WO2023002896A1 - Verre à vitre de véhicule et dispositif sur verre à vitre de véhicule - Google Patents

Verre à vitre de véhicule et dispositif sur verre à vitre de véhicule Download PDF

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Publication number
WO2023002896A1
WO2023002896A1 PCT/JP2022/027555 JP2022027555W WO2023002896A1 WO 2023002896 A1 WO2023002896 A1 WO 2023002896A1 JP 2022027555 W JP2022027555 W JP 2022027555W WO 2023002896 A1 WO2023002896 A1 WO 2023002896A1
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WIPO (PCT)
Prior art keywords
window glass
conductive frame
glass plate
vehicle window
conductive
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PCT/JP2022/027555
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English (en)
Japanese (ja)
Inventor
聡史 船津
Original Assignee
Ａｇｃ株式会社
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Publication date
Application filed by Ａｇｃ株式会社 filed Critical Ａｇｃ株式会社
Priority to JP2023536706A priority Critical patent/JPWO2023002896A1/ja
Priority to DE112022003592.7T priority patent/DE112022003592T5/de
Publication of WO2023002896A1 publication Critical patent/WO2023002896A1/fr

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    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q1/00—Details of, or arrangements associated with, antennas
    • H01Q1/27—Adaptation for use in or on movable bodies
    • H01Q1/32—Adaptation for use in or on road or rail vehicles

Definitions

  • the present disclosure relates to a vehicle window glass and a vehicle window glass device.
  • a vehicle windshield consists of two glass panes sandwiching a polyvinyl butyral (PVB) layer, with a low-E coating between the PVB layer and the interior glass pane. It is conventionally known that an antenna wire is arranged between the PVB layer and the vehicle-exterior glass pane (see, for example, Patent Document 1).
  • PVB polyvinyl butyral
  • the thickness of the intermediate film such as the PVB layer is usually less than 1 mm, capacitive coupling may occur between the low-emissivity coating layer and the antenna wire, which are conductors. Therefore, even if the length of the antenna wire is adjusted, it is not easy to improve the antenna gain if a conductive layer such as a low-emissivity coating layer is formed.
  • the present disclosure provides a vehicle window glass and a vehicle window glass device that include a conductive layer and are capable of transmitting and receiving radio waves in a predetermined frequency band with high gain.
  • a first glass plate having a main surface; a conductive layer disposed directly or indirectly on the main surface of the first glass plate; a conductive frame disposed directly or indirectly on the main surface of the first glass plate and having an inner edge along the outer edge of the conductive layer in plan view of the first glass plate; a first power supply unit electrically connected to the conductive frame; a second power supply unit electrically connected to the conductive frame; with The vehicle window glass is provided, wherein the conductive frame has an electrical resistance lower than that of the conductive layer, and is a diversity antenna having the first power feeding section and the second power feeding section as power feeding sections.
  • the term “directly or indirectly arranged” means arranged on the main surface without interposing another layer, or arranged on the main surface through another layer. .
  • a vehicle window glass device that includes the vehicle window glass and a conductive window frame to which the vehicle window glass is attached.
  • a vehicle window glass and a vehicle window glass device that include a conductive layer and are capable of transmitting and receiving radio waves in a predetermined frequency band with high gain.
  • FIG. 10 illustrates several path lengths along a conductive frame in a configuration with a ground conductor portion electrically connected to the conductive frame; It is a top view which shows one structural example of the vehicle windowpane apparatus provided with the vehicle windowpane concerning 2nd Embodiment. It is a sectional view showing an example of 1 composition of a vehicle windowpane device provided with a vehicle windowpane concerning a 2nd embodiment.
  • FIG. 11 illustrates several path lengths along the conductive frame in a fourth embodiment in which the conductive frame does not include a portion at the same potential as ground; BRIEF DESCRIPTION OF THE DRAWINGS It is an exploded perspective view which shows the 1st structural example of the windowpane for vehicles concerning each embodiment.
  • FIG. 3 is an exploded perspective view showing a second configuration example of a vehicle window glass according to each embodiment;
  • FIG. 3 is an exploded perspective view showing a third configuration example of a vehicle window glass according to each embodiment;
  • FIG. 7 is an exploded perspective view showing a fourth configuration example of the vehicle window glass according to each embodiment.
  • FIG. 3 is an exploded perspective view showing a second configuration example of a vehicle window glass according to each embodiment;
  • FIG. 3 is an exploded perspective view showing a third configuration example of a vehicle window glass according to each embodiment;
  • FIG. 7 is an exploded perspective view showing a fourth configuration example of the vehicle window glass according to each embodiment.
  • FIG. 12 is an exploded perspective view showing a fifth configuration example of the vehicle window glass according to each embodiment.
  • FIG. 11 is an exploded perspective view showing a sixth configuration example of the vehicle window glass according to each embodiment. It is a top view which shows an example of the simulation model of the vehicle windowpane apparatus provided with the vehicle windowpane concerning each embodiment.
  • FIG. 10 is a diagram showing an example of measurement results of a reflection coefficient S11 with respect to a path length from a feeding section to a ground point in vertical feeding;
  • FIG. 5 is a diagram showing an example of measurement results of a reflection coefficient S11 and a transmission coefficient S21 with respect to a path difference between feeding portions in vertical feeding.
  • FIG. 5 is a diagram showing an example of measurement results of a reflection coefficient S11 with respect to a path length from a feeding section to a ground point in left and right feeding;
  • FIG. 5 is a diagram showing an example of measurement results of a reflection coefficient S11 and a transmission coefficient S21 with respect to a path difference between feeding portions in vertical feeding.
  • FIG. 11 is a diagram showing an example of measurement results of antenna gain for horizontally polarized waves when two feeding parts are arranged on adjacent sides of a conductive frame in a form in which the conductive frame does not include a portion having the same potential as the ground; be.
  • FIG. 10 is a diagram showing an example of measurement results of antenna gain for vertically polarized waves when two feeding parts are arranged on adjacent sides of a conductive frame in a configuration that does not include a portion that has the same potential as the ground; be.
  • the X-axis direction, the Y-axis direction, and the Z-axis direction are orthogonal to each other.
  • the XY plane, the YZ plane and the ZX plane are respectively a virtual plane parallel to the X-axis direction and the Y-axis direction, a virtual plane parallel to the Y-axis direction and the Z-axis direction, and a virtual plane parallel to the Z-axis direction and the X-axis direction. represents a plane.
  • Examples of the vehicle window glass according to each embodiment include a rear glass attached to the rear of the vehicle, a windshield attached to the front of the vehicle, a side glass attached to the side of the vehicle, and a roof glass attached to the ceiling of the vehicle.
