Window pane for a vehicle and window pane device for a vehicle

Abstract

Window pane (101, 102) for a vehicle, comprising: a glass plate (10) which has a transparent region (14) which allows visible light to pass through and a light-shielding film (13) which blocks visible light, which is arranged around the transparent region (14); a dielectric (20) which has a first surface (21) which is directed towards the glass plate (10) and a second surface (22) opposite the first surface; a planar conductor (50) which is arranged between the glass plate (10) and the first surface of the dielectric (20); a positive electrode (57) which is connected to the planar conductor (50); a negative electrode (58) which is connected to the plane conductor (50); one or more supply electrode(s) (32, 33, 35, 39) which is / are arranged on the second surface (22) of the dielectric (20); and one or more grounding electrode(s) (37, 38) which is / are arranged on the second surface (22) of the dielectric (20), wherein the planar conductor (50) generates heat by means of an electrical voltage which is applied between the positive electrode (57) and the negative electrode (58), wherein the feed electrodes (32, 33, 35, 39) and the grounding electrodes (37, 38) are arranged to be directed towards the planar conductor (50) via the dielectric (20) to form an inverted F antenna, such that the planar conductor (50) receives at least electromagnetic waves of one VHF band, and wherein the positive electrode (57), the negative electrode (58), the supply electrodes (32, 33, 35, 39) and the grounding electrodes (37, 38) are arranged to overlap with the light-blocking film (13) in a planar view.

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention

[0001] The disclosure herein relates generally to a window pane for a vehicle and a window pane apparatus for a vehicle. 2. Description of the state of the art

[0002] Vehicle windows are required to be equipped with multi-purpose antennas, such as AM transmission, FM transmission, DAB (Digital Audio Broadcast), keyless entry control systems, digital TV transmission, or wide-frequency 4G communication. Due to the limited area of ​​the vehicle window dedicated to antennas, antennas often have a complicated structure and poor appearance.

[0003] Vehicle windows (particularly rear windows) provided with transparent or permeable conductive films that heat the window panes to prevent them from icing or fogging were known. Visibility and appearance of window panes with conductive films are better than those of window panes provided with multiple heating wires. Vehicle windows featuring such conductive films and multipurpose antennas were known (see, for example, US Pat. No. 9,837,699 B2).

[0004] US 2016 / 0 006 112 A1 describes a windshield comprising a glass plate, a dielectric, an electrothermal layer disposed between the glass plate and the dielectric and including a conductive layer and strip electrodes with a lower resistance than that of the conductive layer, an antenna including a pair of electrodes arranged to oppose the electrothermal layer above the dielectric, and a slot, at least a portion of which is formed in one of the strip electrodes such that the slot is disposed between the pair of electrodes in plan view. The strip electrodes are arranged along at least two opposite outer edges of the conductive layer and are DC-coupled to the conductive layer such that the conductive layer is excited via the strip electrodes.One end of the slot is an open end that is open at an outer edge of the electrothermal layer.

[0005] US 2017 / 0 317 399 A1 describes an electrically heatable antenna pane comprising a transparent pane and an electrical heating layer extending over a portion of the pane's surface. The pane serves, at least in sections, as a planar antenna for receiving and / or transmitting electromagnetic waves. A first busbar and a second busbar, which are electrically connected to a voltage source and electrically conductively connected to the heating layer, are also described. SUMMARY OF THE INVENTION[Technical Problem]

[0006] In the vehicle window pane described in US Pat. No. 9,837,699 B2, in which antenna elements are arranged near the right and left edges of the vehicle window pane, a portion of the antenna elements remains within a driver's field of vision. When the antennas are covered with a black coating to improve their appearance, the field of vision becomes narrower between the black coating near the right and left edges.

[0007] Taking the above-described problems into consideration, the disclosure of the present application aims to provide a window pane for a vehicle having an antenna gain at least for a VHF (Very High Frequency) band, a good appearance, a sufficient field of view, and an anti-fogging effect; and an apparatus incorporating the window pane for a vehicle. [Solution to the problem]

[0008] The technical problem of the present disclosure is solved by a window pane for a vehicle and a window pane device for a vehicle having the features of the independent claims. Further embodiments are defined in the dependent claims. [Effect of the invention]

[0009] According to the disclosed technique, a window pane for a vehicle having an antenna gain at least for a VHF band, a good appearance, a sufficient field of view, and an anti-fogging effect, and an apparatus incorporating the window pane for a vehicle are provided. BRIEF DESCRIPTION OF THE DRAWINGS Fig. 1 is an exploded perspective view showing an example of a configuration of a window glass for a vehicle according to a first embodiment; Fig.2 is a plan view showing an example of the configuration of the window glass (device) for a vehicle according to the first embodiment; Fig. 2A is a plan view illustrating an example of the configuration of the window glass (device) for a vehicle according to a first modification of the first embodiment; Fig. 2B is a plan view illustrating an example of the configuration of the window glass (device) for a vehicle according to a second modification of the first embodiment; Fig. 2C is an enlarged plan view showing an example of the configuration of the window glass (device) for a vehicle according to a third modification of the first embodiment; Fig. 2D is an enlarged plan view showing an example of the configuration of the window glass (device) for a vehicle according to a fourth modification of the first embodiment; Fig. 2E is an enlarged cross-sectional view showing an example of the configuration of the window glass for a vehicle according to the fourth modification of the first embodiment; Fig. 2F is an enlarged plan view showing an example of the configuration of the window glass for a vehicle according to a fifth modification of the first embodiment; Fig. 2G is an enlarged cross-sectional view showing an example of the configuration of the window glass for a vehicle according to the fifth modification of the first embodiment; Fig. 2H is an enlarged plan view illustrating an example of the configuration of the window glass for a vehicle according to a sixth modification of the first embodiment; Fig.3 is an exploded perspective view showing an example of a configuration of a window glass for a vehicle according to a second embodiment; Fig. 4 is a plan view showing an example of the configuration of the window glass (device) for a vehicle according to the second embodiment; Fig. 4A is a plan view illustrating an example of the configuration of the window glass (device) for a vehicle according to a modification of the second embodiment; Fig. 5 is a diagram illustrating another example of the configuration of the supply electrode according to the embodiment; Fig. 6 is a cross-sectional view illustrating a first example of the configuration of the window glass for a vehicle according to the embodiment; Fig.7 is a cross-sectional view illustrating a second example of the configuration of the window glass for a vehicle according to the embodiment; Fig. 8 is a cross-sectional view illustrating a third example of the configuration of the window glass for a vehicle according to the embodiment; Fig. 9 is a cross-sectional view illustrating a fourth example of the configuration of the window glass for a vehicle according to the embodiment; Fig. 10 is a cross-sectional view illustrating a fifth example of the configuration of the window glass for a vehicle according to the embodiment; Fig. 11 is a cross-sectional view illustrating a sixth example of the configuration of the window glass for a vehicle according to the embodiment; Fig.12 is a diagram showing an example of an equivalent circuit from a planar conductor to an amplifier; Fig. 13 is a diagram showing an example of a simulation result for a relationship between an input capacitance of an amplifier and a coupling capacitance when a coupling loss is 1 dB; Fig. 14 is a diagram showing an example of a simulation result for a relationship between an input capacitance of an amplifier and a coupling capacitance when the coupling loss is 0.5 dB; and Fig. 15 is a diagram showing an example of a relationship between an area of ​​a feeding electrode and an antenna gain. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0010] Hereinafter, embodiments according to the present disclosure will be described with reference to the drawings. Note that in each embodiment, a direction such as parallel, right angle, orthogonal, horizontal, vertical, upward, downward, right-left, or the like allows a deviation sufficient to maintain the effect of the present invention. A shape of a corner is not limited to a right angle, and the corner may be rounded. The present invention is preferably applied to a rear glass arranged in a rear part of a vehicle. The application of the present invention is not limited to the rear glass, and the present invention can also be applied to a windshield (front glass), a side glass, a sunroof, or the like.

[0011] Hereinafter, a direction parallel to an X axis (X-axis direction), a direction parallel to a Y axis (Y-axis direction), and a direction parallel to a Z axis (Z-axis direction) are assumed to be a right-left direction (horizontal direction) of a glass plate, an up-down direction (vertical direction) of the glass plate, and a direction orthogonal to a surface of the glass plate (normal direction). The X-axis direction is orthogonal to the Y-axis direction and the Z-axis direction, which are orthogonal to each other. [First embodiment]

[0012] Fig. 1 is an exploded perspective view showing an example of a configuration of a window glass for a vehicle according to a first embodiment. Fig.Figure 1 shows the Z axis from a vehicle interior side of the window pane to a vehicle exterior side of the window pane. The window pane 101 is a laminated glass in which a vehicle exterior glass 10 and a vehicle interior glass 20 are laminated via an intermediate film 40. Fig. 1 illustrates members or elements of the window pane 101 which are separated in the normal direction to the surface of the glass plate 10 or the glass plate 20.

[0013] The window pane 101 includes the glass plate 10 arranged on the vehicle outside, the glass plate 20 arranged on the vehicle inside, and a planar conductor 50 arranged inside the laminated glass.

[0014] The glass plates 10 and 20 are transparent dielectrics that have the shape of a flat plate. At least one of the glass plates 10 and 20 can be transparent or clear. Glass plate 10 is an example of a first glass plate, and glass plate 20 is an example of a second glass plate.

[0015] The glass panel 10 has a panel surface 11 and a panel surface 12 opposite each other. The panel surface 11 is a surface of the vehicle interior of the glass panel 10, and the panel surface 12 is a surface of the vehicle exterior of the glass panel 10. The panel surface 12 is the surface of the vehicle exterior of the laminated glass. The glass panel 10 has a transmissive region 14 that transmits visible light. A light-shielding film 13 that shields visible light is disposed on the panel surface 12 outside the transmissive region 14. The light-shielding film will be described later.

[0016] The glass panel 20 has a panel surface 21 facing the panel surface 11 of the glass panel 10 and a panel surface 22 opposite the panel surface 21. The panel surface 21 is a vehicle exterior surface of the glass panel 20, and the panel surface 22 is a vehicle interior surface of the glass panel 20. The panel surface 22 is the vehicle interior surface of the laminated glass. The panel surface 21 is an example of a first surface, and the panel surface 22 is an example of a second surface.

[0017] The intermediate film 40 is a transparent or transmissive dielectric disposed between the glass plate 10 and the glass plate 20. The glass plate 10 and the glass plate 20 are bonded to each other via the intermediate film 40. The intermediate film 40 is made, for example, of a thermoplastic polyvinyl butyral. The relative permittivity of the intermediate film 40 preferably falls within a range of 2.8 to 3.5.

