Light Emitting Fan Hybrid Reflective Guiding Mechanism
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Solution Overview
Problem
Existing light-emitting cooling fans fail to effectively utilize light from laser sources, which is harmful to human eyes and not visibly transferred through light guides, and lack innovative designs to satisfy evolving customer needs.
Innovation Solution
A light-emitting cooling fan design incorporating a hybrid of light-reflective and light-guiding mechanisms, featuring a reflector and light guiding member on a rotatable impeller with a light source, where the light is reflected radially onto fan blades, creating a halo visual effect through fiber optic guides or light rods, and adjustable reflector positioning for intensity control.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Illumination intensity
If laser light source is used to provide bright light, then illumination intensity is improved, but harmful factors to human eyes worsen
Solution Approach 1:
The patent converts the harmful laser light into a beneficial visual effect by using a reflector and light guiding member to transform the laser beam into a safe halo effect that appears as a soft glow rather than direct laser exposure, eliminating eye safety risks while maintaining visual appeal
Solution Approach 2:
The patent introduces intermediate components (reflector and light guiding member) between the laser source and the viewer's eye, which mediate the light transmission to convert dangerous direct laser exposure into safe indirect illumination while preserving brightness
2Loss of energy
If light guide is used to transmit light, then light transmission is achieved, but visibility of transmitted light worsens
Solution Approach 1:
The patent extracts light from the light guide at specific locations using a light extracting member with light extracting portions, allowing the light to be visible where needed while maintaining efficient transmission through the light guide structure
3Device complexity
If simple light guide structure is used, then device complexity is reduced, but visual effect quality worsens
Solution Approach 1:
The patent segments the light guiding function into distinct components (light guiding member with multiple light extracting portions) to achieve complex visual effects while keeping each individual component relatively simple in structure
Solution Approach 2:
The patent combines multiple functions (light guiding, light reflecting, and light extracting) into an integrated system where the light guiding member works together with the reflector to produce enhanced visual effects without proportionally increasing complexity
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 efficiently transfers light into a visually appealing halo effect for human eyes, enhancing customer satisfaction by providing both cooling and visual innovation while ensuring safe, controlled light output.
Implementation Method 1
The reflector is disposed underneath the light source, and configured for reflecting light from the light source in a radial direction of the hub
Implementation Method 2
The light guiding member is disposed underneath the light source, and configured for receiving the light from the reflector and leading the light to travel along the radial direction of the hub to outside of the hub
Data Source
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AI summary
A light-emitting cooling fan includes a base, a bracket arranged above the base, an impeller located in between the base and the bracket, a light source disposed on the bracket, a reflector disposed on a hub of the impeller and a light guiding member. The light source points downward to the hub of the impeller. The reflector is disposed underneath the light source, and configured for reflecting light from the light source in a radial direction of the hub. The light guiding member is disposed underneath the light source, and configured for receiving the light from the reflector and leading the light to travel along the radial direction of the hub to outside of the hub and then hit one of fan blades of the impeller. In this way, rotation of the impeller transfers the light into a halo visual illusion for human eyes.