WO2018123919A1

WO2018123919A1 - Window-glass with antenna, vehicle window-glass with antenna, and vehicle

Info

Publication number: WO2018123919A1
Application number: PCT/JP2017/046282
Authority: WO
Inventors: 加賀谷　修
Original assignee: 旭硝子株式会社
Priority date: 2016-12-28
Filing date: 2017-12-25
Publication date: 2018-07-05
Also published as: JPWO2018123919A1; JP6935804B2

Abstract

Vehicle window-glass (10) with an antenna (window-glass with an antenna) is provided with: vehicle window-glass (window glass) (1) comprising a first surface (1A), a second surface (1B) opposite the first surface (1A), and a side surface (7a) connecting the first surface (1A) and second surface (1B); an antenna (3) that is mounted onto a mounting surface, which is either the first surface (1A) or the second surface (1B); and a metal member (11) mounted onto the side surface (7a). A first distance (A) that defines one direction from the antenna (3) toward the side surface (7a) and runs along one direction from the antenna (3) to one end of the vehicle windowpane (1) or one end of the metal member (11) is different from a second distance (B) from an imaginary antenna (3a) to one end of the vehicle window-glass (1) or one end of the metal member (11), the imaginary antenna being obtained by projecting the antenna (3) in the thickness direction of the vehicle window-glass (1) onto an opposite surface on the reverse side from the mounting surface.

Description

Window glass with antenna, window glass for vehicle with antenna, and vehicle

The present invention relates to a window glass with an antenna, a vehicle window glass with an antenna, and a vehicle.

It is common for vehicles to receive various broadcast waves, such as radio waves from terrestrial digital broadcasts, various radio broadcasts, ITS (Intelligent Transport System), and the like. In such a situation, the role of an antenna that receives radio waves is important. In recent years, vehicle-mounted window glass with an antenna that effectively acquires radio wave information by integrating an antenna and a window glass for a vehicle with peripheral electronic components is becoming widespread. Such an antenna is more maintainable and durable than a general pole antenna, and can be reduced in weight. In addition, by integrating the antenna and the window glass for the vehicle, the protrusions are eliminated, and the design of the vehicle is not impaired. Therefore, the adoption is expanding as a means for realizing information communication.

As described above, the vehicle window glass with an antenna has an excellent point, but the directivity of the antenna is affected by the surrounding metal vehicle body, and depending on the type of vehicle, the directivity can be freely set. There is a problem that it becomes difficult. In addition, such a subject exists similarly in the window glass with antennas, such as a building whose attachment object is not a vehicle.

Paying attention to the problems as described above, Patent Document 1 discloses a strong directivity in one direction without being affected by the metal part of the vehicle body, even if the glass antenna is installed near the metal part of the vehicle body. A broadband automotive high-frequency glass antenna is disclosed. In a glass antenna that is provided on the surface of a window glass of an automobile and transmits / receives radio waves in a high frequency band, an antenna line that is provided near a metal part of the vehicle body and is fed from one end close to the metal part of the vehicle body, and the antenna line The antenna wire is provided with a plurality of parallel conductor wires extending in parallel and one end of each of the parallel conductor wires. A coupling conductor wire to be coupled is provided.

Japanese Unexamined Patent Publication No. 2007-110390

The technology disclosed in Patent Document 1 adjusts the frequency characteristics of directivity and reception sensitivity using a parasitic wire, even in the case where an antenna is provided near a metal part of a vehicle body, and can also be used in a horizontal direction or a desired elevation angle direction. The aim is to obtain a high-frequency glass antenna for automobiles with directivity.

However, according to the configuration of Patent Document 1, it is necessary to mount an additional member such as a parasitic wire on the glass, which may cause problems in terms of design freedom, manufacturing cost, aesthetics, and the like. In addition, since the power feeding element has frequency dependence, it is necessary to review the design according to the frequency of the radio wave received by the antenna, and it is expected that it takes time to design.

The present invention provides a window glass with an antenna having excellent directivity, a vehicle window glass with an antenna using the window glass with an antenna, and a vehicle by a simple method.

