H - Electricity – 04 – R
Patent
H - Electricity
04
R
181/3
H04R 1/02 (2006.01) H04R 9/00 (2006.01) H04R 9/02 (2006.01)
Patent
CA 1085744
ABSTRACT OF THE DISCLOSURE In an enclosed loudspeaker apparatus comprising a transducer, such as a loudspeaker, for producing acoustic radiation or sound when an electric current is applied to a drive means of the transducer, and an enclosure having an aperture in which the transducer is mounted for emission of the acoustic radiation therethrough with the drive means being in the interior of the enclosure; a heat pipe is provided for absorbing heat generated by electric current applied to the drive means, and for carrying such heat to the exterior of the enclosure so as to permit the application of increased currents to the drive means without overheating. In the case of a bass reflex, or phase-inverter loudspeaker apparatus with a reflex port extending through the enclosure, the heat pipe extends into a duct associated with the reflex port and bears a radiator with fins extending from the heat pipe to the interior surface of the duct to define a plurality of channels extending from the interior of the enclosure to the exterior thereof. The reflex port or other exit opening for the heat pipe may be positioned above the transducer so that a working fluid in the heat pipe for carrying heat from the drive means of the transducer to the exterior of the enclosure is returned toward the drive means at least in the part under the influence of gravity. -1-
304645
Sakurai Sadaaki
Suwa Hisashi
Gowling Lafleur Henderson Llp
Sony Corporation
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