Convective airflow using a passive radiator
AssigneeBose Corporation
InventorsRoman N. Litovsky, Chester Smith Williams
Life of this patent
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Abstract
Systems and methods to remove heat from an acoustic enclosure are provided. An apparatus for reproducing acoustic signals includes an acoustic enclosure comprising an acoustic volume. A heat producing element is coupled to the acoustic enclosure, and a thermally conductive structure is thermally coupled to the heat producing element. The thermally conductive structure includes a first surface. A first passive radiator includes a first diaphragm. The first diaphragm extends over at least a portion of the first surface and moves in response to pressure variations within the acoustic volume. Movement of the first diaphragm causes air to flow over the first surface, to facilitate heat removal from the thermally conductive structure.
Claims18
An apparatus for reproducing acoustic signals, the apparatus comprising:
- an acoustic enclosure comprising an acoustic volume;
- a heat producing element comprising a first acoustic transducer coupled to the acoustic enclosure;
- a thermally conductive structure thermally coupled to the first acoustic transducer via a low thermal resistance path, wherein the structure includes a first surface;
- and
- a first passive radiator including a first diaphragm, wherein the first diaphragm extends over at least a portion of the first surface and moves in response to pressure variations within the acoustic volume, and wherein movement of the first diaphragm causes air to flow over the first surface.
An apparatus for reproducing acoustic signals, the apparatus comprising:
- an acoustic enclosure comprising an acoustic volume;
- a heat producing element coupled to the acoustic enclosure;
- a thermally conductive structure thermally coupled to the heat producing element, wherein the structure includes a first surface;
- and
- a first passive radiator including a first diaphragm, wherein the first diaphragm extends over at least a portion of the first surface and moves in response to pressure variations within the acoustic volume, and wherein movement of the first diaphragm causes air to flow over the first surface;
- and
- a second passive radiator that includes a second diaphragm, wherein the second diaphragm extends over at least a portion of a second surface of the structure.
A method of cooling an acoustic enclosure, the method comprising:
- positioning a heat producing element comprising an acoustic transducer within the acoustic enclosure;
- thermally coupling the acoustic transducer to a thermally conductive structure via a low thermal resistance path that includes a first surface;
- and
- positioning a first passive radiator comprising a first diaphragm such that the first diaphragm extends at least partially over the first surface such that movement of the first diaphragm causes air to flow over the first surface.
Dependencies are inferred from the claim text.