Microphone and vehicle

Abstract

The utility model belongs to the technical field of vehicle-mounted microphones, and particularly relates to a microphone and a vehicle. The microphone comprises a transmitting antenna, a mainboard, a microphone core and a microphone core lead, the transmitting antenna is electrically connected with the mainboard, the mainboard is provided with a microphone core connecting position, and the microphone core is electrically connected with the microphone core connecting position through the microphone core lead to jointly form a microphone core parasitic antenna; the length of the microphone core parasitic antenna is larger than or smaller than that of the transmitting antenna. The resonant frequency generated by the microphone core parasitic antenna is not within the working frequency range of the transmitting antenna, so that the interference of the microphone core parasitic antenna on the transmitting antenna is reduced.

Description

Technical Field

[0001] The utility model belongs to the technical field of vehicle-mounted microphones, and particularly relates to a microphone and a vehicle. Background Art

[0002] Some vehicles need to be equipped with microphones. As a device that converts sound signals into electrical signals and transmits them through an antenna, a transmitting antenna needs to be configured on the microphone.

[0003] The microphone in the related art includes a tube body, a main board, a microphone element, and a transmitting antenna. The transmitting antenna is electrically connected to the main board and they are jointly installed in the tube body. The microphone element is connected to the bottom end of the tube body and is electrically connected to the main board through a microphone element lead wire. When the microphone works, the microphone element converts the sound signal into an electrical signal, and the transmitting antenna propagates the electrical signal. The radio signal is received by the vehicle-mounted receiver antenna.

[0004] In the above-mentioned microphone, the microphone element, the main board, and the microphone element lead wire jointly form a microphone element parasitic antenna. The microphone element parasitic antenna and the transmitting antenna are arranged in the tube body with limited internal space, and the microphone element parasitic antenna is likely to interfere with the transmitting antenna. Summary of the Utility Model

[0005] The technical problem to be solved by the utility model is: aiming at the problem that in the existing microphone, the microphone element parasitic antenna is likely to interfere with the transmitting antenna, a microphone and a vehicle are provided.

[0006] To solve the above technical problem, on the one hand, an embodiment of the utility model provides a microphone, including a transmitting antenna, a main board, a microphone element, and a microphone element lead wire. The transmitting antenna is electrically connected to the main board. A microphone element connection position is arranged on the main board. The microphone element is electrically connected to the microphone element connection position through the microphone element lead wire to jointly form a microphone element parasitic antenna;

[0007] The length of the microphone element parasitic antenna is greater than or less than the length of the transmitting antenna.

[0008] Optionally, the microphone element is located at the bottom end of the microphone, the main board extends along the length direction of the microphone, and the length of the microphone element parasitic antenna is greater than the length of the transmitting antenna.

[0009] Optionally, the microphone element lead wire includes a first horizontal section and a first vertical section connected to one end of the first horizontal section. The first horizontal section extends towards the plate surface of the main board to the main board. The other end of the first horizontal section is connected to the microphone element. The first vertical section extends along the plate surface of the main board away from the microphone element and is connected to the microphone element connection position. Optionally, the transmitting antenna is arranged facing the plate surface of the main board. In the length direction of the microphone, the microphone element is arranged close to the bottom side of the transmitting antenna.

[0010] Optionally, the microphone further includes a battery and a battery lead wire. A battery connection position is also provided on the main board. The battery is electrically connected to the battery connection position through the battery lead wire to jointly form a battery parasitic antenna; the length of the battery parasitic antenna is greater than or less than the length of the transmitting antenna.

[0011] Optionally, the battery and the transmitting antenna are arranged facing the board surface of the main board and are arranged in sequence along the length direction of the microphone; the battery has a power supply end and a terminal end that are oppositely arranged in the length direction of the microphone, and the power supply end is connected to the battery lead wire.

[0012] Optionally, the battery lead wire includes a second horizontal section and a second vertical section connected to one end of the second horizontal section. The second horizontal section extends towards the board surface of the main board to the main board. The other end of the second horizontal section is connected to the power supply end of the battery, and the second vertical section extends along the board surface of the main board and is connected to the battery connection position.

[0013] Optionally, the power supply end is arranged away from the transmitting antenna, and the second vertical section extends along the main board towards the side close to the transmitting antenna.

