Sports Helmet Having Ventilation and Defogging Capacities that are Reinforced

Abstract

The present invention relates to a sports helmet comprising an outer shell ( 2 ) and an inner liner ( 1 ), said sports helmet being characterized in that said shell and said liner define between them firstly a ventilation circuit (A) designed to remove hot air, and defined between slots ( 11 a, 11 b, 21 a, 21 b ) provided, respectively, through the inner liner ( 1 ) and through the outer shell ( 2 ), and secondly a venting circuit (V) designed to defog an independent piece of vision equipment (M), and defined between suction inlets ( 10 ) provided in the front portion of the helmet and discharge outlets ( 20 ) provided in the outer shell ( 2 ), said helmet further comprising an adjustable shutter ( 3 ) making it possible to modify the air flow of the ventilation circuit (A) and the air flow of the venting circuit (V) in reversible manner.

1 . A sports helmet comprising an outer shell and an inner liner, wherein said shell and said liner define between them firstly a ventilation circuit designed to remove hot air, and defined between slots provided, respectively, through the inner liner and through the outer shell, and secondly a venting circuit designed to defog an independent piece of vision equipment, and defined between suction inlets provided in the front portion of the helmet and discharge outlets provided in the outer shell, said helmet further comprising an adjustable shutter making it possible to modify the air flow of the ventilation circuit and the air flow of the venting circuit in reversible manner. 
     
     
         2 . A sports helmet according to  claim 1 , wherein said shutter connects the ventilation circuit to the venting circuit. 
     
     
         3 . A sports helmet according to  claim 1 , wherein said shutter has a longitudinal opening. 
     
     
         4 . A sports helmet according to  claim 1 , wherein said shutter has an operating stud that projects through the outer shell. 
     
     
         5 . A sports helmet according to  claim 1 , wherein said adjustable shutter has an axial tongue that is connected on either side to two arms, each of which carries a flap forming a valve member between the ventilation circuit and the venting circuit. 
     
     
         6 . A sports helmet according to  claim 1 , wherein said ventilation circuit comprises, in the liner, a central cavity and at least two side cavities, said cavities receiving said adjustable shutter and communicating with said slots. 
     
     
         7 . A sports helmet according to  claim 6 , wherein said venting circuit comprises at least two side channels provided in the liner between the suction inlets and said side cavities of the ventilation circuit, with which cavities they communicate via a duct. 
     
     
         8 . A sports helmet according to  claim 7 , wherein said adjustable shutter has an axial tongue that is connected on either side to two arms, each of which carries a flap forming a valve member between the ventilation circuit and the venting circuit, and wherein said axial tongue slides in the central cavity while said flaps pivot in the side cavities by said arms moving, under the action of said tongue, between an isolation position in which the ventilation circuit and the venting circuit are isolated from each other and a communication position in which the side channels of the venting circuit open out, via the duct into the side cavities of the ventilation circuit. 
     
     
         9 . A sports helmet according to  claim 7 , wherein said discharge outlets of the venting circuit communicate with said channels upstream from said duct. 
     
     
         10 . A sports helmet according to  claim 7 , wherein said channels of the venting circuit are of section that tapers going from upstream to downstream. 
     
     
         11 . A sports helmet according to  claim 6 , wherein said adjustable shutter has an axial tongue that is connected on either side to two arms, each of which carries a flap forming a valve member between the ventilation circuit and the venting circuit, and wherein said arms are of curved profile and are mounted to slide in circular guide grooves provided between the central cavity and the side cavities of the liner. 
     
     
         12 . A sports helmet according to  claim 6 , wherein said adjustable shutter has an axial tongue that is connected on either side to two arms, each of which carries a flap forming a valve member between the ventilation circuit and the venting circuit, and wherein said flaps are provided on links that are connected to said arms and that are fastened to move in rotation in said side cavities. 
     
     
         13 . A sports helmet according to  claim 1 , wherein the ventilation circuit further comprises firstly at least one upper slot in the liner that extends in register with at least one upper slot in the shell and secondly at least two side lower slots in the liner that extend in register with at least two corresponding slots in the shell. 
     
     
         14 . A sports helmet according to  claim 12 , wherein the upper face of each of the links forms a cover for closing a respective one of the slots in the shell. 
     
     
         15 . A sports helmet according to  claim 1 , wherein the venting circuit further comprises at least two front suction inlets in the liner and at least two corresponding discharge outlets in the shell that extend in offset manner towards the rear of the helmet.