[0018] Fig. Figure 1 illustrates the planar conductor 50 arranged between the glass plate 10 and the glass plate 20. In the embodiment shown in Fig.As illustrated in Figure 1, the planar conductor 50 is disposed between the plate surface 11 of the glass plate 10 and the plate surface 21 of the glass plate 20. The window pane 101 includes a positive electrode 57 connected to the planar conductor 50 and a negative electrode 58 connected to the planar conductor 50. The planar conductor 50 generates heat when an electrical voltage is applied between the positive electrode 57 and the negative electrode 58. According to the heat from the planar conductor 50, the window pane 101 is prevented from freezing and fogging.

[0019] The positive electrode 57 is connected to a left edge of the planar conductor 50, and the negative electrode 58 is connected to a right edge of the planar conductor 50. The positive electrode 57 and the negative electrode 58 may be arranged between the plate surface 11 and the plate surface 21 (see Fig. 1). Alternatively, both the positive electrode 57 and the negative electrode 58 may be arranged on the plate surface 22 (see Fig.2). When the positive electrode 57 is located at the left edge of the plate surface 22, as viewed from the vehicle interior of the window glass, one end of a flat electric wire 53 is connected to the left edge of the flat conductor 50, and the other end of the flat electric wire 53 is connected to the positive electrode 57. When the negative electrode 58 is located at the right edge of the plate surface 22, as viewed from the vehicle interior of the window glass, one end of a flat electric wire 54 is connected to the right edge of the flat conductor 50, and the other end of the flat electric wire 54 is connected to the negative electrode 58.

[0020] In the embodiment shown in Fig. 1, the planar conductor 50 forms a non-separated conductor surface. As shown in Fig.As illustrated in Figure 1, the planar conductor 50 may include a conductive film 55 and a pair of bus bars 51 and 52 connected to the conductive film 55. The conductive film 55 is disposed between the intermediate film 40 and the glass plate 20 and is made of a transparent or transmissive conductor. The conductive film 55 includes a metal film such as an Ag film, a metal oxide film such as ITO (indium tin oxide), a resin film containing conductive fine particles, a laminated body containing various types of films, or the like.

[0021] The conductive film 55 may be prepared by coating a conductive material on a plastic film such as polyethylene terephthalate by a deposition process.

[0022] The conductive film 55 is disposed between the pair of busbars 51 and 52 and heats the windowpane 101. According to a DC voltage applied between the busbars 51 and 52, the conductive film 55 heats the windowpane 101. Thus, melting of ice and snow and removal of fog on the windowpane 101 are performed. For example, the busbar 51, which is disposed on the left edge of the flat conductor 50 as viewed from the vehicle interior of the windowpane, is connected to a positive electrode of a DC power source via the flat electric cable 53. The busbar 52, which is disposed on the right edge of the flat conductor 50 as viewed from the vehicle interior of the windowpane, is connected to a negative electrode of the DC power source via the flat electric cable 54.

[0023] The window pane 101 further includes a supply electrode 33 and a grounding electrode 37 arranged on the surface of the vehicle interior of the laminated glass. The supply electrode 33 is an example of a first supply electrode. The supply electrode 33 is, for example, a conductor pattern on the plate surface 22. The grounding electrode 37 is an example of a first grounding electrode. The grounding electrode 37 is, for example, a conductor pattern on the plate surface 22. As shown in Fig.As illustrated in Figure 1, the supply electrode 33 and the grounding electrode 37 are arranged around the left edge of the plate surface 22, as viewed from the vehicle interior of the window glass, and have rectangular shapes. The supply electrode 33 and the grounding electrode 37 may have other shapes, such as circular or polygonal shapes.

[0024] The feeding electrode 33 and the grounding electrode 37 are directed toward the planar conductor 50 via the glass plate 20, so that the planar conductor 50 receives at least electromagnetic waves of the VHF band. At least a portion of the planar conductor 50 functions as a radiation conductor that receives electromagnetic waves of the VHF band. The feeding electrode 33 and the grounding electrode 37, which are directed toward the planar conductor 50 via the glass plate 20, form an inverted-F antenna to which power is supplied via capacitive coupling. The feeding electrode 33 and the grounding electrode 37 are directed toward the planar conductor 50 via the glass plate 20, so that the inverted-F antenna that receives at least electromagnetic waves of the VHF band is formed. Thus, the window pane 101 has an antenna gain for the VHF band.

[0025] The VHF band is a frequency band that falls within a range of 30 MHz to 300 MHz. Electromagnetic waves of the VHF band include, for example, FM transmission waves and DAB Band III electromagnetic waves. The feeding electrode 33 and the grounding electrode 37 may be directed toward the planar conductor 50 via the glass plate 20 so that the planar conductor 50 receives at least FM transmission waves. Alternatively, the feeding electrode 33 and the grounding electrode 37 may be directed toward the planar conductor 50 via the glass plate 20 so that the planar conductor 50 receives at least DAB Band III electromagnetic waves.

[0026] An antenna gain for FM transmission waves is preferably -15 dB or more, regardless of the polarization of the electromagnetic waves, to obtain sufficient reception sensitivity, and more preferably -12 dB or more. Furthermore, an antenna gain for DAB Band III electromagnetic waves is preferably -10 dB or more, regardless of the polarization of the electromagnetic waves, to obtain sufficient reception sensitivity, and more preferably -7 dB or more.

[0027] The supply electrode 33 can be configured to receive at least electromagnetic waves of the UHF (Ultra High Frequency) band. The supply electrode 33 functions as a radiation conductor that receives at least electromagnetic waves of the UHF band. The supply electrode 33 provides an antenna for both the VHF and UHF bands.

[0028] The UHF band is a frequency band that falls within a range of 300 MHz to 3 GHz. Electromagnetic waves of the UHF band include, for example, terrestrial digital television waves and L-band electromagnetic waves of DAB. Thus, the feeding electrode 33 can be configured to receive at least terrestrial digital television waves. Alternatively, the feeding electrode 33 can be configured to receive at least L-band electromagnetic waves of DAB.

[0029] An antenna gain for terrestrial digital television (DTV) waves is preferably -10 dB or more, regardless of polarizations of electromagnetic waves, for obtaining sufficient reception sensitivity, and more preferably -7 dB or more.

[0030] At least a part of the supplying electrode 33, which in Fig.1, is directed to at least one of the bus bar 51 and the conductive film 55 via the glass plate 20. A first input unit of an amplifier 60 is connected to the supplying electrode 33. At least a part of the grounding electrode 37 is directed to at least one of the bus bar 51 and the conductive film 55 via the glass plate 20. The grounding electrode 37 is connected to the ground level. Thus, a signal output from the planar conductor 50, which receives electromagnetic waves, is input to the first input unit of the amplifier 60 via a capacitive coupling between the planar conductor 50 and the supplying electrode 33. A signal output from the supplying electrode 33, which receives electromagnetic waves, is also input to the first input unit of the amplifier 60.The signal input to the first input unit is output from the amplifier 60, passing through a bandpass filter.

[0031] The window pane 101 may be provided with a supply electrode 35 and a grounding electrode 38, which are arranged on the inner surface of the vehicle and the surface of the vehicle interior of the laminated glass, respectively. The supply electrode 35 is an example of the first supply electrode. The supply electrode 35 is, for example, a conductor pattern on the plate surface 22. The grounding electrode 38 is an example of a first grounding electrode. The grounding electrode 38 is, for example, a conductor pattern on the plate surface 22. As shown in Fig.As illustrated in Figure 1, the supply electrode 35 and the grounding electrode 38 are arranged around the right edge of the plate surface 22, as viewed from the vehicle interior of the window glass, and have rectangular shapes. The supply electrode 35 and the grounding electrode 38 may have other shapes, such as circular shapes or polygonal shapes.

[0032] A diversity antenna or anti-fading antenna is formed by the feeding electrode 35, which has the same structure as the feeding electrode 33, and the grounding electrode 38, which has the same structure as the grounding electrode 37. A description of the structure of the feeding electrode 35 and the grounding electrode 38 is omitted because the descriptions of the structure of the feeding electrode 33 and the grounding electrode 37 can be applied.

[0033] At least a part of the supplying electrode 35, which in Fig. 1 is directed to at least one of the bus bar 52 and the conductive film 55 via the glass plate 20. An input unit of an amplifier 61 is connected to the supplying electrode 35. At least a part of the grounding electrode 38 is directed to at least one of the bus bar 52 and the conductive film 55 via the glass plate 20. The grounding electrode 38 is connected to the ground level. Thus, a signal output from the planar conductor 50, which receives electromagnetic waves, is input to the input unit of the amplifier 61 via a capacitive coupling between the planar conductor 50 and the supplying electrode 35. A signal output from the supplying electrode 35, which receives electromagnetic waves, is also input to the input unit of the amplifier 61.

[0034] The window pane 101 may be provided with a supply electrode 32 arranged on the inner surface of the laminated glass. The supply electrode 32 is an example of a second supply electrode. The supply electrode 32 is, for example, a conductor pattern on the plate surface 22. As shown in Fig. As illustrated in Figure 1, the supply electrode 32 is arranged around the upper edge of the plate surface 22, as viewed from the vehicle interior of the window glass, and has a rectangular shape. The shape is not limited to this, and the supply electrode 32 may have a circular shape, a polygonal shape, or the like.

[0035] The supply electrode 32 is directed toward the planar conductor 50 via the glass plate 20, so that the planar conductor 50 receives at least electromagnetic waves of the MF (medium frequency) band. That is, at least a portion of the planar conductor 50 functions as a radiation conductor that receives or receives electromagnetic waves of the MF band.

[0036] Alternatively, the supply electrode 32 may be directed toward the planar conductor 50 via the glass plate 20, so that the planar conductor 50 receives at least electromagnetic waves of the MF band and electromagnetic waves of the HF (radio frequency) band. That is, at least a portion of the planar conductor 50 functions as a radiation conductor that receives electromagnetic waves of the MF band and electromagnetic waves of the HF band.

[0037] With the feeding electrode 32 having the above-described structure, an antenna that also receives electromagnetic waves of the MF band (or electromagnetic waves of the MF band and electromagnetic waves of the HF band) is formed. The MF band is a frequency band falling within a range of 300 kHz to 3 MHz. Electromagnetic waves of the MF band include, for example, AM transmission waves. The HF band is a frequency band falling within a range of 3 MHz to 30 MHz. The HF band is also referred to as an SW (shortwave) band. The feeding electrode 32 and the planar conductor 50 can be configured to receive at least AM transmission waves. An electric voltage of AM transmission waves is preferably 15 dBµV or more for obtaining sufficient reception sensitivity, and more preferably 18 dBµV or more.

[0038] At least a part of the supplying electrode 32, which in Fig.1, is directed toward at least a portion of the upper edge of the conductive film 55 via the glass plate 20. A second input unit of the amplifier 60 is connected to the supply electrode 32. Thus, a signal output from the planar conductor 50, which receives electromagnetic waves, is input to the second input unit of the amplifier 60 via a capacitive coupling between the planar conductor 50 and the supply electrode 32.

