Vehicle window glass and vehicle window glass system

Abstract

Provided are: a vehicle window glass which comprises a laminated glass that is movable with respect to a vehicle body and can receive power in a wireless mode from the vehicle body side; and a vehicle window glass system.　The vehicle window glass is provided with: a laminated glass which includes a first glass sheet that is provided on the exterior side of the vehicle body, a second glass sheet that is provided on the interior side of the vehicle body, and an intermediate film that is provided between the first glass sheet and the second glass sheet, and which is movable with respect to the vehicle body; a power receiving coil which is provided on the first glass sheet or the second glass sheet or is provided between the first glass sheet and the second glass sheet and receives power from a power transmission coil provided on the vehicle body side; and a functional member which is provided between the first glass sheet and the second glass sheet and to which power received by the power receiving coil is supplied.

Description

[Technical Field]

[0001] FIELD OF THE DISCLOSURE The present disclosure relates to vehicle glazings and vehicle glazing systems. [Background technology]

[0002] Conventionally, there has been a side glass used in a vehicle, which includes a rectangular first glass plate, a first bus bar extending along a first side of the first glass plate, a second bus bar extending along a second side of the first glass plate, and a plurality of heating wires arranged in parallel to connect the first bus bar and the second bus bar, and the first and second bus bars are configured to be invisible from outside or inside the vehicle by a shielding portion. The side glass includes a second glass plate having substantially the same shape as the first glass plate, and an interlayer film arranged between the first and second glass plates, and the first bus bar, the second bus bar, and the plurality of heating wires are arranged between the first and second glass plates. The first glass plate, the interlayer film, and the second glass plate are laminated glass (see, for example, Patent Document 1). [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Japanese Patent Application Publication No. 2018-030459 Summary of the Invention [Problem to be solved by the invention]

[0004] In order to supply power to a heating wire arranged between laminated glass that is movable relative to the vehicle, such as a side window, and to connect a power source on the vehicle body to the heating wire in the laminated glass with a power cable or the like, the length of the power cable must be provided with some slack to take into account displacement due to sliding of the laminated glass. In such a case, when the laminated glass is opened, the power cable or the like may slacken and interfere with a sliding mechanism, such as a regulator, that slides the laminated glass. Thus, when power is supplied via a wire to laminated glass that is movable relative to the vehicle, there is a risk of interference with the sliding mechanism, and the same applies when power is supplied to components other than the heating wire.

[0005] Therefore, an object of the present invention is to provide a vehicle window glass and a vehicle window glass system that include laminated glass that is movable relative to the vehicle body and can receive power wirelessly from the vehicle body side. [Means for solving the problem]

[0006] A vehicle window glass according to an embodiment of the present disclosure includes a laminated glass that has a first glass plate provided on an exterior side of a vehicle body, a second glass plate provided on an interior side of the vehicle body, and an intermediate film provided between the first glass plate and the second glass plate, and is movable with respect to the vehicle body; a power receiving coil that is provided on the first glass plate or the second glass plate, or between the first glass plate and the second glass plate, and receives power from a power transmitting coil that is arranged on the vehicle body side; and a functional member that is provided between the first glass plate and the second glass plate and is supplied with power received by the power receiving coil. [Effects of the Invention]

[0007] It is possible to provide a vehicle window glass and a vehicle window glass system that include laminated glass that is movable relative to the vehicle body and can receive power wirelessly from the vehicle body side. [Brief explanation of the drawings]

[0008] [Figure 1]1 is a diagram showing an example of a cross-sectional structure of a vehicle window glass 100A according to an embodiment and a door 20 of a vehicle 10 equipped with the vehicle window glass system 100.

[0023] FIG. [Figure 2] FIG. 1 is a diagram showing a laminated glass 110 and an opening 11. [Figure 3] FIG. 2 is an enlarged view showing the cross-sectional structure of the laminated glass 110 and the substrate 120 shown in FIG. [Figure 4] 1 is a diagram showing the structures of a substrate 120, a power receiving coil 120A, and an adjustment circuit 121. FIG. [Figure 5] 1 is a diagram showing a circuit configuration of a vehicle window glass system 100. FIG. [Figure 6] 2 is an enlarged view showing the structure of a power transmission coil 150A. FIG. [Figure 7] 10 is an enlarged view showing the structure of an FPC 125M according to a first modified example of the embodiment. FIG. [Figure 8] 10 is a diagram showing an example of a cross-sectional structure of a vehicle window glass 100AM2 according to a second modified example of the embodiment, and a door 20 of a vehicle 10 equipped with a vehicle window glass system 100M2. FIG. [Figure 9] 10 is a diagram showing an example of a cross-sectional structure of a door 20 of a vehicle 10 equipped with a vehicle window glass 100A according to a third modified example of the embodiment and a vehicle window glass system 100M3. FIG. [Figure 10] 10 is a diagram showing an example of a planar configuration of a power receiving coil 120A and a power transmitting coil 150AM4 included in a vehicle window glass system according to a fourth modified example of the embodiment. FIG. [Figure 11] 10 is a diagram showing an example of a planar configuration of a power receiving coil 120A and a power transmitting coil 150AM5 included in a vehicle window glass system according to a fifth modified example of an embodiment. FIG. DETAILED DESCRIPTION OF THE INVENTION

[0009] <Embodiment> Hereinafter, embodiments of the vehicle window glass and vehicle window glass system according to the present disclosure will be described. For ease of understanding, the scales of the various components in the drawings may differ from the actual scale. Deviations in directions such as parallel, right-angled, orthogonal, and vertical directions are permitted to the extent that they do not impair the effects of the embodiments. The shape of the corners is not limited to right angles and may be rounded like an arch. Below, an XYZ coordinate system, which is a Cartesian coordinate system, is used. The X-axis, Y-axis, and Z-axis directions represent directions parallel to the X-axis, Y-axis, and Z-axis, respectively. The X-axis, Y-axis, and Z-axis directions are mutually orthogonal. The XY plane, YZ plane, and ZX plane represent imaginary planes parallel to the X-axis and Y-axis directions, imaginary planes parallel to the Y-axis and Z-axis directions, and imaginary planes parallel to the Z-axis and X-axis directions, respectively. Planar view refers to viewing from an XY plane.

[0010] Examples of the vehicle window glass in this embodiment include side glass attached to the side of the vehicle and movable relative to the vehicle body, and roof glass attached to the ceiling of the vehicle body and movable relative to the vehicle body, but the window glass is not limited to these examples.

[0011] <Cross-sectional structure of the door 20 of the vehicle 10> 1 is a diagram showing an example of a cross-sectional structure of a vehicle window glass 100A according to an embodiment and a door 20 of a vehicle 10 equipped with a vehicle window glass system 100. The door 20 is a part of the body of the vehicle 10. In the following description, it is assumed that the door 20 is closed.

[0012] Here, the vehicle 10 is, for example, an automobile such as an EV (Electric Vehicle), a PHEV (Plug-in Hybrid Electric Vehicle), an HV (Hybrid Vehicle), a gasoline vehicle, or a diesel vehicle. The vehicle 10 may also be a train or steam locomotive. The vehicle 10 is an example of a moving body that moves and carries passengers.

[0013] The door 20 shown in Fig. 1 is, as an example, the right rear door of the four doors of the vehicle 10, and Fig. 1 shows a cross-sectional structure viewed from the rear to the front of the vehicle 10. A vehicle window glass 100A and a vehicle window glass system 100 are attached to the door 20, and the vehicle window glass 100A is movable with respect to the door 20. The vehicle window glass 100A is a side glass.

