JP6187177B2 - Automotive window glass and automobile - Google Patents

Description

  The present invention relates to a window glass for an automobile, and more particularly to a noise countermeasure technique for a window glass to which a sensor for monitoring outside the vehicle is attached in proximity.

  In the automobile, sensors for acquiring various conditions outside the vehicle through the window glass are attached to the window glass or attached to a position close to the window glass. For example, an anti-collision sensor and a driving support system are installed in an automobile to enhance safety, and a CCD camera, a CMOS camera, a near-infrared laser transceiver, an ultrasonic transceiver, and / or a millimeter wave for acquiring a state outside the vehicle. Sensors such as transceivers are provided.

  Further, in order to improve the design of the automobile and prevent the pole antenna from being damaged, a glass antenna is provided on the window glass of the automobile.

  As background arts in this technical field, there are JP 2013-166509 A (Patent Document 1) and JP 2003-211956 A (Patent Document 2). Patent Document 1 describes a collision prevention system that checks an obstacle ahead by a camera disposed on the inside of a front window glass and brakes the automobile. Patent Document 2 (Japanese Patent Application Laid-Open No. 2003-211956) discloses that a transparent conductive film having electromagnetic wave shielding ability is provided on the entire surface of a window glass, and a non-conductive window for communication equipment to communicate with the outside is a transparent conductive film. Is disclosed.

JP 2013-166509 A JP 2003-211956 A

  When a sensor as described in Patent Document 1 is disposed adjacent to a glass antenna, the glass antenna picks up electromagnetic noise radiated from the sensor, so that there is a problem that reception performance is deteriorated. Further, the window glass described in Patent Document 2 has a problem that a glass antenna cannot be provided on the window glass because the conductive film covers almost the entire glass surface.

  An object of the present invention is to reduce the influence of noise generated by a sensor on an antenna.

  That is, the present invention is an automobile window glass, and includes an antenna that receives broadcast waves, and a conductive pattern that is larger than a sensor that acquires information outside the vehicle through the window glass, and the conductive pattern includes at least the sensor. A window glass for an automobile having an opening that transmits light to be transmitted or received, a sound wave, or an electromagnetic wave, and the conductive pattern and the antenna are spaced apart from each other.

  According to the present invention, there is further provided a window glass for an automobile, wherein the sensor is housed in a case having an electrostatic shield, and a shield region including the sensor is formed by the electrostatic shield and the conductive pattern. It is.

  Furthermore, the present invention is the automotive window glass, wherein the conductive pattern is smaller than an insulating ceramic printing region formed on a surface of the automotive window glass.

  Moreover, the present invention is the automotive window glass, wherein the conductive pattern is formed by firing a conductive ceramic paste.

  Moreover, the present invention is the window glass for an automobile, wherein the conductive pattern is formed in a mesh shape by a plurality of conductive lines.

  The present invention further provides the window glass for an automobile, wherein an area of the opening is 8400 square millimeters or less.

  The present invention further provides the window glass for an automobile, wherein an area of the conductive pattern is 17600 square millimeters or more including the opening.

  Furthermore, the present invention is the window glass for an automobile, further characterized in that the antenna is disposed 10 mm or more away from the conductive pattern.

  Further, the present invention is the automotive window glass, wherein the antenna is an antenna that receives an AM broadcast wave.

  In addition, the present invention is an automobile equipped with the above-described automotive window glass, wherein the conductive pattern is grounded by being connected to a vehicle body, and the sensor is the automotive window glass or the The vehicle is housed in a case having an electrostatic shield in a state of being attached to a vehicle body, and the electrostatic shield is grounded by being connected to the vehicle body.

  Furthermore, the present invention is an automobile characterized in that the conductive pattern is grounded by being connected to the vehicle body by direct current or capacitive coupling.

  Furthermore, the present invention is an automobile characterized in that the electrostatic shield is grounded by connecting the electrostatic shield and the conductive pattern by direct current or capacitive coupling.

  According to the representative embodiment of the present invention, it is possible to reduce the influence of noise generated by the sensor on the antenna.

