WO2019198561A1 - Windshield equipped with glass antenna element - Google Patents

Windshield equipped with glass antenna element Download PDF

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Publication number
WO2019198561A1
WO2019198561A1 PCT/JP2019/014572 JP2019014572W WO2019198561A1 WO 2019198561 A1 WO2019198561 A1 WO 2019198561A1 JP 2019014572 W JP2019014572 W JP 2019014572W WO 2019198561 A1 WO2019198561 A1 WO 2019198561A1
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WO
WIPO (PCT)
Prior art keywords
antenna element
region
windshield
glass
power feeding
Prior art date
Application number
PCT/JP2019/014572
Other languages
French (fr)
Japanese (ja)
Inventor
慎 北川
明宏 野口
一仁 遠江
Original Assignee
セントラル硝子株式会社
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by セントラル硝子株式会社 filed Critical セントラル硝子株式会社
Priority to CN201980025639.6A priority Critical patent/CN112005434B/en
Priority to JP2020513210A priority patent/JP7231851B2/en
Publication of WO2019198561A1 publication Critical patent/WO2019198561A1/en

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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q1/00—Details of, or arrangements associated with, antennas
    • H01Q1/12—Supports; Mounting means
    • H01Q1/22—Supports; Mounting means by structural association with other equipment or articles
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q1/00—Details of, or arrangements associated with, antennas
    • H01Q1/27—Adaptation for use in or on movable bodies
    • H01Q1/32—Adaptation for use in or on road or rail vehicles

Definitions

  • the present invention relates to a technique for utilizing a windshield installed as a fixed window of a vehicle as an antenna element without using an antenna film for retrofitting.
  • Radio wave receiving devices that receive radio waves such as terrestrial digital broadcast waves, GPS, and DAB are also installed at vehicle dealers and at car accessory dealers.
  • the plastic film on which the glass antenna element is formed is within a range where the windshield can be visually recognized. It will be affixed inside. Since the windshield is installed as a fixed window of the vehicle, in the case of pasting, the glass antenna element does not have to be in a state where all the antenna elements are visible as shown in FIGS. I do not get.
  • a vehicle may be installed as a standard product with a radio wave receiver.
  • a glass assembly in which an antenna element and a connector for joining the antenna element to a device are formed is installed in the vehicle.
  • the feeding portion of the antenna element to which the connector is joined is designed to be a position covered with an interior wall called a trim of the vehicle. Therefore, inevitably, most of the antenna elements are arranged on a band-shaped visible light shielding region made of a black ceramic shielding film or the like.
  • Patent Document 3 when viewed from the outside of the window glass, all or part of the antenna element is not visible from the outside of the vehicle, and the window glass has an excellent design.
  • the radio wave receiver When the radio wave receiver is attached to the vehicle after the windshield is installed as a fixed window of the vehicle (this is referred to as “retrofitting method”), there are the following problems.
  • the connector and the entire glass antenna element are visually recognized. Therefore, from the aesthetic point of view, the antenna element must be simple and small. In that case, it is difficult to improve the reception sensitivity of the antenna element.
  • the radio wave receiver When the radio wave receiver is attached to a vehicle in a retrofitting manner, it can be said that there is a trade-off between the design freedom of the antenna element related to the reception sensitivity of the antenna element and the aesthetics related to the antenna element.
  • the present invention relates to a windshield including a glass antenna element with a retrofitting method, which increases the design freedom of the antenna element related to the reception sensitivity of the antenna element and easily improves the aesthetics related to the antenna element. It is an issue to provide.
  • the windshield (1) of the present invention is a windshield (1) installed as a fixed window of a vehicle having an interior wall (6) in an indoor space, and the windshield (1) A glass plate (2); A first side region (31) on the end surface (21) side of the glass plate (2) and a second side opposite to the side region (31) are formed at the peripheral portion of the windshield (1).
  • a band-shaped visible light shielding region (3) having a side region (33) and a central region (32) between the first and second side regions (31, 33);
  • a glass antenna element formed on the visible light shielding region (3), The joint structure and the central region (32) are covered by the interior wall (6),
  • the glass antenna element includes a power feeding part (10) made of a conductive material, and an antenna element made of a conductive material tied to the power feeding part (10),
  • the feeding part (10) is arranged in the second side region (33);
  • the antenna element is arranged at least on the central region (32).
  • the connector (8) can be attached in a state where the windshield (1) is installed as a fixed window of the vehicle. And the said windshield (1) can be made into the component of an electromagnetic wave receiver through this connector (8).
  • the antenna element is disposed not only in the side region (33) but also in the central region (32).
  • an antenna element such as a film antenna is attached to a windshield fixed as a window on the vehicle, so that the central region (32) is not utilized. Since the present invention was made with the new idea of utilizing the central region (32), the design flexibility of the antenna element related to the reception sensitivity of the antenna element is increased, and the aesthetics related to the antenna element can be easily improved. Can be a thing.
  • the present invention is also a method of using a radio wave receiving device, Preparing the windshield (1) (A); Bonding the feeding part (10) and the connector (8), the glass antenna element, And a step (B) of electrically joining the wiring (9) passing through the space (7) between the interior wall (6) and the central region (32).
  • the windshield of the present invention increases the degree of design freedom of the antenna element related to the reception sensitivity of the antenna element. And it has the effect that it is easy to improve the beauty
  • FIG. 1 shows roughly the cross section of the principal part of the windshield (1) of this invention. It is a figure which illustrates roughly the principal part when the windshield (1) of this invention is seen from the outdoor side. It is a figure which illustrates roughly the principal part when the windshield (1) of this invention is seen from the indoor side. It is a figure which illustrates schematically the principal part when the windshield (1 ') of a prior art example is seen from the outdoor side. It is a figure which illustrates schematically the principal part when the windshield (1 ') of a prior art example is seen from the indoor side. It is a figure explaining the definition method of the area area which a glass antenna element occupies. It is a graph which shows the antenna receiving sensitivity of the Example of this invention. It is a figure which illustrates roughly the principal part when the windshield (1) is seen from the room inner side in the aspect in case all the glass antenna elements are arrange
  • FIG. 1 shows roughly the cross section of the principal part of the windshield (1) of this invention. It is a figure
  • FIG. 1 is a diagram schematically showing a cross section of the main part of the windshield 1 of the present invention
  • FIG. 2 is a diagram schematically illustrating the main part when the windshield 1 of the present invention is viewed from the outdoor side.
  • 3 is a diagram schematically illustrating a main part of the windshield 1 according to the present invention when viewed from the indoor side.
  • FIG. 4 is a diagram schematically illustrating a main part of the conventional windshield 1 ′ viewed from the outdoor side
  • FIG. 5 illustrates a main part of the conventional windshield 1 ′ viewed from the indoor side.
  • FIG. 1 is a diagram schematically showing a cross section of the main part of the windshield 1 of the present invention
  • FIG. 2 is a diagram schematically illustrating the main part when the windshield 1 of the present invention is viewed from the outdoor side
  • 3 is a diagram schematically illustrating a main part of the windshield 1 according to the present invention when viewed from the indoor side.
  • FIG. 4 is a diagram schematically illustrating a main part of
  • the windshield 1 is a windshield 1 installed as a fixed window of a vehicle having an interior wall 6 in an indoor space.
  • the windshield 1 is formed on a glass plate 2 and a peripheral portion of the windshield 1.
  • a central region 32 between the side region 31 and the side wall region 31 is covered with the interior wall 6, and the glass antenna element includes a power feeding unit 10 made of a conductive material and the power feeding unit 1. And a antenna element made of a conductive material connected with the power supply unit 10, the disposed side region 33, the antenna element is disposed on at least the central region 32, Is.
  • the visible light shielding region 3 is preferably made of black ceramic.
  • a paste-like color ceramic such as black ceramic is applied to the peripheral edge of the glass plate 2 by screen printing or the like, and the glass plate 2 is bent by heat treatment. Formed when.
