Planar waveguide horn

Abstract

The embodiment of the utility model provides a planar waveguide horn, and the horn comprises a rectangular housing which is provided with an inlet, an outlet, and an accommodation cavity located between the inlet and the outlet. The waveguide structure is positioned in the accommodating cavity; wherein the waveguide structure has a plurality of arc-shaped channel partitions forming a plurality of channels from the inlet to the outlet and arc-shaped phase plates, one arc-shaped phase plate being located in one channel to divide sound in the channel. According to the technical scheme provided by the embodiment of the invention, the sound can reach the outlet from the inlet at the same time, the sound phase is accurate and consistent, mutual interference and distortion of the sound are effectively avoided, and a high pitch part obtains uniform and consistent directivity in a coverage range.

Description

Technical Field

[0001] The present application relates to the technical field of audio equipment, and in particular to a planar waveguide horn. Background Art

[0002] The working principle of the horn speaker is to generate sound waves by vibrating the diaphragm of the speaker, and then use the horn structure to amplify and transmit the sound waves. After the traditional horn is installed and connected to the tweeter drive unit, the sound phase accuracy is low, the sounds interfere and distort with each other, resulting in uneven directivity of the treble part of the sound within the coverage range.

[0003] It should be noted that the above content is not necessarily prior art, nor is it intended to limit the scope of patent protection of this application. Utility Model Content

[0004] The embodiments of the present application provide a planar waveguide horn to solve or alleviate one or more of the technical problems mentioned above.

[0005] As one aspect of an embodiment of the present application, an embodiment of the present application provides a planar waveguide horn, including:

[0006] A rectangular housing, wherein the rectangular housing is provided with an inlet and an outlet, and a receiving cavity located between the inlet and the outlet;

[0007] A waveguide structure, wherein the waveguide structure is located in the accommodating cavity;

[0008] The waveguide structure includes a plurality of arc-shaped channel baffles and an arc-shaped phase plate, wherein the plurality of arc-shaped channel baffles form a plurality of channels from the inlet to the outlet, and an arc-shaped phase plate is located in a channel to divide the sound in the channel.

[0009] Optionally, there are two waveguide structures, one waveguide structure corresponds to one inlet, and the two waveguide structures are symmetrically located on two sides of the accommodating cavity.

[0010] Optionally, two symmetrical first arc-shaped channel partitions;

[0011] Two symmetrical second arc-shaped channel partitions;

[0012] Two symmetrical third arc-shaped channel partitions;

[0013] Wherein, two of the first arc-shaped channel partitions form a closed structure and are located in the middle of the plurality of arc-shaped channel partitions;

[0014] The first arc-shaped channel partition plate and the second arc-shaped channel partition plate located on the same side are arranged at intervals to form a first channel;

[0015] The second arc-shaped channel partition plate and the third arc-shaped channel partition plate located on the same side are arranged at an interval to form a second channel.

[0016] Optionally, the arc-shaped channel partition is a curved plate composed of one or more arcs.

[0017] Optionally, the arc-shaped phase plate extends from the outlet toward the inside of the corresponding channel;

[0018] Wherein, the length of the arc-shaped phase plate is between 1 / 2 and 2 / 3 of the corresponding channel length.

[0019] Optionally, the planar waveguide horn is characterized in that the outlet is a grid sound outlet.

[0020] Optionally, the inlet is a circular sound inlet.

[0021] Optionally, the rectangular housing is a rectangular flat structure.

[0022] Optionally, it further comprises a diffusion portion;

[0023] The diffuser is located at the outlet.

[0024] Optionally, the diffusion portion is a fan-shaped sound wave diffusion plate.

