Multi-band vehicle-mounted antenna and automobile antenna device

Abstract

The invention discloses a multi-band vehicle-mounted antenna and an automobile antenna device, and relates to the technical field of vehicle-mounted antennae, and the multi-band vehicle-mounted antenna is characterized in that the bottom of a shark fin shell is connected with a base to form a closed accommodating space; the light guide assembly is arranged in the accommodating space; the light guide assembly comprises a lens and a guide pipe, the lens is used for sealing the through hole, and the guide pipe and the lens are separated by a movable isolation piece. The light guiding assembly is arranged on the inclined face of the shark fin shell so as to ensure that sunlight on the two sides and the back face of a vehicle can be refracted by the lens and reflected by the guiding pipe to irradiate the light sensing unit. The shark fin shell and the base can ascend and descend, in the moving process of the vehicle, the shark fin shell ascends, the temperature in the shark fin shell is driven through airflow flowing, so that heat exchange is achieved, the temperature in the shark fin shell is reduced, and the influence of the temperature on the dielectric substrate is reduced.

Description

Technical Field

[0001] The present invention relates to the technical field of vehicle antennas, and particularly to a multi-band vehicle antenna and an automotive antenna device. Background Art

[0002] Modern vehicles are typically equipped with a solar radiation intensity sensor provided for measuring the intensity of solar radiation incident on the vehicle. For example, the measured solar radiation intensity can be used to automatically control the functions of the vehicle climate control system. Conventional solar radiation intensity sensors typically employ a light detection element (e.g., a photodiode) disposed adjacent to the inner surface of the vehicle windshield, where solar radiation entering the windshield can be received. For example, the solar radiation intensity sensor is typically located on the vehicle dashboard or within the vehicle rearview mirror housing.

[0003] There are many drawbacks associated with conventionally positioned solar radiation intensity sensors. For example, a significant amount of solar radiation incident on the sides, rear, and / or top of the vehicle may be blocked by the vehicle body and prevented from being received by the solar radiation intensity sensor located on the dashboard or within the rearview mirror housing. This can result in inaccurate measurements of the solar radiation entering the vehicle cab, which in turn can lead to improper operation of the vehicle climate control system. Summary of the Invention

[0004] An object of the present invention is to provide a multi-band vehicle antenna and an automotive antenna device, having a light guiding assembly disposed on an inclined surface of a shark fin housing to ensure that sunlight rays located on both sides and the back of the vehicle can be refracted by a lens and reflected by a guiding tube to irradiate a light sensing unit. The shark fin housing and the base can be lifted and lowered. During vehicle movement, the shark fin housing rises, and the temperature inside the shark fin housing is driven by the airflow to achieve heat exchange, reducing the temperature inside the shark fin housing to reduce the influence of temperature on the dielectric substrate.

[0005] To achieve the above object, the present invention provides the following technical solution: A multi-band vehicle antenna, comprising:

[0006] A shark fin housing, the bottom of the shark fin housing being connected to a base to form a closed accommodation space;

[0007] A dielectric substrate, the dielectric substrate being assembled on the base;

[0008] An antenna assembly, the antenna assembly being integrated on the dielectric substrate and provided with at least two types of antennas;

[0009] A light guiding assembly, the light guiding assembly being disposed within the accommodation space, and through holes corresponding to the number of light guiding assemblies being formed in the shark fin housing;

[0010] The light guiding component includes a lens and a guiding tube, and the lens is used to seal the through hole;

[0011] The light radiation intensity detection component includes a detection cylinder and a light sensing unit. The detection cylinder is installed on the dielectric substrate, the light sensing unit is placed on the dielectric substrate inside the detection cylinder, and the other end of the guiding tube is connected into the detection cylinder;

[0012] Sunlight is refracted by the lens and then totally reflected by the guiding tube and irradiated on the light sensing unit. The wire connected to the light sensing unit is soldered to the dielectric substrate.

[0013] Further, the antenna assembly includes at least one or several of 3G / 4G / 5G antennas, GNSS navigation antennas, AM / FM antennas, V2X antennas, DAB antennas, and Wifi / BT antennas.

[0014] Further, an optical film layer is provided on the inner wall of the guiding tube for reflecting sunlight.

[0015] Further, there are no less than two through holes, and two of the through holes are provided on the inclined planes on both sides of the shark fin housing.