[0039] The window pane 101 may be provided with a supply electrode 39 disposed on the interior surface of the laminated glass. The supply electrode 39 is, for example, a conductor pattern on the plate surface 22 and is disposed outside the supply electrode 32. As shown in Fig.As illustrated in Figure 1, the supply electrode 39 is arranged around the upper edge of the plate surface 22, as viewed from the vehicle interior of the window glass, and has a rectangular shape. The shape is not limited to this, and the supply electrode 39 may have a circular shape, a polygonal shape, or the like.

[0040] The supply electrode 39 can be configured to receive at least electromagnetic waves of the UHF band. That is, the supply electrode 39 can be configured so that the supply electrode 39 itself functions as a radiation conductor that receives electromagnetic waves of the UHF band. Thus, a UHF antenna that receives three channels of signals using the supply electrodes 33, 35, and 39 is formed.

[0041] A part of the supplying electrode 39, which is in Fig.1, may be directed toward the conductive film 55 via the glass plate 20, or may not be directed toward the conductive film 55. A signal output from the supply electrode 39, which receives electromagnetic waves, is input to the input unit of the amplifier 62.

[0042] The glass plate 10 is provided with a light-shielding film 13 that shields visible light. The light-shielding film 13 is arranged along the outer peripheral edge of the glass plate 10. The light-shielding film 13 overlaps with the pair of bus bars 51 and 52; the positive electrode 57; the negative electrode 58; the supply electrodes 32, 33, 35, and 39; and the grounding electrodes 37 and 38 in the thickness direction of the glass plate 10. The light-shielding film 13 specifically includes a ceramic film, such as a black ceramic film. Portions of the pair of bus bars 51 and 52; the positive electrode 57; the negative electrode 58; the supply electrodes 32, 33, 35, and 39; and the grounding electrodes 37 and 38, which are connected to the light-shielding film 13 in the plan view and the plane view of theoverlapping the glass plate 10 are not detected when the window pane 101 is viewed from the vehicle's exterior. In this way, the design characteristics of the window pane 101 and the vehicle are enhanced.

[0043] As described above, in the plan view of the window glass 101, the pair of bus bars 51 and 52; the positive electrode 57; the negative electrode 58; the supplying electrodes 32, 33, 35, and 39; and the grounding electrodes 37 and 38 overlap with the light-shielding film 13. Thus, the appearance of the window glass is enhanced, and a sufficient field of view of the window glass is obtained.

[0044] At least one of the supplying electrodes 32, 33, 35, and 39; and the grounding electrodes 37 and 39 may be formed by printing a material containing a conductive metal such as a silver paste on the plate surface 22 of the glass plate 20 and baking it, or may be formed with a metallic plate (metallic foil).

[0045] An area or region of the supplying electrode 33 or the supplying electrode 35 (hereinafter also referred to as an “area A F “) preferably falls within a range of 420 mm 2 up to 8000 mm 2 to increase the antenna gain for the VHF band. If the area A F less than 420 mm 2 the antenna gain is reduced to a value that is 6 dB lower than the maximum value. If the area A F 8000 mm 2exceeds, ie the size of the feeding electrode 33 (or the feeding electrode 35) increases, a part of the feeding electrode 33 (or a part of the feeding electrode 35) may enter or penetrate into the transmissive region 14 and the appearance may be deteriorated or the field of view may be reduced.

[0046] In order to increase the antenna gain for the VHF band, the area A F preferably 500 mm 2 or more and preferably 1000 mm 2 or more. In addition, to enhance or improve the appearance and increase the field of vision, the area A F preferably 2500 mm 2 or less and preferably 2000 mm 2 or less.

[0047] Fig. 2 is a plan view illustrating an example of a configuration of the window glass (device) for a vehicle according to the first embodiment. Fig. Figure 2 illustrates the window pane (device) for a vehicle installed in a vehicle, viewed from the vehicle interior. In the state where the window pane (device) for the vehicle is installed in Fig. 2 is installed in the vehicle, the Y axis is directed in the direction away from the ground surface. The supply electrode 33 includes a rectangular element 33a, a linear element 33b, and a curved element 33c. The supply electrode 33 extends in the Y-axis direction. The linear element 33b is an example of a first element, and the curved element 33c is an example of a second element.

[0048] The rectangular element 33a has an elongated shape and thus has a pair of long sides and a pair of short sides. The linear element 33b extends from a lower side of the rectangular element 33a. A width of the linear element 33b is narrower than the width of the lower side of the rectangular element 33a, which is one of the short sides of the rectangular element 33a. According to the length of the linear element 33b, the antenna gain of the VHF band (particularly the frequency band of Band III of DAB) is increased. The bent element 33c is conductively connected to the rectangular element 33a and has a width narrower than the width of the short side of the rectangular element 33a.The curved element 33c extends from a portion of the linear element 33b other than the ends, extending in a direction orthogonal to the direction in which the linear element 33b extends, then bends and extends downward. The curved element 33c has an open end. According to the length of the curved element 33c, the antenna gain of the UHF band, including terrestrial digital television broadcasting, the L band of DAB, and the like, is increased.

[0049] The curved element 33c may not be present in the feeding electrode 33. The linear element 33b and the curved element 33c may not be present in the feeding electrode 33.

[0050] The supply electrode 35 includes a rectangular element 35a, a linear element 35b, and a curved element 35c. The supply electrode 35 extends in the Y-axis direction. The linear element 35b is an example of the first element. The curved element 35c is an example of the second element. The supply electrode 35 has the same structure as the supply electrode 33, and explanation of the supply electrode 35 is omitted.

[0051] The supply electrode 33 and the grounding electrode 37 are arranged on the left side of the transmitting region 14, as viewed from the vehicle interior side of the window glass 101 installed in the vehicle. The supply electrode 35 and the grounding electrode 38 are arranged on the right side of the transmitting region 14, as viewed from the vehicle interior side of the window glass 101 installed in the vehicle. The above-described electrodes overlap with the light-shielding film 13 in the planar plan view, and the appearance is improved. The left side of the transmitting region 14, as viewed from the vehicle interior side of the window glass 101 installed in the vehicle, is an example of a first side. The right side of the transmitting region 14, as viewed from the vehicle interior side of the window glass 101 installed in the vehicle, is an example of a second side.

[0052] The supply electrode 32 is arranged above the upper side of the transmitting region 14, as viewed from the vehicle interior side, of the window glass 101 installed in the vehicle. The supply electrode 32 extends in the horizontal direction. In the embodiment, the supply electrode 32 is arranged from a left edge of the glass plate 20 to a right edge of the glass plate 20 along an upper edge of the glass plate 20. The supply electrode 32 extends in the X-axis direction. The supply electrode 32 "arranged along the upper edge of the glass plate 20" may contact the upper edge of the glass plate 20 or may be separated from the upper edge.

[0053] The supply electrode 39 includes a rectangular element 39a and a linear element 39b. The supply electrode 39 extends in the X-axis direction. The linear element 39b extends from the right side of the rectangular element 39a to the right in the X-axis direction and extends from the left side of the rectangular element 39a to the left in the X-axis direction. The linear element 39b may or may not be present.

[0054] An inner edge 13a of the light-shielding film 13 is disposed within an outer edge 50a of the planar conductor 50. The outer edge 50a overlaps with the light-shielding film 13 in a planar view. Thus, the outer edge 50a of the planar conductor 50 is shielded by the light-shielding film 13, and the appearance is improved.

[0055] A window glass device 1010 includes the window glass 101; a coil 81 on the positive electrode side, which is connected to the positive electrode 57; and a coil 83 on the negative electrode side, which is connected to the negative electrode 58. The coils 81 and 83 block at least signals of the VHF band. Thus, high-frequency components of the VHF band signal are prevented from entering the DC power source 80 and the ground level. The coils 81 and 83 preferably block at least signals of the frequency band of FM broadcast waves from signals of the VHF band, and more preferably block both signals of the frequency band of FM broadcast waves and signals of the frequency band of DAB Band III.

[0056] One end of the coil 81 on the positive electrode side opposite the positive electrode 57 may be connected to the ground level via a capacitor 82. One end of the coil 83 on the negative electrode side opposite the negative electrode 58 may be connected to the ground level via a capacitor 84. The impedance of the circuit is adjusted according to the capacitances of the capacitors 82 and 84.

[0057] The window glass device 1010 further includes a choke coil 86 connected to the positive electrode 57 and the negative electrode 58. The choke coil 86 blocks at least MF band signals. The choke coil 86 has a transformer structure including a primary coil and a secondary coil. The positive electrode 57 is connected to the positive electrode of the DC power source 80 via the primary coil, and the negative electrode 58 is connected to the negative electrode of the DC power source 80 via the secondary coil. According to the choke coil 86, MF band signals, such as AM transmission waves, received through the planar conductor 50 are prevented from entering the DC power source 80 and the ground level.

[0058] The windowpane device 1010 may be provided with a coil 85 connected to the supply electrode 32. The coil 85 is preferably an inductor having a configuration in which a coil 85a, which blocks at least the signals of the VHF band, and a coil 85b, which blocks at least the signals of the UHF band, are connected in series. [First modification of the first embodiment]

[0059] Fig. 2A is a plan view illustrating an example of a configuration of a window glass device for a vehicle according to a first modification or variation of the first embodiment. The window glass device for a vehicle 1010a shown in Fig.2A includes a notch portion 50b in which a conductive film is not present, for example, at an upper right corner portion of the conductive film 55. The window glass device for a vehicle 1010a further includes a feeding electrode 39 overlapping with at least a part of the notch portion 50b in the plan view. An outer edge 50a of the planar conductor 50, which is surrounded by four sides and has a quadrangular shape, is locally bent toward the interior of the planar conductor 50. The notch portion 50b is formed by the bent portion.

[0060] The notch part 50b, which is in Fig.2A, for example, includes a rectangular element 39a and a linear element 39b extending in the X-axis direction from the rectangular element 39a. The supply electrode 39, which is arranged in at least a part of the notch part 50b located in the upper right portion of the glass plate 20, weakens the capacitive coupling between the supply electrode 39 and the conductive film 55. Moreover, an amplifier 61 connected to the supply electrode 35 is arranged near an amplifier 62 connected to the supply electrode 39. Moreover, the amplifier 61 and the amplifier 62 are integrated into a case 63. Thus, the arrangement of a circuit is prevented from becoming complicated. The arrangement of the notch part 50b is not limited to the upper right portion of the conductive film 55.The notch part 50b may be the upper left portion of the conductive film 55 or may be arranged appropriately. [Second modification of the first embodiment]

[0061] Fig. 2B is a plan view illustrating an example of a configuration of a window glass device for a vehicle according to a second modification of the first embodiment. The window glass device for a vehicle 1011 shown in Fig. 2B includes a conductive film 55 interposed between a glass plate 10 disposed on the vehicle exterior and a glass plate 20 disposed on the vehicle interior; and parts thereof facing the metal body of the vehicle (flanges) on the right and left sides of the conductive film 55 in the plan view. Dashed lines in Fig.2B indicate boundaries (edge ​​portions) of the metallic body of the vehicle. The conductive film 55 has right and left regions facing the parts of the vehicle made of a metal, that is, a first side region 71 and a second side region 72. In the window glass device for the vehicle 1011, the first side region 71 or the second side region 72 may be omitted. The same applies to the following modifications. At least one or both of the first side region 71 and the second side region 72 will also be referred to simply as a "side region."

