Cooling system for an audio visual device

Details Cooling system for an audio visual device Cooling system for an audio visual device

1975-01-09

1976-10-05

Hayes, Monroe H.

Optics: motion pictures

With film strip fire prevention or isolation

Film cooling

352202, G03B 2116

Patent

active

039841804

ABSTRACT:
A chassis for a motion picture projector which includes an audio amplifier portion for producing an audio signal related to the images on the film. The chassis mounts the mechanical and electrical components of the projector. The chassis is a unitary casted structure which includes mounting platforms for the amplifier and the transformer, and an air flow directing means for more effectively and efficiently cooling of the electrical components to provide a lower operating temperature for the projector. A plurality of fins are provided on the chassis for conducting heat away from the transformer and a plurality of slots are provided to cause air flow directly across the amplifier section. A pair of depending, toothed flanges are provided on opposite ends of the chassis for introducing air onto the fins and through the slots to the heated electrical components. After passing across the electrical components, the air is directed by a fan across the high wattage, incandescant lamp and out through the top of the projector. One side of the projector housing includes air inlet slots to provide additional cooling air for the transformer.

REFERENCES:
patent: 2135500 (1938-11-01), Foster
patent: 2449713 (1948-09-01), Nemeth
patent: 3408138 (1968-10-01), Harz

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