Medium-high frequency composite waveguide horn device and sound box

Abstract

The present application belongs to the field of sound technology, and particularly relates to a middle-high frequency composite waveguide horn device, which comprises a high frequency composite waveguide mechanism and middle frequency compression waveguide mechanisms symmetrically arranged on both sides of the high frequency composite waveguide mechanism; the high frequency composite waveguide mechanism comprises a sound amplification waveguide and a high pitch horn; at least two sound amplification cavities are arranged through the sound amplification waveguide, the two ends of the sound amplification cavities form sound outlets and sound inlets at the front end and the rear end of the sound amplification waveguide respectively, and the sound amplification cavities gradually increase from one end of the sound inlet to one end of the sound outlet; one high pitch horn is arranged on the sound inlet of each sound amplification cavity; the middle frequency compression waveguide mechanism comprises a compression waveguide and a middle pitch horn; at least one sound wave compression channel is arranged through the compression waveguide, the two ends of the sound wave compression channel form a guide outlet and a guide inlet at the front end and the rear end of the compression waveguide respectively, and the width of the sound wave compression channel decreases from one end of the guide inlet to one end of the guide inlet; the guide inlet is provided with the middle pitch horn; the two sound outlets and the two guide outlets are all directed to the same direction.

Description

Technical Field

[0001] The present invention belongs to the field of audio technology, and in particular relates to a mid-high frequency composite waveguide horn device and a speaker. Background Art

[0002] A horn is a specifically shaped channel installed in front of a speaker. It can compress and amplify sound waves, as well as constrain and alter their propagation direction. In the audio industry, some tweeters use a waveguide and horn combination, while others rely solely on a horn. Waveguide tweeter speakers, when used alone, often need to be paired with midrange speakers. Existing horn speakers, due to the limitations of the conventional horn-shaped waveguide structure and electroacoustic design principles, have difficulty achieving further improvements in high power and treble directivity, hindering the ability to achieve long-range, high sound pressure, and low distortion. Summary of the Invention

[0003] The purpose of the present invention is to provide a mid-to-high frequency composite waveguide horn device, which aims to solve the technical problem that speakers in the prior art are difficult to further improve in terms of high power and treble directivity due to the limitations of the conventional horn-shaped structure of the waveguide and the electroacoustic design principles, and cannot achieve long-range, high sound pressure and low distortion effects.

[0004] To achieve the above objectives, the embodiments of the present invention provide a medium- and high-frequency composite waveguide horn device, a high-frequency composite waveguide mechanism, and medium-frequency compression waveguide mechanisms symmetrically arranged on both sides of the high-frequency composite waveguide mechanism;

[0005] The high-frequency composite waveguide mechanism includes a sound amplification waveguide and a tweeter; the sound amplification waveguide is provided with at least two sound amplification cavities, and the two ends of the sound amplification cavity form a sound outlet and a sound inlet at the front end and the rear end of the sound amplification waveguide respectively, and the sound amplification cavity gradually increases from one end of the sound inlet to one end of the sound outlet; the sound inlet of each of the two sound amplification cavities is equipped with a tweeter;

[0006] The intermediate frequency compression waveguide mechanism includes a compression waveguide and a midrange speaker; the compression waveguide is provided with at least one sound wave compression channel, and the two ends of the sound wave compression channel form an outlet and an inlet at the front end and the rear end of the compression waveguide respectively, and the width of the sound wave compression channel decreases from one end of the inlet to the other end of the outlet; the midrange speaker is installed in the inlet;

[0007] The two compression waveguides are symmetrically installed on both sides of the sound amplification waveguide, and the two sound outlets and the two guide outlets are all facing the same direction.

[0008] Optionally, a partition group is provided in the sound amplification cavity, and the partition group divides the sound amplification cavity into a plurality of sub-channels.

[0009] Optionally, the partition group sequentially provides the sound expansion cavity with a first bifurcation position, a second bifurcation position and a third bifurcation position from the sound inlet to the sound outlet; the partition group includes one first baffle, two second baffles, three third baffles and two fourth baffles; the first baffle is provided in the middle of the sound expansion cavity, and the first baffle extends to the sound inlet to the first bifurcation position; the second baffle extends from the first bifurcation position to the sound outlet, and the second baffle divides the sound expansion cavity from the first bifurcation position to the sound outlet into three cavities; the three third baffles are respectively provided in the three cavities, and the third baffle extends from the second bifurcation position to the sound outlet; the two fourth baffles are provided in one of the cavities located in the middle of the sound expansion cavity, and the two fourth baffles are provided on both sides of one of the third baffles located in the middle of the sound expansion cavity, and the fourth baffle extends from the third bifurcation position to the sound outlet.

