Display device comprising a screen cooling circuit and...

Details Display device comprising a screen cooling circuit and... Display device comprising a screen cooling circuit and...

H - Electricity

01

J

316/16, 313/4

H01J 29/86 (2006.01) H01J 29/00 (2006.01) H01J 29/89 (2006.01)

Patent

CA 1222013

12 ABSTRACT: A display device provided with a cooling circuit of the screen in order to limit the rise in temperature of the luminescent material, particularly during strong cur- rent densities of the electron beam. For this purpose the device is constituted by a window (11) formed by an optical fibre plate of which one or several cladding glasses have been removed partly in order to form channels for the passage of a cooling liquid while maintaining studs (13) constituting light conductors formed by the glass core surrounded by a cladding glass of the optical fibre plate. A transparent display window (14) which receives the lum- inescent material is glued or sealed to the window (11) thus constituting the cooling network which is connected to an external circulation by pipes embedded in a moulding (16). These display devices are, in particular, intended to be used as projection tubes.

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