JP2016063416A - Noise cancellation mechanism - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a noise cancellation mechanism capable of preventing noise that is generated in a radar device, from being propagated to an antenna.SOLUTION: A noise cancellation mechanism 10 is configured by forming a noise cancellation wire (noise cancellation part) 11 which is formed from a wire-like conductive member electrically separated from an antenna 30 between the antenna 30 on a fitting surface 3A of a window panel 3, for example, and a radar device 20. Thus, most of noise generated in the radar device 20 is made incident to the noise cancellation wire 11 that is brought into a ground potential via a grounding side terminal 15, grounded and discharged before being made incident to the antenna 30 along the fitting surface 3A of the window panel 3. Thus, noise to be propagated in the window panel 3 and reach the antenna 30 is significantly reduced, and performance reduction of the antenna can be surely suppressed.SELECTED DRAWING: Figure 3

Description

  The present invention relates to a noise removal mechanism for removing noise generated by a radar device formed on a window panel.

  Conventionally, an antenna provided on a window glass of a vehicle is known. This antenna is provided, for example, for receiving broadcast waves from radios, televisions, etc., and for mobile communication. For example, Patent Document 1 discloses a vehicle in which a transmission / reception antenna is formed on the surface of a vehicle window glass. Such an antenna is formed, for example, by forming a linear conductor in a predetermined pattern on the surface of a window glass.

  On the other hand, in recent years, a radar device for measuring an inter-vehicle distance is sometimes installed on a window glass (front glass) of a vehicle as an optical sensor of a collision prevention device or an automatic driving device. For example, in Patent Document 2, a radar device sensor is provided on the inner surface of a window glass, and a laser beam such as infrared rays is emitted toward the outside of the vehicle through the window glass, and the reflected laser beam is received. Is disclosed.

Japanese Utility Model Publication No. 63-49932 Japanese Patent Laid-Open No. 9-188133

  If the antenna and the radar device described above are arranged close to each other, noise generated in the radar device may be input to the antenna. However, in many cases, it is difficult to dispose these antennas and radar devices sufficiently apart from each other due to the layout of the in-vehicle device. For this reason, the noise generated in the radar device may cause noise or image disturbance during reception of radio or television, or may disturb audio or data during mobile communication.

  In particular, when the antenna and the radar device are arranged close to each other on the same window glass, noise generated in the radar device propagates through the window glass and is easily input to the antenna. For this reason, even if an antenna and a radar apparatus are arranged close to each other, a structure that can suppress the noise generated in the radar apparatus from propagating to the antenna is desired.

  The present invention has been made in view of such a problem, and an object of the present invention is to provide a noise removal mechanism capable of suppressing noise generated in a radar device from propagating to an antenna.

In order to solve the above problems and achieve the object, the present invention employs the following aspects.
(1) A noise removal mechanism according to an aspect of the present invention is provided in a window panel (for example, the window opening 2 in the embodiment) that covers a window opening of a vehicle, the window panel, and disposed in the vehicle. An antenna (for example, the antenna 30 in the embodiment) for transmitting and receiving signals between the apparatus and an external device, and a radar apparatus (for example, for monitoring the periphery of the vehicle) attached to the mounting surface of the window panel A radar device 20) in the embodiment, and a noise removing portion (for example, the noise removal line 11 in the embodiment) made of a conductive member for removing noise caused by the radar device on the mounting surface. Is characterized by being electrically separated.

  (2) In the noise removal mechanism according to (1), the window panel includes a transmission surface (for example, the transmission surface 3P in the embodiment) that can transmit a radar wave transmitted and received by the radar device, and the noise removal. The portion is made of a linear conductive member, and includes a peripheral line (for example, the peripheral line 12 in the embodiment) surrounding the entire outer edge of the transmission surface, and the antenna is located outside a region surrounded by the peripheral line. It is provided.

