Glass panel unit and building component including the same
A glass panel unit includes a first glass panel, a second glass panel, a sealing portion in a frame shape, and a getter. The sealing portion hemietically bonds together respective peripheral portions of the first glass panel and the second glass panel. An inner space is formed at a reduced pressure between the first glass panel and the second glass panel. The getter is arranged in the inner space. The getter is arranged in a frame region extending along the sealing portion and located within a predetermined distance from each peripheral edge of the glass panel unit, so as to be covered with a building component frame.
1. A glass panel unit comprising:
a first glass panel;
a second glass panel arranged to face the first glass panel;
a sealing portion configured to hermetically bond together respective peripheral portions of the first glass panel and the second glass panel to create an inner space which is hermetically sealed at a reduced pressure between the first glass panel and the second glass panel; and
a getter configured to adsorb a gas and arranged in the inner space,
the glass panel unit having a plurality of peripheral edges,
the getter being arranged in a frame region, extending along the sealing portion, of the inner space to be covered with a building component frame when the building component frame is attached onto the glass panel unit,
the frame region being located within a predetermined distance from each of the plurality of peripheral edges of the glass panel unit,
the frame region comprises:
a first sub-region and a second sub-region which are opposite in a predetermined direction of the frame region,
the getter is arranged only in the first sub-region, and
the getter includes a first linear portion extending along a first side of the glass panel unit, a second linear portion extending along a second side adjacent to the first side of the glass panel unit, and a third linear portion extending along a third side adjacent to the first side of the glass panel unit.
2. The glass panel unit of claim 1 , further comprising:
a third glass panel bonded hermetically onto either the first glass panel or the second glass panel with a second sealing portion, and
a second inner space which is surrounded with the second sealing portion and in which a dry gas is sealed.
3. A building component comprising:
the glass panel unit of claim 1 ; and
a building component frame fitted into a peripheral portion of the glass panel unit,
the getter being covered with the building component frame.
4. A building component comprising:
the glass panel unit of claim 1 ; and
a building component frame fitted into a peripheral portion of the glass panel unit,
the predetermined direction being defined, when the building component is installed, to be a vertical direction such that the first sub-region is located under the second sub-region,
the getter located in the first sub-region being covered with the building component frame.
5. The building component of claim 4 , wherein
the glass panel unit further comprises:
a third glass panel bonded hermetically onto either the first glass panel or the second glass panel with a second sealing portion, and
a second inner space which is surrounded with the second sealing portion and in which a dry gas is sealed.
6. The glass panel unit of claim 1 , wherein each of a length of the second linear portion and a length of the third linear portion are greater than half of a length of the first linear portion.