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US 6,788,799 B1Granted
Speaker device and associated method for manufacturing the speaker device
AssigneesPioneer Electronic Corporation, Tohoku Pioneer Electronic Corporation
InventorsToshihiro Ishigaki, Yasuhisa Abe, Yoshitaka Kobayashi
Life of this patent
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Abstract
A speaker device and associated method for producing a speaker device that includes a voice coil and a radiant layer made of a radiant energy emissive material provided on a surface of the voice coil for suppressing the heat generated at the voice coil while simultaneously improving the input durability of the speaker device.
Claims7
A speaker device comprising:
- a voice coil;
- a first radiant layer made of radiant energy emissive material provided on a surface of the voice coil, wherein an emissivity of the first radiant emissive material is higher than an emissivity of the surface of the voice coil;
- magnetic circuitry, wherein the voice coil is disposed within an air filled gap of the magnetic circuitry;
- a voice coil bobbin coupled to the voice coil;
- and
- a second radiant layer made of radiant energy emissive material provided on a surface of the voice coil bobbin, wherein an emissivity of the second radiant emissive material is higher than an emissivity of the surface of the voice coil bobbin.
3 more elements
A speaker device comprising:
- a voice coil;
- a first radiant layer made of radiant energy emissive material provided on a surface of the voice coil, wherein an emissivity of the first radiant emissive material is higher than an emissivity of the surface of the voice coil;
- magnetic circuitry, wherein the voice coil is disposed within an air filled gap of the magnetic circuitry;
- and
- a second radiant layer made of radiant energy emissive material provided within the air filled gap of the magnetic circuitry on a surface of the magnetic circuitry internal to the speaker device, wherein an infrared absorbability of the second radiant layer is higher than that of the surface of the magnetic circuitry.
2 more elements
A speaker device comprising:
- a voice coil;
- a first radiant layer made of radiant energy emissive material provided on a surface of the voice coil, wherein an emissivity of the first radiant emissive material is higher than an emissivity of the surface of the voice coil;
- external magnetic circuitry, including a magnet, a plate, and a pole yoke, wherein the voice coil is disposed within an air filled gap of the magnetic circuitry;
- and
- a second radiant layer made of a radiant energy emissive material provided on at least an external surface of the magnet not within the air filled gap of the magnetic circuitry, wherein an emissivity of the second radiant layer is higher than an emissivity of the external surface of the magnetic circuitry.
2 more elements
Dependencies are inferred from the claim text.