Lightable Cooling Fan Uniform Circular Lighting via Light-Guiding Frames
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Solution Overview
Problem
Conventional heat-dissipating fans with lighting effects suffer from non-uniform brightness due to light sources being shaded by the fan frame or blades, resulting in discontinuous lighting.
Innovation Solution
A lightable cooling fan structure featuring a fan body with a circuit board equipped with side-light lighting elements, a first light-guiding frame with a reflection layer, and a second light-guiding frame that scatters light to create a uniform circular lighting effect, using side-light lighting elements as passing paths and fill light design to overcome shading issues.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Illumination intensity
If conventional heat-dissipating fans with lighting effects are used, then the fan can dissipate heat and provide lighting, but the light sources are shaded by the fan frame or blades resulting in non-uniform brightness and discontinuous lighting
Solution Approach 1:
The patent introduces light-guiding frames as intermediary structures between the light sources and the external environment. These frames guide and distribute the light from the LEDs around the fan assembly, preventing direct shading by blades or frame components while maintaining uniform illumination. The light-guiding frames act as mediators that redirect light paths to achieve continuous circular lighting effect.
Solution Approach 2:
The patent transitions from point-source lighting to a distributed linear lighting arrangement by positioning LEDs along the rim of the circuit board and using light-guiding frames to extend the light distribution in multiple dimensions. This creates a continuous circular light source rather than discrete point lights, improving uniformity and aesthetic appeal.
2Illumination intensity
If additional light-guiding frames and reflection layers are added to achieve uniform lighting, then the lighting uniformity improves, but the device complexity increases
Solution Approach 1:
The light-guiding frames serve multiple functions simultaneously: they structurally support the circuit board and lighting elements, guide and distribute light uniformly, and prevent shading from fan components. The reflection layer on the bottom of the first light-guiding frame also serves dual purposes by reflecting light upward for uniform distribution and structurally completing the light-guiding enclosure.
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 achieves a uniform and continuous circular lighting effect, enhancing the aesthetic appeal and operational convenience of the fan while maintaining its heat-dissipating functionality, offering a competitive market advantage with improved design beauty and functionality.
Implementation Method 1
the lighting reflection layer reflects the light sources of the side-light lighting elements to pass through an edge and a top of the first light-guiding frame and the second light-guiding frame
Implementation Method 2
uniformly scattering and forming a circular light source
Data Source
AI summary
In a lightable fan structure for dissipating heat, a circuit board is arranged in a fan body, and the circuit board is sequentially provided with a first light-guiding frame and a second light-guiding frame, and the circuit board is provide with a plurality of side-light lighting elements. Every two side-light lighting elements is reversely arranged and spaced on a rim of the circuit board. A bottom of the first light-guiding frame is annually provided with a lighting reflection layer, and the side-light lighting elements are arranged below the lighting reflection layer. The lighting reflection layer reflects light sources of the side-light lighting elements to pass through an edge and a top of the first light-guiding frame and the second light-guiding frame, thereby uniformly scattering and forming a circular light source.