[0062] In the second modification of the first embodiment, in the plan view, the region of the metallic body which is in Fig.2B, which is directed to the first side region 71, the grounding electrode 37, and it corresponds to the region of the metallic body which is shown in Fig.2B, which faces the second side region 72, of the grounding electrode 38. Thus, in the window glass device 1011 according to the embodiment, the grounding electrodes may be the metallic body of the vehicle. Since the metallic body is separated from the first side region 71 and the second side region 72, the space between the metallic body and the first side region 71 or the second side region 72 may be air, or may be at least partially fixed via a material having a predetermined dielectric constant, such as a resin, for example, an adhesive such as urethane resin. Moreover, both a resin and air may be present between the first side region 71 or the second side region and the metallic body.The first side region 71 and the second side region 72 are connected to the ground level via a capacitive coupling.

[0063] When the metallic body is used for the grounding electrodes 37 and 38 as described in the second modification of the first embodiment, a coupling capacitance between the first side region 71 and the metallic body and a coupling capacitance between the second side region 72 and the metallic body are formed in the conductive film 55 (hereinafter referred to as a “coupling capacitance C B ”) preferably 3 pF or more. If the coupling capacitance C B 3 pF or more, the connection between the conductive film 55 and the metallic body corresponding to the ground level becomes stable for signals with a predetermined frequency. The coupling capacitance C Bis preferably 4 pF or more, and more preferably 5 pF or more. In addition, according to the upper limit of the area where the metallic bodies overlap with the side regions, the coupling capacitance C B preferably 130 pF or less.

[0064] In addition, each of the areas of the first side region 71 and the second side region 72 is preferably 700 mm 2 or more, and preferably 800 mm 2 or more, which is sufficient for the stable connection between the first side region 71 or the second side region 72 and the metallic body corresponding to the grounding level. Furthermore, each of the areas of the first side region 71 and the second side region 72 is preferably 20,000 mm 2 or less to ensure areas of the regions outside the boundaries of the metallic body. The grounding electrodes in the window glass device for the vehicle 1011, which are in Fig.2B are metallic bodies. The embodiment is not limited thereto, and the grounding electrodes 37 and 38 in the window glass device for the vehicle 1010 which are shown in Fig. 2 can be used in addition to the metallic bodies. [Third modification of the first embodiment]

[0065] Fig. 2C is an enlarged plan view illustrating an example of the configuration of the window glass device for a vehicle according to a third variation of the first embodiment. Fig.2C is an enlarged view of a part of the vehicle window device including the first side region 71. Explanations of the same configuration and effect as those in the second modification of the first embodiment will be omitted below. The vehicle window device 1012 shown in Fig.2C includes the conductive film 55 interposed between the glass panel 10 disposed on the vehicle exterior and the glass panel 20 disposed on the vehicle interior; and the first side region 71 facing the metallic body. In the window glass device for a vehicle 1012 according to the third modification of the first embodiment, the conductive film 55 has the first side region 71 arranged as an island connected via a first connecting part 73 crossing the boundary of the metallic body (dashed line 70) in the plan view. When the width of the first connecting part 73 crossing the boundary of the metallic body is smaller than the maximum value of the width of a metallic body side part of the first side region 71 in the plan view,The first side region 71 is defined to be arranged as an island. In the window glass device for a vehicle 1012 according to the third modification of the first embodiment, the first side region 71 is located between an edge 20a of the glass panel 20 and the dashed line 70 in the plan view. According to the third modification of the first embodiment, the area of ​​the first side region 71 functioning as a grounding electrode is controlled, and a stable connection with the metallic body is established according to the grounding level with the connection capacity C. B of 3 pF or more. Furthermore, installation of the window glass device for a vehicle according to the third modification of the first embodiment in a vehicle does not require wire connections, and installation processes are reduced.

[0066] The second side region 72 or region of the second side according to the third modification of the first embodiment, which is not shown in Fig. 2C has the same configuration as the configuration of the first side region 71. The conductive film 55 may have the second side region 72 (not shown) arranged as an island connected via a second connecting part (not shown) that intersects the boundary of the metallic body in the planar view. At least one or both of the first connecting part 73 and the second connecting part are also simply referred to as "connecting parts." [Fourth modification of the first embodiment]

[0067] Fig. 2D is an enlarged plan view showing an example of the configuration of the window glass device for a vehicle according to a fourth modification of the first embodiment. Fig.Fig. 2D is an enlarged view of a part of the window glass device for a vehicle, which includes the first side region 71. Explanations of the same configuration and effect as those in the second modification of the first embodiment will be omitted. The window glass device for a vehicle 1013 shown in Fig. 2D includes the conductive film 55 interposed between the glass plate 10 disposed on the vehicle exterior and the glass plate 20 disposed on the vehicle interior; and the first side region 71 facing the metallic body.

[0068] Fig.Fig. 2E is a cross-sectional view illustrating an example of a lamination structure of the window glass device for a vehicle according to the fourth modification of the first embodiment, which is obtained by cutting along a chain line A - A' in Fig. 2D. The vehicle window device 1013 includes an intervening film 40 and the conductive film 55 between the glass plate 10 and the glass plate 20. The present invention is not limited to the above-described configuration. For example, in the vehicle window device 1013, two intervening films may be interposed between the glass plate 10 and the glass plate 20, and the conductive film 55 may be disposed between the two intervening films.

[0069] In the window glass device for a vehicle 1013 according to the fourth modification of the first embodiment, the conductive film 55 has the first side region 71 arranged as an island, which is connected via a first connecting part 73 that intersects the boundary of the metallic body (dashed line 70) in the plan view of the conductive film 55. The first side region 71 is arranged on a main surface (plate surface 22) of the glass plate 20 facing a metallic body. The first connecting part 73 extends to a side surface of the glass plate 20 (edge ​​surface 20a) and further extends along the side surface 20a to the main surface of the glass plate 20 (plate surface 22) facing the metallic body. The first connecting part 73 may be a first inversion part.Turning part 73a which turns along the main surface (plate surface 22) of the glass plate 20 which is directed towards the metallic body.

[0070] The conductive film 55 according to the fourth modification of the first embodiment may be formed with a metallic film deposited on a resin film including the first connecting part 73 and the first side region 71. However, the present invention is not limited to the above-described manner if the conductive film 55 has a predetermined conductivity. For example, the first side region 71 may be made of a conductive material different from that of other parts of the conductive film 55. Furthermore, the first connecting part 73 and the first side region 71 may be made of a conductive material different from that of other parts of the conductive film 55.As a material between the first side region 71 and the metallic body, the material described in the second modification of the first embodiment (including air) can be used. This material is connected to the ground level via capacitive coupling. According to the above-described configuration, the area of ​​the first side region 71, which functions as a grounding electrode, can be changed, and a stable connection with the metallic body corresponding to the ground level is obtained, so that the coupling capacitance C. B 3 pF or more.

[0071] The second side region 72 according to the fourth modification of the first embodiment may have the same configuration as the first side region 71 (not shown in Fig. 2D and Fig.2E). The conductive film 55 according to the fourth modification of the first embodiment may include the second side region 72 arranged as an island located on the main surface of the glass plate 20 facing the metallic body, and connected to the conductive film 55 via a second connecting part. The second connecting part crosses the boundary of the metallic body in the plan view and has a second turning part (not shown). At least one or both of the first turning part 73a and the second turning part are also simply referred to as "turning parts." [Fifth modification of the first embodiment]

[0072] Fig. 2F is an enlarged plan view showing an example of the configuration of the window glass device for a vehicle according to a fifth modification of the first embodiment. Fig.Fig. 2F is an enlarged view of a part of the window glass device for a vehicle, including the first side region 71. Explanations of the same configuration and effect as those in the second modification of the first embodiment will be omitted below. The window glass device for a vehicle 1014 shown in Fig. 2F includes the conductive film 55 interposed between the glass plate 10 disposed on the vehicle exterior and the glass plate 20 disposed on the vehicle interior; and the first side region 71 facing the metallic body.

[0073] The first side region 71 is conductively connected to a first capacitive coupling part 75 via a first connecting part 77. The first side region 71, the first connecting part 77, and the first capacitive coupling part 75 are arranged on the vehicle inner surface of the glass panel 20, which is arranged on the vehicle interior side of the window glass device for the vehicle. In the window glass device for a vehicle according to the fifth modification of the first embodiment, an edge of the light-shielding film 13 (inner periphery 13a) is arranged within the first capacitive coupling part 75. Then, the light-shielding film 13 overlaps with the first capacitive coupling part 75, and at least a part of the first connection part 77 overlaps with the light-shielding film 13. Thus, the first capacitive coupling part 75 and the first connection part 77 are not seen.

[0074] Fig. Fig. 2G is a cross-sectional view illustrating an example of a lamination structure of the window glass device for a vehicle according to the fifth modification of the first embodiment, which is obtained by cutting along a chain line B - B' in Fig. 2F. The vehicle window device 1014 includes an interlayer film 40 and the conductive film 55 between the glass plate 10 and the glass plate 20. The present invention is not limited to the above-described configuration. For example, in the vehicle window device 1014, two interlayer films may be interposed between the glass plate 10 and the glass plate 20, and the conductive film 55 may be disposed between the two interlayer films.

[0075] In the window glass device for a vehicle 1014 according to the fifth modification of the first embodiment, the conductive film 55 is provided with the first side region 71 arranged as an island, which is connected to the conductive film 55 via a first connecting part 77. In the window glass device for a vehicle 1014 according to the fifth modification of the first embodiment, the first capacitive coupling part 75 overlaps with the conductive film 55 in the plan view, and thereby the first capacitive coupling part 75 is electrically connected to the conductive film 55 for signals having a predetermined frequency. The conductive film 55 is conductively connected to the metallic body with a coupling capacitance C1. The coupling capacitance C2 is a combined capacitance of a coupling capacitance C1 between the conductive film 55 and the first capacitive coupling part 75; and the coupling capacitance CB between the first side region 71 and the metallic body, ie C2 = C1 · C B / (C1+C B ). The coupling capacitance C2 is preferably 3 pF or more.

[0076] In the fifth modification of the first embodiment, an area in which the conductive film 55 overlaps with the first capacitive coupling part 75 and an area in which the first side region 71 overlaps with the metallic body are preferably determined so that the combined capacitance C2 is 3 pF or more. When the combined capacitance C2 is 3 pF or more, a stable connection between the conductive film 55 and the metallic body corresponding to the ground level is obtained. The combined coupling capacitance C2 is preferably 4 pF or more, and more preferably 5 pF or more. Although not particularly limited, the combined coupling capacitance C2 is preferably 130 pF or less from the relationship of upper limits of the area in which the conductive film 55 overlaps with the first capacitive coupling part 75 and the area in which the first side region 71 overlaps with the metallic body.

