| 摘要 |
A helmet 10 which has a plurality of substantially longitudinal members 26 arranged side-by-side, the longitudinal members being in fluid communication with each other; the helmet having a first inflated state in which the longitudinal members are distributed to form a substantially concave shape, and a second compressed state in which the longitudinal members lie flat and substantially coincident against each other. Each longitudinal member is separated from neighbouring longitudinal members by a tubular connecting member 22 in a lattice configuration. The helmet may be made of HDPE or nylon. The helmet may be formed using 3D printing methods such as fused deposition, laser sintering, or stereolithography. The helmet may have an indicator of correct pressure or when the correct pressure has been exceeded. |