[0010] Optionally, the two sound amplification cavities are symmetrically arranged in the sound amplification waveguide, and the sound outlets of the two sound amplification cavities are arranged side by side.

[0011] Optionally, the sound amplification cavity is a curved sound amplification cavity, and the sound inlets of the two sound amplification cavities are curved in directions away from each other.

[0012] Optionally, the intermediate frequency compression waveguide mechanism further includes an equalizer; the equalizer is installed in the sound wave compression channel and close to the diaphragm of the mid-range speaker.

[0013] Optionally, the equalizer includes a diffusion head; the outer ring of the diffusion head is provided with at least one diffusion ring, and the outer ring of the diffusion ring is provided with a connecting ring; the diffusion head and the diffusion ring, as well as the diffusion ring and the connecting ring are connected by multiple connecting blocks, and there is a diffusion channel between the diffusion head and the diffusion ring, as well as between the diffusion ring and the connecting ring, the diffusion inlet of the diffusion channel faces the diaphragm of the speaker, and the diffusion outlet of the diffusion channel faces the sound wave compression channel.

[0014] Optionally, the width of the diffusion head decreases from an end close to the horn to an end away from the horn to form a conical diffusion head, and the width of the diffusion channel increases from an end close to the horn to an end away from the horn.

[0015] Optionally, a spherical groove is formed at one end of the diffuser head and the diffuser ring close to the diaphragm of the speaker, and the diaphragm protrudes into the spherical groove to form a spherical diaphragm. The spherical diaphragm and the spherical groove are arranged correspondingly and a resonance cavity is formed between them.

[0016] A speaker comprises a cabinet and the above-mentioned mid-high frequency composite waveguide horn device; a mounting cavity is provided in the cabinet, and an outwardly enlarged horn channel is provided on the outer wall of the cabinet, the narrow end of the horn channel being connected to the mounting cavity; the mid-high frequency composite waveguide horn device is installed in the mounting cavity, and the sound outlet and the two guide outlets are both close to the narrow end and facing the wide end of the horn channel.

[0017] Compared with the prior art, the above one or more technical solutions in the medium and high frequency composite waveguide horn device provided by the embodiment of the present invention have at least one of the following technical effects:

[0018] The high-frequency sound waves emitted by the two tweeters are transmitted along the two sound amplification cavities respectively, and the high-frequency sound waves are amplified in the process of transmission from the narrower end to the wider end of the sound amplification cavity. The two groups of high-frequency sound waves are transmitted to the sound outlet and coupled and superimposed to form high-power and high-sound-pressure tweeters. At the same time, the intermediate-frequency sound waves emitted by the two mid-range speakers are transmitted along the two sound wave compression channels respectively. The intermediate-frequency sound waves are compressed in the process of transmission from the wider end to the narrower end of the sound wave compression channel. The two groups of intermediate-frequency sound waves are transmitted to the outlet and coupled and superimposed to form high-power and low-distortion mid-range. Finally, the two groups of tweeters are coupled and superimposed with the two groups of mid-range and diffused out to obtain a high-power, high-sound-pressure and low-distortion sound. The sound not only has a high sound pressure but also has a long propagation range.

[0019] In addition, the two sound outlets and the two guide outlets can be connected to horns, and the two groups of high-pitched sounds are coupled and superimposed with the two groups of mid-range sounds and diffused through the horns, which can effectively control the directionality of the sound, and the sound coverage is wide, uniform, and stable. There is no sound interference within a limited frequency range, and clear, realistic, layered, and three-dimensional sound is transmitted. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, 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 work.

[0021] Figure 1 It is a schematic structural diagram of the medium and high frequency composite waveguide horn device of the present invention.

[0022] Figure 2 It is a structural schematic diagram of the high-frequency composite waveguide mechanism of the present invention.

[0023] Figure 3 It is a cross-sectional view of the high-frequency composite waveguide structure of the present invention.

[0024] Figure 4It is a structural schematic diagram of the intermediate frequency compression waveguide mechanism of the present invention.

[0025] Figure 5 It is a cross-sectional view of the intermediate frequency compression waveguide mechanism of the present invention.

[0026] Figure 6 Schematic diagram of the structure of the compression waveguide of the present invention.

[0027] Figure 7 Another perspective view of the compression waveguide of the present invention.

[0028] Figure 8 For the present invention Figure 3 Cross-sectional view along the mid-DD line.