The front view of the glass plate of 1st Example of this invention. Sectional drawing of the windshield periphery of the motor vehicle with which the glass plate of 1st Example of this invention was mounted | worn. The front view of the glass plate of 2nd Example of this invention. Sectional drawing of the windshield periphery of the motor vehicle with which the glass plate of 2nd Example of this invention was mounted | worn. The front view of the glass plate of 3rd Example of this invention. The enlarged view of the noise shielding pattern part of the glass plate of 4th Example of this invention. The enlarged view of the noise shielding pattern part of the modification of the glass plate of 4th Example of this invention. The characteristic view of the antenna arrange | positioned at the glass plate of 1st Example of this invention. The characteristic view of the antenna arrange | positioned at the glass plate of 4th Example of this invention.

  1, 3, and 5 are front views of the glass plate 10 according to the embodiment of the present invention viewed from the inside of the vehicle, and FIGS. 2 and 4 show how the upper portion of the glass plate 10 is attached to the vehicle body 50. It is sectional drawing shown.

  The glass plate 10 according to the embodiment of the present invention is a window glass that is attached to a front window of an automobile, and the periphery thereof is attached to the vehicle body 50 with an adhesive. The edge (body flange) of the opening to which the front window glass of the body is attached is indicated by a broken line 51 in FIG.

  A black coating layer 12 is provided on the peripheral edge of the glass plate 10. The black coating layer 12 is a normally black layer formed by screen-printing an insulating ceramic paste made of a low melting point glass powder and a pigment in the form of a paste on a glass surface and baking it.

  The black coating layer 12 extends downward in the upper center portion of the glass plate 10. A sensor 41 (see FIG. 2) for monitoring the front of the vehicle through the front window glass or irradiating light or electromagnetic waves in front of the vehicle is attached to the upper central portion of the black coating layer 12. For example, the sensor 41 irradiates the front of the vehicle with near infrared laser light, ultrasonic waves, or millimeter waves (electromagnetic waves), and measures a distance to an obstacle ahead of the vehicle (near infrared laser transceiver, Sound wave transceivers, millimeter wave transceivers, etc.). The sensor 41 may be an image sensor (CCD camera, CMOS camera, etc.) that captures an image in front of the vehicle. Further, the sensor 41 may only receive light, sound waves, or electromagnetic waves for acquiring information ahead of the vehicle, or may only emit light.

  Even if the sensor 41 is not attached to the glass plate 10, it may be attached to the inside of the ceiling of the vehicle and acquire the front state through the front window glass.

  A noise shielding pattern 20 is provided on the black coating layer 12 facing the sensor 41 so as not to protrude from the black coating layer 12. That is, the noise shielding pattern 20 is smaller than the black coating layer 12. The noise shielding pattern 20 is formed by printing a conductive ceramic paste on the black coating layer 12, drying, and baking by a heating furnace, but a conductor may be directly formed on the surface of the glass plate 10, You may form a conductor in the sheet | seat made from a synthetic resin for affixing on the glass plate 10. FIG.

  The noise shielding pattern 20 may be formed of a conductor having a predetermined area, conductive lines may be formed in a mesh shape (see FIG. 6), or conductive lines may be provided in parallel.

  The noise shielding pattern 20 is provided with an opening 21 which is a region where no conductor is provided. The sensor 41 receives or transmits light or electromagnetic waves through the opening 21.

  The noise shielding pattern 20 is connected to the vehicle body 50 by direct current or capacitive coupling, so that the noise shielding pattern 20 is grounded at least in high frequency (alternating current) so that a signal of the frequency of the broadcast wave flows to the vehicle body 50. Connected to.

  As shown in FIG. 2, the sensor 41 is accommodated in the case 42. The case 42 is provided with an electrostatic shield 43 made of a conductive film. For the electrostatic shield 43, the case 42 may be formed of a conductive material such as metal, a metal shield plate may be provided on the inner surface of the case 42, or a conductive paint may be applied to the inner surface of the case 42. Good. A broken line 25 shows the shape of the end of the case 42 projected onto the noise shielding pattern 20. The end of the case 42 has a size that does not protrude from the noise shielding pattern 20.