[0014] Optionally, the power supply end is arranged close to the transmitting antenna. A feeding area connected to the main board is provided on the transmitting antenna. The second vertical section extends along the main board towards the side close to the feeding area or towards the side away from the feeding area.

[0015] Optionally, the battery and the main board are arranged in parallel at an interval. In the length direction of the microphone, the battery is located on the side of the transmitting antenna away from the microphone element.

[0016] Optionally, the battery is strip-shaped, and / or, the main board is in the shape of a long board.

[0017] Optionally, the microphone further includes a bracket, and the transmitting antenna, the microphone element and the main board are fixed on the bracket.

[0018] Optionally, the bracket includes a first bracket and a second bracket arranged along the length direction of the microphone. The transmitting antenna and the main board are fixed on the first bracket, and the microphone element is fixed on the second bracket.

[0019] Optionally, the transmitting antenna includes a first antenna segment, a second antenna segment and a third antenna segment connected in sequence. The first antenna segment, the second antenna segment and the third antenna segment are respectively attached to adjacent side surfaces of the bracket. The first antenna segment and the third antenna segment are oppositely arranged, and the main board is attached to the side surface of the bracket opposite to the second antenna segment.

[0020] Optionally, the transmitting antenna includes a low-frequency transmitting antenna and a high-frequency transmitting antenna. The length of the low-frequency transmitting antenna is greater than that of the high-frequency transmitting antenna. The length of the parasitic antenna of the microphone core is greater than that of the low-frequency transmitting antenna, or the length of the parasitic antenna of the microphone core is less than that of the high-frequency transmitting antenna.

[0021] Optionally, the low-frequency transmitting antenna is continuously bent along the surface of the bracket; the high-frequency transmitting antenna extends linearly along the surface of the bracket.

[0022] Optionally, the microphone further includes a charging interface, and the charging interface is installed at one end of the main board away from the microphone core.

[0023] Optionally, the microphone further includes a power button and a function button. The power button and the function button are installed on the main board. In the length direction of the microphone, the power button and the function button are arranged opposite to or close to the transmitting antenna.

[0024] Optionally, the microphone further includes a metal mesh cover. The metal mesh cover covers the outside of the microphone core, and a grounding area is provided on the metal mesh cover. The grounding area is electrically connected to the ground wire on the main board.

[0025] On the other hand, an embodiment of the present invention provides a vehicle, including the above-mentioned microphone.

[0026] In the microphone of the present invention, the microphone core is electrically connected to the microphone connection position on the main board through a microphone core lead wire to jointly form a parasitic antenna of the microphone core. Since the length of the parasitic antenna of the microphone core is greater than or less than that of the transmitting antenna, the wavelength of the electromagnetic wave emitted by the parasitic antenna of the microphone core is greater than or less than the wavelength of the electromagnetic wave emitted by the transmitting antenna, so that the resonant frequency generated by the parasitic antenna of the microphone core is not within the operating frequency range of the transmitting antenna, thereby reducing the interference of the parasitic antenna of the microphone core on the transmitting antenna. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 is a schematic structural diagram of a microphone provided by an embodiment of the present invention;

[0028] Figure 2 is Figure 1 the side view in

[0029] Figure 3 is Figure 2 the schematic structural diagram of the transmitting antenna and the metal mesh cover in

[0030] Figure 4 is Figure 2 the schematic structural diagram after hiding the metal mesh cover and the first bracket;

[0031] Figure 5It is a schematic structural diagram of a microphone provided by another embodiment of the present utility model.

[0032] The reference numerals in the specification are as follows:

[0033] 1. Bracket; 11. First bracket; 12. Second bracket; 2. Main board; 21. Function button; 22. Power button; 23. Battery connection position; 24. Microphone core connection position; 3. Metal mesh cover; 4. Transmitting antenna; 41. Low-frequency transmitting antenna; 42. High-frequency transmitting antenna; 43. Feeding area; 5. Battery; 6. Microphone core; 61. Grounding area; 7. Battery lead; 8. Microphone core lead; 9. Charging interface. Specific embodiments

[0034] In order to make the technical problems, technical solutions and beneficial effects solved by the present utility model clearer and more understandable, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present utility model and are not used to limit the present utility model.