  • the windshield 1 is bonded to the body flange 5 when attached to the vehicle. Therefore, the joining structure part etc. which were formed with the said adhesive unit 4 are provided in the peripheral part of the glass plate 2.
  • the said windshield 1 shall be provided with the said visible light shielding area
  • a connector 8 having a wiring 9 is joined to the power supply unit 10, and the wiring 9 and the glass antenna element are electrically joined via the connector 8.
  • the wiring 9 passes through the space 7 between the central region 32 and the interior wall 6 and is joined to a ground plane, an amplifier, a radio receiver, a television receiver, and other communication devices (for these, (Not shown).
  • a spring connector including a spring-type metal conducting portion and a frame made of plastic or the like that covers the metal conducting portion is preferably used.
  • the spring-type metal conductive portion is brought into contact with the power supply portion 10 to compress the spring-type metal conductive portion, and in this state, the frame body is fixed to the windshield 1 with a double-sided tape or an adhesive.
  • the connector 8 and the power feeding unit 10 can be joined.
  • the radio wave receiving device Whether or not the radio wave receiving device is installed and operated in a vehicle is considered to be a business format determined by the vehicle user.
  • the contractor after confirming whether or not the radio wave receiving apparatus is intended to be used by the contractor consulting with the vehicle user, the contractor joins the connector 8 including the wiring 9 to the power supply unit 10, and connects the connector 8.
  • the wiring 9 and the glass antenna element are preferably joined electrically.
  • the glass antenna element includes a core wire side antenna element 11 and a ground side antenna element 12.
  • the core wire side antenna element 11 extends from the power feeding unit 10h, and the ground side antenna element 12 extends from the power feeding unit 10a.
  • the antenna element is also disposed on the central region 32. Since the antenna element arranged in the central region 32 is not visually recognized by the user of the vehicle by the interior wall 6, the shape and size of the antenna element in that region without affecting the aesthetic appearance of the windshield 1, Designed with priority on improving radio wave reception sensitivity.
  • the glass antenna element Since the antenna element is also arranged in the central region 32, the glass antenna element has a region covered with the interior wall 6.
  • the antenna element disposed on the central region 32 is preferably joined to the power feeding unit 10 via the antenna element disposed on the side region 33.
  • the power feeding unit 10 can be arranged shifted from the boundary between the side region 33 and the central region 32, and as a result, the connector 8 can be easily attached to the power feeding unit 10. be able to.
  • the antenna element may be disposed on the see-through region 22 on the indoor side of the glass plate 2.
  • the size of the glass antenna will be described. Concerning the formation area of the glass antenna element, the largest area among the areas that can be formed by connecting the power feeding part that forms the antenna element, the tip part at the outermost shell, the apex part, or the arc part in the antenna element is formed. This is defined as the area (B) of the glass antenna element. Within the region (B), the region covered with the interior wall is the region (A). For example, in the case of the glass antenna element shown in FIG. 3, the region (B) is a region surrounded by a dotted line as shown in FIG. In FIG. 5, the region (A) is a region above the broken line in the region surrounded by the dotted line.
  • the ratio of the region (A) As the ratio of the region (A) is increased, the windshield 1 is aesthetically preferable. However, if the ratio is too high, the amount of antenna elements close to the body flange 5 increases. Considering these, the ratio of the area of the region (A) to the region (B) is 15% to 30%, preferably 20% to 25% in the region (A) / region (B).
  • the antenna element In consideration of the electrical influence from the body flange 5, the antenna element may not be arranged in the side region (31) facing the body flange. Further, from the viewpoint of considering the electrical influence from the body flange 5, in the antenna element, the shortest distance between the side region (31) and the side region (31) closest to the side region (31) is 5 mm. It may be ⁇ 35 mm.
  • the core wire side antenna element 11, the ground side antenna element 12, the core wire side antenna element 11 extended from the power supply portion 10h, and the power supply portion 10a are extended.
  • the glass antenna element including the ground side antenna element 12 can be suitably used for terrestrial digital television broadcasting, radio wave reception for DAB, radio wave reception for GPS, 5G communication, vehicle-to-vehicle communication, and the like.
  • the core wire side antenna element 11 includes a wire extending in a direction away from the body flange 5 from the power feeding portion 10h.
  • a wire is provided, radio waves received by the core wire side antenna element can be prevented from leaking to the body flange 5, and the reception sensitivity of the antenna can be improved.
  • the line is a straight line extending so as to be perpendicular or substantially perpendicular to the side of the visible light shielding region 3, and is parallel or substantially parallel to the side of the visible light shielding region 3 from the tip. It is good also as extending
  • the antenna element extending in the direction away from the body flange 5 is formed on the visible light shielding region 3, and
  • the glass plate 2 may be disposed on the see-through region 22 on the indoor side. Even in that case, according to the configuration of the present invention, the ratio of the elements arranged in the fluoroscopic region 22 can be minimized.
  • the ground side antenna element 12 is also disposed on the central region 32.
  • the ground side element 12 preferably has a larger structure than the core wire side element 11 in order to improve the radio wave reception sensitivity of the antenna element. Large structures are more visible.
  • the ground side element 12 may have a rectangular structure with a relatively good appearance and may have a solid-coated region 121 made of the conductive material in the structure.
  • the power supply unit 10a may be integrated with the solid region 121 or may be included in the solid region.
  • the size of the solid area 121 does not greatly affect the reception sensitivity. By adjusting, the reception sensitivity can be finely adjusted.
  • the ground side element 12 when receiving radio waves in a frequency band of 470 MHz to 710 MHz, the area of the rectangular structure is 1500 mm 2 to 4000 mm 2 , and further 2000 mm 2 to 3500 mm 2 . It is preferable.
  • the glass antenna element is formed in the upper side region of the windshield 1, but the glass antenna element is formed in the side region and the lower side region of the windshield 1. It may be formed.
  • the core wire side antenna element 11 is provided with a wire extending in a direction away from the body flange 5 from the power feeding portion 10h, and further, the visible light shielding region 3 from the tip of the wire. It is preferable to include L-shaped filaments that are stretched so as to be parallel or substantially parallel to the sides. However, since the length of the line extending in the direction away from the body flange 5 can be very small in this aspect, the radio wave received by the core wire side antenna element is leaked to the body flange 5.
  • the windshield 1 preferably has a structure in which the ground side antenna element 12 extends between the core wire side antenna element 11 and the body flange 5 as shown in FIG. By providing such a structure, it is possible to easily prevent radio waves received by the core wire side antenna element from leaking to the body flange 5.
  • the ground side antenna element 12 may be provided with a line extending toward the body flange 5.
  • the ground side antenna element 12 has a relationship in which the wire element is parallel to the edge of the body flange 5 between the core wire side antenna element 11 and the body flange 5 from the tip of the wire. It is good also as what has the structure to extend
  • the total length of the wire element of the core wire side antenna element 11 and the wire element of the ground side antenna element 12 is the frequency band of the radio wave to be received from the viewpoint of impedance adjustment.
  • the length of each filament is different so that the electric field generated in each filament element does not cancel out.
  • the length of the filament element of the core antenna element 11 is 3 / 4 ⁇
  • the length of the wire element of the ground side antenna element 12 may be 1 / 4 ⁇ .
  • all of the glass antenna elements are arranged on the visible light shielding area 3 in the form of terrestrial digital television broadcasting, radio wave reception for DAB, GPS, 5G communication, and inter-vehicle distance It can be suitably used for radio wave reception such as communication. Further, in the case where all of the glass antenna elements are arranged on the visible light shielding region 3, the antenna elements may be formed in a side region or a lower region of the windshield 1.
  • the curved, trapezoidal or rectangular glass plate 2 used in the windshield 1 of the present invention is used.
  • the glass plate may be either single plate glass or laminated glass, and the glass plate may be either tempered glass or non-tempered glass.
  • a glass plate made of soda-lime silicate glass as defined by ISO 16293-1, which is widely used as a glass plate for vehicles, manufactured by the float method can be used. Colorless or colored ones are used.