  The electrostatic shield 43 is provided with a connection terminal 45 and is connected to the vehicle body 50 by the ground wire 23. Alternatively, the electrostatic shield 43 is grounded to the vehicle body 50 via the noise shielding pattern 20 by being connected to the noise shielding pattern 20 at a high frequency by capacitive coupling.

  Further, a decorative cover may be further provided outside the case 42. By making the case 42 and the decorative cover so as not to protrude from the black coating layer 12, the sensor 41 can be made invisible from the outside of the vehicle.

  An antenna 30 for receiving broadcast waves is provided at a position spaced apart from the noise shielding pattern 20 at the upper left corner of the glass plate 10. In FIG. 2, the antenna 30 is provided at the upper left corner of the glass plate 10, but may be provided at the upper right corner of the glass plate 10, or may be provided at both the upper left corner and the right corner of the glass plate 10.

  The antenna 30 is connected to the antenna amplifier 33 via the feeding point 31. The antenna amplifier 33 amplifies the high frequency signal received by the antenna 30 and sends it to the radio receiver via the connection point 32.

  The antenna 30 is an antenna for receiving an AM broadcast wave of 522 to 1710 kHz, but may receive an FM broadcast wave (76 to 90 MHz or 88 to 108 MHz) in addition to the AM broadcast wave.

  The antenna 30 is formed by printing each filament with a width of about 0.7 mm with a conductive ceramic paste at a predetermined position on the indoor surface of the glass plate 10, drying, and baking it in a heating furnace. An antenna pattern may be formed directly on the surface of the plate 10 or an antenna in which a conductor is formed on a synthetic resin sheet to be attached to the glass plate 10.

  An automobile inspection mark is affixed to the upper center portion of the glass plate 10, and a periodic inspection and maintenance sticker is affixed to the upper left portion.

  Next, the effect | action of the glass plate (window glass for motor vehicles) of embodiment of this invention is demonstrated.

  The glass plate 10 of the present embodiment includes an antenna 30 that receives broadcast waves, and includes a noise shielding pattern 20 that is larger than the sensor 41 that acquires information outside the vehicle through the window glass. At least the sensor 41 transmits the noise shielding pattern 20. Or it has the opening part 21 which permeate | transmits the received light, a sound wave, or electromagnetic waves (for example, a laser beam, an ultrasonic wave, a millimeter wave, etc.), and the noise shielding pattern 20 and the antenna 30 are arrange | positioned apart. When the glass plate 10 is attached to the vehicle body 50, the sensor 41 is disposed at the position of the noise shielding pattern 20. By connecting the noise shielding pattern 20 to the vehicle body 50 and grounding it, the influence of noise generated by the sensor 41 on the antenna can be reduced, and deterioration of the reception performance of the antenna can be prevented.

  The sensor 41 is housed in a case 42 having an electrostatic shield 43, and a shield region including the sensor 41 is formed by the electrostatic shield 43 and the noise shielding pattern 20. That is, the sensor 41 is smaller than the noise shielding pattern 20 and the electrostatic shield 43. By connecting the electrostatic shield 43 and the noise shielding pattern 20 to the vehicle body 50 and grounding, a shield region surrounding the sensor 41 can be formed, and the influence of noise generated by the sensor 41 on the antenna can be further reduced. .

  Further, since the noise shielding pattern 20 is smaller than the insulating ceramic printing region 12 formed on the surface of the glass plate 10, the noise shielding pattern 20 is hidden inside the ceramic printing region 12, so that the appearance when viewed from the outside of the vehicle is improved. Can be improved.

  Moreover, since the noise shielding pattern 20 is formed by baking a conductive ceramic paste, it can be formed in the same process using the same material as the glass antenna, and the manufacturing efficiency is not deteriorated.

  Moreover, since the noise shielding pattern 20 is formed in a mesh shape with a plurality of linear conductors, it can be formed in the same process with the same line width as the glass antenna, and the manufacturing efficiency does not deteriorate.

