A mask apparatus includes a mask body configured to receive a battery at a center region of a front surface of the mask body, a plurality of electronic components that are disposed at the mask body and that include a pair of fan modules configured to be disposed at left and right sides of the battery, respectively, and a control module configured to be disposed between the battery and at least one of the pair of fan modules, and a mask body cover that is coupled to the mask body and covers the plurality of electronic components. The center region configured to receive the battery, the pair of fan modules, and the control module are arranged along a widthwise direction of the mask body.

A mask apparatus includes a mask body, a seal disposed at a rear surface of the mask body, a fan module disposed at a front surface of the mask body, and a mask body cover that covers the fan module and is coupled to the front surface of the mask body. The mask body includes an air duct configured to guide external air from the fan module to a breathing space inside the seal, and an air exhaust hole configured to discharge air exhaled into the breathing space to an outside of the mask body. An area of a duct outlet of the air duct is greater than an area of a duct inlet of the air duct.

A mask apparatus includes: a mask body including an air duct disposed at a front surface of the mask body, a fan module disposed at the front surface of the mask body to correspond to a suction hole of the air duct, and configured to suction external air to supply the suctioned air to the air duct, and a mask body cover that is coupled to the front surface of the mask body and that covers the fan module and the air duct. An air passage through which air suctioned by the fan module flows is provided in the air duct, and an embossed portion is disposed on at least a portion of a surface of the air duct that is configured to be in contact with the air flowing through the air passage.

A contaminate shield for protecting dentists and patients from harmful emissions during dental procedures is disclosed. The contaminate shield can include apertures allowing the dentist to access the patient's mouth through the contaminate shield. Further, the contaminate shield can include an aperture connectable to an air exchange system that provides clean air to the patient or removes contaminated air expelled by the patient. Additionally, the contaminate shield can be secured to the patient's face such that it covers the patient's nose and mouth to provide a physical barrier between the patient and a dentist.

This invention is a smart face mask for air filtration with a transparent mouth-covering portion, an active air filtration system which filters both air inflow and air outflow, an environmental or biometric sensor, and a smart control mechanism wherein the operation of the active air filtration system is automatically adjusted based on analysis of data from the sensor.

A personal protection system including a helmet worn on the head of a user and a hood removably coupled to the helmet. The hood may comprise a shell, a transparent face shield, and a mounting element configured to removably couple the hood to the helmet. The transparent shield may comprise a first lens and a second lens. The first lens may be coupled to the shell, and the second lens may be coupled to the first lens. The second lens may be coupled to the first lens by one of an adhesive, heat staking or ultra-sonic welding. The hood may also comprise a mounting element configured to center the transparent face shield relative to a light assembly coupled to the helmet such that the light emitted from the light assembly passes through a u-shaped opening or slot defined by the second lens.

The present invention is a compact and portable personal ultraviolet air irradiation system having an ultraviolet air irradiation unit, a breathing tube, and a face mask. Unfiltered air passes through the ultraviolet air irradiation unit and is purified to ensure biological material has been neutralized by utilizing UV LEDs in the germicidal wavelengths of 100-280 nm. The ultraviolet air irradiation unit may further purify air of air particulates, gases, vapors, and biological material by utilizing a HEPA filter. The ultraviolet air irradiation unit may provide variable pressure to the mask to meet the breathing demands of the user. Flow through the ultraviolet irradiation unit may be reversible to irradiate the exhalations of a user who may be infected with a virus or other disease spread through exhalations.

A face shield system utilizes a headgear with an outer shield and an optional inner side that is proximal to a person wearing the face shield. The headgear may be configured to receive a disinfecting cartridge that neutralize or destroy pathogens in an airflow flowing therethrough. The cartridge may include a neutralizing UV light emitter and a destroying UV light emitter as well as an ionizer. The plenum may include a plurality of baffles to produce a serpentine flow through the plenum. The baffles and the interior of the plenum may be textured and polished and may include catalytic coatings for improving the effectiveness of pathogen destruction and absorbing ions and UV light. An air inlet may allow air from the plenum to pass into the inner side of the shield after the air is disinfected and purified by the UV light emitters.

Provided are a mask device and a method for controlling the same. The mask device includes a mask body configured to cover a nose and mouth of a user, a first air cleaner connected to one side of the mask body, and a second air cleaner connected to the other side of the mask body. Also, the mask device includes a first suction fan module installed in the first air cleaner, a second suction fan module installed in the second air cleaner, and an exhaust fan module disposed in the mask body.

A breathing mask including a vent system for ventilating the mask, a detector for providing respiration data of a user and located for sensing at least one physical property of air inside the breathing mask when worn by a user and a controller configured to activate the vent system based on the respiration data. The controller may be configured to predict future respiration data based on historic respiration data of at least one earlier detected inhaling or exhaling cycle, determine whether a future inhaling or exhaling cycle will occur based on predicted future respiration data and activate the vent system before the determined future inhaling or exhaling cycle commences.