[0014] In this embodiment, the X-axis direction is the front-to-rear direction of the vehicle 10. The Y-axis direction is the up-and-down direction of the vehicle window glass 100A, and is the direction in which the vehicle window glass 100A can slide relative to the door 20. The +Y-axis direction is the sliding direction for closing the vehicle window glass 100A, and the -Y-axis direction is the sliding direction for opening the vehicle window glass 100A. As an example, the vehicle window glass 100A is attached in an inclined state relative to the vehicle 10, so the Y-axis direction is inclined with respect to the up-and-down direction, which is the vertical direction in FIG. 1 . The Z-axis direction is the direction penetrating the vehicle window glass 100A in the thickness direction. The -Z-axis direction side of the vehicle window glass 100A is the exterior side of the vehicle body, and the +Z-axis direction side of the vehicle window glass 100A is the interior side of the vehicle body.

[0015] FIG. 1 shows the positional relationship of each part when the laminated glass 110 is completely closed relative to the vehicle body. The completely closed state of the laminated glass 110 refers to a state in which the amount of movement of the vehicle window glass 100A relative to the door 20 in the +Y axis direction has reached its maximum. FIG. 1 does not show the entire laminated glass 110 in the Y axis direction, but shows the portion in the -Y axis direction close to the outer panel 21 and inner panel 22. The outer panel 21 is the panel on the exterior side of the door 20. The inner panel 22 is the panel on the interior side of the door 20.

[0016] The opening 11 is an opening that appears in the vehicle body when the laminated glass 110 is opened, and is completely closed when the laminated glass 110 is completely closed relative to the vehicle body. The positional relationship between the opening 11 and the laminated glass 110 in a plan view will be described later with reference to FIG. 2.

[0017] 1 shows the components of the door 20, namely, an outer panel 21, an inner panel 22, and weatherstrips 23 and 24. The weatherstrip 23 is an outer weatherstrip provided on the outside of the vehicle body, and the weatherstrip 24 is an inner weatherstrip provided on the inside of the vehicle body.

[0018] The vehicle window glass 100A is disposed between weatherstrips 23, 24 and is slidable along the Y-axis direction while abutting against the weatherstrips 23, 24. The weatherstrips 23, 24 are provided to remove water, dust, and the like adhering to the vehicle window glass 100A and prevent them from entering the outer panel 21 and the inner panel 22. Note that a regulator that slides the vehicle window glass 100A along the Y-axis direction relative to the door 20 is omitted here. As an example, the regulator is disposed inside the inner panel 22, closer to the interior side (+Z-axis direction) than the vehicle window glass 100A.

[0019] <Overall configuration of vehicle window glass 100A and vehicle window glass system 100> The vehicle window glass 100A includes a laminated glass 110, a substrate 120, a power receiving coil 120A, an adjustment circuit 121, an FPC (Flexible Printed Circuit) 125, and a dimming panel 130. The dimming panel 130 is an example of a functional member, and is a panel whose light transmittance changes. The vehicle window glass system 100 includes the vehicle window glass 100A and a power transmitting coil 150A. The power transmitting coil 150A is mounted on the substrate 150. The vehicle window glass system 100 may include the substrate 150 in addition to the vehicle window glass 100A and the power transmitting coil 150A.

[0020] Here, an embodiment will be described in which the dimming panel 130 is an example of a functional member, but the functional member is not limited to the dimming panel 130. The functional member may be any member that operates using power supplied from the vehicle 10 and performs a predetermined function, and examples of the functional member other than the dimming panel 130 include a heating wire, an LCD (Liquid Crystal Display), and an OLED (Organic Light-Emitting Diode) display. The following description will be made with reference to Figs. 2 to 6 in addition to Fig. 1.

[0021] FIG. 2 is a diagram showing the laminated glass 110 and the opening 11. FIG. 2 shows the laminated glass 110 as seen from the interior side in a fully closed state. The cross section of FIG. 1 corresponds to the cross section taken along the line AA in FIG. 2. FIG. 2 also shows the opening 11 in the vehicle body by a broken line. The opening 11 is an opening that appears in the vehicle body when the laminated glass 110 is opened, and when the laminated glass 110 is opened to its fullest extent, the opening area of ​​the opening 11 becomes its maximum. Here, as an example, a configuration will be described in which, when the laminated glass 110 is opened to its fullest extent, the laminated glass 110 completely fits between the outer panel 21 and the inner panel 22 of the door 20. The fully opened state of the laminated glass 110 refers to a state in which the movement amount of the vehicle window glass 100A relative to the door 20 reaches its maximum in the -Y axis direction.

[0022] 2, when the laminated glass 110 is completely closed relative to the vehicle body, the opening 11 is completely closed by the laminated glass 110. When the laminated glass 110 is completely closed relative to the vehicle body, the portion of the laminated glass 110 that is below the opening 11 is not exposed to the opening 11 and cannot be seen from outside the door 20.

[0023] Fig. 3 is an enlarged view showing the cross-sectional structures of the laminated glass 110 and the substrate 120 shown in Fig. 1. Fig. 4 is a view showing the structures of the substrate 120, the power receiving coil 120A, and the adjustment circuit 121. Fig. 5 is a view showing the circuit configuration of the vehicle window glass system 100. Fig. 6 is an enlarged view showing the structure of the power transmitting coil 150A.

[0024] <Laminated Glass 110> 3, the laminated glass 110 is formed by bonding a glass plate 111 provided on the exterior side of the vehicle body to a glass plate 112 provided on the interior side of the vehicle body via an intermediate film 113 disposed between the glass plates 111 and 112. In addition, a light control panel 130 and an FPC 125 are provided between the glass plates 111 and 112 of the laminated glass 110.

[0025] Glass plate 111 is an example of a first glass plate, and glass plate 112 is an example of a second glass plate. Laminated glass 110 is provided so as to be movable along the Y-axis direction relative to the vehicle body. Being movable along the Y-axis direction relative to the vehicle body means being movable in the up-and-down direction relative to door 20.

[0026] The glass plates 111 and 112 may be inorganic glass or organic glass. Examples of inorganic glass that can be used include, without particular limitation, soda-lime glass, aluminosilicate glass, borosilicate glass, alkali-free glass, and quartz glass. Among these, soda-lime glass is particularly preferred from the viewpoints of manufacturing cost and formability. The forming method of the glass plates 111 and 112 is not particularly limited. For example, in the case of inorganic glass, glass plates formed by a float method or the like are preferred.

[0027] When the glass plates 111 and 112 are inorganic glass, they may be either untempered glass or tempered glass. Untempered glass is produced by forming molten glass into a plate shape and slowly cooling it. Tempered glass is produced by forming a compressive stress layer on the surface of untempered glass, and may be either air-cooled tempered glass or chemically tempered glass.

[0028] If the tempered glass is physically tempered glass (e.g., air-cooled tempered glass), the glass surface may be tempered by a process other than slow cooling, such as rapidly cooling a uniformly heated glass sheet from a temperature near its softening point during bending, thereby generating a compressive stress layer on the glass surface due to the temperature difference between the glass surface and the interior of the glass. If the tempered glass is chemically tempered glass, the glass surface may be tempered after bending by generating compressive stress on the glass surface using an ion exchange method or the like. Furthermore, glass that absorbs ultraviolet or infrared rays may be used as the glass sheets 111 and 112. The glass sheets 111 and 112 are preferably transparent, but may also be colored to the extent that transparency is not impaired.