[0035] Microphones are installed on some vehicles. A microphone is a device that converts sound signals into electrical signals and transmits them through an antenna.

[0036] As Figure 1 and Figure 2 shown, an embodiment of the present utility model provides a microphone, which includes a transmitting antenna 4, a main board 2, a microphone core 6 and a microphone core lead 8. The transmitting antenna 4 is electrically connected to the main board 2. A microphone core connection position 24 is provided on the main board 2. The microphone core 6 is electrically connected to the microphone core connection position 24 through the microphone core lead 8 to jointly form a microphone core parasitic antenna.

[0037] The length of the microphone core parasitic antenna is greater than or less than the length of the transmitting antenna 4.

[0038] When the microphone works, the microphone core 6 converts the sound signal into an electrical signal, and the transmitting antenna 4 propagates the electrical signal. The radio signal is received by the vehicle-mounted receiver.

[0039] The length of the so-called microphone core parasitic antenna refers to the connection length from the end of the microphone core 6 through the microphone core lead 8 to the microphone core connection position 24 on the main board 2. The end of the microphone core 6 refers to the position on the microphone core 6 where the electrical signal is generated and is the farthest from the microphone core connection position 24.

[0040] According to common general knowledge, the frequency and wavelength of the electromagnetic waves emitted by an antenna are related to the physical length of the antenna. The longer the physical length of the antenna, the longer the wavelength and the lower the frequency of the electromagnetic waves emitted by the antenna. Since the length of the parasitic antenna of the microphone core is greater than or less than the length of the transmitting antenna 4, the resonant frequency range generated by the parasitic antenna of the microphone core is not within the operating frequency range of the transmitting antenna 4, thereby reducing the influence of the parasitic antenna of the microphone core on the transmitting antenna 4, improving the efficiency of the transmitting antenna 4, and thus being able to appropriately reduce the transmitting power of the transmitting antenna 4, which greatly improves the passing rate of the EMC test of the microphone.

[0041] Specifically, when the length of the parasitic antenna of the microphone core is greater than the length of the transmitting antenna 4, the wavelength of the electromagnetic waves emitted by the parasitic antenna of the microphone core is greater than the wavelength of the transmitting antenna 4, and the resonant frequency range generated by the parasitic antenna of the microphone core is lower than the operating frequency range of the transmitting antenna 4. When the length of the parasitic antenna of the microphone core is less than the length of the transmitting antenna 4, the wavelength of the electromagnetic waves emitted by the parasitic antenna of the microphone core is less than the wavelength of the transmitting antenna 4, and the resonant frequency range generated by the parasitic antenna of the microphone core is higher than the operating frequency range of the transmitting antenna 4.

[0042] In the microphone of the present utility model, the microphone core 6 is electrically connected to the microphone core connection position 24 on the main board 2 through the microphone core lead 8 to jointly form a parasitic antenna of the microphone core. Since the length of the parasitic antenna of the microphone core is greater than or less than the length of the transmitting antenna 4, the wavelength of the electromagnetic waves emitted by the parasitic antenna of the microphone core is greater than or less than the wavelength of the electromagnetic waves emitted by the transmitting antenna 4, so that the resonant frequency generated by the parasitic antenna of the microphone core is not within the operating frequency range of the transmitting antenna 4, thereby reducing the interference of the parasitic antenna of the microphone core on the transmitting antenna 4.

[0043] In an embodiment, the microphone core 6 is located at the bottom end of the microphone, the main board 2 extends along the length direction of the microphone, and the length of the parasitic antenna of the microphone core is greater than the length of the transmitting antenna 4.

[0044] The so-called "bottom end" refers to the end of the microphone that collects sound, that is, the end where the microphone core is provided.

[0045] The microphone core 6 located at the bottom end of the microphone is arranged away from the microphone core connection position 24 on the main board 2 to increase the distance between the microphone core 6 and the microphone core connection position 24, thereby increasing the length of the parasitic antenna of the microphone core, which is beneficial to the length of the parasitic antenna of the microphone core being greater than the length of the transmitting antenna 4.