  (3) In the noise removal mechanism described in (2) above, the transmission surface transmits a transmission-side transmission region that transmits a transmission wave output from the radar device (for example, the transmission-side transmission region 3PA in the embodiment); A reception-side transmission region (for example, the reception-side transmission region 3PB in the embodiment) that transmits a reception wave input to the radar device, and the noise removing unit includes the transmission-side transmission region and the reception-side transmission region. In addition to partitioning, a partition line (for example, the partition line 13 in the embodiment) electrically connected to the peripheral line on one end side and the other end side is provided.

  (4) In the noise removal mechanism according to any one of (1) to (3), the radar device is bonded to an adhesive portion (for example, an adhesive portion 3D in the embodiment) of the mounting surface, The noise removing part is formed so as to surround the periphery of the adhesive part.

  (5) In the noise removal mechanism according to (4), the noise removal portion is formed at a position that does not overlap with the adhesion portion.

  (6) In the noise removal mechanism according to any one of (2) to (5), the noise removal unit extends outward from a region surrounded by the peripheral line, and extends to the peripheral line. An extension line (for example, extension line 14 in the embodiment) that is electrically connected is provided.

  According to the invention described in (1), since the noise removing unit made of a conductive member is provided so as to be electrically separated from the antenna, noise generated due to the operation of the radar device is input to the noise removing unit. Is done. As a result, it is possible to suppress the propagation of noise to the antenna and input it, and it is possible to reliably suppress the degradation of the antenna performance.

  According to the invention described in (2), the noise removing portion is formed of a linear conductive member, and the peripheral line is formed so as to surround the entire transmission surface of the window panel, thereby allowing the window panel to pass through the radar wave of the radar device. This prevents the noise that has acted on the transparent surface from coming out of the area surrounded by the surrounding line. This makes it possible to more reliably suppress noise from propagating to the antenna.

According to the invention described in (3), the transmission side transmission is formed by forming the dividing line that constitutes the noise removing unit so as to separate the transmission side transmission region and the reception side transmission region of the transmission surface of the window panel. Each of the area and the reception side transmission area can be individually surrounded by a noise removing unit. As a result, the noise that has acted on the transmission surface of the window panel through the radar wave of the radar device is more reliably suppressed from escaping outside from the transmission side transmission region and the reception side transmission region, and the noise is propagated to the antenna. Can be prevented.
Further, by dividing adjacent portions of the transmission-side transmission region and the reception-side transmission region by a single dividing line, each region can be surrounded, so that the layout of the noise removal unit is simplified to facilitate formation. be able to.

  According to the invention described in (4), the noise removing portion is formed so as to surround the periphery of the adhesion portion for attaching the radar device to the attachment surface of the window panel, so that the window panel is passed through the adhesion portion from the radar device. It is possible to reliably suppress the noise propagating in the direction of the antenna from spreading through the window panel.

  According to the invention described in (5), the noise removing portion is formed at a position where it does not overlap with the bonding portion, that is, a position avoiding the bonding portion, thereby reducing the bonding strength between the radar device and the window panel. Without bringing about this, it is possible to more reliably suppress the propagation of noise toward the antenna.

  According to the invention described in (6), the extension line constituting the noise removing unit is formed to extend outward from the region surrounded by the surrounding line, thereby leaking outside the surrounding line. It is possible to input the noise to the extension line and reliably suppress the noise from propagating toward the antenna.

It is a principal part expansion perspective view which shows the vehicle provided with the noise removal mechanism which concerns on embodiment of this invention. It is a top view when a radar apparatus is seen from the indoor side. It is sectional drawing when the radar apparatus attached to the window panel is seen from the vehicle width direction. It is a top view when the part by which the radar apparatus and the antenna were provided in the window panel was seen from the exterior of a vehicle.

