Straddled Vehicle Headlight Duct for Stable Wind Intake
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Solution Overview
Problem
Existing straddled vehicles face issues with headlight placement, where the traveling wind is blocked by headlights, leading to increased light leakage and reduced visibility due to intense illumination of the duct interior.
Innovation Solution
The headlight is positioned inside the duct on a more rear side than the opening, with an aero-stabilizing member laterally covering it to stabilize the wind flow and inhibit light leakage, using a single light configuration.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If the headlight is disposed on a more front side than the opening, then the headlight can be positioned inside the duct, but the traveling wind is blocked by the headlight
Solution Approach 1:
Instead of placing the headlight in front of the opening (conventional approach), the patent inverts the arrangement by positioning the headlight on the rear side of the opening. This inversion resolves the contradiction by allowing wind to enter the duct unobstructed while still accommodating the headlight within the duct structure.
2Productivity
If the headlight is disposed on a more rear side than the opening, then wind intake is improved, but light leakage increases and duct interior is intensely illuminated
Solution Approach 1:
The patent introduces an intermediary structure (the rear side of the duct opening) between the headlight and the external environment. By positioning the headlight behind this intermediary barrier, the system achieves both wind intake efficiency and light containment, as the duct structure itself acts as the mediating element that allows wind passage while blocking light leakage.
3Illumination intensity
If a pair of headlights is used, then lighting coverage is improved, but adjustment in direction and intensity becomes more difficult
Solution Approach 1:
The patent merges the lighting functions into a single headlight unit rather than using a pair of separate headlights. This consolidation maintains adequate lighting coverage while significantly simplifying the adjustment of direction and intensity, as a single light source requires fewer adjustment mechanisms and is easier to control than multiple separate sources.
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
This configuration enhances wind intake efficiency and reduces light leakage, allowing easier light direction and intensity adjustment, while maintaining visibility and cooling the headlight.
Implementation Method 1
The aero-stabilizing member stabilizes the traveling wind, flowing from ahead, to flow away from the head pipe in the vehicle width direction
Implementation Method 2
The bottom portion may overlap the lens in a plan view of the straddled vehicle. In this case, the bottom wall portion can inhibit the headlight from illuminating the lower surface of the duct with too much intensity.
Data Source
AI summary
A straddled vehicle including a body frame having a head pipe, a front cover disposed in front of the head pipe and having an opening at a middle of the straddled vehicle in a width direction, a duct disposed in front of the head pipe and extending rearward from the opening to form a traveling wind pathway for traveling wind flowing from ahead and taken in through the opening, a headlight of a single light configuration, which overlaps the head pipe in a front view of the straddled vehicle, and is disposed inside the duct at the middle of the straddled vehicle in the width direction and further rearward than the opening, and an aero-stabilizing member disposed inside the duct and laterally covering the headlight, the aero-stabilizing member being configured to direct the traveling wind flowing from ahead to flow away from the head pipe in the width direction.