Loudspeaker box with variable directional angle and constant curvature

Abstract

The utility model provides a sound box with a variable directional angle and a constant curvature, which relates to the technical field of loudspeakers and comprises a box body. A variable-direction constant-curvature acoustic horn for loading a loudspeaker unit, wherein the variable-direction constant-curvature acoustic horn for loading the loudspeaker unit is arranged at the upper part of the inner cavity of the box body; the woofer unit is arranged in the inner cavity of the box body; and the heat dissipation units are arranged on the two sides of the box body. The variable-direction constant-curvature acoustic horn loaded with the tweeter unit, the woofer unit and the like are arranged in the box body, so that wider sound field coverage is provided, the uniformity of sound transmission in a wide area is ensured, the standing wave reflection problem is reduced, the high-frequency response is smoother, and the sound quality fidelity is kept; through the rear hanging screws, the top and bottom hanging screws and the like on the box body, the installation angle of the sound box can be adjusted according to requirements, and different sound field requirements can be met.

Description

Technical Field

[0001] The utility model relates to the technical field of loudspeakers, in particular to a loudspeaker box with a variable directivity angle and a constant curvature. Background Art

[0002] The loudspeaker generates an alternating magnetic field through a voice coil under the action of an input current. The voice coil makes a reciprocating motion perpendicular to the direction of the voice coil current under the action of the magnetic field. The voice coil is connected to the paper cone and vibrates to produce sound. The loudspeaker can be used to make audio, and the horn is used in the audio system to improve the radiation efficiency of sound, enhance the sound pressure level and improve the directivity.

[0003] The above-mentioned devices have the following defects: First, ordinary horns have a narrow coverage range in terms of the sound field, which makes the sound uneven over a large area; in terms of high frequencies, distortion is prone to occur under high pressure; in terms of frequency, there are peaks or attenuation in certain frequency bands, resulting in distorted sound quality; in terms of arrays, sound wave superposition interference often occurs, resulting in phase interference and uneven frequency response. Second, the fixed design of ordinary horns is difficult to adapt to different venue requirements and audience layouts, and has poor flexibility. This makes it difficult to fix the horn in the required position, and the coverage range of the fixed directivity is limited, resulting in uneven sound performance at different angles and distances. Therefore, a variable directivity constant curvature speaker is proposed to solve this problem. Utility Model Content

[0004] The utility model provides a variable directivity angle constant curvature sound box to solve the problems raised by the above background technology.

[0005] In order to solve the above technical problems, the technical solutions of the present utility model are as follows:

[0006] The embodiment of the present invention provides a speaker with a variable directivity angle and constant curvature, comprising:

[0007] Box;

[0008] A variable-directivity constant-curvature acoustic horn equipped with a tweeter unit, the variable-directivity constant-curvature acoustic horn equipped with the tweeter unit being disposed above the inner cavity of the cabinet, wherein a working end of the variable-directivity constant-curvature acoustic horn equipped with the tweeter unit is directed outward;

[0009] A woofer unit is disposed in the inner cavity of the cabinet and below a line aligned with a variable-directivity constant-curvature acoustic horn carrying the tweeter unit, wherein a working end of the woofer unit points outward;

[0010] Air guide holes are provided at the front of the box and are respectively provided on both sides of the variable-directivity constant-curvature acoustic horn and the woofer unit that carry the tweeter unit;

[0011] The heat dissipation unit is arranged on both sides of the box.

[0012] Through the above technical solution, the combination of a variable-directional constant-curvature acoustic horn equipped with a tweeter unit, a woofer unit and air guide holes can improve the sound quality of the audio, making the sound field and frequency band more uniform. The heat dissipation unit can dissipate the heat inside the box and increase the service life of the audio.

[0013] Furthermore, the box includes corner brackets at the connection of the panels for enhancing the stability and safety of the box. The top of the box is provided with top hanging screws, seven of which are provided. The bottom of the box is provided with top and bottom hanging screws, five of which are provided.

[0014] Through the above technical solution, the corner brackets can fix the panels that make up the box, enhancing the stability and safety of the box. The top hanging screws and top and bottom hanging screws can fix the box at the desired position through the top or bottom.