[0016] Further, a detection cavity with an optical film layer on its inner wall is provided in the detection cylinder. Among them, the detection cavity is used for the guiding tube to be inserted, the detection cylinder covers the light sensing unit, and photosensitive areas corresponding to the number of detection cavities are divided on the light sensing unit.

[0017] Further, a section of the guiding tube provided on the inclined planes on both sides of the shark fin housing is a quarter-round tube, and the optical path passing through the lens is irradiated on the photosensitive area of the light sensing unit after being reflected by the guiding tube and the detection cavity.

[0018] Further, the wire harness plug electrically connected to the dielectric substrate is connected to the wire harness socket in the vehicle. Among them, the wire harness socket passes through the height adjustment component and is fixed in the vehicle. The height adjustment component is used to drive the shark fin housing and the base to rise or fall synchronously. When the shark fin housing and the base rise, an air flow channel for dissipating heat from the dielectric substrate and the light sensing unit is formed between the base and the vehicle roof.

[0019] Further, the wire harness socket is electrically connected to the vehicle center console through a wire harness, and the electromagnetic signal received by the antenna assembly and the optical signal received by the light sensing unit are transmitted to the vehicle center console.

[0020] Furthermore, the height adjustment component includes a lock sleeve, an inner lifting sleeve, an outer lifting sleeve, and a diversion block. The lock sleeve is fixed to the base. The diversion block is fixed to the outer wall of the outer lifting sleeve fixed inside the vehicle. The outer lifting sleeve passes through the roof of the vehicle and penetrates into the lock sleeve together with the diversion block. The inner lifting sleeve penetrates into the outer lifting sleeve and is connected to the threaded plate. The threaded plate rotates around the outer lifting sleeve. The threaded plate is also threadedly connected to the lock sleeve. The threaded plate is controlled by a drive structure inside the vehicle to rotate, so as to drive the lock sleeve to lift along the outer lifting sleeve and the diversion block.

[0021] An automotive antenna device includes a multi-band vehicle-mounted antenna.

[0022] The technical effects and advantages of the present invention are as follows:

[0023] 1. For the multi-band vehicle-mounted antenna, the light guiding component is arranged on the inclined surface of the shark fin housing to ensure that the sunlight rays located on both sides and the back of the vehicle can be refracted by the lens and reflected by the guiding tube and then irradiate on the light sensing unit. Cooperating with the light sensing unit under the front glass, it realizes the detection of the light intensity of sunlight at any position during the day, and at the same time avoids the problems of the aging of the dielectric substrate and the damage of the circuit caused by the long-term irradiation of sunlight.

[0024] 2. The shark fin housing and the base can be lifted. During the process when the vehicle is not moving, there is no need to detect the light radiation intensity. The shark fin housing and the base are attached to the roof of the vehicle, avoiding the sunlight being reflected by the roof and irradiating on the base to increase the temperature inside the shark fin housing.

[0025] During the vehicle movement, the shark fin housing rises, and an air flow channel is formed between the base and the roof of the vehicle. At this time, the air flow generated during the vehicle movement will flow along the shark fin housing and the base, driving the temperature inside the shark fin housing through the air flow movement to achieve heat exchange, reducing the temperature inside the shark fin housing, so as to reduce the influence of temperature on the dielectric substrate. Description of the Drawings

[0026] Figure 1 It is the overall top view structure diagram of the present invention;

[0027] Figure 2 It is the overall side view structure diagram of the present invention;

[0028] Figure 3 It is the exploded view of the present invention;

[0029] Figure 4 It is the path diagram of the sunlight passing through the lens refraction and reflecting in the guiding tube of the present invention;

[0030] Figure 5 It is the internal structure diagram of the shark fin housing of the present invention;

[0031] Figure 6Structural diagram of Embodiment 2 of the present invention;

[0032] Figure 7 Exploded view of the height adjustment component of the present invention;

[0033] Figure 8 Connection diagram of the spacer, lens and guide tube in Embodiment 4 of the present invention.

