Linear array sound box

Abstract

The utility model relates to the technical field of sound boxes, in particular to a linear array sound box, which comprises at least one full-frequency sound box, a power amplifier module and a bass sound box which are superposed from top to bottom, and the power amplifier module is electrically connected with the full-frequency sound box and the bass sound box respectively; a plurality of low pitch units and a plurality of high pitch units are arranged in the full-frequency sound box, a compression driver is also arranged in the full-frequency sound box, and the thickness d of the full-frequency sound box meets the following conditions: 0 lt; dlt; and presetting a thickness threshold value. According to the linear array loudspeaker box of the scheme, the full-frequency loudspeaker boxes and the bass loudspeaker boxes are overlapped, so that high-pitch and low-pitch linear arrays with different heights are formed, and the sound quality of different frequency bands can be more fully displayed. Meanwhile, the thickness of the full-frequency sound box is small, the compression driver is arranged in the full-frequency sound box, it is guaranteed that the full-frequency sound box has enough medium-high frequency sound pressure levels while the size is reduced, the maximum peak sound pressure level of a high-pitch part can achieve 136dB SPL, the installation time of the linear array sound box is saved, and the transportation cost is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of speakers, in particular to a line array speaker. Background Art

[0002] A line array speaker is composed of a row of unit boxes, which are arranged according to certain rules and can be arranged in a straight line, an arc, a "J" shape, an involute, etc. according to the needs of the sound field. The line array speaker has the advantages of high power, long projection distance, uniform sound field coverage, small interference area and high reproduction resolution, and is widely used in the field of sound reinforcement.

[0003] However, the existing line array speakers at the performance level need to have a high sound pressure level. To meet this feature, the above-mentioned line array speakers often have a large volume, which is inconvenient during transportation and assembly. Summary of the Utility Model

[0004] The purpose of the utility model is to provide a line array speaker, aiming to solve the technical problem that the existing line array speaker with a high sound pressure level has an overly large volume and is inconvenient during transportation and assembly.

[0005] To achieve the above purpose, the utility model provides a line array speaker, which includes at least one full-range speaker, a power amplifier module and a subwoofer stacked from top to bottom. The power amplifier module is electrically connected to the full-range speaker and the subwoofer respectively;

[0006] A plurality of bass units and a plurality of treble units are arranged in the full-range speaker, and a compression driver is also arranged in the full-range speaker. The thickness d of the full-range speaker satisfies: 0 < d < a preset thickness threshold.

[0007] Preferably, two partition parts are respectively arranged on both sides inside the full-range speaker. The partition parts and the side wall and the rear wall of the full-range speaker jointly enclose a sound cavity. The two partition parts form two sound cavities, and at least one bass unit is arranged in each sound cavity;

[0008] There is an installation gap between the two partition parts. The compression driver and the treble unit are arranged in the installation gap. The treble unit is located on the front side of the compression driver, and the sound-emitting end of the treble unit extends out of the installation gap and faces outward.

[0009] Preferably, the partition part includes a first partition board and a second partition board connected end to end. The first partition board inclines from the side wall of the full-range speaker towards the middle thereof, so that an angle less than 90° is formed between the first partition board and the side wall of the full-range speaker;

[0010] At least one sound outlet is formed on the first partition board, and the bass units correspond to the sound outlets one by one. The front end of the bass unit is clamped in the sound outlet, and the rear end is located in the sound cavity.

[0011] Preferably, guiding parts are arranged on two side walls of the full-frequency speaker. The guiding parts are recessed inward to form a plurality of guiding holes, and the height of the guiding holes gradually decreases from outside to inside.

[0012] Preferably, a third partition board is arranged in each of the two sound cavities. The third partition board divides the sound cavity into a first cavity and a second cavity which are distributed up and down. The bass units are arranged in both of the two first cavities and the two second cavities, and a guiding hole corresponding to each bass unit is arranged on one side of each bass unit.

[0013] Preferably, a vertically arranged fourth partition board is arranged in the bass speaker. The fourth partition board divides the bass speaker into a first cavity and a second cavity.

[0014] An installation hole is formed on the fourth partition board. The first bass speaker and the second bass speaker are both installed in the installation hole, and the first bass speaker and the second bass speaker are arranged oppositely.