  • the strip-shaped visible light shielding region 3 formed on the peripheral edge of the windshield 1 is formed on the indoor surface side of the glass plate as shown in FIG.
  • the visible light shielding region 3 may be on the indoor surface side as shown in FIG. 1, or an intermediate film surface of the laminated glass or each glass facing the intermediate film. It may be on any main surface of the plate.
  • a color ceramic paste having a color pigment such as a black pigment and a glass frit is applied in a band shape to the peripheral portion of the glass plate by a method such as screen printing, and is fired near the softening point of the glass frit. You can get it.
  • the width of the visible light shielding region 3 as a band may be 40 mm to 100 mm, for example, depending on the vehicle on which the windshield 1 is installed.
  • the side region 31, the central region 32, and the side region 33 may be adjusted to be, for example, 35% to 50%, 20% to 35%, and the remaining part, respectively. Good.
  • a joining structure portion formed by the adhesive unit 4 that joins the region 31 and the body flange 5 is formed on the side region 31 side.
  • a polyurethane-based adhesive or the like may be used for the adhesive unit 4, and a primer that promotes adhesion with each member of the adhesive may be used at each interface between the region 31 and the body flange 5.
  • the body flange 5 is made of a metal such as a steel plate, and a thickness of 2 to 5 mm is preferably used.
  • a material made of a urethane material having a thickness of about 2 mm to 5 mm is used in the interior wall 6 that covers the joint structure portion and the side region 33 opposite to the side region 31 of the visible light shielding region 3 and the central region 32 between the side regions 31, A material made of a urethane material having a thickness of about 2 mm to 5 mm is used.
  • the glass antenna element can be obtained by applying a silver paste having silver particles and glass frit to a desired pattern by a method such as screen printing and
  • the present invention can use the windshield as an antenna element when a vehicle user decides to use a windshield installed as a fixed window of the vehicle as a radio wave receiver.
  • the windshield 1 'shown in FIGS. 4 and 5 is a typical example of a conventional windshield, and is used as an antenna for receiving radio waves of terrestrial digital broadcasting.
  • the glass antenna element includes a core wire side antenna element 11 and a ground side antenna element 12.
  • the core wire side antenna element 11 extends from the power feeding unit 10h, and the ground side antenna element 12 extends from the power feeding unit 10a.
  • the film 13 on which the glass antenna element is formed is stuck in a state where the side region 31 and the central region 32 of the visible light shielding region 3 are covered with the interior wall 6.
  • the film 13 is attached to an area where the film 13 can be applied, that is, an area not covered by the interior wall 6 of the windshield 1 ′. Therefore, it becomes difficult to arrange the antenna element of the glass antenna element in the central region 32. All of the antenna elements 11 and 12 are visible to the vehicle user from the indoor side (from the outdoor side, the antenna element and film 13 in the transparent region 22 are visible as shown in FIG. 4. Therefore, from an aesthetic point of view, the antenna element must be simple and small. Therefore, in the conventional example, it is difficult to improve the reception sensitivity of the antenna element.
  • a glass plate 2 having an antenna element and a black visible light shielding region 3 having a width of 45 mm at the peripheral edge as shown in FIG. 3 was prepared.
  • the side region 31 was set to a width of 25 mm
  • the central region 32 was set to a width of 15 mm
  • the side region 33 was set to a width of 5 mm.
  • the side region 31 faces the body flange 5, and the side region 31 and the central region 32 are regions covered with the interior wall 6.
  • the feeding portion 10h of the core wire side antenna element and the ground side antenna element 10a are positioned horizontally in the side region 33 (in FIG. 3, the direction of the side of the region 3 is horizontal). Be placed.
  • the shape of each power feeding part was a square, and the area was 25 mm 2 .
  • the distance between the power supply units 10a and 10h is 4 mm, and as shown in FIG. 3, the upper side and the upper side of each power supply unit, the lower side and the lower side are in a horizontal positional relationship, and the side sides are in a parallel positional relationship. I made it.
  • the lower side of each power feeding unit was set to a position of 15 mm from the boundary between the visible light shielding region 3 and the transparent region 22.
  • the core wire side antenna element 11 is composed of a wire extending downward from the feeding portion 10h as viewed in FIG. 3 and a wire extending from the tip of the wire to the left as viewed in FIG.
  • the filament to be stretched was 20 mm, and the length of the filament to be stretched to the left was 75 mm.
  • the ground-side antenna element 12 has a rectangular shape shown in FIG. 3, and has a structure that includes the feeding portion 10a inside the rectangular shape.
  • the power feeding part 10a is in contact with the left and lower sides of the rectangular body as seen in FIG. 3, and the left side of the front rectangular body has a length of 25 mm from the upper side of the power feeding part.
  • the length was 90 mm (this 90 mm includes the length of the lower side of the feeding portion). Based on the above antenna element, this was designated as Example 1. And, what made the whole area of the above-mentioned rectangular body a solid coating area was designated as Example 2. In Examples 1 and 2, there was no significant difference in reception sensitivity in the frequency band of 470 MHz to 710 MHz.
  • the vertical side of the rectangular earth-side antenna element 12 (the visible light shielding region 3 and the see-through region 22) having a structure in which the occupation ratio between the power feeding unit 10 a and the solid coating region 121 is 100%.
  • Example 3 is an example in which the length of the side perpendicular to the boundary is 25 mm
  • Example 4 is an example in which the length is 5 mm.
  • the lower side of the rectangular earth-side element 12 (the side on the side close to the boundary among the sides parallel to the boundary between the visible light shielding region 3 and the transparent region 22) The position of was the same. That is, in the second, third, and fourth embodiments, the ratio of the ground-side antenna element 12 disposed in the central region 32 is in the relationship of second embodiment> third embodiment> fourth embodiment.
  • FIG. 7 shows the reception sensitivity of the antenna elements of Examples 2, 3, and 4 in the frequency band of 70 MHz to 710 MHz. From this, it can be seen that the larger the area of the ground side element 12, the better the reception sensitivity.
  • the ground side element 12 has a rectangular structure, when receiving radio waves in the frequency band of 470 MHz to 710 MHz, the area of the rectangular structure is 1500 mm 2 to 4000 mm 2 , and further 2000 mm. It can be seen that 2 to 3500 mm 2 is preferable.
  • the present invention can use the windshield as an antenna element when a vehicle user decides to use a windshield installed as a fixed window of the vehicle as a radio wave receiver. Therefore, when a television, radio, ETC, or car navigation system is attached at a vehicle dealer or a car accessories dealer, the windshield can be used as a radio wave receiver for these devices.
  • Windshield 2 Glass plate 3: Visible light shielding area 4: Bonding unit 5: Body flange 6: Interior wall 7: Space between the central area 32 and the interior wall 6 8: Connector 9: Wiring 10: Antenna element 10h: Feeding part of the core side antenna element 10a: Feeding part of the ground side antenna element 11: Core side antenna element 12: Ground side antenna element 121: Solid area 13: Film affixed to the glass plate 2

Abstract

The present invention provides a windshield equipped with a glass antenna element that replaces a film antenna. A windshield (1) according to an embodiment of the present invention is equipped with: a glass plate (2); a belt-shaped visible light blocking region (3) formed in a peripheral edge part of the windshield (1); a joining structure part formed by a bonding unit (4) that joins a side region (31) on an end surface (21) side of the glass plate (2) and a body flange (5)in the visible light blocking region (3); and a glass antenna element formed on the visible light blocking region (3), wherein the joining structure part, and a central region (32) between a side region (33) on the side opposite to the side region (31) and the side region (31) in the visible light blocking region (3) are covered with the interior wall (6), and the antenna element is disposed on at least the central region (32).

Description

ガラスアンテナエレメントを備えるウィンドシールドWindshield with glass antenna element
　本発明は、車両の固定窓として設置されたウィンドシールドを後付け用のアンテナフィルムを用いないでアンテナエレメントとして活用せしめる技術に関する。 The present invention relates to a technique for utilizing a windshield installed as a fixed window of a vehicle as an antenna element without using an antenna film for retrofitting.