[0029] Figure 9 For the present invention Figure 4 Cross-sectional view along line EE.

[0030] Figure 10 Schematic diagram of the structure of the equalizer of the present invention.

[0031] Figure 11 2 is a cross-sectional view of the equalizer of the present invention.

[0032] Figure 12 It is a structural schematic diagram of the speaker of the present invention.

[0033] Among them, the reference numerals in the figures are:

[0034] 100, high-frequency composite waveguide structure; 110, sound amplification waveguide; 111, sound amplification cavity; 112, sound outlet; 112a, fourth mounting platform; 112b, fourth mounting hole; 113, sound inlet; 113a, circular mounting platform; 114, sub-channel; 150, tweeter; 160, baffle assembly; 161, first baffle; 162, second baffle; 163, third baffle; 164, fourth baffle; X, first bifurcation; Y, second bifurcation; Z, third bifurcation; 170, horn waveguide mounting plate; 171, acoustic wave coupling port;

[0035] 200, IF compression waveguide mechanism; 210, compression waveguide; 211, sound wave compression channel; 212, lead-out port; 212a, third mounting platform; 212b, third mounting hole; 213, lead-in port; 214, second mounting platform; 215, connecting hole; 250, midrange speaker; 251, diaphragm; 252, first mounting platform; 260, equalizer; 261, diffuser; 262, diffuser ring; 263, connecting ring; 264, connecting block; 265, diffuser channel; 266, spherical groove; 267, resonance cavity; 270, mounting bracket; 271, air-avoidance hole;

[0036] 300, speaker; 310, cabinet; 320, horn channel; 321, narrow mouth. DETAILED DESCRIPTION

[0037] The following describes embodiments of the present invention in detail, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the embodiments of the present invention, and should not be construed as limiting the present invention.

[0038] In the description of the embodiments of the present invention, it should be understood that the terms "length", "width", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing the embodiments of the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention.

[0039] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be understood to indicate or imply relative importance or implicitly specify the number of the technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of the embodiments of the present invention, "plurality" means two or more, unless otherwise specifically defined.

[0040] In the embodiments of the present invention, unless otherwise expressly specified or limited, the terms "installed," "connected," "connected," "fixed," etc. should be understood in a broad sense. For example, they may refer to fixed connection, detachable connection, or integration; mechanical connection or electrical connection; direct connection or indirect connection through an intermediate medium; internal communication between two components or interaction between two components. Those skilled in the art will understand the specific meanings of the above terms in the embodiments of the present invention based on specific circumstances.

[0041] In one embodiment of the present invention, referring to Figures 1-11 , provides a medium-high frequency composite waveguide horn device, including a high-frequency composite waveguide mechanism 100, and a medium-frequency compression waveguide mechanism 200 symmetrically arranged on both sides of the high-frequency composite waveguide mechanism 100.

[0042] Among them, reference Figure 2 and Figure 3The high-frequency composite waveguide structure 100 includes a sound amplification waveguide 110 and a tweeter 150. The sound amplification waveguide 110 is provided with at least two sound amplification cavities 111. The two ends of the sound amplification cavity 111 form a sound outlet 112 and a sound inlet 113 at the front and rear ends of the sound amplification waveguide 110, respectively. The sound amplification cavity 111 gradually increases in size from one end of the sound inlet 113 to the other end of the sound outlet 112. The sound inlet 113 of each of the two sound amplification cavities 111 is equipped with a tweeter 150.

[0043] Among them, reference Figure 4 、 Figure 5 and Figure 8 The mid-frequency compression waveguide mechanism 200 includes a compression waveguide 210 and a midrange speaker 250. The compression waveguide 210 is provided with at least one acoustic wave compression channel 211. Each acoustic wave compression channel 211 forms an outlet 212 and an inlet 213 at the front and rear ends of the compression waveguide 210, respectively. The width A of the acoustic wave compression channel 211 decreases from one end of the inlet 213 toward the other end of the outlet 212. The midrange speaker 250 is mounted in the inlet 213.

[0044] The two compression waveguides 210 are symmetrically installed on both sides of the sound amplification waveguide 110 , and the two sound outlets 112 and the two guide outlets 212 are all facing the same direction.

