Linear array loudspeaker

Abstract

The utility model provides a linear array loudspeaker, which comprises a box body, a first cavity and a second cavity which are distributed left and right and are mutually independent are arranged in the box body, a high-frequency unit is arranged in the first cavity, at least two low-frequency units are arranged in the second cavity, and the plurality of low-frequency units are longitudinally distributed in the second cavity; the high-frequency unit comprises a horn, a high-frequency driver connected to the rear end of the horn, and a diffusion plate connected to the front end of the horn. According to the linear array loudspeaker provided by the utility model, the high-frequency unit and the plurality of low-frequency units are horizontally arranged, and the plurality of low-frequency units are longitudinally arranged, so that the sound of the low-frequency unit close to the lower part is transmitted to a front field, and the sound of the low-frequency unit close to the upper part is transmitted to a far back field; the sound transmission effect of the loudspeaker in the vertical direction is improved, it is ensured that sound can uniformly cover the front field and the rear field, the problems that the sound of the front field is strong and the sound of the rear field is insufficient are solved, and the loudspeaker is more suitable for small-sized places such as small-sized report halls and banquet halls.

Description

Technical Field

[0001] The utility model belongs to the technical field of loudspeakers, and in particular relates to a line array loudspeaker. Background Art

[0002] Common line array speakers on the market feature a horizontal design. This type of speaker is often used in venues with smaller stages, such as small lecture halls and banquet halls, due to its compact size and ease of transport. Generally speaking, there are two designs for this type of speaker: the first employs two woofers on either side, with a tweeter in the center; the second employs two woofers in the center, with a tweeter on each side.

[0003] However, this design has a problem. Because multiple low-frequency drivers are arranged horizontally, they cannot effectively cover the entire vertical direction. Consequently, this structure results in overly strong sound in the front and insufficient sound in the back, creating an uneven sound distribution. Therefore, improvements are needed. Utility Model Content

[0004] In view of the shortcomings of the existing technology, the present invention proposes a line array loudspeaker to improve the sound propagation effect of the loudspeaker in the vertical direction, ensure that the sound can evenly cover the front and back fields, and make the sound propagation uniform.

[0005] The technical solution of the present utility model is achieved as follows:

[0006] A line array loudspeaker comprises: a box, wherein the box comprises a first cavity and a second cavity distributed independently on the left and right sides, a high-frequency unit is provided in the first cavity, and at least two low-frequency units are provided in the second cavity, and the plurality of low-frequency units are distributed longitudinally in the second cavity; the high-frequency unit comprises a horn, a high-frequency driver connected to the rear end of the horn, and a diffusion plate connected to the front end of the horn.

[0007] In a preferred embodiment, the horn is a curvature waveguide horn.

[0008] In a preferred embodiment, the voice coil of the high frequency driver has a diameter of 75 cores.

[0009] In a preferred embodiment, the diffuser plate includes two side plates, and the angle between the two side plates is 115°-125°.

[0010] In a preferred embodiment, the number of the low-frequency units is two.

[0011] In a preferred embodiment, the low-frequency unit is an 8-inch neodymium magnetic unit.

[0012] In a preferred embodiment, the inner side of the diffusion plate blocks the edge of the low-frequency unit.

[0013] In a preferred embodiment, a mounting groove is provided on the side of the box body.

[0014] Compared with the prior art, the utility model has the following advantages:

[0015] This utility model provides a line array loudspeaker comprising a first cavity and a second cavity, both of which are independent and distributed left and right. A high-frequency unit and a low-frequency unit are respectively disposed within the two cavities. By horizontally arranging the high-frequency unit and a plurality of low-frequency units, with the low-frequency units arranged vertically, the sound of the low-frequency units located at the bottom is transmitted to the front of the room, while the sound of the low-frequency units located at the top is transmitted to the further back of the room. This improves the vertical sound propagation effect of the loudspeaker, ensures that the sound can evenly cover the front and back of the room, and solves the problem of strong sound in the front and insufficient sound in the back. The loudspeaker is more suitable for small venues such as small lecture halls and banquet halls. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative labor.

[0017] Figure 1 This is a three-dimensional diagram of a line array loudspeaker of the present invention;

[0018] Figure 2 This is a front view of a line array loudspeaker of the present utility model;

[0019] Figure 3 The figure is a schematic diagram of the internal structure of a line array loudspeaker of the present utility model.