[0034] In the figure:

[0035] 1. Shark fin housing; 2. Base; 3. Dielectric substrate; 31. Harness plug; 4. Antenna assembly; 5. Light guiding assembly; 51. Lens; 52. Guide tube; 6. Light radiation intensity detection component; 61. Detection cylinder; 62. Light sensing unit; 7. Height adjustment component; 71. Lock sleeve; 72. Inner lifting sleeve; 73. Outer lifting sleeve; 74. Flow guiding block; 75. Threaded plate; 8. Spacer; 9. Harness socket. Detailed implementation manners

[0036] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0037] To better understand the multi-band vehicle antenna and vehicle antenna device provided in this embodiment, first, a brief introduction to the existing vehicle antenna will be given below. To solve the problem that a large amount of solar radiation on the side, rear and / or top of the vehicle may be blocked by the vehicle body, the prior art integrates a light radiation intensity detection device into the antenna. In order to allow sunlight to irradiate on the light radiation intensity detection device in the antenna, an antenna housing made of a light-transmitting material is selected. As a result, sunlight not only irradiates on the light radiation intensity detection device, but also directly irradiates on the circuit board inside the antenna. Prolonged irradiation of sunlight on the circuit board is likely to cause the circuit board to age, resulting in problems such as short circuits and open circuits, thereby affecting the transmission of optical signals and electromagnetic signals.

[0038] Embodiment 1: Refer to Figures 1-3 , which is the first embodiment of the present invention. To achieve the above object, the present invention provides the following technical solutions: A multi-band vehicle antenna, comprising:

[0039] A shark fin housing 1, the bottom of the shark fin housing 1 is connected to the base 2 to form a closed accommodation space;

[0040] A dielectric substrate 3, the dielectric substrate 3 is assembled on the base 2;

[0041] An antenna assembly 4 is integrated on a dielectric substrate 3 and is provided with at least two types of antennas.

[0042] The antenna assembly 4 includes at least one or several of a 3G / 4G / 5G antenna, a GNSS navigation antenna, an AM / FM antenna, a V2X antenna, a DAB antenna, and a Wifi / BT antenna.

[0043] The matching operating frequency bands include 2G, 3G, 4G, and 5G frequency bands. The operating frequency band is Wi-Fi, which can be compatible with the V2X operating frequency band. The GNSS navigation antenna is used to position the vehicle, and the DAB antenna is used for digital radio reception.

[0044] A light guiding component 5 is arranged in the accommodation space. Through holes corresponding to the number of the light guiding components 5 are formed on the shark fin housing 1. The light guiding component 5 includes a lens 51 and a guiding tube 52. The lens 51 is used to seal the through hole.

[0045] The lens 51 provided therein can be a biconvex lens, a plano-convex lens, etc. By setting the curvature and material of the lens 51, the focal length of the lens 51 is shortened so that sunlight can still shine on the lens 51 after passing through the focus, thereby changing the path of the sunlight.

[0046] It is arranged on the inclined surface of the shark fin housing 1. When the vehicle is moving, the air flow passes through the inclined surface of the shark fin housing 1. The air flow quickly passes through the shark fin housing 1, thereby being able to carry away the dust on the surface of the lens 51, keeping the surface of the lens 51 clean, and avoiding the influence of dust accumulation on the numerical detection of the light radiation intensity.

[0047] Refer to Figure 4 , the light radiation intensity detection component 6 includes a detection cylinder 61 and a light sensing unit 62. The detection cylinder 61 is installed on the dielectric substrate 3. The light sensing unit 62 is placed on the dielectric substrate 3 inside the detection cylinder 61. The other end of the guiding tube 52 is inserted into the detection cylinder 61. The wire harness socket 9 is electrically connected to the vehicle center console through a wire harness. The electromagnetic signal received by the antenna assembly 4 and the light signal received by the light sensing unit 62 are transmitted to the vehicle center console.

[0048] An optical film layer is provided on the inner wall of the guiding tube 52 for reflecting sunlight.

[0049] The through holes are provided in not less than two places, and two of the through holes are provided on the inclined surfaces on both sides of the shark fin housing 1.

[0050] A detection cavity with an optical film layer on its inner wall is formed in the detection cylinder 61. Among them, the detection cavity is used for the guiding tube 52 to be inserted. The detection cylinder 61 covers the light sensing unit 62, and photosensitive areas corresponding to the number of the detection cavities are defined on the light sensing unit 62.

