Ultrathin universal directional sound production module

Abstract

The utility model discloses an ultrathin universal directional sound production module, which comprises a shell, and a first directional sound production unit, a power amplifier unit and a second directional sound production unit which are arranged in the shell, and the first directional sound production unit, the power amplifier unit and the second directional sound production unit are arranged at intervals in the same direction. According to the utility model, the ultrathin directional sound production module can be realized, the modularized splicing can be carried out according to the requirements, the directional sound production module is suitable for various use specification requirements and application scenes, the applicability is greatly improved, and the generalization is realized.

Description

Technical Field

[0001] The utility model relates to the technical field of directional sound emission, in particular to an ultra-thin universal directional sound emission module. Background Art

[0002] As modern audio systems continue to evolve, the demands placed on speakers are becoming increasingly stringent. For example, in some scenarios, speakers must not only maintain sound quality but also provide a certain degree of privacy, meaning the sound must be directional and clearly transmitted within a certain range.

[0003] There are generally three methods to achieve directional propagation of sound waves. The first is to reflect the sound waves emitted by an ordinary speaker through a highly reflective parabola to form directional audible sound; the second is to use an array of ordinary speakers to form audible sound with a certain directionality; the third is to form an ultrasonic modulated wave from ultrasonic and audible sound signals, which is then amplified to drive the ultrasonic transducer to vibrate and emit an ultrasonic modulated wave, which propagates in the air and demodulates to produce audible sound.

[0004] However, the directional sound units and functional panels in existing directional speakers are generally arranged vertically, which is not conducive to the development of thinner speakers. In addition, the directional sound units are not very versatile and are not suitable for a variety of application specifications and application scenarios. Utility Model Content

[0005] The purpose of the utility model is to provide an ultra-thin universal directional sound module.

[0006] To achieve the above-mentioned objectives, the present invention proposes an ultra-thin universal directional sound module, comprising: a shell and a first directional sound unit, a power amplifier unit and a second directional sound unit installed in the shell, wherein the first directional sound unit, the power amplifier unit and the second directional sound unit are arranged at intervals in the same direction.

[0007] In a preferred embodiment, the first directional sound unit, the power amplifier unit and the second directional sound unit are arranged in the same direction in the order of left, middle and right, and / or the first directional sound unit and the second directional sound unit are symmetrically arranged on the left and right sides of the power amplifier unit respectively.

[0008] In a preferred embodiment, the housing includes a mesh cover and a rear shell, and the sound-emitting surfaces of the first directional sound-emitting unit and the second directional sound-emitting unit face the mesh cover.

[0009] In a preferred embodiment, the mesh cover and the rear shell are fixedly connected by at least one first connecting member.

[0010] In a preferred embodiment, the first connecting member connects the top corner of the mesh cover and the top corner of the rear shell, and / or the first connecting member includes an inner connecting portion and an outer connecting portion, a gap is formed between the inner connecting portion and the outer connecting portion for inserting the top corner of the mesh cover, the inner connecting portion is located on the inner side of the top corner of the rear shell and is provided with at least one fixing hole with an internal thread, the external connecting portion is provided on the outer side of the top corner of the rear shell, the top corner of the mesh cover is inserted into the gap of the connecting member and is fixed by screws passing through the rear shell and the fixing hole.

[0011] In a preferred embodiment, at least one fixing portion for mounting the ultra-thin universal directional sound module on other fixing brackets is provided on the bottom surface of the rear shell.

[0012] In a preferred embodiment, a plurality of the ultra-thin universal directional sound emitting modules are spliced and extended in the horizontal and / or vertical directions.

[0013] In a preferred embodiment, two adjacent ultra-thin universal directional sound modules are connected via a second connecting piece.

[0014] In a preferred embodiment, the first directional sound-emitting unit and the second directional sound-emitting unit both include a piezoelectric transducer array for directional sound, and the piezoelectric transducer array includes multiple rows of piezoelectric transducers, each row of piezoelectric transducers is arranged along a transverse extension, multiple rows of piezoelectric transducers are arranged along a longitudinal extension, and adjacent rows of piezoelectric transducers are arranged in an staggered manner; and / or, the first directional sound-emitting unit and the rear shell are insulated and isolated by an insulating plate, as are the second directional sound-emitting unit and the rear shell.

[0015] In a preferred embodiment, the ultra-thin universal directional sound module further includes a function interface board disposed in the housing, and the function interface board is connected to the power amplifier unit.

