US 11,750,959 B2
Speaker device
Koji Nagata, Tokyo (JP); and Masatoshi Tanizawa, Tokyo (JP)
Assigned to SONY GROUP CORPORATION, Tokyo (JP)
Appl. No. 17/309,573
Filed by SONY GROUP CORPORATION, Tokyo (JP)
PCT Filed Nov. 6, 2019, PCT No. PCT/JP2019/043466
§ 371(c)(1), (2) Date Jun. 7, 2021,
PCT Pub. No. WO2020/121692, PCT Pub. Date Jun. 18, 2020.
Claims priority of application No. 2018-234122 (JP), filed on Dec. 14, 2018.
Prior Publication US 2022/0021957 A1, Jan. 20, 2022
Int. Cl. H04R 1/02 (2006.01); H04R 1/10 (2006.01)
CPC H04R 1/028 (2013.01) [H04R 1/10 (2013.01)] 12 Claims
OG exemplary drawing
 
1. A speaker device attachable to a helmet, the speaker device comprising:
a speaker unit configured to output a sound;
a speaker housing that includes a back wall portion that covers the speaker unit from a back side, wherein
the speaker housing includes an annular retaining portion configured to hold a portion of the speaker unit,
the speaker housing includes a space between a back surface of the speaker unit and the back wall portion, and
the space is an output space for the sound output from the back surface of the speaker unit; and
a duct that has internal space communicated with the output space, wherein
the duct includes a rectangular flat plate portion integral with the annular retaining portion of the speaker housing,
the duct is configured to guide, to an outside of the helmet, the sound output to the output space, and
a distance between the back surface of the speaker unit and the back wall portion is smaller than a distance of the internal space of the duct in a direction in which the duct guides the sound.