[0025] The above technical solution adopted in the embodiment of the present application may have the following advantages:

[0026] The waveguide structure in the rectangular shell accommodating cavity is provided with a plurality of arc-shaped channel partitions, and the channel formed between the arc-shaped channel partitions is provided with an arc-shaped phase plate. When the sound wave passes through the channel, the arc-shaped phase plate divides the sound wave into two, so that the sound wave guiding path from the entrance to the exit is synchronized, so that the sound can arrive at the exit at the same time, the sound phase is accurately consistent, and the mutual interference and distortion of the sound is effectively avoided, so that the treble part can obtain uniform and consistent directivity within the coverage range. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] In the accompanying drawings, unless otherwise specified, the same reference numerals throughout the multiple drawings represent the same or similar parts or elements. These drawings are not necessarily drawn to scale. It should be understood that these drawings only depict some embodiments disclosed in the present application and should not be regarded as limiting the scope of the present application.

[0028] Figure 1 It is a schematic diagram of the structure of the planar waveguide horn provided in an embodiment of the present application.

[0029] Figure 2 It is a cross-sectional view of a planar waveguide horn provided in an embodiment of the present application.

[0030] Figure 3It is a cross-sectional view of a planar waveguide horn provided in an embodiment of the present application.

[0031] Figure 4 It is a top view of the planar waveguide horn provided in an embodiment of the present application.

[0032] Description of reference numerals:

[0033] 1. Rectangular shell; 11. Accommodating cavity; 2. Waveguide structure; 21. Phase plate; 22. First arc-shaped channel baffle; 23. Second arc-shaped channel baffle; 24. Third arc-shaped channel baffle; 25. First channel; 26. Second channel; 27. Grid sound outlet; 28. Sound inlet; 3. Diffuser. DETAILED DESCRIPTION

[0034] In order to make the purpose, technical solution and advantages of the present application more clear, the present application is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be noted that the embodiments and features in the embodiments of the present application can be combined with each other without conflict. The present application will be described in detail below with reference to the accompanying drawings and in conjunction with the embodiments.

[0035] It should be noted that the terms "first", "second", etc. in the specification and claims of the present application and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that the terms used in this way can be interchangeable where appropriate, so that the embodiments of the present application described herein can be implemented in an order other than those illustrated or described herein, for example. In addition, the terms "including" and "having" and any of their variations are intended to cover non-exclusive inclusions, for example, a process, method, system, product or device that includes a series of steps or units is not necessarily limited to those steps or units that are clearly listed, but may include other steps or units that are not clearly listed or inherent to these processes, methods, products or devices.

[0036] The following provides an explanation of the terms used in this application.

[0037] To facilitate those skilled in the art to understand the technical solutions provided in the embodiments of the present application, the relevant technologies are described below:

[0038] The waveguide structure in the rectangular shell accommodating cavity is provided with multiple arc-shaped channel partitions. The channel formed between the arc-shaped channel partitions is provided with an arc-shaped phase plate. During the transmission of the sound wave from the entrance to the exit, the sound wave is divided into two, so that the sound wave guiding path from the entrance to the exit is synchronized, so that the treble part can obtain uniform and consistent directivity within the coverage range, and at the same time effectively avoids mutual interference and distortion of the sounds, so that the sound phase is accurately consistent.

[0039] To this end, the embodiment of the present application provides a planar waveguide horn technical solution. Based on this, the waveguide structure 2 in the accommodating cavity 11 of the rectangular housing 1 is provided with a plurality of arc-shaped channel baffles, and the channel formed between the arc-shaped channel baffles is provided with an arc-shaped phase plate 21. When the sound wave passes through the channel, the arc-shaped phase plate 21 divides the sound wave into two, so that the sound wave guide path from the entrance to the exit is synchronized, so that the sound can reach the exit at the same time, the sound phase can be accurately consistent, and the mutual interference and distortion of the sound can be effectively avoided, so that the treble part can obtain uniform and consistent directivity within the coverage range. See below for details.

[0040] Hereinafter, exemplary embodiments according to the present application will be described in more detail with reference to the accompanying drawings. It should be noted that these exemplary embodiments can be implemented in many different forms and should not be construed as being limited to the embodiments described herein.

[0041] like Figures 1 to 4 As shown, the planar waveguide horn may include: a rectangular housing 1 and a waveguide structure 2. In some embodiments, the planar waveguide horn further includes: a diffusion portion 3.

