| 摘要 |
PROBLEM TO BE SOLVED: To improve a thermal insulation characteristic and to prevent the appearance of condensate or frost by providing at least one surface of at least one sheet of glass sheet with at least one heating element on at least one part thereof. SOLUTION: The internal surface of the glass sheet 3 is coated with a metallic thin-film layer 7 which extends between two pieces of parallel current collecting lines, is conductive, has low emissivity and has a geometrical thickness of 180 to 350 nm and a resistance value of <=50 Ω/1 m<3> , more preferably <=20 Ω/1 m<3> . A current collecting band 8 is formed on this glass sheet 3. Fixed contact electrodes 5 are formed apart spaced intervals of about 30 mm between the glass sheet 3 and a glass sheet 2 having a size smaller than the size of the glass sheet 3. The glass sheet 2 and the glass sheet 3 are welded and integrated by an inorg. lining joint 6. A connector P is disposed in the part protruding from the marginal part of the glass sheet 3 and a vacuum is formed between the glass sheet 2 and the glass sheet 3. |