[0046] In an embodiment, as Figure 4 shown, the microphone core lead 8 includes a first horizontal section and a first vertical section connected to one end of the first horizontal section. The first horizontal section extends towards the surface of the main board 2 close to the main board 2 to the main board 2. The other end of the first horizontal section is connected to the microphone core 6. The first vertical section extends along the surface of the main board 2 away from the microphone core 6 and is connected to the microphone core connection position 24, so that the microphone core lead 8 can avoid the components on the main board 2 and be connected to the microphone core connection position 24 along the shortest path.

[0047] "Lateral" refers to a direction perpendicular to the board surface of the main board 2 or a direction with an angle other than 90° with the direction perpendicular to the board surface of the main board 2. "Vertical" refers to the length direction of the microphone or a direction with an angle other than 90° with the length direction of the microphone.

[0048] In one embodiment, the transmitting antenna 4 is arranged facing the board surface of the main board 2. In the length direction of the microphone, the microphone element 6 is arranged near the bottom side of the transmitting antenna 4, so that the distance between the parasitic antenna of the microphone element and the transmitting antenna 4 is relatively close. Since the distance between the parasitic antenna of the microphone element and the transmitting antenna 4 is low, the parasitic antenna of the microphone element has an impedance adjustment effect on the transmitting antenna 4. In the prior art, the transmitting antenna 4 usually uses an LC tuning circuit or a π-type network to achieve impedance matching of the antenna. In the present utility model, the transmitting antenna 4 uses the parasitic antenna of the microphone element for impedance matching debugging, reducing the additional impedance matching circuit.

[0049] The so-called "bottom side" refers to the side close to the microphone element 6 in the length direction of the microphone.

[0050] In one embodiment, as Figure 2 and Figure 4 shown, the microphone further includes a battery 5 and a battery lead 7. A battery connection position 23 is also arranged on the main board 2. The battery 5 is electrically connected to the battery connection position 23 through the battery lead 7 to jointly form a battery parasitic antenna; the length of the battery parasitic antenna is greater than or less than the length of the transmitting antenna 4.

[0051] When a battery 5 is arranged in a microphone in the prior art, the battery parasitic antenna formed by the battery 5, the battery lead 7 and the main board 2 is likely to interfere with the transmitting antenna 4 in a microphone with limited space. In the present utility model, the battery parasitic antenna is designed to have a length greater than or less than the length of the transmitting antenna 4. Therefore, the wavelength of the electromagnetic wave emitted by the battery parasitic antenna is greater than or less than the wavelength of the electromagnetic wave emitted by the transmitting antenna 4, so that the resonant frequency generated by the battery parasitic antenna is not within the operating frequency range of the transmitting antenna 4, reducing the interference of the battery parasitic antenna on the transmitting antenna 4.

[0052] In one embodiment, the battery 5 and the transmitting antenna 4 are arranged facing the board surface of the main board 2 and are arranged in sequence along the length direction of the microphone. The battery 5 has a power supply end and a terminal end arranged oppositely in the length direction of the microphone, and the power supply end is connected to the battery lead 7. Usually, the tube body of the microphone is cylindrical. The main board 2, the battery 5 and the transmitting antenna 4 are installed in the tube body. There is a space between the board surface of the main board 2 and the tube body to utilize this space to arrange the transmitting antenna 4 and the battery 5, improving the space utilization rate inside the microphone and being beneficial to arranging each component in a microphone with limited space.

[0053] In one embodiment, the battery lead 7 includes a second horizontal segment and a second vertical segment connected to one end of the second horizontal segment. The second horizontal segment extends towards the surface of the main board 2 to the main board 2. The other end of the second horizontal segment is connected to the battery 5. The second vertical segment extends along the surface of the main board 2 and is connected to the battery connection position 23, so that the battery lead 7 can avoid the components on the main board 2 and be connected to the battery connection position 23 along the shortest path.

[0054] In one embodiment, the power supply end is arranged far from the transmitting antenna 4. The second vertical segment extends along the main board 2 towards the side close to the transmitting antenna 4, so that the battery parasitic antenna is arranged far from the transmitting antenna 4. Moreover, it is beneficial to stagger the battery lead 7 and the microphone lead 8 led out from the bottom end of the microphone, so as to facilitate the arrangement of the battery lead 7 and the microphone lead 8 in a limited space.

[0055] The so-called "bottom end" refers to the end of the microphone that collects sound, that is, the end where the microphone element is arranged.

