Sound production device and display device

Abstract

The utility model discloses a kind of sounding device and display device, it is related to sounding device technical field, wherein, sounding device includes shell, bass loudspeaker, passive radiator and reverse phase pipe.The first installation cavity is in shell, and shell is equipped with reverse phase hole, first sound hole and second sound hole, and first sound hole and second sound hole are all communicated with the first installation cavity.Bass loudspeaker is set corresponding first sound hole.Passive radiator is set corresponding second sound hole.Reverse phase pipe is located in the first installation cavity, and reverse phase pipe communicates reverse phase hole and the first installation cavity.Reverse phase pipe is consistent with the resonance frequency of passive radiator.In the bass loudspeaker work and emit sound, by setting reverse phase pipe and passive radiator as same resonance frequency, it can make the tuning wave crest of reverse phase pipe and passive radiator coincide, reduce the influence to the transient response of low frequency of sounding device, overallly guarantee the transient response of low frequency of sounding device.

Description

Technical Field

[0001] This utility model relates to the field of sound-generating devices, and in particular to a sound-generating device and a display device. Background Technology

[0002] Common sound-producing devices, such as speakers, often include woofers, midrange speakers, and tweeters as needed. They also often include bass reflex ports and passive radiators to extend the low-frequency response and optimize sound quality. However, installing both bass reflex ports and passive radiators on a sound-producing device can affect its low-frequency transient response and reduce its overall low-frequency response. Utility Model Content

[0003] The main purpose of this invention is to provide a sound-generating device and a display device, which aims to ensure the low-frequency response of the sound-generating device.

[0004] To achieve the above objectives, the sound-generating device proposed in this utility model includes:

[0005] The housing has a first mounting cavity inside, and the housing is provided with a phase inversion hole, a first sound transmission hole and a second sound transmission hole, both of which are connected to the first mounting cavity.

[0006] A subwoofer is disposed within the first mounting cavity, and the subwoofer is positioned corresponding to the first sound-permeable hole;

[0007] A passive radiator is disposed within the first mounting cavity, and the passive radiator is positioned corresponding to the second sound-transmitting hole; and...

[0008] A phase inverter tube is disposed in the first mounting cavity, and the phase inverter tube connects the phase inverter hole and the first mounting cavity;

[0009] The phase inverter has the same resonant frequency as the passive radiator.

[0010] In one embodiment, the cross-sectional area of ​​the bass reflex port is S1, the effective radiation area of ​​the woofer is Sd, and 0.1*Sd≤S1≤0.4*Sd.

[0011] In one embodiment, the length of the phase inverter is L, and

[0012]

[0013] Wherein, S1 is the cross-sectional area of ​​the phase inverter, c is the speed of sound, fs is the resonant frequency of the subwoofer, and Vb is the net volume of the first mounting cavity.

[0014] In one embodiment, the opening at the end of the bass reflex tube away from the bass reflex port faces the woofer.

[0015] In one embodiment, the phase inverter is arranged in a bent configuration.

[0016] In one embodiment, the second sound-transmitting hole is disposed between the phase-reversing hole and the first sound-transmitting hole; and / or,

[0017] The housing has a first side surface, and the phase inversion hole, the first sound-permeable hole and the second sound-permeable hole are all disposed on the first side surface.

[0018] In one embodiment, the housing has a second mounting cavity spaced apart from the first mounting cavity, wherein:

[0019] The housing is provided with a third sound-permeable hole, which communicates with the second mounting cavity. A mid-range speaker is provided in the second mounting cavity, and the mid-range speaker is positioned corresponding to the third sound-permeable hole; and / or

[0020] The housing is provided with a fourth sound-permeable hole, which is connected to the second mounting cavity. A tweeter is provided in the second mounting cavity, and the tweeter is positioned corresponding to the fourth sound-permeable hole.

[0021] In one embodiment, the housing has a second side surface, and the third and fourth sound-permeable holes are both located on the second side surface.

[0022] In one embodiment, the housing includes a first half-shell and a second half-shell. The first half-shell is provided with a first partition plate, and the second half-shell is provided with a second partition plate. The first partition plate and the second partition plate abut against each other and separate the inner cavity of the housing to form the first mounting cavity and the second mounting cavity.