　車両に組み込まれている各種の機器や装置には、カーメーカー純正オプションや、ディーラーオプションのように、車両の購入者の意思に応じて、車両の販売店や工場で取り付けられるものや、カー用品の販売店等で取り付けられるものがある。地上波デジタル放送波、ＧＰＳ、ＤＡＢなどの電波を受信する電波受信装置も、車両の販売店で取り付けられるものや、カー用品の販売店等で取り付けられるものがある。このような後付けで、前記電波受信装置が車両に取り付けられることとなった場合、特許文献１、２などに示されるように、ガラスアンテナエレメントが形成されたプラスチックフィルムが、ウィンドシールドの視認できる範囲内に貼付されることになる。前記ウィンドシールドは、車両の固定窓として設置されたものとなっているので、貼付けの場合、前記ガラスアンテナエレメントは、図４、図５に示すようにアンテナエレメントの全てが視認できる状態とならざるを得ない。 Various types of equipment and devices built into the vehicle, such as genuine car manufacturer options and dealer options, can be installed at the vehicle dealer or factory according to the intention of the vehicle purchaser, There are some that are installed at stores. Radio wave receiving devices that receive radio waves such as terrestrial digital broadcast waves, GPS, and DAB are also installed at vehicle dealers and at car accessory dealers. In such a retrofit, when the radio wave receiver is attached to a vehicle, as shown in Patent Documents 1 and 2, the plastic film on which the glass antenna element is formed is within a range where the windshield can be visually recognized. It will be affixed inside. Since the windshield is installed as a fixed window of the vehicle, in the case of pasting, the glass antenna element does not have to be in a state where all the antenna elements are visible as shown in FIGS. I do not get.
　他方で、前述のような後付けではなく、電波受信装置が、標準品として、車両が設置される場合がある。この場合、アンテナエレメントと、該アンテナエレメントを機器と接合するためのコネクターとが形成されたガラスアッセンブリーが車両に設置される。この時、該コネクターが接合されるアンテナエレメントの給電部は、前記車両の、トリムと呼ばれる内装壁に覆われる位置となるように設計される。そのため、必然的に、該アンテナエレメントのほとんどは、黒色セラミックの遮蔽膜などからなる帯状の可視光遮蔽領域上に配置されることになる。このような構造では、特許文献３で言及されているように、窓ガラスの車外側から見ると、アンテナエレメントの全部又は一部が車外から見えなくなり、デザインの優れた窓ガラスとなる。 On the other hand, instead of retrofitting as described above, a vehicle may be installed as a standard product with a radio wave receiver. In this case, a glass assembly in which an antenna element and a connector for joining the antenna element to a device are formed is installed in the vehicle. At this time, the feeding portion of the antenna element to which the connector is joined is designed to be a position covered with an interior wall called a trim of the vehicle. Therefore, inevitably, most of the antenna elements are arranged on a band-shaped visible light shielding region made of a black ceramic shielding film or the like. In such a structure, as mentioned in Patent Document 3, when viewed from the outside of the window glass, all or part of the antenna element is not visible from the outside of the vehicle, and the window glass has an excellent design.
特開２００５－１０９８１１号公報JP 2005-109811 A 特開２００７－１０４１４２号公報JP 2007-104142 A 特開２０１７－００５７１１公報JP 2017-005711 A
　ウィンドシールドが車両の固定窓として設置された後に前記電波受信装置が車両に取り付けられる場合（これを、「後付け方式」とする）以下のような問題がある。従来のように、車両の固定窓として設置されたウィンドシールドにフィルム状のアンテナエレメントを貼り付ける方式では、コネクターと、ガラスアンテナエレメントの全体とが視認される状態となる。そのため、美観の観点からは、前記アンテナエレメントは単純で、小さなものとせざるを得ない。その場合、前記アンテナエレメントの受信感度を向上させることは難しくなる。後付け方式で前記電波受信装置が車両に取り付けられる場合においては、前記アンテナエレメントの受信感度に係るアンテナエレメントの設計自由度と、前記アンテナエレメントに係る美観は、トレードオフの関係にあるとも言える。 When the radio wave receiver is attached to the vehicle after the windshield is installed as a fixed window of the vehicle (this is referred to as “retrofitting method”), there are the following problems. In the conventional method of attaching a film-like antenna element to a windshield installed as a fixed window of a vehicle, the connector and the entire glass antenna element are visually recognized. Therefore, from the aesthetic point of view, the antenna element must be simple and small. In that case, it is difficult to improve the reception sensitivity of the antenna element. When the radio wave receiver is attached to a vehicle in a retrofitting manner, it can be said that there is a trade-off between the design freedom of the antenna element related to the reception sensitivity of the antenna element and the aesthetics related to the antenna element.
　本発明は、後付け方式を伴う、ガラスアンテナエレメントを備えるウィンドシールドにおいて、前記アンテナエレメントの受信感度に係るアンテナエレメントの設計自由度を大きくし、前記アンテナエレメントに係る美観を共に改善しやすい、ウィンドシールドを提供することを課題とする。 The present invention relates to a windshield including a glass antenna element with a retrofitting method, which increases the design freedom of the antenna element related to the reception sensitivity of the antenna element and easily improves the aesthetics related to the antenna element. It is an issue to provide.
　本発明のウィンドシールド（１）は、室内空間に内装壁（６）を備える車両の固定窓として設置されたウィンドシールド（１）であって、前記ウィンドシールド（１）は、
　ガラス板（２）と、
　前記ウィンドシールド（１）の周縁部に形成され、前記ガラス板（２）の端面（２１）側の第１側部領域（３１）と、前記側部領域（３１）とは反対側の第２側部領域（３３）と、前記第１、第２側部領域（３１、３３）間の中央領域（３２）とを有する帯状の可視光遮蔽領域（３）と、
　前記第１側部領域（３１）と、ボディフランジ（５）とを接合する接着ユニット（４）で形成された接合構造部と、
　前記可視光遮蔽領域（３）上に形成されたガラスアンテナエレメントと、を備え、
　前記接合構造部と前記中央領域（３２）とは、前記内装壁（６）に覆われており、
　前記ガラスアンテナエレメントは、導電性材料からなる給電部（１０）と、前記給電部（１０）と結ばれた導電性材料からなるアンテナエレメントと、を備え、
　前記給電部（１０）が、前記第２側部領域（３３）に配置され、
　前記アンテナエレメントが、少なくとも前記中央領域（３２）上に配置されている、ものである。 The windshield (1) of the present invention is a windshield (1) installed as a fixed window of a vehicle having an interior wall (6) in an indoor space, and the windshield (1)
A glass plate (2);
A first side region (31) on the end surface (21) side of the glass plate (2) and a second side opposite to the side region (31) are formed at the peripheral portion of the windshield (1). A band-shaped visible light shielding region (3) having a side region (33) and a central region (32) between the first and second side regions (31, 33);
A joining structure formed by an adhesive unit (4) for joining the first side region (31) and the body flange (5);
A glass antenna element formed on the visible light shielding region (3),
The joint structure and the central region (32) are covered by the interior wall (6),
The glass antenna element includes a power feeding part (10) made of a conductive material, and an antenna element made of a conductive material tied to the power feeding part (10),
The feeding part (10) is arranged in the second side region (33);
The antenna element is arranged at least on the central region (32).
