Patent · US Expired

Projection television display tube with improved cooling

US4678961A · kind A · utility

3Cited by

1References

13Claims

0Family size

Assignee

U.S. Philips Corporation · US

Inventors

Albert Comberg · Aachen, DE
Johann Schroder · Aachen, DE

Key dates

Filing date	Nov 7, 1985
Grant date	Jul 7, 1987
Priority date	—
Expiry date	Nov 7, 2005

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY10S165/902
WIPO fieldElectrical machinery, apparatus, energy
WIPO sectorElectrical engineering

Abstract

Projection television display tube comprising an evacuated envelope having a display window provided on its inside with a display screen, a transparent second window which is disposed in front of said display window on its outside, and a transparent coolant flowing through the space between the display window and the second window, said coolant conveying the heat taken up at the display window through a cooling member to the atmosphere. The coolant is also in thermally conducting contact with a latent heat accumulator, so that an effective cooling is obtained even at peak loads of more than 40 W, and without external pipes.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.