JP4696827B2 - Resin plate-like body for vehicle window and manufacturing method thereof - Google Patents

Description

  The present invention relates to a resin plate-like body for a vehicle window and a method for manufacturing the same.

  Conventionally, an inorganic glass plate has been used in most cases for a plate-like body that closes a window portion of a general vehicle. In addition, such inorganic glass plates often have a curved shape. However, it is very difficult to manufacture an inorganic glass plate having a complicated curved shape. For this reason, it has been studied to use a resin plate-like body that has a free shape, is lightweight, and has high strength as an alternative to the inorganic glass plate.

  Since the surface hardness (scratch resistance) of such resinous plate-like bodies for vehicle windows does not reach that of plate-like bodies made of inorganic materials for vehicle windows such as glass, it is usually necessary to apply a hard coat for surface protection. It is. Then, the technique which affixes the resin film which has surface protection layers, such as an acrylic and silicone, on the outer surface of these resin-made plate-like bodies for vehicle windows, and gives surface hardness is known (for example, patent document 1). reference).

  For example, some rear windows and side windows of vehicles, particularly automobiles, are provided with antenna conductors for receiving radio waves such as radios and televisions printed on the inner surface of the vehicle window plate. . Further, in recent years, with the development of IT technology, expectations as a means for receiving signal radio waves used in various ITS devices are also increasing. For this reason, the antenna conductor of the vehicle window plate is expected to have good radio wave reception performance with respect to various radio waves.

  FIG. 9 shows a configuration example of a vehicle window plate having a conventional antenna conductor. The figure shows an example in which the plate-like body 60 is used as a fixed window. A concealing coating body 53 such as a colored ceramic paste is disposed on the periphery of the vehicle inner surface side of an inorganic glass plate (inorganic material plate-like body for a vehicle window) 51, and further, the antenna conductor is located more centrally than the concealing coating body 53. The group 54 is provided around the concealing coating 53 and is connected to the outside through a feeding point 56.

  FIG. 10 is a sectional view taken along line AA in FIG. The concealing coating 53 and the linear antenna conductor are spaced apart from each other on the same surface of the inorganic glass plate 51 on the vehicle inner side (upper side of the drawing) to form an antenna conductor group. As a result, when the length of the antenna conductor group 54 is longer than the outer periphery or when the area of the installed window portion is small, the antenna conductor group 54 has a multi-line shape or spiral shape on the center side of the window portion from the opening 58. It is arranged with the arrangement configuration.

JP 11-91346 A

  However, in the case where an antenna conductor that satisfies the requirements for performance and performance of various types of radio waves accompanying the development of the ITS device is to be provided on the resin plate for vehicle windows, the antenna conductor is provided with the surface protective layer. There is known a method of forming directly or laminated on a resin film. In addition, the antenna conductor provided on the plate member for a vehicle window changes in radio wave reception performance depending on its position and shape, and the manufacturing restrictions also change.

  On the other hand, the radio wave reception performance of the antenna can be enhanced by changing the cross-sectional area of the antenna conductor. However, when the cross-sectional thickness of the antenna conductor is increased to improve the radio wave reception performance, the resin film may be distorted during injection molding. This causes a deformation of the resin plate-like body itself and an optical distortion due to a distortion of the resin film, and there is a problem that the quality on appearance is deteriorated.

  Further, the radio wave reception performance can also be improved by increasing the cross-sectional width of the antenna conductor or increasing the total length of the antenna conductor. However, in these cases, a wider arrangement area is required on the surface of the resin plate-like body for vehicle windows. In addition, in the conventional multi-line or spiral arrangement configuration arranged on the same surface, it is necessary to arrange the antenna conductors at a certain distance in order to ensure the insulation of the antenna conductors. In this case, the antenna conductor extends toward the center of the vehicle window plate. However, since the antenna conductor cannot be extended beyond the area where the window portion can be arranged, there is a problem that the antenna conductor cannot be arranged in the small window portion or the desired performance cannot be obtained even if arranged. It was.

  In addition, even if the antenna conductor can be disposed in the window portion, when the antenna conductor is disposed close to the limit of the area where the window portion can be disposed, a large number of antenna conductors are provided vertically and horizontally in the opening portion. As a result, there is a problem that the antenna conductor is conspicuous and the appearance design is impaired, and the visibility of the occupant is hindered.

