The present invention relates to a portable personal air purifier in which there are mounted a purifier body configured to have a shape that can be carried by a user and to purify air by means of a filter, a ventilation body connected to the purifier body and configured to communicate air, and a respiration mechanism connected to the ventilation body, and configured to suck purified air; wherein the purifier body is configured such that a filter accommodating space is formed in a casing so that a filter is inserted thereinto, and the filter accommodating space has a structure in which the filter can be withdrawn in one direction; and wherein the respiration mechanism separates a ventilation line for air flowing from the purifier body and a ventilation line for air exhaled from the user.

The present invention relates to a portable personal air purifier in which there are mounted a purifier body configured to have a shape that can be carried by a user and to purify air by means of a filter, a ventilation body connected to the purifier body and configured to communicate air, and a respiration mechanism connected to the ventilation body, and configured to suck purified air; wherein the purifier body is configured such that a filter accommodating space is formed in a casing so that a filter is inserted thereinto, and the filter accommodating space has a structure in which the filter can be withdrawn in one direction; and wherein the respiration mechanism separates a ventilation line for air flowing from the purifier body and a ventilation line for air exhaled from the user.

A face shield assembly with positive pressure airflow comprises a head band, a transparent face shield, a foam spacer, and at least one airflow supply unit providing a positive pressure airflow. The head band attaches the face shield outward and the foam spacer inward. The airflow supply unit has hose(s) to connect the holes distributed in the foam spacer, consequently bring forth airflow on the front of the user's face to prevent the droplets and particles from being inhaled into the user's nose and mouth.

A face shield assembly with positive pressure airflow comprises a head band, a transparent face shield, a foam spacer, and at least one airflow supply unit providing a positive pressure airflow. The head band attaches the face shield outward and the foam spacer inward. The airflow supply unit has hose(s) to connect the holes distributed in the foam spacer, consequently bring forth airflow on the front of the user's face to prevent the droplets and particles from being inhaled into the user's nose and mouth.

A user-wearable breathing apparatus is disclosed. Air may be passed through an air irradiating chamber coupled to an ultraviolet light source and configured to irradiate the air irradiating chamber with ultraviolet light. An ultraviolet-opaque cover substantially surrounding the user-wearable breathing apparatus may be provided. A hose may be passed through an opening in the ultraviolet-opaque cover to direct processed air to the user. The hose may be configured to attach to an optional head-wearable breathing assembly. In some embodiments, the air may be passed through the apparatus in response to the user’s breathing, while in other embodiments, fans are used. In other embodiments, the oxygen content of the processed air may be increased by techniques such as nitrogen scrubbing and injecting oxygen into the air while it is being processed.

A system for introducing breathable air at a face mask worn by a person includes a wearable manifold and a flexible conduit. The manifold has an inlet port adapted to receive a supply of breathable air and an outlet port. The flexible conduit has a first open end and a second open end. The first open end is coupled to the outlet port of the manifold, and the second open end is adapted to be placed between the person's face and a face mask worn by the person.

A system for introducing breathable air at a face mask worn by a person includes a wearable manifold and a flexible conduit. The manifold has an inlet port adapted to receive a supply of breathable air and an outlet port. The flexible conduit has a first open end and a second open end. The first open end is coupled to the outlet port of the manifold, and the second open end is adapted to be placed between the person's face and a face mask worn by the person.

A face mask has an ultraviolet (UV) light-emitting diode (LED) mounted in a respiration tube that extends through an outer shell of the mask. A power source is connected to the UV LED. The respiration tube is serpentine in shape so as to maximize the amount time the air is subjected to the UV radiation. The movement of the air as well as additional heat sinks in the tube reduce the amount of heat radiating from the LEDs during use. This arrangement protects the user and others from excessive UV exposure and heat during use.

A personal ventilation device and method include a first duct segment and a second duct segment both held by a support structure that is configured to be mounted on a wearer of the personal ventilation device. The personal ventilation device also includes a first nozzle mounted to the first duct segment and a second nozzle mounted to the second duct segment. The first and second nozzles are configured to be disposed proximate to opposite sides of a face of the wearer and the first nozzle directs airflow from the first duct segment across the face of the wearer to form a control volume for a breathing space of the wearer.

A personal ventilation device and method include a first duct segment and a second duct segment both held by a support structure that is configured to be mounted on a wearer of the personal ventilation device. The personal ventilation device also includes a first nozzle mounted to the first duct segment and a second nozzle mounted to the second duct segment. The first and second nozzles are configured to be disposed proximate to opposite sides of a face of the wearer and the first nozzle directs airflow from the first duct segment across the face of the wearer to form a control volume for a breathing space of the wearer.