Active sound box

A speaker and box technology, which is applied in the field of audio playback equipment, can solve the problems of increasing speaker costs, high prices, and obstacles to the wide application of speakers, and achieves the effect of accelerating heat dissipation.

Active Publication Date: 2011-04-20
NINGBO SOUNDKING ELECTRONICS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The price of aluminum materials is very high, which increases the cost of speakers. At the same time, the increase of aluminum materials directly leads to the increase of the weight and volume of speakers, which has brought great obstacles to the wide application of speakers.

Method used

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Embodiment Construction

[0021] The present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments.

[0022] An active sound box, comprising a box front shell 1 and a box rear shell 2, the box front shell 1 and the box rear shell 2 form a cavity 3, the upper part of the box front shell 1 is provided with a tweeter 4, the box body The lower part of the front shell 1 is provided with a woofer 5, and the rear shell 2 of the cabinet is equipped with a power amplifier. The phase-inverting holes 6 are located on both sides below the woofer 5, and the four phase-inverting holes 6 communicate with the cavity 3. The power amplifier includes a power amplifier assembly 71 and an aluminum heat sink 72, and the power amplifier assembly 71 is fixed on the aluminum heat sink 72. The heat dissipation plate 72 is fixed on the rear shell 2 of the box body, and the power amplifier assembly 71 extends into the cavity 3 .

[0023] Sound-absorbing cotton 8 is arra...

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PUM

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Abstract

The invention discloses an active sound box, comprising a box body front shell and a box body rear shell, wherein a cavity is formed by the box body front shell and the box body rear shell; the upper part of the box body front shell is provided with a high pitch loudspeaker; the lower part of the box body front shell is provided with a low pitch loudspeaker; the box body rear shell is provided with a power amplifier; the box body front shell is provided with a plurality of inversed phase holes; the inversed phase holes are communicated with the cavity; the power amplifier comprises a power amplifier component and an aluminium dissipating plate; the power amplifier component is fixed on the aluminium heating plate which is fixed on the box body rear shell; and the power amplifier componentextends into the cavity. The active sound box has the advantages that when the active sound box is in operation, the power amplifier can generate great heat; part of the heat is dissipated through the aluminium heating plate, and the other part of the heat is dissipated into the cavity; and when the active sound box is in operation, the vibration of the low pitch loudspeaker drives the other partof heat generated by the power amplifier out through the inversed phase holes, thus further accelerating the heat dissipation of the power amplifier component.

Description

technical field [0001] The invention relates to an audio playback device, in particular to an active sound box. Background technique [0002] Speaker is a kind of audio playback equipment, which is widely used in places such as outdoor stages, theaters and conference halls. An active speaker refers to a speaker with a power amplifier (amplifier). Its structure includes a cabinet, a tweeter is installed on the upper front side of the cabinet, a woofer is installed on the lower front side of the cabinet, and a speaker is installed on the rear side of the cabinet. The groove is isolated from the inner cavity of the box, and the power amplifier is placed in the groove. Since the power amplifier will generate a lot of heat during operation, an aluminum heat sink is arranged on the power amplifier, and the aluminum heat sink is located at the outer end of the groove. The aluminum radiator can dissipate the heat generated by the power amplifier to the air as quickly as possible. ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04R1/02
Inventor 郑建国张小合
Owner NINGBO SOUNDKING ELECTRONICS
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