  The noise removal mechanism of the present invention will be described below with reference to the drawings. The following embodiments are specifically described for better understanding of the gist of the invention, and do not limit the present invention unless otherwise specified. In addition, in the drawings used in the following description, in order to make the features of the present invention easier to understand, there is a case where a main part is shown in an enlarged manner for convenience, and the dimensional ratio of each component is the same as the actual one. Not necessarily. In the following description, the front side in the traveling direction is simply referred to as the front side, the rear side in the traveling direction is simply referred to as the rear side, the upper side in the gravity direction is simply referred to as the upper side, and the lower side in the gravity direction is simply referred to as the lower side.

  FIG. 1 is a perspective view showing a part of the front side of a vehicle 1 provided with a noise removal mechanism 10 of the present embodiment. In the vehicle 1, a window opening 2 is formed on the front side in the front-rear direction L. A window panel (window glass, windshield) 3 is formed so as to cover the window opening 2. The window opening 2 is a substantially rectangular or substantially trapezoidal opening as viewed from the front-rear direction L defined by the front pillar 4 that supports the window panel 3.

A radar device 20, a noise removal mechanism 10, and an antenna 30 are formed on an attachment surface (inner surface, indoor surface) 3 </ b> A that forms the indoor surface of the window panel 3.
FIG. 2 is a plan view of the radar device 20 as viewed from the indoor side. FIG. 3 is a cross-sectional view of the radar device 20 as viewed from the vehicle width direction. The radar device 20 is formed, for example, near the upper center of the window panel 3. A rearview mirror mounting base 6 is formed in the vicinity of the radar device 20 mounting position of the window panel 3, and the rearview mirror is attached to the rearview mirror mounting base 6.

  For example, the radar apparatus 20 divides a detection range set in front of the vehicle 1 (external world) into a plurality of angle areas, and transmits radar waves (transmission waves) so as to scan each angle area. In the radar apparatus 20, each transmission signal is reflected by an object (for example, a pedestrian, another vehicle, and various stationary objects on the road surface or above the road surface) outside the vehicle 1. A radar wave (received wave), which is a reflected wave generated by this, is received. The radar device 20 detects a detection signal corresponding to a transmission wave and a reception wave, for example, a distance from the radar device 20 to an object, a position of the object (at least an azimuth angle and an elevation angle, etc.), and a relative speed of the object with respect to the vehicle 1. Such detection signals are generated, and these detection signals are output. The detection signal output from the radar device 20 is used for controlling, for example, a collision prevention device or an automatic driving device of the vehicle 1.

  In the present embodiment, the radar device 20 uses infrared rays (infrared rays) that are electromagnetic waves as transmission waves. For example, infrared rays having a wavelength range of 0.7 μm to 1000 μm are used as transmission waves. The electromagnetic wave used as the transmission wave of the radar device 20 can use, for example, visible light, ultraviolet light, ultrasonic waves, radio waves (short waves, millimeter waves), etc., other than infrared rays, and is not limited.

The radar device 20 supports a transmission unit 21 that transmits an infrared transmission wave, a reception unit 22 that receives a reception wave that is reflected from the front outside of the vehicle 1, and the transmission unit 21 and the reception unit 22. A blanket 23 and a cover 24 covering the blanket 23 are provided.
The transmission unit 21 includes, for example, an infrared light emitting element and a focusing lens. The receiving unit 22 includes an infrared light receiving element or a solid-state imaging element.

FIG. 4 is a plan view of a portion where the radar device 20 and the antenna 30 are provided on the window panel 3 when viewed from the outside of the vehicle 1. In FIG. 4, members observed through the window panel 3 are also indicated by solid lines.
The window panel (window glass, windshield) 3 includes a transmission surface 3P that can transmit radar waves (infrared rays in the present embodiment) transmitted and received by the radar device 20. The part which comprises the permeation | transmission surface 3P of the window panel 3 should just be comprised with the material same as the window panel 3 whole. Further, the portion constituting the transmission surface 3P of the window panel 3 is formed of a material having higher infrared transmittance than the peripheral portion thereof, or an antireflection film or the like for increasing the infrared transmittance is formed to form the transmission surface 3P. You can also

