| 摘要 |
PROBLEM TO BE SOLVED: To obtain a function of separating traveling wind while enhancing the reliability of angle maintenance of a rectifying body regardless of a difference in unique driving posture of a helmet wearer or speed of a transportation means. SOLUTION: The facing angle of a rectifying surface 41 in a rectifying body 4 is adjusted in a multistage manner, and the adjusted facing angle is maintained. COPYRIGHT: (C)2009,JPO&INPIT
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