[0077] The second side region 72 according to the fifth modification of the first embodiment may have the same configuration as the first side region 71 (not shown in Fig. 2F and Fig. 2G). The second side region 72, the second connecting part (not shown), and the second capacitive coupling part (not shown) are arranged on the vehicle's inner surface of the glass panel 20. At least one or both of the first connecting part 77 and the second connecting part are also simply referred to as "connecting parts." At least one or both of the first capacitive coupling part 75 and the second capacitive coupling part are also simply referred to as "capacitive coupling parts." [Sixth modification of the first embodiment]

[0078] Fig.2H is an enlarged plan view showing an example of the configuration of the window glass device for a vehicle according to a sixth modification of the first embodiment. Fig. Fig. 2H is an enlarged view of a part of the window glass device for a vehicle, including a first linear conductor 87. Explanations of the same configuration and effect as those in the second modification of the first embodiment will be omitted below. The window glass device for a vehicle 1015 shown in Fig. 2H includes the conductive film 55 interposed between the glass panel 10 disposed on the vehicle exterior and the glass panel 20 disposed on the vehicle interior; and the first linear conductor 87 conductively connected to the conductive film 55 via a first connecting part 89 included in the conductive film 55.

[0079] The first linear conductor 87, which is in Fig.2H does not overlap with the metallic body in the planar view. The first linear conductor 87 is arranged along the metallic body, for example, along an edge surface (dashed line 70) of the metallic body, separated from the edge surface by a predetermined distance. A length, a width, and an arrangement position of the first linear conductor 87 are determined such that the metallic body and the first linear conductor 87 are capacitively coupled to each other in an inclined direction in the planar view. Specifically, the length, the width, and the arrangement position are determined such that the coupling capacitance C3 between the first linear conductor 87 and the metallic body is 3 pF or more. The closest or shortest distance between the first linear conductor 87 and the metallic body must be 5 mm or less.The maximum distance between the first linear conductor 87 and the maximum body is preferably 5 mm or less. The first linear conductor 87 may be made of the same material as the conductive film 55. The material of the first linear conductor 87 may include silver, copper, aluminum, or the like. The coupling capacitance C3 is preferably 4 pF or more, and more preferably 5 pF or more. The coupling capacitance C3 is preferably 130 pF or less, so that the first linear conductor 87 is not unnecessarily long.

[0080] In the sixth modification of the first embodiment, a second linear conductor (not shown) arranged in a right part of the window glass may have the same configuration as the first linear conductor 87. The conductive film 55 according to the sixth modification of the first embodiment may have a second connecting part (not shown), and the second linear conductor may be conductively connected to the conductive film 55 via the second connecting part. At least one or both of the first connecting part 89 and the second connecting part are also simply referred to as "connecting parts." At least one or both of the first linear conductor 87 and the second linear conductor are also simply referred to as "linear conductors." [Second embodiment]

[0081] Fig.3 is an exploded perspective view showing an example of a configuration of a window glass for a vehicle according to a second embodiment. Fig. 4 is a plan view illustrating an example of a configuration of the window glass for a vehicle according to the second embodiment. Explanations of the same configuration and effect as those in the first embodiment will be omitted.

[0082] The window pane 102 includes a glass plate 10 disposed on the vehicle exterior, a glass plate 20 disposed on the vehicle interior, and a planar conductor 50 disposed inside a laminated glass.

[0083] The planar conductor 50 according to the second embodiment shown in Fig. 3 and Fig.4 is divided into two parts by a dividing line 59 extending in the horizontal direction. In a state where they are installed in a vehicle, the two parts are referred to as an upper conductor region 156 above the dividing line 59 and a lower conductor region 155 below the dividing line 59. The upper conductor region 156 is an example of a first conductor region, and the lower conductor region 155 is an example of a second conductor region. For example, the upper conductor region 156 is provided with a conductive film 56, and the lower conductor region 155 is provided with a conductive film 55 and a pair of bus bars 51 and 52 connected to the conductive film 55.

[0084] A positive electrode 57 and a negative electrode 58 are not connected to the upper conductive region 156, but are connected to the lower conductive region 155. A DC voltage is not applied to the upper conductive region 156, and the conductive film 56 does not generate heat. A DC voltage is applied to the lower conductive region 155, and the conductive film 55 functions as a heater.

[0085] The feeding electrode 33 and the grounding electrode 37 are directed toward the planar conductor 50 via the glass plate 20, so that the planar conductor 50 receives at least VHF band electromagnetic waves. The feeding electrode 33 is directed only toward the upper conductor region 156 via the glass plate 20, or is directed toward the upper conductor region 156 and the lower conductor region 155 via the glass plate 20. The grounding electrode 37 is not directed toward the upper conductor region 156 via the glass plate 20, but rather toward the lower conductor region 155 via the glass plate 20. The feeding electrode 33 and the grounding electrode 37, which are directed toward the planar conductor 50 via the glass plate 20, form an inverted-F antenna to which current is supplied via capacitive coupling.The supply electrode 33 and the grounding electrode 37 are directed toward the planar conductor 50 via the glass plate 20 to form the inverted-F antenna, which receives at least electromagnetic waves of the VHF band. Thus, the window pane 102 has an antenna gain for the VHF band. The supply electrode 33 can be configured to receive at least electromagnetic waves of the UHF band.

[0086] The window pane 102 may further be provided with a supply electrode 35 and a grounding electrode 38 disposed on the interior surface of the laminated glass. Since the supply electrode 35 and the grounding electrode 38 were explained above, the supply electrode 35 and the grounding electrode 38 will not be described in detail below.

[0087] The window pane 102 may further be provided with a supply electrode 32 disposed on the interior surface of the laminated glass. The supply electrode 32 is directed toward the upper conductor region 156 via the glass plate 20 such that the upper conductor region 156 receives at least MF band electromagnetic waves. That is, the supply electrode 32 is directed toward the upper conductor region 156 via the glass plate 20 such that at least a portion of the upper conductor region 156 functions as a radiation conductor that receives MF band electromagnetic waves. Since the supply electrode 32 was explained above, the supply electrode 32 will not be explained in detail below.

[0088] Fig.4 is a plan view illustrating an example of the configuration of the window glass for a vehicle according to the second embodiment. A vertical size of the upper conductor region 156 is L1, and a vertical size of the lower conductor region 155 is L2. A ratio L1 / L2 preferably falls within a range of 1 / 15 to 1 / 3. When the ratio L1 / L2 falls within the range of 1 / 15 to 1 / 3, the window glass at least has an antenna gain for the VHF band, a good appearance of the window glass, a sufficient field of view of the window glass, and an anti-fogging effect. When the ratio L1 / L2 is less than 1 / 15, the area of ​​the upper conductor region 156 decreases, and the antenna gain for the MF band becomes small. When the ratio L1 / L2 exceeds 1 / 3, the area of ​​the lower conductor region 155 decreases and a region exhibiting the anti-fogging effect becomes small.

[0089] An inner edge 13a of the light-shielding film 13 is disposed within an outer edge 56a of the upper conductor region 156 and an outer edge 55a of the lower conductor region 155, except for portions of the outer edges 56a and 55a along the dividing line 59. Thus, the outer edge 56a and the outer edge 55a, except for the portions along the dividing line 59, overlap with the light-shielding film 13 in the planar view, and an outer edge of the planar conductor 50 is not seen according to the light-shielding film 13, and the appearance of the windowpane is enhanced.

[0090] The choke coil 86, which is in Fig. 2 may be omitted in the window pane device 1020 according to the second embodiment (see Fig.4). The upper conductor region 156, which receives electromagnetic waves of the MF band, is separated from the lower conductor region 155, to which a DC electric voltage is applied from the DC voltage source 80, and a path through which signals obtained by receiving electromagnetic waves of the MF band, such as AM broadcast waves, leak to the ground level is blocked.

[0091] The window pane device 1020 may be provided with a coil 85 connected to the supply electrode 32. The coil 85 is preferably an inductor coil that blocks at least signals received from receiving electromagnetic waves of the VHF band. [Modification of the second embodiment]

[0092] Fig.4A is a diagram illustrating an example of a configuration of a window glass device for a vehicle according to a modification of the second embodiment. The window glass device for a vehicle 1021 according to the modification of the second embodiment shown in Fig. 4A, comprises a conductive film 55 disposed between a glass plate 10 disposed on the vehicle exterior and a glass plate 20 disposed on the vehicle interior; and parts facing the metal body of the vehicle (flanges) on the right and left sides of the conductive film 55 in the plan view. Dashed lines in Fig.4A indicate boundaries (edge ​​portions) of the metallic body of the vehicle. The conductive film 55 has right and left regions facing the parts of the vehicle made of metal, that is, a first side region 71 and a second side region 72. In the window glass device for a vehicle 1021, the first side region 71 or the second side region 72 may be absent.

[0093] The region of the metallic body which is in Fig.4A, which faces the first side region 71 in the plan view, corresponds to the grounding electrode 37, and the region of the metallic body facing the second side region 72 corresponds to the grounding electrode 38. Thus, in the window glass device 1021 according to the embodiment, the grounding electrode may be the metallic body of the vehicle. As a material between the first side region 71 and the metallic body and a material between the second side region 72 and the metallic body, the material described in the second modification of the first embodiment (including air) may be used. The material is connected to the ground level via capacitive coupling.

[0094] The first modification of the first embodiment described above can be applied to the window glass device for a vehicle according to the second embodiment. Furthermore, the window glass device for a vehicle according to the second embodiment can be provided with the first side region 71 and the second side region 72 according to any of the second to fifth modifications of the first embodiment. Furthermore, the window glass device for a vehicle according to the second embodiment can be provided with the first linear conductor 87 and the second linear conductor (not illustrated) according to the sixth modification of the first embodiment.In each of the window glass devices for a vehicle to which the first to sixth modifications of the first embodiment are applied, a metallic body is required to be used for the grounding electrode, and a part conductively connected to the conductive film 55 and the metallic body are required to be capacitively coupled to each other with a coupling capacitance or a combined coupling capacitance of 3 pF or more for signals having a predetermined frequency.

[0095] Areas of the first side region 71 and the second side region 72 are determined to obtain a stable connection with the metallic body (ground level) and preferably fall within the range described in the modifications of the first embodiment. Furthermore, in the window glass device for a vehicle 1021 shown in Fig. 4A, the metallic body is used for the grounding electrode. The present invention is not limited thereto, and the grounding electrodes 37 and 38 in the window glass device for a vehicle 1020 shown in Fig. 4 can be used in addition to the metallic body.