[0045] Specifically, refer to Figure 1 、 Figure 3 and Figure 5 The high-frequency sound waves emitted simultaneously by the two tweeters 150 are respectively transmitted along the two sound amplification cavities 111, and the high-frequency sound waves are amplified in the process of being transmitted from the narrower end to the wider end of the sound amplification cavity 111. The two groups of high-frequency sound waves are transmitted to the sound outlet 112 and coupled and superimposed to form high-power and high-sound-pressure tweeters. At the same time, the intermediate-frequency sound waves emitted by the two mid-range speakers 250 are respectively transmitted along the two sound wave compression channels 211, and the intermediate-frequency sound waves are compressed in the process of being transmitted from the wider end to the narrower end of the sound wave compression channel 211. The two groups of intermediate-frequency sound waves are transmitted to the outlet 212 and coupled and superimposed to form high-power and low-distortion mid-range sounds. Finally, the two groups of tweeters are coupled and superimposed with the two groups of mid-range sounds and diffused out to obtain a high-power, high-sound-pressure and low-distortion sound, which not only has a high sound pressure but also has a long propagation range.

[0046] In addition, the two sound outlets 112 and the two guide outlets 212 can be connected to the horn, and the two groups of high-frequency sounds are coupled and superimposed with the two groups of mid-range sounds and diffused through the horn, which can effectively control the directionality of the sound. The polar coordinate diagram of the directivity and the column wave number control are consistent, there are no side lobes, and the sound coverage is wide, the sound coverage is uniform, the stability is good, and there is no sound interference within a limited frequency range, and a clear, realistic, layered and three-dimensional sound is transmitted.

[0047] In another embodiment of the present invention, referring to Figure 2 and Figure 3 Each of the amplifying cavities 111 is provided with a baffle assembly 160, which divides the amplifying cavity 111 into a plurality of sub-channels 114. The high-frequency sound waves emitted by the tweeter 150 are transmitted and amplified along the sub-channels 114, effectively reducing the whole-wave ratio of the radiated high-frequency sound waves and significantly reducing phase distortion, thereby achieving low-distortion and high-sound-pressure high-frequency sound.

[0048] Further, refer to Figure 2 and Figure 3 The partition plate group 160 sequentially defines a first bifurcation position X, a second bifurcation position Y, and a third bifurcation position Z in the sound amplification cavity 111 from the sound inlet 113 to the sound outlet 112. The partition plate group 160 includes a first partition plate 161, two second partition plates 162, three third partition plates 163, and two fourth partition plates 164.

[0049] Among them, reference Figure 2 and Figure 3 The first partition 161 is arranged in the middle of the sound expansion cavity 111. The first partition 161 extends from the sound inlet 113 to the first bifurcation position X. The first partition 161 divides the sound expansion cavity 111 from the sound inlet 113 to the first bifurcation position X into two parts.

[0050] Among them, reference Figure 2 and Figure 3 The second partition 162 extends from the first bifurcation position X to the sound outlet 112 , and the second partition 162 divides the sound expansion cavity 111 from the first bifurcation position X to the sound outlet 112 into three cavities.

[0051] Among them, reference Figure 2 and Figure 3 The three third partitions 163 are respectively arranged in the three cavities, and the third partitions 163 extend from the second bifurcation position Y to the sound outlet 112. The two second partitions 162 and the three third partitions 163 divide the sound expansion cavity 111 from the second bifurcation position Y to the sound outlet 112 into six parts.

[0052] Among them, reference Figure 2 and Figure 3The two fourth partitions 164 are arranged in the cavity located in the middle of the sound expansion cavity 111, and the two fourth partitions 164 are arranged on both sides of the third partition 163 located in the middle of the sound expansion cavity 111. The fourth partition 164 extends from the third bifurcation position Z to the sound outlet 112. The two second partitions 162, three third partitions 163 and two fourth partitions 164 divide the sound expansion cavity 111 from the third bifurcation position Z to the sound outlet 112 into eight parts to form an eight-part channel 114, and the lengths of the eight-part channel 114 are basically close.

[0053] Specifically, refer to Figure 2 and Figure 3 The high-frequency sound waves emitted by the tweeter 150 are transmitted from the sound inlet 113 to the sound outlet 112 along the eight sub-channels 114. Due to the long lengths and narrow widths and heights of the sub-channels 114, the high-frequency sound waves are diffusely enhanced and amplified within the sub-channels 114 using narrow-slit transmission technology. This effectively controls the directionality of the sound and enhances the sound pressure of the high-frequency sound waves, increasing the volume and propagation range. Furthermore, the eight sub-channels 114 are substantially similar in length, and the high-frequency sound waves from each sub-channel 114 propagate at approximately equal distances, resulting in a uniform distribution of the high-frequency sound waves within the coverage area. This effectively reduces the whole-wave ratio of the radiated sound waves, significantly reducing phase distortion and achieving low-distortion, high-sound-pressure treble.

