| 摘要 |
PROBLEM TO BE SOLVED: To settle the problem that, as a helmet worn when mounting on and driving a motorcycle has a structure almost sealing the ears in a cap body to decrease hearing impairment caused by so-called wind noise generated around the helmet, so the driver is in a hard hearing state on which even the required voice information is hardly heard, and is forced to commit dangerous driving. SOLUTION: By setting corresponding holes on the helmet to cancel the almost sealed state and setting to cover the corresponding holes a wind noise generation suppressor for preventing generation of causal turbulent flow, an audibility normalizing means for releasing audibility and in addition preventing wind noise generation is provided. COPYRIGHT: (C)2010,JPO&INPIT |
