ACOUSTIC SIGNAL OUTPUT DEVICE
There is provided an acoustic signal output device worn on an auricle, the acoustic signal output device including a housing that emits an acoustic signal, a first wearable portion that holds the housing and is worn on a first auricle portion that is a part of the auricle, and a second wearable portion that holds the housing and is worn on a second auricle portion that is a part of the auricle different from the first auricle portion. However, the first wearable portion includes a first fixing portion that grips or sandwiches an end of the first auricle portion, and/or the second wearable portion includes a second fixing portion that grips or sandwiches an end of the second auricle portion.
1 . An acoustic signal output device worn on an auricle, the acoustic signal output device comprising:
a housing that emits an acoustic signal;
a first wearable portion that holds the housing and is configured to be worn on a first auricle portion that is a part of the auricle; and
a second wearable portion that holds the housing and is configured to be worn on a second auricle portion that is a part of the auricle different from the first auricle portion,
wherein the first wearable portion includes a first fixing portion that grips or sandwiches an end of the first auricle portion, and/or the second wearable portion includes a second fixing portion that grips or sandwiches an end of the second auricle portion.
2 . The acoustic signal output device according to claim 1 , wherein the first wearable portion includes the first fixing portion, and the second wearable portion includes the second fixing portion.
3 . The acoustic signal output device according to claim 1 , wherein
the first wearable portion holds the housing from a first outer side, and
the second wearable portion holds the housing from a second outer side different from the first outer side.
4 . The acoustic signal output device according to claim 1 , wherein
the first auricle portion is an upper portion of the auricle, and
the second auricle portion is a lower portion of the auricle or an intermediate portion between the upper portion and the lower portion of the auricle.
5 . The acoustic signal output device according to claim 4 , wherein
the first fixing portion is configured to grip a helix of the first auricle portion from above the auricle, and
the housing is configured to be suspended by the first wearable portion including the first fixing portion holding the helix.
6 . The acoustic signal output device according to claim 1 , further comprising a driver unit that emits a first acoustic signal to one side and emits a second acoustic signal that is an antiphase signal of the first acoustic signal or an approximate signal of the antiphase signal to another side,
wherein
a wall portion of the housing is provided with a single or a plurality of first sound holes that leads out the first acoustic signal emitted from the driver unit to an outside and a single or a plurality of second sound holes that leads out the second acoustic signal emitted from the driver unit to the outside,
a part of the second acoustic signal emitted from the second sound holes cancels out a part of the first acoustic signal emitted from the first sound holes,
the first wearable portion holds a first holding region of a wall portion of the housing, and the second wearable portion holds a second holding region of a wall portion of the housing,
the first sound hole is arranged on one side of a space partitioned by a virtual plane passing through the first holding region and the second holding region, and
the second sound hole is arranged on another side of the space.
7 . The acoustic signal output device according to claim 6 , wherein when a surface of the wall portion of the housing is equally divided into a plurality of unit area regions, a sum of opening areas of the second sound holes provided in a first unit area region that is one of the unit area regions including a shielded region in which the first acoustic signal emitted from the first sound hole is shielded by the first wearable portion or the second wearable portion is smaller than a sum of opening areas of the second sound holes provided in a second unit area region that is one of the unit area regions not including the shielded region.