  On the other hand, in order to solve the above-mentioned problem with a vehicle window plate using an inorganic glass plate, in the laminated glass having an intermediate film between the plurality of inorganic glass plates and the glass plate, the surface layer of the inorganic glass plate and the intermediate layer There has been proposed a configuration of a laminated glass provided with an antenna conductor group on each surface of the surface layer of the film and a multilayer antenna conductor in which these antenna conductor groups are laminated. However, in this configuration, there is a problem that it is difficult to reduce the weight of the vehicle window plate using an inorganic glass plate.

  In addition, in the above-described configuration, it is necessary to provide a hole for connecting the antenna conductor group having a multilayer structure to the inorganic glass plate. However, drilling a hole in an inorganic glass plate makes the manufacturing process complicated and difficult, which increases the manufacturing cost.

  Therefore, the present invention is lightweight, has a good antenna performance, has an excellent appearance design, does not impede the visibility of the occupant, and can be arranged in a small window portion that has been difficult to arrange the antenna conductor so far, and is efficient and An object of the present invention is to provide a vehicle window resin plate-like body including an antenna conductor that can be manufactured at low cost, and a method for manufacturing the same.

  The present invention is a resin plate-like body for a vehicle window provided with a linear antenna conductor, and the resin plate-like body for a vehicle window is composed of a plurality of resin members, and the antenna conductor is the vehicle Forming a plurality of antenna conductor groups separated in a virtual plane formed substantially parallel to the surface of the resin plate-like body, the antenna conductor groups are stacked to form a multilayer antenna conductor; The antenna conductor group is a resin plate-like body for a vehicle window with an antenna conductor, wherein the antenna conductor groups are electrically insulated and spaced apart from each other by the resin member and are electrically joined at at least one point near the feeding point. I will provide a.

  According to a second aspect of the present invention, in the first aspect, the multi-layer antenna conductor has a multi-layer structure in which the antenna conductor groups stacked on the virtual plane are overlapped in the surface direction of the resin plate for vehicle window. The resin-made plate-like body for vehicle windows as described is provided.

  According to a third aspect of the present invention, the multi-layer antenna conductor is provided around the peripheral portion of the vehicle window resin plate-like body in a substantially parallel manner, and is provided in the vehicle window resin plate-like body. A vehicle window resin plate-like body according to aspect 1 or 2, which is disposed so as to be concealed by the above.

  According to a fourth aspect of the present invention, there is provided the vehicle window resin plate-like body according to the first, second or third aspect, wherein the antenna conductor is capable of receiving a radio wave having a frequency of 500 kHz or more.

  According to a fifth aspect of the present invention, there is provided the vehicle window resin plate-like body according to the first, second, third or fourth aspect, wherein the antenna conductor is capable of receiving radio waves having a frequency of 3 MHz or higher.

  According to a sixth aspect of the present invention, there is provided a method for producing a vehicle window resin plate having a linear antenna conductor, wherein the antenna conductor is substantially parallel to a surface of the vehicle resin plate. Forming an antenna conductor group in an imaginary plane formed on the substrate, placing a resin member having the antenna conductor group pattern in a mold, and forming a multilayer antenna conductor structure by a plurality of antenna conductor groups; An antenna conductor provided with an antenna conductor including a step of preparing a feeding point, a step of injection-molding a resin plate member for vehicle window so as to include the resin member, and a step of electrically joining the antenna conductor groups A manufacturing method of a manufacturing method of a resin plate-like body for a vehicle window with a door is provided.

  The present invention achieves weight reduction by using a resin plate for the vehicle window plate, and the antenna conductor is formed in a thickness direction substantially parallel to the surface of the vehicle resin plate. By laminating antenna conductor groups arranged in a virtual plane, it is possible to realize a vehicle window resin plate-like body that achieves both good antenna performance and excellent appearance design. In addition, it is possible to arrange the antenna in a small window portion where it has been difficult to arrange the antenna conductor until now. Moreover, since the arrangement area of the antenna conductor occupying the window portion is reduced, the antenna conductor is difficult to see and the visibility of the passenger is improved. Moreover, if the manufacturing method of this invention is used, the resin-made plate-shaped object for vehicle windows provided with the antenna conductor which can be manufactured efficiently and cheaply and its manufacture can be manufactured.