[0054] Further, refer to Figure 2 and Figure 3 The first baffle 161, the second baffle 162, the third baffle 163 and the fourth baffle 164 all have a structure with small ends and a large middle, and the sides of the first baffle 161, the second baffle 162, the third baffle 163 and the fourth baffle 164 from the sound inlet 113 to the sound outlet 112 are curved or arc-shaped, so that the branch channel 114 is curved or arc-shaped and the length of the branch channel 114 is increased. In the process of high-frequency sound waves being transmitted from the sound inlet 113 to the sound outlet 112 along the eight branch channels 114, the high-frequency sound waves are diffused and enhanced to achieve a better amplification effect, thereby obtaining high-pitched sounds with higher sound pressure.

[0055] In another embodiment of the present invention, referring to Figure 2 and Figure 3 The two sound amplification cavities 111 are symmetrically arranged in the sound amplification waveguide 110, and the sound outlets 112 of the two sound amplification cavities 111 are arranged side by side, which is conducive to the two groups of high-frequency sound waves being transmitted along the sound amplification cavities 111 to the sound outlets 112 for coupling and superposition, thereby forming high-power and high-sound-pressure high-frequency sounds.

[0056] Further, refer to Figure 2 and Figure 3The sound amplification cavity 111 is a curved sound amplification cavity 111, so that the branch channel 114 is arc-shaped, and the sound inlets 113 of the two sound amplification cavities 111 are bent in a direction away from each other, so that the distance between the two sound inlets 113 is increased, providing a larger installation space for the two tweeters 150 to be installed in the two sound inlets 113 respectively. Therefore, a tweeter 150 with larger size and power can be installed to provide high-power high-frequency sound waves.

[0057] Further, refer to Figure 2 and Figure 3 The sound inlet 113 is circular, the sound outlet 112 is a narrow rectangular, a circular mounting platform 113a is extended from the edge of the sound inlet 113, and the tweeter 150 is screwed to the circular mounting platform 113a, so that the tweeter 150 is installed at the sound inlet 113, and the structure is simple.

[0058] In another embodiment of the present invention, referring to Figure 5 、 Figure 10 and Figure 11 The mid-frequency compression waveguide mechanism 200 also includes an equalizer 260. The equalizer 260 is installed within the sound wave compression channel 211 and near the diaphragm 251 of the mid-range speaker 250. The equalizer 260, also known as an equalizer, is used to correct for sound frequency distortion caused by the vibration of the diaphragm in a loudspeaker (speaker), thereby improving sound clarity and quality. The equalizer 260 faces the center of the sound-emitting end of the mid-range speaker 250. The mid-frequency sound waves vibrating from the diaphragm 251 of the mid-range speaker 250 pass through the equalizer 260, improving the clarity and quality of the mid-frequency sound waves.

[0059] Further, refer to Figure 5 、 Figure 10 and Figure 11 The equalizer 260 includes a diffuser head 261. The diffuser head 261 is provided with at least one diffuser ring 262 on its outer ring, and the diffuser ring 262 is provided with a connecting ring 263 on its outer ring. The outer wall of the diffuser head 261 is connected to the inner wall of the diffuser ring 262, and the outer wall of the diffuser ring 262 is connected to the inner wall of the connecting ring 263, via a plurality of connecting blocks 264. The diffuser head 261, the diffuser ring 262, and the connecting ring 263 are sequentially connected by the plurality of connecting blocks 264, giving the equalizer 260 a roughly flower-shaped, stable structure.

[0060] Among them, reference Figure 5 、 Figure 10 and Figure 11There are one or more diffusion channels 265 between the diffusion head 261 and the diffusion ring 262 and between the diffusion ring 262 and the connecting ring 263. The diffusion inlet of the diffusion channel 265 is toward the diaphragm 251 of the mid-range speaker 250, and the diffusion outlet of the diffusion channel 265 is toward the sound wave compression channel 211.

[0061] Specifically, refer to Figure 5 、 Figure 10 and Figure 11 The intermediate-frequency sound waves generated by the vibration of the diaphragm 251 of the midrange speaker 250 enter the diffusion channel 265 through the diffusion inlet of the equalizer 260. The intermediate-frequency sound waves are transmitted along the diffusion channel 265 and enhanced by diffusion. Then, they are transmitted from the diffusion outlet into the sound wave compression channel 211, thereby improving the quality of the intermediate-frequency sound waves. Compared with ordinary speakers, the midrange speaker 250 equipped with the equalizer 260200 has an overall db value of the midrange increased by more than 5%, and the sound quality of the midrange is clearer, more delicate and more penetrating.

