| 摘要 |
PURPOSE: A speaker in a car is provided to improve the going-straight characteristic of a high tone outputted through a tweeter by installing a cylindrical enclosure at the front side of the tweeter. CONSTITUTION: A speaker in a car is composed of a speaker frame(1), a plate(2), a magnet(3), a yoke(4), a bobbin(5), a voice coil(6), a tweeter(7), and a flat vibration plate(8). The speaker frame(1) is formed in the shape of a megaphone. The plate(2) is connected to back side of the speaker frame(1). The magnet(3) is connected to the rear side of the plate(2). The yoke(4), formed with a center pole(4a), sequentially penetrating the hollow parts of the magnet(3) and the plate(2), in a single unit, is installed so as to be connected to the surface of the magnet(3). At the inside of the speaker frame(1), a portion of the bobbin(5) is inserted into the hollow part of the plate(2). The center pole(4a) is inserted into the bobbin(5). The voice coil(6), wound on the outer circumferential side of the bobbin(5), receives an alternating current from an amplifier and operates the bobbin(5) up and down. The tweeter(7), connected to the front side of the bobbin(6), regenerates a high tone. The flat vibration plate(8), connected to the front side of the speaker frame(1), implements an equilibrium wave.
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