Display tube

H - Electricity – 01 – J

Patent

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313/18

H01J 29/86 (2006.01) H01J 29/00 (2006.01)

Patent

CA 1218404

ABSTRACT: Display tube. A display tube, for example a projection tele- vision display tube, having a very efficient cooling of the display screen and in which the Schlieren effect does not occur is obtained by causing a laminar flow of a layer of liquid having a thickness smaller than 1 mm in the space on the outside in front of the display window of the tube. Said laminar flow is obtained by the combination of the thin layer of liquid with a suitable viscosity of the liquid and the smooth connection of a chamber to at least the inlet aperture of the space.

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