Fire-rated recessed downlight

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

Patent

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Details

F21V 25/12 (2006.01)

Patent

CA 2569862

The fire-rated recessed downlight includes a mantle, and a light fixture which is fixed in the mantle, said mantle having at least one radiating hole, in which a dilatable fireproof piece is fixed. The radiating hole is connected with outside of the mantle through a radiating aperture. The radiating hole of the mantle and the dilatable fireproof piece could help to radiate the heat in ordinary situations and the dilatable fireproof piece will expand rapidly to close the radiating hole when on fire, therefore the fire inside the mantle will not spread to the outside.

L'invention concerne un appareil d'éclairage intégré protégeant contre le feu qui comprend une structure dans laquelle une ouverture d'évacuation de chaleur est ménagée. Un trou d'évacuation de chaleur est prévu sur la position correspondante d'une feuille intumescente destinée à protéger contre le feu et/ou entre le bord de la feuille intumescente et le bord de l'ouverture d'évacuation de chaleur. Cette ouverture d'évacuation de chaleur et la feuille intumescente de protection contre le feu placées sur la structure sont agencées afin que l'appareil d'éclairage puisse éliminer la chaleur en général, l'ouverture d'évacuation de chaleur en cas de feu étant refermée sur elle-même du fait de l'expansion rapide de la feuille intumescente de protection contre le feu. En conséquence, la structure peut empêcher la propagation du feu de l'intérieur vers l'extérieur.

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