[0015] Preferably, a first sound guiding channel and a second sound guiding channel are respectively recessed inward above and below the side wall of the bass speaker. The first sound guiding channel is communicated with the first cavity, and the second sound guiding channel is communicated with the second cavity.

[0016] Preferably, dust-proof nets are arranged at the ends of the first sound guiding channel and the second sound guiding channel.

[0017] Preferably, a heightening bracket is further included. The heightening bracket is located between the bass speaker and the power amplifier module.

[0018] Preferably, a base is further arranged at the lower end of the bass speaker. A plurality of rollers are arranged at the lower end of the base.

[0019] The utility model discloses a line array speaker, which has the following beneficial effects: The line array speaker in the present solution adopts a superposition of a plurality of full-frequency speakers and bass speakers to form high-frequency and low-frequency line arrays with different heights, which is beneficial to more fully display the sound quality of different frequency bands. At the same time, the full-frequency speaker is relatively thin in thickness, and a compression driver is arranged inside, ensuring that it has sufficient medium-high frequency sound pressure level while reducing the volume. The maximum peak sound pressure level of the high-frequency part can reach 136dB SPL, saving the installation time of the line array speaker and reducing the transportation cost. Description of the Drawings

[0020] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for the description of the embodiments or the prior art. Obviously, the drawings in the following description are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on the structures shown in these drawings.

[0021] Figure 1 It is a schematic diagram of the overall structure of the line array speaker of the present invention;

[0022] Figure 2 It is a schematic diagram of the internal structure of the full-frequency speaker of the line array speaker of the present invention;

[0023] Figure 3 It is a front view structure diagram of the full-frequency speaker of the line array speaker of the present invention;

[0024] Figure 4 It is a front view structure diagram of the full-frequency speaker of the line array speaker of the present invention;

[0025] Figure 5 It is a front view structure diagram of the subwoofer of the line array speaker of the present invention.

[0026] In the drawings: 1 - full-frequency speaker, 11 - woofer unit, 12 - tweeter unit, 13 - compression driver, 14 - partition part, 141 - sound-containing cavity, 1411 - first cavity, 1412 - second cavity, 142 - installation gap, 143 - first partition board, 144 - second partition board, 1441 - sound outlet, 145 - third partition board, 15 - guiding part, 151 - guiding hole, 2 - power amplifier module, 3 - subwoofer, 31 - fourth partition board, 32 - first cavity, 33 - second cavity, 34 - first bass speaker, 35 - second bass speaker, 36 - first sound guiding channel, 37 - second sound guiding channel, 38 - dust screen, 4 - heightening bracket.

[0027] The realization, functional features and advantages of the object of the present invention will be further described with reference to the embodiments and the drawings. Specific Embodiments

[0028] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the drawings in the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, rather than all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts belong to the scope of protection of the present invention.

[0029] It should be noted that if there are directional indications involved in the embodiments of the present utility model, such directional indications are only used to explain the relative positional relationship, movement conditions, etc. between components in a certain specific posture. If this specific posture changes, the directional indications will also change accordingly.

[0030] In addition, if there are descriptions such as "first", "second", etc. involved in the embodiments of the present utility model, such descriptions of "first", "second", etc. are only for descriptive purposes and cannot be construed as indicating or implying their relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include at least one such feature. In addition, the technical solutions between various embodiments can be combined with each other, but it must be based on the ability of those of ordinary skill in the art to implement. When the combination of technical solutions results in contradictions or cannot be implemented, it should be considered that such a combination of technical solutions does not exist and is not within the protection scope required by the present utility model.

[0031] As Figure 1 shown, a line array speaker includes at least one full-range speaker 1, a power amplifier module 2, and a subwoofer 3 stacked from top to bottom. The power amplifier module 2 is electrically connected to the full-range speaker 1 and the subwoofer 3 respectively;

[0032] A number of bass units 11 and a number of treble units 12 are provided in the full-range speaker 1, and a compression driver 13 is also provided in the full-range speaker 1. The thickness d of the full-range speaker 1 satisfies: 0 < d < a preset thickness threshold. (The thickness of the full-range speaker 1 in this solution can be made below 160 mm, and can be specifically reduced to 156 mm)

