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US 8,913,773 B2Granted
Earphone device
AssigneeSony Corporation
InventorsTomohiro Matsuo, Takashi Ohta, Koji Nageno, Tomohiro Ito
Life of this patent
Estimating the term…
Abstract
An earphone device includes a housing having a driver unit, and a sound guide tube mounted on a front surface of the housing to protrude from the front surface, in which the sound guide tube is disposed at a position deviated from a center position of the housing.
Claims20
An earphone comprising:
- a housing having a driver unit;
- a voice coil in the driver unit;
- a diaphragm, a portion of which is fixed to the voice coil;
- and
- a sound guide tube mounted on a front surface of the housing to protrude from the front surface and terminating in a sound guide tube tip, wherein directly behind the front surface is a porous structure, the porous structure is a porous protection plate, and directly behind the porous protection plate is the driver unit, and wherein the sound guide tube is tilted away from and relative to a center line of the driver unit by a predetermined angle, such that a line of sight exists, looking through the sound guide tube, between the sound guide tube tip and a portion of the voice coil, and the line of sight between the sound guide tube tip and the portion of the voice coil goes through the porous protection plate.
2 more elements
An earphone device comprising:
- a housing having a driver unit;
- a voice coil in the driver unit;
- a diaphragm, a portion of which is fixed to the voice coil;
- and
- a sound guide tube mounted on a front surface of the housing to protrude from the front surface and terminating in a sound guide tube tip,
- wherein directly behind the front surface is a porous structure, the porous structure is a porous protection plate, and directly behind the porous protection plate is the driver unit, and
- wherein a line of sight exists, looking through the sound guide tube, between the sound guide tube tip and a portion of the voice coil, and the line of sight between the sound guide tube tip and the portion of the voice coil goes through the porous protection plate.
4 more elements
Dependencies are inferred from the claim text.