The window glass with an antenna of the present invention has a first surface, a second surface facing the first surface, and a side surface connecting the first surface and the second surface, and the first glass. An antenna attached to an attachment surface that is either a surface or the second surface; and a conductive member attached to the side surface, wherein a direction from the antenna toward the side surface is defined, and the antenna The first distance along the one direction from one end of the window glass to one end of the conductive member is the thickness of the window glass with respect to the opposing surface opposite to the mounting surface. It differs from the second distance from the virtual antenna obtained by projecting in the direction to one end of the window glass or one end of the conductive member.

In the window glass with an antenna according to one embodiment of the present invention, at least a part of the edge portion has an inclined surface, and the conductive member is provided on the inclined surface.

In the window glass with an antenna according to one aspect of the present invention, the conductive member is provided across the first surface, the side surface, and the second surface, and the attachment surface and the The length that the conductive member opposes is shorter than the length that the opposing surface and the conductive member oppose with respect to the side surface.

The vehicle window glass with an antenna of the present invention is composed of the above-mentioned window glass with an antenna, wherein the window glass is a vehicle window glass.

The vehicle window glass with an antenna according to one aspect of the present invention includes: a first glass plate; and a second glass plate on which the first glass plate and an intermediate film are bonded to each other. Is provided.

In the vehicle window glass with an antenna according to one aspect of the present invention, the side surfaces of the second glass plate and the intermediate film are more in the plan view than the side surfaces of the first glass plate. By being located in the inner region, a stepped surface formed in a step shape is formed at the edge, and the conductive member is provided on at least a part of the stepped surface.

In the vehicle window glass with an antenna according to an aspect of the present invention, the first surface is the facing surface and is a vehicle outer surface, and the second surface is the mounting surface and the vehicle inner surface. .

The vehicle of the present invention includes a vehicle window glass and a vehicle body, the vehicle window glass forms the vehicle window glass with an antenna described above, and the conductive member includes a part of the vehicle body. Constitute.

According to the present invention, it is possible to provide a window glass with an antenna having excellent directivity by a simple method of processing the edge of the window glass.

1A and 1B are perspective views of a vehicle window glass with an antenna (window glass with an antenna), in which FIG. 1A is a perspective view in a state where nothing is arranged around, and FIG. 1B is a metal frame arranged around the window glass. The perspective view in the state which is not done is shown. 2A and 2B show a vehicle window glass with an antenna according to the present embodiment, wherein FIG. 2A is a perspective view, FIG. 2B is a cross-sectional view, and FIG. 2C is a cross-sectional view showing a positional relationship between a side surface and an antenna. FIG. 3 is a chart showing the gain of the antenna. FIG. 3A is a chart of the example of FIG. 2B, and FIG. 3B is a chart of the embodiment of FIG. 4 (a) to 4 (f) are cross-sectional views showing modifications of the edge portion of the vehicle window glass with an antenna provided with one vehicle window glass (window glass). 5 (a) to 5 (f) are sectional views of modifications of the edge of the vehicle window glass with an antenna provided with the vehicle window glass made of laminated glass. 6 (a) to 6 (d) show the first distance and the second distance in the vehicle window glass with an antenna shown in FIGS. 4 (c), 4 (d), 4 (f), and 5 (e). Sectional drawing which showed the distance of is shown.

Hereinafter, embodiments for carrying out the present invention will be described with reference to the drawings. Note that in the drawings for explaining the embodiments, unless there is a particular description of the direction, the direction on the drawing is referred to, and the reference direction in each drawing corresponds to the direction of a symbol or number. Further, the directions such as parallel and right angles allow a deviation that does not impair the effects of the present invention. Moreover, as a window glass for vehicles which can apply this invention, the windshield attached to the front part of a vehicle is mentioned, for example. The vehicle window glass may be a rear glass attached to the rear portion of the vehicle, a side glass attached to the side portion of the vehicle, a roof glass attached to the ceiling portion of the vehicle, or the like.