[0023] This utility model also proposes a display device, including the aforementioned sound-emitting device.

[0024] In the technical solution of this utility model, when the subwoofer is working and emitting sound, both the bass reflex tube and the passive radiator can enhance the low-frequency response of the sound-emitting device. By setting the bass reflex tube and the passive radiator to the same resonant frequency, the tuning peaks of the bass reflex tube and the passive radiator can be made to coincide, reducing the impact on the low-frequency transient response of the sound-emitting device and ensuring the overall low-frequency transient response of the sound-emitting device. Attached Figure Description

[0025] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0026] Figure 1 A schematic diagram of the structure of an embodiment of the sound-generating device provided by this utility model;

[0027] Figure 2 for Figure 1 A schematic diagram of the sound-generating device from another perspective;

[0028] Figure 3 for Figure 1 A schematic diagram of the structure of the first shell in the middle;

[0029] Figure 4 for Figure 1 A schematic diagram of the structure of the second shell in the diagram.

[0030] Explanation of icon numbers:

[0031] 1. Housing; 11. First mounting cavity; 12. Bass reflex port; 13. First acoustic hole; 14. Second acoustic hole; 15. First side surface; 16. Second mounting cavity; 17. Third acoustic hole; 18. Fourth acoustic hole; 19. Second side surface; 2. Woofer; 3. Passive radiator; 4. Bass reflex tube; 5. Midrange speaker; 6. Tweeter; 7. First half-shell; 71. First partition plate; 72. First enclosure plate; 73. First tube groove; 74. Third enclosure plate; 8. Second half-shell; 81. Second partition plate; 82. Second enclosure plate; 83. Second tube groove; 84. Fourth enclosure plate.

[0032] The realization of the purpose, functional features and advantages of this utility model will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0033] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present utility model.

[0034] It should be noted that if the embodiments of this utility model involve directional indicators (such as up, down, left, right, front, back, etc.), the directional indicators are only used to explain the relative positional relationship and movement of the components in a specific posture. If the specific posture changes, the directional indicators will also change accordingly.

[0035] Furthermore, if the embodiments of this utility model involve descriptions such as "first" or "second," these descriptions are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, the use of "and / or" or "and / or" throughout the text includes three parallel solutions. For example, "A and / or B" includes solution A, solution B, or a solution where both A and B are satisfied simultaneously. Furthermore, the technical solutions of the various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or impossible to implement, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection claimed by this utility model.

[0036] Common sound-producing devices, such as speakers, often include woofers, midrange speakers, and tweeters as needed. They also often include bass reflex ports and passive radiators to extend the low-frequency response and optimize sound quality. However, installing both bass reflex ports and passive radiators on a sound-producing device can affect its low-frequency transient response and reduce its overall low-frequency response.

[0037] This utility model proposes a sound-generating device.

[0038] Please see Figure 1 , Figure 2 and Figure 3 In one embodiment of this utility model, the sound-generating device includes a housing 1, a woofer 2, a passive radiator 3, and a bass reflex port 4. The housing 1 has a first mounting cavity 11, and the housing 1 is provided with a bass reflex port 12, a first sound-permeable hole 13, and a second sound-permeable hole 14, both of which are connected to the first mounting cavity 11. The woofer 2 is disposed within the first mounting cavity 11, and is positioned corresponding to the first sound-permeable hole 13. The passive radiator 3 is disposed within the first mounting cavity 11, and is positioned corresponding to the second sound-permeable hole 14. The bass reflex port 4 is disposed within the first mounting cavity 11, and the bass reflex port 4 connects the bass reflex port 12 and the first mounting cavity 11. The resonant frequency of the bass reflex port 4 coincides with that of the passive radiator 3.

[0039] In the technical solution of this utility model, when the subwoofer 2 is working and emitting sound, both the bass reflex tube 4 and the passive radiator 3 can enhance the low-frequency response of the sound-emitting device. By setting the bass reflex tube 4 and the passive radiator 3 to the same resonant frequency, the tuning peaks of the bass reflex tube 4 and the passive radiator 3 can be made to coincide, reducing the impact on the low-frequency transient response of the sound-emitting device and ensuring the overall low-frequency transient response of the sound-emitting device.