[0015] Furthermore, some of the top hanging screws and the top and bottom hanging screws are connected to the angle brackets to assemble and install the panels forming the box.

[0016] Through the above technical solution, a part of the top hanging screws and the top and bottom hanging screws are combined and installed with the panel of the box through the angle brackets, which further increases the stability and safety of the box.

[0017] Furthermore, the box body has a trapezoidal structure, and handles are installed on both sides for easy transportation. The front of the box body is installed with an iron mesh that protects the woofer unit and adds beauty.

[0018] Through the above technical solution, the handles on both sides of the box make it convenient for staff to carry it, the iron mesh can prevent the woofer unit from being damaged, and make the overall appearance more beautiful.

[0019] Furthermore, a bottom bracket for mounting a support rod is provided at the bottom of the box body, and side hanging screws are provided on both sides of the box body, with two side hanging screws provided on one side.

[0020] Through the above technical solution, the bottom bracket can facilitate the installation of the speaker on the external support rod, and the side hanging screws can enable the side of the speaker to be installed at the desired position.

[0021] Furthermore, the front and back panels of the box are fixedly mounted with a terminal block for connecting an external frequency transmission line, and the back panel of the box is provided with rear hanging screws for adjusting the vertical inclination angle of the speaker during hanging, wherein four rear hanging screws are provided.

[0022] Through the above technical solution, the rear hanging screws can enable the speaker to be installed in the desired position, wherein the desired angle can be adjusted, and the terminal block can connect the external frequency transmission lines in a unified manner.

[0023] Furthermore, the heat dissipation unit includes a heat dissipation fan, and a magnetic block is fixedly mounted on one side surface of the heat dissipation fan.

[0024] Through the above technical solution, the heat dissipation fan can extract the hot air inside the speaker.

[0025] Furthermore, both side surfaces of the box body are provided with through holes and magnetic grooves for fixing the heat dissipation fan with magnetic blocks.

[0026] Through the above technical solution, the magnetic block and the magnetic groove can fix the cooling fan.

[0027] The above solution of the utility model includes at least the following beneficial effects:

[0028] 1. This utility model uses a variable-directional constant-curvature acoustic horn with a tweeter unit installed inside the cabinet, a woofer unit installed below the variable-directional constant-curvature acoustic horn with a tweeter unit, and air guide holes opened on the cabinet surface. The horn can provide wider sound field coverage in terms of the sound field, ensuring uniform sound propagation over a wide area. In terms of high frequencies, it reduces standing waves, diffraction, and reflection problems, making the high-frequency response smoother and maintaining the fidelity of the sound quality. In terms of frequency, it reduces frequency unevenness and provides more natural and accurate sound reproduction. In terms of array, it optimizes the sound wave superposition effect between array speakers, ensuring a more consistent sound field effect, suitable for large-scale sound reinforcement applications.

[0029] Through the rear hanging screws, top and bottom hanging screws, top hanging screws, side hanging screws and bottom brackets set on the box, the speaker can adjust the installation angle according to actual needs, adapt to different sound field requirements, reduce the complexity of on-site debugging, so that the speaker can better manage the phase relationship and avoid uneven frequency response.

[0030] 2. The utility model can dissipate the heat inside the box through the cooling fan in the cooling unit, preventing the accumulation of heat from damaging the electronic components inside the box and improving the service life of the audio. The magnetic block and magnetic slot can quickly replace the cooling fan. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0032] Figure 2 This is a front structural diagram of the utility model;

[0033] Figure 3 This is a rear view structural diagram of the utility model;

[0034] Figure 4 This is a side view of the structure of the utility model;

[0035] Figure 5 This is a schematic diagram of the structure of the utility model from a top view;

[0036] Figure 6 This is a schematic diagram of the structure of the utility model when viewed from above;

[0037] Figure 7 It is a schematic structural diagram of the heat dissipation unit of the utility model.