[0096] Fig. Fig. 5 is a diagram illustrating another example of the configuration of the supply electrode 35 according to the embodiment. The supply electrode 35 includes a rectangular element 35a, a linear element 35b, and a linear element 35d.

[0097] The supply electrode 35 is configured to extend in the Y-axis direction. The linear element 35b is an example of the first element. The linear element 35d is an example of the second element.

[0098] The linear element 35d extends from a lower side of the rectangular element 35a, with the linear element 35b connected to the lower side. The linear element 35d includes a portion extending in a direction parallel to a right side of the rectangular element 35a. The linear element 35d is shorter than the linear element 35b. Antenna gains of terrestrial digital television broadcast waves or the UHF band, such as the L band of DAB, are adjusted by changing the length of the linear element 35d.

[0099] In the supply electrode 35, the linear element 35d may not be present, and the linear elements 35b and 35d may not be present. The supply electrode 33 has the same configuration as the supply electrode 35, and an explanation of the supply electrode 33 is omitted.

[0100] Fig.6 to 11 are diagrams showing examples of lamination structures of window panes for a vehicle according to modifications of the embodiment. Although in each of the Fig. 6 to 11, the supplying electrode 32 arranged on the plate surface 22 is shown, other supplying electrodes and the grounding electrode may be arranged in the same manner as the supplying electrode 32.

[0101] In each of the lamination structures, which are Fig. 6 to 8, the planar conductor 50 is disposed between the glass plate 10 and the glass plate 20. The planar conductor 50 and the feeding electrode 32 are arranged to overlap each other across the glass plate 20 in a thickness direction of the glass plate 20 (Z-axis direction) in the planar view. The planar conductor 50 contacts the intermediate film 40 disposed between the glass plate 10 and the glass plate 20.

[0102] Fig. 6 shows the planar conductor 50 formed on the plate surface 21 of the glass plate 20. For example, the planar conductor 50 is formed on a conductive film deposited on the plate surface 21 of the glass plate 20.

[0103] Fig. Fig. 7 shows the planar conductor 50 formed on the plate surface 11 of the glass plate 10. For example, the planar conductor 50 is formed on a conductive film deposited on the plate surface 11 of the glass plate 10. The intermediate film 40 may be present in addition to the glass plate 20 between the planar conductor 50 and the supply electrode 32, as shown in Fig. 7 is illustrated.

[0104] Fig.8 shows the planar conductor 50 disposed between the intermediate film 41 and the intermediate film 42. The intermediate film 41 is an example of a first layer contained in the intermediate film 40, and the intermediate film 42 is an example of a second layer contained in the intermediate film 40. For example, the planar conductor 50 is interposed between the intermediate film 41, which contacts the plate surface 11 of the glass plate 10, and the intermediate film 42, which contacts the plate surface 21 of the glass plate 20. In addition to the glass plate 20, the intermediate film 42 may be present between the planar conductor 50 and the supply electrode 32, as shown in Fig. 8 is illustrated.

[0105] As this is Fig.As shown in FIGS. 9 to 11, the window glass for a vehicle according to the present disclosure is not limited to laminated glass. A size of a dielectric disposed between the planar conductor 50 and the supply electrode 32 may be different from the size of the glass plate 10. The dielectric may be a dielectric substrate or a dielectric film having a size sufficient to form the supply electrode 32.

[0106] The flat conductor 50, which in each of the Fig.9 to 11 is arranged between the glass plate 10 and the dielectric substrate 23. The planar conductor 50 and the feeding electrode 32 are arranged to overlap each other across the dielectric substrate 23 in the plan view in the thickness direction of the dielectric substrate 23 (Z-axis direction). The dielectric substrate 23 is, for example, a circuit board made of a resin (e.g., a glass epoxy substrate in which a copper foil is attached to FR4 (flame retardant type 4)), or may be replaced by a dielectric film.

[0107] Fig.9 shows the planar conductor 50 formed on the plate surface 11 of the glass plate 10. For example, the planar conductor 50 is formed on a conductive film deposited on the plate surface 11 of the glass plate 10. The supply electrode 32 is disposed on the plate surface 22 of the dielectric substrate 23. The dielectric substrate 23 is bonded to the planar conductor 50 via an adhesive layer 43 so that the supply electrode 32 faces the planar conductor 50.

[0108] Fig.10 shows the planar conductor 50 formed across the plate surface 11 of the glass plate 10. For example, the planar conductor 50 is bonded to the plate surface 11 via an adhesive layer 43a. The supply electrode 32 is disposed on the plate surface 22 of the dielectric substrate 23. The dielectric substrate 23 is bonded to the planar conductor 50 via an adhesive layer 43b, so that the supply electrode 32 faces the planar conductor 50.

[0109] Fig.11 shows the dielectric substrate 23 bonded to the plate surface 11 of the glass plate 10 via the adhesive layer 43. For example, the dielectric substrate 23 includes the plate surface 21 on which the planar conductor 50 is formed; and the plate surface 22 on which the supply electrode 32 is formed, such that at least a portion of a dielectric of the dielectric substrate 23 is interposed between the planar conductor 50 and the supply electrode 32. The planar conductor 50 may be embedded in the dielectric substrate 23.

[0110] In the window glass for a vehicle according to the embodiment, at least a part of the planar conductor 50 is directed to the supplying electrode 32 via a dielectric (a glass plate, a dielectric substrate, or the like). Thus, signals received at the planar conductor 50 are extracted from the supplying electrode 32 via a capacitive coupling between the planar conductor 50 and the supplying electrode 32. Signals extracted from the supplying electrode 32 are input to the input unit of the amplifier 60 (see Fig. 1 and the like) via a supply line (conductive member) that is conductively connected to the supply electrode 32. The conductive member specifically includes an AV line, a coaxial cable, and the like.

[0111] When a coaxial cable is used for the supply line, a core wire (inner conductor) is connected to the supply electrode 32, and an outer conductor of the coaxial cable is connected to the ground level, such as a vehicle body. Furthermore, a connector for connecting the amplifier 60 to the supply electrode 32 may be used. The supply electrode 32 is provided with the connector, for example. Alternatively, the connector may be provided with the amplifier 60. A coaxial cable may be applied to the supply electrode 33, 35, or 39. The connector may similarly be provided with the amplifier 61 or the amplifier 62.

[0112] Signals received by the planar conductor 50 are extracted by the supplying electrode 32 via the capacitive coupling between the planar conductor 50 and the supplying electrode 32. The input unit of the amplifier 60 is directly or indirectly connected to the supplying electrode 32. The amplifier 60 amplifies the signals extracted by the supplying electrode 32 and outputs the amplified signals to the signal processing circuit (not shown) installed in the vehicle.

[0113] An equivalent circuit for the process from the plane conductor 50 to the amplifier 60 of the MF band is expressed by a circuit which in Fig. 12 is shown.

[0114] For the first embodiment, which is shown in Fig. 1 and Fig. 2 is illustrated, C c in Fig.12 is the coupling capacitance between the flat conductor 50 and the supply electrode 32, C a an antenna capacitance of the planar conductor 50 and is C i an input capacitance of the amplifier 60, which is connected to the supply electrode 32. In addition, v xdB a voltage value which is x decibels lower than a voltage value V output by the supplying electrode 32 when the coupling capacitance C c is infinite, and is v a a receiving voltage value of the plane conductor 50. If the coupling capacitance C c If the following equation or relationship (1) is satisfied, a coupling loss in the capacitive coupling between the planar conductor 50 and the supply electrode is 32 x decibels or less. The value of x is 3.0 or less. Furthermore, the value of x is preferably 2.0 or less, more preferably 1.0 or less, and even more preferably 0.5 or less. [Math 1] Cc≥Ci×Ca×vxdBvaCa−(Ca+Ci)×vxdBva

[0115] For the first embodiment, which is shown in Fig. 1 and Fig. 2 is illustrated, C a a capacitance between the flat conductor 50 and the ground level of the vehicle body or the like. It is C i an input capacitance between the input unit of the amplifier 60 and the ground level of the vehicle body or the like. “If the coupling capacitance C c "Infinite" means that the planar conductor 50 and the supply electrode 32 are directly connected to each other via a conductor without capacitive coupling. That is, this represents a state where the coupling loss in the coupling capacitance between the planar conductor 50 and the supply electrode 32 is zero.

[0116] For the second embodiment, which is shown in Fig. 3 and Fig. 4 is illustrated, C c in Fig.12 is a coupling capacitance between the upper conductor region 156 and the supply electrode 32, C a an antenna capacitance of the upper conductor region 156 and is C i an input capacitance of the amplifier 60, which is connected to the supply electrode 32. In addition, v xdB a voltage value which is x decibels lower than a voltage value V output by the supplying electrode 32 when the coupling capacitance C c is infinite, and is v a a receiving voltage value of the upper conductor region 156. If the coupling capacitance C c satisfying the following equation or relationship (1), a coupling loss in the capacitive coupling between the upper conductor region 156 and the supply electrode is 32 x decibels or less.

[0117] For the second embodiment, which is shown in Fig. 3 and Fig. 4 is illustrated, C aa capacitance between the upper conductor region 156 and the ground level of the vehicle body or the like. It is C i an input capacitance between the input unit of the amplifier 60 and the ground level of the vehicle body or the like. “If the coupling capacitance C c "Infinite" means that the upper conductor region 156 and the supply electrode 32 are directly connected to each other via a conductor without capacitive coupling. That is, this represents a state where the coupling loss in the coupling capacitance between the upper conductor region 156 and the supply electrode 32 is zero.

[0118] In each embodiment, the state where the coupling capacitance C c is infinite, an ideal state in which there is no coupling loss in the capacitive coupling. Since the coupling loss in the coupling capacitance is smaller in accordance with the coupling capacitance Cc which is larger, it can be prevented that a divided voltage which is applied to the input capacitance C i (voltage input to the amplifier 60) is applied, decreases due to the coupling loss. Thus, if the coupling capacitance C c is set to satisfy equation (1), a voltage input to the amplifier 60 can be prevented from decreasing due to the coupling loss. Thus, in the case of extracting, via capacitive coupling, signals obtained by receiving electromagnetic waves in the frequency band of AM transmission, an electric voltage input to the amplifier 60 is ensured, and sufficient reception sensitivity is maintained in the amplifier 60.

[0119] Fig.13 is a diagram showing an example of a result of a simulation showing a relationship between an input capacitance C i of the amplifier 60 and the coupling capacitance C c where the coupling loss is 1.0 dB. Fig. 14 is a diagram showing an example of a result of a simulation showing a relationship between an input capacitance C i of the amplifier 60 and the coupling capacitance C c where the coupling loss is 0.5 dB. Curves which are Fig. 13 and Fig. 14 are expressed by the following relationship (2). The value of x is 3.0 or less. The value of x is preferably 2.0 or less, more preferably 1.0 or less, and further preferably 0.5 or less. [Maths 2] Cc=Ci×Ca×vxdBvaCa−(Ca+Ci)×vxdBva

[0120] A curve which in Fig. 13 shows the case where x 1.0 for vxdB in the relationship or equation (2) described above, and a curve which is in Fig. 14 shows the case where x 0.5 for v xdB Since typically an antenna capacitance of an antenna element for receiving AM transmission waves falls within a range of 20 pF to 80 pF, the antenna capacitance C a in Fig. 13 and Fig. 14 is set to the minimum value of the range (i.e., 20 pF). Furthermore, an amplifier's input capacitance typically falls within a range of 10 pF to 80 pF.

