Mask apparatus

A mask apparatus comprising:

• a mask body that defines a communication hole;
• a sensor mounting portion that extends from a front surface of the mask body and surrounds the communication hole, the sensor mounting portion defining an installation space therein;
• a seal coupled to a rear surface of the mask body and configured to define a breathing space between the mask body and a user;
• a pressure sensor accommodated in the installation space and configured to sense air pressure inside the breathing space that is in communication with the communication hole;
• a film disposed in the installation space and configured to restrict permeation of moisture from the breathing space into the installation space through the communication hole;
• and
• a sensor sealing member configured to apply pressure to the film,
• wherein the sensor sealing member comprises:
• a cover portion that covers an opening defined at a front surface of the sensor mounting portion, and
• an extension portion that extends from a rear surface of the cover portion and is configured to apply pressure to the film, and
• wherein the pressure sensor and the film are directly adjacent to each other in the installation space.