Means for cooling the faceplate of a cathode ray tube in a telev

Details Means for cooling the faceplate of a cathode ray tube in a telev Means for cooling the faceplate of a cathode ray tube in a telev

1986-04-07

1987-05-12

DeMeo, Palmer C.

Electric lamp and discharge devices

With temperature modifier

Using liquids or fluid flow directing means

313 12, 313 44, 313478, H01J 2989, H01J 724

Patent

active

046653368

ABSTRACT:
For cooling the faceplate of a high-energy cathode ray tube in an in-line television projection system, a cooling cell (5) constructed as a separate entity is interposed between the CRT faceplate (2) and the transmission lens (3) which is arranged in front of and in line with the cathode ray (1). The cooling cell comprises two flexible transparent diaphragms (6 and 7) which are connected at their peripheries to form an enclosure (8) for containing a cooling liquid and which are arranged in contact with the front surface 2a of the CRT faceplate and the rear surface (4) of the lens. The cooling cell has an inlet (11) and an outlet (12) through which circulating liquid enters and leaves the cell.

REFERENCES:
patent: 1955899 (1934-04-01), Zworykin
patent: 2093288 (1937-09-01), Ogloblinsky
patent: 2517774 (1950-08-01), Epstein
patent: 3914010 (1975-10-01), Zeller
patent: 4213498 (1980-07-01), Vandenbossche

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