[0016] Compared with the prior art, the present invention has the following beneficial effects:

[0017] 1. The utility model realizes ultra-thin directional sound module by arranging the directional sound unit and the power amplifier unit in the same direction.

[0018] 2. The utility model connects the mesh cover and the rear shell of the shell through a designed connecting piece, which is convenient for disassembly, assembly and fixation of the mesh cover and the rear shell.

[0019] 3. The utility model can be modularly spliced as needed, and is suitable for a variety of usage specifications and application scenarios, greatly improving applicability and achieving universality.

[0020] 4. The utility model can be fixed to a commonly used fixed bracket on the market, which is convenient for standing or other use states, further improving the versatility of the module. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 This is a schematic diagram of the three-dimensional structure of the directional sound module of the utility model;

[0022] Figure 2 This is a schematic diagram of the explosion structure of the directional sound module of the utility model;

[0023] Figure 3 This is a schematic diagram of the rear view structure of the directional sound module of the utility model with a second connecting member;

[0024] Figure 4 This is a schematic diagram of the three-dimensional structure of the first connecting member of the utility model;

[0025] Figure 5 This is a schematic diagram of an integrated ceiling assembly formed by multiple directional sound modules of the utility model.

[0026] The accompanying drawings are:

[0027] 1. Shell, 11. Mesh cover, 12. Back shell, 121. Perforation, 122. Fixing part, 2. First directional sound unit, 21. First circuit substrate, 3. Power amplifier unit, 4. Second directional sound unit, 41., 5. First connecting part, 51. Internal connecting part, 511. Fixing hole, 52. External connecting part, 53. Gap, 54. Screw, 6. Piezoelectric transducer array, 61. Piezoelectric transducer, 7. Insulating plate, 8. Functional interface board, 9. Shielding plate, 10. Second connecting part. DETAILED DESCRIPTION

[0028] The specific implementation methods of the present invention are described in detail below, but it should be understood that the protection scope of the present invention is not limited by the specific implementation methods.

[0029] Unless expressly stated otherwise, throughout the specification and claims, the term "comprise" or variations such as "include" or "comprising", etc., will be understood to include the stated elements or components but not to exclude other elements or other components.

[0030] like Figures 1 to 3 As shown, the utility model is an ultra-thin universal directional sound module, which mainly includes a shell 1 and a first directional sound unit 2, a power amplifier unit 3 and a second directional sound unit 4 installed in the shell 1, wherein the first directional sound unit 2, the power amplifier unit 3 and the second directional sound unit 4 are arranged at intervals in the same direction to realize the ultra-thin design of the directional sound module.

[0031] Specifically, the housing 1 includes a mesh cover 11 and a rear shell 12. The mesh cover 11 serves as the front shell of the housing 1, and the portions corresponding to the two directional sound-emitting units are densely covered with sound-permeable holes (not shown) for sound emission. In this embodiment, the housing 1 is generally in the shape of a hollow, flat rectangular parallelepiped.

[0032] Preferably, in order to facilitate external assembly and disassembly of the mesh cover 11 and the rear shell 12, specifically to facilitate fixing the mesh cover 11 and the rear shell 12 after the directional sound unit and the power amplifier unit 3 are installed in the housing 1. The present invention specifically adds a first connecting member 5 for achieving a fixed connection between the mesh cover 11 and the rear shell 12. Specifically, the top corners of the mesh cover 11 and the top corners of the rear shell 12 are fixedly connected through the first connecting member 5. Since the housing 1 has four top corners in this embodiment, a first connecting member 5 is provided at each of the four top corners. Of course, in other embodiments, the first connecting member 5 is not limited to being provided at the top corners of the housing 1, and the number is not limited to the four provided here, and can be provided according to actual needs.

[0033] In this embodiment, combined with Figure 4 As shown, the first connecting member 5 specifically includes an inner connecting portion 51 and an outer connecting portion 52, wherein a gap 53 is formed between the inner connecting portion 51 and the outer connecting portion 52 for inserting the top corner of the mesh cover 11. In order to correspond to the top corner shape of the shell 1, the inner connecting portion 51 and the outer connecting portion 52 are both configured as angled shapes. After installation, the inner connecting portion 52 is located on the inner side of the top corner of the rear shell 12 and the inner connecting portion 51 is provided with at least one fixing hole 511 with an internal thread. In this embodiment, one such fixing hole 511 is provided on each of the two angled corners of the inner connecting portion 51, and a through-hole 121 corresponding to the fixing hole 511 is provided on the rear shell 12. The outer connecting portion 52 is provided on the outer side of the top corner of the rear shell 12 and is used as the rear shell top corner, so that the outer connecting portion 52 and the rear shell 12 are visually integrated, thereby increasing the aesthetics of the shell 1. During installation, the sides of the mesh cover 11 are entirely embedded in the sides of the rear housing 12, and the top corners of the mesh cover 11 are inserted into the corresponding gaps 53 of the first connecting member 5. Screws 54 are then threaded through the through-holes 121 in the rear housing 12 and the fixing holes 511 in the inner connecting portion 51 to secure the mesh cover 11. Of course, the first connecting member 5 is not limited to the above structure, and other structures that can achieve a fixed connection between the mesh cover 11 and the rear housing 12 are also applicable to the present invention.