[0033] The full-range speaker 1 in this solution has a small volume, and the thickness can be reduced to below 160 mm. The difficulty in reducing the volume and weight of the full-range speaker 1 lies in: how to ensure a sufficiently high sound pressure level (at least 130 - 137 dB SPL) after reducing the volume and weight. The reduction of the volume of the full-range speaker 1 can be achieved by selecting small-sized bass / treble units 12, but choosing small-sized units also means that the sensitivity and power will both decrease. Since the radiation area of the unit decreases, that is, the unit efficiency decreases, and ultimately the maximum sound pressure level will drop. In order to achieve the maximum efficiency in a limited volume, the line array speaker in this solution must have a certain radiation area, and it is necessary to ensure that the front is large enough (that is, the size of the front of the speaker does not shrink), and only the thickness (depth) of the speaker is reduced, that is, the full-range speaker 1 is made thin. This requires compressing the thickness of the high-frequency part to the shortest. In order to ensure efficiency, a compression driver 13 is provided in the full-range speaker 1 of this solution to ensure that the full-range speaker 1 has sufficient mid-high frequency sound pressure level while the volume is reduced. The maximum peak sound pressure level of the high-frequency part can reach 136 dB SPL. It saves the installation time of the line array speaker and reduces the transportation cost.

[0034] One full-range speaker 1 of this solution can be provided, or two or more can be stacked on top. A number of full-range speakers 1 and subwoofers 3 are stacked vertically to form high- and low-frequency line arrays of different heights, which promote each other and are conducive to more fully demonstrating the sound quality of different frequency bands.

[0035] Furthermore, two partition parts 14 are respectively arranged on both sides inside the full-range speaker 1. The partition parts 14 and the side wall and the rear wall of the full-range speaker 1 jointly enclose a sound cavity 141. The two partition parts 14 form two sound cavities 141, and at least one bass unit 11 is arranged in each sound cavity 141;

[0036] There is an installation gap 142 between the two partition parts 14. The compression driver 13 and the tweeter 12 are arranged in the installation gap 142. The tweeter 12 is located on the front side of the compression driver 13, and the sound-emitting end of the tweeter 12 extends out of the installation gap 142 and faces outward.

[0037] Specifically, as Figures 2 to 4 shown, the two partition parts 14 divide the interior of the full-range speaker 1 into three independent spaces. The spaces on the left and right sides are two sound cavities 141. The upper ends of the two sound cavities 141 are both guiding holes 151. A plurality of bass units 11 are arranged in the two side sound cavities 141, specifically, 4-6 inch bass speakers. The compression driver 13 and the tweeter 12 are installed in the middle space. In this embodiment, two 44mm neodymium magnet compression drivers 13 are used in cooperation with the tweeter 12. After the thickness of the tweeter 12 is reduced, it has a planar waveguide with a super short path, and in cooperation with the compression driver 13, it realizes a sensitivity of 114dB SPL, a power of 40W per unit, and the maximum peak sound pressure level of the tweeter 12 reaches 136dB SPL, which is sufficient to meet the sound pressure requirements of most performances.

[0038] Furthermore, the partition part 14 includes a first partition board 143 and a second partition board 144 connected end to end. The first partition board 143 inclines from the side wall of the full-range speaker 1 towards the middle thereof, so that an angle less than 90° is formed between the first partition board 143 and the side wall of the full-range speaker 1;

[0039] At least one sound outlet 1441 is opened on the first partition board 143. The bass units 11 and the sound outlets 1441 are in one-to-one correspondence. The front end of the bass unit 11 is clamped in the sound outlet 1441, and the rear end is located in the sound cavity 141.

[0040] The separation part 14 includes a first partition board 143 and a second partition board 144. Both of the two first partition boards 143 are inclined from the side wall of the full-range speaker 1 towards the center, making the radiation areas of the multiple bass units 11 on both sides opposite to each other, so as to achieve low-frequency coupling and superposition. The rear ends of the bass units 11 are all located in the sound-containing cavity 141, and their sound-emitting ends (front ends) are clamped and fixed at the sound-emitting port 1441, emitting sound outwards.