  The transmission surface 3 </ b> P of the window panel 3 includes a transmission-side transmission region 3 </ b> PA that is a part facing the transmission unit 21 and a reception-side transmission region 3 </ b> PB that is a part facing the reception unit 22. The transmission wave (infrared light, radar wave) transmitted from the transmission unit 21 is emitted from the transmission side transmission region 3PA toward the front outside of the vehicle 1. A received wave (reflected wave, infrared light) generated when the transmitted wave hits an object in front of the vehicle 1 is input to the receiving unit 22 from the receiving-side transmission region 3PB.

  The radar device 20 is attached to the window panel 3 by bonding the blanket 23 and the window panel 3 through an adhesive portion 3D formed on the attachment surface 3A of the window panel 3. For example, the bonding part 3D includes a portion on which an adhesive layer including an adhesive capable of bonding the casing of the radar device 20 and the glass constituting the window panel 3 is formed. The bonding part 3D is formed, for example, by applying an adhesive or applying an adhesive tape containing the adhesive.

The radar device 20 is attached by, for example, an upper center of the window panel 3, for example, in the vicinity of the room mirror mounting base 6 for attaching a room mirror (not shown) to the window panel 3, by the bonding portion 3 </ b> D.
In addition, the ceramic coating is given to the area | region in which the radar apparatus 20 and the room mirror mounting base 6 are formed among the window panels 3, for example.

  The antenna 30 is provided for receiving broadcast waves such as radio and television provided in the vehicle 1 and performing mobile communication. The antenna 30 typically receives broadcast waves such as ultra-shortwave broadcast (so-called FM radio broadcast), medium-wave broadcast (so-called AM radio broadcast), television broadcast, text multiplex broadcast, audio multiplex broadcast, and data multiplex broadcast. To do.

  The antenna 30 includes a grounded antenna element 30A used as an in-vehicle radio antenna, for example, a micro antenna or a whip antenna, and a radial 30B routed in a predetermined shape from the antenna element along the window panel 3. It has.

  The antenna 30 is grounded via the vehicle 1. The radial 30B that constitutes the antenna 30 is made of a conductor wire or a conductor film, and is made of, for example, a silver wire, a copper wire, or an aluminum wire that is insulated.

In the present embodiment, the antenna 30 is formed above the window panel (window glass, windshield) 3, for example, in the vicinity of the radar device 20. The radial 30 </ b> B of the antenna 30 is preferably formed on the outdoor side surface of the window panel 3.
By forming the antenna 30 on the upper portion of the window panel 3, the antenna 30 occupies a high ground height position in the vehicle 1, so that the installation height of the antenna element is also increased, particularly in the frequency band of ultra high frequency or higher. Signal strength can be increased.

  The noise removing mechanism 10 is formed at the mounting position of the radar device 20 on the mounting surface (inner surface) 3 </ b> A that forms the indoor side surface of the window panel 3. The noise removal mechanism 10 includes, for example, a noise removal line (noise removal unit) 11 formed between the antenna 30 and the radar device 20. The noise removal line (noise removal unit) 11 is made of a conductor wire or a conductor film similarly to the radial 30B constituting the antenna 30, and is made of, for example, a silver wire, a copper wire, or an aluminum wire that is insulation-coated.

  In the present embodiment, the noise removal line (noise removal unit) 11 includes a peripheral line 12, a dividing line 13, and an extension line 14. One end of the noise removal line 11 is connected to the ground-side terminal 15. The ground side terminal 15 is grounded via the vehicle 1, for example. As a result, the entire noise removal line 11 is set to the ground potential (ground potential, reference potential).

  The peripheral line 12 is formed so as to surround the entire outer edge (periphery, peripheral edge) of the transmission surface 3P of the window panel 3. More specifically, the peripheral line 12 is formed by arranging a conductor line or a conductor film constituting the noise removal line 11 so as to surround the outer edge of the transmission surface 3P of the window panel 3.