  Hereinafter, various embodiments of the present invention will be described.

<Example 1>
FIG. 1 is a front view of the glass plate 10 of the first embodiment, and FIG. 2 is a cross-sectional view of the periphery of the windshield of an automobile equipped with the glass plate 10 of the first embodiment.

  In the first embodiment, the connection terminal 22 is provided on the noise shielding pattern 20. The connection terminal 22 is connected to the bonding point 24 of the vehicle body 50 by the ground wire 23. As a result, the noise shielding pattern 20 is directly connected to the vehicle body 50 and grounded in a direct current manner.

  The electrostatic shield 43 of the case 42 is in contact with the noise shielding pattern 20. Furthermore, the electrostatic shield 43 is provided with a connection terminal 45. The connection terminal 45 is connected to the bonding point 24 of the vehicle body 50 by the ground wire 23. The electrostatic shield 43 may be in contact with the noise shielding pattern 20 or directly connected to the vehicle body 50. As a result, the electrostatic shield 43 is connected to the vehicle body 50 via the noise shielding pattern 20 or directly and is grounded in a direct current manner.

  The size of the noise shielding pattern 20 of the first embodiment is 160 mm long × 110 mm wide, and the size of the opening 21 is 90 mm long × 30 mm wide to 120 mm long × 70 mm wide. The change in the noise level depending on the size of the opening 21 is shown in FIG.

  FIG. 8 is a characteristic diagram of the antenna 30 arranged on the glass plate 10 according to the first embodiment. In seven cases, the level at which the antenna 30 receives noise generated by the sensor 41 is measured by a spectrum analyzer. Show.

  Case 1 is an OFF state in which the sensor 41 is not operating. Case 2 is in an ON state in which the sensor 41 is operating, and neither the noise shielding pattern 20 nor the electrostatic shield 43 on the glass surface is provided. Case 3 is an ON state in which the sensor 41 is operating in a state where the electrostatic shield 43 is provided on the case 42 of the sensor 41 and the noise shielding pattern 20 is not provided.

  Case 4 is an ON state in which the sensor 41 is operating with the noise shielding pattern 20 and the electrostatic shield 43 provided. The noise shielding pattern 20 of the case 4 is not provided with the opening 21. Case 5 is an ON state in which sensor 41 is operating with noise shielding pattern 20 and electrostatic shield 43 provided, and opening 21 has a size of 90 mm × 30 mm.

  Case 6 is an ON state in which the sensor 41 is operating with the noise shielding pattern 20 and the electrostatic shield 43 provided, and the opening 21 has a size of 110 mm × 50 mm. The case 7 is an ON state in which the sensor 41 is operating with the noise shielding pattern 20 and the electrostatic shield 43 provided, and the opening 21 has a size of 120 mm × 70 mm.

  In the case 2 in which the sensor 41 is operating, the noise level is as high as about −50 dBm. In the case 3 in which only the electrostatic shield 43 is provided, the noise level is reduced to about −60 dBm, but is still high. . On the other hand, in cases 4 to 7 provided with the electrostatic shield 43 and the noise shielding pattern 20, the noise level is about -70 dBm, which is about 20 dB lower than when no shield is provided.

  Although FIG. 8 shows the noise level of the AM broadcast band, similarly, the noise level of other bands such as the FM broadcast band and the television broadcast band can also be reduced.

  Further, from FIG. 8, the noise level (particularly, the noise level on the low frequency side) does not change significantly until the opening 21 of the noise shielding pattern 20 reaches 120 mm × 70 mm (8400 square millimeters). Furthermore, the noise shielding pattern 20 is 160 mm × 110 mm (17600 square millimeters), and if it is smaller than this size, the noise shielding effect of the pattern 20 is lowered.

  As described above, in the first embodiment of the present invention, since the noise shielding pattern 20 and the electrostatic shield 43 are grounded by connecting them to the vehicle body 50 in a DC manner, the grounding is ensured and the sensor 41 is generated. Noise (electromagnetic wave) can be reliably shielded.

