Baseball helmet

A baseball helmet comprising:

• a first body (100);
• and
• a second body (200) detachably coupled to the first body (100) by a coupler (300) and separated from the first body (100) when an impact is applied thereto by a thrown baseball,
• wherein the first body (100) and the second body (200) coupled by the coupler (300) form a wearing space portion(S) therein, and separation of the second body (200) allows vibrations in the wearing space portion(S) to be dissipated,
• the first body (100) includes an impact mitigating portion (400) configured to absorb the impact of the baseball and change an advancing direction of the corresponding baseball, the impact mitigating portion (400) being installed to pass through the first body (100) so that one side of the impact mitigating portion (400) is located inside the wearing space portion(S), and
• the impact mitigating portion (400) includes a first impact mitigating material (410) and a second impact mitigating material (420), the first impact mitigating material (410) includes a plurality of impact mitigating bodies (411) each of which is formed in the shape of a column with a solid cross-section, made of an elastically-restorable elastic material having a predetermined length, and installed to be inserted to pass through through-holes (110) formed in the first body (100) so that one side is located in the wearing space portion(S) and the other side is exposed to the outside of the first body (100), air-adsorption-type adsorption ports (413) disposed at both sides of each of the impact mitigating bodies (411) and configured to be adsorbed to the second impact mitigating material (420) and the wearer's head, and a plurality of stoppers (415) formed to protrude while neighboring each other on an outer surface of each of the impact mitigating bodies (411) in the longitudinal direction thereof, the second impact mitigating material (420) has one surface detachably attached to each of the impact mitigating bodies (411) by the adsorption ports (413), and the air-adsorption-type adsorption ports (413) are formed at both sides of each of the impact mitigating bodies (411) and have one end adsorbed to the wearer's head located in the wearing space portion(S) in a vacuum manner and the other end detachably adsorbed to the second impact mitigating material (420) to prevent movement of the wearer's head and prevent an external impact from being transmitted to the wearer by the second impact mitigating material (420).