[0062] In other embodiments, reference Figure 5 、 Figure 10 and Figure 11 The diffuser head 261 is surrounded by two diffuser rings 262, which are connected by a plurality of connecting blocks 264. One or more diffuser channels 265 are also provided between the two diffuser rings 262. The outer wall of the outermost diffuser ring 262 is connected to the inner wall of the connecting ring 263 via a plurality of connecting blocks 264.

[0063] Further, refer to Figure 5 、 Figure 10 and Figure 11 The width of the diffuser head 261 decreases from the end closest to the midrange speaker 250 to the end further away from the midrange speaker 250, forming a conical diffuser head 261. The width B of the diffuser channel 265 increases from the end closest to the midrange speaker 250 to the end further away from the midrange speaker 250, forming a diffuse diffuser channel 265. Specifically, the intermediate-frequency sound waves generated by the vibration of the diaphragm 251 are diffused and enhanced from the narrower end of the diffuser channel 265 to the wider end, and then diffused into the sound wave compression channel 211. This allows the intermediate-frequency sound waves to be evenly transmitted into the sound wave compression channel 211, thereby improving the stability and sensitivity of the sound wave transmission.

[0064] Further, refer to Figure 5 、 Figure 10 and Figure 11The diffuser head 261 and the diffuser ring 262 are each provided with a spherical groove 266 at one end near the diaphragm 251 of the midrange speaker 250. The diaphragm 251 protrudes into the spherical groove 266 to form a spherical diaphragm 251. The spherical diaphragm 251 and the spherical groove 266 are correspondingly disposed, with a resonance cavity 267 formed therebetween. Specifically, when the diaphragm 251 of the midrange speaker 250 vibrates, the spherical diaphragm 251 and the spherical groove 266 cooperate to easily cause the resonance cavity 267 to resonate, thereby enhancing the sound field of the resonance cavity 267 and thereby strengthening the sound waves generated by the vibration of the diaphragm 251, thereby enhancing the sound waves.

[0065] In another embodiment of the present invention, referring to Figure 5-Figure 9 , the height C of the sound wave compression channel 211 decreases from one end of the introduction port 213 to the other end of the introduction port 213. In other embodiments, the height C of the sound wave compression channel 211310 first decreases and then increases from one end of the introduction port 213 to the other end of the introduction port 213. Therefore, the setting of the height C of the sound wave compression channel 211 is not limited in this embodiment.

[0066] Further, refer to Figure 5-Figure 9 The sound wave compression channel 211 is a curved channel. By setting the sound wave compression channel 211 as a curved channel, when the intermediate frequency sound wave is conducted along the curved direction of the curved channel, compared with the straight-through sound wave compression channel 211, the curved channel can change the direction of the intermediate frequency sound wave, so that the intermediate frequency sound wave is diffusely enhanced without quickly passing through the curved channel, so that the curved channel can better compress the intermediate frequency sound wave, and the compression effect of the intermediate frequency sound wave is good.

[0067] In another embodiment of the present invention, referring to Figure 5-Figure 9 The midrange speaker 250 is provided with a first mounting platform 252 around its diaphragm 251, a connecting ring 263 is provided on the periphery of the equalizer 260, and a second mounting platform 214 extends outward from the edge of the inlet 213. The first mounting platform 252, the connecting ring 263 and the second mounting platform 214 are sequentially connected by screwing, thereby fixing the midrange speaker 250, the equalizer 260 and the compression waveguide 210 together.

[0068] Specifically, refer to Figure 5-Figure 9A plurality of coaxially arranged connection holes 215 are formed through the first mounting platform 252, the connection ring 263, and the second mounting platform 214. The screw rod of a screw (not shown) passes through the connection hole 215 and cooperates with a nut (not shown) to fix and clamp the first mounting platform 252, the connection ring 263, and the second mounting platform 214 between the nut and the screw cap, thereby fixing the speaker, the equalizer 260, and the compression waveguide 210 together, making installation convenient.

[0069] Further, refer to Figure 5-Figure 9 The intermediate-frequency compression waveguide mechanism 200 also includes a mounting bracket 270. The connecting ring 263 and the second mounting platform 214 are fixedly mounted on opposite sides of the mounting bracket 270. The mounting bracket 270 is provided with a clearance hole 271 for clearing the equalizer 260. By fixing the speaker, the equalizer 260, and the compression waveguide 210 to the mounting bracket 270, and then fixing the mounting bracket 270 within the cabinet 310 of the speaker 300 (not shown), the intermediate-frequency compression waveguide mechanism 200 is fixedly mounted within the cabinet 310 of the speaker 300.

