Adaptive Leaning-Vehicle Headlight for Oblique Visibility and Glare Control
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Solution Overview
Problem
Existing headlight devices for leaning vehicles struggle to provide good visibility ahead, especially obliquely ahead, due to glare issues and inadequate lighting distribution during turns and straight movements.
Innovation Solution
A headlight device with adaptive front-lighting function that includes left and right oblique areas with maximum luminous intensity points above a horizontal reference line, and lower areas below it, controlled by a control device to adjust lighting based on the presence of oncoming vehicles or vehicles ahead, ensuring optimal visibility and minimizing glare.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Illumination intensity
If the headlight device lights all areas including areas above the cut-off line when moving straight ahead, then good visibility in the ahead-driving direction is obtained, but glare towards oncoming vehicles occurs
Solution Approach 1:
The lighting areas are segmented into multiple distinct zones: lower areas below the cut-off line, left oblique areas above the cut-off line, and right oblique areas above the cut-off line. This segmentation allows independent control of each area's lighting, enabling the system to illuminate necessary areas while avoiding glare by selectively turning off lights in directions where oncoming vehicles may be present.
Solution Approach 2:
The headlight device dynamically adjusts lighting based on detected vehicle directions. When an oncoming vehicle is detected in a specific area, the control device selectively turns off the light for that area while maintaining illumination in other areas. This dynamic adjustment resolves the contradiction between maintaining visibility and preventing glare by adapting the lighting pattern to real-time traffic conditions.
2Object-affected harmful factors
If the headlight device turns off light for an area when an oncoming vehicle is detected, then glare towards the oncoming vehicle is suppressed, but visibility in that area is reduced
Solution Approach 1:
By dividing the lighting into separate controllable areas (lower areas, left oblique areas, right oblique areas), the system can selectively illuminate only the necessary zones. When an oncoming vehicle is detected in one area, other areas remain illuminated, maintaining overall visibility while suppressing glare in the specific direction of the oncoming vehicle.
Solution Approach 2:
The lighting characteristics are made local rather than uniform. Each area has its light independently controlled based on the presence of vehicles in that specific direction. This allows the system to maintain high illumination quality in areas without oncoming vehicles while reducing illumination only in areas where glare would occur.
3Adaptability or versatility
If the vehicle body leans during turning, then the headlight device can illuminate the turn direction, but the light distribution shifts from the original position
Solution Approach 1:
The headlight device is designed to work in conjunction with the vehicle's leaning mechanism. The control device detects the vehicle's lean angle and dynamically adjusts which areas are illuminated based on the lean position. This allows the system to adapt to the changing light distribution caused by leaning, ensuring that the illuminated areas correspond to the actual road geometry during turns rather than maintaining a fixed distribution pattern.
Solution Approach 2:
The control device预先 identifies and defines specific oblique areas (left oblique areas and right oblique areas) that will be illuminated when the vehicle leans in corresponding directions. By pre-defining these areas and their relationship to the cut-off line, the system prepares the lighting configuration in advance, allowing smooth transition and stable illumination patterns during leaning maneuvers.
Data Source
AI summary
A headlight device includes a headlight and a control device. The headlight includes a plurality of light sources configured to light a single left oblique area located in the ahead-driving direction of the leaning vehicle on the left, a single right oblique area located in the ahead-driving direction of the leaning vehicle on the right, and one or more lower areas located in the ahead-driving direction of the leaning vehicle. The control device controls the headlight to light the left and/or right oblique area based on adaptive lighting control. The left and/or right oblique area lit based on the adaptive lighting control spread more outwardly in a left-right direction than any of the lower areas. Uppermost points of the left and right oblique areas are positioned further leftward and rightward than leftmost and rightward points of each of the one or more lower areas, respectively.