[0056] In one embodiment, as Figure 2 shown, the microphone further includes a first connector. The first connector includes a first male head and a first female head that mates with the first male head. The battery lead 7 is connected to the first male head, and the first female head is mounted on the main board 2 to form the battery connection position 23. Inserting the first male head into the first female head can realize the connection between the battery lead 7 and the battery connection position 23, improving the installation efficiency.

[0057] In one embodiment, the microphone further includes a second connector. The second connector includes a second male head and a second female head that mates with the second male head. The microphone lead 8 is connected to the second male head, and the second female head is mounted on the main board 2 to form the microphone connection position 24. Inserting the second male head into the second female head can realize the connection between the microphone lead 8 and the microphone connection position 24, improving the installation efficiency.

[0058] In one embodiment, as Figure 1 and Figure 2 shown, the battery 5 and the main board 2 are arranged in parallel at an interval. In the length direction of the microphone, the battery 5 is located on the side of the transmitting antenna 4 away from the microphone element 6.

[0059] In one embodiment, the battery 5 is long strip-shaped and the main board 2 is long plate-shaped.

[0060] In other embodiments, the battery 5 is long strip-shaped, or the main board 2 is long strip-shaped. Of course, the battery 5 can also be cylindrical or other shapes, and the main board 2 can also be curved, circular or other shapes.

[0061] In one embodiment, the microphone further includes a bracket 1, and the transmitting antenna 4, the microphone element 6, and the main board 2 are fixed on the bracket 1, so that the bracket 1, the transmitting antenna 4, the microphone element 6, and the main board 2 can be assembled on the bracket 1 first and then the assembled body can be installed into the tube body of the microphone, reducing the assembly difficulty and improving the installation efficiency.

[0062] In one embodiment, as Figure 2 and Figure 4 shown, the bracket 1 includes a first bracket 11 and a second bracket 12 arranged along the length direction of the microphone. The transmitting antenna 4 and the main board 2 are fixed on the first bracket 11, and the microphone element 6 is fixed on the second bracket 12. Separating the first bracket 11 and the second bracket 12 makes the structures of the first bracket 11 and the second bracket 12 simpler and facilitates processing.

[0063] In one embodiment, the main board 2 and the transmitting antenna 4 are attached to the outer surface of the first bracket 11. A battery compartment is provided inside the first bracket 11, and the battery 5 is installed in the battery compartment to reasonably utilize the outer surface and the internal space of the first bracket 11 to fix components, which is beneficial to arranging components such as the main board 2, the battery 5, and the transmitting antenna 4 in the limited space inside the microphone.

[0064] In one embodiment, as Figure 1 and Figure 2 shown, the transmitting antenna 4 includes a first antenna segment, a second antenna segment, and a third antenna segment connected in sequence. The first antenna segment, the second antenna segment, and the third antenna segment are respectively attached to adjacent side surfaces of the bracket 1. The first antenna segment and the third antenna segment are arranged oppositely, and the main board 2 is attached to the side surface of the bracket 1 opposite to the second antenna segment. The transmitting antenna 4 is bent along the surface of the bracket 1 to fix the transmitting antenna 4 on the bracket 1 with limited dimensions.

[0065] In one embodiment, as Figure 3 shown, the transmitting antenna 4 includes a low-frequency transmitting antenna 41 and a high-frequency transmitting antenna 42. The length of the low-frequency transmitting antenna 41 is greater than the length of the high-frequency transmitting antenna 42. The length of the parasitic antenna of the microphone element is greater than the length of the low-frequency transmitting antenna 41, or the length of the parasitic antenna of the microphone element is less than the length of the high-frequency transmitting antenna 42. Thus, the transmitting antenna 4 has dual operating frequency bands and avoids the parasitic antenna of the microphone element interfering with the transmitting antenna 4 having dual operating frequency bands. Usually, the microphone operates with the low-frequency transmitting antenna 41.

[0066] In one embodiment, the transmitting antenna 4 can be an FPC antenna or a metal block antenna. The metal block antenna can be made of materials such as stainless steel and copper.

[0067] In one embodiment, the low-frequency transmitting antenna 41 is continuously bent along the surface of the bracket 1. For example, it has a serpentine trace and the head and tail are not connected.

