| 摘要 |
A vehicle helmet, including a cap body comprised of a shell and a shock absorbing liner fitted in the shell, and a longitudinal air duct which extends in a wall of the cap body, such that the interior of the cap body can be ventilated through the air duct, wherein at least a portion of the shock absorbing liner is divided into an outer layer on the side of the shell, and an inner layer superposed on an inner surface of the outer layer, the inner and outer layers having recessed grooves provided in opposed surfaces thereof to define an air duct, the inner layer having a vent hole. Thus, air-streams flowing into the air duct can flow at a high rate without any leakage, thereby reliably ventilating the interior of the cap body.
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