Light source cooler for lcd monitor

F - Mech Eng,Light,Heat,Weapons – 21 – V

Patent

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Details

F21V 29/00 (2006.01) F21V 31/04 (2006.01)

Patent

CA 2282393

A cooling device for a liquid crystal display monitor (11) has a sealed container (12) within which a light source (10) is immersed in a thermally- conductive liquid coolant (28). The container (12) is rigid and includes a transparent panel (14) through which light travels from the light source (10) to a display screen of the monitor. The liquid coolant (28) transfers heat from the light source (10) to the walls of the container, where it is transferred to the ambient environment. A flexible bladder (38) is provided within the container (12), which is compressed by coolant volume increases resulting from heating of the coolant by the light source (10), thereby to protect the container (12) from internal pressure stress. The bladder (38), filled with an easily compressible fluid, can be vented to the ambient environment, or can be fully contained within the container (12).

Un dispositif de refroidissement pour afficheur (11) à cristaux liquides comporte un contenant (12) hermétique à l'intérieur duquel est plongée une source lumineuse (10) dans un liquide de refroidissement (28) thermoconducteur. Ledit contenant (12) est rigide et comporte un panneau transparent (14) à travers lequel passe la lumière, de la source lumineuse (10) vers un organe d'affichage de l'écran. Le liquide de refroidissement (28) transfert la chaleur de la source lumineuse (10) vers les parois du contenant, où celle-ci se diffuse dans l'environnement ambiant. Le contenant (12) est équipé d'une vessie flexible (38) qui est comprimée par des augmentations de volume du liquide de refroidissement résultant du réchauffement du liquide par la source lumineuse (10), ce qui protège le contenant (12) des contraintes liées à la pression interne. Cette vessie (38), qui est remplie d'un fluide aisément compressible, peut être munie d'un organe d'aération en communication avec l'environnement ambiant, ou peut être entièrement contenue à l'intérieur du contenant (12).

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