[0121] In this way, as in Fig. 13, for example in the case of using an amplifier 60 with an input capacitance C i of 10 pF by constructing or developing the antenna in such a way that the coupling capacitance C c54.6 pF or more, the coupling loss can be made 1.0 dB or less, and the receiving sensitivity of the amplifier 60 can be increased. In addition, as shown in Fig. 14, for example in the case of using an amplifier 60 with an input capacitance C i of 10 pF by developing the antenna in such a way that the coupling capacitance C c 112.5 pF or more, the coupling loss can be made 0.5 dB or less, and the receiving sensitivity of the amplifier 60 can be increased.

[0122] In a plan view in the thickness direction of the dielectric, the coupling capacitance C clarger in accordance with the fact that an area where the planar conductor 50 and the supply electrode 32 overlap each other (hereinafter also referred to as an "overlapping area A") is larger. Thus, the overlapping area A is preferably larger in reducing the coupling loss. However, when an upper limit of the overlapping area A is calculated by taking into account an upper limit of an area of ​​the glass plate or the dielectric substrate, an upper limit of the coupling capacitance C c about 3500 pF.

[0123] Fig. 15 is a diagram showing an example of a relationship between the area A F and the antenna gain of the feeding electrode 33 or the feeding electrode 35. If the area A Fvaries, the antenna gain of the frequency band of FM transmission waves changes more significantly than the antenna gain of the frequency band of Band III of DAB. Thus, the area A F preferably 420 mm 2 or more when increasing the antenna gain of the frequency band of FM transmission waves, as in Fig. 15. If the area A F less than 420 mm 2 the antenna gain is about 6 dB (decibels) lower than the maximum value of the antenna gain.

[0124] TABLE 1 shows an example of a test result for the antenna gain of the window glass for a vehicle according to the second embodiment shown in Fig. 3 and Fig.4 (ie, the window pane 102 with divided coatings (conductive films)). TABLE 2 shows an example of a test result for the antenna gain of the window pane for a vehicle according to the first embodiment shown in Fig. 1 and Fig. 2 (ie, the window pane 101 with non-divided coating (conductive film)).

[0125] In the vehicle window glass antenna gain test, the supply electrode 33 (35) includes a rectangular element 33a (35a) measuring 10 mm x 110 mm, which has a long side in the Y-axis direction. The supply electrode 33 (35) includes a linear element 33b (35b) with a width of 0.8 mm, which extends 110 mm in the Y-axis direction from a lower side of the rectangular element 33a (35a). The supply electrode 33 (35) further includes an L-shaped curved element 33c (35c) with a width of 0.8 mm, which extends 10 mm from a branching point on the linear element 33b (35b) separated from the bottom side of the rectangular element 33a (35a). The curved element 33c (35c) extends 10 mm in the X-axis direction from the branching point and then extends 50 mm in the Y-axis direction.Furthermore, the supply electrode 39 includes a rectangular element 39a measuring 20 mm x 10 mm and linear elements extending 40 mm in the positive X-axis direction and the negative X-axis direction. The supply electrode 32 includes a rectangular element measuring 10 mm x 1020 mm in the upper edge portion of the vehicle window.

[0126] The planar conductor 50 of the vehicle window glass according to the second embodiment is divided into two parts by the dividing line 59 extending in the horizontal direction in the state where the vehicle window glass is installed in the vehicle. The vertical size L1 of the upper conductor region 156 is approximately 130 mm, and the vertical size L2 of the lower conductor region 155 is approximately 520 mm. A ratio of the sizes L1 / L2 is 0.25. [TABLE 1] Split coatings ECE FM / DAB / DTV Profit Horizontal polarization Vertical polarization FM1 -6,4 -2,5 FM2 -7,4 -3,8 DAB1 -4,3 -1,8 DAB2 -3,8 -1,5 DTV1 (Volume 4&5) -7,0 -4,2 DTV2 (Volume 4&5) -6,8 -3,9 DTV3 (Volume 4&5) -5,8 -3,3 Unit: dB JPN FM Win Horizontal polarization Vertical polarization FM1 -7,3 -3,3 FM2 -8,6 -4,8 Unit: dB [TABLE 2] Undivided coating ECE FM / DAB / DTV Profit Horizontal polarization Vertical polarization FM1 -7,7 -4,0 FM2 -6,8 -2,4 DAB1 -4,7 -1,8 DAB2 -3,6 -0,6 DTV1 (Volume 4&5) -6,5 -4,2 DTV2 (Volume 4&5) -6,9 -4,9 DTV3 (Volume 4&5) -6,6 -4,2 Unit: dB JPN FM Win Horizontal polarization Vertical polarization FM1 -6,8 -3,5 FM2 -6,7 -3,5 Unit: dB

[0127] TABLES 1 and 2 show measured antenna gains (average values) for the frequency bands used in Europe (ECE) and Japan (JPN). The frequency bands used in ECE include FM (87 to 108 MHz), DAB (170 to 240 MHz), and DTV Band 4 & 5 (470 to 790 MHz). The frequency bands used in Japan include FM (76 to 108 MHz). FM1 denotes signals output from the feeding electrode 33, which receives FM broadcast waves of the FM band, and FM2 denotes signals output from the feeding electrode 35, which receives FM broadcast waves of the FM band. DAB1 denotes signals output from the feeding electrode 33 which receives electromagnetic waves of the DAB band, and DAB2 denotes signals output from the feeding electrode 35 which receives electromagnetic waves of the DAB band.DTV1 denotes signals output from the feeding electrode 33 that receives electromagnetic waves of the DTV band, DTV2 denotes signals output from the feeding electrode 35 that receives electromagnetic waves of the DTV band, and DTV3 denotes signals output from the feeding electrode 39 that receives electromagnetic waves of the DTV band. The antenna gain values ​​shown in TABLES 1 and 2 satisfy the requirements for the reception sensitivities of the frequency bands.

[0128] TABLE 3 shows an example of a test result for the antenna gain of the window glass for a vehicle according to the first and second embodiments. [TABLE 3] Split coatings Undivided coating AM 19,4 22,9 Unit: dBµV

[0129] TABLE 3 shows antenna gains obtained by measuring signals output from the feeding electrode 32, averaging values ​​at a plurality of frequencies (594 kHz, 693 kHz, 810 kHz, 954 kHz, 1134 kHz, 1242 kHz, and 1422 kHz) included in the frequency band used for AM transmission waves (531 to 1720 kHz). The antenna gain values ​​shown in Table 3 satisfy the reception sensitivity requirement of the AM frequency band.

[0130] As described above, the preferred embodiments and the like of the window glass for a vehicle have been described. However, the present invention is not limited to the specific embodiments described above. Various modifications and variations, such as combinations with a part or all of the other embodiments, or replacements, can be made within the scope of the present invention. LIST OF REFERENCE SYMBOLS 10 Glass plate (example of a first glass plate) 13 light-shielding film 14 permeable region 20 Glass plate (example of a second glass plate or dielectric) 21 Plate surface (example of a first plate surface) 22 Plate surface (example of a second plate surface) 23 dielectric substrate (example of a dielectric) 32 supply electrode (example of a second supply electrode) 33, 35 supplying electrode 37, 38 earthing electrode 39 supplying electrode (example of a conductive or conductive pattern) 40 intermediate film 41 first layer or layer 42 second layer or layer 43 Adhesive layer 50 flat or planar conductors 50b notch part 51, 52 busbar 55, 56 conductive film 57 positive electrode 58 negative electrode 59 dividing or separating line 60, 61, 62 amplifiers 63 Sheath or housing 70 dashed line (boundary (edge ​​or edge section) of a metallic body) 71 first page region or region of the first page 72 second page region or region of the second page 73, 77, 89 first connecting part 75 first capacitive coupling part 86 choke coil 87 first linear conductor 101, 102 window pane 155 lower conductor region or region of a lower conductor (example of a second conductor region) 156 upper conductor region or region of an upper conductor (example of a first conductor region) 1010, 1010a, 1011, 1012, 1013, 1014, 1015, 1020, 1021 Window pane device (example of a window pane device for a vehicle)