  Such a peripheral line 12 is formed on the mounting surface (inner surface, indoor side surface) 3A of the window panel 3. The peripheral line 12 may be formed so as to be completely along the outer edge of the transmission surface 3P, or may be formed at an arbitrary interval from the outer edge of the transmission surface 3P. Further, such a peripheral line 12 is formed inside the cover 24 of the radar device 20 when viewed from the outside (outdoor) of the window panel 3. The antenna 30 is arranged outside the peripheral line 12 on the mounting surface (inner surface, indoor surface) 3A of the window panel 3.

  The dividing line 13 is formed so as to separate the transmission-side transmission area 3PA and the reception-side transmission area 3PB in the transmission surface 3P of the window panel (window glass, windshield) 3, and the peripheral line 12 on one end side and the other end side. Are electrically connected. More specifically, the dividing line 13 includes a conductor line or a conductor film constituting the noise removal line 11 along a boundary portion between the transmission side transmission region 3PA and the reception side transmission region 3PB adjacent to each other. Become.

  The extension line 14 is formed to extend outward from the region surrounded by the peripheral line 12, and is electrically connected to the peripheral line 12. More specifically, the extension line 14 is provided with a conductor wire or a conductor film constituting the noise removal line 11 so as to form a rectangle outside the transmission surface 3P of the window panel (window glass, windshield) 3. Prepare things. Further, the extension wire 14 is provided with a plurality of linear conductor wires or conductor films having one end electrically opened. A part of the extension line 14 extends toward the ground side terminal 15 and is electrically connected to the ground side terminal 15.

The noise removal line 11 including the peripheral line 12, the dividing line 13, and the extension line 14 has a periphery of the bonding portion 3 </ b> D for attaching the radar device 20 to the attachment surface 3 </ b> A of the window panel (window glass, windshield) 3. Is formed so as to surround. In the present embodiment, the adhesion portion 3D formed near the outside of the transmission side transmission region 3PA is surrounded by a peripheral line 12 that constitutes the noise removal line 11. Further, the adhesive portion 3D formed on the outer upper side of the reception side transmission region 3PB is surrounded by an extension line 14 that constitutes the noise removal line 11.
The noise removal line 11 is formed at a position that does not overlap with the bonding portion 3D, that is, a position that avoids the bonding portion 3D.

The operation of the noise removal mechanism in the present embodiment having the above configuration will be described.
The radar device 20 generates noise, for example, burst noise, flicker noise, Johnson Nyquist noise (thermal noise), and the like during an operation such as transmitting infrared rays that are radar waves from the transmission unit 21. Such noise generated in the radar device 20 tends to propagate particularly along the window panel 3 (window glass, windshield) 3 to which the radar device 20 is attached.
In the noise removal mechanism 10 according to the present embodiment, noise generated by the operation of the radar device 20 is diffused around the radar device 20 and input (incident) to the antenna 30 provided in the vicinity of the radar device 20. Suppress.

  The noise removing mechanism 10 includes a noise removing line (noise removing portion) 11 made of a linear conductive member electrically separated from the antenna 30, for example, the antenna 30 and the radar device 20 on the mounting surface 3 </ b> A of the window panel 3. And formed between. As a result, most of the noise generated in the radar device 20 is set to the ground potential (ground potential) via the ground-side terminal 15 before entering the antenna 30 along the mounting surface 3A of the window panel 3. It enters the noise removal line 11 and is grounded. Thereby, the noise which propagates through the window panel 3 and reaches the antenna 30 is greatly reduced. Therefore, an antenna in which the noise generated in the radar device causes noise and / or video disturbance when a radio or television broadcast wave is received by the antenna 30, or audio or data is disturbed when performing mobile communication. It is possible to reliably suppress the performance degradation.