  Specifically, by using a resin for the plate for a vehicle window, the weight can be reduced as compared with the case of using a conventional inorganic glass plate, and the antenna conductor is on the same plane as the plate for a vehicle window. By forming a group and laminating in the thickness direction and providing a multilayer structure, the area required for antenna placement can be reduced if the performance is equivalent. Thereby, a passenger's visibility improves.

In addition, it is possible to arrange the antenna in a small window portion where the antenna conductor could not be arranged so far. In particular, it is suitable for a window portion of 0.5 m ² or less such as a rear quarter window or a bench window of an automobile, and more suitable for a window portion of 0.1 m ² or less.

  Moreover, it is possible to reduce the distortion of the resin film and the deformation of the resin during the injection molding due to the thickness and width of the antenna conductor, to realize a vehicle window plate without distortion, and to improve the appearance design of the window portion. .

  If the antenna conductor group is an n-layer structure that overlaps in the plane direction of the vehicle window resin plate, the arrangement area can be reduced to a maximum of 1 / n and to a maximum of 1/2 in a 2-layer structure. it can.

  Furthermore, if the antenna conductor is arranged so as to be hidden behind a concealing layer such as a concealing coating body, the opening of the window portion can be made wider, so that the visibility is further improved. At the same time, the appearance can be displayed more clearly, and the completeness of the design is improved.

  In addition, since the degree of freedom of design corresponding to the wavelength of radio waves increases, the reception performance of various radio waves, particularly short-wave radio waves, is improved. Specifically, it is suitable for signal reception of a vehicle-mounted television, a mobile phone, an ITS device, or the like. It is also suitable for terrestrial digital TVs that are expected to be installed in vehicles in the future.

  Moreover, if the manufacturing method of this invention is used, not only can weight reduction be achieved compared with the former by using resin for the plate body for vehicle windows, but also a resin member provided with a linear antenna conductor group pattern in the mold. By mounting, the multilayer structure of the antenna conductor group can be formed, and the resinous plate-like body for the vehicle window can be integrally formed by injection so as to include the resin member. By the manufacturing method including this step, the workability of the plate-like body is improved. As a result, it is possible to improve the efficiency of drilling work for joining the antenna conductor group to the vehicle window resin plate-like body and the work for arranging the antenna conductor group in the multilayer structure, and the low-cost and high performance resin plate-like body for the vehicle window and The manufacturing method can be provided.

  Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. FIG. 1 and FIG. 2 are a front view of an example of the configuration of a resin plate-like body for a vehicle window according to the present invention as viewed from the vehicle inner side, and a cross-sectional view taken along the line BB.

  The vehicle window resin plate-like body 10 includes a first organic resin layer 1 on the inner side of the vehicle and a second organic resin layer 2 on the outer side of the vehicle, and is concealed on the peripheral edge of the inner side surface of the second organic resin layer 2. A painted body 3 is provided around. The antenna conductor is linear, and the first antenna conductor group 4 and the second antenna conductor group 5 have a layer structure on two virtual surfaces formed substantially parallel to the surface of the resin plate-like body. The multilayer antenna conductor is formed. The first antenna conductor group 4 is disposed substantially parallel to the concealing coating body 3 on the center side of the concealing coating body 3 on the inner surface of the first organic resin layer 1. Similarly, the second linear antenna conductor group 5 is disposed at the interface between the first organic resin layer 1 and the second organic resin layer 2. At this time, each antenna conductor group is electrically insulated by the first organic resin layer 1.

  3 is a cross-sectional view taken along the line CC in FIG. As shown in the figure, the first antenna conductor group 4 and the second antenna conductor group 5 are electrically joined through a via 7 provided in the first organic resin layer 1 in the vicinity of the feeding point 6. The Furthermore, an amplifier (not shown) that amplifies radio waves received via a circuit is connected to the antenna conductor, and a predetermined process is performed as necessary, and the antenna conductor is supplied to an in-vehicle media device such as a television. The radio wave received from the antenna conductor may be transmitted to each media device by a wireless LAN or the like.