[0034] In this embodiment, the first directional sound unit 2, the power amplifier unit 3, and the second directional sound unit 4 are arranged in the same direction (e.g., in the horizontal direction in this embodiment) in the order of left, center, and right. Specifically, the first directional sound unit 2 and the second directional sound unit 4 are preferably symmetrically arranged on the left and right sides of the power amplifier unit 3, respectively, to achieve a symmetrical arrangement while improving the user's listening experience. Of course, in other embodiments, the arrangement structure of the first directional sound unit 2, the power amplifier unit 3, and the second directional sound unit 4 in the same direction can also be arranged according to actual needs and is not limited to the symmetrical arrangement shown here.

[0035] In this embodiment, the first directional sound emitting unit 2 and the second directional sound emitting unit 4 both include piezoelectric transducer arrays for directional sound. The first directional sound emitting unit 2 includes a first circuit substrate 21 and a piezoelectric transducer array 6 disposed on the first circuit substrate 21, and the second directional sound emitting unit 4 includes a second circuit substrate 41 and a piezoelectric transducer array 6 disposed on the second circuit substrate 41. The first circuit substrate 21 and the second circuit substrate 41 are spaced apart within the housing 1. The piezoelectric transducer array 6 includes multiple rows of piezoelectric transducers 61, each row of piezoelectric transducers 61 extending in the transverse direction. Multiple rows of piezoelectric transducers 61 are arranged in the longitudinal direction, and the piezoelectric transducers 61 in adjacent rows are staggered. In a preferred embodiment, any three adjacent piezoelectric transducers 61 in two adjacent rows of piezoelectric transducers 61 form an equilateral triangle, so that the piezoelectric transducer array 6 obtains an optimal arrangement, and the first directional sound emitting unit 2 and / or the second directional sound emitting unit 4 output sound waves more uniformly. Furthermore, the sound emitting surface of the first directional sound emitting unit 2 and the sound emitting surface of the second directional sound emitting unit 4 are arranged side by side, and the sound emitting surfaces of the two are oriented in the same direction, both toward the mesh cover 11, so that the first directional sound emitting unit 2 and the second directional sound emitting unit 4 can output sound waves evenly.

[0036] Preferably, in order to insulate and isolate the first circuit substrate 21 of the first directional sound unit 2, the second circuit substrate 41 of the second directional sound unit 4 from the rear shell 12, the utility model insulates and isolates the first directional sound unit 2 and the rear shell 12 and the second directional sound unit 4 and the rear shell 12 through an insulating plate 7. During implementation, the insulating plate 7 can be realized by a Mylar board.

[0037] The power amplifier unit 3 is fixed in the housing 1 and is electrically connected to the first circuit substrate 21 and the second circuit substrate 41 respectively. The audio signal is processed by the power amplifier unit 3 and output to the first directional sound unit 2 and / or the second directional sound unit 4. The first directional sound unit 2 and the second directional sound unit 4 respectively output the audio of the first channel (such as the left channel) and the second channel (such as the right channel) to form stereo. The functional interface board 8 is arranged in the housing 1, which specifically includes an adapter board (not shown) electrically connected to the power amplifier unit 3 and one or more functional interfaces (not shown) arranged on the adapter board. The functional interfaces include but are not limited to a MIC interface, a Bluetooth interface, an audio input interface and a type-c interface, etc., which can further expand the functional scenarios of the ultra-thin universal directional sound module. Preferably, a shielding plate 9 is also provided between the power amplifier unit 3 and the mesh cover 11 to achieve the invisible appearance of the power amplifier unit 3 through the mesh cover 11, thereby improving the overall aesthetics of the module.

[0038] In addition, at least one fixing portion 122 is provided on the bottom surface of the rear shell 12 for mounting the ultra-thin universal directional sound module on other fixing brackets (not shown). Through the fixing portion 122, the module can be fixed to a more common fixing bracket on the market, which is convenient for standing, vertical placement or other usage states, further improving the versatility of the module.