[0042] The rectangular housing 1 is provided with an entrance and an exit, and a receiving cavity 11 located between the entrance and the exit. In some embodiments, the rectangular housing can be made of metal material or other materials, and its shape is a rectangle or other figures. The entrance and the exit are located at both ends of the rectangular housing 1, and the receiving cavity 11 is used to place the waveguide structure 2.

[0043] The waveguide structure 2 is located in the accommodating cavity 11 .

[0044] The waveguide structure 2 includes a plurality of arc-shaped channel baffles and an arc-shaped phase plate 21, wherein the plurality of arc-shaped channel baffles form a plurality of channels from the inlet to the outlet, and an arc-shaped phase plate 21 is located in one channel to divide the sound in the channel.

[0045] Specifically, the shape of the arc-shaped channel baffle can be arc-shaped or curved, and the sound wave guiding paths of the sound from the inlet through these channels to the outlet are synchronous and consistent. The arc-shaped phase plate 21 in the channel is adapted to the channel.

[0046] Specifically, two adjacent arc-shaped channel partitions and the inner wall of the rectangular shell 1 are combined to form a channel with openings at both ends.

[0047] In this embodiment, the rectangular housing 1 forms a channel in the waveguide structure through a plurality of arc-shaped channel partitions. An arc-shaped phase plate 21 is provided in the channel formed between two adjacent arc-shaped channel partitions. When the sound wave passes through a channel, the arc-shaped phase plate 21 in the channel divides the sound wave into two, so that the sound wave guiding paths from the entrance to the exit are synchronized, so that the sounds can arrive at the exit at the same time, the sound phases can be precisely consistent, and mutual interference and distortion of the sounds can be effectively avoided, so that the treble part can obtain uniform and consistent directivity within the coverage range.

[0048] In an optional embodiment, there are two waveguide structures 2, one waveguide structure 2 corresponds to one entrance, and the two waveguide structures 2 are symmetrically located on both sides of the accommodating cavity 11. The number of waveguide structures can be other numbers, which is not limited here.

[0049] In this embodiment, the two waveguide structures 2 are symmetrically arranged on both sides of the accommodating cavity 11. The two waveguide structures 2 can be installed and fixed together with the two tweeter drive units and conform to the linear plane wave characteristics, thereby improving the phase consistency and balance of the double-entry sound.

[0050] In an optional embodiment, the plurality of arc-shaped channel baffles may include: two symmetrical first arc-shaped channel baffles 22; two symmetrical second arc-shaped channel baffles 23; and two symmetrical third arc-shaped channel baffles 24. These arc-shaped channel baffles may be made of metal materials or other materials. The number of arc-shaped channel baffles is not limited, and the number of arc-shaped channel baffles may be increased or decreased according to actual needs. The arc-shaped channel baffles have different curvatures and degrees of curvature according to their different positions in the waveguide structure 2.

[0051] The two first arc-shaped channel baffles 22 and the inner wall of the rectangular housing 1 form a closed structure and are located in the middle of the plurality of arc-shaped channel baffles. The closed structure of the first arc-shaped channel baffle 22 is now a symmetrical structure, and other fixing components can be set in the closed structure to make the rectangular housing 1 and the waveguide structure 2 more stable.

[0052] The first arc-shaped channel baffle 22 and the second arc-shaped channel baffle 23 located on the same side are spaced apart to form a first channel 25; the second arc-shaped channel baffle 23 and the third arc-shaped channel baffle 24 located on the same side are spaced apart to form a second channel 26. These channels are formed by the gaps between adjacent arc-shaped channels and are used to guide sound to be transmitted in the waveguide structure 2.

[0053] In this embodiment, the sound segmentation, guidance and transmission are achieved through the layout and structure of the internal channel of the waveguide structure 2. The transmission efficiency and quality of the sound in the channel can be improved through the carefully designed arc channel partition, so that the sound wave guiding path from the entrance to the exit is synchronized and consistent.

