| 摘要 |
PURPOSE: A portable loudspeaker is provided to make a user use the loudspeaker easily. CONSTITUTION: A portable loudspeaker(10) resembling a double CD case, comprises left-and right-hand lids(12,14) pivotally coupled about parallel axes AA and BB to side walling(16). The side walling(16) forms an open box-like enclosure, with the left-and right-hand lids(12,14) acting as the top and bottom surfaces to complete the enclosure when converting the opening at either end of the side walling(16). Each lid comprises a sound generating unit in the form of a distributed mode acoustic radiator(20). By adopting the shape of a double CD-case, the loudspeaker is more readily accepted as a portable loudspeaker by users of personal CD players. Similar considerations apply to portable loudspeakers shaped like single CD cases, audio-tape cassette cases and mini-disc cases.
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