  • Vehicle window glass is not limited to these examples.
  • FIG. 1 is a plan view showing a configuration example of a vehicle window glass device including a vehicle window glass according to the first embodiment.
  • a windowpane device 201 shown in FIG. 1 includes a vehicle windowpane 100A and a conductive window frame 63 to which the windowpane 100A is attached.
  • FIG. 1 illustrates a windowpane 100A attached to a window frame 63 formed on a vehicle body portion 62 that is a part of a vehicle 60, viewed from the inside of the vehicle.
  • the positive side in the Z-axis direction represents the inside of the vehicle
  • the negative side in the Z-axis direction represents the outside of the vehicle.
  • FIG. 1 is an example of a case where the windowpane 100A is applied to the side glass of a vehicle.
  • the window frame 63 is a conductive part that can be grounded, and is also called a flange.
  • the window frame 63 has a frame 61 forming an opening covered by the windowpane 100A.
  • the frame 61 comprises frame sides 61a, 61b, 61c and 61d as illustrated in FIG.
  • the frame 61 is an example of the inner edge of the window frame 63 .
  • the windowpane 100A is a single-pane windowpane that mainly includes a glass plate 10, a conductive layer 30, a conductive frame 70, a power supply section 80, and a power supply section 81.
  • a single-pane windowpane refers to a windowpane composed of only one glass plate (in this example, the glass plate 10).
  • the thickness of the glass plate 10 in the single plate is not particularly limited, and generally can be appropriately selected within the range of 0.5 mm to 10 mm.
  • the thickness of the glass plate 10 is preferably 0.5 mm or more, more preferably 0.7 mm or more, still more preferably 1.1 mm or more, and particularly preferably 1.6 mm or more.
  • the thickness of the glass plate 10 is preferably 7 mm or less, more preferably 5 mm or less, and even more preferably 4 mm or less so that the mass of the glass plate 10 does not become too large.
  • the thickness of the glass plate 10 is not particularly limited, and can be appropriately selected within the range of 0.1 mm to 10 mm.
  • the thickness of the glass plate 10 is preferably 0.3 mm or more, more preferably 0.5 mm or more, still more preferably 0.7 mm or more, and particularly preferably 1.1 mm or more. , 1.6 mm or more.
  • the thickness of the glass plate 10 is preferably 3 mm or less, more preferably 2.6 mm or less, and further preferably 2.1 mm or less. preferable.
  • the thickness of the glass plate 10 may be the same as or different from the thickness of the glass plate 20 . If the glass plate 10 and the glass plate 20 have the same thickness, glass plates of the same size can be used.
  • the glass plate 10 has a plate-like shape having a main surface 11 facing the positive side in the Z-axis direction and a main surface 12 facing the side opposite to the main surface 11 in the Z-axis direction (negative side in the Z-axis direction). Dielectric.
  • the glass plate 10 may be transparent or translucent.
  • the main surface 11 is a surface inside the vehicle, and the main surface 12 is a surface outside the vehicle.
  • Glass plate 10 is an example of a first glass plate having a first main surface, and main surface 11 is an example of a first main surface.
  • the glass plate 10 has an outer peripheral edge 13 including outer edges 13a, 13b, 13c and 13d.
  • the glass plate 10 is attached to the window frame 63 so that the outer peripheral edge 13 partially overlaps the window frame 63 in a plan view from the inside of the vehicle.
  • Each of the outer edges 13 a , 13 b , 13 c and 13 d is attached to a corresponding frame side 61 a , 61 b , 61 c and 61 d of the frame side 61 .
  • the outer edges 13a, 13b, 13c, and 13d are hidden by the vehicle body portion 62 or the window frame 63, but FIG. It is shown in solid lines for easy understanding.
  • the conductive layer 30 is a planar conductor arranged directly or indirectly on the main surface 11 of the glass plate 10 .
  • the conductive layer 30 may be a conductor in contact with the main surface 11 or a conductor disposed on the main surface 11 via a transparent or translucent dielectric (not shown).
  • Conductive layer 30 may be transparent or translucent.
  • Specific examples of the conductive layer 30 include a metal film such as an Ag (silver) film, a metal oxide film such as an ITO (indium tin oxide) film, a resin film containing conductive fine particles, and a laminate in which multiple types of films are laminated. etc.
  • the conductive layer 30 may be coated with a resin film such as polyethylene terephthalate by vapor deposition or the like.
  • the conductive layer 30 may be a mesh formed on a film by conductive ink or etching.
  • the conductive layer 30 may be a conductive film coated on the main surface 11 of the glass plate 10 .
  • a specific example of the conductive film is a low emissivity film such as a Low-E (Low Emissivity) film that exhibits low emissivity performance.
  • Low radiation refers to reducing heat transfer by radiation.
  • a low-emissivity film such as a Low-E film secures heat insulation by suppressing heat transfer by radiation.
  • the low emissivity film may be a general one, for example, a laminated film including a transparent dielectric film, an infrared reflective film and a transparent dielectric film in this order.
  • Metal oxides and metal nitrides are typical transparent dielectric films. Typical metal oxides are zinc oxide and tin oxide.
  • a metal film is typical of the infrared reflective film.
  • Silver (Ag) is representative of the metal film.
  • one or more infrared reflective films may be formed between the transparent dielectric films.
  • the conductive layer 30 is not limited to a low-emissivity film such as a Low-E film, and may have other functions as long as it has conductivity.
  • the conductive layer 30 may have functions such as anti-icing and anti-fogging of the windowpane 100A due to heat generated by voltage application.
  • the conductive layer 30 may be a light control film, which will be described later.
  • the conductive frame 70 is a frame-shaped conductor arranged directly or indirectly on the main surface 11 of the glass plate 10 . may be placed.
  • the conductive frame 70 may be arranged on the opposite side of the main surface 11 of the glass plate 10 with respect to the conductive layer 30 .
  • the conductive frame 70 may be in direct contact with the main surface 11 , may be indirectly arranged on the main surface 11 via a dielectric (not shown), or may be in contact with the conductive layer 30 .
  • the conductive frame 70 has an inner edge 71 along the outer edge 31 of the conductive layer 30 in plan view of the glass plate 10 .
  • the conductive frame 70 is made of copper, silver, or the like, for example.
  • the power supply section 80 is an example of a first power supply section electrically connected to the conductive frame 70, and is an electrode for power supply, for example.
  • the power supply unit 80 is provided near the outer peripheral edge 13 of the glass plate 10 so as to be positioned near the window frame 63 when the window glass 100A is attached to the window frame 63 .
