Shield member and protective cap

Abstract

In a shield member for covering a face of a wearer and a protective cap in which the shield member is provided, image distortion is made as small as possible even when he or she sees an object through its peripheral portions of the shield member. In a shield member 5 for covering a face of a wearer installed in a cap body 3 for protecting a hear of the wearer, it is a shield member 5 formed of a transparent body or a translucent body in a curved plate-like form and gradually becoming thinner as going from its central portion to its peripheral portion.

1 . A shield member provided in a cap body for protecting a head of a wearer, for covering a face of the wearer, characterized by:
 being formed of a transparent body or a translucent body into a curved plate-like shape and being gradually thinner as going from a central portion to a peripheral portion.   
     
     
         2 . The shield member as recited in  claim 1 , characterized in that:
 a surface at an inside opposed to the face of the wearer is formed in a concave shape, a curvature radius in a left-and-right direction is formed to be smaller than a curvature radius in a upper-and-lower direction, and a ratio of change in a thickness in the left-and-right direction is formed to be larger than a ratio of change in a thickness in the upper-and-lower direction.   
     
     
         3 . The shield member as recited in claim characterized by:
 being constituted to comprise a main body portion and a visor portion, and that   the main body portion is formed in the curved plate-like shape, and   the visor portion is bent below the main body portion to project in a direction opposite to the main body portion.   
     
     
         4 . The shield member as recited in  claim 2 , characterized by:
 being constituted to comprise a main body portion and a visor portion, and that   the main body portion is formed in the curved plate-like shape, and   the visor portion is bent below the main body portion to project in a direction opposite to the main body portion.   
     
     
         5 . The shield member as recited in  claim 3 , characterized in that:
 a concave portion dented toward an inside of the main body portion with a predetermined width is formed at a central portion in a lateral direction of the visor portion.   
     
     
         6 . The shield member as recited in  claim 4 , characterized in that:
 a concave portion dented toward an inside of the main body portion with a predetermined width is formed at a central portion in a lateral direction of the visor portion.   
     
     
         7 . A shield member attached to a cap body for protecting a head of a wearer, for covering a face of the wearer, characterized by having:
 a main body portion for covering a face of the wearer, the main body being formed of a transparent body or a translucent body in a curved plate-like shape; and   a visor portion for preventing a flying object from contacting a body of the wearer, the visor portion being formed integrally with a lowermost end portion of the main body portion.   
     
     
         8 . The shield member as recited in  claim 7 ,
 characterized in that:   a concave portion dented toward the wearer to open to a lowermost end side is provided at a central portion in a lateral direction of the visor portion.   
     
     
         9 . A protective cap characterized by having:
 the shield member as recited in  claim 7 ;   a cap body for protecting a head of the wearer; and   guide means for guiding the shield member to move between a housing position where the shield member is housed in the cap body and a shielding position where the shield member covers a face of the wearer,   wherein a gap is formed between a visor portion of the shield member and a visor portion of the cap body in a state where the shield member is positioned at the housing position.   
     
     
         10 . A protective cap characterized by having:
 the shield member as recited in  claim 8 ;   a cap body for protecting a head of the wearer;   guide means for guiding the shield member to move between a housing position where the shield member is housed in the cap body and a shielding position where the shield member covers a face of the wearer,   wherein a gap is formed between a visor portion of the shield member and a visor portion of the cap body in a state where the shield member is positioned at the housing position.