[0029] The laminated glass 110 may have a curved shape such that the exterior side is convex when attached to the vehicle 10. The laminated glass 110 may have a single-curve shape bent in only one direction, or may have a compound-curve shape bent in two directions (for example, the vertical direction when the laminated glass 110 is attached to the vehicle 10 and the horizontal direction perpendicular to the vertical direction). Gravity forming, press forming, roller forming, or the like is used to bend the laminated glass 110. When the laminated glass 110 is bent to a predetermined curvature, the radius of curvature of the laminated glass 110 may be 1,000 mm or more and 100,000 mm or less.

[0030] Furthermore, when the laminated glass 110 is installed in the vehicle 10, the thickness of the glass plate 111 located on the exterior side and the thickness of the glass plate 112 located on the interior side may be the same or different. The thickness of the glass plate 111 is preferably 1.0 mm or more and 3.0 mm or less. A thickness of 1.0 mm or more of the glass plate 111 provides sufficient strength for resistance to stone chips, etc., and a thickness of 3.0 mm or less prevents the laminated glass 110 from becoming too heavy, which is preferable in terms of fuel economy of the vehicle 10. The thickness of the glass plate 112 is preferably 0.3 mm or more and 2.3 mm or less. A thickness of 0.3 mm or more of the glass plate 112 provides good handling, and a thickness of 2.3 mm or less prevents the mass from becoming too heavy. It is preferable that the thicknesses of the glass plates 111 and 112 are each 1.8 mm or less, since this allows the laminated glass 110 to achieve both lightweight and sound insulation. When the thickness of the glass plate 112 is 1.0 mm or less, the glass plate 112 may be chemically strengthened glass. When the glass plate 112 is chemically strengthened glass, it is preferable that the compressive stress value of the glass surface is 300 MPa or more, and the depth of the compressive stress layer is 2 μm or more.

[0031] When the glass plates 111 and 112 are made of organic glass, examples of the material for the organic glass include transparent resins such as polycarbonate and acrylic resins (for example, polymethyl methacrylate).

[0032] As shown in FIG. 3 , the FPC 125 is bent at a position on the −Y-axis direction side of the substrate 120 and the dimming panel 130, and connects the end of the substrate 120 on the −Y-axis direction side to the end of the dimming panel 130 on the −Y-axis direction side. As shown in FIG. 2 , the dimming panel 130 is provided in an area that blocks the opening 11 when the laminated glass 110 is completely closed relative to the vehicle body, out of the entire area of ​​the laminated glass 110 in a plan view. This is because the dimming panel 130 is disposed in a position that is visible from both the outside and inside of the vehicle body when the laminated glass 110 is completely closed relative to the vehicle body. The dimming panel 130 and the FPC 125 may have an overlapping portion between the glass plates 111 and 112, but as an example, the following description will be given assuming that there is no overlapping portion.

[0033] The interlayer 113 has dielectric properties and is a transparent or semi-transparent dielectric material interposed between the glass plates 111 and 112 as shown in FIG. 3. The glass plates 111 and 112 are joined by the interlayer 113. Examples of materials for the interlayer 113 include thermoplastic polyvinyl butyral (PVB) and ethylene vinyl acetate copolymer (EVA). The interlayer 113 may be transparent or colored. The interlayer 113 may also be composed of two or more layers of film.

[0034] 3, in the portion where the dimming panel 130 is present in a plan view, the interlayer film 113 is disposed between the glass plate 111 and the dimming panel 130 and between the dimming panel 130 and the glass plate 112. However, the interlayer film 113 is not limited to this configuration, and may be disposed between the glass plate 111 and the dimming panel 130, but not between the dimming panel 130 and the glass plate 112. Furthermore, the interlayer film 113 may be disposed between the dimming panel 130 and the glass plate 112, but not between the glass plate 111 and the dimming panel 130.

[0035] 3, in the area where the FPC 125 is present in plan view, the intermediate film 113 is disposed between the glass plate 111 and the FPC 125 and between the FPC 125 and the glass plate 112. However, the intermediate film 113 is not limited to this configuration, and may be disposed between the glass plate 111 and the FPC 125, but not between the FPC 125 and the glass plate 112. The intermediate film 113 may be disposed between the glass plate 112 and the FPC 125, but not between the FPC 125 and the glass plate 111.

[0036] <Substrate 120> 1, for example, the substrate 120 is fixed to the exterior surface of the laminated glass 110 at an end portion on the +X-axis direction side of the lower end of the laminated glass 110. As shown in Fig. 3, the receiving coil 120A and the adjustment circuit 121 are mounted on the substrate 120, and an FPC 125 is connected to the substrate 120. The substrate 120 may be any wiring substrate as long as it is capable of mounting the receiving coil 120A and the adjustment circuit 121, and may be a rigid substrate or a flexible substrate conforming to the FR4 (Flame Retardant type 4) standard.

[0037] 3, the power receiving coil 120A and the adjustment circuit 121 are mounted on the surface of the substrate 120 on the −Z axis direction side, for example. The FPC 125 is connected to the lower end (the end on the −Y axis direction side) of the substrate 120. The power receiving coil 120A is connected to the adjustment circuit 121 via wiring on the substrate 120, and the adjustment circuit 121 is connected to the FPC 125 via wiring on the substrate 120. The FPC 125 is, for example, a flexible wiring board in which wiring is formed by patterning copper foil or the like on a flexible substrate made of polyimide. The wiring of the FPC 125 connects the adjustment circuit 121 and the dimming panel 130.

[0038] FIG. 4 also shows the planar and cross-sectional structures of the substrate 120 and the power receiving coil 120A. FIG. 4(B) shows a cross section taken along the arrow BB in FIG. 4(A). As shown in FIG. 4(B), the substrate 120 is a laminated substrate having insulating layers 122A and 122B. The insulating layer 122A is located on the +Z-axis direction side of the substrate 120, and a wiring portion 120A5 and an insulating layer 122B of the power receiving coil 120A are laminated on the surface of the insulating layer 122A on the −Z-axis direction side. An insulating layer 122B is also laminated on the −Z-axis direction side of the wiring portion 120A5. The wiring portion 120A5 is located in an inner layer sandwiched between the insulating layers 122A and 122B. The power receiving coil 120A is formed on the surface of the insulating layer 122B and between the insulating layers 122A and 122B. The configuration of this power receiving coil 120A will be described below.

[0039] <Receiving coil 120A> As shown in FIGS. 1 and 3 , the power receiving coil 120A is mounted on the surface of the substrate 120 on the −Z axis direction side, and faces the power transmitting coil 150A as shown in FIG. 1 when the laminated glass 110 is completely closed relative to the vehicle body. When the laminated glass 110 is completely closed relative to the vehicle body, the position of the power receiving coil 120A in the XY plane is aligned with that of the power transmitting coil 150A. Although the power transmitting coil 150A is not shown in FIG. 2 , the power transmitting coil 150A is disposed on the −Z axis direction side of the power receiving coil 120A in FIG. 2 at the same position as the power receiving coil 120A. For example, the coil shapes of the power receiving coil 120A and the power transmitting coil 150A in a plan view are the same. For example, the power receiving coil 120A faces the power transmitting coil 150A with a gap of approximately 10 mm in the Z axis direction.

