Patent ID: 7735157

Claim:
A full-face-type helmet comprising: an outer shell having a first ventilation opening in a chin region substantially opposing the chin of a helmet wearer, an impact-on-the-chin-and-cheek absorbing liner disposed inside said outer shell, and a blockish inside pad for the cheek which is attached to an inner surface of said impact-on-the-chin-and-cheek absorbing liner; said impact-on-the-chin-and-cheek absorbing liner comprising a liner main body portion and a sheet-like backing plate which is arranged on an inner surface of said liner main body portion and to which said blockish inside pad for the cheek is attached; said liner main body portion comprising a second ventilation opening substantially opposing said first ventilation opening; and said liner main body portion further comprising a ventilation ridge groove which is formed in said inner surface of said liner main body portion and communicates with said second ventilation opening; wherein said sheet-like backing plate comprises a third ventilation opening substantially opposing said second ventilation opening; wherein said sheet-like backing plate comprises a projection which is formed of at least part of a peripheral portion of said third ventilation opening and faces said second ventilation opening; wherein said projection forms a substantially ring-like shape rising from said peripheral portion substantially entirely of said third ventilation opening; wherein said sheet-like backing plate comprises a pair of left and right sheet-like backing plates and a substantially central sheet-like backing plate interposed between said pair of left and right sheet-like backing plates; and said third ventilation opening is formed in said substantially central sheet-like backing plate.