　前記給電部（１０）は、前記側部領域（３３）にあるので、前記ウィンドシールド（１）が車両の固定窓として設置された状態で、コネクター（８）を取り付けることができる。そして、該コネクター（８）を介して、前記ウィンドシールド（１）を電波受信装置の構成要素とすることができる。また、前記アンテナエレメントは、前記側部領域（３３）だけでなく、前記中央領域（３２）にも配置されている。従来の後付け方式では、車両に窓として固定されたウィンドシールドにフィルムアンテナなどのアンテナエレメントが取り付けられるので、前記中央領域（３２）が活用されずにいた。本発明は、前記中央領域（３２）を活用するという新たな着想でなされたので、前記アンテナエレメントの受信感度に係るアンテナエレメントの設計自由度を高くし、前記アンテナエレメントに係る美観を改善しやすいものにすることができる。 Since the power feeding section (10) is in the side area (33), the connector (8) can be attached in a state where the windshield (1) is installed as a fixed window of the vehicle. And the said windshield (1) can be made into the component of an electromagnetic wave receiver through this connector (8). The antenna element is disposed not only in the side region (33) but also in the central region (32). In the conventional retrofitting method, an antenna element such as a film antenna is attached to a windshield fixed as a window on the vehicle, so that the central region (32) is not utilized. Since the present invention was made with the new idea of utilizing the central region (32), the design flexibility of the antenna element related to the reception sensitivity of the antenna element is increased, and the aesthetics related to the antenna element can be easily improved. Can be a thing.
　また本発明は、電波受信装置の使用方法であって、
　前記ウィンドシールド（１）を準備する工程（Ａ）と、
　前記給電部（１０）とコネクター（８）とを接合し、前記ガラスアンテナエレメントと、
　前記内装壁（６）と前記中央領域（３２）との間の空間（７）を通る配線（９）と、を電気的に接合させる工程（Ｂ）と、を含む、ものである。 The present invention is also a method of using a radio wave receiving device,
Preparing the windshield (1) (A);
Bonding the feeding part (10) and the connector (8), the glass antenna element,
And a step (B) of electrically joining the wiring (9) passing through the space (7) between the interior wall (6) and the central region (32).
　ウィンドシールドが車両の固定窓として設置された後に前記電波受信装置が車両に取り付けられる、後付け方式において、本発明のウィンドシールドは、前記アンテナエレメントの受信感度に係るアンテナエレメントの設計自由度を大きくし、かつ前記アンテナエレメントに係る美観を改善しやすい、という効果を有する。 In a retrofitting method in which the radio wave receiver is attached to a vehicle after the windshield is installed as a fixed window of the vehicle, the windshield of the present invention increases the degree of design freedom of the antenna element related to the reception sensitivity of the antenna element. And it has the effect that it is easy to improve the beauty | look which concerns on the said antenna element.
本発明のウィンドシールド（１）の要部の断面を概略的に示す図である。It is a figure which shows roughly the cross section of the principal part of the windshield (1) of this invention. 本発明のウィンドシールド（１）を室外側からみたときの要部を概略的に説明する図である。It is a figure which illustrates roughly the principal part when the windshield (1) of this invention is seen from the outdoor side. 本発明のウィンドシールド（１）を室内側からみたときの要部を概略的に説明する図である。It is a figure which illustrates roughly the principal part when the windshield (1) of this invention is seen from the indoor side. 従来例のウィンドシールド（１’）を室外側からみたときの要部を概略的に説明する図である。It is a figure which illustrates schematically the principal part when the windshield (1 ') of a prior art example is seen from the outdoor side. 従来例のウィンドシールド（１’）を室内側からみたときの要部を概略的に説明する図である。It is a figure which illustrates schematically the principal part when the windshield (1 ') of a prior art example is seen from the indoor side. ガラスアンテナエレメントが占める面積領域の定義方法を説明する図である。It is a figure explaining the definition method of the area area which a glass antenna element occupies. 本発明の実施例のアンテナ受信感度を示すグラフである。It is a graph which shows the antenna receiving sensitivity of the Example of this invention. ガラスアンテナエレメントの全てが、可視光遮蔽領域３上に配置された場合の態様において、ウィンドシールド（１）を室内側からみたときの要部を概略的に説明する図である。It is a figure which illustrates roughly the principal part when the windshield (1) is seen from the room inner side in the aspect in case all the glass antenna elements are arrange | positioned on the visible light shielding area | region 3. FIG.
　本発明を、図面を用いて詳細に説明する。図１は、本発明のウィンドシールド１の要部の断面を概略的に示す図、図２は、本発明のウィンドシールド１を室外側からみたときの要部を概略的に説明する図、図３は本発明のウィンドシールド１を室内側からみたときの要部を概略的に説明する図である。また、図４は、従来例のウィンドシールド１’を室外側からみたときの要部を概略的に説明する図、図５は、従来例のウィンドシールド１’を室内側からみたときの要部を概略的に説明する図である。 The present invention will be described in detail with reference to the drawings. FIG. 1 is a diagram schematically showing a cross section of the main part of the windshield 1 of the present invention, and FIG. 2 is a diagram schematically illustrating the main part when the windshield 1 of the present invention is viewed from the outdoor side. 3 is a diagram schematically illustrating a main part of the windshield 1 according to the present invention when viewed from the indoor side. FIG. 4 is a diagram schematically illustrating a main part of the conventional windshield 1 ′ viewed from the outdoor side, and FIG. 5 illustrates a main part of the conventional windshield 1 ′ viewed from the indoor side. FIG.
　本発明のウィンドシールド１の典型例は、図１、２、３に示される。前記ウィンドシールド１は、室内空間に内装壁６を備える車両の固定窓として設置されたウィンドシールド１であって、前記ウィンドシールド１は、ガラス板２と、前記ウィンドシールド１の周縁部に形成された帯状の可視光遮蔽領域３と、前記可視光遮蔽領域３において、その前記ガラス板２の端面２１側の側部領域３１と、ボディフランジ５とを接合する接着ユニット４で形成された接合構造部と、前記可視光遮蔽領域３上に形成されたガラスアンテナエレメントと、を備え、前記接合構造部と、前記可視光遮蔽領域３における前記側部領域３１とは反対側の側部領域３３と前記側部領域３１との間の中央領域３２とは、前記内装壁６に覆われており、前記ガラスアンテナエレメントは、導電性材料からなる給電部１０と、前記給電部１０と結ばれた導電性材料からなるアンテナエレメントと、を備え、前記給電部１０が、前記側部領域３３に配置され、前記アンテナエレメントが、少なくとも前記中央領域３２上に配置されている、
ものである。 A typical example of the windshield 1 of the present invention is shown in FIGS. The windshield 1 is a windshield 1 installed as a fixed window of a vehicle having an interior wall 6 in an indoor space. The windshield 1 is formed on a glass plate 2 and a peripheral portion of the windshield 1. A band-shaped visible light shielding region 3 and a joining structure formed by the adhesive unit 4 that joins the side region 31 on the end face 21 side of the glass plate 2 and the body flange 5 in the visible light shielding region 3. And a glass antenna element formed on the visible light shielding region 3, the junction structure, and a side region 33 opposite to the side region 31 in the visible light shielding region 3. A central region 32 between the side region 31 and the side wall region 31 is covered with the interior wall 6, and the glass antenna element includes a power feeding unit 10 made of a conductive material and the power feeding unit 1. And a antenna element made of a conductive material connected with the power supply unit 10, the disposed side region 33, the antenna element is disposed on at least the central region 32,
Is.
　前記可視光遮蔽領域３は、黒色セラミックからなるものが好適である。前記可視光遮蔽領域３は、典型的には、ペースト状態の、黒色セラミックなどのカラーセラミックがガラス板２の周縁部にスクリーン印刷などで帯状に塗布され、ガラス板２が熱処理によって曲げ加工される際に形成される。前記ウィンドシールド１は、車両に取り付けられるときに、前記ボディフランジ５と接着される。そのため、前記接着ユニット４で形成された接合構造部などがガラス板２の周縁部に設けられる。前記ウィンドシールド１は、その周縁部に前記可視光遮蔽領域３を備えることで、前記ウィンドシールド１を室外側からみたときに、前記接合構造部が視認されないものとすることができる。 The visible light shielding region 3 is preferably made of black ceramic. In the visible light shielding region 3, typically, a paste-like color ceramic such as black ceramic is applied to the peripheral edge of the glass plate 2 by screen printing or the like, and the glass plate 2 is bent by heat treatment. Formed when. The windshield 1 is bonded to the body flange 5 when attached to the vehicle. Therefore, the joining structure part etc. which were formed with the said adhesive unit 4 are provided in the peripheral part of the glass plate 2. FIG. The said windshield 1 shall be provided with the said visible light shielding area | region 3 in the peripheral part, and when the said windshield 1 is seen from the outdoor side, the said junction structure part shall not be visually recognized.