[0040] 4(A) and 4(B), the power receiving coil 120A has a terminal 120A1, a wiring portion 120A2, a connection point 120A3, a via 120A4, a wiring portion 120A5, a via 120A6, a connection portion 120A7, a wiring portion 120A8, and a terminal 120A9. Of these, the terminal 120A1, the wiring portion 120A2, the connection point 120A3, the connection portion 120A7, the wiring portion 120A8, and the terminal 120A9 are located on the surface of the insulating layer 122B on the −Z-axis direction side. The wiring portion 120A5 is located in an inner layer of the insulating layers 122A and 122B.

[0041] An insulating layer similar to insulating layers 122A and 122B may be further provided on the surfaces of terminal 120A1, wiring portion 120A2, connection point 120A3, connection portion 120A7, wiring portion 120A8, and terminal 120A9 on the -Z axis direction side of insulating layer 122B, or a protective layer different from insulating layers 122A and 122B may be provided, or insulating layer 122B may not be provided. Note that power receiving coil 120A may be formed by looping a conductive wire with an insulating coating (for example, solenoid winding, α winding, etc.).

[0042] As shown in FIG. 4A, terminal 120A1 is connected to rectifier circuit 121A, and wiring portion 120A2 is patterned in a spiral shape in a plan view between terminal 120A1 and connection point 120A3. Connection point 120A3 and wiring portion 120A5 are connected by via 120A4 that penetrates insulating layer 122B in the Z-axis direction as shown in FIG. 4B, and wiring portion 120A5 and connection portion 120A7 are connected by via 120A6 that penetrates insulating layer 122B in the Z-axis direction as shown in FIG. 4B. Connection portion 120A7 and terminal 120A9 are connected by wiring portion 120A8, and terminal 120A9 is connected to rectifier circuit 121A. In this way, power receiving coil 120A is wound as a coil between terminal 120A1 and terminal 120A9.

[0043] When the laminated glass 110 is completely closed relative to the vehicle body and the power receiving coil 120A faces the power transmitting coil 150A at a distance in the Z-axis direction as shown in FIG. 1 , the power receiving coil 120A is electromagnetically coupled to the power transmitting coil 150A. Therefore, the power receiving coil 120A is supplied with power wirelessly from the power transmitting coil 150A by electromagnetic induction in a non-contact state with the power transmitting coil 150A. The non-contact state between the power receiving coil 120A and the power transmitting coil 150A refers to a state in which the power receiving coil 120A and the power transmitting coil 150A are not in physical contact with each other and are separated from each other. Power is supplied from the power transmitting coil 150A to the power receiving coil 120A wirelessly by electromagnetic induction.

[0044] The power received by the power receiving coil 120A from the power transmitting coil 150A is adjusted by the adjustment circuit 121 and supplied to the light control panel 130 via the FPC 125. Therefore, the light control panel 130 can change the light transmittance and the like while the laminated glass 110 is completely closed relative to the vehicle body. By changing the light transmittance and the like, the light blocking property can be adjusted.

[0045] Here, the expression "power receiving coil 120A is electromagnetically coupled to power transmitting coil 150A" means that power receiving coil 120A is not physically coupled to power transmitting coil 150A, that is, power receiving coil 120A and power transmitting coil 150A are spaced apart by a distance that allows them to be electromagnetically coupled, but power receiving coil 120A can receive from power transmitting coil 150A an amount of power that is sufficient to change the transmittance, etc., of light control panel 130. As an example, light control panel 130 is assumed to be used in a state where laminated glass 110 is completely closed relative to the vehicle body, and power receiving coil 120A is disposed to face power transmitting coil 150A in a state where laminated glass 110 is completely closed relative to the vehicle body.

[0046] The reason why it is assumed that the light control panel 130 is used when the laminated glass 110 is completely closed relative to the vehicle body is as follows: When the laminated glass 110 is completely closed relative to the vehicle body, the light control panel 130 is pulled out from between the outer panel 21 and the inner panel 22, blocking the opening 11 as shown in FIG. 2, and appears in a position visible from both the outside and inside of the vehicle body.

[0047] However, if electromagnetic field coupling between the receiving coil 120A and the transmitting coil 150A can be obtained even when the laminated glass 110 is opened slightly in the -Y axis direction from the completely closed state, and if it is possible to receive power sufficient to change the transmittance, etc. of the dimming panel 130, the dimming panel 130 may be used within the range in which power can be received.

[0048] Here, a configuration has been described in which the power receiving coil 120A is mounted on the surface of the substrate 120 on the −Z axis direction side, and the substrate 120 is attached to the surface of the glass plate 111 on the −Z axis direction side. That is, a configuration has been described in which the power receiving coil 120A is provided on the glass plate 111 via the substrate 120. However, the power receiving coil 120A may be provided on the glass plate 112 via the substrate 120, or may be provided between the glass plates 111 and 112. When the power receiving coil 120A is provided on the glass plate 112, for example, the substrate 120 may be attached to the surface of the glass plate 112 on the +Z axis direction side, and the power receiving coil 120A may be mounted on the surface of the substrate 120 on the +Z axis direction side. This configuration will be described later with reference to FIG. 8. A configuration in which the power receiving coil 120A is provided between the glass plates 111 and 112 will be described later with reference to FIG. 7.

[0049] <Circuit Configuration of Adjustment Circuit 121 and Vehicle Window Glass System 100> 5, a power supply 50A of the vehicle 10 is connected to a power transmitting coil 150A via a power transmitting circuit 50B. The power supply 50A may be, for example, a battery that outputs DC power. Alternatively, the power supply 50A may be a power supply including a generator or an electric motor and a rectifier circuit that rectifies AC power generated by the generator or the electric motor into DC power.

[0050] The power transmission circuit 50B is a circuit that converts DC power output from the power supply 50A into AC power for transmission between the power transmission coil 150A and the power reception coil 120A, and may be, for example, an inverter.

[0051] The AC power transmitted from the power transmitting coil 150A is received by the power receiving coil 120A by electromagnetic induction. The power received by the power receiving coil 120A is output to the adjustment circuit 121.

[0052] The adjustment circuit 121 has a rectifier circuit 121A, a DC (Direct Current) / DC converter 121B, and a drive circuit 121C. The rectifier circuit 121A is connected to the power receiving coil 120A via wiring on the substrate 120. The drive circuit 121C is connected to the light control panel 130 via an FPC 125. The rectifier circuit 121A, the DC / DC converter 121B, and the drive circuit 121C are connected between the power receiving coil 120A and the FPC 125 in this order.

[0053] The rectifier circuit 121A full-wave rectifies the AC power received by the power receiving coil 120A and outputs the result, and the DC / DC converter 121B converts the DC voltage value of the power full-wave rectified by the rectifier circuit 121A into a voltage value for the dimming panel 130 and outputs the result. The drive circuit 121C is an inverter that generates a PWM (Pulse Width Modulation) pulse signal from the DC power input from the DC / DC converter 121B and drives the dimming panel 130 via the FPC 125. The transmittance and the like of the dimming panel 130 are changed by adjusting the duty ratio of the PWM pulse signal output by the inverter serving as the drive circuit 121C.

[0054] Here, the adjustments that the adjustment circuit 121 performs on the AC power received by the receiving coil 120A include, for example, full-wave rectification, conversion of voltage values, generation of PWM pulse signals, and adjustment of duty ratios, but the adjustment circuit 121 may also perform other conversions and the like as adjustments on the AC power received by the receiving coil 120A.

