| 摘要 |
A horn type loudspeaker comprises a drive unit, which is largely the same in structure and features as the conventional drive unit, and a horn member specially designed to effectively minimize its size and weight. Said horn member comprises a hollow disk mounting case with its inner periphery corresponding to a fixing plate of the drive unit engaged thereon, a reflection cover with a tip on its inner surface pointing downwardly towards the central portion of a hole located at the fixing plate connected to the upper inner surface of said mounting case with a plurality of discharge openings uniformly located around the outer periphery so as to overcome the restriction of the standard sizes and have a size and weight small and light enough for miniature applications such as for pocket-size security alarms.
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