Vehicle Interior Monitoring Illumination Unit Cooling
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Solution Overview
Problem
Existing vehicle interior monitoring devices cannot effectively monitor a driver's condition, such as drowsiness or distraction, and suffer from heat dissipation issues with their illumination units, leading to potential heat load and reduced lifespan.
Innovation Solution
A vehicle interior monitoring device is configured with an imaging unit to capture the driver's face and an illumination unit positioned adjacent to an air flow duct, allowing air-conditioning air to cool the illumination unit, thereby efficiently dissipating heat and ensuring clear monitoring of the driver's condition.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If the illumination unit is arranged on the image display means, then the device structure is compact, but heat dissipation is insufficient causing heat load and reduced lifespan
Solution Approach 1:
The illumination unit is repositioned from a two-dimensional arrangement on the display means to a three-dimensional spatial arrangement adjacent to the air flow duct, utilizing vertical and lateral space to achieve effective heat dissipation while maintaining compact overall device structure
2Device complexity
If the illumination unit is arranged on the image display means, then the device structure is compact, but the monitoring capability for driver condition is insufficient
Solution Approach 1:
The illumination unit is extracted from its position on the image display means and relocated to be adjacent to the air flow duct, separating the heat dissipation function from the display function while maintaining the monitoring capability through proper positioning of the imaging unit
3Duration of action of moving object
If the illumination unit operates continuously, then the monitoring function is maintained, but heat accumulation occurs reducing unit lifespan
Solution Approach 1:
The heat generated by continuous operation of the illumination unit is converted from a harmful factor into a beneficial one by using it as a heat source for the air conditioning system, where the air flow duct redirects air to absorb this heat, thereby extending the illumination unit's lifespan while maintaining continuous monitoring
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 enables effective monitoring of the driver's state while reducing heat load on the illumination unit, prolonging its lifespan and maintaining clear imaging.
Implementation Method 1
an air flow duct configured to guide the air for air-conditioning to the blow-out port... the illumination unit is arranged in the central region of the instrument panel... allowing air-conditioning air to cool the illumination unit
Data Source
Figure 1
Figure 2
Figure 3
AI summary
Vehicle interior monitoring device (10) including an imaging unit (20) capable of imaging a target area containing the face of the driver sitting in the driver's seat in a vehicle interior (1), and an illumination unit (30) capable of illuminating the target area, wherein the vehicle interior monitoring device (10) is configured to monitor the state of the vehicle interior (1) based on an image obtained by imaging the target area with the imaging unit (20) while illuminating the target area using the illumination unit (30), a blow-out port (41) for sending air for air-conditioning, and an air flow duct for guiding the air for air-conditioning to the blow-out port (41) are provided in a central region of an instrument panel (2) in a vehicle width direction, and the illumination unit (30) is arranged in the central region of the instrument panel (2) on a passenger seat side in the vehicle width direction with respect to the blow-out port (41).