Light Emitting Fan Hub Light Guiding Component
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Solution Overview
Problem
Conventional light emitting fans struggle to uniformly project light onto a decorative board due to the focusing nature of light emitting diodes, which can increase the fan's size when attempting to address this issue, making it unsuitable for thin electronic devices.
Innovation Solution
Incorporating a light guiding component integrated on the hub of the impeller, which diffuses and uniformly directs light emitted by the light emitting components onto a decorative board, maintaining a compact design.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Illumination intensity
If the distance between the light emitting diode and the hub or decorative board is increased to achieve uniform light projection, then the light uniformity is improved, but the overall size of the fan increases
Solution Approach 1:
The patent introduces a light guiding component as an intermediary between the light emitting diode and the decorative board. This component includes a light receiving surface that receives light from the LED and a light emitting surface that projects light onto the decorative board, thereby achieving uniform light distribution without increasing the fan size. The light guiding component acts as a mediator that transforms the focused light from the LED into uniform illumination on the decorative surface.
2Illumination intensity
If a light guiding component is introduced to achieve uniform light projection, then the light uniformity is improved, but the device complexity increases
Solution Approach 1:
The light guiding component is integrated with the hub structure, where the hub serves as both the rotational component and the mounting structure for the light guiding component. The light receiving surface is formed on the hub, and the light emitting surface is positioned on the outer peripheral surface of the hub. This merging of functions reduces the number of separate components and simplifies the overall structure while achieving uniform light projection.
3Volume of moving object
If the light emitting diode is positioned close to the hub to maintain compact size, then the fan size is reduced, but the light projection uniformity deteriorates
Solution Approach 1:
The light guiding component serves as a mediator that allows the light emitting diode to be positioned close to the hub while still achieving uniform light projection on the decorative board. The component includes a light receiving surface that receives light from the LED and a light emitting surface that distributes the light uniformly onto the decorative board, thereby decoupling the positioning constraints from the light uniformity requirement.
Solution Approach 2:
The patent changes the optical parameters by introducing a light guiding component with specific optical properties. The component transforms the focused light from the LED into diffuse uniform illumination through its light receiving and light emitting surfaces, effectively changing the light distribution pattern without altering the physical distance between the LED and the decorative board.
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
Achieves a uniform light emission effect on the decorative board while maintaining a compact size, suitable for thin electronic devices.
Implementation Method 1
the light guiding component, and light emitted by the light emitting component is incident on the light guiding component so as to be diffused
Data Source
AI summary
A light emitting fan includes a frame, a circuit board, an impeller, a decorative board, a light emitting component, and a light guiding component. The circuit board is disposed on the frame. The impeller includes a hub and blades connected to the hub. The insertion hole has an end connected to an outer top surface of the hub and extends towards the circuit board. The decorative board is fixed to the frame and located farther away from the circuit board than the outer top surface of the hub. The light emitting component is disposed on the circuit board. The light guiding component is inserted into the insertion hole of the hub. Light emitted by the light emitting component is incident on the decorative board via the light guiding component.