[0068] Since the high-frequency transmitting antenna 42 has a high frequency band and a short length, the high-frequency transmitting antenna 42 extends linearly along the surface of the bracket 1. The so-called linear extension does not limit the bending of the high-frequency transmitting antenna 42 at the adjacent sides of the bracket 1.

[0069] In one embodiment, the operating frequency band of the low-frequency transmitting antenna 41 is 650 MHz - 698 MHz, and the electrical length of the low-frequency transmitting antenna 41 is 1 / 4 wavelength of its operating frequency band.

[0070] In one embodiment, the operating frequency band of the high-frequency transmitting antenna 42 is 3.4 GHz - 3.6 GHz, and the electrical length of the high-frequency transmitting antenna 42 is 1 / 4 wavelength of its operating frequency band.

[0071] In one embodiment, the microphone further includes a charging interface 9, and the charging interface 9 is installed at one end of the main board 2 away from the microphone element 6.

[0072] In one embodiment, as Figure 4 shown, it further includes a power button 22 and a function button 21. The power button 22 and the function button 21 are installed on the main board 2. In the length direction of the microphone, the power button 22 and the function button 21 are disposed opposite to or close to the transmitting antenna 4.

[0073] It should be noted that the microphone further includes a tube body which has a receiving cavity. The bracket 1, the battery 5, the main board 2 and the transmitting antenna 4 are installed in the receiving cavity. The tube body is provided with avoidance holes for the power button 22 and the function button 21 to extend out. The power button 22 and the function button 21 extend out through the avoidance holes for the user to operate the power button 22 and the function button 21.

[0074] Since the power button 22 and the function button 21 occupy the position on the microphone that is opposite to or close to the transmitting antenna 4, when the user holds the microphone by hand, it can avoid the user holding the position opposite to or close to the transmitting antenna 4, thereby avoiding the situation that the distance between the hand and the transmitting antenna 4 is too small, resulting in a significant reduction in the efficiency of the transmitting antenna 4.

[0075] In one embodiment, as Figure 2 and Figure 3 shown, it further includes a metal mesh cover 3. The metal mesh cover 3 covers the outside of the microphone element 6. The metal mesh cover 3 is provided with a grounding area 61, and the grounding area 61 is electrically connected to the ground wire on the main board 2. The grounded metal mesh cover 3 serves as the radiation ground of the transmitting antenna 4 and has the ability to radiate electromagnetic waves outward, enabling the transmitting antenna 4 to have better radiation performance, that is, reducing the area of the transmitting antenna 4 and saving costs at the same time.

[0076] It should be noted that the metal mesh cover 3 is made of metal materials. The mesh holes of the metal mesh cover 3 in the figure are not drawn. The present utility model does not limit the size of the mesh holes of the metal mesh cover 3, and all the mesh holes can be densely distributed uniformly.

[0077] In one embodiment, the transmitting antenna 4 is connected to the main board 2 through a coaxial cable. One end of the inner conductor of the coaxial cable is connected to the feeding area 43 on the transmitting antenna 4, and the other end of the inner conductor is connected to the main board 2. One end of the outer conductor of the coaxial cable is connected to the grounding area 61 of the metal mesh cover 3, and the other end of the outer conductor is connected to the ground wire on the main board 2.

[0078] In one embodiment, the metal mesh cover 3 is fixed on the second bracket 12 by screws.

[0079] In one embodiment, the length of the battery parasitic antenna is greater than the length of the transmitting antenna 4. The bottom end face of the transmitting antenna 4 is flush with the bottom end face of the main board 2, and the power supply end of the battery 5 is located on the side far from the transmitting antenna 4. The position of the battery connection bit 23 affects the length of the battery parasitic antenna. Considering the requirement that the length of the battery parasitic antenna is greater than the length of the low-frequency transmitting antenna 41 and the material cost of the battery parasitic antenna, the position of the battery connection bit 23 is within a first range. The starting point of the first range is the position 5 mm from the power supply end of the battery 5 on the main board 2 towards the end side, and the end point of the first range is the position of the end face of the battery 5 on the main board 2. When the best position of the battery connection bit 23 is within the area between the starting point and the end point, the resonant frequency range generated by the battery parasitic antenna is much lower than the operating frequency range of the transmitting antenna 4.