  • the power supply unit 80 is electrically connected to one end of a power supply line 90 or an input terminal of an amplifier via a conductive member such as a connector.
  • the other end of the feeder line 90 or the output terminal of the amplifier is connected to a communication device such as a receiver, for example.
  • the feeder line 90 is, for example, a coaxial cable having a signal line 91 and a ground portion 92 .
  • the ground portion 92 may be a shielded wire.
  • One end of the signal line 91 is electrically connected to the power feeding portion 80, and one end of the grounding portion 92 is grounded to the vehicle body portion 62 (or the window frame 63).
  • the power supply section 81 is an example of a second power supply section electrically connected to the conductive frame 70 at a location away from the power supply section 80, and is, for example, an electrode for power supply.
  • the power supply portion 81 is provided near the outer peripheral edge 13 of the glass plate 10 so as to be positioned near the window frame 63 when the window glass 100A is attached to the window frame 63 .
  • the power supply unit 81 is electrically connected to one end of the power supply line 93 or the input terminal of the amplifier via a conductive member such as a connector.
  • the other end of the feeder line 93 or the output terminal of the amplifier is connected to communication equipment such as a receiver, for example.
  • the feeder line 93 is, for example, a coaxial cable having a signal line 94 and a ground portion 95 .
  • the ground portion 95 may be a shielded wire.
  • One end of the signal line 94 is electrically connected to the power supply portion 81, and one end of the ground portion 95 is grounded to the vehicle body portion 62 (or the window frame 63).
  • the feeder lines 90 and 93 may be microstrip lines.
  • the power supply part 80 may protrude outside the conductive frame 70 in plan view of the glass plate 10 . This makes it easy to bring one end of the power supply line 90 (one end of the signal line 91 ) or a conductive member such as a connector that electrically connects the amplifier and the power supply unit 80 into contact with the power supply unit 80 .
  • the shape of the power supply portion 80 is preferably a rectangular shape such as a square, a substantially square, a rectangle, a substantially rectangular shape, or a polygonal shape for mounting, but is not limited thereto.
  • the shape of the power supply portion 80 may be other shapes such as circular, substantially circular, elliptical, or substantially elliptical.
  • the form of the power supply part 81 may also be the same as the form of the power supply part 80 .
  • the conductive frame 70 Since the conductive frame 70 has an inner edge 71 along the outer edge 31 of the conductive layer 30, it is electrically connected to the conductive layer 30 by direct coupling or capacitive coupling. Therefore, by attaching the window glass 100A to the conductive window frame 63, the conductive layer 30 and the conductive frame 70 can function as antenna conductors of the patch antenna, and the vehicle body portion 62 and the window frame 63 can be used as the patch antenna. Can serve as antenna ground. Since the conductive layer 30 and the conductive frame 70 function as antenna conductors, a high-frequency current generated in the conductive frame 70 along the outer edge 31 of the conductive layer 30 is transferred to the power feeding portion 80 electrically connected to the conductive frame 70 and the It can be retrieved from 81.
  • a sheet resistance value (unit: ⁇ / ⁇ ) is given as an index for evaluating the level of the “electrical resistance” referred to here.
  • the conductive layer 30 and the conductive frame 70 are part of a patch antenna that transmits and receives (one or both of transmission and reception) radio waves in a predetermined frequency band. Function. Therefore, even if the electrical resistance of the conductive layer 30 is relatively high, the windowpane 100A and the windowpane device 201 can transmit and receive radio waves in a predetermined frequency band with high gain.
  • the conductive frame 70 can be used as a diversity antenna (hereinafter referred to as "diversity antenna DA") using the plurality of power feeding units 80 and 81 as power feeding units. Also called).
  • the conductive frame 70 operates as a diversity antenna DA that transmits and receives radio waves in a predetermined frequency band.
  • the diversity antenna DA can be a two-channel diversity antenna. Note that if the number of power feeding units electrically connected to the conductive frame 70 is set to N or more (an integer of N ⁇ 3), the diversity antenna DA can also operate as an N-channel diversity antenna. .
  • the conductive frame 70 is a diversity antenna DA having a first patch antenna using the power supply unit 80 as a power supply unit and a second patch antenna using the power supply unit 81 as a power supply unit.
  • the first patch antenna and the second patch antenna are also referred to as "antenna ANT1" and "antenna ANT2", respectively.
  • Antenna ANT1 is an antenna fed by feeding section 80, and utilizes conductive frame 70 (or both conductive layer 30 and conductive frame 70) as an antenna conductor.
  • Antenna ANT2 is an antenna that is fed by feeding section 81, and utilizes conductive frame 70 (or both conductive layer 30 and conductive frame 70) as an antenna conductor.
  • the antenna ANT1 that uses the feeding section 80 as a feeding section may operate as a first slot antenna that uses the gap between the conductive frame 70 and the window frame 63 as a slot.
  • the antenna ANT2 using the feeding portion 81 as a feeding portion may operate as a second slot antenna using the gap between the conductive frame 70 and the window frame 63 as a slot.
  • the antenna ANT1 and the antenna ANT2 are also collectively referred to as “antenna ANT".
  • the antenna ANT may be used as a receiving antenna for receiving radio waves outside the vehicle such as broadcast waves, or may be used as a wireless communication antenna for transmitting and receiving radio waves to and from a communication device outside the vehicle.
  • the antenna ANT is, for example, an antenna capable of transmitting and receiving radio waves in the UHF (Ultra High Frequency) band with a frequency of 300 MHz to 3 GHz.
  • UHF Ultra High Frequency
  • a specific example of the frequency band included in the UHF band is the band of digital terrestrial television broadcast waves (for example, 470 MHz to 713 MHz).
  • the antenna ANT may be, for example, an antenna capable of transmitting and receiving radio waves in the VHF (Very High Frequency) band with frequencies of 30 MHz to 300 MHz.
  • VHF Very High Frequency
  • Specific examples of frequency bands included in the VHF band include the FM broadcast wave band (eg, 76 MHz to 108 MHz) and the DAB Band III band (eg, 174 MHz to 240 MHz).
  • the conductive frame 70 has a closed loop shape, high-frequency current can easily flow through the conductive frame 70, so the antenna gain of the antenna ANT is improved.
  • the conductive frame 70 may partially have a notch.
  • the shape of the conductive frame 70 is not limited to a substantially rectangular shape, and may be a substantially triangular shape or other polygonal shape.
  • the frame portion 70a When the power supply portion 80 is arranged near the corner portion 73a of the conductive frame 70, the frame portion 70a extending in the X-axis direction (e.g., horizontal direction) and the frame portion extending in the Y-axis direction (e.g., vertical direction).