  Here, an example in which two layers of antenna conductor groups are stacked is shown, but three or more layers may be stacked. Usually, the thickness used for the vehicle window resin plate 10 is preferably 3 layers or less, more preferably 2 layers. By reducing the number of layers, the arrangement of the multilayer antenna conductor can be facilitated, and the processing effort can be reduced. Moreover, it becomes easy to ensure the insulation between the antenna conductor groups in the thickness direction of the vehicle window plate.

  In addition, here, the first antenna conductor group 4 and the second antenna conductor group 5 are configured to be displaced in the plane direction of the vehicle window plate. However, the antenna conductor groups are each for a vehicle window. You may overlap in the surface direction of a plate-shaped object. By shifting the antenna conductor groups of the vehicle window plate in the plane direction, it is possible to prevent performance deterioration due to mutual interference of the antenna conductors. On the other hand, by overlapping the antenna conductor groups, the arrangement area of the multilayer antenna conductor can be minimized, the number of apparent antenna conductors can be reduced, and the appearance can be clearly displayed.

  In FIG. 1, the first organic resin layer 1 used for the vehicle window resin plate 10 may be a transparent resin or may be colored. A resin such as a polycarbonate resin or an acrylic resin is preferably used. Moreover, the 1st organic resin layer 1 and the 2nd organic resin layer 2 may be laminated | stacked on the whole surface of the plate body for vehicle windows, and may be laminated | stacked partially. In the case of using a colored resin, it is preferable to color only the peripheral portion, and an organic resin layer may be laminated in an outer frame shape only on the peripheral portion to provide a concealing function.

  The second organic resin layer is preferably a transparent resin, and a known transparent resin such as a polycarbonate resin or an acrylic resin can be used. Compared with inorganic glass, a polycarbonate resin that is excellent in electrical properties such as insulation and has the same visible light transmittance is preferable. It is preferable to apply a hard coat for surface protection on the outermost surface of the organic resin layer. A known material can be used for the hard coat means. The hard coat means can be formed by a known method such as application of a resin film or wet coating, but it is preferable to apply an acrylic or silicone resin film to improve the scratch resistance.

  Further, a known material such as a colored ink can be used for the concealing coating body 3. The concealing coating body 3 may be uniformly fixed to the surface of the peripheral edge portion of the organic resin layer, but may be in the form of dots or gradation.

The material and arrangement of the antenna conductor can be changed depending on the type of radio wave received. Depending on the shape of the resin plate for vehicle window to be attached and the number of antenna conductor groups stacked, it is possible to cope with radio waves of various wavelengths. The shape and arrangement of the antenna conductor has a frequency of 500 kHz or more. It is preferable to arrange it so that it can cope with radio waves. This is because the reception performance can be effectively improved by extending the total length of the antenna conductor, so that the characteristics of the present invention can be fully exhibited and AM broadcast can be received. For example, the antenna conductor can have a conductivity of 10 ⁻⁴ to 10 ⁻⁵ Ω, a thickness of ⁵ to 10 μm, and a width of 0.4 to 0.7 mm.

  Further, it is more preferable to dispose so as to cope with radio waves having a frequency of 3 MHz or higher. This is because it is possible to reliably improve the performance by extending the total length of the antenna conductor and to cope with shortwave broadcasting. Further, it is more preferable that the antenna is arranged so as to be compatible with radio waves having frequencies of 50 MHz and 400 MHz or higher. This is because desired radio waves can be received by the effect of resonance in addition to the effect of extending the total length of the antenna conductor. By supporting frequencies of 50 MHz or higher, it is possible to receive overseas television broadcasts and FM broadcasts, and by supporting frequencies of 400 MHz or higher, it is possible to handle terrestrial digital TV broadcasts that are expected to be used in vehicles in the future. This is because it becomes possible.

  As a material used for the antenna conductor, for example, conductive ink made of carbon paste mixed with silver particles can be suitably used. The conductive ink can be printed by a technique such as screen printing along the wiring shape. The antenna conductor group can be directly fixed to the organic resin layer like a conductive ink, but it may be fixed in advance to a desired resin member or resin film, or a combination thereof. . In order to form the multilayer antenna conductor, the antenna conductor group fixed to the resin member or the resin film may be laminated before molding the resin plate-like body for the vehicle window. It can also be laminated. It is also possible to form a multi-layered structure by forming a resin plate-like body for a vehicle window and then forming grooves or the like by post-processing, and disposing antenna conductor groups on the groove surface and on the inner side surface of the vehicle.

