A helmet comprises a shell defining a shell ventilation aperture and an inner liner securable within the shell. The inner liner defines an inner liner ventilation aperture and a recessed track. A ventilation control includes a slider plate and a boss disposed on the slider plate. The boss is configured to be frictionally retained within the recessed track while providing for the slider plate to be reversibly displaced along the recessed track from a first position in which the slider plate blocks a flow of air through the inner liner ventilation aperture to a second position in which the slider plate permits the flow of air through the inner liner ventilation aperture. The slider plate is configured to be reversibly displaced between the first and second position by a force applied upon a lower surface of the slider plate from within the helmet.

A helmet may include a helmet body, a fit system, a bezel, and a hardware retainer. The helmet body may have an outer shell and an energy management layer. The bezel may be separate from the outer shell and coupled to the helmet body at the vent opening of the helmet, encircle the vent opening, and have a hardware opening extending through the bezel and an anchor opening in the bezel adjacent the hardware opening. The hardware retainer may be positioned behind and coupled to the bezel. The hardware retainer may include a hardware receiving aperture aligned with the hardware opening and a hardware retainer cover coupled to a rear side of the hardware retainer. The hardware retainer may further include an anchor recess aligned with the anchor opening. The bezel may be in-molded into the energy management layer.

A helmet may include a helmet body, a fit system, a bezel, and a hardware retainer. The helmet body may have an outer shell and an energy management layer. The bezel may be separate from the outer shell and coupled to the helmet body at the vent opening of the helmet, encircle the vent opening, and have a hardware opening extending through the bezel and an anchor opening in the bezel adjacent the hardware opening. The hardware retainer may be positioned behind and coupled to the bezel. The hardware retainer may include a hardware receiving aperture aligned with the hardware opening and a hardware retainer cover coupled to a rear side of the hardware retainer. The hardware retainer may further include an anchor recess aligned with the anchor opening. The bezel may be in-molded into the energy management layer.

The present invention relates to a helmet including mouth vents. The helmet of the present invention includes: a chin guard 100 having a first fastening portion 110 and a second fastening portion 120; a vent body 200 having a first fastening protrusion 210 protruding toward the chin guard 100 so as to be inserted into and fixed to the first fastening portion 110 and a second fastening protrusion 220 protruding toward the chin guard 100 so as to be inserted into and penetrate the second fastening portion 120; and fixing means 300 detachably coupled with the second fastening protrusion 220 penetrating the second fastening portion 120 to fix the second fastening protrusion 220 to the second fastening portion 120.

According to an embodiment, there is provided an extended reality (XR) system based on multimodal interfaces including a computer configured to broadcast output data including at least one device identifier (ID), at least one time limit, and at least one reproduction data to at least one extended reality output device, and at least one extended reality output device configured to receive the output data and reproduces only reproduction data corresponding to itself within the time limit based on the at least one device identifier (ID). According to this, a user can experience reproduction of five senses with a sense of reality without interruption.

Disclosed is a cooling pack for a head including an outer cover fixed at an inside of the head protector. The outer cover adheres to a top of a human body, a refrigerant is embedded in the outer cover, and a plurality of fixers are coupled to the outer cover. The fixers are attachable to or detachable from the head protector, and the refrigerant is formed of a polyester polymer powder.

A head protection system includes a safety helmet and a fire protection cloth. The safety helmet includes a helmet shell (105) and a holding device (108) to guarantee a distance (A) between a helmet shell inner side (106) and the user head (102). An air path (110) is formed by a plurality of openings (120) of a fastening ring (125) and the distance between the inner side of the helmet shell and the head of the user. The fastening ring is arranged at least in an area of the user forehead of the user. The fire protection cloth has a fastening strap (230) with rigid fastening elements (235) configured to mesh with an opening of the fastening ring to detachably fasten the fire protection cloth to the safety helmet. The rigid fastening elements fill the plurality of openings in the fastened state to close the air path.

An air-fed visor comprises a mask, at least part of which comprises a foam material. An air tube is provided for delivering air to the visor. An air distribution rose is disposed in the foam mask. The rose comprises an air inlet connected to the air tube and an air distribution chamber for distributing air from the air inlet into the foam material.

A thermoformed protective face shield includes a curved top portion adapted to conform to a curved lower portion of a rigid protective headwear. The face shield further includes a visor portion extending outward from a lower end of the curved top portion, thereby creating a space between the user's face and a face cover portion. The visor portion includes one or more channels formed therein for structural support and/or allowing release of heat and/or moisture from the face cover portion. The face cover portion extends downward from the visor portion and covers and provides protection for the face of a user. A side shield portion extends inwardly from the face cover portion. For shielding the sides of a user's face. Further, a perimeter flange may extend perpendicular to the perimeter of the face shield for providing structural support to the face shield.

A mechanically ventilated headgear assembly for cooling a head of a user includes a hat, which can be positioned on the head of the user. The hat has a plurality of apertures positioned therein proximate to a top thereof to vent the hat. A battery is engaged to the hat. A fan, which is engaged to and positioned within the hat proximate to the top, is operationally engaged to the battery so that the battery is positioned to selectively power the fan. The fan motivates air through the apertures to cool the head of the user.