[0055] <Dimming Panel 130> The dimming panel 130 is an example of a functional component whose transmittance changes depending on the duty ratio of a PWM pulse signal input from the drive circuit 121C via the FPC 125. The dimming panel 130 may be any panel whose transmittance changes depending on the duty ratio of a PWM pulse signal, and one example is a resin or glass panel to which a dimming device whose transmittance changes depending on the duty ratio of a PWM pulse signal is attached. Other dimming devices that can be used include suspended particle devices (SPDs), polymer dispersed liquid crystals (PDLCs), polymer network liquid crystals (PNLCs), guest-host liquid crystals, photochromic devices, electrochromic devices, and electrokinetic devices.

[0056] The light control panel 130 is transparent when the transmittance is at its maximum, and changes to an opaque state such as gray when the transmittance is at its minimum, and transmits almost no light. Here, as an example, it is assumed that the transmittance is at its minimum when the duty ratio of the PWM pulse signal of the light control panel 130 is 0%.

[0057] <Transmission coil 150A> As shown in FIG. 1, the power transmitting coil 150A is mounted on a substrate 150 and attached to an inner wall portion 21A on the inside of the outer panel 21 of the door 20. More specifically, the power transmitting coil 150A is mounted on the surface of the substrate 150 on the +Z-axis direction side, as shown in FIG. 6. As with the substrate 120, the substrate 150 may be, for example, a wiring substrate on which the power transmitting coil 150A can be mounted, and an FR4-standard rigid substrate or flexible substrate may be used. Note that the power transmitting coil 150A does not have to be mounted on the substrate 150. The power transmitting coil 150A may be formed by looping a conductive wire with an insulating coating (for example, solenoid winding, α winding, etc.), and may be supported by an insulating film such as polyimide or PET (Polyethylene Terephthalate) film.

[0058] The substrate 150 on which the power transmitting coil 150A is mounted is attached to the surface of the inner wall portion 21A on the +Z-axis direction side, as shown in Fig. 1. The position of the substrate 150 is such that the power transmitting coil 150A faces and is spaced apart from the power receiving coil 120A in the Z-axis direction when the laminated glass 110 is completely closed relative to the vehicle body, as shown in Fig. 1.

[0059] As shown in Fig. 6, the power transmitting coil 150A has terminals 150A1 and 150A2. The terminals 150A1 and 150A2 are connected to the power transmitting circuit 50B (see Fig. 5) via a power cable or the like. The power transmitting coil 150A receives power from the power source 50A via the power transmitting circuit 50B, and transmits the power wirelessly to the power receiving coil 120A by electromagnetic induction.

[0060] As described above, the vehicle window glass 100A and the vehicle window glass system 100 include the power receiving coil 120A that is provided on the glass sheet 111 or the glass sheet 112 of the laminated glass 110 that is movable with respect to the vehicle body and receives power from the power transmitting coil 150A that is arranged on the vehicle body side, and the light control panel 130 that is provided between the glass sheet 111 and the glass sheet 112 and is supplied with power received by the power receiving coil 120A. Power is supplied wirelessly from the power transmitting coil 150A to the power receiving coil 120A.

[0061] Therefore, it is possible to provide a vehicle window glass 100A and a vehicle window glass system 100 that include a laminated glass 110 that is movable relative to the vehicle body and can receive power wirelessly (radio-wave) from the vehicle body side.

[0062] If power is supplied to a functional member of the side glass that is movable relative to the door 20 via a wired connection using a power cable or the like, there is a risk that the regulator will interfere with the power cable or the like, resulting in damage to the power cable or the like. In contrast, the vehicle window glass 100A and the vehicle window glass system 100 can supply power wirelessly to the dimming panel 130 using the power receiving coil 120A provided in the laminated glass 110. This makes it possible to supply power stably and reliably to the dimming panel 130, which is a functional member provided in the laminated glass 110 that is movable relative to the vehicle body, such as the door 20. This also applies to the case where a functional member other than the dimming panel 130 is provided between the glass plates 111 and 112 of the laminated glass 110.

[0063] Furthermore, the adjustment circuit 121 is mounted on the substrate 120, which is provided on the outdoor surface (the surface on the −Z-axis direction) of the glass plate 111 or the indoor surface (the surface on the +Z-axis direction) of the glass plate 112. Therefore, the adjustment circuit 121 can be mounted on the laminated glass 110 with a simple structure, and the power received by the power receiving coil 120A can be adjusted in a stable and highly reliable manner.

[0064] Furthermore, because the power receiving coil 120A is mounted on the substrate 120, the power receiving coil 120A can be mounted on the laminated glass 110 with a simple structure, and power can be received from the power transmitting coil 150A in a stable and highly reliable manner. Furthermore, because the power receiving coil 120A is mounted on the substrate 120 together with the adjustment circuit 121, the adjustment circuit 121 can be disposed near the power receiving coil 120A, and power can be output from the power receiving coil 120A to the adjustment circuit 121 with little loss. Furthermore, because the power receiving coil 120A is mounted on the substrate 120 together with the adjustment circuit 121, it is possible to miniaturize the circuit system extending from the power receiving coil 120A through the adjustment circuit 121 to the light control panel 130, and it is possible to provide a vehicle window glass 100A and a vehicle window glass system 100 with reduced loss in the circuit system.

[0065] Furthermore, since the power receiving coil 120A is disposed in a position facing the power transmitting coil 150A when the laminated glass 110 is completely closed relative to the vehicle body, strong electromagnetic field coupling can be obtained between the power receiving coil 120A and the power transmitting coil 150A. This allows power to be efficiently transmitted from the power transmitting coil 150A to the power receiving coil 120A when the laminated glass 110 is completely closed relative to the vehicle body. Furthermore, since the power receiving coil 120A is opposed to the power transmitting coil 150A when the laminated glass 110 is completely closed relative to the vehicle body, alignment is easy, strong electromagnetic field coupling can be reliably obtained, and power can be more efficiently transmitted from the power transmitting coil 150A to the power receiving coil 120A. Furthermore, when the laminated glass 110 is completely closed against the vehicle body, the dimming panel 130 appears in a position that is visible from both the outside and inside of the vehicle body. Therefore, when the dimming panel 130 is in a position where it can be used, the strong electromagnetic field coupling between the receiving coil 120A and the transmitting coil 150A allows efficient transmission of power from the transmitting coil 150A to the receiving coil 120A.

[0066] <First Modification> 7 is an enlarged view showing the structure of an FPC 125M according to a first modified example of the embodiment, in which the same components as those in the embodiment are given the same reference numerals and their description will be omitted.

[0067] Fig. 7(A) shows a cross-sectional structure corresponding to Fig. 3(A). In the first modified example, an FPC 125M shown in Fig. 7 is used instead of the FPC 125 of Fig. 3. The power receiving coil 120AM and wirings 126A and 126B are mounted on the FPC 125M, and the power receiving coil 120AM and portions of the wirings 126A and 126B are provided between the glass plates 111 and 112.

[0068] Figure 7(B) shows the FPC125M unfolded and flat. Figure 7(B) also shows an xyz coordinate system, including the x-axis, y-axis, and z-axis directions, written in lowercase. The x-axis, y-axis, and z-axis directions represent directions parallel to the x-axis, y-axis, and z-axis, respectively. The x-axis, y-axis, and z-axis directions are perpendicular to each other.