[0020] Figure ID:

[0021] 1- box body; 11- first cavity; 12- second cavity; 13- mounting slot;

[0022] 2-high frequency unit; 21-diffuser; 22-horn; 23-high frequency driver;

[0023] 3-Low frequency unit. DETAILED DESCRIPTION

[0024] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0025] See also Figures 1 to 3 The present invention discloses a line array loudspeaker, including a box 1, wherein the box 1 includes a first cavity 11 and a second cavity 12, which are independently distributed on the left and right sides. A high-frequency unit 2 is provided in the first cavity 11, and at least two low-frequency units 3 are provided in the second cavity 12. The low-frequency units 3 are longitudinally distributed in the second cavity 12. The high-frequency unit 2 includes a horn 22, a high-frequency driver 23 connected to the rear end of the horn 22, and a diffusion plate 21 connected to the front end of the horn 22. Specifically, the high-frequency unit 2 and the low-frequency unit 3 are placed in the first cavity 11 and the second cavity 12, respectively. Figure 1 As shown, stacking the three parts of the low-frequency unit vertically can improve the problem that the sound waves of the horizontally arranged low-frequency unit cannot cover the vertical direction. Figure 2 The diagram shows a first cavity 11 on the left and a second cavity 12 on the right, with the high-frequency driver 2 placed in the first cavity 11 and the low-frequency driver 3 in the second cavity 12. Alternatively, the diagram shows a first cavity 11 on the right and a second cavity 12 on the left. The vertical arrangement of the low-frequency driver 3 solves the problem of front-to-back coverage of low-frequency sound waves. The height of the high-frequency driver 2 in the first cavity 11 is the same as that of the low-frequency driver 3 arranged in the second cavity 12.

[0026] Furthermore, the horn 22 is preferably a curvature waveguide horn. Specifically, a curvature waveguide horn can optimize the vertical diffusion of high-frequency sound waves. By adjusting the horn's shape and size, the sound wave diffusion angle can be controlled, making it more uniform in the vertical direction, allowing high-frequency sound waves to evenly cover the front and back fields. In other words, the vertical front and back field coverage of low-frequency sound waves can be solved by longitudinally distributing multiple low-frequency units 3, while the front and back field coverage of high-frequency sound waves can be solved by the curvature waveguide horn.

[0027] The high-frequency driver 23 is the core component of the high-frequency unit 2 responsible for producing high-frequency sound. It converts electrical signals into sound waves, which are then vibrated by the diaphragm to produce high-frequency sound. The horn 22 concentrates and directs the sound waves generated by the high-frequency driver 23 in a specific direction. The diffuser 21, located in front of the horn 22, evenly disperses the sound waves in all directions, reducing the tendency for the sound waves to spread in a single direction and ensuring more uniform sound coverage throughout the entire space.

[0028] Furthermore, the voice coil diameter of the high-frequency driver 23 is 75 cores. Specifically, since a long waveguide can better control the propagation of sound waves, the longer and deeper the waveguide is, the better the sound quality effect can be provided. However, an excessively long waveguide will increase the volume of the speaker, and the present invention is applied to smaller indoor scenes. The common voice coil diameter on the market is 44 cores. The present invention reduces the volume. In order to shorten the depth of the horn 22 while maintaining good sound quality, it is necessary to increase the power of the high-frequency driver 23 and increase the voice coil diameter to 75 cores. It can withstand higher power, and the high-frequency driver 23 can operate at a higher power, providing a stronger sound pressure level and a better dynamic range. In addition, a larger voice coil diameter can better help dissipate heat.

[0029] Furthermore, the diffuser 21 includes two side panels, and the angle between the two side panels is 115°-125°. Specifically, the 115°-125° angle of the diffuser ensures uniform diffusion of sound waves in the horizontal and vertical directions, reducing the concentration and directionality of the sound waves. A too large angle will result in a wide sound wave diffusion range and energy dispersion, while a too small angle will result in a narrow sound wave diffusion range, forming hot spots and dead zones.

[0030] Furthermore, in this embodiment, there are two low-frequency units 3. Specifically, after the two low-frequency units 3 are arranged longitudinally, the sum of their heights is the same as the height of the high-frequency unit 2. Specifically, existing line array speakers mostly adopt a horizontal design, that is, two low-frequency units 3 are placed horizontally in a row. This structure has the problem of poor sound coverage in the vertical direction, resulting in louder sound in the front field and quieter sound in the back field. The present invention distributes the two low-frequency units 3 longitudinally to ensure uniform sound coverage in the longitudinal direction. The low-frequency unit 3 located at the bottom transmits sound to the near field, while the low-frequency unit 3 located at the top transmits sound to the far field, providing better coverage.