  • the proximity of 70c improves antenna gain for both horizontal and vertical polarization.
  • the frame portion 70b extending in the X-axis direction (eg, horizontal direction) and the frame portion extending in the Y-axis direction (eg, vertical direction) are arranged.
  • the proximity of 70d improves the antenna gain for both horizontal and vertical polarization.
  • the direction of the electric field generated in each of the frame portions 70a and 70b facing each other in the Y-axis direction is the positive side or the positive side in the Y-axis direction.
  • the directions of the electric fields generated in the frame portions 70c and 70d, which are aligned on the negative side and face each other in the X-axis direction, are aligned on the positive side or the negative side in the X-axis direction.
  • the frame portions 70a and 70b extending in the X-axis direction generate an electric field in the Y-axis direction
  • the frame portions 70c and 70d extending in the Y-axis direction generate an electric field in the X-axis direction. Therefore, by arranging the power supply portion 80 near the corner portion 73a, it becomes easier to receive electric fields in the X-axis direction and the Y-axis direction.
  • the environment also improves the antenna gain for both horizontal and vertical polarization. This point also applies to the antenna ANT2 that uses the feeding section 81 as a feeding section.
  • the power supply portion 80 may be arranged near another corner of the conductive frame 70 (for example, the corner 73b, the corner 73c, or the corner 73d). Even if the feeding section 80 is arranged near these other corners, the antenna gain for both horizontal and vertical polarizations is improved in the same manner as when the feeding section 80 is arranged near the corner 73a. do.
  • the power supply portion 81 may be arranged near another corner of the conductive frame 70 (for example, the corner opposite to the corner near the power supply portion 80). Even if the feeding portion 81 is arranged at these other corners, the antenna gain for both the horizontal polarization and the vertical polarization is improved as in the case where the feeding portion 81 is arranged near the corner 73b.
  • the length of the frame portion 70a extending in the X-axis direction from the corner portion 73a or the facing distance between the frame portion 70c and the frame portion 70d in the X -axis direction is LX
  • the distance from the corner portion 73a in the X-axis direction is D.
  • the vicinity of the corner portion 73a may be defined as a region where 0 ⁇ D X /L X ⁇ 0.26 holds.
  • the length of the frame portion 70c extending in the Y-axis direction from the corner portion 73a or the facing distance between the frame portion 70a and the frame portion 70b in the Y -axis direction is LY, and the distance from the corner portion 73a in the Y-axis direction is D.
  • the vicinity of the corner portion 73a may be defined as a region where 0 ⁇ D Y /L Y ⁇ 0.28 holds.
  • the vicinity of other corners (eg, corner 73b, corner 73c, or corner 73d) of the conductive frame 70 may be similarly defined.
  • the window glass 100A may be attached to the window frame 63 so that the main surface 11 is substantially horizontal.
  • substantially horizontal or “substantially horizontal direction” refers to an angular range within ⁇ 30° with respect to the horizontal plane. The angular range may be within ⁇ 15°, within ⁇ 10°, within ⁇ 5°, or within ⁇ 3°.
  • a roof glass is exemplified as the window glass 100A that is attached so that the main surface 11 is substantially horizontal.
  • the window glass 100A may be roof glass formed so that two antennas ANT1 and ANT2 can transmit and receive radio waves of the same frequency band.
  • the diversity antenna DA uses two antennas ANT1 and ANT2 to transmit arbitrary polarized waves (for example, linearly polarized waves, circularly polarized waves, etc. of the same frequency band) that arrive from the vertical direction (zenith direction). polarization) can also be received.
  • the diversity antenna DA may be an antenna that transmits and receives radio waves for satellite communication (for example, radio waves arriving with circular polarization) using two antennas ANT1 and ANT2, and is capable of receiving GNSS signals in a predetermined frequency band. may be formed.
  • the predetermined frequency band may be the 1.2 GHz band or the 1.6 GHz band.
  • the 1.2 GHz band may be, for example, 1.226 GHz to 1.228 GHz
  • the 1.6 GHz band may be, for example, 1.559 GHz to 1.606 GHz
  • the two antennas ANT1 and ANT2 may be configured to receive S-band (2.320 GHz to 2.345 GHz) SDARS (Satellite Digital Audio Radio Service) signals of the 2.3 GHz band.
  • the conductive layer 30 has a sheet resistance of 300 [ ⁇ / ⁇ (ohms per square)] or less, the gain of the antenna ANT is improved.
  • the sheet resistance of the conductive layer 30 is preferably 200 [ ⁇ / ⁇ ] or less, more preferably 100 [ ⁇ / ⁇ ] or less, and more preferably 80 [ ⁇ / ⁇ ]. ] or less is more preferable.
  • the lower limit of the sheet resistance of the conductive layer 30 should be higher than the sheet resistance of the conductive frame 70, and is, for example, 5 [ ⁇ / ⁇ ] or more.
  • the upper limit of the sheet resistance of the conductive frame 70 may be smaller than the sheet resistance of the conductive layer 30, and in terms of improving the gain of the antenna ANT, it is preferably 2 [ ⁇ / ⁇ ] or less, for example, 1 [ ⁇ / ⁇ ] or less. ⁇ / ⁇ ] or less. In this way, the level of electrical resistance between the conductive frame 70 and the conductive layer 30 can be compared using, for example, the sheet resistance as an index.
  • the windowpane 100A can improve the gain of the antenna ANT when the conductive frame 70 is attached to the vehicle body 62 at a distance that allows capacitive coupling. This is because the high-frequency current generated around the conductive frame 70 flows into the vehicle body portion 62 through its capacitive coupling, and the area of the conductor region through which the high-frequency current flows is enlarged.
  • the coupling capacitance between the conductive frame 70 of the antenna ANT and the vehicle body portion 62 is 0.4 [pF] or more, the gain of the antenna ANT can be improved.
  • the lower limit of the coupling capacitance is preferably 1.0 [pF] or more, more preferably 2.0 [pF] or more.
  • the upper limit of the coupling capacitance is not specified, it can be set to 200 [pF] or less, for example.
  • the frame 61 of the window frame 63 has a portion coinciding with at least a portion of the outer edge 72 of the conductive frame 70 or a portion outside at least a portion of the outer edge 72 of the conductive frame 70 in plan view of the glass plate 10 . Having it improves the antenna gain of the antenna ANT. In the example shown in FIG. 1 , the entire portion of the frame 61 is outside the entire portion of the outer edge 72 in plan view of the glass plate 10 .