[0040] The sound-generating device can be a speaker, tape recorder, radio, music player, or a sound-generating structural component in a device with sound playback function, and is not limited here. Specifically, the sound-generating device is a speaker. The frequency range of the woofer 2 is 20Hz-300Hz. The shape of the bass reflex tube 4 is not limited here and can be set as needed. The resonant frequencies of both the bass reflex tube 4 and the passive radiator 3 are lower than the resonant frequency of the speaker.

[0041] The number of subwoofers 2 can be one, two, or more, with each of the first sound-permeable holes 13 corresponding to a subwoofer 2. No limitation is made here; specifically, one subwoofer 2 is provided. The number of passive radiators 3 can be one, two, or more, with each of the second sound-permeable holes 14 corresponding to a passive radiator 3. No limitation is made here; specifically, one subwoofer 2 is provided. The subwoofer 2 and the passive radiator 3 can be fixed and installed using any existing method such as screws or glue, without limitation; specifically, the subwoofer 2 is fixed with screws.

[0042] The order of the subwoofer 2, the passive radiator 3, and the bass reflex tube 4 is not limited here. The arrangement is to ensure that when the subwoofer generator produces sound, the gas in the first mounting cavity 11 vibrates, and the gas in the first mounting cavity 11 drives the passive radiator 3 to resonate. This is not limited here.

[0043] When selecting the subwoofer 2, the subwoofer 2 can be selected based on the net volume of the first mounting cavity 11. The equivalent volume of the subwoofer 2 is consistent with the net volume of the first mounting cavity 11, and the resonant frequency of the first speaker is consistent with the target resonant frequency of the sound-generating device. The size of the passive radiator 3 is equal to the effective radiation area of ​​the subwoofer 2.

[0044] The cross-sectional area of ​​the bass reflex port 4 is S1, and the effective radiating area of ​​the subwoofer 2 is Sd, where 0.1*Sd≤S1≤0.4*Sd. Specifically, the cross-sectional area S1 of the bass reflex port 4 is one-fifth of the effective radiating area Sd of the subwoofer 2.

[0045] The length of the phase inverter 4 is L, and;

[0046] Wherein, S1 is the cross-sectional area of ​​the phase inverter 4, c is the speed of sound, fs is the resonant frequency of the subwoofer 2, and Vb is the net volume of the first mounting cavity 11.

[0047] Please see Figure 2 , Figure 3 and Figure 4 The phase inverter tube 4 is curved. By making the phase inverter tube 4 curved, the length of the phase inverter tube 4 can be increased without increasing the length, width and height of the first mounting cavity 11, so as to facilitate the installation of the phase inverter tube 4 as needed.

[0048] The opening at the end of the bass reflex tube 4 furthest from the bass reflex port 12 faces the woofer 2. This improves the response time of the bass reflex tube 4.

[0049] The second sound-permeable hole 14 is located between the phase inversion hole 12 and the first sound-permeable hole 13, providing space for the extension of the phase inversion tube 4. Specifically, the guide tube is bent and avoids the passive radiator 3.

[0050] The housing 1 has a first side surface 15, and the bass reflex port 12, the first sound-transmitting port 13, and the second sound-transmitting port 14 are all disposed on the first side surface 15. The bass emitted by the sound-generating device can be emitted from the first side surface 15. The first side surface 15 can be a plane or a curved surface, which is not limited here; specifically, the first side surface 15 is a plane.

[0051] The housing 1 has a second mounting cavity 16 spaced apart from the first mounting cavity 11. The housing 1 is provided with a third sound-permeable hole 17, which is connected to the second mounting cavity 16. A mid-range speaker 5 is provided in the second mounting cavity 16, and the mid-range speaker 5 is provided corresponding to the third sound-permeable hole 17.

[0052] When the midrange speaker 5 is activated, the sound emitted by the midrange speaker 5 can pass through the third sound-permeable hole 17. By spaced the first mounting cavity 11 and the second mounting cavity 16, the interference of the midrange speaker 5 on the bass reflex port 12 and the passive radiator 3 can be reduced.

[0053] The frequency range of the midrange speaker 5 is 200Hz-7000Hz. One, two, or more midrange speakers 5 may be provided, and this is not limited here; specifically, one midrange speaker 5 is provided.