[0039] In addition, the directional sound module of the present invention can be spliced and extended horizontally and / or vertically as needed, so that it can be applied to a variety of usage specifications and application scenarios, greatly improving its applicability and achieving universalization. Specifically, this can be achieved through a second connecting member 10, which connects the top corners of each module. For example, one second connecting member 10 can realize the splicing of four directional sound modules, and after splicing, an integrated ceiling combination can be formed, such as Figure 5 shown.

[0040] The advantages of the present invention are as follows: 1. By arranging the directional sound unit and the power amplifier unit in the same direction, the present invention achieves an ultra-thin directional sound module. 2. The present invention connects the mesh cover and the back shell of the shell through a designed connector, which facilitates the disassembly, assembly and fixation of the mesh cover and the back shell. 3. The present invention can be modularly spliced as needed, suitable for a variety of usage specifications and application scenarios, greatly improving applicability and achieving universalization. 4. The present invention can be fixed to a more common fixing bracket on the market, facilitating vertical placement or other usage states, further improving the versatility of the module.

[0041] The foregoing descriptions of specific exemplary embodiments of the present invention are for purposes of illustration and description. These descriptions are not intended to limit the present invention to the precise forms disclosed, and it is apparent that many modifications and variations are possible in light of the foregoing teachings. The exemplary embodiments have been selected and described for the purpose of explaining the specific principles of the present invention and their practical application, thereby enabling those skilled in the art to realize and utilize a variety of exemplary embodiments of the present invention and various options and variations. The scope of the present invention is intended to be defined by the claims and their equivalents.

Claims

1. An ultra-thin universal directional sound module, characterized in that: It includes a shell and a first directional sound unit, a power amplifier unit and a second directional sound unit installed in the shell. The first directional sound unit, the power amplifier unit and the second directional sound unit are arranged in sequence of left, middle and right in the horizontal direction.

2. The ultra-thin universal directional sound module according to claim 1, characterized in that: The first directional sound emitting unit and the second directional sound emitting unit are symmetrically arranged on the left and right sides of the power amplifier unit respectively.

3. The ultra-thin universal directional sound module according to claim 1, characterized in that: The housing includes a mesh cover and a rear shell, and the sound-emitting surfaces of the first directional sound-emitting unit and the second directional sound-emitting unit face the mesh cover.

4. The ultra-thin universal directional sound module according to claim 3, characterized in that: The mesh cover and the rear shell are fixedly connected via at least one first connecting member.

5. The ultra-thin universal directional sound module according to claim 4, characterized in that: The first connecting member connects the top corner of the mesh cover and the top corner of the rear shell, and / or the first connecting member includes an inner connecting portion and an outer connecting portion, a gap is formed between the inner connecting portion and the outer connecting portion for inserting the top corner of the mesh cover, the inner connecting portion is located on the inner side of the top corner of the rear shell and is provided with at least one fixing hole with an internal thread, the external connecting portion is provided on the outer side of the top corner of the rear shell, the top corner of the mesh cover is inserted into the gap of the connecting member and is fixed by screws passing through the rear shell and the fixing hole.

6. The ultra-thin universal directional sound module according to claim 3, characterized in that: At least one fixing portion for mounting the ultra-thin universal directional sound emitting module on other fixing brackets is provided on the bottom surface of the rear shell.

7. The ultra-thin universal directional sound module according to claim 1, characterized in that: A plurality of the ultra-thin universal directional sound-emitting modules are spliced and extended in the horizontal and / or vertical directions.

8. The ultra-thin universal directional sound module according to claim 7, characterized in that: Two adjacent ultra-thin universal directional sound modules are connected via a second connecting piece.

9. The ultra-thin universal directional sound module according to claim 3, characterized in that: The first directional sound unit and the second directional sound unit both include a piezoelectric transducer array for directional sound, and the piezoelectric transducer array includes multiple rows of piezoelectric transducers, each row of piezoelectric transducers is arranged along the horizontal extension, and multiple rows of piezoelectric transducers are arranged along the longitudinal extension, and the piezoelectric transducers in adjacent rows are staggered; and / or, the first directional sound unit and the rear shell are insulated and isolated by an insulating plate.

10. The ultra-thin universal directional sound module according to claim 1, characterized in that: The ultra-thin universal directional sound module further includes a function interface board disposed in the housing, and the function interface board is connected to the power amplifier unit.

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