  • the facing distance between the frame 61 of the window frame 63 and the outer edge 72 of the conductive frame 70 is , 0 mm or more and 50 mm or less, the antenna gain of the antenna ANT is improved.
  • FIG. 2 is an enlarged view illustrating the overlapping of the conductive layer and the conductive frame in plan view.
  • the antenna gain of the antenna ANT is improved.
  • the conductive frame 70 at least partially overlaps the conductive layer 30 and the outer edge 72 of the conductive frame 70 is within 10 mm outside the outer edge 31 of the conductive layer 30 in plan view of the glass plate 10.
  • the antenna gain of the antenna ANT is improved.
  • the distance d between the outer edge 72 of the conductive frame 70 and the outer edge 31 of the conductive layer 30 is preferably 10 mm or less.
  • the distance d is preferably 5 mm or less. Note that the distance d is preferably 1 mm or more from the viewpoint of improving the antenna gain of the antenna ANT.
  • the antenna ANT Antenna gain is improved.
  • the distance between the inner edge 71 of the conductive frame 70 and the outer edge 31 of the conductive layer 30 is preferably 3 mm or less, more preferably 1 mm or less.
  • the width of the conductive frame 70 can be appropriately designed whether it overlaps with at least a part of the conductive layer 30 or not. Well, it may be 3 mm to 10 mm, or 3 mm to 7 mm.
  • the half length (L/2) of the circumferential length L of the inner edge 71 or the outer edge 72 of the conductive frame 70 is " ⁇ /4 ⁇ k ⁇ (2 ⁇ N+1)′′ is preferred.
  • ⁇ is the in-air wavelength of radio waves in the frequency band transmitted and received by the conductive frame 70 (diversity antenna DA)
  • k is the wavelength shortening rate of the glass plate 10
  • N is an integer of 1 or more.
  • the half length (L/2) of the circumferential length L of the conductive frame 70 is " ⁇ /4 ⁇ k ⁇ ( 2 ⁇ N+1)′′ may not necessarily be substantially the same.
  • the windowpane 100A preferably has a ground conductor portion 75 at a location away from the power supply portions 80 and 81, as shown in FIG.
  • the ground conductor portion 75 is an example of a ground conductor portion that is electrically connected to the conductive frame 70 and is equivalent to the ground potential.
  • the ground conductor portion 75 is, for example, a ground electrode electrically connected to a ground potential.
  • the ground conductor portion 75 may protrude outside the conductive frame 70 in plan view of the glass plate 10 . This makes it easy to bring a conductive member such as a lead wire electrically connecting the ground potential and the ground conductor portion 75 into contact with the ground conductor portion 75 .
  • the shape of the ground conductor portion 75 is preferably square, substantially square, rectangular, substantially rectangular, or any other square or polygonal shape for mounting, but is not limited to these, and may be circular, substantially circular, elliptical, substantially elliptical, or any other circular shape. Other shapes such as
  • FIG. 3 is a diagram illustrating several path lengths along a conductive frame in a configuration with ground conductors electrically connected to the conductive frame.
  • the ground conductor portion 75 has a ground point 75 a on the conductive frame 70 .
  • L a1 be the clockwise distance along the conductive frame 70 from the power feeder 80 to the ground point 75a
  • La2 be the counterclockwise distance from the power feeder 80 along the conductive frame 70 to the ground point 75a
  • L a1 and L a2 are the actual lengths of the paths along the inner edge 71 or the outer edge 72 of the conductive frame 70 .
  • the high frequency current flowing along the conductive frame 70 is maximized at the ground point 75a.
  • L a3 and L a4 are the actual lengths of the paths along the inner edge 71 or the outer edge 72 of the conductive frame 70 .
  • At least one of the following equations 2a and 2b is preferably satisfied, and at least one of the following equations 2c and 2d is preferably satisfied in terms of improving the antenna gain of the diversity antenna DA.
  • Equation 2b ⁇ /2 ⁇ k ⁇ N 3 ⁇ /5 ⁇ k ⁇ La3 ⁇ /2 ⁇ k ⁇ N 3 + ⁇ /5 ⁇ k Equation 2c ⁇ /2 ⁇ k ⁇ N 4 ⁇ /5 ⁇ k ⁇ La4 ⁇ /2 ⁇ k ⁇ N 4 + ⁇ /5 ⁇ k 2d It is preferred to satisfy both equations 2a and 2b or both equations 2c and 2d, more preferably all of equations 2a, 2b, 2c and 2d.
  • Equation 3c ⁇ /2 ⁇ k ⁇ N 4 ⁇ /6 ⁇ k ⁇ La4 ⁇ /2 ⁇ k ⁇ N 4 + ⁇ /6 ⁇ k . . . Equation 3d It is preferred to satisfy both equations 3a and 3b or both equations 3c and 3d, more preferably all of equations 3a, 3b, 3c and 3d.
  • a diversity antenna that uses multiple antennas, it is important to ensure isolation between each antenna in order to obtain a higher diver effect.
  • the required isolation between the antennas is ensured by spatially separating a plurality of independent antennas with different feeding points.
  • a plurality of feeders are electrically commonly connected to a single conductive frame 70, so interference occurs due to the plurality of feeders.
  • a certain level of isolation is required to prevent the occurrence of
  • Lb1 and Lb2 are the actual lengths of the paths along the inner edge 71 or the outer edge 72 of the conductive frame 70;
  • the phase of the high-frequency current flowing along the conductive frame 70 via the grounding point 75a changes by 180° at the grounding point 75a. This is equivalent to a change in the electrical length from the power supply portion 80 to the power supply portion 81 via the grounding point 75a along the conductive frame 70 by ( ⁇ /2 ⁇ k).
  • the isolation between the feeder 80 and the feeder 81 is can be secured.
  • the phase difference between the signal transmitted through the path not passing through the ground point 75a and the signal transmitted through the path through the ground point 75a is shifted by 180° (an odd multiple of ⁇ /2 ⁇ k).
  • the power supply unit 81 is placed at the position, the signal from the power supply unit 80 does not leak to the power supply unit 81 . That is, it is possible to increase the isolation between the power feeding section 80 and the power feeding section 81 (in other words, reduce the coupling between the power feeding section 80 and the power feeding section 81).
  • the antenna gain of the diversity antenna DA is improved if the following equation 1e is satisfied. ⁇ /2 ⁇ k ⁇ (2 ⁇ M ⁇ 1) ⁇ /3 ⁇ k ⁇
  • ⁇ may be the wavelength in air of radio waves of some frequencies included in the predetermined frequency band received by the diversity antenna DA, and preferably, the wavelength in air of radio waves of all frequencies included in the predetermined frequency band. may be the wavelength in .