  Further, since the electrostatic shield 43 and the noise shielding pattern 20 are connected in direct current and are grounded, workability during vehicle assembly can be improved.

<Example 2>
FIG. 3 is a front view of the glass plate 10 of the second embodiment, and FIG. 4 is a cross-sectional view of the periphery of the windshield of an automobile equipped with the glass plate 10 of the second embodiment.

  In the second embodiment, the noise shielding pattern 20 is provided at a position where the upper end portion thereof is close to the body flange 51. As a result, the noise shielding pattern 20 is capacitively coupled to the vehicle body 50 (body flange 51) and grounded at a high frequency.

  In addition, the electrostatic shield 43 of the case 42 is not in direct contact with the noise shielding pattern 20 but is disposed in a close position. As a result, the noise shielding pattern 20 is capacitively coupled to the electrostatic shield 43 and grounded to the vehicle body 50 via the electrostatic shield 43 at a high frequency.

  The noise shielding pattern 20 or the electrostatic shield 43 may be directly connected to the vehicle body 50 by using the second embodiment and the first embodiment together. That is, the noise shielding pattern 20 and the vehicle body 50 may be directly connected, and the electrostatic shield 43 and the noise shielding pattern 20 may be capacitively coupled. Further, the noise shielding pattern 20 and the vehicle body 50 may be capacitively coupled, and the electrostatic shield 43 and the noise shielding pattern 20 may be directly connected. Alternatively, the noise shielding pattern 20 and the vehicle body 50 may be capacitively coupled, and the electrostatic shield 43 and the vehicle body 50 may be directly connected.

  The noise shielding pattern 20 of the second embodiment is 160 mm × 110 mm (17600 square millimeters), and the opening 21 has a size of 90 mm × 30 mm to 120 mm × 70 mm.

  As described above, in the second embodiment of the present invention, since the noise shielding pattern 20 is grounded by capacitive coupling with the vehicle body 50, a connection line between the noise shielding pattern 20 and the vehicle body 50 becomes unnecessary, Workability at the time of vehicle assembly can be improved.

  Further, since the electrostatic shield 43 and the noise shielding pattern 20 are connected by capacitive coupling, a connection line between the electrostatic shield 43 and the vehicle body 50 becomes unnecessary, and workability during vehicle assembly can be improved. .

<Example 3>
FIG. 5 is a front view of the glass plate 10 of the third embodiment.

  The noise shielding pattern 20 of the third embodiment is provided at a position where the upper portion thereof overlaps the vehicle body 50. As a result, the noise shielding pattern 20 comes into contact with the vehicle body 50 and is grounded in a direct current manner. Further, the noise shielding pattern 20 may be capacitively coupled to the vehicle body 50 and grounded at a high frequency by capacitive coupling between the upper portion of the noise shielding pattern 20 and the vehicle body 50.

  In addition, the electrostatic shield 43 of the case 42 is not in direct contact with the noise shielding pattern 20 but is disposed in a close position. As a result, the noise shielding pattern 20 is capacitively coupled to the electrostatic shield 43 and grounded to the vehicle body 50 via the electrostatic shield 43 at a high frequency.

  Note that the noise shielding pattern 20 or the electrostatic shield 43 may be directly connected to the vehicle body 50 by using the third embodiment and the first embodiment together. That is, the noise shielding pattern 20 and the vehicle body 50 may be directly connected or capacitively coupled, and the electrostatic shield 43 and the noise shielding pattern 20 may be capacitively coupled. Alternatively, the noise shielding pattern 20 and the vehicle body 50 may be directly connected or capacitively coupled, and the electrostatic shield 43 and the vehicle body 50 may be directly connected.

  The noise shielding pattern 20 of the third embodiment is 160 mm × 110 mm (17600 square millimeters), and the opening 21 has a size of 90 mm × 30 mm to 120 mm × 70 mm.

  As described above, in the third embodiment of the present invention, since the noise shielding pattern 20 is grounded by contact with the vehicle body 50 or by capacitive coupling, a connection line between the noise shielding pattern 20 and the vehicle body 50 is unnecessary. Thus, workability during vehicle assembly can be improved.