[0080] In one embodiment, the length of the microphone core parasitic antenna is greater than the length of the transmitting antenna 4. The position of the microphone core connection bit 24 affects the length of the microphone core parasitic antenna. Considering the requirement that the length of the microphone core parasitic antenna is greater than the length of the low-frequency transmitting antenna 41 and the material cost of the microphone core parasitic antenna, the best position of the microphone core connection bit 24 is within a second range. The second range is 40 - 75 mm along the length direction of the main board 2 from the feeding area 43 towards the side away from the feeding area 43. The resonant frequency range generated by the microphone core parasitic antenna with the microphone core connection bit 24 within the second range is lower than the operating frequency band range of the low-frequency transmitting antenna 41.

[0081] In another embodiment, as Figure 5 shown, the power supply end of the battery 5 is located on the side close to the transmitting antenna 4. The transmitting antenna 4 is provided with a feeding area 43 connected to the main board 2, and the second vertical section extends along the main board 2 towards the side close to the feeding area 43 or towards the side away from the feeding area 43.

[0082] The position of the battery connection position 23 affects the length of the parasitic antenna of the microphone core. When the bottom end face of the transmitting antenna 4 is flush with the bottom end face of the main board 2, considering the requirement that the length of the battery parasitic antenna is greater than the length of the low-frequency transmitting antenna 41 and the consumable cost of the battery parasitic antenna, the optimal position of the battery connection position 23 is within the third range. The third range is 5-85 mm from the feeding area 43 to the power supply end side of the battery 5 along the height direction of the main board 2, so that the resonance frequency of the parasitic antenna of the microphone core is much lower than the operating frequency range of the transmitting antenna 4.

[0083] In other embodiments, the length of the parasitic antenna of the microphone core may be less than the length of the transmitting antenna 4.

[0084] In other embodiments, the length of the battery parasitic antenna may be less than the length of the transmitting antenna 4.

[0085] In other embodiments, the battery 5 and the transmitting antenna 4 may be located on both sides in the thickness direction of the main board 2.

[0086] In other embodiments, the transmitting antenna 4 may be fixed on the microphone core 6.

[0087] In other embodiments, the battery lead 7 may extend obliquely from the power supply end of the battery 5 to the battery connection position 23, and the microphone core lead 8 may extend obliquely from the microphone core 6 to the microphone core connection position 24.

[0088] In other embodiments, the main board 2, the transmitting antenna 4 and the microphone core 6 may all be fixed on a bracket 1.

[0089] In addition, an embodiment of the present invention provides a vehicle, including the microphone of the above embodiment.

[0090] The above are only the preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent replacements, and improvements made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. A microphone, characterized in that: The invention comprises a transmitting antenna (4), a main board (2), a microphone core (6) and a microphone core lead wire (8), wherein the transmitting antenna (4) is electrically connected to the main board (2), a microphone core connection position (24) is provided on the main board (2), and the microphone core (6) is electrically connected to the microphone core connection position (24) via the microphone core lead wire (8), so as to form a microphone core parasitic antenna together; The length of the microphone core parasitic antenna is greater than or less than the length of the transmitting antenna (4).

2. The microphone according to claim 1, characterized in that The microphone core (6) is located at the bottom end of the microphone, the main board (2) extends along the length direction of the microphone, and the length of the microphone core parasitic antenna is greater than the length of the transmitting antenna (4).

3. The microphone according to claim 2, characterized in that The microphone core lead (8) comprises a first transverse section and a first vertical section connected to one end of the first transverse section, the first transverse section extends to the main board (2) in a direction close to the board surface of the main board (2), the other end of the first transverse section is connected to the microphone core (6), and the first vertical section extends along the board surface of the main board (2) in a direction away from the microphone core (6) and is connected to the microphone core connection position (24).

4. The microphone according to claim 2, characterized in that The transmitting antenna (4) is arranged opposite to the surface of the main board (2), and in the length direction of the microphone, the microphone core (6) is arranged close to the bottom side of the transmitting antenna (4).

5. The microphone according to claim 1, characterized in that The microphone further comprises a battery (5) and a battery lead (7); a battery connection position (23) is also provided on the main board (2); the battery (5) is electrically connected to the battery connection position (23) via the battery lead (7) to jointly form a battery parasitic antenna; the length of the battery parasitic antenna is greater than or less than the length of the transmitting antenna (4).

