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A portable voice amplifier includes a casing providing a housing and including a flat base, a curved front wall extending from the base upwardly and over the base, when viewed from the side, to the top of the unit. A speaker is mounted in the lower portion of the curved front wall, and the casing in

A portable voice amplifier includes a casing providing a housing and including a flat base, a curved front wall extending from the base upwardly and over the base, when viewed from the side, to the top of the unit. A speaker is mounted in the lower portion of the curved front wall, and the casing includes a lower section partially formed by the lower portion of the curved front wall and having a progressively narrow depth preceding from the base to approximately the midsection of the casing. An upper section of the housing has generally uniform depth and width from the midsection to the top of the unit. The upper section is designed to be held conveniently by the hand of the user, with a microphone located on the rear of the upper housing section so that in normal use the entire unit extends below the face of the user and is conveniently and comfortably held with a single hand. The unit includes a time-of-day clock and elapsed timer, with all of the controls located adjacent the hand of the user when it is held in a normal position. A lanyard may be used to secure the unit around the neck of the user to free the user\s hands for demonstrations, hand gestures or writing on a board during a presentation. The unit is designed for clear audio speech delivery for smaller audiences and for medium sized rooms.

대표청구항 ▼

A portable, hand-held electronic voice amplifier unit comprising: a casing having a flat base, a uniformly curved front wall extending upwardly and slightly rearwardly of the front edge of said base, a lower section including a lower portion of said curved front wall and having a narrow depth procee

A portable, hand-held electronic voice amplifier unit comprising: a casing having a flat base, a uniformly curved front wall extending upwardly and slightly rearwardly of the front edge of said base, a lower section including a lower portion of said curved front wall and having a narrow depth proceeding above said base to a midsection, and an upper section having a generally uniform depth from said midsection to the top of said casing, the height and the peripheral distance about said upper section being such that a user\s hand may comfortably grasp and hold said unit in use; a speaker mounted in the lower portion of said front wall and housed within said lower section of said casing; a microphone mounted to a rear surface of said upper section of said housing adjacent the top thereof; battery means mounted in said casing for supplying electrical power; an amplifier for receiving signals from said microphone and amplifying said signals and driving said speaker; and a sound trap filling any void in a portion of said upper section below said microphone and above said speaker for isolating sound and vibration transmission between the two within said casing.