Protection device

A protection device, comprising:

• a base portion attachable to a human body;
• an drive portion;
• a protection unit having a bellows structure, held by the base portion, and being switchable between a folded orientation in which the protection unit is folded and an unfolded orientation in which the protection unit is unfolded from the folded orientation by an elastic force of the drive portion elastically biased to the unfolded orientation and thus the protection unit covers the head of the human body, the protection unit being provided with a fixed end fixed to the base portion and a free end not fixed to the base portion;
• a lock portion configured to lock the protection unit in a folded orientation against the elastic force of the drive portion;
• a trigger portion engaged to the lock portion and configured to selectively unlock the protection unit locked by the lock portion by releasing the lock portion from the trigger portion to cause the protection unit to be unfolded by the elastic force of the drive portion,
• the protection unit being folded in a state where the free end is adjacent to the fixed end in the folded orientation and elastically biased with the elastic force to the unfolded orientation, and
• the protection unit being unfolded upward to form a gutter shape while the free end, as a whole, moves from the fixed end by the elastic force biased to the unfolded orientation, at a time of switching from the folded orientation to the unfolded orientation based on that the lock portion is released from the trigger portion.