US 12,214,229 B2
Mask apparatus
Taejun Kim, Seoul (KR); Jeongtaek Park, Seoul (KR); Hojung Kim, Seoul (KR); Seokho Choi, Seoul (KR); Keonwang Lee, Seoul (KR); and Chiyoung Choi, Seoul (KR)
Assigned to LG ELECTRONICS INC., Seoul (KR)
Filed by LG Electronics Inc., Seoul (KR)
Filed on Apr. 15, 2021, as Appl. No. 17/231,465.
Claims priority of application No. 10-2020-0068407 (KR), filed on Jun. 5, 2020.
Prior Publication US 2021/0379418 A1, Dec. 9, 2021
Int. Cl. A62B 18/02 (2006.01); A62B 7/10 (2006.01); A62B 9/00 (2006.01); A62B 18/00 (2006.01); A62B 18/08 (2006.01)
CPC A62B 18/006 (2013.01) [A62B 7/10 (2013.01); A62B 9/00 (2013.01); A62B 18/025 (2013.01); A62B 18/08 (2013.01)] 19 Claims
OG exemplary drawing
 
1. A mask apparatus comprising:
a mask body;
a seal disposed at a rear surface of the mask body and configured to contact a user's face, the seal defining a breathing space configured to accommodate the user's mouth or nose or both based on the seal contacting the user's face;
a fan module disposed at a front surface of the mask body and configured to receive external air, the fan module defining a fan outlet configured to discharge the external air toward the breathing space; and
a mask body cover that covers the fan module and is coupled to the front surface of the mask body,
wherein the mask body comprises:
an air duct configured to guide the external air from the fan module to the breathing space, the air duct having (i) a duct inlet configured to communicate with the fan outlet and (ii) a duct outlet configured to communicate with the breathing space, and
an air exhaust hole configured to discharge air exhaled into the breathing space to an outside of the mask body,
wherein an area of the duct outlet is greater than an area of the duct inlet, and
wherein the air duct comprises:
a front surface portion spaced apart from the front surface of the mask body and disposed forward relative to the front surface of the mask body,
a side surface portion that is disposed at a side end of the front surface portion and defines the duct inlet,
a top surface portion that connects an upper end of the front surface portion of the air duct to the front surface of the mask body,
a bottom surface portion that connects a lower end of the front surface portion of the air duct to the front surface of the mask body, and
a cutoff portion that defines the duct outlet, the cutoff portion being defined by a rear end of the side surface portion, a rear end of the top surface portion, a rear end of bottom surface portion, and a rear side of the front surface portion.