360-degree surround sound field Bluetooth sound box

Abstract

The utility model discloses a 360-degree surround sound field bluetooth sound box, which comprises a sound box shell, a first loudspeaker, a first passive radiator, a second loudspeaker, a second passive radiator and a PCBA circuit board, a sound box inner cavity is arranged in the sound box shell, the first loudspeaker and the first passive radiator are parallelly arranged at the front end of the sound box shell and face the front, and the second loudspeaker and the second passive radiator are parallelly arranged at the back end of the sound box shell. The first loudspeaker and the first passive radiator are installed at the rear end of the loudspeaker box shell in parallel and face the rear, the second loudspeaker and the second passive radiator are installed at the rear end of the loudspeaker box shell in parallel and face the rear, the first loudspeaker, the first passive radiator, the second loudspeaker and the second passive radiator are respectively back to the inner cavity of the loudspeaker box, and the PCBA circuit board is installed in the loudspeaker box shell and is respectively and electrically connected with the first loudspeaker and the second loudspeaker. According to the utility model, the front and rear parts are provided with double horns and double passive radiators, so that a 360-degree surrounding sound field can be realized, and the overall sound quality of the sound box can be improved, especially the bass sound quality effect can be improved.

Description

Technical Field

[0001] The utility model relates to the technical field of sound boxes, in particular to a 360-degree surround sound field Bluetooth speaker. Background Art

[0002] Speakers refer to devices that can convert audio signals into sound. With the development of intelligent speakers, Bluetooth speakers that can connect to Bluetooth devices (such as smartphones, tablets, TVs, etc.) are gradually being widely used. Currently, Bluetooth speakers on the market usually only have speakers installed on one side, and the sound can only come out from one direction of the Bluetooth speaker, making it difficult to achieve a 360-degree surround sound field.

[0003] With the advancement of technology, Bluetooth speakers with speakers installed on both sides gradually appear. See patent document CN206674172U, which discloses a flash Bluetooth speaker, including a player, the player includes a rear shell, a front shell that is buckled with the rear shell, and a accommodating space is formed in the buckled body of the rear shell and the front shell. The bottom of the accommodating space is installed with a bottom cover, and a main board is installed on the top of the bottom cover. The front speaker is installed forward on the top of the main board, and the rear speaker is installed backward. The front diaphragm and the rear diaphragm are installed outside the front speaker and the rear speaker respectively, and a speaker hole is provided in the middle of the front shell, and a speaker hole is provided in the middle of the rear shell. Although the patent document CN206674172U can realize double-sided sound through the front speaker and the rear speaker, when the front speaker and the rear speaker are double-sided, the airflow in the speaker box is easily disturbed, and the airflow disturbed by the front speaker and the rear speaker is easy to interfere with each other, which reduces the overall sound quality of the speaker, especially the bass effect is poor. Utility Model Content

[0004] The technical problem to be solved by the utility model is to provide a 360-degree surround sound field Bluetooth speaker with front and rear dual speakers and dual passive radiators to improve the overall sound quality of the speaker, especially the bass sound quality effect.

[0005] To solve the above technical problems, the technical solution of the utility model is: a 360-degree surround sound field Bluetooth speaker, comprising a speaker shell, a first speaker, a first passive radiator, a second speaker, a second passive radiator and a PCBA circuit board, the speaker shell having a speaker inner cavity, the first speaker and the first passive radiator being installed in parallel at the front end of the speaker shell and facing forward, the second speaker and the second passive radiator being installed in parallel at the rear end of the speaker shell and facing backward, the first speaker, the first passive radiator, the second speaker and the second passive radiator respectively facing away from the speaker inner cavity, the PCBA circuit board being installed in the speaker shell, and the PCBA circuit board being electrically connected to the first speaker and the second speaker respectively.

[0006] Preferably, the first horn and the second passive radiator are located opposite to each other front to back, and the first passive radiator and the second horn are located opposite to each other front to back.