  • ⁇ may be the wavelength in air of radio waves of some frequencies included in the predetermined frequency band received by the diversity antenna DA, and preferably, the wavelength in air of radio waves of all frequencies included in the predetermined frequency band. may be the wavelength in . The same applies to ⁇ in the formulas described later.
  • the ground point 75a is preferably directly connected to the ground potential in terms of improving the antenna gain of the diversity antenna DA.
  • the ground point 75a is directly connected to the ground potential by being electrically connected to the vehicle body portion 62 such as the window frame 63 by direct coupling.
  • the ground point 75a may be electrically connected to the ground potential by capacitive coupling.
  • the shape of the conductive frame 70 is substantially quadrangular in plan view of the glass plate 10 .
  • the power supply units 80 and 81 are arranged on opposite sides (for example, right and left sides or upper and lower sides) of the conductive frame 70 to provide isolation between the power supply units 80 and 81. is easier to secure.
  • the power supply units 80 and 81 are arranged on adjacent sides of the conductive frame 70 (for example, the upper side and the right side, or the lower side and the left side), so that the power supply units 80 and 81 are isolated from each other. ration may be ensured.
  • FIG. 4 is a plan view showing a configuration example of a vehicle window glass device including a vehicle window glass according to the second embodiment.
  • FIG. 5 is a cross-sectional view showing a configuration example of a vehicle window glass device including a vehicle window glass according to the second embodiment.
  • the windowpane device 202 shown in FIG. 4 includes a vehicle windowpane 100B and a conductive window frame 63 to which the windowpane 100B is attached.
  • the glass plate 10 is attached to the window frame 63 by bonding the peripheral portion of the main surface 11 and the window frame 63 with an adhesive 64 such as urethane resin.
  • the second embodiment differs from the first embodiment in the form of the ground conductor portion 75.
  • the ground conductor portion 75 in the second embodiment has a ground conductor line 76 connected to the ground point 75a and branched and bent in two opposite directions.
  • the ground conductor line 76 is capacitively coupled with the ground potential. By providing the bent ground conductor line 76, it becomes easier to electrically connect the ground point 75a to the ground potential by capacitive coupling.
  • the ground conductor line 76 extends along the conductive frame 70 and the window frame 63 between the conductive frame 70 and the window frame 63 in a plan view of the window glass 10 .
  • the ground conductor line 76 is a T-shaped element having a ground point 75a at the lower end of the T shape, and the gap between the outer edge 72 of the conductive frame 70 and the frame side 61b of the window frame 63 is Stretch.
  • the ground conductor line 76 which is a T-shaped element, includes a portion extending from a branch point 76a at the T-shape to two open ends (first open end 76b and second open end 76c).
  • the distance (path length) from the branch point 76a to the first open end 76b is a1
  • the distance (path length) from the branch point 76a to the second open end 76c is a2.
  • the distance a1 is a length close to ( ⁇ /4 ⁇ k)
  • the conductor line up to the end 76b functions as an L-shaped open stub.
  • the same effect as in the first embodiment in which the ground point 75a is directly connected to the ground potential can be obtained.
  • the conductor wire up to the second open end 76c functions as an L-shaped open stub.
  • Equation 4a when the distance a1 satisfies the following formula 4a and the distance a2 satisfies the following formula 5a, the antenna gain of the diversity antenna DA is improved. 0.10 ⁇ a1/(k ⁇ ) ⁇ 0.30 Equation 4a 0.10 ⁇ a2/(k ⁇ ) ⁇ 0.30 Formula 5a It should be noted that it is not essential that both Equations 4a and 5a are established in order to secure the antenna gain of the diversity antenna DA. Only one of Equation 4a and Equation 5a may hold.
  • the distance a1 and the distance a2 preferably satisfy at least one of the following equations 4b and 5b, and more preferably satisfy both, in order to ensure a higher antenna gain of the diversity antenna DA. 0.15 ⁇ a1/(k ⁇ ) ⁇ 0.25 Equation 4b 0.15 ⁇ a2/(k ⁇ ) ⁇ 0.25 Expression 5b
  • FIG. 6 is a plan view showing a configuration example of a vehicle window glass device provided with a vehicle window glass according to the third embodiment.
  • the windowpane device 203 shown in FIG. 6 includes a vehicle windowpane 100C and a conductive window frame 63 to which the windowpane 100C is attached.
  • the third embodiment differs from the first embodiment in the form of the ground conductor portion 75 .
  • the ground conductor portion 75 in the third embodiment has a ground conductor line 76 connected to the ground point 75a and bent in one direction.
  • the ground conductor line 76 is capacitively coupled with the ground potential. By providing the bent ground conductor line 76, it becomes easier to electrically connect the ground point 75a to the ground potential by capacitive coupling.
  • the ground conductor line 76 extends along the conductive frame 70 and the window frame 63 between the conductive frame 70 and the window frame 63 in a plan view of the window glass 10 .
  • the ground conductor line 76 is an L-shaped element with a ground point 75 a as an end, and extends across the gap between the outer edge 72 of the conductive frame 70 and the frame side 61 b of the window frame 63 .
  • the ground conductor line 76 which is an L-shaped element, includes a portion extending from a bending point 76d in the L shape to an open end 76b.
  • a be the distance (path length) from the bending point 76d to the open end 76b.
  • the conductor line up to 1 functions as an L-shaped open stub.
  • Equation 6a the antenna gain of the diversity antenna DA is improved. 0.10 ⁇ a/(k ⁇ ) ⁇ 0.30 Formula 6a
  • the distance a satisfies the following formula 6b in order to secure a higher antenna gain of the diversity antenna DA. 0.10 ⁇ a/(k ⁇ ) ⁇ 0.25 Equation 6b
  • FIG. 7 is a diagram illustrating several path lengths along the conductive frame in a fourth embodiment in which the conductive frame does not include a portion at the same potential as ground.
  • a windowpane 100D shown in FIG. 7 includes a conductive frame 70 that does not include a portion that has the same potential as the ground (a portion such as the ground conductor portion 75 described above).
  • the half length (L/2) of the circumferential length L of the inner edge 71 or the outer edge 72 of the conductive frame 70 is " ⁇ /4 ⁇ k ⁇ (2 ⁇ N+1)′′. Therefore, the circumferential length of the conductive frame 70 is L, the clockwise distance from the power feeding portion 80 to the power feeding portion 81 along the conductive frame 70 is L c1 , and the distance from the power feeding portion 80 to the power feeding portion 81 along the conductive frame 70 is L c1 .