[0051] A section of the guide tube 52 disposed on the inclined surfaces on both sides of the shark fin housing 1 is a quarter-circular tube. The light path passing through the lens 51 passes through the guide tube 52 and the detection cavity and then irradiates the photosensitive area of ​​the light sensing unit 62.

[0052] The light guiding assembly 5 is arranged on both side surfaces of the shark fin housing 1 , and except for the sunlight located in front of the vehicle, the sunlight located on both sides and the back of the vehicle can be irradiated on the lens 51 .

[0053] like Figure 4 As shown, F is the focal length of the lens, O is the center of the lens, and the sunlight is irradiated as parallel light, so the parallel light is irradiated on the inclined lens 51, and the focal length of the lens 51 is set shorter, so that light from more angles in a day can pass through the focus and still shine on the lens 51. Since the lens 51 is tilted, the vertically irradiated sunlight can still pass through the focus of the lens 51 and shine on the lens 51. Due to the working principle of the lens 51, the light passing through the focus of the lens 51 will be refracted at an angle perpendicular to the lens 51, and the light at a distance maintained with the focal length will also be refracted by the lens 51 and then shot into the guide tube 52 as a light perpendicular to the lens 51. After the rest of the light is refracted by the lens 51, a part is reflected multiple times by the guide tube 52 and emitted out of the antenna, and a part is irradiated on the light sensing unit 62.

[0054] Among them, multiple beams of sunlight perpendicular to the lens 51 are also vertically reflected after passing through the quarter-circular tube and illuminate the light sensing unit 62, so as to ensure that the sunlight on both sides and the back of the vehicle can be refracted by the lens 51 and reflected by the guide tube 52 to illuminate the light sensing unit 62. In conjunction with the light sensing unit 62 under the front glass, the light intensity detection of sunlight at any position during the day can be realized.

[0055] The guide tube 52 and the detection tube 61 are not only used to reflect light, but also to shield light, so that sunlight can only be in the guide tube 52 and the detection tube 61 and cannot be irradiated on the dielectric substrate 3, thereby avoiding the problem of aging of the dielectric substrate 3 and damage to the circuit caused by long-term exposure to sunlight.

[0056] Example 2: Reference Figures 5-7 , which is the second embodiment of the present invention. This embodiment is different from the first embodiment. During the implementation of the first embodiment, it is found that since the sunlight is only irradiated in the guide tube 52 and the detection tube 61, and the diameter of the guide tube 52 and the detection tube 61 does not exceed 15 cm, the overall tube diameter length is small, and the temperature of the guide tube 52 and the detection tube 61 will increase rapidly after being irradiated by sunlight, and high temperature will also affect the service life of the dielectric substrate 3.

[0057] The wire harness plug 31 electrically connected to the dielectric substrate 3 is connected to the wire harness socket 9 inside the vehicle. After the wire harness plug 31 and the wire harness socket 9 are connected, they are used to transmit the optical signal and electromagnetic signal of the dielectric substrate 3 to the center console. Among them, the wire harness socket 9 passes through the height adjustment component 7 and is fixed inside the vehicle. The height adjustment component 7 is used to drive the shark fin housing 1 and the base 2 to rise or fall synchronously. When the shark fin housing 1 and the base 2 rise, an air flow channel for dissipating heat from the dielectric substrate 3 and the light sensing unit 62 is formed between the base 2 and the vehicle roof.

[0058] During the movement of the vehicle, the shark fin housing 1 rises, and an air flow channel is formed between the base 2 and the vehicle roof. The sunlight is refracted by the lens 51 and then totally reflected by the guiding tube 52 and irradiated on the light sensing unit 62. The wire connected to the light sensing unit 62 is soldered to the dielectric substrate 3;

[0059] At this time, the air flow generated during the movement of the vehicle will flow along the shark fin housing 1 and the base 2, driving the temperature inside the shark fin housing 1 through the air flow to achieve heat exchange, reducing the temperature inside the shark fin housing 1, and reducing the influence of temperature on the dielectric substrate 3;

[0060] The height adjustment component 7 is driven according to whether the vehicle is moving. The height adjustment component 7 includes a lock sleeve 71, an inner lifting sleeve 72, an outer lifting sleeve 73, and a diversion block 74. The lock sleeve 71 is fixed on the base 2, and the diversion block 74 is fixed on the outer wall of the outer lifting sleeve 73 fixed inside the vehicle. The outer lifting sleeve 73 passes through the vehicle roof and penetrates into the lock sleeve 71 together with the diversion block 74. The inner lifting sleeve 72 penetrates into the outer lifting sleeve 73 and is connected to the threaded plate 75. The threaded plate 75 rotates around the outer lifting sleeve 73, and the threaded plate 75 is also threadedly connected to the lock sleeve 71. The threaded plate 75 is controlled by a driving structure inside the vehicle to rotate, so as to drive the lock sleeve 71 to rise and fall along the outer lifting sleeve 73 and the diversion block 74.

