Joined unit of glass base members, airtight envelope, and method for producing glass structural unit

A joined unit of glass base members, comprising:

• a first glass base member;
• a second glass base member;
• and
• a joining member which joins the first glass base member and the second glass base member, which is capable of providing a viscosity that has a negative temperature coefficient, and which extends at a predetermined width along opposing surfaces of the first glass base member and the second glass base member, wherein:
• at least one of the first glass base member and the second glass base member is elastically deformed while being depressed in an internal direction of the glass base member in the vicinity of an end portion in a widthwise direction of the joining member;
• a boundary surface between the elastically deformed glass base member and the joining member and a surface of the elastically deformed glass base member, which are disposed in the vicinity of the end portion in the widthwise direction of the joining member, are positioned on an internal side of the glass base member as compared with a boundary surface between the elastically deformed glass base member and the joining member which is disposed in the vicinity of a central portion in the widthwise direction of the joining member;
• and
• an area, in which a residual stress in a thickness direction of the joining member is a compressive stress, is formed in the vicinity of the end portion in the widthwise direction of the joining member.