Indoor ventilation system

An indoor ventilation system comprising:

• an opening part perforated in a window glass panel;
• and
• an opening and closing means having a lid or a cover for blocking or opening the opening part,
• wherein the opening and closing means further comprises:
• a fixing frame embedded in the opening part to be sealed to a glass panel of an inner circumference of the opening part;
• and
• an operation part disposed to be fixed and combined with the fixing frame or to be drawn out of the fixing frame;
• wherein the fixing frame is formed in a ring shape, and the operation part when combined with the lid or cover is inserted into the fixing frame to close a ventilation system and is drawn out of the fixing frame to open the ventilation system;
• wherein the fixing frame has a cylindrical structure and has a peripheral outer flange protruding toward an indoor side, and has a gutter part formed on an outer circumferential surface of the cylindrical structure;
• and
• wherein the fixing frame has an air filter or a foreign matter filter is mounted within the cylindrical structure adjacent the gutter part in a round partition form;
• and
• wherein the ventilation system further comprises a first shield gasket inserted into the opening part to protrude toward an outdoor side, and is inserted between the inner circumference of the opening and the fixing frame to seal.

An indoor ventilation system, which includes an opening part perforated in a window glass panel, a ring-shaped fixing frame including a cylindrical part and an outer flange, the fixing frame inserted into the opening part to protrude to an outdoor side, and an operation part for blocking or opening the fixing frame, the indoor ventilation system further comprising:

• a first shield gasket to be interposed between the opening part and the fixing frame, wherein, in the undeformed state, the first shield gasket is formed in a doughnut shape, and includes:
• a through hole part formed at a center of the first shield gasket;
• a body part extending radially from the through hole part and having a predetermined radial dimension corresponding to a thickness of the window glass panel;
• and
• an adhesive surface part extending radially from the body part, and
• wherein when the adhesive surface part is adhered on the window glass panel around the opening part and the fixing frame is forcibly inserted into the through hole part and the opening part, the body part is transformed from the doughnut shape into a cylindrical shape and is interposed between the opening part and an outer circumference of the cylindrical part of the fixing frame to seal a space between the window glass opening part and the fixing frame.

An indoor ventilation system, which includes an opening part perforated in a window glass panel, a ring-shaped fixing frame comprising a cylindrical part and inserted into the opening part, an operation part for selectively blocking or opening the fixing frame, and an exterior cover shield gasket, the indoor ventilation system further comprising:

• the exterior cover shield gasket inserted into the opening part from an outdoor side,
• the fixing frame inserted into the opening part from an indoor side such that the exterior cover shield gasket covers the outdoor side of the fixing frame;
• and
• wherein the exterior cover shield gasket includes:
• a through hole formed in a middle thereof;
• a front rim cover part extending radially inward from an inner circumference of the through hole to cover a front end portion of the fixing frame at the outdoor side;
• a cylindrical shield gasket protruding axially from an outer face of the front rim cover part and sealingly interposed between an outer circumference of the fixing frame cylindrical part and the inner circumference of the opening part;
• and
• an exterior cover part extending outwardly from the front rim cover part to cover an outdoor part of the window glass panel at the opening part.