CN221127469U

CN221127469U - Point sound source full-frequency sound box

Info

Publication number: CN221127469U
Application number: CN202322742010.XU
Authority: CN
Inventors: 朱世平
Original assignee: Guangzhou Ruifeng Intelligent Technology Co ltd
Current assignee: Guangzhou Ruifeng Intelligent Technology Co ltd
Priority date: 2023-10-12
Filing date: 2023-10-12
Publication date: 2024-06-11
Anticipated expiration: 2033-10-12

Abstract

The utility model discloses a point sound source full-frequency sound box, which comprises a shell; the inside of the shell is provided with a sound cavity, a tweeter and a woofer unit, and the tweeter and the woofer unit are communicated with the sound cavity; an opening is formed in one side of the shell, a high-pitch diffusion horn and a low-pitch diffusion horn are arranged at the opening, the high-pitch diffusion horn is arranged at the center of the opening, and the high-pitch diffusion horn is connected with the high-pitch loudspeaker; the low-pitch diffusion horns are arranged in two, the low-pitch diffusion horns are symmetrically arranged on two sides of the high-pitch diffusion horns, phase plugs are arranged in the low-pitch diffusion horns, the low-pitch diffusion horns are connected with the low-pitch loudspeaker units, and smooth end faces are arranged at one ends, close to the low-pitch loudspeaker units, of the phase plugs. By providing the woofer unit with a bass diffusing horn and a phase plug, a better coupling between the treble and the bass can be achieved.

Description

Point sound source full-frequency sound box

Technical Field

The utility model relates to the technical field of sound boxes, in particular to a point sound source full-frequency sound box.

Background

A sound box refers to a device that can transform an audio signal into sound. The sound box is a terminal of the whole sound system, and is used for converting audio electric energy into corresponding sound energy and radiating the sound energy into space, and is an extremely important component of the sound system and is used for converting an electric signal into an acoustic signal for direct listening by human ears.

The existing loudspeaker box often has the problem of coupling between high-pitched sound and low-pitched sound during sound amplification, so that the problem of poor sound amplification effect, such as insufficient clarity of sound amplification, insufficient accuracy and insufficient coverage angle and coverage range, excessive and insufficient smoothness of sound, is caused. Therefore, in order to solve the above-mentioned problem, a new point sound source full-frequency sound box which is convenient for coupling high and low tones needs to be proposed to solve the problem.

Disclosure of utility model

The utility model aims to solve the defects in the prior art, and provides a point sound source full-frequency sound box which can realize the technical effect of better coupling between high and low tones.

In order to achieve the above object, the present utility model provides the following technical solutions:

a point sound source full-frequency sound box comprises a shell;

The inside of the shell is provided with a sound cavity, a tweeter and a woofer unit, and the tweeter and the woofer unit are communicated with the sound cavity;

An opening is formed in one side of the shell, a high-pitch diffusion horn and a low-pitch diffusion horn are arranged at the opening, the high-pitch diffusion horn is arranged at the center of the opening, and the high-pitch diffusion horn is connected with the high-pitch loudspeaker;

The low-pitch diffusion horns are arranged in two, the low-pitch diffusion horns are symmetrically arranged on two sides of the high-pitch diffusion horns, phase plugs are arranged in the low-pitch diffusion horns, the low-pitch diffusion horns are connected with the low-pitch loudspeaker units, and smooth end faces are arranged at one ends, close to the low-pitch loudspeaker units, of the phase plugs.

Preferably, the phase plug abuts against the woofer unit.

Preferably, the two woofer units are horizontally placed and abutted against each other.

Preferably, the high-pitch diffusing horn is rotatably mounted at the opening of the shell.

Preferably, a phase inversion hole is formed between the bass diffusion horn and a corner of the housing.

Compared with the prior art, the utility model has the beneficial effects that: through setting up bass diffusion horn and phase plug on the woofer unit, not only can increase the sound pressure level and the directionality of bass, and can correct the phase response of bass off-axis, avoid the distance between two woofer units far away and influence the axial of bass and the frequency upper limit of off-axis response, be favorable to improving the sensitivity of bass and make it more matees with the high-pitch sensitivity, make realize better coupling between the high-low pitch, thereby realize when the public address increase sound pressure level, make the public address more clear, increase the coverage angle and the coverage of public address, make the sound transition smoother technological effect.