[0041] In some embodiments, the second partition board 144 may not be a straight board, which is formed by connecting the first side edge and the second side edge end to end. The first side edge is arranged parallel to the side wall of the full-range speaker 1, one end of the second side edge is connected to the first side edge so that the included angle between them is greater than 90 degrees, and the other end of the second side edge is connected to the first partition board 143. So that the installation gap 142 formed between the two first side edges is larger, which is convenient for accommodating the compression driver 13, and the gap between the second side edge and the first partition board 143 can also better fix the tweeter 12.

[0042] Furthermore, guiding parts 15 are provided on both side walls of the full-range speaker 1. The guiding parts 15 are recessed inwards to form a plurality of guiding holes 151, and the height of the guiding holes 151 gradually decreases from outside to inside. The guiding holes 151 can make the performance of the full-range speaker 1 in different directions more uniform, and can also effectively expand the emission area, thereby improving the acoustic efficiency of the full-range speaker 1.

[0043] Furthermore, third partition boards 145 are provided in both of the sound-containing cavities 141. The third partition boards 145 divide the sound-containing cavities 141 into a first cavity 1411 and a second cavity 1412 which are distributed up and down. The bass units 11 are provided in both of the two first cavities 1411 and both of the two second cavities 1412, and a corresponding guiding hole 151 is provided on one side of each bass unit 11.

[0044] Third partition boards 145 are provided in both of the sound-containing cavities 141. The third partition boards 145 divide the sound-containing cavities 141 into two upper and lower cavities. That is, a total of four bass units 11 can be installed in the sound-containing cavities 141 on both sides. The combined use of the four bass units 11 has a better acoustic effect. At the same time, guiding holes 151 are also provided on the side of each bass unit 11, which can reduce the reverberation of the bass and make the bass effect clearer and more powerful.

[0045] Furthermore, a vertically arranged fourth partition board 31 is provided in the bass speaker 3. The fourth partition board 31 divides the bass speaker 3 into a first cavity 32 and a second cavity 33;

[0046] Installation holes are formed on the fourth partition board 31. The first bass speaker 34 and the second bass speaker 35 are both installed in the installation holes, and the first bass speaker 34 and the second bass speaker 35 are arranged opposite to each other.

[0047] As Figure 5 shown, inside the subwoofer 3 are provided two opposite first subwoofers 34 and second subwoofers 35. Both of the above two speakers can be 18-inch subwoofers. When they are arranged oppositely, the bass effect can be made lower, and at the same time, the installation space reserved inside the subwoofer 3 can be made smaller, further reducing the volume of the line array speaker.

[0048] Furthermore, above and below the side wall of the subwoofer 3 are respectively recessed inward to form a first sound guiding channel 36 and a second sound guiding channel 37. The first sound guiding channel 36 communicates with the first cavity 32, and the second sound guiding channel 37 communicates with the second cavity 33.

[0049] The first sound guiding channel 36 and the second sound guiding channel 37 communicate with the first cavity 32 and the second cavity 33 respectively. Since the second cavity 33 is located at the rear side, the length of the second sound guiding channel 37 is longer. Through the above arrangement of the sound guiding channels, the sound can be guided and propagated better, which can improve the sound performance, improve the sound quality and expand the sound field range.

[0050] Furthermore, dust-proof nets 38 are provided at the ends of the first sound guiding channel 36 and the second sound guiding channel 37 respectively. The setting of the dust-proof nets 38 does not affect the guiding propagation of the sound. Its main function is to prevent dust, and at the same time, it can also block foreign objects from entering the inside of the speaker.

[0051] Furthermore, it further includes a heightening bracket 4, and the heightening bracket 4 is located between the subwoofer 3 and the power amplifier module 2. The heightening bracket 4 can increase the height of the full-range speaker 1 and expand the sound radiation area of the full-range speaker 1. In this solution, the lengths of the full-range speaker 1, the power amplifier module 2, the heightening bracket 4 and the subwoofer 3 are approximately the same. Plug pins and a plurality of holes can be provided on both sides of the full-range speaker 1, the power amplifier module 2, the heightening bracket 4 and the subwoofer 3. The plug pins on both sides of the following components (referring to the full-range speaker 1, the power amplifier module 2, the heightening bracket 4 and the subwoofer 3) are fixed in the holes of the upper components, realizing the fixation between the components in the line array speaker.

