Thin sound box with double phase guide tubes

A thin, speaker technology, applied in the direction of frequency/direction characteristic devices, etc., can solve the problems of serious standing waves, sound coloration of phase guide tubes, resonance of phase guide tubes, etc., and achieve the effects of ingenious structure, improved sound quality, and low distortion

CN112153520APending Publication Date: 2020-12-29WUXI JIEFU ELECTROACOUSTIC
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Patent Information

Authority / Receiving Office
CN · China
Current Assignee / Owner
Publication Date
2020-12-29

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Abstract

The invention relates to a thin sound box with double phase guide tubes, and the sound box comprises a box body and is characterized in that the box body is flat and long, the long axis direction of an upper shell of the box body is respectively provided with a loudspeaker mounting groove which is arranged in a central symmetry manner, a loudspeaker unit is arranged in each loudspeaker mounting groove, and the sound radiation direction of each loudspeaker unit faces the front of the box body; the two short side edges of the box body are each provided with a phase guide tube sound outlet hole,and the two phase guide tubes extend along the edges of the inner wall of the box body and are communicated at the position close to the middle of the box body. And the sound radiation directions of the two phase guide tubes are consistent with the sound radiation direction of the loudspeaker unit. According to the invention, the structure is ingenious, compact and reasonable, the distortion is smaller under the conditions of small size and thin thickness, the frequency response curve 4-5dB (1m / 1W) of the 100-200Hz low frequency band is effectively improved, and the tone quality is improved.
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Description

technical field

[0001] The invention relates to the technical field of loudspeaker sound boxes, in particular to a thin sound box with double phase-guiding tubes. Background technique

[0002] In the prior art, the speakers used in OLED TVs and ultra-thin notebook computers can only use small-diameter, short-stroke speaker units to radiate sound due to the thinning and miniaturization of the structure, resulting in the low frequency of the entire sound system. Poor, low sound pressure; as an improvement, the structure of the open speaker is usually adopted, and the low-frequency response characteristics are improved by setting the inverter tube, but it will bring sound coloration in the inverter tube, serious standing waves, resonance of the phase tube, and wind noise Various sound defects such as internal high-frequency sound reflected by the inverter tube. Contents of the invention

[0003] The purpose of the present invention is to overcome the deficiencies in the prio...

Examples

Embodiment Construction

[0029] The present invention will be further described below in conjunction with specific drawings and embodiments.

[0030] Such as Figure 1~Figure 4 As shown, a thin-shaped speaker with dual phase-conducting tubes is characterized in that:

[0031] It includes an upper shell 1, a lower shell 2 and a speaker unit 3, the upper shell and the lower shell are respectively provided with installation grooves for accommodating the speaker unit 3, and the speaker unit 3 is arranged in the installation groove,

[0032] Wherein the upper shell and the lower shell 2 are joined together to form a flat and long box, and a phase guide tube is arranged symmetrically on the left and right in the box.

[0033] The upper shell 1, the lower shell 2 and the phase guide tube are integrally formed and made of plastic.

[0034] The long axis direction of the box upper shell 1 is provided with a center-symmetrically arranged upper half loudspeaker installation groove 1.3, and the left upper semi-...