　前記ウィンドシールド１を電波受信装置として作用させるためには、前記給電部１０に配線９を備えるコネクター８を接合させ、前記コネクター８を介して、配線９と前記ガラスアンテナエレメントとを電気的に接合させる。前記配線９は、前記中央領域３２と内装壁６と間の空間７内を通って、接地面や、アンプ、ラジオ受信機、テレビ受信機、その他通信機器などと接合される（これらについては、図示省略）。前記コネクター８としては、ばね式金属製導通部と、該金属製導通部を覆うプラスチック等からなる枠体とを備える、スプリングコネクターが好適に使用される。前記ばね式金属製導通部を前記給電部１０に接触させて前記ばね式金属導通部を圧縮し、その状態にて、前記枠体を両面テープや、接着剤などで前記ウィンドシールド１に固定することで、前記コネクター８と前記給電部１０との接合を行うことができる。 In order for the windshield 1 to act as a radio wave receiver, a connector 8 having a wiring 9 is joined to the power supply unit 10, and the wiring 9 and the glass antenna element are electrically joined via the connector 8. Let The wiring 9 passes through the space 7 between the central region 32 and the interior wall 6 and is joined to a ground plane, an amplifier, a radio receiver, a television receiver, and other communication devices (for these, (Not shown). As the connector 8, a spring connector including a spring-type metal conducting portion and a frame made of plastic or the like that covers the metal conducting portion is preferably used. The spring-type metal conductive portion is brought into contact with the power supply portion 10 to compress the spring-type metal conductive portion, and in this state, the frame body is fixed to the windshield 1 with a double-sided tape or an adhesive. Thus, the connector 8 and the power feeding unit 10 can be joined.
　前記電波受信装置を、車両に設置し、作用させるかどうかは、車両の使用者が決める商売形式である場合を考える。その場合、業者は車両の使用者と相談して前記電波受信装置の使用意思の有無が確認された後、業者は、前記給電部１０に配線９を備えるコネクター８を接合させ、前記コネクター８を介して、配線９と前記ガラスアンテナエレメントとを電気的に接合させることが好ましい。 Whether or not the radio wave receiving device is installed and operated in a vehicle is considered to be a business format determined by the vehicle user. In this case, after confirming whether or not the radio wave receiving apparatus is intended to be used by the contractor consulting with the vehicle user, the contractor joins the connector 8 including the wiring 9 to the power supply unit 10, and connects the connector 8. The wiring 9 and the glass antenna element are preferably joined electrically.
　図１、２、３の典型例では、前記ガラスアンテナエレメントは、芯線側アンテナエレメント１１と、アース側アンテナエレメント１２とを備えるものである。前記芯線側アンテナエレメント１１は、給電部１０ｈから延伸したもの、前記アース側アンテナエレメント１２は給電部１０ａから延伸したものとなっている。 1, 2 and 3, the glass antenna element includes a core wire side antenna element 11 and a ground side antenna element 12. The core wire side antenna element 11 extends from the power feeding unit 10h, and the ground side antenna element 12 extends from the power feeding unit 10a.
　本発明のウィンドシールド１は、図３で示すように、アンテナエレメントが、中央領域３２上にも配置される。中央領域３２に配置されたアンテナエレメントは、内装壁６によって、車両の使用者から視認されないので、ウィンドシールド１の美観に影響を与えることなく、その領域でのアンテナエレメントの形状や大きさは、電波受信感度向上を優先して設計される。 In the windshield 1 of the present invention, as shown in FIG. 3, the antenna element is also disposed on the central region 32. Since the antenna element arranged in the central region 32 is not visually recognized by the user of the vehicle by the interior wall 6, the shape and size of the antenna element in that region without affecting the aesthetic appearance of the windshield 1, Designed with priority on improving radio wave reception sensitivity.
　前記アンテナエレメントは、中央領域３２にも配置されるので、前記ガラスアンテナエレメントは、内装壁６で覆われる領域を備えることになる。そして、前記中央領域３２上に配置されているアンテナエレメントは、前記側部領域３３上に配置されているアンテナエレメントを介して前記給電部１０と接合していることが好ましい。このような構造とすることで、給電部１０を、前記側部領域３３と前記中央領域３２との境界からずらして配置でき、結果、給電部１０へのコネクター８の取り付けをしやすいものにすることができる。さらには、前記ガラスアンテナエレメントの受信感度向上の観点から、前記アンテナエレメントは、前記ガラス板２の室内側の透視領域２２上に配置されてもよい。 Since the antenna element is also arranged in the central region 32, the glass antenna element has a region covered with the interior wall 6. The antenna element disposed on the central region 32 is preferably joined to the power feeding unit 10 via the antenna element disposed on the side region 33. By adopting such a structure, the power feeding unit 10 can be arranged shifted from the boundary between the side region 33 and the central region 32, and as a result, the connector 8 can be easily attached to the power feeding unit 10. be able to. Furthermore, from the viewpoint of improving the reception sensitivity of the glass antenna element, the antenna element may be disposed on the see-through region 22 on the indoor side of the glass plate 2.
　次に前記ガラスアンテナの大きさについて説明する。前記ガラスアンテナエレメントの形成領域に関し、前記アンテナエレメントを形成する給電部、アンテナエレメントにて最外殻にある先端部、頂点部、又は円弧部の各部を結びできあがる面積の内、最大の面積を形成するものを、ガラスアンテナエレメントの領域（Ｂ）と定義する。その領域（Ｂ）内で、内装壁で覆われる領域が領域（Ａ）となる。例えば、図３に示されたガラスアンテナエレメントの場合、領域（Ｂ）は、図６で示すように点線で囲われた領域となる。また、図５では、領域（Ａ）は、点線で囲われた領域中、破線よりも上側の領域ということになる。 Next, the size of the glass antenna will be described. Concerning the formation area of the glass antenna element, the largest area among the areas that can be formed by connecting the power feeding part that forms the antenna element, the tip part at the outermost shell, the apex part, or the arc part in the antenna element is formed. This is defined as the area (B) of the glass antenna element. Within the region (B), the region covered with the interior wall is the region (A). For example, in the case of the glass antenna element shown in FIG. 3, the region (B) is a region surrounded by a dotted line as shown in FIG. In FIG. 5, the region (A) is a region above the broken line in the region surrounded by the dotted line.
　前記領域（Ａ）の割合を高くするほどウィンドシールド１は美観的に好ましいものとなるが、割合が高すぎると、ボディフランジ５に近くなるアンテナエレメントの量が増える。これらを考慮すると、領域（Ａ）の領域（Ｂ）に対する面積の割合は、領域（Ａ）／領域（Ｂ）において、１５％～３０％、好ましくは２０％～２５％とするとよい。また、前記ボディフランジ５からの電気的な影響を考慮し、前記アンテナエレメントは、ボディフランジと面している前記側部領域（３１）に配置されていない、ものとしてもよい。また、ボディフランジ５からの電気的な影響を考慮するという観点から、前記アンテナエレメントにおいて、前記側部領域（３１）と最近接する部位と、前記側部領域（３１）との最短距離を、５ｍｍ～３５ｍｍとしてもよい。 As the ratio of the region (A) is increased, the windshield 1 is aesthetically preferable. However, if the ratio is too high, the amount of antenna elements close to the body flange 5 increases. Considering these, the ratio of the area of the region (A) to the region (B) is 15% to 30%, preferably 20% to 25% in the region (A) / region (B). In consideration of the electrical influence from the body flange 5, the antenna element may not be arranged in the side region (31) facing the body flange. Further, from the viewpoint of considering the electrical influence from the body flange 5, in the antenna element, the shortest distance between the side region (31) and the side region (31) closest to the side region (31) is 5 mm. It may be ˜35 mm.