Drawings

FIG. 1 is a schematic diagram of a point sound source full-frequency sound box with one side removed;

In the figure:

1. a housing; 2. a treble diffusing horn; 3. bass diffusing horns; 4. a tweeter; 5. a woofer unit; 6. a phase plug; 7. a phase inversion hole; 8. a sound cavity.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

Referring to fig. 1, the present utility model provides the following technical solutions:

A point sound source full-frequency sound box comprises a shell 1;

The inside of the shell 1 is provided with a sound cavity 8, a tweeter 4 and a woofer unit 5, and the tweeter 4 and the woofer unit 5 are communicated with the sound cavity 8;

An opening is formed in one side of the shell 1, a high-pitch diffusion horn 2 and a low-pitch diffusion horn 3 are arranged at the opening, the high-pitch diffusion horn 2 is arranged at the center of the opening, and the high-pitch diffusion horn 2 is connected with a high-pitch loudspeaker 4;

The bass diffusion clarion 3 is equipped with two, and the bass diffusion clarion 3 symmetry is located the treble diffusion clarion 2 both sides, is equipped with phase plug 6 in the bass diffusion clarion 3, and the bass diffusion clarion 3 is connected with woofer unit 5, and phase plug 6 is close to the one end of woofer unit 5 and is equipped with smooth terminal surface.

Specifically, in this embodiment, the housing 1 is a box, a common cavity of high-pitched sound and low-pitched sound is provided inside the housing 1, the high-pitched speaker 4, the low-pitched sound horn unit 5, and the corresponding high-pitched sound horn 2 and low-pitched sound horn 3 are provided, the phase plug 6 is further provided in the low-pitched sound horn 3, and a smooth end face is provided at one end of the phase plug 6 near the low-pitched sound horn unit 5, and sound waves emitted from the outlet of the low-pitched sound horn unit 5 can be compressed through the smooth end face of the phase plug 6, so that plane waves are formed to improve sound pressure, and the phase plug 3 is used as a driving source. Through the appearance layout and combined action of the bass diffusion horn 3 and the phase plug 6, the sound pressure level of bass emitted by the bass loudspeaker unit 5 can be increased, the directivity of the bass is also increased, the phase response of the bass off-axis is corrected, the axial and off-axis frequency response after 2-position bass coupling is flatter and in the angle range of-6 dB, the upper frequency limit of the axial and off-axis response of the bass is prevented from being influenced due to the distance of the bass loudspeaker unit 5, the sensitivity of the bass is favorably improved to be more matched with the sensitivity of the treble emitted by the treble loudspeaker 4, better coupling between the treble and the bass is realized, and the technical effects of increasing the sound pressure level, enabling the sound amplification to be clearer, increasing the coverage angle and coverage range of the sound amplification and enabling the sound transition to be smoother are realized.

The high-pitch diffusion horn 2 is preferably a constant-direction diffusion horn, the horizontal coverage angle is preferably 80 degrees, the vertical coverage angle is preferably 50 degrees, the maximum sound pressure level can reach 138dB, and the constant-direction frequency of the high-pitch diffusion horn 2 can reach 2000Hz through simulation and optimization, the horizontal coverage angle is 90 degrees, and the vertical coverage angle is 50 degrees.

In an alternative embodiment, the phase plug 6 abuts against the woofer unit 5.

Specifically, in this embodiment, by abutting the phase plug 6 against the woofer unit 5, the compression effect of the smooth end of the phase plug 6 against the sound wave emitted from the woofer unit 5 at the outlet can be further enhanced, which is beneficial to further increasing the sound pressure level of the bass, and facilitating the coupling of the bass and the treble.

In an alternative embodiment, both woofer units 5 are placed horizontally and against each other.

Specifically, in this embodiment, by setting the two woofer units 5 to be horizontally placed and abutted against each other, the distance between the two woofer units 5 can be shortened as much as possible, which is advantageous for further avoiding the upper frequency limit affecting the axial and off-axis response of the bass sound due to the distance of the woofer units 5.

In an alternative embodiment, the tweeter horn 2 is rotatably mounted at the opening of the housing 1.

Specifically, in this embodiment, through with the rotatory installation of high pitch diffusion horn 2 in the opening part of casing 1, be convenient for high pitch diffusion horn 2 installation and dismantlement are favorable to realizing high pitch diffusion horn 2 swift change.

In an alternative embodiment, a phase inversion hole 7 is formed between the bass diffusion horn 3 and the corner of the housing 1.

Specifically, in the present embodiment, by forming the inverter hole 7 between the bass diffusion horn 3 and the corner of the housing 1, it is advantageous to increase the sound pressure of the sound wave emitted from the woofer unit 5 toward the lower end.

The foregoing is only a preferred embodiment of the present utility model, but the scope of the present utility model is not limited thereto, and any person skilled in the art, who is within the scope of the present utility model, should make equivalent substitutions or modifications according to the technical scheme of the present utility model and the inventive concept thereof, and should be covered by the scope of the present utility model.

Claims

1. The point sound source full-frequency sound box is characterized by comprising a shell;

2. The point sound source full-frequency sound box according to claim 1, wherein: the phase plug is abutted against the woofer unit.

3. The point sound source full-frequency sound box according to claim 1, wherein: the two woofer units are horizontally arranged and mutually abutted.

4. The point sound source full-frequency sound box according to claim 1, wherein: the high-pitch diffusion horn is rotatably arranged at the opening of the shell.

5. The point sound source full-frequency sound box according to any one of claims 1 to 4, wherein: and a phase inversion hole is formed between the bass diffusion horn and the corner of the shell.