| 摘要 |
PROBLEM TO BE SOLVED: To provide a multi-speaker type speaker box whose listening area is expanded so as to prevent the occurrence of a listening area at a feeble sound pressure level. SOLUTION: The speaker box 20 comprises a speaker box main body 21 presenting a half-divided, inverted beheaded octagonal pyramid with an opened top and a closed bottom, housing four speakers inside, and a lid 22 covering a top opening part 23 of the speaker box main body 21. The speaker box main body 21 comprises a speaker mounting plate 26 presenting an inverted beheaded octagonal pyramid in a half-divided shape configured by forming four inverted trapezoidal plates 26a to 26d in series to which speakers 4 are respectively attached from the outside, inverted trapezoidal back plates 27 covering the back parts of the speaker mounting plate 26, and a bottom plate 28 covering the back plates 27 and a bottom opened part of the speaker mounting plate 26, wherein an inner space is partitioned into two left-right symmetrical spaces by a partition plate 30. COPYRIGHT: (C)2007,JPO&INPIT
|
