Thermal insulating window for application in curtain walls

A thermal insulating window for application in curtain walls in which outer side skeleton members are connected to room side skeleton members of framed vertical members and horizontal members by means of thermal insulating members, said window comprising,

• a thermal insulating window framework having internal framework members supported by the room side skeleton members of the curtain walls and external framework members connected to the internal framework members through thermal insulating members;
• and
• a window body having a window casing mounted to the internal framework members of the thermal insulating window framework capable of opening and closing and a panel member supported at its periphery on the window casing;
• said window being characterized in that it further includes a first sealing member consisting of a thermal insulating member which is adapted to cover the whole of the outer surface of the window casing and to be in contact with the outer upper portion of the external framework member whereby a thermal insulating area is provided at the junction of the window casing and the panel member and a thermal insulating space is defined between the thermal insulating window framework and the window body and
• a second sealing member extends so as to be in contact at one end with the thermal insulating member which connects the internal framework members to the external framework members and at another end with the first sealing member and the window casing, thereby dividing the thermal insulating space between the thermal insulating window framework and the window body into two consecutive compartments disposed between outer and room side skeleton members.