  • Lc2 be the counterclockwise distance.
  • L c1 and L c2 are the actual lengths of the paths along the inner edge 71 or the outer edge 72 of the conductive frame 70 .
  • ⁇ be the radio wave in the frequency band transmitted and received by the diversity antenna DA
  • k be the wavelength shortening rate of the glass plate 10
  • N and M be integers of 1 or more.
  • FIGS. 8 to 13 are exploded views showing configuration examples of the vehicle window glass according to each embodiment.
  • a window glass such as the window glass 100A described above may have any of the laminated structures shown in FIGS. 8 to 13 .
  • each of the window glasses 101 to 106 may have a light shielding portion 50 that is directly or indirectly arranged on the main surface 11 of the glass plate 10 .
  • the light shielding part 50 is, for example, a light shielding film that shields visible light.
  • Specific examples of the light shielding film include ceramics such as a black ceramics film.
  • the light shielding portion 50 overlaps at least a portion of the conductive frame 70 in plan view of the glass plate 10 . As a result, when the windowpane 101 is viewed from the Z-axis direction (outside or inside the vehicle), the overlapped portion becomes difficult to see, so the appearance of the windowpane 101 and the design of the vehicle is improved.
  • the light shielding part 50 is arranged between the glass plate 10 and the conductive frame 70.
  • the light shielding part 50 may be arranged between the conductive layer 30 and the conductive frame 70 .
  • the conductive frame 70 may be arranged between the light shielding portion 50 and the conductive layer 30 .
  • the light shielding part 50 may be arranged between the glass plate 10 and the conductive layer 30 (for example, in FIG. 11, the structure without the glass plate 20 and the intermediate film 40).
  • the window glasses 103, 104, 105 and 106 may have the glass plate 20 on the side of the glass plate 10 on which the conductive layer 30 is arranged.
  • the glass plate 20 is an example of a second glass plate.
  • glass plate 20 is placed between glass plate 10 and conductive frame 70 .
  • glass plate 20 is positioned between conductive layer 30 and conductive frame 70 .
  • glass plate 20 is positioned between glass plate 10 and conductive layer 30 .
  • the intermediate film 40 according to each embodiment shown in FIGS. 10 to 13 is a transparent or translucent dielectric interposed between the glass plate 10 and the glass plate 20 .
  • the glass plate 10 and the glass plate 20 are bonded by the intermediate film 40 .
  • the intermediate film 40 include thermoplastic polyvinyl butyral (PVB), ethylene vinyl acetate copolymer (EVA), and the like.
  • PVB thermoplastic polyvinyl butyral
  • EVA ethylene vinyl acetate copolymer
  • the dielectric constant of the intermediate film 40 is preferably 2.4 or more and 3.5 or less.
  • the intermediate film 40 may be placed between the conductive layer 30 and the glass plate 20 or between the glass plate 10 and the conductive layer 30 . Further, the intermediate film 40 may be arranged both between the conductive layer 30 and the glass plate 20 and between the glass plate 10 and the conductive layer 30, as shown in FIG.
  • Window glass 106 shown in FIG. 13 is the window glass shown in FIG. 10 in that intermediate film 40 includes intermediate film 40A and intermediate film 40B, and conductive layer 30 is provided between intermediate film 40A and intermediate film 40B. 103 is different.
  • the intermediate film 40A and the intermediate film 40B are also referred to as the first intermediate film 40A and the second intermediate film 40B, respectively.
  • the conductive layer 30 is not limited to one layer, and may have multiple layers. That is, only one light control film, which will be described later, may be provided, or a plurality of light control films may be provided.
  • the conductive layer 30 may be a conductive film included in a light control film that can actively change the visible light transmittance of the opening of the windowpane 106 by applying an AC voltage.
  • the light control film has, for example, a molecular layer (not shown) having optical anisotropy between a pair of opposing resin substrates (not shown).
  • a conductive film (not shown) and an electrode (not shown) electrically connected to the conductive film are provided on the main surface of each resin substrate. The light control film is driven by applying a voltage between the pair of conductive layers via the electrodes.
  • the resin substrate is made of, for example, transparent resin.
  • the resin substrate may be made of polyethylene terephthalate (PET), polycarbonate (PC), or cycloolefin polymer (COP), for example.
  • PET polyethylene terephthalate
  • PC polycarbonate
  • COP cycloolefin polymer
  • the above-described resins may be used in combination as the pair of resin substrates facing each other.
  • the thickness of the resin substrate is, for example, in the range of 5 ⁇ m to 500 ⁇ m, preferably in the range of 100 ⁇ m to 200 ⁇ m, and more preferably in the range of 50 ⁇ m to 150 ⁇ m.
  • the conductive film disposed on each main surface of the pair of opposing resin substrates is, for example, a transparent conductive oxide, a transparent conductive polymer, a laminated film of a metal layer and a dielectric layer, silver nanowires, and silver or copper. may be formed of a metal mesh or the like.
  • the thickness of the conductive film may range, for example, from 200 nm to 2 ⁇ m.
  • Liquid crystals are examples of molecules having optical anisotropy arranged between a pair of opposing resin substrates. That is, for example, a liquid crystal layer may be used as the molecular layer having optical anisotropy.
  • the liquid crystal layer includes, for example, polymer dispersed liquid crystal (PDLC), polymer network liquid crystal (PNLC), and guest-host liquid crystal. Alternatively, iodine or the like may be used as the molecule having optical anisotropy.
  • the light management film may have a Suspended Particle Device (SPD) containing such molecular layers.
  • SPD Suspended Particle Device
  • FIG. 14 is a plan view showing an example of a simulation model of a vehicle window glass device provided with the vehicle window glass according to each embodiment. Next, the result of simulating the operation of the diversity antenna DA using the simulation model of FIG. 14 will be described.
  • FIG. 15 is a diagram showing an example of measurement results of the reflection coefficient S11 with respect to the path length from the feeding section to the ground point in vertical feeding.
  • FIG. 16 is a diagram showing an example of measurement results of the reflection coefficient S11 and the transmission coefficient S21 with respect to the path difference between the feeding parts in the vertical feeding.
  • the vertical power supply is a power supply form in which the power supply part 80 is arranged in the frame part 70a of the conductive frame 70, the power supply part 81 is arranged in the frame part 70b of the conductive frame 70, and the grounding point 75a is arranged in the frame part 70d of the conductive frame 70 in FIG. is.
  • the horizontal axis represents the clockwise distance L a1 from the power supply section 80 along the conductive frame 70 to the grounding point 75a, or the counterclockwise distance from the power feeding section 80 along the conductive frame 70 to the grounding point 75a.
