US 12,453,872 B2
Mask apparatus with filtered rear fan inlet
Yongmin Song, Seoul (KR); Dongkwon An, Seoul (KR); Yeongcheol Mun, Seoul (KR); Dongeun Kim, Seoul (KR); and Sejeong Ahn, Seoul (KR)
Assigned to LG Electronics Inc., Seoul (KR)
Filed by LG Electronics Inc., Seoul (KR)
Filed on Jan. 25, 2022, as Appl. No. 17/583,699.
Claims priority of application No. 10-2021-0093942 (KR), filed on Jul. 19, 2021.
Prior Publication US 2023/0019195 A1, Jan. 19, 2023
Int. Cl. A62B 23/02 (2006.01); A41D 13/11 (2006.01); A62B 18/00 (2006.01)
CPC A62B 23/02 (2013.01) [A41D 13/11 (2013.01); A62B 18/003 (2013.01)] 18 Claims
OG exemplary drawing
 
1. A mask apparatus comprising:
a mask body providing an inlet and an outlet and including a rear body and a front body, the front body being coupled to a front surface of the rear body;
a face guard that is coupled to a rear surface of the rear body, that is configured to accommodate a portion of user's face, and that defines a respiration space at an inner side thereof; and
an air cleaning module that is mounted on the rear body, that is configured to purify air introduced into the inlet of the mask body, and that is configured to supply the purified air to the respiration space,
wherein a portion of the rear body protrudes toward the front body and defines an accommodate portion configured to accommodate the air cleaning module,
wherein the air cleaning module includes:
a fan module that is disposed at the accommodation portion and that defines an opening at a rear surface,
a flow guide covering the opening at the rear surface of the fan module,
a filter that is disposed at a rear surface of the flow guide, and
a filter housing that is coupled to the rear body and that covers a rear surface of the filter, and
wherein the flow guide defines a communication hole that is configured to guide air passing through the filter to an inside of the fan module,
wherein the accommodation portion includes:
a fastening surface extending forward from a side end portion of the rear body,
a seating surface that extends from an end portion of the fastening surface in a central direction of the rear body and that is configured to accommodate a front surface of the fan module,
an air guide surface connecting an end portion of the seating surface to the front surface of the rear body,
an upper surface connecting upper ends of the fastening surface, the seating surface, and the air guide surface to the front surface of the rear body, and
a lower surface connecting lower ends of the fastening surface, the seating surface, and the air guide surface to the front surface of the rear body,
wherein the flow guide includes:
a mount plate that defines the communication hole and that has a first side end portion in contact with the fastening surface,
a duct flange that extends from a second side end portion of the mount plate,
a rear flange extending from an end portion of the duct flange in a direction crossing the duct flange,
an upper flange extending along an upper end of the mount plate and an upper end of the duct flange, and
a lower flange extending along a lower end of the mount plate and a lower end of the duct flange, and
wherein the rear flange defines a portion of the rear surface of the rear body.