PURPOSE: To simplify installation of a speaker and enhance acoustic characteristic by providing a speaker that emanates sound with its inner space as a back air chamber in the upper part of a casing projected on the inner wall of a door in an automobile and contains a window open/close part.
CONSTITUTION: A casing 11 is provided projecting toward the inside of an automobile on the upholstery foam lining 2 of a door 1 in the automobile. Also, a driving part 22 and a decelerating part 21 to open/close the window 6 of the door 1 are respectively contained in the inside of the casing 11. Further, a speaker 18 that emanates sound toward occupants with its inner space as a back air chamber is provided in the upper part of the casing 11. And, a motor 12 is normally/reversely rotated by a control part 16 with the operation of a switch 17, thereby vertically moves the window 6 through a worm 13, a worm gear 14 and a shaft 15 to open/close it. Because of this, a hole to install the speaker 18 to the upholstery foam lining 2 is not necessary, and further the acoustic characteristic of the speaker 18 can be improved.
OKADA HIDEKI
IWASAKI KENJU
IWABUCHI NOBUAKI
ICHIYAMA YOSHIHIKO
TAKENO MASAHIRO
SASAMOTO TORU
