US 12,262,187 B2
Speaker apparatus and chair
Atsushi Homma, Tokyo (JP); and Takahiro Hayasaka, Tokyo (JP)
Assigned to SONY GROUP CORPORATION, Tokyo (JP)
Appl. No. 17/999,404
Filed by SONY GROUP CORPORATION, Tokyo (JP)
PCT Filed Apr. 20, 2021, PCT No. PCT/JP2021/016041
§ 371(c)(1), (2) Date Nov. 21, 2022,
PCT Pub. No. WO2021/246069, PCT Pub. Date Dec. 9, 2021.
Claims priority of application No. 2020-095562 (JP), filed on Jun. 1, 2020.
Prior Publication US 2023/0209261 A1, Jun. 29, 2023
Int. Cl. H04R 5/02 (2006.01); A47C 1/12 (2006.01); A47C 7/72 (2006.01); B60N 2/90 (2018.01); H04R 1/28 (2006.01); H04R 1/34 (2006.01); H04S 1/00 (2006.01)
CPC H04R 5/023 (2013.01) [A47C 1/12 (2013.01); A47C 7/727 (2018.08); B60N 2/90 (2018.02); H04R 1/2826 (2013.01); H04R 1/345 (2013.01); H04S 1/007 (2013.01); H04R 2499/13 (2013.01)] 7 Claims
OG exemplary drawing
 
1. A speaker apparatus, comprising:
a casing; and
a pair of a left speaker block and a right speaker block, wherein each of the left speaker block and the right speaker block includes:
a main body section inside and outside of the casing; and
an acoustic output section inside a backrest associated with the speaker apparatus, wherein
the acoustic output section comprises a vibration plate attached to a front surface section of the casing,
the acoustic output section is configured to have an orientation of a specific angle based on a vertical movement of a headrest associated with the speaker apparatus, and
the headrest is on a front surface side of the backrest,
the pair of the left speaker block and the right speaker block is horizontally side by side relative to the headrest,
at least a part of the headrest is within a range of a nominal directivity angle of an acoustics output from the acoustic output section of the left speaker block and the acoustic output section of the right speaker block,
the nominal directivity angle is an angle smaller than 180 degrees,
the nominal directivity angle is based on a measurement of a sound pressure level on a 360 degrees circumference around an output position of the speaker apparatus, and
the sound pressure level on the 360 degrees circumference is measured based on an application of an electrical input on the pair of the left speaker block and the right speaker block.