[0054] In an optional embodiment, the arc-shaped channel partition is a curved plate composed of one or more arcs.

[0055] In an optional embodiment, the arc-shaped phase plate 21 extends from the outlet to the inside of the corresponding channel. The arc-shaped phase plate 21 extends into the inside of the channel to better adjust the phase of the sound.

[0056] The length of the arc phase plate 21 is between 1 / 2 and 2 / 3 of the corresponding channel length. This channel length range can be adjusted according to specific acoustic requirements and design parameters to achieve phase adjustment and optimized transmission of sound.

[0057] In this embodiment, the phase adjustment and transmission effect of the sound are further optimized by extending the arc phase plate 21. By accurately designing the length of the arc phase plate 21, accurate adjustment and optimized propagation of the sound can be achieved, thereby improving the acoustic performance and transmission efficiency of the waveguide structure 2.

[0058] In an optional embodiment, the outlet is a grid sound outlet 27. It should be noted that the grid sound outlet can be a rectangular structure. Of course, it can also be other geometric shapes, depending on the design requirements and application scenarios.

[0059] In this embodiment, the design of the grid sound outlet can affect the scattering and distribution of sound to achieve uniform distribution and propagation of sound.

[0060] In an optional embodiment, the inlet is a circular sound inlet 28. The design of the circular inlet helps the sound waves to smoothly enter the waveguide structure, reducing the reflection and loss of the sound.

[0061] In an optional embodiment, the rectangular housing 1 is a rectangular flat structure. The rectangular housing 1 may be rectangular in shape. This design helps to reduce the volume and weight of the waveguide structure while making it easier to install and arrange. The flat rectangular housing is suitable for compact design in a speaker or acoustic device.

[0062] In an optional embodiment, the planar waveguide horn further includes a diffusion portion 3. The diffusion portion 3 is located at the outlet. The diffusion portion 3 can be made of metal material or other materials. The diffusion portion can be designed as a fan-shaped structure.

[0063] In this embodiment, the design of the diffusion part 3 helps to optimize the scattering and distribution of sound, so that the sound can fully fill the surrounding space and enhance the auditory experience of the audience.

[0064] In an optional embodiment, the diffusion portion 3 is a fan-shaped sound wave diffusion plate. The fan-shaped sound wave diffusion plate can reduce the reflection and interference of sound, making the propagation of sound smoother and more continuous.

[0065] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present application. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprising" and / or "including" are used in this specification, it indicates the presence of features, steps, operations, devices, components and / or combinations thereof.

[0066] For the convenience of description, the orientation or position relationship indicated by directional words such as "front, back, up, down, left, right", "lateral, vertical, vertical, horizontal" and "top, bottom" is usually based on the orientation or position relationship shown in the drawings, and is only for the convenience of describing the present application and simplifying the description. Unless otherwise stated, these directional words do not indicate or imply that the device or element referred to must have a specific orientation or be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the scope of protection of the present application; the directional words "inside and outside" refer to the inside and outside relative to the outline of each component itself. For example, if the device in the drawings is inverted, the device described as "above other devices or structures" or "above other devices or structures" will be positioned as "below other devices or structures" or "below other devices or structures". Therefore, the exemplary term "above..." can include both "above..." and "below..." orientations. The device can also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatial relative descriptions used here are interpreted accordingly.

[0067] Unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection, an electrical connection, or a communication; it can be a direct connection, or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0068] Unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may include the first and second features being in direct contact, or may include the first and second features not being in direct contact but being in contact through another feature between them. Moreover, a first feature being "above", "above" and "above" a second feature includes the first feature being directly above and obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature includes the first feature being directly above and obliquely above the second feature, or simply means that the first feature is lower in level than the second feature.