[0069] 7(B), FPC 125M is divided into three sections L1, L2, and L3 in the y-axis direction. Section L1 is located on the +y-axis side and includes power receiving coil 120AM, section L2 is located in the center in the y-axis direction, and section L3 is located on the -y-axis side. When FPC 125M is bent as shown in FIG. 7(A) with section L1 sandwiched between glass plates 111 and 112, the xyz coordinate system in section L1 coincides with the XYZ coordinate system written in capital letters in FIG. 7(A), and the x-axis in section L3 coincides with the X-axis written in capital letters in FIG. 7(A).

[0070] Section L1 is a section provided between the glass plates 111 and 112, and section L2 is a section bent at the end in the −Y-axis direction of the laminated glass 110 shown in Fig. 7(A). Section L3 is a section that extends in the Y-axis direction on the −Z-axis side of the laminated glass 110 shown in Fig. 7(A) and is connected to the substrate 120.

[0071] As shown in Fig. 7(B), the power receiving coil 120AM has a terminal 120AM1, a wiring portion 120AM2, a connection point 120AM3, a wiring portion 120AM5, a connection portion 120AM7, a wiring portion 120AM8, and a terminal 120AM9, similar to the power receiving coil 120A shown in Fig. 4(A). The connection point 120AM3 and the wiring portion 120AM5, and the wiring portion 120AM5 and the connection portion 120AM7 are connected by two vias similar to the vias 120A4 and 120A6 shown in Fig. 4(B). The overlapping portion of the wiring portion 120AM2 and the wiring portion 120AM5 is insulated by an insulating layer of the FPC 125M similar to the insulating layer 122B shown in Fig. 4(B).

[0072] As shown in FIG. 7B, within section L3, the portion of wiring portion 120AM2 on the terminal 120AM1 side and the portion of wiring portion 120AM8 on the terminal 120AM9 side extend in the −x-axis direction.

[0073] In the first modified example, the substrate 120 is attached to the surface on the -Z axis side of the laminated glass 110, shifted toward the -X axis direction from the position of the substrate 120 shown in Fig. 2. This is to align the positions of the power receiving coil 120AM and the power transmitting coil 150A in a plan view when the laminated glass 110 is completely closed relative to the vehicle body, and to shift the substrate 120 from the power receiving coil 120AM and the power transmitting coil 150A in a plan view. Because the substrate 120 is shifted toward the -X axis direction in this way and is not included in the cross section corresponding to Fig. 3(A), the substrate 120 is shown as an outline without hatching.

[0074] In order to connect the power receiving coil 120AM to the adjustment circuit 121 of the substrate 120, which is positioned offset in the -X-axis direction relative to the power receiving coil 120AM in a plan view, the terminals 120AM1 and 120AM9 are located at the end of the FPC 125M on the -x-axis direction side within section L3. The terminals 120AM1 and 120AM9 are connected to the rectifier circuit 121A (see FIG. 5) of the adjustment circuit 121 located on the -x-axis direction side (-X-axis direction side).

[0075] 7B, the wiring 126A and 126B are provided across sections L1 to L3 and are L-shaped when the FPC 125M is unfolded in a planar state. The wiring 126A has terminals 126A1 and 126A2 located at both ends, and the wiring 126B has terminals 126B1 and 126B2 located at both ends. The terminals 126A1 and 126B1 are located on the negative y-axis side of the terminals 120A1 and 120AM9 of the power receiving coil 120AM, and the terminals 126A2 and 126B2 are located on the positive y-axis side of the spirally wound portion of the wiring section 120AM2 of the power receiving coil 120AM, at the end of the FPC 125M in the positive y-axis direction.

[0076] The terminals 126A1 and 126B1 are connected to the drive circuit 121C (see FIG. 5) of the adjustment circuit 121, and the terminals 126A2 and 126B2 are connected to the dimming panel 130. In the first modified example, the power received by the power receiving coil 120AM is input from the terminals 120A1 and 120AM9 to the rectifier circuit 121A of the adjustment circuit 121, and the PWM pulse signal output from the drive circuit 121C of the adjustment circuit 121 is output to the dimming panel 130 through the wiring 126A and 126B. In this way, the dimming panel 130 can be driven by the power received by the power receiving coil 120AM.

[0077] As described above, according to the first modification, the power receiving coil 120AM is formed on the FPC 125M and provided between the glass sheets 111 and 112. Therefore, by utilizing the power receiving coil 120AM formed on the FPC 125M, it is possible to provide a vehicle window glass and a vehicle window glass system that include a laminated glass 110 that is movable relative to the vehicle body and that can receive power wirelessly from the vehicle body. Because the power receiving coil 120AM is mounted on the FPC 125M, the degree of freedom in the placement of the power receiving coil 120AM increases, making it possible to flexibly accommodate vehicles with various structures.

[0078] <Second Modification> 8 is a diagram showing an example of a vehicle window glass 100AM2 according to a second modified example of the embodiment, and a cross-sectional structure of a door 20 of a vehicle 10 equipped with a vehicle window glass system 100M2. Here, the same components as those in the embodiment are given the same reference numerals, and their description will be omitted. The vehicle window glass system 100M2 according to the second modified example includes the vehicle window glass 100AM2 and a power transmission coil 150A. The vehicle window glass system 100M2 according to the second modified example may include a substrate 150 in addition to the vehicle window glass 100AM2 and the power transmission coil 150A.

[0079] In the vehicle window glass 100AM2 of the second modified example, the substrate 120 on which the power receiving coil 120A and the adjustment circuit 121 are mounted is attached to the interior surface (the surface on the +Z axis direction) of the laminated glass 110. In other words, the substrate 120 is attached to the interior surface (the surface on the +Z axis direction) of the glass plate 112 (see FIG. 3). The other configurations of the vehicle window glass 100AM2 are the same as those of the vehicle window glass 100A of the embodiment.

[0080] Furthermore, the substrate 150 on which the power transmitting coil 150A is mounted is attached to the inner wall portion 22A of the inner panel 22. That is, the power receiving coil 120A and the power transmitting coil 150A are provided on the indoor side of the laminated glass 110.

[0081] 8, when the laminated glass 110 is completely closed relative to the vehicle body, the power receiving coil 120A faces the power transmitting coil 150A. When the laminated glass 110 is completely closed relative to the vehicle body, the position of the power receiving coil 120A in the XY plane is aligned with that of the power transmitting coil 150A. For example, the power receiving coil 120A faces the power transmitting coil 150A with a gap of approximately 10 mm in the Z-axis direction.

[0082] In this manner, even in a configuration in which power receiving coil 120A and power transmitting coil 150A are provided inside the vehicle cabin relative to laminated glass 110, power receiving coil 120A faces power transmitting coil 150A when laminated glass 110 is completely closed relative to the vehicle body.

[0083] Therefore, it is possible to provide a vehicle window glass 100AM2 and a vehicle window glass system 100M2 that include laminated glass 110 that is movable relative to the vehicle body and that can receive power wirelessly from the vehicle body side. Also, because the power receiving coil 120A and the power transmitting coil 150A are provided closer to the interior of the vehicle than the laminated glass 110, it is possible to realize a configuration that makes it easier to protect the power receiving coil 120A and the power transmitting coil 150A from water, dust, and the like that adhere to the laminated glass 110.

[0084] <Third Modification> 9 is a diagram showing an example of a cross-sectional structure of a vehicle window glass 100A according to a third modified example of the embodiment and a door 20 of a vehicle 10 equipped with a vehicle window glass system 100M3. Here, the same components as those in the embodiment are given the same reference numerals, and descriptions thereof will be omitted.