[0054] The housing 1 has a second mounting cavity 16 spaced apart from the first mounting cavity 11. The housing 1 is provided with a fourth sound-permeable hole 18, which is connected to the second mounting cavity 16. The second mounting cavity 16 is provided with a tweeter 6, which is positioned corresponding to the fourth sound-permeable hole 18.

[0055] When the tweeter 6 is activated, the sound emitted by the tweeter 6 can pass through the fourth acoustic aperture 18. By spaced apart the first mounting cavity 11 and the second mounting cavity 16, the interference of the tweeter 6 on the bass reflex port 12 and the passive radiator 3 can be reduced.

[0056] The frequency range of the tweeter 6 is 4000Hz-20000Hz. One, two, or more tweeters 6 may be provided, and this is not limited here; specifically, one tweeter 6 is provided.

[0057] The housing 1 has a second side surface 19, and the third sound-permeable hole 17 and the fourth sound-permeable hole 18 are both provided on the second side surface 19.

[0058] The first side surface 15 and the second side surface 19 can be adjacent surfaces, opposite surfaces, or surfaces that are not adjacent to each other, and there is no limitation here; specifically, the first side surface 15 and the second side surface 19 are adjacent to each other, and the first side surface 15 and the second side surface 19 are perpendicular to each other.

[0059] Please see Figure 2 , Figure 3 and Figure 4 The housing 1 includes a first half-shell 7 and a second half-shell 8. The first half-shell 7 is provided with a first partition plate 71, and the second half-shell 8 is provided with a second partition plate 81. The first partition plate 71 and the second partition plate 81 abut against each other and separate the inner cavity of the housing 1 to form the first mounting cavity 11 and the second mounting cavity 16. By abutting against each other, the inner cavity of the housing 1 can be separated, and the first mounting cavity 11 and the second mounting cavity 16 are relatively separated.

[0060] The first half-shell 7 and the second half-shell 8 can be connected by screws or glue, which is not limited here; specifically, the first half-shell 7 and the second half-shell 8 are connected by screws. The first partition plate 71 and the second partition plate 81 extend in the same direction, and the first partition plate 71 and the second partition plate 81 can extend in a straight line or in a curved direction, which is not limited here; specifically, the first partition plate 71 and the second partition plate 81 are both curved plates to facilitate the shape of the first mounting cavity 11 and the second mounting cavity 16, and to set the bending curve of the first partition plate 71 and the second partition plate 81.

[0061] Please see Figure 2 , Figure 3 and Figure 4 The first half-shell 7 has a first surrounding plate 72, and the second half-shell 8 has a second surrounding plate 82. The first surrounding plate 72 and the second surrounding plate 82 are located on the side of the first half-shell 7 and the second half-shell 8 that are close to each other. The first surrounding plate 72 and the second surrounding plate 82 abut against each other to enclose and form an inner cavity of the shell 1. The first surrounding plate 72 is disposed around the first side surface 15; the second side surface 19 is partially disposed on the first surrounding plate 72 and the other part is disposed on the second surrounding plate 82.

[0062] The third sound-permeable hole 17 has a partial opening on the first enclosure 72 and a partial opening on the second enclosure 82. The fourth sound-permeable hole 18 has a partial opening on the first enclosure 72 and a partial opening on the second enclosure 82.

[0063] A first groove 73 is formed on the side of the first half-shell 7 near the second half-shell 8. One end of the first groove 73 is open, and the other end is sealed and corresponds to the phase inversion hole 12. A second groove 83 is formed on the side of the second half-shell 8 near the first half-shell 7. One end of the second groove 83 is open near the opening of the first groove 73, and the other end of the second groove 83 is sealed and corresponds to the phase inversion hole 12. The first groove 73 and the second groove 83 correspond to each other. After the first half-shell 7 and the second half-shell 8 are connected, the first groove 73 and the second groove 83 are spliced ​​together to form the phase inversion tube 4.