FIG. 1 shows a general vehicle window glass with an antenna, and FIG. 1 (a) shows a perspective view of only the vehicle window glass with an antenna (window glass with an antenna) 10, and nothing is particularly arranged around the window glass. The perspective view in the state which does not exist is shown. The vehicle window glass has a U-shaped end shape, that is, a side surface shape parallel to the thickness direction of the vehicle window glass. The vehicle window glass 10 with an antenna is configured by arranging an antenna 3 on a vehicle window glass (window glass) 1. In addition, this example shows the vehicle window glass 10 with an antenna typically, and does not show the thing of the shape actually used.

In actual use, the vehicle window glass 10 with an antenna is attached to a metal vehicle body of the vehicle. FIG. 1 (b) assumes such an actual use situation, and a metal frame 5 made of metal is provided around the vehicle window glass 10 with an antenna having the vehicle window glass having the same shape as FIG. 1 (a). The perspective view of the state arrange | positioned is shown. The vehicle body is not limited to a metal member, and may be a conductive member such as a conductive resin or a resin having a conductive material formed on the surface thereof.

High frequency power is supplied to the antenna 3 from a feeding point (not shown), and radio waves radiated from the antenna 3 propagate toward the edge of the vehicle window glass 1 as surface waves and enter the edge (incident wave). ). Here, it is known that the reflected wave reflected at the edge overlaps with the incident wave from the antenna 3 to become a standing wave, thereby reducing the gain of the antenna. In addition, the radio wave component that leaks from the edge to the outside of the glass is re-radiated by a metal casing such as a car body at the edge, so that the antenna gain is reduced by the interference with the antenna 3 or the directivity shape is greatly changed. May cause harmful effects such as

In Patent Document 1, a parasitic line is arranged in the vicinity of a feeder line (antenna line) and functions to adjust directivity and frequency characteristics of reception sensitivity. As a result, strong directivity is realized in the front direction of the vehicle.

However, the method of Patent Document 1 has a problem from the viewpoint of the degree of freedom in design because it is necessary to mount an additional member such as a parasitic wire on the glass. In addition, since the power feeding element has frequency dependence, it is necessary to review the design according to the frequency of the radio wave received by the antenna, and it is expected that it takes time to design.

The inventor examined the above problems, and found that the above problems could be easily solved by a simple method, in particular, applying predetermined processing to the edge of the vehicle window glass.

FIG. 2 shows a vehicle window glass 10 with an antenna according to an embodiment of the present invention. As shown in FIG. 2 (a), in the vehicle window glass 10 with an antenna according to the embodiment, the edge (region of a predetermined distance D from the periphery) 7 of the vehicle window glass 1 is cut obliquely, and the vehicle window A side surface of the glass 1 defines a tapered surface 7a. As shown in FIG. 2B, a metal member (conductive member) 11 having a triangular cross section is disposed on the tapered surface 7a via an adhesive.

The window glass 1 for vehicles has the 1st surface 1A which is one main surface, and the 2nd surface 1B which is the other main surface which opposes this 1st surface 1A, At the time of attachment to a vehicle, The first surface 1A is attached to the outside of the vehicle, and the second surface 1B is attached to the inside (indoor side) of the vehicle. The antenna 3 is provided on the second surface 1B. In this example, the second surface 1B is a mounting surface of the antenna 3. The second and tapered surfaces 7a are formed so as to be inclined outward in the plan view of the vehicle window glass 1 in the direction from the second surface 1B of the vehicle window glass 1 to the first surface 1A.

In such a configuration, as shown in FIG. 2B, the radio wave from the antenna 3 that propagates through the inside of the vehicle window glass 1 as the surface wave E1 and travels toward the edge 7 enters the tapered surface 7a. At the same time, the light is reflected by the taper surface 7a and the metal member 11 provided on the taper surface 7a.

