Cooling structure of a projection tube

Details Cooling structure of a projection tube Cooling structure of a projection tube

2005-03-22

2005-03-22

Patel, Ashok (Department: 2879)

Electric lamp and discharge devices

With temperature modifier

Using liquids or fluid flow directing means

C313S044000, C313S035000, C313S47700R, C313S478000, C313S482000, C165S080400

Reexamination Certificate

active

06870307

ABSTRACT:
A cooling structure of a projection tube having a following constitution is disclosed. A chamber in which a liquid coolant for cooling a panel surface is filled is formed on the panel surface of the projection tube and the chamber is defined by the panel surface, a lens which faces the panel surface in an opposed manner and a metal envelope which radiates heat. A first seal member is disposed between the metal envelope and the panel surface, while a second seal member is disposed between the metal envelope and the lens. A holder for pressing the lens in the direction toward the metal envelope is disposed in the periphery of the lens. Pads which have surfaces approximately perpendicular to a tube axis of the projection tube are formed on a funnel portion of the projection tube. A sustainer for supporting the chamber is brought into contact with the pads. The holder and the sustainer are fastened to each other by means of couplers so as to apply pressure to the first seal member and the second seal member whereby the chamber is sealed without coupling the coupler with the metal envelope.

REFERENCES:
patent: 6130497 (2000-10-01), Takezawa et al.
patent: 6150760 (2000-11-01), Tsuchiya et al.

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