[0007] Preferably, the speaker housing comprises a front housing and a rear housing, the front housing is installed inside the front end of the rear housing, and the speaker inner cavity is located inside the rear housing.

[0008] Preferably, the front shell body is provided with a first speaker mounting portion and a first radiator mounting portion in parallel, the first speaker is mounted on the first speaker mounting portion, and the first passive radiator is mounted on the first radiator mounting portion; the rear end of the rear shell body is provided with a second speaker mounting portion and a second radiator mounting portion in parallel, the second speaker is mounted on the second speaker mounting portion, and the second passive radiator is mounted on the second radiator mounting portion; a circuit board positioning portion is also provided inside the rear shell body, and the PCBA circuit board is mounted on the circuit board positioning portion.

[0009] Preferably, the PCBA circuit board is provided with a USB TYPE-C interface, and the rear housing is provided with a jack corresponding to the USB TYPE-C interface.

[0010] Preferably, a battery slot is further provided in the rear shell, a battery is installed in the battery slot, a battery block is provided on the rear side of the front shell, the battery block blocks the front side of the battery, and the PCBA circuit board is electrically connected to the battery.

[0011] Preferably, a volume knob, a button and an indicator light are installed at the lower end of the front housing, and the PCBA circuit board is electrically connected to the volume knob, the button and the indicator light respectively.

[0012] Preferably, a front grille and a panel are installed at the front end of the front shell, the panel is located at the lower end of the front grille and in front of the volume knob, buttons and indicator light; a rear grille is installed at the rear end of the rear shell.

[0013] The beneficial effects of the present invention are as follows: since the speaker shell of the present invention has a speaker cavity inside, the front end of the speaker shell is provided with a first speaker and a first passive radiator installed in parallel, the first speaker and the first passive radiator face forward, and the rear end of the speaker shell is provided with a second speaker and a second passive radiator installed in parallel, the second speaker and the second passive radiator face backward, and the first speaker, the first passive radiator, the second speaker and the second passive radiator respectively face away from the speaker cavity. Therefore, on the one hand, the first speaker and the second speaker can emit sound forward and backward to achieve a 360-degree surround sound field effect; on the other hand, the airflow generated by the vibration of the first speaker and the second speaker can enter the speaker cavity and be transmitted to the first passive radiator and the second passive radiator. The first passive radiator and the second passive radiator passively emit sound under the drive of the airflow in the speaker cavity, thereby eliminating the disturbance of the airflow in the speaker cavity and improving the overall sound quality of the speaker, especially improving the bass sound quality effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 This is one of the overall structural diagrams of the utility model.

[0015] Figure 2 This is the second overall structural diagram of the present utility model.

[0016] Figure 3 It is a cross-sectional structural diagram of the utility model.

[0017] Figure 4 This is one of the dispersed structure diagrams of the utility model.

[0018] Figure 5 This is the second dispersed structure diagram of the present utility model.

[0019] In the figure: 1. speaker shell; 11. front shell; 12. rear shell; 13. first speaker mounting portion; 14. first radiator mounting portion; 15. second speaker mounting portion; 16. second radiator mounting portion; 17. circuit board positioning portion; 18. jack; 19. battery slot; 20. battery block; 2. first speaker; 3. first passive radiator; 4. second speaker; 5. second passive radiator; 6. PCBA circuit board; 7. battery; 81. volume knob; 82. button; 83. indicator light; 91. front grille; 92. panel; 93. rear grille; 10. speaker cavity. DETAILED DESCRIPTION

[0020] The structural principle and working principle of the utility model are further described in detail below with reference to the accompanying drawings.