  In the configuration example shown in FIG. 3, each antenna conductor group is directly joined via the via 7. The via 7 may be formed in advance or may be formed after molding, but the process can be simplified if the via 7 is simultaneously formed during integral injection molding of the first organic resin layer 1. Further, the antenna conductor groups need only be electrically joined, and may be joined by electromagnetic coupling or electrostatic coupling without providing a direct contact such as a via. In the case of electromagnetic coupling, it is not necessary to make a hole in the first organic resin layer 1, and the manufacture becomes easy. Since the feeding point 6 can be attached at any time after the injection molding, it may be attached in a desired process.

  FIGS. 4 and 5 are a front view and another cross-sectional view taken along the line DD, as seen from the vehicle inner side, showing another configuration example of the vehicle window resin plate-like body according to the present invention. The vehicle window resin plate-like body 20 includes an outer frame-shaped first organic resin layer 1 on the inner side of the vehicle and a plate-like second organic resin layer 2 on the outer side of the vehicle. A concealing coating body 3 is provided around the periphery of the inner side surface of the vehicle. The first antenna conductor group 4 is disposed so as to be concealed by the concealing coating body 3, and the second antenna conductor group 5 is disposed at the interface between the first organic resin layer 1 and the second organic resin layer 2. Spaced apart. Both the first antenna conductor group 4 and the second antenna conductor group 5 are disposed so as to overlap each other in the surface direction of the concealment coating body 3 and the vehicle window resin plate-like body, and are concealed from the vehicle interior side.

  As shown in FIGS. 4 and 5, the organic resin layer of the vehicle window resin plate-like body does not need to have a uniform thickness over the entire surface as long as it satisfies the performance as a vehicle window, and is functionally necessary. Only such a portion may have a multilayer structure, and the thickness may be partially changed. Further, only one of the first antenna conductor group 4 and the second antenna conductor group 5 may be disposed so as to overlap the concealing coating body 3. This is because the antenna conductor becomes difficult to see from the inside of the vehicle, the opening 8 can be made wider, and the visibility and design of the appearance are improved.

  Also, a resin molded product is prepared, and the antenna conductor is attached by plating or the like before injection molding to create a resin molded product 31 with plating (the broken line portion in FIG. 4), and the vehicle window resin plate includes this. A shaped body may be formed. The number of parts can be reduced by sharing the resin molded product 31 with plating among a plurality of types of resin plate-like bodies for vehicle windows.

  Next, a method for manufacturing a vehicle window resin plate-like body according to the present invention will be described with reference to FIGS. In the manufacturing process shown in FIG. 6, a hard coat film (not shown) punched in accordance with the product shape and a resin film on which an antenna conductor group pattern is printed are prepared. Next, a hard coat film and a resin film 22 with a first antenna conductor group are mounted on the upper mold 13, and a resin film 23 with a second antenna conductor group is mounted on the lower mold 14. Next, a colored organic resin layer 21 is injection-molded between resin films with antenna conductor groups attached to the upper mold 13 and the lower mold 14, respectively, and an organic resin having a multilayer antenna conductor having the shape shown in FIG. A molded body is created. Next, the lower mold 14 is changed, and the second organic resin layer 2 made of a transparent resin is secondarily injected on the vehicle exterior side of the resin film 23 with the second antenna conductor group, and the vehicle shown in FIG. A resin plate-like body for windows is obtained.

  During the secondary injection, a hard coat film may be attached to the outside of the second organic resin layer 2 and integrally molded. Here, an example in which injection molding is performed using colored and transparent organic resins is shown, but the first organic resin layer 2 may be a transparent organic resin, and may further be combined with a concealing coating body 3. The manufacturing method shown in FIG. 6 is suitable when it is desired to form a resin plate-like body for a vehicle window using a plurality of other resins having different characteristics because injection molding can be performed in two steps. is there. In addition, since a multilayer structure of antenna conductors can be formed relatively easily, it is suitable for realizing a configuration that does not require vias or the like, and may be used when a configuration using electromagnetic coupling or electrostatic coupling is manufactured.