[0085] The vehicle window glass system 100M3 includes a vehicle window glass 100A and a magnetic resonance type power transmission coil 150B. In the third modification, a magnetic resonance type power transmission coil 150B is used instead of the electromagnetic induction type power transmission coil 150A (see FIG. 1). The magnetic resonance type power transmission coil 150B is mounted on the surface on the +Z-axis direction side of the substrate 150. The magnetic resonance type may be, for example, a Qi-standard magnetic resonance type.

[0086] Because the magnetic field resonance type power transmitting coil 150B can transmit power over a longer distance than the electromagnetic induction type power transmitting coil 150A, as an example, the substrate 150 is provided on the inner wall 21A at a position shifted toward the -Y axis direction compared to the substrate 150 of the embodiment (see FIG. 1). Therefore, as shown in FIG. 9, when the laminated glass 110 is completely closed relative to the vehicle body, the power receiving coil 120A does not face the power transmitting coil 150B, but when the laminated glass 110 is opened by Y1 in the -Y axis direction, the power receiving coil 120A faces the power transmitting coil 150B.

[0087] Because the magnetic field resonance type power transmitting coil 150B has a long power transmission distance, the power receiving coil 120A can receive power even when it is at a longer distance from the power transmitting coil 150B. Therefore, the power receiving coil 120A can receive power from the power transmitting coil 150B even when the laminated glass 110 is completely closed against the vehicle body and does not face the power transmitting coil 150B, as shown in FIG. 9 . The power receiving coil 120A can also receive power from the power transmitting coil 150B even when the laminated glass 110 has moved downward by a distance Y1 in the −Y-axis direction from the position shown in FIG. 9 and is now facing the power transmitting coil 150B. The power receiving coil 120A can also receive power from the power transmitting coil 150B even when the laminated glass 110 has moved downward by a distance longer than Y1 in the −Y-axis direction from the position shown in FIG. 9 and is now not facing the power transmitting coil 150B. The power receiving coil 120A may be able to receive power from the power transmitting coil 150B even when the laminated glass 110 is fully opened.

[0088] Therefore, the range in which the power receiving coil 120A can receive power from the power transmitting coil 150B is expanded in the Y-axis direction, and the light control panel 130 can be driven in states where the laminated glass 110 is in various positions in the up-down direction (Y-axis direction). That is, the power receiving coil 120A can receive power from the power transmitting coil 150B not only when the laminated glass 110 is completely closed, but also when the laminated glass 110 is open, and the light control panel 130 can be driven even when the laminated glass 110 is open.

[0089] Therefore, by utilizing the magnetic field resonance type power transmission coil 150B, it is possible to provide a vehicle window glass 100A and a vehicle window glass system 100M3 that include a laminated glass 110 that is movable relative to the vehicle body and can receive power wirelessly from the vehicle body when in various positions relative to the vehicle body.

[0090] Furthermore, in the third modified example, the functional member is the dimming panel 130. However, even when a functional member other than the dimming panel 130 is used, the power receiving coil 120A can receive power from the power transmitting coil 150B not only when the laminated glass 110 is completely closed, but also when the laminated glass 110 is open. Therefore, various functional members can be driven not only when the laminated glass 110 is completely closed, but also when the laminated glass 110 is open.

[0091] <Fourth Modification> Fig. 10 is a diagram showing an example of the planar configuration of a power receiving coil 120A and a power transmitting coil 150AM4 included in a vehicle window glass system according to a fourth modified example of the embodiment. Here, the same components as those in the embodiment are given the same reference numerals, and their description will be omitted. Fig. 10(A) shows the planar structure of the power receiving coil 120A, and Fig. 10(B) shows the planar structure of the power transmitting coil 150AM4. The vehicle window glass system according to the fourth modified example has a configuration in which the power transmitting coil 150A of the vehicle window glass system 100 shown in Fig. 1 is replaced with a power transmitting coil 150AM4.

[0092] As an example, the power receiving coil 120A is mounted on a substrate 120 fixed to the outdoor surface of the laminated glass 110 as shown in Fig. 1, and Fig. 10(A) shows the structure of the power receiving coil 120A as seen in the XY plane. Although Fig. 10(A) shows a simplified view of the power receiving coil 120A, the planar structure of the power receiving coil 120A is the same as the planar structure shown in Fig. 4(A).

[0093] 1, for example, the power transmitting coil 150AM4 shown in Fig. 10(B) is mounted on the substrate 150 and attached to the inner wall portion 21A on the inside of the outer panel 21 of the door 20, but Fig. 10(B) shows the structure of the power receiving coil 120A as viewed in the XY plane. The power transmitting coil 150AM4 is arranged so as to be able to face the power receiving coil 120A with their positions in the X direction aligned, similar to the power transmitting coil 150A shown in Fig. 1, for example.

[0094] The power transmission coil 150AM4 has a plurality of power transmission coil sections 150C corresponding to the power transmission coil 150A shown in FIG. 6. FIG. 6 shows, as an example, a configuration in which the power transmission coil 150AM4 has six power transmission coil sections 150C. The six power transmission coil sections 150C are insulated from one another and arranged overlapping each other in the Y direction. In FIG. 10, the sections in which the six power transmission coil sections 150C arranged from the +Y direction side to the -Y direction side are located are indicated by double-headed arrows 1 to 6, and the second power transmission coil section 150C from the +Y direction side is extracted and shown. The six power transmission coil sections 150C are connected in parallel to the power transmission circuit 50B (see FIG. 5).

[0095] The length Lt of the power transmitting coil 150AM4 in the Y direction is at least ½ to ⅔ of the movable distance in the movable direction (Y direction) of the laminated glass 110 that is movable relative to the door 20. The power transmitting coil 150AM4 has a configuration in which six power transmitting coil units 150C are arranged in the Y direction to achieve such a length in the Y direction.

[0096] Therefore, by using an electromagnetic induction type power transmitting coil 150AM4 that is long in the Y direction, the range in which the power receiving coil 120A can receive power from the power transmitting coil 150AM4 is expanded in the Y-axis direction, as in the third modification, without using a magnetic field resonance type power transmitting coil 150B as in the third modification. Therefore, functional components such as the light control panel 130 can be driven even when the laminated glass 110 is in various positions in the up-down direction (Y-axis direction). Because the length Lt is at least 1 / 2 to 2 / 3 of the movable distance of the laminated glass 110 in the Y direction, the power receiving coil 120A can receive power from the power transmitting coil 150AM4 not only when the laminated glass 110 is completely closed, but also when the laminated glass 110 is opened about 1 / 2 to 2 / 3 of the way for ventilation, for example. This allows functional components such as the light control panel 130 to be driven even when the laminated glass 110 is open.

[0097] Therefore, by using the electromagnetic induction type power transmitting coil 150AM4 that is long in the Y direction, it is possible to provide a vehicle window glass and a vehicle window glass system of the fourth modified example that include a laminated glass 110 that is movable relative to the vehicle body and can receive power wirelessly from the vehicle body side in various positions relative to the vehicle body. Note that the power transmitting coil 150A (see FIG. 8) of the second modified example may be replaced with the power transmitting coil 150AM4.

[0098] <Fifth Modification> FIG. 11 is a diagram showing an example of the planar configuration of a power receiving coil 120A and a power transmitting coil 150AM5 included in a vehicle window glass system according to a fifth modified example of the embodiment. Here, the same components as those in the embodiment are given the same reference numerals, and their description will be omitted. FIG. 11(A) shows the planar structure of the power receiving coil 120A. The power receiving coil 120A is the same as the power receiving coil 120A shown in FIG. 10(A). FIG. 11(B) shows the planar structure of the power transmitting coil 150AM5. In the fifth modified example, the power transmitting coil 150AM5 will be described. The vehicle window glass system according to the fifth modified example has a configuration in which the power transmitting coil 150A of the vehicle window glass system 100 shown in FIG. 1 is replaced with a power transmitting coil 150AM5.