Claims

[1] Window pane (101, 102) for a vehicle, comprising: a glass plate (10) having a transmissive region (14) which transmits visible light and a light-shielding film (13) which shields visible light and which is arranged around the transmissive region (14); a dielectric (20) having a first surface (21) facing the glass plate (10) and a second surface (22) opposite the first surface; a planar conductor (50) disposed between the glass plate (10) and the first surface of the dielectric (20); a positive electrode (57) connected to the planar conductor (50); a negative electrode (58) connected to the planar conductor (50); one or more supplying electrodes (32, 33, 35, 39) arranged on the second surface (22) of the dielectric (20); and one or more grounding electrodes (37, 38) arranged on the second surface (22) of the dielectric (20), wherein the planar conductor (50) generates heat by an electrical voltage applied between the positive electrode (57) and the negative electrode (58), wherein the supplying electrodes (32, 33, 35, 39) and the grounding electrodes (37, 38) are arranged to be directed towards the planar conductor (50) via the dielectric (20) to form an inverted F antenna, so that the planar conductor (50) receives at least electromagnetic waves of a VHF band, and wherein the positive electrode (57), the negative electrode (58), the supplying electrodes (32, 33, 35, 39) and the grounding electrodes (37, 38) are arranged to overlap with the light-shielding film (13) in a planar view. [2] A window pane for a vehicle according to claim 1, wherein an area of a supplying electrode of the one or more supplying electrodes (32, 33, 35, 39) is 420 mm 2 or more and 8000 mm 2 or less. [3] A window glass for a vehicle according to claim 1 or 2, wherein a supplying electrode (33) of the one or more supplying electrodes (32, 33, 35, 39) includes a rectangular member (33a) formed in a rectangular shape. [4] A window glass for a vehicle according to claim 3, wherein the supplying electrode (33) further includes a first member (33b) extending from one side of the rectangular member (33a), the first member (33b) having a width smaller than a length of one side of the rectangular member (33a). [5] Window pane for a vehicle according to claim 4, wherein the rectangular element (33a) is an elongated element having an elongated shape, and wherein the first element (33b) has a width which is smaller than a length of a short side of the elongated element. [6] Window pane for a vehicle according to claim 5, wherein the supplying electrode (33) further includes a second element (33c) which is conductively connected to the elongated element, and wherein the second element (33c) has a width which is smaller than the length of the short side of the elongate element. [7] Window pane for a vehicle according to claim 6, wherein the second element (33c) has a part extending from the short side of the elongated element to which the first element (33b) is connected in a direction parallel to a long side of the elongated element, and wherein a conductor length of the second element (33c) is shorter than a conductor length of the first element (33b). [8] A window glass for a vehicle according to claim 6, wherein the second member (33c) extends from a part of the first member (33b) other than an end portion of the first member (33b) in a direction orthogonal to the extending direction of the first member (33b), bends, extends further, and has an open end. [9] A window pane for a vehicle according to any one of claims 1 to 8, wherein the supplying electrode (33) and the grounding electrode are arranged along one side of the transmissive region (14). [10] A window pane for a vehicle according to any one of claims 1 to 8, wherein a supplying electrode and a grounding electrode are disposed outwardly relative to a first side of the transmissive region (14) and another supplying electrode and another grounding electrode are disposed outwardly relative to a second side of the transmissive region (14), the supplying electrode and the other supplying electrode being derived from the one or more supplying electrodes (32, 33, 35, 39) and the grounding electrode and the other grounding electrode being derived from the one or more grounding electrodes (37, 38). [11] A window glass for a vehicle according to claim 10, wherein, in a state where the window glass (101, 102) for a vehicle is installed in a vehicle, the first side is a left side of the transmissive region (14) and the second side is a right side of the transmissive region (14) as viewed from the inside of the vehicle. [12] Window pane for a vehicle according to one of claims 1 to 11, wherein the glass plate (10) is a first glass plate and the dielectric (20) is a second glass plate and wherein the first glass plate and the second glass plate are connected to each other via an intermediate film (40). [13] Window pane for a vehicle according to one of claims 1 to 12, wherein the planar conductor (50) is formed by a conductor surface. [14] A window glass for a vehicle according to claim 13, wherein an inner edge of the light-shielding film (13) is arranged inward relative to an outer edge of the planar conductor (50). [15] A window pane for a vehicle according to claim 13 or 14, further comprising: a second supply electrode (32) arranged on the second surface (22) of the dielectric (20), wherein the one or more supply electrodes (32, 33, 35, 39) is (are) a second supply electrode (32), wherein the second supplying electrode (32) is directed to the planar conductor (50) via the dielectric (20) so that the planar conductor (50) receives at least electromagnetic waves of the MF (medium frequency) band. [16] Window pane for a vehicle according to claim 15, where a coupling capacitance C c between the planar conductor (50) and the second supply electrode (32) a relationship is satisfied Cc≥Ci×Ca×vxdBvaCa−(Ca+Ci)×vxdBva where C a is an antenna capacitance of the planar conductor (50), C i is an input capacitance of an amplifier (60, 61, 62) connected to the second supplying electrode (32), v xdB a voltage value which is x decibels lower than a voltage value output by the second supplying electrode (32) when the coupling capacitance C c is infinite, and v a is a reception voltage value of the planar conductor (50). [17] Window pane for a vehicle according to one of claims 1 to 12, wherein the planar conductor (50) is divided by a dividing line extending in a horizontal direction and, in a state where the window pane (101, 102) for a vehicle is installed in a vehicle, includes a first conductor region above the dividing line and a second conductor region below the dividing line, wherein the positive electrode (57) and the negative electrode (58) are not connected to the first conductor region and the positive electrode (57) and the negative electrode (58) are connected to the second conductor region, wherein the one or more supplying electrodes (32, 33, 35, 39) are directed to the first conductor region via the dielectric (20) or are directed to both the first conductor region and the second conductor region via the dielectric (20), and wherein the one or more grounding electrodes (37, 38) are not directed towards the first conductor region and are directed towards the second conductor region via the dielectric (20). [18] A window glass for a vehicle according to claim 17, wherein when a vertical size of the first conductor is designated as L1 and a vertical size of the second conductor is designated as L2, a ratio L1 / L2 is 1 / 15 or more and 1 / 3 or less. [19] A window glass for a vehicle according to claim 17 or 18, wherein an inner edge of the light-shielding film (13) is disposed inside an outer edge of the first conductor region and an outer edge of the second conductor region except for portions of the outer edges along the dividing line. [20] Window pane for a vehicle according to one of claims 17 to 19, further comprising: a second supply electrode (32) arranged on the second surface (22) of the dielectric (20), wherein the one or more supply electrodes (32, 33, 35, 39) is (are) a second supply electrode, wherein the second supplying electrode (32) is directed to the first conductor region via the dielectric (20) so that the first conductor region receives at least electromagnetic waves of the MF (medium frequency) band. [21] Window pane for a vehicle according to claim 20, where a coupling capacitance C c between the first conductor region and the second supply electrode (32) a relationship is satisfied Cc≥Ci×Ca×vxdBvaCa−(Ca+Ci)×vxdBva where C a is an antenna capacitance of the first conductor region, C i is an input capacitance of an amplifier (60, 61, 62) connected to the second supplying electrode (32), v xdBa voltage value which is x decibels lower than a voltage value output by the second supplying electrode (32) when the coupling capacitance C c is infinite, and v a is a receiving voltage value of the first conductor region, where x is 3.0 or less. [22] A window glass for a vehicle according to any one of claims 15, 16, 20 and 21, wherein the second supplying electrode (32) is arranged above the upper side of the transmissive region (14) and formed in a horizontally elongated shape in a state where the window glass (101, 102) for a vehicle is installed in a vehicle. [23] A window pane for a vehicle according to any one of claims 15, 16 and 20 to 22, further comprising: a conductor pattern arranged on the second surface (22) of the dielectric (20), arranged outside the second supplying electrode (32) and receiving at least electromagnetic waves of a UHF band. [24] A window pane for a vehicle according to any one of claims 15, 16 and 20 to 22, further comprising: a conductor pattern arranged on the second surface (22) of the dielectric (20), arranged in at least a part of a region defined by a bending portion formed by an outer edge of the planar conductor (50) which is locally bent toward the interior of the planar conductor (50), and receiving at least electromagnetic waves of a UHF band. [25] Window pane device (1010, 1010a, 1011, 1012, 1013, 1014, 1015, 1020, 1021) for a vehicle, comprising: the window pane (101, 102) for a vehicle according to claim 15 or 16; and a choke coil (86) connected to the positive electrode (57) and the negative electrode (58), wherein the choke coil (86) blocks at least signals of the MF band. [26] A window pane device for a vehicle according to claim 25, further comprising: a coil (85) connected to the second supply electrode (32), wherein the coil (85) blocks at least signals of a VHF band. [27] A window pane device for a vehicle according to claim 25 or 26, further comprising: a coil (81) on the side of the positive electrode (57) which is connected to the positive electrode (57); and a coil (83) on the side of the negative electrode (58) which is connected to the negative electrode (58), wherein the coil (81) on the side of the positive electrode (57) and the coil (83) on the side of the negative electrode (58) block at least signals of a VHF band. [28] Window pane device (1010, 1010a, 1011, 1012, 1013, 1014, 1015, 1020, 1021) for a vehicle, comprising: the window pane (101, 102) for a vehicle according to any one of claims 15, 16 and 20 to 24; and a coil (85) connected to the second supply electrode (32), wherein the (85) coil blocks at least signals of a VHF band. [29] Window pane device (1010, 1010a, 1011, 1012, 1013, 1014, 1015, 1020, 1021) for a vehicle, comprising: the window pane (101, 102) for a vehicle according to one of claims 1 to 24; a coil (81) on the side of the positive electrode (57) which is connected to the positive electrode (58); and a coil (83) on the side of the negative electrode (58) which is connected to the negative electrode (58), wherein the coil (81) on the side of the positive electrode (57) and the coil (83) on the side of the negative electrode (58) block at least signals of a VHF band. [30] A window glass device for a vehicle according to claim 27 or 29, wherein the coil (81) on the positive electrode (57) side and the coil (83) on the negative electrode (58) side block at least signals of a frequency band of FM broadcast waves. [31] Window pane device (1010, 1010a, 1011, 1012, 1013, 1014, 1015, 1020, 1021) for a vehicle, comprising: the window pane (101, 102) for a vehicle according to one of claims 1 to 24, wherein the planar conductor (50) has a side region (71) directed toward a metallic body of a vehicle on at least one of a right and left side of the planar conductor (50), and where the earthing electrode is the metallic body. [32] Window pane device for a vehicle according to claim 31, wherein the planar conductor (50) is connected to the side region (71) via a connecting part (73) which intersects or crosses a boundary of the metallic body in a planar view, and wherein the side region (71) is arranged as an island. [33] Window pane device (1010, 1010a, 1011, 1012, 1013, 1014, 1015, 1020, 1021) for a vehicle, comprising: the window pane (101, 102) for a vehicle according to one of claims 1 to 24, wherein the planar conductor (50) has a side region (71) directed toward a metallic body of a vehicle on at least one of a right and left side of the planar conductor (50), wherein the side region (71) is connected to the planar conductor (50) via a connecting part (73) which intersects or crosses a boundary of the metallic body in a planar view, wherein the connecting part (73) includes a turning part which turns along the second surface (22) of the dielectric (20), the second surface (22) being directed towards the metallic body, and where the earthing electrode contains the metallic body. [34] Window pane device for a vehicle according to one of claims 31 to 33, wherein a coupling capacitance C B between the side region (71) and the metallic body is 3 pF or more. [35] Window pane device (1010, 1010a, 1011, 1012, 1013, 1014, 1015, 1020, 1021) for a vehicle, comprising: the window pane (101, 102) for a vehicle according to one of claims 1 to 24, wherein the planar conductor (50) is provided with a side region (71) directed toward a metallic body of a vehicle on at least one of a right and left side of the planar conductor (50), wherein the side region (71) is electrically connected to a capacitive coupling part via a connecting part (73), wherein the capacitive coupling part is capacitively coupled to the planar conductor (50), and where the earthing electrode contains the metallic body. [36] A window glass device for a vehicle according to claim 35, wherein a combined coupling capacitance C2 of a coupling capacitance C Bbetween the side region (71) and the metallic body and a coupling capacitance C1 between the capacitive coupling part and the planar conductor (50), obtained by C1 · C B / (C1 + C B ), 3 pF or more. [37] Window pane device (1010, 1010a, 1011, 1012, 1013, 1014, 1015, 1020, 1021) for a vehicle, comprising: the window pane (101, 102) for a vehicle according to one of claims 1 to 24, wherein the planar conductor (50) has a connecting part (73) on at least one of a right and left side of the planar conductor (50), wherein the planar conductor (50) comprises a linear conductor connected to the connecting part (73), which does not overlap with the metallic body and is arranged along the metallic body in a plan view, wherein the linear conductor is capacitively coupled to the metallic body, and where the earthing electrode contains the metallic body. [38] A window glass device for a vehicle according to claim 37, wherein a coupling capacitance C3 between the linear conductor and the metallic body is 3 pF or more.

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