  Further, even if the radar device 20 and the antenna 30 are arranged close to each other by the noise removal mechanism 10, for example, the degradation of the antenna performance can be reliably suppressed, so that the radar device 20 and the antenna 30 are separated from each other. Layout restrictions such as placement are reduced, and the degree of freedom of placement of the radar device 20 and the antenna 30 is improved.

  Further, by forming the peripheral line 12 constituting the noise removal line 11 so as to surround the entire outer edge (periphery, peripheral edge) of the transmission surface 3P of the window panel 3, the transmission of the window panel 3 through the radar wave of the radar device 20 is achieved. The noise that has acted on the surface 3P is prevented from escaping from the area surrounded by the peripheral line 12 to the outside. As a result, it is possible to more reliably suppress noise from propagating to the antenna 30 and reaching it.

  Further, the dividing line 13 constituting the noise removal line 11 is formed so as to separate the transmission side transmission region 3PA and the reception side transmission region 3PB of the transmission surface 3P, thereby transmitting the transmission side transmission region 3PA and the reception side transmission region. Each 3PB can be individually surrounded by a noise removal line 11. As a result, the noise that has acted on the transmission surface 3P of the window panel 3 through the radar wave of the radar device 20 is more reliably prevented from coming out of the transmission side transmission region 3PA and the reception side transmission region 3PB. As a result, it is possible to more reliably suppress the noise from propagating and reaching the antenna 30.

  In addition, the adjacent portion of the transmission side transmission region 3PA and the reception side transmission region 3PB can be surrounded by one division line 13 so that each region can be surrounded, so that the layout of the noise removal line 11 is simplified. Can be made easier.

  Further, by forming the noise removal line 11 so as to surround the periphery of the adhesive portion 3D for attaching the radar device 20 to the attachment surface 3A of the window panel 3, noise generated in the radar device 20 passes through the adhesive portion 3D. Propagation to the window panel 3 can be further reliably suppressed. Noise generated in the radar device 20 is likely to propagate toward the window panel 3 from the adhesive portion 3D that is a contact portion between the radar device 20 and the window panel 3. Therefore, by forming the noise removal line 11 so as to surround the periphery of the bonding portion 3D, it is possible to further reliably suppress noise from propagating toward the antenna 30.

  Further, by forming the noise removal line 11 at a position that does not overlap with the bonding portion 3D, that is, a position that avoids the bonding portion 3D, without causing a decrease in the bonding strength between the radar device 20 and the window panel 3, It becomes possible to more reliably suppress the propagation of noise toward the antenna 30.

  Further, by forming the extension line 14 constituting the noise removal line 11 so as to extend outward from the region surrounded by the peripheral line 12, the noise leaked outside the peripheral line 12 is extended. It is possible to further reliably suppress the noise from being propagated toward the antenna 30 by being input to the line 14.

As mentioned above, although one Embodiment of the noise removal mechanism of this invention was described, this invention is not limited to this, It can change suitably in the range which does not deviate from the technical idea of the invention.
For example, the wiring form (layout) of the noise removal line 11 is not limited to the shape of the above-described embodiment, and can be formed in an arbitrary shape.
For example, in the embodiment described above, the peripheral line 12 is arranged so as to surround the conductor line or the conductor film constituting the noise removal line 11 along the outer edge of the transmission surface 3P of the window panel 3, but other than this. In addition, for example, it may be formed so as to surround the transmission surface 3P with an arbitrary interval from the outer edge of the transmission surface 3P.

  In the above-described embodiment, the dividing line 13 is formed so as to separate the transmission side transmission region 3PA and the reception side transmission region 3PB on the transmission surface 3P of the window panel 3, but in addition to this, for example, The dividing line 13 composed of a plurality of noise removal lines 11 can also be formed, for example, by forming the dividing line 13 on each of the outer edge of the transmission side transmission region 3PA and the outer edge of the reception side transmission region 3PB.