[0021] like Figure 1-Figure 5As shown, the utility model is a 360-degree surround sound field Bluetooth speaker, comprising a speaker housing 1, a first speaker 2, a first passive radiator 3, a second speaker 4, a second passive radiator 5 and a PCBA circuit board 6. The speaker housing 1 has a speaker cavity 10. The first speaker 2 and the first passive radiator 3 are installed in parallel at the front end of the speaker housing 1 and face the front. The second speaker 4 and the second passive radiator 5 are installed in parallel at the rear end of the speaker housing 1 and face the rear. The first speaker 2, the first passive radiator 3, the second speaker 4 and the second passive radiator 5 are respectively facing away from the speaker cavity 10. The PCBA circuit board 6 is installed in the speaker housing 1, and the PCBA circuit board 6 is electrically connected to the first speaker 2 and the second speaker 4, respectively. The first speaker 2 and the second speaker 4 of the utility model can emit sound forward and backward to achieve a 360-degree surround sound field effect; the airflow generated by the vibration of the first speaker 2 and the second speaker 4 of the utility model can enter the inner cavity 10 of the speaker and be transmitted to the first passive radiator 3 and the second passive radiator 5. The first passive radiator 3 and the second passive radiator 5 passively emit sound under the drive of the airflow in the inner cavity 10 of the speaker, thereby eliminating the disturbance of the airflow in the inner cavity 10 of the speaker and improving the overall sound quality of the speaker, especially improving the bass sound quality effect.

[0022] like Figure 3-Figure 5 As shown, the positions of the first speaker 2 and the second passive radiator 5 are opposite to each other, and the positions of the first passive radiator 3 and the second speaker 4 are opposite to each other. In this way, on the one hand, the first speaker 2 and the second speaker 4 are staggered to avoid mutual interference between the first speaker 2 and the second speaker 4 during installation, so that the volume of the Bluetooth speaker can be controlled to be smaller; on the other hand, the weight of the left and right ends of the Bluetooth speaker can be balanced as a whole; on the other hand, the most important thing is that the vibration sound waves generated by the first speaker 2 can be directly transmitted to the first passive radiator 3, and the vibration sound waves generated by the second speaker 4 can also be directly transmitted to the second passive radiator 5, which can better improve the overall sound quality of the speaker and better improve the bass sound quality effect.

[0023] like Figure 3-Figure 5As shown, the speaker housing 1 includes a front housing 11 and a rear housing 12, wherein the front housing 11 is installed inside the front end of the rear housing 12, and the speaker cavity 10 is located inside the rear housing 12. This can improve the integrity of the speaker, make the entire speaker seamless, and make the speaker cavity 10 more stable. The front housing 11 is provided with a first speaker mounting portion 13 and a first radiator mounting portion 14 in parallel, wherein the first speaker 2 is installed on the first speaker mounting portion 13, and the first passive radiator 3 is installed on the first radiator mounting portion 14; the rear end of the rear housing 12 is provided with a second speaker mounting portion 15 and a second radiator mounting portion 16 in parallel, wherein the second speaker 4 is installed on the second speaker mounting portion 15, and the second passive radiator 5 is installed on the second radiator mounting portion 16; a circuit board positioning portion 17 is also provided inside the rear housing 12, and the PCBA circuit board 6 is installed on the circuit board positioning portion 17.

[0024] like Figure 3-Figure 5 As shown, the PCBA circuit board 6 is provided with a USB TYPE-C interface 61, and the rear housing 12 is provided with a jack 18 corresponding to the USB TYPE-C interface 61. A battery slot 19 is also provided in the rear housing 12, and a battery 7 is installed in the battery slot 19. A battery block 20 is provided on the rear side of the front housing 11, and the battery block 20 blocks the front side of the battery 7, and the PCBA circuit board 6 is electrically connected to the battery 7. The battery 7 can be charged through the USB TYPE-C interface 61. By providing the battery 7, preferably a rechargeable battery, the Bluetooth speaker can be easily moved and carried.