  Hard coating may not be performed on the first antenna conductor group-attached resin film 22 side, and the first antenna conductor group-attached resin film 22 may have a hard coat function and may also serve as a hard coat film. Moreover, the resin film which printed the hard coat film and the antenna conductor group pattern may each be provided with a protective sheet. This is because damage to the resin film and the antenna conductor before the injection molding can be prevented. About the hard coat and protective resin film of the resin-made plate-like body surface for vehicle windows, it can apply similarly also about the following manufacturing methods.

  In the manufacturing process shown in FIG. 7, a resin molded product having the basic shape shown in FIG. 7 (A) is prepared, and the second antenna conductor group 5 is adhered to the outer surface of the vehicle by plating or the like, thereby providing a resin with plating. Let it be a molded product 31. Next, the plated resin molded product 31 is mounted on the mold 12 as shown in FIG. 7B, and the first organic resin layer 1 and the second organic resin are placed between the upper mold 13 and the lower mold 14. Layer 2 is injection molded at the same time. Next, the molded vehicle window plate is removed from the mold 12 and the concealing coating body 3 is fixed. Next, the first antenna conductor group 4 and the circuit wiring are fixed to the inner surface of the first organic resin layer 1 by printing or the like to obtain a vehicle window resin plate-like body.

  Here, an example in which the concealment coating body 3 is formed before the first antenna conductor group 4 is fixed is shown, but it may be formed after the first antenna conductor group 4 is fixed. Also, here, a method is shown in which the first antenna conductor group 4 is fixed after injection molding of the organic resin layer. However, the first antenna conductor group 4 is fixed to the resin molded product by plating or the like before injection molding. May be.

  In the manufacturing method shown in FIG. 7, it is possible to share the resin-molded product 31 with plating, which is the basic shape of the multilayer antenna conductor, with a plurality of shapes of resin plates for vehicle windows. A resin plate-like body for a vehicle window can be obtained. If the resin molded product 31 with plating is a product shape that can be attached to the mold 12, the design of the antenna conductor can be omitted and efficient production becomes possible. In addition, it is possible to create a multi-layer antenna conductor provided in a plurality of shapes of vehicle window plates with a common mold, thereby reducing the number of parts and inexpensively providing a resin plate for a vehicle window with a multi-layer antenna conductor. A body can be produced.

  In the manufacturing process shown in FIG. 8, a resin film printed with an antenna conductor group pattern punched in accordance with the product shape is laminated to obtain a resin film 41 with a multilayer antenna conductor shown in FIG. The resin film 41 with a multilayer antenna conductor is provided with an adhesive means (not shown) on the first organic resin layer side and is attached to the upper mold 13. Next, the first organic resin layer 1 and the second organic resin layer 2 are simultaneously injection-molded between the upper mold 13 and the lower mold 14, and the vehicle window resin plate-like body shown in FIG. Get. Next, the concealment coating body 3 is fixed.

  In the manufacturing process shown in FIG. 8, the resin film 41 with an antenna conductor group can be continuously manufactured by using the resin film 41 with a multilayer antenna conductor. Moreover, since the lamination | stacking operation | work of the resin films with an antenna conductor group can be performed before injection molding, efficient production is realizable.

  Here, an example in which the antenna conductor group is laminated before mounting on the mold and the resin film 41 with the multilayer antenna conductor is injection-molded is shown, but the resin film 41 with the multilayer antenna conductor is a single layer. A resin film with an antenna conductor group may be used by being laminated on the mold 12 when mounted. The arrangement configuration in which the antenna conductor groups overlap each other is preferable because a multilayer antenna conductor can be formed by laminating the same film.

  INDUSTRIAL APPLICABILITY The present invention can be suitably used for a vehicle window plate having a function of receiving various radio waves, particularly a fixed window plate having an antenna function mounted on an automobile. Moreover, although the example which uses the resin-made plate-like body with a multilayer antenna conductor for the fixed window of the vehicle was mentioned above, this invention is not limited to this. For example, it can also be used when an antenna function is added to a resin plate-like body in other openings of a vehicle, openings of a transportation facility such as an airplane or a ship, or a building such as a building or a house.