[0052] Furthermore, a base is further provided at the lower end of the subwoofer 3, and a plurality of rollers are provided at the lower end of the base. For the convenience of moving the line array speaker, in this solution, a base with rollers is provided at the lower end of the subwoofer 3 located at the bottommost end, facilitating the user to move the line array speaker to the required position.

[0053] The above are only the preferred embodiments of the present utility model, and do not limit the patent scope of the present utility model accordingly. Any equivalent structural transformation made by using the content of the specification and drawings of the present utility model under the inventive concept of the present utility model, or any direct / indirect application in other related technical fields is included in the patent protection scope of the present utility model.

Claims

1. A line array speaker, characterized in that: It includes at least one full-range speaker (1), a power amplifier module (2), and a subwoofer (3) stacked from top to bottom. The power amplifier module (2) is electrically connected to the full-range speaker (1) and the subwoofer (3) respectively; The full-range speaker (1) is provided with a plurality of bass units (11) and a plurality of treble units (12), and a compression driver (13) is also provided in the full-range speaker (1). The thickness d of the full-range speaker (1) satisfies: 0 < d < a preset thickness threshold.

2. A line array speaker according to claim 1, characterized in that: Two partition parts (14) are respectively arranged on both sides inside the full-range speaker (1). The partition parts (14) and the side wall and the rear wall of the full-range speaker (1) jointly enclose a sound-containing cavity (141). The two partition parts (14) form two sound-containing cavities (141), and at least one of the bass units (11) is arranged in each sound-containing cavity (141); There is an installation gap (142) between the two partition parts (14). The compression driver (13) and the treble unit (12) are arranged in the installation gap (142). The treble unit (12) is located on the front side of the compression driver (13), and the sound-emitting end of the treble unit (12) extends out of the installation gap (142) and faces outward.

3. A line array speaker according to claim 2, characterized in that: The partition part (14) includes a first partition board (143) and a second partition board (144) connected end to end. The first partition board (143) inclines from the side wall of the full-range speaker (1) towards the middle thereof, so that an angle less than 90° is formed between the first partition board (143) and the side wall of the full-range speaker (1); At least one sound outlet (1441) is formed on the first partition board (143). The bass units (11) and the sound outlets (1441) are in one-to-one correspondence. The front end of the bass unit (11) is clamped in the sound outlet (1441), and the rear end is located in the sound-containing cavity (141).

4. A line array speaker according to claim 2, characterized in that: Guide parts (15) are arranged on both side walls of the full-range speaker (1). The guide parts (15) are recessed inward to form a plurality of guide holes (151), and the height of the guide holes (151) gradually decreases from outside to inside.

5. A line array speaker according to claim 4, characterized in that: Third partition boards (145) are arranged in both sound-containing cavities (141). The third partition boards (145) divide the sound-containing cavities (141) into a first cavity (1411) and a second cavity (1412) distributed up and down. The bass units (11) are arranged in both first cavities (1411) and both second cavities (1412), and a corresponding guide hole (151) is arranged on one side of each bass unit (11).

6. The line array speaker according to claim 1, characterized in that: A vertically arranged fourth partition board (31) is arranged in the subwoofer (3). The fourth partition board (31) divides the subwoofer (3) into a first cavity (32) and a second cavity (33); An installation hole is formed on the fourth partition board (31). The first bass speaker (34) and the second bass speaker (35) are both installed in the installation hole, and the first bass speaker (34) and the second bass speaker (35) are arranged oppositely.

7. A line array speaker according to claim 6, characterized in that: The upper and lower sides of the side walls of the bass speaker (3) are respectively recessed inward to form a first sound guiding channel (36) and a second sound guiding channel (37); the first sound guiding channel (36) is connected to the first cavity (32), and the second sound guiding channel (37) is connected to the second cavity (33).

8. The line array speaker according to claim 7, characterized in that: Dust-proof nets (38) are provided at the ends of the first sound-conducting channel (36) and the second sound-conducting channel (37).

9. The line array speaker according to claim 1, characterized in that: It also comprises a heightening bracket (4), wherein the heightening bracket (4) is located between the bass speaker box (3) and the power amplifier module (2).

10. The line array speaker according to claim 1, characterized in that: The lower end of the bass sound box (3) is also provided with a base, and the lower end of the base is provided with a plurality of rollers.

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