The tapered surface 7a is formed to be inclined outward in the direction from the second surface 1B to the first surface 1A. Accordingly, the reflected radio wave is reflected from the second surface 1B toward the first surface 1A. Then, the reflected radio wave is radiated to the outside of the vehicle window glass 1 as a radiated wave E2. Since this radiated wave E2 is radiated | emitted from the 1st surface 1A of the window glass 1 for vehicles toward the outer side of a vehicle in the direction close | similar to the perpendicular direction from the 1st surface 1A, it has preferable directivity.

FIG. 2 (c) is a cross-sectional view showing the structure of the vehicle window glass 1 having such an action, particularly the positional relationship between the side surface 7a (tapered surface 7a in this example) and the antenna 3 at the edge. In the present embodiment, an arbitrary direction from the antenna 3 toward the side surface 7a is defined. Here, the first distance A is obtained based on the distance along the one direction from the antenna 3 to one end of the vehicle window glass 1 or one end of the metal member 11.

Further, by projecting the antenna 3 in the thickness direction of the window glass 1 for a vehicle, a virtual antenna is formed on the opposite surface (first surface 1A in this example) opposite to the mounting surface (second surface 1B in this example). 3a is obtained. Here, the second distance B is obtained based on the distance along the one direction from the virtual antenna 3 a to one end of the vehicle window glass 1 or one end of the metal member 11. That is, in the present embodiment, the one direction is a direction along a line of the first distance A and the second distance B on the drawing.

In the vehicle window glass 1 of the vehicle window glass 10 with an antenna of the present invention, the first distance A and the second distance B described above are different (A ≠ B). As a result, a preferable radiated wave E2 radiated toward the outside of the vehicle can be obtained. In particular, in the present embodiment, the second distance B is larger than the first distance A (A <B).

That is, the metal member 11 of this embodiment, and further, the side surface (tapered surface) 7 a has an action of propagating radio waves transmitted from the antenna 3 to the one main surface side of the vehicle window glass 1.

3 (a) and 3 (b) are charts showing the simulation results of directivity in the elevation angle direction (in-plane direction in the drawing) when the antenna 3 is viewed from the side. For the simulation, an FDTD (Finite-difference 法 time-domain) method was used. A solid line indicates a sample chart in which the antenna 3 is provided directly (without a gap) on the vehicle window glass 1 by a technique such as printing, and a broken line indicates a predetermined interval (here, 5 mm) on the vehicle window glass 1. Shows a chart of a sample provided with the antenna 3. The unit of gain is dB. The input voltage to the antenna 3 is set to 1 V, and the directivity frequency is set to 5.8 GHz.

FIG. 3 (a) shows a chart of the vehicle window glass 10 with an antenna shown in FIG. 1 (b). As is clear from this figure, it is understood that the directivity is disturbed in both the solid line and the broken line, and good directivity is not obtained.

On the other hand, FIG. 3B shows a chart of the vehicle window glass 10 with an antenna according to the embodiment of FIG. As is clear from this figure, both the solid line and the broken line have little disturbance in the directivity of the gain, and particularly have a strong directivity in the lower direction of the chart. As shown in FIG. 2B, it can be understood that good antenna characteristics can be obtained by attaching the vehicle window glass 10 with an antenna to the vehicle so that the lower side direction of the chart is the outer side direction of the vehicle. .

A method for manufacturing the window glass 1 for a vehicle includes a float method and a fusion method, but is not particularly limited. An example of the composition of the glass plate used in the vehicle window glass 1 is a composition expressed in mol% based on oxide, 50 to 80% of SiO ₂ , 0 to 10% of B ₂ O ₃ , Al ₂ O ₃ 0.1-25%, Li ₂ O + Na ₂ O + K ₂ O 3-30%, MgO 0-25%, CaO 0-25%, SrO 0-5%, BaO 0-0 A glass containing 5%, 0 to 5% ZrO ₂ and 0 to 5% SnO ₂ may be mentioned, but is not particularly limited. The glass plate may be an acrylic plate or polycarbonate plate that is organic glass.

The antenna 3 of the present embodiment is a metal linear antenna, but the size, shape, type, and the like of the antenna to be attached are not particularly limited, and the arrangement position in the vehicle window glass 1 is not particularly limited.