　図１、２、３の典型例で示されたような、芯線側アンテナエレメント１１と、アース側アンテナエレメント１２と、前記給電部１０ｈから延伸した芯線側アンテナエレメント１１と、給電部１０ａから延伸したアース側アンテナエレメント１２とを備える、ガラスアンテナエレメントは、地上デジタルテレビ放送、ＤＡＢ用の電波受信、ＧＰＳや、５Ｇ通信や、車車間通信等の電波受信などに好適に使用できるものである。 As shown in the typical examples of FIGS. 1, 2, and 3, the core wire side antenna element 11, the ground side antenna element 12, the core wire side antenna element 11 extended from the power supply portion 10h, and the power supply portion 10a are extended. The glass antenna element including the ground side antenna element 12 can be suitably used for terrestrial digital television broadcasting, radio wave reception for DAB, radio wave reception for GPS, 5G communication, vehicle-to-vehicle communication, and the like.
　該ガラスアンテナエレメントにおいて、前記芯線側アンテナエレメント１１は、前記給電部１０ｈから、ボディフランジ５から離隔する方向に延伸する線条を備える、ものとすることが好ましい。このような線条を備えると、芯線側アンテナエレメントで受信された電波が、ボディフランジ５へリークすることを防ぐことができ、アンテナの受信感度を良好なものとすることができる。前記線条は、可視光遮蔽領域３の辺に対して、垂直又は略垂直となるように延伸する直線状のもので、その先端から、前記可視光遮蔽領域３の辺に対して平行又は略平行となるように延伸し、Ｌ字状のものとしてもよい。該線条エレメントの長さは、受信しようとする電波の周波数帯の中心波長のαλ／４（αはガラスの短縮率で、α＝０．７とされる）とすることが好ましい。ボディフランジ５から離隔する方向に延伸する線条は、図２、３の例のように、前記ガラスアンテナエレメントの受信感度向上の観点から、前記アンテナエレメントは、可視光遮蔽領域３上と、前記ガラス板２の室内側の透視領域２２上とに配置されてもよい。その場合でも、本発明の構成によれば、透視領域２２に配置されるエレメントの割合を必要最小限とすることができる。 In the glass antenna element, it is preferable that the core wire side antenna element 11 includes a wire extending in a direction away from the body flange 5 from the power feeding portion 10h. When such a wire is provided, radio waves received by the core wire side antenna element can be prevented from leaking to the body flange 5, and the reception sensitivity of the antenna can be improved. The line is a straight line extending so as to be perpendicular or substantially perpendicular to the side of the visible light shielding region 3, and is parallel or substantially parallel to the side of the visible light shielding region 3 from the tip. It is good also as extending | stretching so that it may become parallel and L-shaped. The length of the filament element is preferably αλ / 4 of the center wavelength of the frequency band of the radio wave to be received (α is the shortening rate of glass, and α = 0.7). From the viewpoint of improving the reception sensitivity of the glass antenna element, the antenna element extending in the direction away from the body flange 5 is formed on the visible light shielding region 3, and The glass plate 2 may be disposed on the see-through region 22 on the indoor side. Even in that case, according to the configuration of the present invention, the ratio of the elements arranged in the fluoroscopic region 22 can be minimized.
　前記アース側アンテナエレメント１２は、前記中央領域３２上にも配置されていることが好ましい。アンテナエレメントの電波の受信感度を良好なものとするために、アース側エレメント１２は、芯線側エレメント１１よりも大きな構造をしていることが好ましい。大きな構造は、より視認されやすいものとなる。アース側エレメント１２が、前記中央領域３２上に配置されることにより、ウィンドシールドとしては、アンテナエレメントの視認領域を小さくできる。 It is preferable that the ground side antenna element 12 is also disposed on the central region 32. The ground side element 12 preferably has a larger structure than the core wire side element 11 in order to improve the radio wave reception sensitivity of the antenna element. Large structures are more visible. By arranging the ground-side element 12 on the central region 32, the viewing area of the antenna element can be reduced as a windshield.
　また、前記アース側エレメント１２が、外観の形状が比較的良好な矩形状の構造からなり、前記構造内に前記導電性材料からなるベタ塗り領域１２１を備えていてもよい。前記矩形状の構造において、給電部１０ａは、前記ベタ塗り領域１２１と一体的な構造となってもよいし、ベタ塗り領域内に含まれるものとしてもよい。地上デジタルテレビ放送の電波として使用できる、例えば、４７０ＭＨｚ～７１０ＭＨｚの周波数帯において、前記ベタ塗り領域１２１の大きさは、受信感度に大きく影響するものではないが、前記ベタ塗り領域１２１の大きさを調整することで、受信感度の微調整を行うことができる。また、アース側エレメント１２が矩形状の構造の場合、４７０ＭＨｚ～７１０ＭＨｚの周波数帯の電波を受信するときには、矩形状の構造の面積は、１５００ｍｍ2～４０００ｍｍ2、さらには２０００ｍｍ2～３５００ｍｍ2とすることが好ましい。 Further, the ground side element 12 may have a rectangular structure with a relatively good appearance and may have a solid-coated region 121 made of the conductive material in the structure. In the rectangular structure, the power supply unit 10a may be integrated with the solid region 121 or may be included in the solid region. For example, in the frequency band of 470 MHz to 710 MHz that can be used as radio waves for terrestrial digital television broadcasting, the size of the solid area 121 does not greatly affect the reception sensitivity. By adjusting, the reception sensitivity can be finely adjusted. When the ground side element 12 has a rectangular structure, when receiving radio waves in a frequency band of 470 MHz to 710 MHz, the area of the rectangular structure is 1500 mm 2 to 4000 mm 2 , and further 2000 mm 2 to 3500 mm 2 . It is preferable.
　図１、２、３の典型例では、前記ガラスアンテナエレメントは、ウィンドシールド１の上辺側領域に形成されているが、前記ガラスアンテナエレメントは、ウィンドシールド１の側辺側領域や下辺側領域に形成されてもよい。 In the typical examples of FIGS. 1, 2, and 3, the glass antenna element is formed in the upper side region of the windshield 1, but the glass antenna element is formed in the side region and the lower side region of the windshield 1. It may be formed.
　次に、前記ガラスアンテナエレメントの全てが、可視光遮蔽領域３上に配置された場合の態様を考える。この構成は、透視領域２２に配置されるエレメントが無いので、ウィンドシールド１の外観向上の観点からは好ましいものとなる。その場合でも、前記芯線側アンテナエレメント１１は、前記給電部１０ｈから、ボディフランジ５から離隔する方向に延伸する線条を備えるものとし、さらには、その線条の先端から前記可視光遮蔽領域３の辺に対して平行又は略平行となるように延伸した、Ｌ字状の線条を備えるものとすることが好ましい。しかしながら、その、ボディフランジ５から離隔する方向に延伸する線条の長さは、該態様では、わずかしかとれないので、芯線側アンテナエレメントで受信された電波が、ボディフランジ５へリークすることを防ぐ、という効果の発生がわずかでなものとなりうる。そのため、前記ウィンドシールド１は、図８に示されるような、アース側アンテナエレメント１２が、芯線側アンテナエレメント１１と、ボディフランジ５の間に延伸する構造を備えるものとすることが好ましい。このようは構造を備えることで、芯線側アンテナエレメントで受信された電波が、ボディフランジ５へリークすることを防ぎやすくできる。 Next, a mode in which all the glass antenna elements are arranged on the visible light shielding region 3 will be considered. This configuration is preferable from the viewpoint of improving the appearance of the windshield 1 because no element is disposed in the see-through region 22. Even in that case, the core wire side antenna element 11 is provided with a wire extending in a direction away from the body flange 5 from the power feeding portion 10h, and further, the visible light shielding region 3 from the tip of the wire. It is preferable to include L-shaped filaments that are stretched so as to be parallel or substantially parallel to the sides. However, since the length of the line extending in the direction away from the body flange 5 can be very small in this aspect, the radio wave received by the core wire side antenna element is leaked to the body flange 5. The effect of preventing can be negligible. Therefore, the windshield 1 preferably has a structure in which the ground side antenna element 12 extends between the core wire side antenna element 11 and the body flange 5 as shown in FIG. By providing such a structure, it is possible to easily prevent radio waves received by the core wire side antenna element from leaking to the body flange 5.