[0038] Description of reference numerals:

[0039] 1. Cabinet; 2. Constant curvature acoustic horn with variable directivity for tweeter unit; 3. Woofer unit; 4. Terminal block; 5. Rear hanging screws; 6. Top and bottom hanging screws; 7. Bottom bracket; 8. Top hanging screws; 9. Air guide holes; 10. Iron mesh; 11. Side hanging screws; 12. Handle; 13. Corner bracket; 14. Heat dissipation unit; 141. Magnetic groove; 142. Through hole; 143. Cooling fan; 144. Magnetic block. DETAILED DESCRIPTION

[0040] The following describes exemplary embodiments of the present invention in more detail with reference to the accompanying drawings. Although exemplary embodiments of the present invention are shown in the accompanying drawings, it should be understood that the present invention can be implemented in various forms and should not be limited by the embodiments described herein. Rather, these embodiments are provided to enable a more thorough understanding of the present invention and to fully convey the scope of the present invention to those skilled in the art.

[0041] like Figures 1 to 7 As shown, an embodiment of the present invention provides a variable directivity angle constant curvature sound box, comprising:

[0042] Box 1;

[0043] A constant curvature acoustic horn 2 with a variable directivity and equipped with a tweeter unit is disposed above the inner cavity of the box 1, wherein the working end of the constant curvature acoustic horn 2 with a variable directivity and equipped with a tweeter unit points outward;

[0044] The woofer unit 3 is disposed in the inner cavity of the cabinet 1 and is located below the same straight line as the variable-directional constant-curvature acoustic horn 2 carrying the tweeter unit, wherein the working end of the woofer unit 3 points outward;

[0045] Air guide holes 9 are provided in the front of the box 1 and are respectively provided on both sides of the variable-directivity constant-curvature acoustic horn 2 and the woofer unit 3 carrying the tweeter unit;

[0046] The heat dissipation unit 14 is arranged on both sides of the box body 1.

[0047] like Figure 1 and Figure 2 As shown, the box 1 includes angle brackets 13 at the joints of the panels for enhancing the stability and safety of the box 1. The top of the box 1 is provided with seven top hanging screws 8, and the bottom of the box 1 is provided with five top and bottom hanging screws 6. The top hanging screws 8 and the top and bottom hanging screws 6 can be used to fix the top or bottom of the box 1 to a desired position.

[0048] like Figure 1 、 Figure 2 and Figure 6 As shown, some of the top hanging screws 8 and the top and bottom hanging screws 6 are connected to the angle brackets 13 to assemble and install the panels that form the box body 1. Some of the top hanging screws 8 and the top and bottom hanging screws 6 are connected to the angle brackets 13 through the panels that form the box body 1. The angle brackets 13 assemble the panels into the box body 1, increasing the stability and safety of the box body 1.

[0049] like Figure 1 、 Figure 2 and Figure 4 As shown, the box body 1 has a trapezoidal structure and is equipped with handles 12 on both sides for easy transportation. The front of the box body 1 is equipped with a metal mesh 10 to protect and beautify the woofer unit 3. The handles 12 on both sides of the box body 1 make it easier for staff to carry the speaker, and the metal mesh 10 can protect and beautify the woofer unit 3.

[0050] like Figure 1 、 Figure 4 and Figure 6 As shown, the bottom of the box 1 is provided with a base 7 for mounting a support rod, and side hanging screws 11 are provided on both sides of the box 1, with two side hanging screws 11 on each side. The base 7 can be used to mount the speaker on the external support rod, and the side hanging screws 11 can be used to install the speaker in the desired position through the side of the speaker.

[0051] like Figure 1 and Figure 3As shown, the front and back panels of the cabinet 1 are fixedly mounted with a terminal block 4 for connecting to an external frequency transmission line. The back panel of the cabinet 1 is provided with four rear hanging screws 5 for adjusting the vertical tilt angle of the speaker when hanging. The rear hanging screws 5 can be installed in the desired position through the back of the speaker and can adjust the angle. The terminal block 4 is also used to connect to the external frequency transmission line.

[0052] In the embodiment of the present invention, the angle code 13 can splice the panels into a speaker, wherein the top hanging screws 8 and the top and bottom hanging screws 6 arranged above and below the box body 1 can connect the angle code 13 to the box body 1, thereby enhancing the stability and safety of the box body 1. The top hanging screws 8, the top and bottom hanging screws 6, the side hanging screws 11 and the rear hanging screws 5 can be used to hang the speaker in the desired position through different surfaces of the speaker. The base 7 can install the speaker on the external support rod. The wiring board 4 connects the sound to be emitted through the variable-directivity constant-curvature acoustic horn 2 and the woofer unit 3 equipped with the tweeter unit. The variable-directivity constant-curvature acoustic horn 2 can improve the sound and sound quality of the speaker. The iron mesh 10 can increase the safety and aesthetics of the woofer unit 3, and the air guide hole 9 helps to reduce the resonance peak inside the speaker.