[0070] In another embodiment of the present invention, referring to Figure 5-Figure 9 The inlet 213 is circular. Since the diaphragm 251 of the midrange speaker 250 is circular, the circular inlet 213 can correspond to the diaphragm 251 of the midrange speaker 250, and the structure is compact. The outlet 212 is rectangular.

[0071] Further, refer to Figure 1 、 Figure 2 and Figure 4 The mid- and high-frequency composite waveguide horn device also includes a horn waveguide mounting plate 170, which is provided with an acoustic coupling port 171. Third mounting platforms 212a extend outward from the edges of the outlets 212 of the two compression waveguides 210. These third mounting platforms 212a are provided with a plurality of third mounting holes 212b. Fourth mounting platforms 112a extend outward from the opposing edges of the two sound outlets 112. These fourth mounting platforms 112a are provided with a plurality of fourth mounting holes 112b. The two guide outlets 212 are respectively located on opposite sides of the two sound outlets 112 and are close to the two sound outlets 112. The two guide outlets 212 and the two sound outlets 112 are directly opposite the sound wave coupling port 171. The third mounting hole 212b and the fourth mounting hole 112b are both connected to the horn waveguide mounting plate 170 with screw threads, so that the high-frequency composite waveguide mechanism 100 and the two intermediate-frequency compression waveguide mechanisms 200 are fixedly mounted on the horn waveguide mounting plate 170 to form a combination.

[0072] In another embodiment of the present invention, referring to Figures 1-12 , also provides a speaker 300, including a box body 310 and the above-mentioned mid-high frequency composite waveguide horn device.

[0073] Among them, reference Figures 1-12 The housing 310 is provided with a mounting cavity. The outer wall of the housing 310 is provided with an outwardly enlarged horn channel 320. The narrow opening 321 of the horn channel 320 communicates with the mounting cavity. The mid- and high-frequency composite waveguide horn device is installed within the mounting cavity, with the two sound outlets 112 and the two guide outlets 212 both proximate the narrow opening 321 and facing the wide end of the horn channel 320. The two sets of high frequencies and the two sets of mid frequencies are coupled and superimposed, then diffused through the horn channel 320, effectively controlling the directionality of the sound. This provides wide and uniform sound coverage with good stability.

[0074] Further, refer to Figures 1-12 The housing 310 integrates a high-frequency composite waveguide mechanism 100 and two intermediate-frequency compression waveguide mechanisms 200, taking up minimal space and reducing the size of the housing 310 for portability. Furthermore, the high-frequency composite waveguide mechanism 100 produces dual highs, while the two intermediate-frequency compression waveguide mechanisms 200 produce dual mids. The dual highs and mids are coupled and superimposed without interference within a limited frequency range, delivering clear, realistic, layered, and three-dimensional sound.

[0075] Further, refer to Figures 1-12 The acoustic coupling port 171 of the horn waveguide mounting plate 170 faces the narrow opening 321 of the horn channel 320, and the horn waveguide mounting plate 170 is screwed to the inner wall of the box 310. The horn waveguide mounting plate 170 is fixedly connected to the narrow opening 321 of the horn channel 320, so that the two sound outlets 112 and the two guide outlets 212 face the narrow opening 321 of the horn channel 320. The upper and lower ends of the mounting brackets 270 of the two intermediate frequency compression waveguide mechanisms 200 are screwed to the inner wall of the box 310, thereby fixing the high-frequency composite waveguide mechanism 100 and the two intermediate frequency compression waveguide mechanisms 200 in the mounting cavity of the box 310, facilitating installation.

[0076] The rest of this embodiment is the same as that of the first embodiment. The features not explained in this embodiment are all based on the explanations of the first embodiment and will not be described in detail here.

[0077] The above is a further detailed description of the present invention in conjunction with specific preferred embodiments, and the specific implementation of the present invention should not be considered to be limited to these descriptions. For those skilled in the art of the present invention, without departing from the concept of the present invention, its architecture can be flexible and varied, and a series of products can be derived. Simply making a few simple deductions or substitutions should be considered to fall within the scope of patent protection of the present invention as determined by the submitted claims.