[0031] Furthermore, the low-frequency unit 3 is preferably an 8-inch neodymium magnetic unit. First, the neodymium magnetic unit is a speaker unit that uses neodymium iron boron permanent magnet material as a magnetic circuit. It can generate a larger magnetic field in a smaller space, saving space and being suitable for speaker systems that have certain requirements on volume. Secondly, the common low-frequency units 3 on the market are available in sizes of 6 inches, 8 inches and 10 inches. The smaller the size of the low-frequency unit 3, the lower its rate processing capability and the corresponding frequency range will be. The 6-inch low-frequency unit 3 has the problem of insufficient bandwidth. The 6-inch low-frequency unit 3 is affected by its size and has difficulty reaching lower frequencies. Its low-frequency diving ability is weak, and the 6-inch low-frequency unit 3 has a relatively weak power tolerance and cannot work stably at high volume and is easily damaged. Although the 10-inch low-frequency unit 3 can meet the corresponding performance, the 10-inch low-frequency unit 3 is larger in size, occupies space, and has a relatively increased weight, making it inconvenient to carry. It is not suitable for application scenarios such as small lecture halls and banquet halls. The 8-inch low-frequency unit 3 has good performance and is of moderate size, making it suitable for this scenario.

[0032] Furthermore, a DSP audio processor (not shown) is also provided in the box 1. The DSP audio processor optimizes the audio signal and improves the sound quality through functions such as signal processing, phase correction, and delay compensation.

[0033] Furthermore, a mounting groove 13 is provided on the side of the box body 1. When two or more speakers are needed, the two speakers can be engaged and stacked through the mounting grooves 13 provided therein.

[0034] Further, such as Figure 1 and Figure 2 As shown, the diffusion plate 21 blocks the edge of the low-frequency unit 3 on the inner side. Specifically, if the distance and phase relationship between the two low-frequency units 3 are inappropriate, the sound waves will interfere with each other, affecting the sound quality. By blocking the edge of the low-frequency unit 3 with the diffusion plate 21, the propagation path of the sound waves of the low-frequency unit 3 is changed, thereby reducing the direct interference between the two low-frequency units 3 and improving the sound quality. At the same time, the structure can be made more compact and the volume can be reduced. The utility model arranges the high-frequency unit 2 and several low-frequency units 3 horizontally, wherein the structure of the several low-frequency units 3 being arranged longitudinally can improve the effect of sound wave propagation of the low-frequency unit 3 in the vertical direction, avoid the situation where the front field sound is louder and the back field sound is weaker. At the same time, the baffle 21 in front of the high-frequency unit 2 blocks the edge of the low-frequency unit 2, effectively reducing the phase interference problem between the several low-frequency units 3, improving the clarity and naturalness of the low-frequency sound, and also making the speaker structure relatively compact and reducing the lateral size. It is suitable for small places such as small lecture halls and banquet halls.

[0035] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A line array loudspeaker, characterized in that: include: Box (1), The box (1) comprises a first cavity (11) and a second cavity (12) which are independently distributed on the left and right sides. A high-frequency unit (2) is provided in the first cavity (11), and at least two low-frequency units (3) are provided in the second cavity (12). The plurality of low-frequency units (3) are longitudinally distributed in the second cavity (12). The high-frequency unit (2) includes a horn (22), a high-frequency driver (23) connected to the rear end of the horn (22), and a diffusion plate (21) connected to the front end of the horn (22).

2. A line array loudspeaker according to claim 1, characterized in that: The horn (22) is a curvature waveguide horn.

3. The line array loudspeaker according to claim 1, characterized in that: The voice coil diameter of the high frequency driver (23) is 75 cores.

4. The line array loudspeaker according to claim 1, characterized in that: The diffusion plate (21) comprises two side plates, and the angle between the two side plates is 115°-125°.

5. The line array loudspeaker according to claim 1, characterized in that: The number of the low-frequency units (3) is two.

6. The line array loudspeaker according to claim 1, characterized in that: The low-frequency unit (3) is an 8-inch neodymium magnetic unit.

7. The line array loudspeaker according to claim 1, characterized in that: The inner side of the diffusion plate (21) blocks the edge of the low-frequency unit (3).

8. The line array loudspeaker according to claim 1, characterized in that: The side of the box body (1) is provided with a mounting groove (13).

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