[0061] The outer lifting sleeve 73 is used to seal the assembly hole on the vehicle roof to prevent rainwater from flowing into the vehicle through the assembly hole;

[0062] The driving structure for driving the threaded plate 75 to move can adopt a motor, a gear, and a gear ring drive according to requirements (since it is a common technology, it is shown in the drawings but not labeled). Among them, the motor is assembled inside the vehicle, the shaft connected to the motor penetrates into the inner lifting sleeve 72 and is connected to the gear, and the gear ring is fixed on the inner lifting sleeve 72. The motor drives the gear to rotate, thereby driving the inner lifting sleeve 72 to rotate. The inner lifting sleeve 72 and the threaded plate 75 rotate around the outer lifting sleeve 73 synchronously. During the rotation of the threaded plate 75, the lock sleeve 71 will move up and down reciprocally along the diversion block 74; thus, the shark fin housing 1 and the base 2 are raised or lowered.

[0063] The flow guiding block 74 not only plays a guiding role but also serves the purpose of guiding the flow. During the process of the lock sleeve 71 moving upward to drive the shark fin housing 1 and the base 2 to move upward synchronously, an air flow channel is formed. The flow guiding direction of the flow guiding block 74 can guide the air flow to flow through the windward surface of the outer lifting sleeve 73 and then along the flow guiding block 74 into the air flow channel, avoiding the turbulent flow of the air flow passing through the two sides of the outer lifting sleeve 73 on the leeward surface of the outer lifting sleeve 73.

[0064] Embodiment 3: This is the third embodiment of the present invention. This embodiment is different from the second embodiment. During the implementation of the second embodiment, it was found that heat dissipation can only be carried out when the vehicle is moving. When the vehicle is in a stationary state, effective heat dissipation cannot be achieved. Therefore, a glass that can change color is installed in the guiding tube 52 inside the lens 51:

[0065] The color-changing glass is controlled by the vehicle control. The color-changing glass of this structure is controlled by current conditions, changes color under the action of current, and changes accordingly with the change of conditions. When the vehicle starts, the color-changing glass becomes transparent so that light can pass through, and when the vehicle stops, the glass turns black to reduce the light transmittance, so as to reduce the temperature rising speed;

[0066] Embodiment 4: Refer to Figure 8 , which is the fourth embodiment of the present invention. This embodiment is different from the third embodiment. A movable isolation sheet 8 is provided between the lens 51 and the guiding tube 52;

[0067] The isolation sheet 8 is composed of an opaque reflective part and a transparent light-transmitting part. During the process of the vehicle stopping, the isolation sheet 8 moves under the push of a power device (such as a cylinder, a lead screw, etc.), and the reflective part of the isolation sheet 8 moves to seal the channel between the lens 51 and the guiding tube 52 and stops. The sunlight cannot irradiate from the lens 51 into the guiding tube 52, so as to reduce the temperature rise inside the shark fin housing 1 while the base 2 contacts the vehicle roof, avoiding the sunlight being reflected by the vehicle roof and irradiating on the base 2 to increase the temperature inside the shark fin housing 1;

[0068] During the process of the vehicle starting, the isolation sheet 8 moves under the action of a power device (such as a cylinder, a lead screw, etc.), and the light-transmitting part is aligned with the channel between the lens 51 and the guiding tube 52, and the sunlight passes through the lens 51 and irradiates into the guiding tube 52 to realize the detection of light.

[0069] An automotive antenna device, including a multi-band vehicle antenna.