[0064] Please see Figure 2 , Figure 3 and Figure 4The first pipe groove 73 can be recessed into the first housing 1. Specifically, a third surrounding plate 74 protrudes from the first housing 1, and the third surrounding plate 74 surrounds the first pipe groove 73. The second pipe groove 83 can be recessed into the second housing 1. Specifically, a fourth surrounding plate 84 protrudes from the second housing 1, and the fourth surrounding plate 84 surrounds the second pipe groove 83. After the first half-shell 7 and the second half-shell 8 are connected, the third surrounding plate 74 and the fourth surrounding plate 84 abut against each other.

[0065] The third enclosure 74 and the first partition 71 partially overlap, and the fourth enclosure 84 and the second partition 81 partially overlap.

[0066] This utility model also proposes a display device, which includes a display device body and a sound-emitting device. The specific structure of the sound-emitting device is as described in the above embodiments. Since this display device adopts all the technical solutions of all the above embodiments, it has at least all the beneficial effects brought about by the technical solutions of the above embodiments, which will not be described in detail here.

[0067] The display device is a television, the sound-generating device is installed inside the motor, and the first side surface 15 of the sound-generating device faces the front of the display device, while the second side surface 19 of the sound-generating device faces the rear of the display device.

[0068] The above description is merely an exemplary embodiment of the present utility model and does not limit the patent scope of the present utility model. Any equivalent structural transformations made based on the technical concept of the present utility model and the contents of the present utility model specification and drawings, or direct / indirect applications in other related technical fields, are included within the patent protection scope of the present utility model.

Claims

1. A sound-generating device, characterized in that, include: The housing has a first mounting cavity inside, and the housing is provided with a phase inversion hole, a first sound transmission hole and a second sound transmission hole, both of which are connected to the first mounting cavity. A subwoofer is disposed within the first mounting cavity, and the subwoofer is positioned corresponding to the first sound-permeable hole; A passive radiator is disposed within the first mounting cavity, and the passive radiator is positioned corresponding to the second sound-transmitting hole; and... A phase inverter tube is disposed in the first mounting cavity, and the phase inverter tube connects the phase inverter hole and the first mounting cavity; The phase inverter has the same resonant frequency as the passive radiator.

2. The sound-generating device as described in claim 1, characterized in that, The cross-sectional area of ​​the bass reflex port is S1, and the effective radiation area of ​​the woofer is Sd, where 0.1*Sd≤S1≤0.4*Sd.

3. The sound-generating device as described in claim 1, characterized in that, The length of the phase inverter is L, and Wherein, S1 is the cross-sectional area of ​​the phase inverter, c is the speed of sound, fs is the resonant frequency of the subwoofer, and Vb is the net volume of the first mounting cavity.

4. The sound-generating device as described in claim 1, characterized in that, The opening at the end of the bass reflex tube away from the bass reflex port faces the woofer.

5. The sound-generating device as described in claim 1, characterized in that, The phase inverter is bent.

6. The sound-generating device as claimed in claim 1, characterized in that, The second sound-transmitting hole is disposed between the phase inversion hole and the first sound-transmitting hole; and / or, The housing has a first side surface, and the phase inversion hole, the first sound-permeable hole and the second sound-permeable hole are all disposed on the first side surface.

7. The sound-generating device as claimed in claim 1, characterized in that, The housing has a second mounting cavity spaced apart from the first mounting cavity, wherein: The housing is provided with a third sound-permeable hole, which communicates with the second mounting cavity. A mid-range speaker is provided in the second mounting cavity, and the mid-range speaker is positioned corresponding to the third sound-permeable hole; and / or The housing is provided with a fourth sound-permeable hole, which is connected to the second mounting cavity. A tweeter is provided in the second mounting cavity, and the tweeter is positioned corresponding to the fourth sound-permeable hole.

8. The sound-generating device as claimed in claim 7, characterized in that, The housing has a second side surface, and the third and fourth sound-permeable holes are both located on the second side surface.

9. The sound-generating device as described in claim 7, characterized in that, The housing includes a first half-shell and a second half-shell. The first half-shell is provided with a first partition plate, and the second half-shell is provided with a second partition plate. The first partition plate and the second partition plate abut against each other and separate the inner cavity of the housing to form the first mounting cavity and the second mounting cavity.

10. A display device, characterized in that, Includes the sound-generating device as described in any one of claims 1 to 9.

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