The method for attaching the antenna 3 to the vehicle window glass 1 is not particularly limited. For example, the antenna 3 can be directly formed on the vehicle window glass 1 by performing metal printing, sputtering, or the like on the vehicle window glass 1. Moreover, you may comprise by attaching the metal member as the antenna 3 to the window glass 1 for vehicles with an adhesive agent.

4 (a) to 4 (f) are vehicle window glasses 10 with an antenna including a vehicle window glass 1 made of a single glass plate, and are cross-sectional views of various modified examples of the edges thereof. Show. In each example, it is attached to the vehicle so that the upper surface side faces the inside of the vehicle and the lower surface side faces the outside of the vehicle.

FIG. 4 (a) is the same example as FIG. 2 (b). FIG. 4B shows an example in which the resin member 13 is provided on the outer side of the metal member 11 in FIG. 4A, and the attachment to the vehicle body is improved. FIG. 4C shows an example in which a thin film-like metal member 11 is provided on the tapered surface 7a, unlike the block-like metal member 11 shown in FIG.

In the example described above, the tapered surface 7a is formed so as to reach the first surface 1A from the second surface 1B of the vehicle window glass 1. 4D and 4E, the tapered surface 7a is not formed so as to reach the first surface 1A, but is formed partway along the side surface 1C connecting the second surface 1B and the first surface 1A. An example is shown. The metal member 11 in FIG. 4D is in the form of a film, but the metal member 11 in FIG. 4E has a triangular shape similar to that in FIG.

In the example of FIG. 4 (f), the tapered surface 7 a is not formed on the vehicle window glass 1. Instead, the metal member 11 is provided along the edge 7 across the first surface 1 </ b> A, the side surface 1 </ b> C, and the second surface 1 </ b> B of the vehicle window glass 1 at the edge 7. Further, the length L2 at which the mounting surface (first surface 1A) of the antenna 3 and the metal member 11 face each other with respect to the side surface 1C is opposed to the facing surface (second surface 1B) and the metal member 11 with respect to the side surface 1C. It is longer than the length L1 (L1> L2). As a result, as shown in FIG. 4F, a pseudo taper surface 7a is formed on the edge portion 7, and the same effect as the above-described example can be obtained.

FIGS. 5 (a) to 5 (f) are different from FIGS. 4 (a) to 4 (f) in the vehicle window glass 10 with an antenna including the vehicle window glass 1 made of laminated glass. Sectional drawing of the various modifications of the edge part is shown. In this example, the laminated glass which comprises the window glass 1 for vehicles is interposed between the 1st glass plate 1a, the 2nd glass plate 1c, and the 1st glass plate 1a and the 2nd glass plate 1c. Intermediate film 1b. That is, the 2nd glass plate 1c is bonded together via the 1st glass plate 1a and the intermediate film 1b. The first glass plate 1a is the vehicle exterior side, and the second glass plate 1c is the vehicle interior side.

The composition of the intermediate film 1b may be that generally used for conventional laminated glass for vehicles, and for example, polyvinyl butyral (PVB), ethylene vinyl acetal (EVA), or the like can be used. Moreover, you may use the thermosetting resin which is a liquid before a heating. That is, the intermediate film 1b may be in the form of a layer when it is in a laminated glass state, and the intermediate film 23 may be in a liquid state before the first glass plate 1a and the second glass plate 1c are joined.

FIG. 5 shows sectional views of various modified examples of the edge portion of the vehicle window glass 1 which is a laminated glass.
FIG. 5A shows an example in which a tapered surface 7 a is formed on the edge portion 7 in the same manner as in FIGS. FIG. 5 (b) shows a step formed in a step shape that spreads from the second surface 1B toward the first surface 1A at the edge 7 by utilizing the property of laminated glass that is a laminate of a plurality of layers. A shaped surface 7b is formed. That is, the side surfaces of the second glass plate 1c and the intermediate film 1b are located in the inner region of the vehicle window glass 1 in a plan view than the side surfaces of the first glass plate 1a. And the step-shaped metal member 11 is formed in the side surface of the 1st glass plate 1a, the intermediate film 1b, and the 2nd glass plate 1c. Furthermore, the metal member 11 is also formed on the exposed main surface 1a1 of the first glass plate 1a.