6. The microphone according to claim 5, characterized in that The battery (5) and the transmitting antenna (4) are arranged opposite to the surface of the main board (2) and are arranged in sequence along the length direction of the microphone; the battery (5) has a power supply end and an end that are arranged opposite to each other in the length direction of the microphone, and the power supply end is connected to the battery lead (7).

7. The microphone according to claim 6, characterized in that The battery lead (7) comprises a second transverse section and a second vertical section connected to one end of the second transverse section, the second transverse section extending to the main board (2) in a direction close to the board surface of the main board (2), the other end of the second transverse section being connected to the power supply end of the battery (5), and the second vertical section extending along the board surface of the main board (2) and connected to the battery connection position (23).

8. The microphone according to claim 7, characterized in that The power supply end is arranged away from the transmitting antenna (4), and the second vertical section extends along the main board (2) towards a side close to the transmitting antenna (4).

9. The microphone according to claim 7, characterized in that The power supply end is arranged close to the transmitting antenna (4), a feeding area (43) connected to the main board (2) is arranged on the transmitting antenna (4), and the second vertical section extends along the main board (2) toward a side close to the feeding area (43) or toward a side away from the feeding area (43).

10. The microphone according to claim 5, characterized in that The battery (5) and the main board (2) are arranged in parallel and spaced apart. In the length direction of the microphone, the battery (5) is located on a side of the transmitting antenna (4) away from the microphone core (6).

11. The microphone according to claim 10, characterized in that The battery (5) is in the shape of an elongated strip, and / or the main board (2) is in the shape of an elongated plate.

12. The microphone according to any one of claims 1 to 11, characterized in that The microphone further comprises a bracket (1), and the transmitting antenna (4), the microphone core (6) and the main board (2) are fixed on the bracket (1).

13. The microphone according to claim 12, characterized in that The bracket (1) comprises a first bracket (11) and a second bracket (12) arranged along the length direction of the microphone, the transmitting antenna (4) and the main board (2) are fixed on the first bracket (11), and the microphone core (6) is fixed on the second bracket (12).

14. The microphone according to claim 12, characterized in that The transmitting antenna (4) comprises a first antenna segment, a second antenna segment and a third antenna segment which are connected in sequence, the first antenna segment, the second antenna segment and the third antenna segment are respectively attached to adjacent side surfaces of the bracket (1), the first antenna segment and the third antenna segment are arranged opposite to each other, and the mainboard (2) is attached to the side surface of the bracket (1) opposite to the second antenna segment.

15. The microphone according to claim 12, characterized in that The transmitting antenna (4) comprises a low-frequency transmitting antenna (41) and a high-frequency transmitting antenna (42); the length of the low-frequency transmitting antenna (41) is greater than the length of the high-frequency transmitting antenna (42); the length of the microphone core parasitic antenna is greater than the length of the low-frequency transmitting antenna (41); or the length of the microphone core parasitic antenna is less than the length of the high-frequency transmitting antenna (42).

16. The microphone according to claim 15, characterized in that The low-frequency transmitting antenna (41) is continuously bent along the surface of the bracket (1); and the high-frequency transmitting antenna (42) is extended in a straight line along the surface of the bracket (1).

17. The microphone according to any one of claims 1 to 11, characterized in that The microphone further comprises a charging interface (9), and the charging interface (9) is mounted on an end of the mainboard (2) away from the microphone core (6).

18. The microphone according to any one of claims 1 to 11, characterized in that The microphone further comprises a power button (22) and a function button (21), wherein the power button (22) and the function button (21) are mounted on the main board (2), and in the length direction of the microphone, the power button (22) and the function button (21) are arranged directly opposite to or close to the transmitting antenna (4).

19. The microphone according to any one of claims 1 to 11, characterized in that The microphone further comprises a metal mesh cover (3), wherein the metal mesh cover (3) is arranged on the outer side of the microphone core (6), and a grounding area (61) is arranged on the metal mesh cover (3), and the grounding area (61) is electrically connected to a ground wire on the mainboard (2).

20. A vehicle, characterized in that: A microphone comprising the microphone according to any one of claims 1 to 19.

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