangeable domes. The same power source and light source are used for both functions, eliminating the need for additional devices and reducing transport burden.
3Adaptability or versatility
If the frosted dome is replaced with an opaque dome containing transparent portions, then the lantern projects images, but the illumination capability is modified
Solution Approach 1:
The image projection dome is designed with transparent portions arranged to form images while the rest of the dome remains opaque. When the LED light source is activated, light passes through the transparent portions to project images onto the ceiling, while the opaque portions block light to create the image contrast. This local differentiation of transparency allows the dome to serve both as a light modulator for projection and maintains sufficient light output for entertainment purposes.
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 lantern provides both illumination and entertainment capabilities with a single device, eliminating the need for additional entertainment equipment and power sources, offering a convenient and versatile solution for campers.
Implementation Method 1
When the LED module is activated, light only passes through the transparent portions to project the design elements onto a tent or cabin ceiling
Implementation Method 2
A frosted, semispherical cover that allows the lantern to be used as a portable light source
Data Source
AI summary
A camp lantern includes a housing having an outer wall, a lower surface, and an upper surface with an LED module positioned thereon. A U-shaped handle attached to opposing sides of the outer wall allows the lantern to be easily transported to remote locations. Removably superimposable on the LED module is a frosted, semispherical cover that allows the lantern to be used as a portable light source. Any one of a plurality of interchangeable, substantially opaque covers with transparent, thematic design elements can be substituted for the frosted cover to convert the camping lantern to an image projector. When the LED module is activated, light only passes through the transparent portions to project the design elements onto a tent or cabin ceiling.