[0070] Finally, it should be noted that the above are only preferred embodiments of the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or perform equivalent replacements for some of the technical features. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. Multi-band vehicle-mounted antenna, characterized in that: include: A shark fin housing (1), wherein the bottom of the shark fin housing (1) is connected to the base (2) to form a closed accommodating space; A dielectric substrate (3), wherein the dielectric substrate (3) is mounted on the base (2); An antenna component (4), the antenna component (4) being integrated on a dielectric substrate (3) and provided with at least two types of antennas; A light guide component (5), the light guide component (5) being arranged in the accommodation space, and the shark fin housing (1) being provided with through holes corresponding in number to the light guide components (5); The light guide assembly (5) comprises a lens (51) and a guide tube (52), wherein the lens (51) is used to seal the through hole; The light radiation intensity detection component (6) comprises a detection tube (61) and a light sensing unit (62), wherein the detection tube (61) is mounted on the dielectric substrate (3), the light sensing unit (62) is placed on the dielectric substrate (3) inside the detection tube (61), and the other end of the guide tube (52) is connected to the detection tube (61); After being refracted by the lens (51), the sunlight is totally reflected by the guide tube (52) and irradiates the light sensing unit (62). The wire connected to the light sensing unit (62) is soldered to the dielectric substrate (3).

2. The multi-band vehicle-mounted antenna according to claim 1, characterized in that: The antenna assembly (4) comprises at least one or more of a 3G / 4G / 5G antenna, a GNSS navigation antenna, an AM / FM antenna, a V2X antenna, a DAB antenna, and a Wifi / BT antenna.

3. The multi-band vehicle-mounted antenna according to claim 1, characterized in that: An optical film layer is arranged on the inner wall of the guide tube (52) for reflecting sunlight.

4. The multi-band vehicle-mounted antenna according to claim 1, characterized in that: No less than two through holes are provided, wherein two through holes are provided on the inclined surfaces on both sides of the shark fin shell (1).

5. The multi-band vehicle-mounted antenna according to claim 1, characterized in that: A detection cavity with an inner wall provided with an optical film layer is provided in the detection tube (61), wherein the detection cavity is used for inserting the guide tube (52), the detection tube (61) covers the light sensing unit (62), and the light sensing unit (62) is divided into photosensitive areas corresponding to the number of detection cavities.

6. The vehicle antenna device according to claim 1, characterized in that: A section of the guide tube (52) arranged on the inclined surfaces on both sides of the shark fin housing (1) is a quarter-circular tube. The light path passing through the lens (51) passes through the guide tube (52) and the detection cavity, and then irradiates the photosensitive area of ​​the light sensing unit (62).

7. The multi-band vehicle-mounted antenna according to claim 1, characterized in that: The harness plug (31) electrically connected to the dielectric substrate (3) is connected to a harness socket (9) in the car, wherein the harness socket (9) is fixed in the car through a height adjustment component (7), and the height adjustment component (7) is used to drive the shark fin shell (1) and the base (2) to rise or fall synchronously. When the shark fin shell (1) and the base (2) rise, an air flow channel for dissipating heat for the dielectric substrate (3) and the light sensing unit (62) is formed between the base (2) and the car roof.

8. The multi-band vehicle-mounted antenna according to claim 7, characterized in that: The wiring harness socket (9) is electrically connected to the vehicle center console via the wiring harness, and the electromagnetic signal received by the antenna assembly (4) and the optical signal received by the light sensing unit (62) are transmitted to the vehicle center console.

9. The vehicle antenna device according to claim 7, characterized in that: The height adjustment component (7) comprises a locking sleeve (71), an inner lifting sleeve (72), an outer lifting sleeve (73) and a guide block (74); the locking sleeve (71) is fixed on the base (2); the guide block (74) is fixed on the outer wall of the outer lifting sleeve (73) in the vehicle; the outer lifting sleeve (73) passes through the roof and is inserted into the locking sleeve (71) together with the guide block (74); the inner lifting sleeve (72) is inserted into the outer lifting sleeve (73) and is connected to a threaded plate (75); the threaded plate (75) rotates around the outer lifting sleeve (73); the threaded plate (75) is also threadedly connected to the locking sleeve (71); the threaded plate (75) is controlled by a driving structure in the vehicle to rotate so as to drive the locking sleeve (71) to rise and fall along the outer lifting sleeve (73) and the guide block (74).

10. A car antenna device, characterized in that: It comprises the multi-band vehicle-mounted antenna as described in any one of claims 1 to 9.

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