  • the distance La2 of is designated as the distance La for convenience and is expressed as La/(k ⁇ ).
  • La1_S11 represents S11 for distance La1
  • La2_S11 represents S11 for distance La2 .
  • the horizontal axes in FIGS. 15 and 16 are values obtained by normalizing the length when measured with a 205 MHz radio wave (wavelength ⁇ 1462 mm in air).
  • the reflection coefficient S11 as viewed from the feeding unit 80 is low, and the diversity antenna DA resonates.
  • the transmission coefficient S21 from the power supply unit 80 to the power supply unit 81 is low, A result was obtained in which the isolation between the power feeding section 80 and the power feeding section 81 was ensured.
  • FIG. 17 is a diagram showing an example of measurement results of the reflection coefficient S11 with respect to the path length from the feeding section to the ground point in left and right feeding.
  • FIG. 18 is a diagram showing an example of measurement results of the reflection coefficient S11 and the transmission coefficient S21 with respect to the path difference between the feeding portions in left and right feeding.
  • the left and right power feeding is a power feeding mode in which the power feeding portion 80 is arranged on the frame portion 70c of the conductive frame 70, the power feeding portion 81 is arranged on the frame portion 70d of the conductive frame 70, and the grounding point 75a is arranged on the frame portion 70b of the conductive frame 70.
  • the horizontal axis of FIG. 17 and the horizontal axis of FIG. 18 are the same as the horizontal axis of FIG. 15 and the horizontal axis of FIG. 16, respectively.
  • FIGS. 17 and 18 are the same as the above-described measurement conditions of FIGS. 15 and 16.
  • the diversity antenna DA was found to resonate.
  • FIG. 19 shows an example of the measurement result of the antenna gain for horizontally polarized waves when the conductive frame does not include a portion that is at the same potential as the ground, and two feeding parts are arranged on adjacent sides of the conductive frame. It is a figure which shows.
  • FIG. 20 shows an example of the measurement result of the antenna gain for vertically polarized waves when the conductive frame does not include a portion that is at the same potential as the ground, and two feeding parts are arranged on adjacent sides of the conductive frame. It is a figure which shows.
  • the power supply in FIGS. 19 and 20 is a power supply mode in which the power supply part 80 is arranged in the frame part 70b of the conductive frame 70 and the power supply part 81 is arranged in the frame part 70d of the conductive frame 70 in FIG.
  • Figures 19 and 20 show the measurement results at 205 MHz within the DAB Band III band.
  • P1_H. Pol. indicates the antenna gain (directivity) measured at the feeding section 80 with horizontal polarization
  • P2_H. Pol. indicates the antenna gain (directivity) measured at the feeding section 81 with horizontal polarization.
  • P1_V. Pol. denotes the antenna gain (directivity) measured at the feed section 80 with vertical polarization
  • P2_V. Pol. indicates the antenna gain (directivity) measured at the feeding section 81 with vertical polarization.
  • the unit of numerical values in FIGS. 19 and 20 is [dBi].
  • the gain of the horizontally polarized wave can be increased compared to the case of using the feeder 80 arranged on the horizontal side.
  • the gain of the vertically polarized wave can be increased compared to the case of using the feeder 81 arranged on the vertical side. Therefore, by synthesizing the high-frequency signal obtained from the power supply unit 80 and the high-frequency signal obtained from the power supply unit 81, polarized waves such as obliquely polarized waves and circularly polarized waves can be received with high gain.

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Abstract

L'invention concerne un verre à vitre de véhicule comportant une couche conductrice et pouvant émettre et recevoir des ondes radio d'une fréquence prédéfinie à un gain élevé.　Le verre à vitre de véhicule comprend : une première plaque de verre comportant une surface principale ; une couche conductrice disposée directement ou indirectement sur la surface principale de la première plaque de verre ; un cadre conducteur disposé directement ou indirectement sur la surface principale de la première plaque de verre et comportant un bord interne le long du bord externe de la couche conductrice dans une vue en plan de la première plaque de verre ; une première unité d'alimentation électrique connectée électriquement au cadre conducteur ; et une seconde unité d'alimentation électrique connectée électriquement au cadre conducteur. Le cadre conducteur présente une résistance électrique inférieure à celle de la couche conductrice, et forme une antenne à réception simultanée comportant la première unité d'alimentation électrique et la seconde unité d'alimentation électrique en tant qu'unités d'alimentation électrique.
PCT/JP2022/027555 2021-07-19 2022-07-13 Verre à vitre de véhicule et dispositif sur verre à vitre de véhicule WO2023002896A1 (fr)

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DE112022003592.7T DE112022003592T5 (de) 2021-07-19 2022-07-13 Fahrzeugfensterglas und fahrzeugfensterglasvorrichtung

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Citations (4)

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Publication number Priority date Publication date Assignee Title
JP2005012587A (ja) * 2003-06-20 2005-01-13 Nippon Sheet Glass Co Ltd 車両用ガラスアンテナ装置
JP2021512571A (ja) * 2018-03-05 2021-05-13 ピッツバーグ グラス ワークス、エルエルシー 加熱機能及びアンテナ機能を有する窓アセンブリ
WO2022004559A1 (fr) * 2020-06-29 2022-01-06 Ａｇｃ株式会社 Vitre de véhicule et structure de véhicule
JP2022117929A (ja) * 2021-02-01 2022-08-12 Ａｇｃ株式会社 車両用窓ガラス及び車両用窓ガラス装置

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7847745B2 (en) 2007-11-20 2010-12-07 Centre Luxembourgeois De Recherches Pour Le Verre Et La Ceramique S.A. (C.R.V.C.) Windshield antenna and/or vehicle incorporating the same
JP2019006436A (ja) 2017-06-22 2019-01-17 凸版印刷株式会社 チャック付き包装袋およびチャック付き包装袋の製造方法

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2005012587A (ja) * 2003-06-20 2005-01-13 Nippon Sheet Glass Co Ltd 車両用ガラスアンテナ装置
JP2021512571A (ja) * 2018-03-05 2021-05-13 ピッツバーグ グラス ワークス、エルエルシー 加熱機能及びアンテナ機能を有する窓アセンブリ
WO2022004559A1 (fr) * 2020-06-29 2022-01-06 Ａｇｃ株式会社 Vitre de véhicule et structure de véhicule
JP2022117929A (ja) * 2021-02-01 2022-08-12 Ａｇｃ株式会社 車両用窓ガラス及び車両用窓ガラス装置

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