In the example of FIG. 5B, although not a tapered surface, the stepped metal member 11 is provided on the stepped surface 7b formed in a stepped shape so as to expand from the second surface 1B toward the first surface 1A. It has been. As a result, the metal member 11 and the stepped surface 7b have an effect of propagating radio waves transmitted from the antenna 3 to the first surface 1A side of the vehicle window glass 1.

FIG. 5 (c) shows an example in which the resin member 13 is further provided to increase the strength with respect to the example of FIG. 5 (b). FIG. 5 (d) shows an example in which the combined body of the metal member 11 and the resin member 13 is formed first and then attached to the edge of the vehicle window glass 1 later.

FIG. 5E shows an example in which the metal member 11 is formed only on the side surface of the second glass plate 1c, and FIG. 5F shows the side surface of the second glass plate 1c and the intermediate film 1b in which the metal member 11 is formed. An example formed only in FIG. Even with such a simple structure, the metal member 11 and the stepped surface 7b have the effect of propagating radio waves transmitted from the antenna 3 toward the first surface 1A of the vehicle window glass 1. That is, the metal member 11 has an action of propagating radio waves transmitted from the antenna 3 to the first surface 1A side of the vehicle window glass 1 by being provided on at least a part of the stepped surface 7b. .

6 (a) to 6 (d) show the first distance A in the vehicle window glass 10 with an antenna shown in FIGS. 4 (c), 4 (d), 4 (f), and 5 (e), respectively. 4 is a cross-sectional view showing a second distance B. FIG. In each example, the first distance A and the second distance B are obtained as shown in the figure. In FIGS. 6A to 6D, the first distance A is obtained based on the distance from the antenna 3 to one end of the metal member 11. In FIGS. 6A and 6C, the second distance B is obtained based on the distance from the antenna 3 to one end of the metal member 11. 6B and 6D, the second distance B is obtained based on the distance from the antenna 3 to one end of the vehicle window glass 1. As described above, the start point of the first distance A and the second distance B is the antenna 3, but the end point is one end of the metal member 11 when the metal member 11 is present at the edge of the vehicle window glass 1. When the metal member 11 does not exist, it becomes one end of the vehicle window glass 1.

A first distance A and a second distance B are determined along any one direction from the antenna 3 toward the side surface 7a. In the above-described embodiment, the one direction is defined by a direction parallel to the side of the vehicle window glass 1, but the method of defining the one direction is not particularly limited. If the first distance A and the second distance B can be correctly evaluated, the direction is not necessarily limited to the direction parallel to the side of the vehicle window glass 1.

In the above-described embodiment, the first surface 1A is an opposing surface and is an outer surface of the vehicle, and the second surface 1B is an attachment surface and an inner surface of the vehicle. Thus, it is preferable to install the vehicle-mounted window glass 10 with an antenna in the vehicle so that the antenna 3 is provided inside the vehicle (the mounting surface is on the inside of the vehicle). Of course, this is not essential, and the antenna 3 may be provided outside the vehicle (the mounting surface is on the inside of the vehicle). The antenna 3 may be provided in the thickness direction of the vehicle window glass 1, that is, the antenna 3 may be embedded in the vehicle window glass 1. In the example of FIG. 6 (d), the antenna 3 is embedded in the surface of the second glass plate 1c, but the first glass plate 1a or the second glass plate so that the antenna 3 is in contact with the intermediate film 1b. It may be embedded in 1c.

Further, when it is assumed that the vehicle window glass 1 is installed on the vehicle body, the metal member (conductive member) 11 is considered to correspond to a member constituting a part of the vehicle body. The present invention includes a vehicle including the vehicle window glass 10 with an antenna. In the above-described embodiment, the conductive member is the metal member 11. However, the conductive member may be a member having a predetermined conductivity, and is not necessarily a metal.

