The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jan. 02, 2018
Filed:
Dec. 25, 2013
Nippon Sheet Glass Company, Limited, Tokyo, JP;
NIPPON SHEET GLASS COMPANY, LIMITED, Tokyo, JP;
Abstract
The reduced pressure double glazed glass panel of the present invention includes an outside glass sheet, an inside glass sheet, and a gap portion that are joined together, with the gap portion being formed between the glass sheets and sealed under reduced pressure. Here, the outside glass sheet has a first glass surface disposed to face the outdoor space and a second glass surface disposed to face the gap portion. A Low-E film is formed on the second glass surface. The following relations hold: (Emissivity of Low-E film ∈)≦0.067; 31%≦(Solar reflectance on First glass surface R)≦40%; (48−R)%≦(Solar absorptance on First glass surface A)≦17%; (A)≦{18.3−(0.07×R)+(20×∈)}%; (Solar heat gain coefficient SHGC)≦0.50; and (Thermal transmittance U value)≦1.2 W/m·K or less. According to the present invention, it is possible to provide a reduced pressure double glazed glass panel having sufficient heat insulating and heat shielding properties and being less susceptible to bending when exposed to solar radiation.