| 摘要 |
PURPOSE: An outside mirror is provided to improve the wind noise efficiency by changing a shape of a housing. CONSTITUTION: Many grooves(12) are formed under a housing(10) to improve the wind noise efficiency by reducing the strength of a turbulence flow. A depth of the internal groove(12) is maximally 1.5mm and a depth of the external groove is maximally 0.3mm. The rear side of the housing(10) is 1.5mm maximally. A damper is installed under the housing(10) to reduce noise. Many protrusions are formed under the housing(10) to improve the wind noise efficiency. The protrusions form a soft wave shape lengthwise the housing(10).
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