It should be noted that the edge processing as described above (formation of a tapered surface or stepped surface and arrangement of the conductive member) may be performed on at least a part of the edge of the vehicle window glass 1. Moreover, a taper surface can also be grasped | ascertained as a simple inclined surface, and can also be grasped | ascertained that a side surface comprises an inclined surface. The inclination here may be not only a linear shape such as a straight line or a curved line but also a stepped shape. Further, the side surface on which the inclined surface is provided may be at least one side surface (edge portion) of the vehicle window glass 1, that is, one of the left and right (or upper and lower) side surfaces (edge portion) has the inclined surface. Just do it. Of course, you may provide an inclined surface over the perimeter (all edge part) of the window glass 1 for vehicles. Further, by processing the edge of the side closest to the antenna 3, the targeted effect can be easily obtained.

In the above-described embodiment, the vehicle window glass and the vehicle window glass with an antenna have been described. However, the object to which the present invention is applied may be a window glass (for example, an architectural window glass) and a window glass with an antenna (for example, an architectural window glass with an antenna) whose building is not a vehicle. . This is because setting the appropriate antenna directivity is an important issue even for this type of window glass.

Note that the present invention is not limited to the above-described embodiment, and modifications, improvements, and the like can be made as appropriate. In addition, the material, shape, dimension, numerical value, form, number, arrangement location, and the like of each component in the above-described embodiment are arbitrary and are not limited as long as the present invention can be achieved.

This application claims priority based on Japanese Patent Application No. 2016-256750 filed with the Japan Patent Office on December 28, 2016, and the entire contents of Japanese Patent Application No. 2016-256750 are incorporated herein by reference. .

The present invention makes it possible to provide a window glass with an antenna having excellent directivity by a simple method of processing an edge of a window glass, and does not impair the design of vehicles, buildings, etc. Various broadcast waves can be received.

1 Vehicle window glass (window glass)
3 Antenna 7 Edge 7a Side surface (tapered surface; inclined surface)
10 Vehicle window glass with antenna (window glass with antenna)
11 Metal member (conductive member)

Claims

A window glass having a first surface that is a main surface, a second surface that is another main surface facing the first surface, and a side surface that connects the first surface and the second surface;
An antenna attached to an attachment surface that is either the first surface or the second surface;
A conductive member attached to the side surface;
With
Define one direction from the antenna to the side,
The first distance along the one direction from the antenna to one end of the window glass or one end of the conductive member is:
A second distance from the virtual antenna obtained by projecting the antenna in the thickness direction of the window glass to one end of the window glass or one end of the conductive member with respect to the opposite surface opposite to the mounting surface Different from the window glass with antenna.
The window glass with an antenna according to claim 1, wherein at least a part of the side surface has an inclined surface, and the conductive member is provided on the inclined surface.
The conductive member is provided across the first surface, the side surface, and the second surface;
The window with an antenna according to claim 1, wherein a length of the mounting surface and the conductive member facing each other with respect to the side surface is longer than a length of the facing surface and the conductive member facing each other with the side surface as a reference. Glass.
The vehicle window glass with an antenna configured by the window glass with an antenna according to any one of claims 1 to 3, wherein the window glass is a window glass for a vehicle.
The vehicle window glass with an antenna according to claim 4, wherein the vehicle window glass includes a first glass plate and a second glass plate bonded to the first glass plate via an intermediate film. .
The side surface of the second glass plate and the intermediate film is located in an inner region of the vehicle window glass in a plan view than the side surface of the first glass plate, thereby forming a stepped shape. A surface is formed,
The vehicle window glass with an antenna according to claim 5, wherein the conductive member is provided on at least a part of the stepped surface.
The antenna according to any one of claims 4 to 6, wherein the first surface is the facing surface and is a surface outside the vehicle, and the second surface is the mounting surface and is a surface inside the vehicle. With window glass for vehicles.
A vehicle window glass and a vehicle body,
The vehicle window glass forms the vehicle window glass with an antenna according to any one of claims 4 to 7,
The conductive member constitutes a part of the vehicle body.