| 摘要 |
<p>There is described a safety helmet (1) comprising an outer shell (2) and at least one layer (3) of shock-absorbing material placed inside it, at least one inlet (4) obtained on the shell and passing at least therethrough, to fluidically connect the outer environment to the helmet inside, and one or more ventilation ducts (5) fluidically connected to the inlet and provided with one or more outflow holes (6) facing the inside of the helmet. The helmet is characterized by comprising at least one padding layer (10) at least partially permeable to air, and substantially incompressible, or only partially compressible, for the air flow diffusion, and preferably the diffusion layer is arranged at least below the hole or holes of the ventilation ducts.</p> |