  In the above-described embodiment, the periphery of the adhesive portion 3D is surrounded by the peripheral line 12, or the periphery of the adhesive portion 3D is surrounded by the extension line 14, but other than this, for example, the peripheral line 12 In addition to the extension line 14, the noise removal line 11 is formed along the outside of the outer edge of the bonding portion 3D, so that it is possible to further reliably suppress the propagation of noise from the bonding portion 3D. .

  Further, in the above-described embodiment, the extension line 14 is formed outside the transmission surface 3P of the window panel 3 so that the noise removal line 11 is formed so as to form a rectangle, or one end is electrically opened. In addition to this, for example, the noise removal line 11 is arranged in the vicinity of the center of the window panel 3, and the noise removal line 11 is respectively viewed from the left and right of the noise removal line 11. The extension line 14 can also be configured by forming a plurality of noise removal lines 11 extending in the vehicle width direction.

  In the above-described embodiment, the radar device 20 is bonded to the mounting surface 3A of the window panel 3 via the bonding portion 3D. However, the mounting of the radar device 20 to the window panel 3 is limited to such bonding. For example, attachment can be performed by an arbitrary configuration such as screwing or fixing with a fixing tool. Even when the radar device 20 is attached to the window panel 3 by other than such bonding, the noise of the radar device 20 is reduced by surrounding the contact portion between the radar device 20 and the window panel 3 with the noise removal line 11. Propagation to the antenna 30 via 3 can be prevented.

  Further, in the above-described embodiment, the noise removal line 11 is set to the ground potential (ground potential) via the ground-side terminal 15, but the noise removal line 11 itself is directly electrically connected to the vehicle 1 and the vehicle 1. It may be configured to be grounded via a pin. Alternatively, a dedicated ground wiring may be provided, and the noise removal line 11 may be set to the ground potential via the ground wiring.

  In the above-described embodiment, an example in which the radar device 20 and the noise removal mechanism 10 are formed on the windshield (window panel) is shown. However, the radar device 20, the antenna 30, and the noise removal mechanism 10 are configured with a rear glass ( (Window panel) can be applied in exactly the same manner.

DESCRIPTION OF SYMBOLS 1 Vehicle 3 Window panel 10 Noise removal mechanism 11 Noise removal line (noise removal part)
12 Perimeter line 13 Dividing line 14 Extension line 20 Radar device 30 Antenna

Claims (6)

A window panel that covers a window opening of a vehicle, an antenna that is provided on the window panel and that transmits and receives signals between an apparatus disposed in the vehicle and an external device, and is attached to a mounting surface of the window panel And a radar device for monitoring the surroundings of the vehicle,
A noise removing mechanism, wherein a noise removing portion made of a conductive member for removing noise caused by the radar device is provided on the mounting surface so as to be electrically separated from the antenna. The window panel includes a transmission surface capable of transmitting a radar wave transmitted and received by the radar device,
The noise removing unit is made of a linear conductive member, and includes a peripheral line surrounding the entire outer edge of the transmission surface,
The noise removal mechanism according to claim 1, wherein the antenna is provided outside an area surrounded by the peripheral line. The transmission surface includes a transmission side transmission region that transmits transmission waves output from the radar device, and a reception side transmission region that transmits reception waves input to the radar device,
The noise removing unit includes a dividing line that separates the transmission-side transmission area and the reception-side transmission area and is electrically connected to the peripheral line on one end side and the other end side. Item 3. The noise removal mechanism according to Item 2. The radar device is bonded to the bonding portion of the mounting surface,
The noise removal mechanism according to claim 1, wherein the noise removal unit is formed so as to surround a periphery of the bonding unit.   The noise removal mechanism according to claim 4, wherein the noise removal unit is formed at a position that does not overlap with the bonding unit.   The said noise removal part is equipped with the extension line extended toward the outer side rather than the area | region enclosed by the said surrounding line, and electrically connected to the said surrounding line. The noise removal mechanism described.

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