  Further, since the electrostatic shield 43 and the noise shielding pattern 20 are connected by capacitive coupling, a connection line between the electrostatic shield 43 and the vehicle body 50 becomes unnecessary, and workability during vehicle assembly can be improved. .

<Example 4>
FIG. 6 is an enlarged view of the noise shielding pattern 20 portion of the glass plate 10 of the fourth embodiment. The noise shielding pattern 20 of the fourth embodiment shown in FIG. 6 is configured in a mesh shape by intersecting a conductive line 201 extending in the horizontal direction and a conductive line 202 extending in the vertical direction. Then, one opening 21 is formed by a region where the conductive lines 201 and 202 on the mesh are not provided in the noise shielding pattern 20.

  FIG. 7 is an enlarged view of the noise shielding pattern 20 of a modification of the glass plate 10 of the fourth embodiment of the present invention. The noise shielding pattern 20 of the modification shown in FIG. 7 is configured in a mesh shape by intersecting a conductive line 201 extending in the horizontal direction and a conductive line 202 extending in the vertical direction. Then, two openings 21 are formed by the area where the mesh conductive lines 201 and 202 are not provided in the noise shielding pattern 20. These two openings can be used as, for example, a window for irradiating infrared rays and a window for receiving infrared rays. The size and shape of these two openings 21 may be the same or different.

  For the conductive wires 201 and 202 constituting the mesh in the conductor of the noise shielding pattern 20 shown in FIGS. 6 and 7, for example, 0.7 mm wide copper foil can be used, but a conductive ceramic paste is baked. It may be formed. Although all the conductors of the noise shielding pattern 20 shown in FIG. 6 have the same width, some of the conductors may have different widths. For example, the conductors constituting the outer periphery and inner periphery of the noise shielding pattern 20 may be widened to improve the strength of the noise shielding pattern 20.

  Moreover, although the space | interval of the conductor of the noise shielding pattern 20 shown in FIG. 6, FIG. 7 is 10 mm, a 20 mm pitch may be sufficient. Moreover, although the vertical interval and the horizontal interval of the conductor of the noise shielding pattern 20 shown in FIGS. 6 and 7 are the same, they may be different.

  FIG. 9 is a characteristic diagram of the antenna 30 arranged on the glass plate 10 according to the fourth embodiment. In seven cases, the level at which the antenna 30 receives noise generated by the sensor 41 is measured by a spectrum analyzer. Show. Since the measurement data shown in FIG. 8 and the measurement data of FIG. 9 are measured in different environments, the floor noise in the sensor-off state is different.

  Case 1 is an OFF state in which the sensor 41 is not operating. Case 2 is in an ON state in which the sensor 41 is operating, and neither the noise shielding pattern 20 nor the electrostatic shield 43 on the glass surface is provided. Case 3 is an ON state in which the sensor 41 is operating in a state where the electrostatic shield 43 is provided on the case 42 of the sensor 41 and the noise shielding pattern 20 is not provided.

  Case 4 is an ON state in which the sensor 41 is operating with the noise shielding pattern 20 and the electrostatic shield 43 provided. The noise shielding pattern 20 of the case 4 is not provided with the opening 21. The case 5 is an ON state in which the sensor 41 is operating with the noise shielding pattern 20 having an opening and the electrostatic shield 43 provided, and the noise shielding pattern 20 is a planar (solid pattern) conductor. Is formed. In addition, the opening part 21 of the noise shielding pattern 20 of the cases 5 to 7 has a size of 110 mm × 50 mm.

  The case 6 is an ON state in which the sensor 41 is operating with the noise shielding pattern 20 having an opening and the electrostatic shield 43 provided, and the noise shielding pattern 20 is formed of a mesh-like conductor with a pitch of 10 mm. Has been. The case 7 is in an ON state in which the sensor 41 is operating with the noise shielding pattern 20 having an opening and the electrostatic shield 43 provided, and the noise shielding pattern 20 is formed of a mesh-like conductor with a pitch of 20 mm. Has been. In cases 6 and 7, a noise shielding pattern 20 (FIG. 6) in which one opening 21 is formed is used.