[0099] The power transmitting coil 150AM5 has a configuration in which the power transmitting coil 150A shown in Fig. 6 is elongated in the Y direction. The length Lt of the power transmitting coil 150AM5 in the Y direction is at least 1 / 2 to 2 / 3 of the movable distance in the movable direction (Y direction) of the laminated glass 110 that is movable relative to the door 20, and is equal to the length Lt of the power transmitting coil 150AM4 in the Y direction of the fourth modified example, for example.

[0100] Therefore, by using an electromagnetic induction type power transmitting coil 150AM5 that is long in the Y direction, the range in which the power receiving coil 120A can receive power from the power transmitting coil 150AM5 is expanded in the Y-axis direction, as in the third modification, without using a magnetic field resonance type power transmitting coil 150B as in the third modification. Therefore, functional components such as the light control panel 130 can be driven even when the laminated glass 110 is in various positions in the up-down direction (Y-axis direction). Because the length Lt is at least 1 / 2 to 2 / 3 of the movable distance of the laminated glass 110 in the Y direction, the power receiving coil 120A can receive power from the power transmitting coil 150AM5 not only when the laminated glass 110 is completely closed, but also when the laminated glass 110 is opened about 1 / 2 to 2 / 3 of the way for ventilation, for example. This allows functional components such as the light control panel 130 to be driven even when the laminated glass 110 is open.

[0101] Therefore, by utilizing an electromagnetic induction type power transmission coil 150AM5 that is long in the Y direction, a fifth variant vehicle window glass and vehicle window glass system can be provided that includes a laminated glass 110 that is movable relative to the vehicle body and can receive power wirelessly from the vehicle body while in various positions relative to the vehicle body.

[0102] Although exemplary embodiments of the vehicle window glass and vehicle window glass system of the present disclosure have been described above, the present disclosure is not limited to the specifically disclosed embodiments, and various modifications and variations are possible without departing from the scope of the claims.

[0103] This international application claims priority to Japanese Patent Application No. 2021-142143, filed on September 1, 2021, the entire contents of which are incorporated herein by reference.

[0104] The following additional notes are provided regarding the above-described embodiments. (Appendix 1) a laminated glass movable with respect to the vehicle body, the laminated glass comprising a first glass plate provided on an exterior side of the vehicle body, a second glass plate provided on an interior side of the vehicle body, and an interlayer film provided between the first glass plate and the second glass plate; a power receiving coil provided on the first glass plate or the second glass plate, or provided between the first glass plate and the second glass plate, and configured to receive power from a power transmitting coil disposed on the vehicle body side; a functional member provided between the first glass plate and the second glass plate, the functional member being supplied with the power received by the power receiving coil; Vehicle window glass, including (Appendix 2) The power receiving device further includes a substrate on which an adjustment circuit is mounted, the adjustment circuit adjusting the power received by the power receiving coil and supplying the power to the functional member; Attachment 1: The vehicle window glass according to claim 1, wherein the substrate is provided on an exterior surface of the first glass plate or an interior surface of the second glass plate. (Appendix 3) 3. The vehicle window glass according to claim 2, wherein the power receiving coil is mounted on the substrate. (Appendix 4) 3. The vehicle window glass according to claim 1, wherein the power receiving coil is formed on a flexible substrate and is provided between the first glass plate and the second glass plate. (Appendix 5) 5. The vehicle window glass according to claim 1, wherein the power receiving coil is disposed in a position facing the power transmitting coil when the laminated glass is completely closed relative to the vehicle body. (Appendix 6) a laminated glass movable with respect to the vehicle body, the laminated glass comprising a first glass plate provided on an exterior side of the vehicle body, a second glass plate provided on an interior side of the vehicle body, and an interlayer film provided between the first glass plate and the second glass plate; a power transmission coil disposed on the vehicle body side; a power receiving coil provided on the first glass plate or the second glass plate, or provided between the first glass plate and the second glass plate, and configured to receive power from the power transmitting coil; a functional member provided between the first glass plate and the second glass plate, the functional member being supplied with the power received by the power receiving coil; A vehicle glazing system comprising: (Appendix 7) 7. The vehicle window glass system according to claim 6, wherein the power receiving coil and the power transmitting coil are arranged in positions facing each other when the laminated glass is completely closed relative to the vehicle body. (Appendix 8) 8. The vehicle window glass system according to claim 6, wherein the power transmission coil is a magnetic field resonance type coil. (Appendix 9) 8. The vehicle window glass system according to claim 6, wherein the power transmission coil has a length equal to or greater than half of the movable distance of the laminated glass in the movable direction. [Explanation of symbols]

[0105] 10 vehicles 20 Doors (Example of a vehicle body) 50A power supply 50B Power Transmission Circuit 100, 100M2, 100M3 Vehicle Window Glass System 100A, 100AM2 Vehicle window glass 110 Laminated Glass 111 Glass plate (example of the first glass plate) 112 Glass plate (example of second glass plate) 113 Interlayer 120 boards 120A, 120AM receiving coil 121 Adjustment circuit 125 FPC (an example of a flexible printed circuit board) 130 Dimming panel (an example of a functional component) 150 boards 150A, 150AM4, 150AM5 power transmission coil 150B power transmission coil (an example of a magnetic resonance coil) 150C power transmission coil

Claims

1. a laminated glass movable with respect to the vehicle body, the laminated glass including a first glass plate provided on an exterior side of the vehicle body, a second glass plate provided on an interior side of the vehicle body, and an interlayer film provided between the first glass plate and the second glass plate; a power receiving coil provided between the first glass plate and the second glass plate and configured to receive power from a power transmitting coil disposed on the vehicle body side; a functional member provided between the first glass plate and the second glass plate, the functional member being supplied with the power received by the power receiving coil; Including, The vehicle window glass, wherein the power receiving coil is formed on a flexible substrate and is provided between the first glass plate and the second glass plate.

2. The vehicle window glass according to claim 1 , wherein the power receiving coil is provided at a position facing the power transmitting coil when the laminated glass is completely closed relative to the vehicle body.

3. a laminated glass movable with respect to the vehicle body, the laminated glass including a first glass plate provided on an exterior side of the vehicle body, a second glass plate provided on an interior side of the vehicle body, and an interlayer film provided between the first glass plate and the second glass plate; a power transmission coil disposed on the vehicle body side; a power receiving coil provided between the first glass plate and the second glass plate and configured to receive power from the power transmitting coil; a functional member provided between the first glass plate and the second glass plate, the functional member being supplied with the power received by the power receiving coil; Including, The vehicle window glass system, wherein the receiving coil is formed on a flexible substrate and is provided between the first glass plate and the second glass plate.

4. The vehicle window glass system according to claim 3 , wherein the power receiving coil and the power transmitting coil are arranged at positions facing each other with respect to the vehicle body when the laminated glass is completely closed.

5. 5. The vehicle window glass system according to claim 3, wherein the power transmission coil is a magnetic field resonance type coil.

6. 5. The vehicle window glass system according to claim 3, wherein the power transmission coil has a length equal to or greater than half of a movable distance of the laminated glass in a movable direction.

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