Indicator arrangement, regulator release button, and breathing apparatus

A release button for a regulator removably connectable to a facemask in a breathing apparatus, the release button comprising:

• a body operationally engaged with at least one component of the regulator and configured to be actuated by a user to detach the regulator from the facemask;
• at least one light source;
• and
• at least one sensor in communication with the at least one light source, the at least one sensor configured to sense at least one condition and generate at least one signal based on the at least one condition to operate the at least one light source,
• wherein at least a portion of the body is at least partially translucent, such that light generated by the at least one light source is transmitted through at least a portion of the body and visible on or through at least one external surface of the body to illuminate at least a portion of the body,
• wherein the at least one sensor is configured to sense an external light level and generate the at least one signal based thereon, and
• wherein the at least one sensor is configured to activate the at least one light source upon detecting a lack of motion of a user for a predetermined amount of time.

A breathing apparatus, comprising:

• a frame for supporting an air tank having at least one air tube extending therefrom;
• a connection arrangement for removably attaching the frame to a user;
• a facemask configured for removable attachment to the head of the user;
• a regulator attachable to the facemask and in fluid communication with the air tank via the at least one air tube;
• at least one release button comprising:
• a body operationally engaged with at least one component of the regulator and configured to be actuated by the user to detach the regulator from the facemask,
• at least one light source, and
• at least one sensor in communication with the at least one light source, the at least one sensor configured to sense at least one condition and generate at least one signal based on the at least one condition to operate the at least one light source,
• wherein at least a portion of the body is configured to facilitate transmission of light from the at least one light source, such that the light is visible on or through at least one external surface of the body of the at least one release button to illuminate at least a portion of the body,
• wherein the at least one sensor is configured to sense an external light level and generate the at least one signal based thereon, and
• wherein the at least one sensor is configured to activate the at least one light source upon detecting a lack of motion of a user for a predetermined amount of time.