Vehicle Lighting Device with Irregular Intensity Variation
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Solution Overview
Problem
Existing vehicle lighting devices fail to effectively draw attention with a simple shifting light emission area, as pedestrians are accustomed to one-directional shifts, which may not alert them to the vehicle's impending movement, especially during turns.
Innovation Solution
A lighting device with multiple light emission units on either side of the vehicle, controlled by a microprocessor to increase and vary emission intensity in an irregular pattern, ensuring overall brightness increases gradually and remains within a predetermined range, enhancing attention-drawing effectiveness.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If a simple one-directional shifting light emission area is used, then the device structure is simple, but the attention-drawing effectiveness is insufficient
Solution Approach 1:
The patent applies dynamics by making the light emission units change their emission intensity in an irregular pattern over time, rather than simply shifting in one direction. The control device varies the emission intensity of each light emission unit dynamically, creating an irregular temporal pattern that is more noticeable to pedestrians and effectively draws attention before vehicle movement.
2Illumination intensity
If the emission intensity of all light emission units is increased uniformly, then the overall brightness increases, but the ability to draw attention through variation is reduced
Solution Approach 1:
The patent applies local quality by making different light emission units have different emission intensity characteristics at the same time. The control device sets different emission intensities for different light emission units based on their positions and timing, creating local variations in the light pattern that enhance attention-drawing effectiveness while maintaining overall brightness increase.
Solution Approach 2:
The patent applies periodic action by controlling the light emission units to operate in a time-sequenced manner with irregular intervals. The control device activates light emission units at different times with varying intensities, creating a periodic yet irregular pattern that is more effective at drawing attention than uniform continuous illumination.
3Reliability
If the light emission units change intensity rapidly, then the attention-drawing effect is enhanced, but extreme fluctuations may occur that reduce reliability
Solution Approach 1:
The patent applies beforehand cushioning by setting the emission intensity of each light emission unit within a predetermined range rather than allowing unlimited variation. The control device pre-defines intensity limits to prevent extreme fluctuations, cushioning against potential instability while still enabling sufficient variation to draw attention effectively.
Data Source
AI summary
A lighting device for a vehicle includes a light emission units, a control device, and an operating unit to be operated when the vehicle is started. The control device increases an emission intensity of light emission units in a first period. The first period includes a second period including a plurality of time intervals. The control device changes the emission intensity of light emission units in each time interval of the second period so that two light emission units in at least one pair of light emission units adjacent to each other differ from each other in light emission parameters. The light emission parameters include at least two parameters out of a magnitude of changing amount in emission intensity in the time interval, a direction indicating whether the emission intensity is increasing or decreasing in the time interval, and the emission intensity at an end point of the time interval.