Vehicle Lamp Beam Shutter With Impeller Defogging
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Solution Overview
Problem
Current vehicle lamp defogging methods, such as heating devices and fans, either increase internal temperature, occupy more space, or are inefficient in removing fog, posing safety hazards and increasing costs.
Innovation Solution
A high beam and low beam switching device with a light shielding plate, impeller, and driving mechanism that rotates to form air convection, utilizing a limiting mechanism and spring assembly to switch beams and remove fog without increasing the lamp's size or internal temperature.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If a heating device is installed inside the vehicle lamp to remove fog, then the fog can be evaporated, but the internal temperature becomes too high causing safety hazards
Solution Approach 1:
The patent extracts the fog removal function from the traditional heating approach and relocates it to the air convection system. The impeller-driven air flow extracts moisture and fog particles from the lamp housing through convection currents, eliminating the need for high-temperature heating and thus resolving the safety hazard while maintaining effective fog removal
Solution Approach 2:
The patent replaces the thermal field (heating device) with a mechanical field (impeller-driven air convection system). By using mechanical air movement to create convection currents, the system removes fog through physical air flow rather than thermal evaporation, thereby avoiding excessive temperature rise
2Object-affected harmful factors
If a fan is installed inside the vehicle lamp to remove fog, then the fog can be dispersed, but the fan occupies more space and increases installation cost
Solution Approach 1:
The patent applies multi-functionality by integrating the impeller into the existing high beam/low beam switching device structure. The same driving mechanism that rotates the light shielding plate also drives the impeller for fog removal, eliminating the need for a separate fan motor and reducing the overall space requirement
Solution Approach 2:
The patent merges the defogging function with the beam switching mechanism by combining the impeller and light shielding plate into a single integrated structure driven by one motor. This consolidation eliminates redundant components and reduces the space occupied compared to separate fan installations
3Object-affected harmful factors
If heating is used to evaporate water inside the vehicle lamp, then fog forms temporarily, but when temperature decreases the water vapor liquefies again forming fog
Solution Approach 1:
The patent applies preliminary action by continuously circulating air through the lamp housing before fog can accumulate. The impeller-driven convection system maintains constant air movement, preventing water vapor from condensing into fog in the first place, rather than attempting to evaporate existing fog after it forms
Solution Approach 2:
The patent replaces the thermal field (heating) with a mechanical field (air convection). By using mechanical air circulation to continuously move moisture-laden air out of the lamp housing, the system achieves reliable and permanent fog prevention without the cyclic condensation problem inherent in thermal methods
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
Effectively removes fog and improves heat dissipation in vehicle lamps, allowing safe and efficient switching between high and low beams without enlarging the lamp's footprint.
Implementation Method 1
A high beam and low beam switching device with a light shielding plate, impeller, and driving mechanism that rotates to form air convection
Implementation Method 2
a light shielding plate, an impeller and a driving device that is used for driving the light shielding plate and the impeller to rotate forwards and backwards
Data Source
AI summary
A high beam and low beam switching device, a vehicle lamp comprising the high beam and low beam switching device, and a vehicle, the device comprising a light shielding plate, an impeller, and a driving device that is used for driving the light shielding plate and the impeller to rotate forwards and backwards; and a limiting mechanism used for limiting the rotation angle of the light shielding plate is provided between the light shielding plate and the driving device. The high-beam and low-beam switching device can achieve the successful switching of a high beam and a low beam, and the use of a vehicle lamp will not be affected; mist or moisture in the interior of the vehicle lamp can be removed, and meanwhile, the heat dissipation effect of the vehicle lamp can be improved, and the space that is occupied by the vehicle lamp will not be increased.