Liquid cooling in projection cathode ray tubes

Details Liquid cooling in projection cathode ray tubes Liquid cooling in projection cathode ray tubes

1982-03-22

1983-09-20

Britton, Howard

Facsimile and static presentation processing

Facsimile

Recording apparatus

358242, H04N 574

Patent

active

044059493

ABSTRACT:
Cooling means are disclosed for cooling the face panel of a projection cathode ray tube. The cooling means comprises a housing having a rearwardly extending flange with a forwardly tapering section configured to nest with the forwardly tapering section of the face panel when mated therewith. The housing has a window section for framing and passing the image formed on a cathodoluminescent screen on the inner surface of the face panel. Spacing means are provided for spacing the window section of the housing from the face panel window section, and bonding means provide for bonding and hermetically sealing the tapering sections together. A cooling medium is located in the space between the windows for cooling the face panel. The tapering sections provide for mechanically attaching the housing and the tube into firm exact adjacency for sealing, in conjunction with the bonding means, the housing to the face panel, and for physically supporting the tube in conjunction with mounting ears in the corner regions of the housing.

REFERENCES:
patent: 2188661 (1940-01-01), Knoll
patent: 2342778 (1944-02-01), Wolff
patent: 4274110 (1981-06-01), Lehnert
A New Coolant-Sealed CRT for Projection Color TV by: Masahiro Kikuchi, Katsumi Kobayashi, Tomosuke Chiba and Yasumoto Fujii, Jun. 4, 1981.

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