Shelter bed

Abstract

A shelter bed comprising: a mattress on which at least one user can lie down; a frame on which the mattress is set, and which comprises legs supporting the entire shelter bed on a floor and a buoyancy device generating buoyancy holding the entire shelter bed on a water surface; and a protective shell for protecting the user, the protective shell being movable between a first position in which the protective shell covers the user lying on the mattress and a second position in which access to the mattress is released to the user.

1 . A shelter bed comprising:
 a mattress on which at least one user can lie down;   a frame on which the mattress is set, and which comprises legs supporting the entire shelter bed on a floor and a buoyancy device generating buoyancy holding the entire shelter bed on a water surface; and   a protective shell for protecting the user, the protective shell being movable between a first position in which the protective shell covers the user lying on the mattress and a second position in which access to the mattress is released to the user.   
   
   
       2 . The shelter bed according to  claim 1 , wherein the legs constitute a part of the buoyancy device. 
   
   
       3 . The shelter bed according to  claim 2 , wherein the legs extend in a longitudinal direction of the shelter bed along both side edges in a width direction of the shelter bed. 
   
   
       4 . The shelter bed according to  claim 3 , wherein the legs house the protective shell therein. 
   
   
       5 . The shelter bed according to  claim 1 , wherein the protective shell is a pair of flat plate members housed in the legs, which form a gable roof in the first position. 
   
   
       6 . The shelter bed according to  claim 1 , wherein one side edge of the protective shell is hinged to the frame. 
   
   
       7 . The shelter bed according to  claim 1 , wherein the protective shell has a semi-cylindrical shape, and moves between the first and second positions while rotating about the central axis of the semi-cylindrical shape thereof. 
   
   
       8 . The shelter bed according to  claim 1 , wherein the protective shell includes a semi-cylindrical shell movable in the longitudinal directions of the shelter bed. 
   
   
       9 . The shelter bed according to  claim 1 , wherein the buoyancy device is provided with a propulsion device for propelling the shelter bed in an event where the shelter bed floats on the water surface.