Claims

1. A medium and high frequency composite waveguide horn device, characterized in that: It includes a high-frequency composite waveguide mechanism and a medium-frequency compression waveguide mechanism symmetrically arranged on both sides of the high-frequency composite waveguide mechanism; The high-frequency composite waveguide mechanism includes a sound amplification waveguide and a tweeter; the sound amplification waveguide is provided with at least two sound amplification cavities, and the two ends of the sound amplification cavity form a sound outlet and a sound inlet at the front end and the rear end of the sound amplification waveguide respectively, and the sound amplification cavity gradually increases from one end of the sound inlet to one end of the sound outlet; the sound inlet of each of the two sound amplification cavities is equipped with a tweeter; The intermediate frequency compression waveguide mechanism includes a compression waveguide and a midrange speaker; the compression waveguide is provided with at least one sound wave compression channel, and the two ends of the sound wave compression channel form an outlet and an inlet at the front end and the rear end of the compression waveguide respectively, and the width of the sound wave compression channel decreases from one end of the inlet to the other end of the outlet; the midrange speaker is installed in the inlet; The two compression waveguides are symmetrically mounted on both sides of the sound amplification waveguide, and the two sound outlets and the two guide outlets are all facing the same direction; A partition plate group is provided in each of the sound amplification cavities, and the partition plate group divides the sound amplification cavity into a plurality of sub-channels; The partition plate group sequentially provides the sound expansion cavity with a first bifurcation position, a second bifurcation position and a third bifurcation position from the sound inlet to the sound outlet; the partition plate group includes a first baffle, two second baffles, three third baffles and two fourth baffles; the first baffle is arranged in the middle of the sound expansion cavity, and the first baffle extends to the sound inlet to the first bifurcation position; the second baffle extends from the first bifurcation position to the sound outlet, and the second baffle divides the sound expansion cavity from the first bifurcation position to the sound outlet into three cavities; the three third baffles are respectively arranged in the three cavities, and the third baffle extends from the second bifurcation position to the sound outlet; the two fourth baffles are arranged in the cavity located in the middle of the sound expansion cavity, and the two fourth baffles are arranged on both sides of the third baffle located in the middle of the sound expansion cavity, and the fourth baffle extends from the third bifurcation position to the sound outlet; The two sound amplification cavities are symmetrically arranged in the sound amplification waveguide, and the sound outlets of the two sound amplification cavities are arranged side by side.

2. The medium and high frequency composite waveguide horn device according to claim 1, characterized in that: The sound amplification cavity is a curved sound amplification cavity, and the sound inlets of the two sound amplification cavities are curved in directions away from each other.

3. The medium-high frequency composite waveguide horn device according to claim 1 or 2, characterized in that: The intermediate frequency compression waveguide mechanism further includes an equalizer; the equalizer is installed in the sound wave compression channel and close to the diaphragm of the midrange speaker.

4. The medium- and high-frequency composite waveguide horn device according to claim 3, characterized in that: The equalizer includes a diffusion head; the outer ring of the diffusion head is provided with at least one diffusion ring, and the outer ring of the diffusion ring is provided with a connecting ring; the diffusion head and the diffusion ring, as well as the diffusion ring and the connecting ring are connected by multiple connecting blocks, and there is a diffusion channel between the diffusion head and the diffusion ring, as well as between the diffusion ring and the connecting ring, the diffusion inlet of the diffusion channel faces the diaphragm of the midrange speaker, and the diffusion outlet of the diffusion channel faces the sound wave compression channel.

5. The medium-high frequency composite waveguide horn device according to claim 4, characterized in that: The width of the diffusion head decreases from the end close to the horn to the end away from the horn to form a conical diffusion head, and the width of the diffusion channel increases from the end close to the horn to the end away from the horn.

6. The medium- and high-frequency composite waveguide horn device according to claim 4, characterized in that: The diffuser head and the diffuser ring are provided with a spherical groove at one end close to the diaphragm of the speaker. The diaphragm protrudes into the spherical groove to form a spherical diaphragm. The spherical diaphragm and the spherical groove are arranged correspondingly and a resonance cavity is formed between them.

7. A speaker, characterized in that: It comprises a box body and a medium- and high-frequency composite waveguide horn device as described in any one of claims 1 to 6; a mounting cavity is provided in the box body, and a horn channel which is enlarged outward on the outer wall of the box body, and the narrow end of the horn channel is connected to the mounting cavity; the medium- and high-frequency composite waveguide horn device is installed in the mounting cavity, and the sound outlet and the two guide outlets are close to the narrow mouth and face the wide end of the horn channel.

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