An external speaker over-ear headphone

Abstract

This invention discloses an external speaker over-ear headphone, belonging to the field of headphone technology. The external speaker over-ear headphone includes a housing and a speaker unit disposed within the housing. A main cavity is located at the front of the speaker unit, and a first reflector is located at the end of the resonant cavity away from the main cavity. A main sound outlet is located directly opposite the first reflector, and sound waves reflected by the first reflector are emitted from the main sound outlet in positive phase. A bass reflex cavity surrounds the speaker unit and extends away from the main cavity to form a detour section, the end of which is equipped with a noise-canceling component. By forming a resonant cavity, this invention generates a powerful sound wave at the main sound outlet during sound transmission, thereby enhancing the low-frequency energy of the sound wave and making the bass effect more pronounced. Furthermore, the sound emission direction, adjusted by the first reflector, is directly facing the ear canal, thus reducing sound leakage and focusing and directional sound transmission.

Description

Technical Field

[0001] This invention relates to the field of headphone technology, and more particularly to an external speaker over-ear headphone. Background Technology

[0002] Headphones are analog products. In the past decade or so, the electronics and communications industries have undergone tremendous changes, and headphone products have also been constantly updated. Using headphones to listen to music has become a way for people to relax and relieve stress during their leisure time. As a result, the sound quality and privacy of headphones have gradually become the focus of people's attention.

[0003] In existing technology, in-ear headphones can be inserted into the ear canal, forming a closed space within the ear. Sound travels directly to the ear canal, allowing for easy sound reproduction, especially in bass, while preventing sound leakage so that only the wearer can hear it. However, for open-back headphones, because they are not inserted into the ear canal, the bass effect is less pronounced, affecting the user experience. Furthermore, some open-back headphones suffer from significant sound leakage, making them audible not only to the wearer but also to others at normal social distances, failing to effectively protect the listener's privacy and reducing the overall user experience. Summary of the Invention

[0004] The purpose of this invention is to address the shortcomings of existing open-back headphones, such as poor bass performance and low privacy, by proposing an external speaker over-ear headphone.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] An external speaker over-ear headphone includes a housing and a speaker disposed within the housing. The front end of the speaker has a main cavity and a resonant cavity extending to one side along the main cavity. A first reflector is disposed at the end of the resonant cavity away from the main cavity, and a main sound outlet is provided opposite the first reflector. Sound waves reflected by the first reflector are emitted from the main sound outlet in positive phase. A bass reflex cavity extends along the side of the main cavity that intersects with the resonant cavity. The bass reflex cavity covers the speaker and extends to the side away from the main cavity to form a detour. A noise-canceling component is disposed at the end of the detour.

[0007] To reduce sound leakage, preferably, a second reflector is provided at the inflection point of the detour section, and an independent arc-shaped plate extending from the shell is provided directly opposite the second reflector. The silencing component and the sound generator are respectively provided on both sides of the arc-shaped plate.

[0008] To further enhance the clarity and intensity of the sound, the reflecting surfaces of both the first and second reflectors are concave spherical surfaces, the main sound outlet is located at the center of the concave spherical surface of the first reflector, and the end of the arc-shaped plate extends to the center of the concave spherical surface of the second reflector.

[0009] For effective noise reduction, preferably, the noise reduction component includes a first phase-inverting sound outlet and a second phase-inverting sound outlet arranged opposite to each other. Both the first phase-inverting sound outlet and the second phase-inverting sound outlet are located at the end of the detour section. The sound wave phase of the first phase-inverting sound outlet is the same as that of the main sound outlet, and the sound wave phase of the second phase-inverting sound outlet is opposite to that of the main sound outlet.

[0010] Furthermore, a mesh fabric is provided inside the first phase inversion sound outlet, the second phase inversion sound outlet, and the main sound outlet.

[0011] Furthermore, the mesh count of the mesh fabric is 200-300.

[0012] Preferably, the main sound outlet is a stepped hole, the mesh is disposed at the large end of the stepped hole, the small end of the stepped hole is filled with damping cotton, and the damping cotton is in contact with the mesh.

[0013] Furthermore, the cross-sectional area of ​​the main sound outlet is greater than or equal to the sum of the areas of the first phase-inverting sound outlet and the second phase-inverting sound outlet.