It is a front view which shows an example of a structure of the resin-made plate-shaped object for vehicle windows which concerns on this invention. It is sectional drawing of the resin-made plate-like body for vehicle windows in the BB line cross section shown in FIG. FIG. 3 is a cross-sectional view of the vicinity of a feeding point in the cross section taken along the line CC shown in FIG. It is a front view which shows an example of a structure of the resin-made plate-shaped object for vehicle windows which concerns on this invention. It is sectional drawing of the resin-made plate-like body for vehicle windows in the DD sectional view shown in FIG. It is sectional drawing which shows an example of the manufacturing method of the resin-made plate-shaped objects for vehicle windows which concerns on this invention. It is sectional drawing which shows an example of the manufacturing method of the resin-made plate-shaped objects for vehicle windows which concerns on this invention. It is sectional drawing which shows an example of the manufacturing method of the resin-made plate-shaped objects for vehicle windows which concerns on this invention. It is a front view which shows an example of a structure of the conventional plate member for vehicle windows. It is sectional drawing of the plate-like body for vehicle windows in the AA cross section shown in FIG.

Explanation of symbols

1: First organic resin layer (inside the car)
2: Second organic resin layer (vehicle exterior)
3: Painted body for concealment 4: First antenna conductor group (inside the car)
5: Second antenna conductor group (vehicle exterior)
6: Feeding point 7: Via 8: Opening 10, 20: Plastic plate for vehicle window 12: Mold 13: Upper mold 14: Lower mold 21: Colored organic resin layer 22: With first antenna conductor group Resin film 23: Resin film with second antenna conductor group 31: Resin molded product with plating 41: Resin film with multilayer antenna conductor 51: Inorganic glass plate (plate material made of inorganic material for vehicle window)
53: Coating body for concealment 54: Antenna conductor group 56: Feed point 58: Opening 60: Plate for vehicle window

Claims (7)

A resin window plate for a vehicle window provided with a linear antenna conductor,
The vehicle window resin plate-like body is constituted by a plurality of resin members,
The antenna conductor forms a plurality of antenna conductor groups spaced in a virtual plane formed substantially parallel to the surface of the vehicle resin plate-like body,
The antenna conductor groups are laminated to form a multilayer antenna conductor, the antenna conductor groups are electrically insulated and spaced apart by the resin member, and are electrically joined at at least one point near the feeding point, The multilayer antenna conductor is provided so as to be substantially parallel to a peripheral portion of the vehicle window resin plate and is concealed by a concealing layer provided in the vehicle window resin plate. A resin plate-like body for a vehicle window with an antenna conductor. The resin conductor for vehicle window with an antenna conductor according to claim 1, wherein the antenna conductor groups are electrically joined to each other through a via. The vehicle with an antenna conductor according to claim 1 or 2 , wherein the multilayer antenna conductor has a multilayer structure in which antenna conductor groups stacked on the virtual plane are overlapped in a plane direction of the resin plate-like body for a vehicle window. Resin plate for windows. The antenna conductor, the antenna conductor with the vehicle window resin plate body as claimed in claim 1, 2 or 3 can receive a radio wave over the frequency 500 kHz. The antenna conductor, the antenna conductor with the vehicle window resin plate body as claimed in claim 1, 2, 3 or 4 can receive radio waves of higher frequency 3 MHz. A method for producing a resinous plate-like body for a vehicle window provided with a linear antenna conductor,
The antenna conductor forms an antenna conductor group in a virtual plane formed substantially parallel to the surface of the vehicle resin plate-like body,
Placing a resin member comprising the antenna conductor group pattern in a mold;
A step of forming a multilayer antenna conductor structure by a plurality of antenna conductor groups; a step of preparing a feeding point; a step of injection-molding a resin plate-like body for a vehicle window so as to include the resin member; look including a step of joined,
The multilayer antenna conductor is provided so as to be substantially parallel to a peripheral portion of the resin plate-like body for a vehicle window, and to be concealed by a concealing layer provided in the resin-made plate body for the vehicle window. Lu A method for manufacturing a resinous plate-like body for a vehicle window with an antenna conductor provided with an antenna conductor.   The said resin member is a resin film, The manufacturing method of the resin-made plate-shaped objects for vehicle windows provided with the antenna conductor of Claim 6.

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