[0025] like Figure 1-Figure 5 As shown, a volume knob 81, a button 82 and an indicator light 83 are installed at the lower end of the front housing 11. The indicator light 83 includes a Bluetooth signal indicator and a network signal indicator. The PCBA circuit board 6 is electrically connected to the volume knob 81, the button 82 and the indicator light 83 respectively. A front mesh cover 91 and a panel 92 are installed at the front end of the front housing 11. The panel 92 is located at the lower end of the front mesh cover 91 and at the front side of the volume knob 81, the button 82 and the indicator light 83; a rear mesh cover 93 is installed at the rear end of the rear housing 12.

[0026] The above is only a preferred embodiment of the present invention. Any slight modification, equivalent changes and modifications made to the above embodiments according to the technical solution of the present invention are within the scope of the technical solution of the present invention.

Claims

1. A 360-degree surround sound field Bluetooth speaker, characterized by: The speaker comprises a speaker housing (1), a first speaker (2), a first passive radiator (3), a second speaker (4), a second passive radiator (5) and a PCBA circuit board (6); the speaker housing (1) has a speaker inner cavity (10); the first speaker (2) and the first passive radiator (3) are installed in parallel at the front end of the speaker housing (1) and face forward; the second speaker (4) and the second passive radiator (5) are installed in parallel at the rear end of the speaker housing (1) and face backward; the first speaker (2), the first passive radiator (3), the second speaker (4) and the second passive radiator (5) are respectively facing away from the speaker inner cavity (10); the PCBA circuit board (6) is installed in the speaker housing (1); and the PCBA circuit board (6) is respectively electrically connected to the first speaker (2) and the second speaker (4).

2. The 360-degree surround sound field Bluetooth speaker according to claim 1, characterized in that: The first horn (2) and the second passive radiator (5) are located opposite to each other in front and back, and the first passive radiator (3) and the second horn (4) are located opposite to each other in front and back.

3. The 360-degree surround sound field Bluetooth speaker according to claim 1, characterized in that: The speaker housing (1) comprises a front housing (11) and a rear housing (12); the front housing (11) is installed inside the front end of the rear housing (12); and the speaker inner cavity (10) is located inside the rear housing (12).

4. The 360-degree surround sound field Bluetooth speaker according to claim 3, characterized in that: The front housing (11) is provided with a first speaker mounting portion (13) and a first radiator mounting portion (14) in parallel, the first speaker (2) is mounted on the first speaker mounting portion (13), and the first passive radiator (3) is mounted on the first radiator mounting portion (14); the rear end of the rear housing (12) is provided with a second speaker mounting portion (15) and a second radiator mounting portion (16) in parallel, the second speaker (4) is mounted on the second speaker mounting portion (15), and the second passive radiator (5) is mounted on the second radiator mounting portion (16); a circuit board positioning portion (17) is also provided inside the rear housing (12), and the PCBA circuit board (6) is mounted on the circuit board positioning portion (17).

5. The 360-degree surround sound field Bluetooth speaker according to claim 4, characterized in that: The PCBA circuit board (6) is provided with a USB TYPE-C interface (61), and the rear housing (12) is provided with a socket (18) corresponding to the USB TYPE-C interface (61).

6. The 360-degree surround sound field Bluetooth speaker according to claim 3, characterized in that: A battery slot (19) is also provided inside the rear housing (12), a battery (7) is installed inside the battery slot (19), a battery block (20) is provided on the rear side of the front housing (11), the battery block (20) is blocked against the front side of the battery (7), and the PCBA circuit board (6) is electrically connected to the battery (7).

7. The 360-degree surround sound field Bluetooth speaker according to claim 3, characterized in that: A volume knob (81), a button (82) and an indicator light (83) are mounted on the lower end of the front housing (11), and the PCBA circuit board (6) is electrically connected to the volume knob (81), the button (82) and the indicator light (83), respectively.

8. The 360-degree surround sound field Bluetooth speaker according to claim 7, characterized in that: A front mesh cover (91) and a panel (92) are installed at the front end of the front housing (11); the panel (92) is located at the lower end of the front mesh cover (91) and in front of the volume knob (81), the button (82) and the indicator light (83); and a rear mesh cover (93) is installed at the rear end of the rear housing (12).

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