[0069] Unless otherwise specifically stated, the relative arrangement, numerical expressions and numerical values ​​of the parts and steps set forth in these embodiments do not limit the scope of the present application. At the same time, it should be understood that, for ease of description, the sizes of the various parts shown in the accompanying drawings are not drawn according to the actual proportional relationship. The technology, method and equipment known to those of ordinary skill in the relevant field may not be discussed in detail, but in appropriate cases, the technology, method and equipment should be considered as a part of the authorization specification. In all examples shown and discussed here, any specific value should be interpreted as being merely exemplary, rather than as a limitation. Therefore, other examples of exemplary embodiments may have different values. It should be noted that similar reference numerals and letters represent similar items in the following drawings, so that once a certain item is defined in an accompanying drawing, it does not need to be further discussed in subsequent drawings.

[0070] It should also be noted that "one embodiment", "another embodiment", "embodiment", etc. mentioned in this specification refer to the specific features, structures or characteristics described in conjunction with the embodiment included in at least one embodiment generally described in this application. The same expression appearing in multiple places in the specification does not necessarily refer to the same embodiment. Further, when a specific feature, structure or characteristic is described in conjunction with any embodiment, it is claimed that the realization of such feature, structure or characteristic in conjunction with other embodiments also falls within the scope of this application.

[0071] In the above embodiments, the description of each embodiment has its own emphasis. For parts that are not described in detail in a certain embodiment, reference can be made to the relevant descriptions of other embodiments.

[0072] It should also be noted that the above are only preferred embodiments of the present application, and the patent protection scope of the present application is not limited thereto. Any equivalent structure or equivalent process transformation made using the contents of the present application specification and drawings, or directly or indirectly used in other related technical fields, are also included in the patent protection scope of the present application.

Claims

1. A planar waveguide horn, characterized in that: include: A rectangular housing (1), the rectangular housing (1) being provided with an inlet and an outlet, and a receiving chamber (11) located between the inlet and the outlet; A waveguide structure (2), wherein the waveguide structure (2) is located in the accommodating cavity (11); The waveguide structure (2) comprises a plurality of arc-shaped channel baffles and an arc-shaped phase plate (21), wherein the plurality of arc-shaped channel baffles form a plurality of channels from the inlet to the outlet, and an arc-shaped phase plate (21) is located in a channel to divide the sound in the channel.

2. The planar waveguide horn according to claim 1, characterized in that: There are two waveguide structures (2), one waveguide structure (2) corresponds to one inlet, and the two waveguide structures (2) are symmetrically located on both sides of the accommodating cavity (11).

3. The planar waveguide horn according to claim 1, characterized in that: The plurality of arc-shaped channel baffles include: Two symmetrical first arc-shaped channel partitions (22); Two symmetrical second arc-shaped channel partitions (23); Two symmetrical third arc-shaped channel partitions (24); Wherein, the two first arc-shaped channel partitions (22) form a closed structure and are located in the middle of the plurality of arc-shaped channel partitions; The first arc-shaped channel partition plate (22) and the second arc-shaped channel partition plate (23) located on the same side are arranged with a spacing therebetween to form a first channel (25); The second arc-shaped channel partition plate (23) and the third arc-shaped channel partition plate (24) located on the same side are arranged with an interval therebetween to form a second channel (26).

4. The planar waveguide horn according to claim 1, characterized in that: The arc-shaped channel partition is a curved plate composed of one or more arcs.

5. The planar waveguide horn according to claim 1, characterized in that: The arc-shaped phase plate (21) extends from the outlet toward the inside of the corresponding channel; Wherein, the length of the arc-shaped phase plate (21) is between 1 / 2 and 2 / 3 of the length of the corresponding channel.

6. The planar waveguide horn according to claim 1, characterized in that: The outlet is a grid sound outlet (27).

7. The planar waveguide horn according to claim 1, characterized in that: The inlet is a circular sound inlet (28).

8. The planar waveguide horn according to claim 1, characterized in that: The rectangular housing (1) is a rectangular flat structure.

9. The planar waveguide horn according to any one of claims 1 to 8, characterized in that: Also includes a diffusion portion (3); The diffuser (3) is located at the outlet.

10. The planar waveguide horn according to claim 9, characterized in that: The diffusion part (3) is a fan-shaped sound wave diffusion plate.

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