Vacuum Cleaner Head Laser Diode Lighting to Reduce Power and Heat
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Solution Overview
Problem
Existing vacuum cleaners with LED lighting systems consume high power and generate significant heat, requiring heat dissipation devices, and do not effectively illuminate debris for efficient cleaning.
Innovation Solution
Utilizing a laser diode emitting green light to illuminate debris, positioned at a shallow angle close to the work surface, with a beam shaping mechanism to enhance visibility and reduce power consumption.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Illumination intensity
If a light emitting diode (LED) is used to illuminate the floor surface, then the illumination intensity is sufficient, but the power consumption is high and significant heat is generated requiring heat dissipation devices
Solution Approach 1:
The patent changes the fundamental parameter of the light source from LED to laser diode, which has superior power-to-light conversion efficiency. This parameter change resolves the contradiction by providing sufficient illumination intensity while dramatically reducing power consumption and heat generation, eliminating the need for heat dissipation devices
2Illumination intensity
If a light emitting diode (LED) is used to illuminate the floor surface, then the illumination intensity is sufficient, but heat dissipation devices are required
Solution Approach 1:
The patent changes the light source parameter from LED to laser diode, which has significantly better power-to-light conversion efficiency. This resolves the heat generation issue by providing the same illumination intensity with much lower thermal output, eliminating the need for heat dissipation devices such as fans or heat sinks
3Loss of information
If the cleaner head is equipped with lighting system, then debris visualization is improved, but the device complexity increases
Solution Approach 1:
The patent extracts and eliminates the heat dissipation devices (fans, heat sinks) that were required with LED systems. By using laser diodes with superior efficiency, the lighting function is maintained for improved debris visualization while removing the complex thermal management subsystems
Solution Approach 2:
The laser diode serves multiple functions: it provides illumination for debris visualization and does so without requiring separate heat dissipation devices. This multi-functionality reduces overall device complexity while maintaining the visualization benefit
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 laser diode system reduces power consumption and heat generation, providing brighter illumination of debris, improving cleaning efficiency and reducing the time required to clean a surface.
Implementation Method 1
a laser diode for emitting a laser beam
Implementation Method 2
emitting green light to illuminate debris
Data Source
Figure 1
Figure 2
Figure 3
AI summary
A cleaner head for a vacuum cleaner includes a laser diode for illuminating debris located upon a region of a work surface located in front of the cleaner head with green light.