[0014] Preferably, the main sound outlet is crescent-shaped or semi-circular.

[0015] Preferably, the volume of the resonant cavity is two-fifths of the volume of the main cavity.

[0016] Compared with the prior art, the present invention provides an external speaker over-ear headphone with the following advantages:

[0017] 1. This external speaker over-ear headphone uses a tail hook to form a snail-shaped or ear-shaped structure with the shell, so as to better fit the contour of the ear and ensure wearing comfort. At the end of the tail hook, there is a teardrop-shaped or earlobe-shaped expansion to better fit between the back of the ear and the side of the head, so as to ensure the stability of the over-ear position.

[0018] 2. This external speaker over-ear headphone uses two sound waves with equal energy and opposite phase to cancel each other out at the near end of the headphone, thus effectively preventing sound leakage.

[0019] 3. For this external speaker over-ear headphone, the sum of the areas of the two bass reflex ports should ideally be 80% of the area of ​​the main sound port. This ensures that the main sound transmission path is directly facing the ear canal, making the transmitted energy more concentrated. On the other hand, it can ensure effective noise cancellation, prevent sound leakage, protect the listener's privacy, reduce the impact on others in public places, and improve one's civilized behavior.

[0020] 4. This external speaker over-ear headphone uses a resonant cavity volume that is two-fifths of the main cavity volume. While ensuring an effective proportion of the inner cavity of the shell, it ensures the resonance effect of sound wave transmission and maximizes the bass effect.

[0021] The parts of this device not described herein are the same as or can be implemented using existing technologies. By forming a resonant cavity, the present invention generates a powerful sound wave at the main sound outlet during the transmission of sound by the sound generator, thereby enhancing the energy of the low-frequency sound wave and making the bass effect more obvious. Furthermore, the sound emission direction adjusted by the first reflector is directly facing the ear canal, thereby reducing sound leakage and concentrating and directionally transmitting the sound. Attached Figure Description

[0022] Figure 1 The isometric view of an external speaker over-ear headphone proposed in this invention. Figure 1 ;

[0023] Figure 2 The isometric view of an external speaker over-ear headphone proposed in this invention. Figure 2 ;

[0024] Figure 3 The planar shape of the external speaker over-ear headphone proposed in this invention Figure 1 ;

[0025] Figure 4 The planar shape of the external speaker over-ear headphone proposed in this invention Figure 2 ;

[0026] Figure 5 This invention proposes an external speaker over-ear headphone. Figure 4 A sectional view of section AA;

[0027] Figure 6 The planar shape of the external speaker over-ear headphone proposed in this invention Figure 3 ;

[0028] Figure 7 This invention proposes an external speaker over-ear headphone. Figure 6 A sectional view of section BB;

[0029] Figure 8 This invention proposes an external speaker over-ear headphone. Figure 6 A sectional view of the CC section.

[0030] In the diagram: 1. Shell; 2. Main cavity; 3. Resonance cavity; 4. First reflector; 5. Damping cotton; 6. Mesh; 7. Sound generator; 8. Phase reversal cavity; 9. Main sound outlet; 10. Second reflector; 11. First phase reversal sound outlet; 12. Second phase reversal sound outlet; 13. Tail hook. Detailed Implementation

[0031] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments.

[0032] In the description of this invention, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and 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. Therefore, they should not be construed as limitations on this invention.

[0033] Example:

[0034] Reference Figures 1-8An external speaker over-ear headphone includes a sealed hollow shell 1 formed by splicing an upper shell and a lower shell. The shell 1 has an integrally formed tail hook 13, which forms a snail-shaped or ear-shaped structure with the shell 1 to better fit the contour of the ear and ensure wearing comfort. The end of the tail hook 13 has a teardrop-shaped or earlobe-shaped expansion to better rest between the back of the ear and the side of the head, ensuring stability when worn. A speaker 7 is installed inside the shell 1, with the front sound-emitting end of the speaker 7 connected to the shell 1. The inner surface forms the main cavity 2, and a resonant cavity 3 extends tangentially to one side along the edge contour of the main cavity 2. The resonant cavity 3 is connected to the main cavity 2. When music is played or sound is emitted, the air inside the main cavity 2 is forcibly compressed under the action of the sound generator 7, thereby generating resonance. This vibration drives the air movement inside the resonant cavity 3, generating resonance according to the Helmholtz resonance principle. This resonance generates a powerful sound wave at the main sound outlet 9, thereby enhancing the low-frequency energy of the sound wave and making the bass... The effect is more obvious, thereby improving the wearer's auditory experience. In addition, a first reflector 4 is provided at the end of the resonant cavity 3 away from the main cavity 2. The main sound outlet 9 is located directly opposite the first reflector 4. The sound wave reflected by the first reflector 4 is emitted from the main sound outlet 9 in positive phase. In order to ensure that the sound of the speaker 7 can be stably reflected and enter the ear canal after being amplified, the path of the sound after resonance and the path emitted after reflection have a certain angle, ranging from 45° to 90°, preferably 75°. For the angle, the structure of the shell 1 on the main sound outlet 9 also has a certain protrusion structure relative to the outer side of the main cavity 2 and the resonant cavity 3. The main sound outlet 9 is located on the protrusion. The phase inversion cavity 8, which extends tangentially along the outer contour line of the main cavity 2 and intersects with the path propagation line of the resonant cavity 3, forms a triangular structure. The phase inversion cavity 8 covers the side and back of the speaker 7 and extends to the side away from the main cavity 2 to form a detour. A sound-absorbing component is provided at the hook position of the detour to reduce sound leakage.

[0035] Here, the formation of the resonant cavity 3 can be either an integral channel cavity formed directly with the housing 1 during the manufacturing process, or it can be a separate L-shaped plate that can be spliced ​​together. It can be installed inside the housing 1, and the first reflector 4 can also be placed on the plate. By covering the side of the speaker 7 with one end of the plate, the bottom surface of the plate and the housing 1 can form a resonant cavity 3 that communicates with the main cavity 2. It can also be fully connected to the first reflector 4 to ensure smooth sound resonance and transmission, thereby ensuring the bass transmission effect.

[0036] In the above scheme, the main method is to form a resonant cavity 3, so that during the transmission of sound by the sound generator 7, the resonance effect generates a powerful sound wave at the main sound outlet 9, thereby enhancing the energy of the low frequency of the sound wave and making the bass effect more obvious. In addition, the sound emission direction adjusted by the first reflector 4 is directly facing the ear canal, thereby reducing sound leakage and concentrating and directional transmission of sound.

[0037] Reference Figure 7 and Figure 8 In the aforementioned external speaker over-ear headphones, a second reflector 10 is provided at the corner of the bend. Opposite the second reflector 10 is an independent arc-shaped plate extending from the housing 1. That is, the arc-shaped plate divides the overall bass reflex cavity 8 into two cavities, one large and one small. The large cavity is the main bass reflex cavity 8, and the small cavity is for transmitting sound to the outside. The two cavities are coupled at the junction, and the coupling structure is the second reflector 10. The noise reduction component and the sound generator 7 are respectively located on both sides of the arc-shaped plate. In the specific noise reduction process, the first bass reflex outlet 11 and the second bass reflex outlet 12 are arranged opposite to each other in the small cavity. The sound wave of the first bass reflex outlet 11 is in the same phase as the sound wave of the main outlet 9, and the sound wave of the second bass reflex outlet 12 is opposite to the sound wave of the main outlet 9. Through the two sound waves with equal energy and opposite phase, they cancel each other out at the near end of the headphones, thereby effectively preventing sound leakage.

[0038] For the first reflector 4 and the second reflector 10 mentioned in the above scheme, their reflective surfaces are both concave spherical surfaces. The main sound outlet 9 is located at the center of the concave spherical surface of the first reflector 4, thereby effectively improving the concentration of sound generation and enhancing the concentration and stability of sound transmission. The end of the arc plate extends to or near the center of the concave spherical surface of the second reflector 10, which can effectively achieve noise reduction.

[0039] Reference Figures 1-8 The first phase-reversing sound outlet 11, the second phase-reversing sound outlet 12 and the main sound outlet 9 are all provided with a mesh fabric 6 with a mesh count of 200-300, preferably 280 mesh, which can ensure stable sound transmission while preventing foreign objects in the ear canal from entering the shell 1 during long-term wear.