  In the case 2 in which the sensor 41 is operating, the noise level is as high as about −50 dBm. In the case 3 in which only the electrostatic shield 43 is provided, the noise level is reduced to about −60 dBm, but is still high. . On the other hand, in cases 4 to 7 provided with the electrostatic shield 43 and the noise shielding pattern 20, the noise level is about -70 dBm, which is about 20 dB lower than when no shield is provided.

  Further, from FIG. 9, even if the noise shielding pattern 20 is formed of a solid pattern conductor or a mesh conductor having a pitch of 20 mm, the noise level changes only about 5 dB. It can be seen that there is no major change. That is, even if the noise shielding pattern 20 is not a conductor with a solid pattern, even if the conductive lines are configured in a mesh shape, the noise shielding pattern 20 has a sufficient noise shielding effect.

  Although FIG. 8 shows the noise level of the AM broadcast band, similarly, the noise level of other bands such as the FM broadcast band and the television broadcast band can also be reduced.

  Although the present invention has been described in detail with reference to the accompanying drawings, the present invention is not limited to such specific configurations, and various modifications and equivalents within the spirit of the appended claims Includes configuration.

DESCRIPTION OF SYMBOLS 10 Glass board 12 Ceramic printing area | region 20 Noise shielding pattern 21 Opening part 22 Connection terminal 23 Ground wire 24 Bonding point 30 Reception antenna 31 Feeding point 32 Connection point 33 Antenna amplifier 41 Sensor 42 Sensor case 43 Electrostatic shield 45 Connection terminal 50 Body

Claims (11)

Automotive window glass,
An antenna for receiving broadcast waves;
A conductive pattern larger than a sensor for acquiring information outside the vehicle through the window glass,
The conductive pattern has an opening that transmits at least light, sound waves, or electromagnetic waves transmitted or received by the sensor,
The conductive pattern and the antenna are spaced apart from each other ,
The sensor is housed in a case having an electrostatic shield,
Automotive glazing characterized that you form a shield region including the sensor by the said conductive pattern and the electrostatic shield.   Automotive window glass,
  An antenna for receiving broadcast waves;
  A conductive pattern larger than a sensor for acquiring information outside the vehicle through the window glass,
  The conductive pattern has an opening that transmits at least light, sound waves, or electromagnetic waves transmitted or received by the sensor,
  The conductive pattern and the antenna are spaced apart from each other,
  The window glass for automobiles, wherein the conductive pattern is smaller than an insulating ceramic printing region formed on a surface of the window glass for automobiles.   The window glass for an automobile according to claim 1 or 2, wherein the conductive pattern is formed by baking a conductive ceramic paste.   4. The automotive window glass according to claim 1, wherein the conductive pattern is formed in a mesh shape by a plurality of conductive lines. 5.   5. The automobile window glass according to claim 1, wherein an area of the opening is 8400 square millimeters or less.   6. The automobile window glass according to claim 1, wherein an area of the conductive pattern is 17600 square millimeters or more including the opening.   The window glass for an automobile according to any one of claims 1 to 6, wherein the antenna is disposed 10 mm or more away from the conductive pattern.   The window glass for an automobile according to any one of claims 1 to 7, wherein the antenna is an antenna that receives an AM broadcast wave.   An automobile equipped with the automobile window glass according to any one of claims 1 to 8,
  The conductive pattern is grounded by being connected to a vehicle body,
  The sensor is housed in a case having an electrostatic shield in a state of being attached to the window glass for an automobile or the vehicle body,
  An automobile characterized in that the electrostatic shield is grounded by being connected to the vehicle body.   The automobile according to claim 9, wherein the conductive pattern is grounded by being connected to the vehicle body by direct current or capacitive coupling.   The automobile according to claim 10, wherein the electrostatic shield is grounded by connecting the electrostatic shield and the conductive pattern by direct current or capacitive coupling.