[0053] like Figure 7 As shown, the heat dissipation unit 14 includes a heat dissipation fan 143, and a magnetic block 144 is fixedly mounted on one side surface of the heat dissipation fan 143. The heat dissipation fan 143 can dissipate the heat accumulated by the internal electronic components.

[0054] like Figure 7 As shown, both sides of the housing 1 are provided with through holes 142 and magnetic grooves 141 for magnetic blocks 144 to fix the cooling fan 143. The magnetic blocks 144 are attracted to the magnetic grooves 141 to fix the cooling fan 143.

[0055] In the embodiment of the present invention, the cooling fan 143 can be installed on the surface of the box 1 by adsorbing the magnetic block 144 on the magnetic groove 141. The cooling fan 143 can discharge the heat generated by the electronic components inside the audio through the through hole 142, thereby increasing the service life of the audio.

[0056] The above is a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principles described in the present invention. These improvements and modifications should also be regarded as the scope of protection of the present invention.

Claims

1. Variable directivity constant curvature speaker, characterized by: include: Box (1); A constant curvature acoustic horn (2) with a variable directivity and loaded with a tweeter unit is provided, wherein the constant curvature acoustic horn (2) with a variable directivity and loaded with a tweeter unit is arranged above the inner cavity of the box (1), wherein the working end of the constant curvature acoustic horn (2) with a variable directivity and loaded with a tweeter unit points outwards; A woofer unit (3) is arranged in the inner cavity of the box (1) below the same straight line as the variable-directivity constant-curvature acoustic horn (2) carrying the tweeter unit, wherein the working end of the woofer unit (3) points outwards; Air guide holes (9), the air guide holes (9) are provided in the front of the box (1) and are respectively provided on both sides of a variable-directivity constant-curvature acoustic horn (2) carrying a tweeter unit and a woofer unit (3); A heat dissipation unit (14) is provided on both sides of the box body (1).

2. The variable directivity constant curvature speaker according to claim 1, characterized in that: The box body (1) includes a corner code (13) at a plate connection for enhancing the stability and safety of the box body (1); the top of the box body (1) is provided with a top hanging screw (8), and the top hanging screw (8) is provided with seven; the bottom of the box body (1) is provided with top and bottom hanging screws (6), and the top and bottom hanging screws (6) are provided with five.

3. The variable directivity constant curvature speaker according to claim 2, characterized in that: Some of the top hanging screws (8) and the top and bottom hanging screws (6) are connected to the angle brackets (13) to assemble and install the plates forming the box body (1).

4. The variable directivity constant curvature speaker according to claim 1, characterized in that: The box (1) has a trapezoidal structure, and handles (12) are installed on both sides for easy transportation. The front of the box (1) is installed with an iron mesh (10) that protects the woofer unit (3) and has an aesthetic effect.

5. The variable directivity constant curvature speaker according to claim 1, characterized in that: The bottom of the box body (1) is provided with a bottom bracket (7) for installing a support rod, and both sides of the box body (1) are provided with side hanging screws (11), and two side hanging screws (11) are provided on one side.

6. The variable directivity constant curvature speaker according to claim 1, characterized in that: The front and back panels of the box (1) are fixedly mounted with a wiring board (4) for connecting an external frequency transmission line, and the back panel of the box (1) is provided with rear hanging screws (5) for adjusting the vertical inclination angle of the speaker during hanging, wherein four rear hanging screws (5) are provided.

7. The variable directivity constant curvature speaker according to claim 1, characterized in that: The heat dissipation unit (14) comprises a heat dissipation fan (143), and a magnetic attraction block (144) is fixedly mounted on one side surface of the heat dissipation fan (143).

8. The variable directivity constant curvature speaker according to claim 1 or 7, characterized in that: Both side surfaces of the box body (1) are provided with through holes (142) and magnetic suction grooves (141) for fixing the heat dissipation fan (143) with a magnetic suction block (144).

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