[0040] In addition, the main sound outlet 9 is a stepped hole, with the mesh 6 placed at the large end of the stepped hole and the small end of the stepped hole filled with damping cotton 5 with a sponge structure. The damping cotton 5 and the mesh 6 are attached to form a double layer of protection, and the damping cotton 5 can further enhance the weight of the bass, making the bass effect more prominent.

[0041] The cross-sectional area of ​​the main sound outlet 9 is greater than or equal to the sum of the areas of the first phase-reversing sound outlet 11 and the second phase-reversing sound outlet 12. Here, the sum of the areas of the two phase-reversing sound outlets is 80% of the area of ​​the main sound outlet 9, which is optimal. On the one hand, it ensures that the main sound transmission path is directly opposite the ear canal, making the transmitted energy more concentrated. On the other hand, it can ensure effective noise reduction, prevent sound leakage, and protect the privacy of the listener.

[0042] Furthermore, the main sound outlet 9 is crescent-shaped or semi-circular, which can effectively counteract the quarter-spherical concave surface of the first reflector 4, preventing sound waves from being blocked and rebounding, and effectively improving the transmission accuracy of sound.

[0043] The volume of the resonant cavity 3 is two-fifths of the volume of the main cavity 2. Under the premise of ensuring the effective proportion of the inner cavity of the shell 1, it ensures the resonance effect of sound wave transmission and maximizes the effect of producing low frequencies.

[0044] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. An external speaker over-ear headphone, comprising a housing (1) and a speaker (7) disposed within the housing (1), characterized in that, The front sound-emitting end of the sound generator (7) is provided with a main cavity (2) and a resonant cavity (3) extending to one side along the main cavity (2). Among them, the resonant cavity (3) is provided with a first reflector (4) at one end away from the main cavity (2), and a main sound outlet (9) is provided on the opposite side of the first reflector (4). The sound wave reflected by the first reflector (4) is emitted from the main sound outlet (9) in positive phase. A phase-reversing cavity (8) is formed extending along the side of the main cavity (2) and intersecting with the resonant cavity (3). The phase-reversing cavity (8) covers the sound generator (7) and extends to the side away from the main cavity (2) to form a detour section. A noise-reducing component is provided at the end of the detour section. A second reflector (10) is provided at the inflection point of the detour section. An independent arc-shaped plate extending from the housing (1) is provided directly opposite the second reflector (10). The silencing component and the sound generator (7) are respectively provided on both sides of the arc-shaped plate. The noise reduction assembly includes a first phase-inverting sound outlet (11) and a second phase-inverting sound outlet (12) arranged opposite to each other. Both the first phase-inverting sound outlet (11) and the second phase-inverting sound outlet (12) are located at the end of the detour section. The sound wave phase of the first phase-inverting sound outlet (11) is the same as that of the main sound outlet (9), and the sound wave phase of the second phase-inverting sound outlet (12) is opposite to that of the main sound outlet (9).

2. A supra-aural headphone according to claim 1, characterized in that The reflecting surfaces of the first reflector (4) and the second reflector (10) are both concave spherical surfaces. The main sound outlet (9) is located at the center of the concave spherical surface of the first reflector (4). The end of the arc plate extends to the center of the concave spherical surface of the second reflector (10).

3. The external speaker over-ear headphone according to claim 1, characterized in that, The first phase inversion sound outlet (11), the second phase inversion sound outlet (12) and the main sound outlet (9) are all provided with mesh cloth (6).

4. The external speaker over-ear headphone according to claim 3, characterized in that, The mesh count of the mesh fabric (6) is 200-300.

5. The external speaker over-ear headphone according to claim 3, characterized in that, The main sound outlet (9) is a stepped hole, and the mesh (6) is placed at the large end of the stepped hole. The small end of the stepped hole is filled with damping cotton (5), and the damping cotton (5) is attached to the mesh (6).

6. The external speaker over-ear headphone according to claim 5, characterized in that, The cross-sectional area of ​​the main sound outlet (9) is greater than or equal to the sum of the areas of the first phase-inverting sound outlet (11) and the second phase-inverting sound outlet (12).

7. An external speaker over-ear headphone according to any one of claims 1-6, characterized in that, The main sound outlet (9) is crescent-shaped or semi-circular.

8. An external speaker over-ear headphone according to any one of claims 1-6, characterized in that, The volume of the resonant cavity (3) is two-fifths of the volume of the main cavity (2).

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