Straddle Vehicle Headlight Reflector Geometry for Narrow Width
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Solution Overview
Problem
Straddle-type vehicles face challenges in minimizing vehicle width while ensuring visibility of flasher lamps, as separating them from the headlight complicates achieving a narrow width, and high-luminance flasher lamps consume excessive power.
Innovation Solution
The arrangement of a headlight unit centrally on the body cowl with a flasher lamp on a side end, where the reflector's straight portion is positioned between the headlight bulb and the flasher lamp, allowing the flasher lamp to be closer to the headlight while maintaining visibility, and using a reflector planar portion to intercept light and focus it forward, reducing vehicle width and power consumption.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Illumination intensity
If the flasher lamp is separated from the headlight to ensure visibility, then the visibility of the flasher lamp is improved, but the vehicle width increases
Solution Approach 1:
The patent positions the flasher lamp in the vehicle width direction outside the headlight lens outer periphery, utilizing the lateral space dimension. This allows the flasher lamp to be separated from the headlight for visibility while minimizing the increase in vehicle width by placing it at the optimal lateral position rather than increasing separation distance.
Solution Approach 2:
The reflector is designed with a specific geometric configuration where its outer periphery is positioned inwardly of the headlight lens outer periphery. This local geometric arrangement creates space for the flasher lamp while maintaining the headlight's optical performance and minimizing overall vehicle width.
2Illumination intensity
If a flasher lamp with large luminance is used to ensure visibility, then the visibility of the flasher lamp is improved, but the power consumption increases
Solution Approach 1:
The reflector acts as an intermediary optical element that redirects light from the headlight bulb toward the flasher lamp position. By strategically positioning the reflector's outer periphery inwardly of the headlight lens, it creates an optical pathway that allows the flasher lamp to be illuminated or visible without requiring the flasher lamp itself to consume excessive power.
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 enables a straddle-type vehicle with a smaller width while ensuring flasher lamp visibility, using flasher lamps with lower power consumption and improving light focus, thus enhancing overall vehicle design efficiency.
Implementation Method 1
a headlight comprising a headlight bulb and a reflector, by which light irradiated from the headlight bulb is reflected forward
Data Source
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AI summary
A vehicle (1) comprises a body cowl (30), a headlight unit (10) provided centrally of the body cowl (30) and flasher lamps (100L, 100R) arranged on side portions of the body cowl (30). The headlight unit (10) includes a headlight (11) and headlight lenses (12L, 12R) which cover the front of the headlight (11). The headlight (11) comprises a headlight bulb (11a) and a reflector (11b), by which light irradiated from the headlight bulb (11a) is reflected. When viewed from the front of the vehicle (1) , an outer periphery of the reflector (11b) is provided inwardly of outer peripheries of the headlight lenses (12L, 12R). The flasher lamps (100L, 100R) are provided outwardly of outer peripheries of the headlight lenses (12L, 12R). The outer periphery of the reflector (11b) includes reflector straight portions (101L, 101R) formed in a straight manner.