　該態様において、前記アース側アンテナエレメント１２は、前記ボディフランジ５に向かって、延伸する線条を備えるものとしてよい。そして、アース側アンテナエレメント１２は、該線条の先端から、線条エレメントが、芯線側アンテナエレメント１１と、ボディフランジ５の間に、好適にはボディフランジ５の縁と平行となる関係で、延伸する構造を備えるものとしてもよい。前記アンテナエレメントにおいて、前記芯線側アンテナエレメント１１の線条エレメントの長さと、前記アース側アンテナエレメント１２の線条エレメントとの合計長は、インピーダンス調整の観点から、受信しようとする電波の周波数帯の中心波長のαλ（αはガラスの短縮率で、α＝０．７とされる）となるように調整されることが好ましい。その際、その各線条エレメントで発生する電界が相殺しないように、各線条の長さは異なっていることが好ましく、例えば、芯線側アンテナエレメント１１の線条エレメントの長さは、３／４αλ、アース側アンテナエレメント１２の線条エレメントの長さは、１／４αλとしてもよい。 In this aspect, the ground side antenna element 12 may be provided with a line extending toward the body flange 5. The ground side antenna element 12 has a relationship in which the wire element is parallel to the edge of the body flange 5 between the core wire side antenna element 11 and the body flange 5 from the tip of the wire. It is good also as what has the structure to extend | stretch. In the antenna element, the total length of the wire element of the core wire side antenna element 11 and the wire element of the ground side antenna element 12 is the frequency band of the radio wave to be received from the viewpoint of impedance adjustment. The center wavelength is preferably adjusted to be αλ (α is a shortening rate of the glass, and α = 0.7). At that time, it is preferable that the length of each filament is different so that the electric field generated in each filament element does not cancel out. For example, the length of the filament element of the core antenna element 11 is 3 / 4αλ, The length of the wire element of the ground side antenna element 12 may be 1 / 4αλ.
　図８に示されるような、ガラスアンテナエレメントの全てが、可視光遮蔽領域３上に配置された場合の態様は、地上デジタルテレビ放送、ＤＡＢ用の電波受信、ＧＰＳや、５Ｇ通信や、車車間通信等の電波受信などに好適に使用できるものである。また、ガラスアンテナエレメントの全てが、可視光遮蔽領域３上に配置された場合の態様では、そのアンテナエレメントは、ウィンドシールド１の側辺側領域や下辺側領域に形成されてもよい。 As shown in FIG. 8, all of the glass antenna elements are arranged on the visible light shielding area 3 in the form of terrestrial digital television broadcasting, radio wave reception for DAB, GPS, 5G communication, and inter-vehicle distance It can be suitably used for radio wave reception such as communication. Further, in the case where all of the glass antenna elements are arranged on the visible light shielding region 3, the antenna elements may be formed in a side region or a lower region of the windshield 1.
　本発明のウィンドシールド１で使用されるガラス板２は、湾曲した、台形状又は矩形状のものが使用される。ガラス板は、単板ガラス、合せガラスのどちらでもよく、また、ガラス板は、強化ガラス、非強化ガラスのどちらでもよい。前記ガラス板２としては、車両用のガラス板として汎用されている、フロ－ト法で製造された、ＩＳＯ１６２９３－１で規定されているようなソーダ石灰ケイ酸塩ガラスからなるガラス板を使用でき、無色のもの、着色されたものが使用される。 The curved, trapezoidal or rectangular glass plate 2 used in the windshield 1 of the present invention is used. The glass plate may be either single plate glass or laminated glass, and the glass plate may be either tempered glass or non-tempered glass. As the glass plate 2, a glass plate made of soda-lime silicate glass as defined by ISO 16293-1, which is widely used as a glass plate for vehicles, manufactured by the float method can be used. Colorless or colored ones are used.
　前記ウィンドシールド１の周縁部に形成された帯状の可視光遮蔽領域３は、図１のように、ガラス板の室内面側に形成されたものが使用される。前記ガラス板２が合せガラスである場合、前記可視光遮蔽領域３は、図１のように室内面側にあってもよいし、合せガラスの中間膜面や、前記中間膜と面する各ガラス板のいずれかの主面にあってもよい。前記可視光遮蔽領域３は、例えば、黒色顔料などの着色顔料とガラスフリットを有するカラーセラミックペーストをガラス板の周縁部にスクリーン印刷などの方法で帯状に塗布し、ガラスフリットの軟化点近傍で焼成することで得ることができる。 The strip-shaped visible light shielding region 3 formed on the peripheral edge of the windshield 1 is formed on the indoor surface side of the glass plate as shown in FIG. When the glass plate 2 is a laminated glass, the visible light shielding region 3 may be on the indoor surface side as shown in FIG. 1, or an intermediate film surface of the laminated glass or each glass facing the intermediate film. It may be on any main surface of the plate. In the visible light shielding region 3, for example, a color ceramic paste having a color pigment such as a black pigment and a glass frit is applied in a band shape to the peripheral portion of the glass plate by a method such as screen printing, and is fired near the softening point of the glass frit. You can get it.
　前記可視光遮蔽領域３の帯としての幅は、ウィンドシールド１が設置される車両に応じて、例えば、４０ｍｍ～１００ｍｍとしてよい。可視光遮蔽領域３において、前記側部領域３１、前記中央領域３２、前記側部領域３３は、例えば、それぞれ、３５％～５０％、２０％～３５％、残部となるように調整してもよい。 The width of the visible light shielding region 3 as a band may be 40 mm to 100 mm, for example, depending on the vehicle on which the windshield 1 is installed. In the visible light shielding region 3, the side region 31, the central region 32, and the side region 33 may be adjusted to be, for example, 35% to 50%, 20% to 35%, and the remaining part, respectively. Good.
　前記側部領域３１側では、該領域３１と、ボディフランジ５とを接合する接着ユニット４で形成された接合構造部が形成される。前記接着ユニット４には、ポリウレタン系の接着剤などが使用され、領域３１、ボディフランジ５の各界面には、接着剤の各部材との接着を促進するプライマーが使用されてもよい。前記ボディフランジ５は、鋼板等の金属かなるものが使用され、その厚みは、２ｍｍ～５ｍｍのものが好適に使用される。前記接合構造部と、前記可視光遮蔽領域３の、前記側部領域３１とは反対側の側部領域３３と前記側部領域３１との間の中央領域３２とを覆う内装壁６には、厚さ２ｍｍ～５ｍｍ程度のウレタン素材等からなるものが使用される。また、前記ガラスアンテナエレメントは、銀粒子とガラスフリットとを有する銀ペーストをスクリーン印刷などの方法で所望のパターンに塗布し、ガラスフリットの軟化点近傍で焼成することで得ることができる。 On the side region 31 side, a joining structure portion formed by the adhesive unit 4 that joins the region 31 and the body flange 5 is formed. A polyurethane-based adhesive or the like may be used for the adhesive unit 4, and a primer that promotes adhesion with each member of the adhesive may be used at each interface between the region 31 and the body flange 5. The body flange 5 is made of a metal such as a steel plate, and a thickness of 2 to 5 mm is preferably used. In the interior wall 6 that covers the joint structure portion and the side region 33 opposite to the side region 31 of the visible light shielding region 3 and the central region 32 between the side regions 31, A material made of a urethane material having a thickness of about 2 mm to 5 mm is used. The glass antenna element can be obtained by applying a silver paste having silver particles and glass frit to a desired pattern by a method such as screen printing and firing near the softening point of the glass frit.
　本発明は、車両の固定窓として設置されたウィンドシールドを電波受信装置として活用しようと車両の使用者が決定したときに、前記ウィンドシールドをアンテナエレメントとして活用せしめることができる。 The present invention can use the windshield as an antenna element when a vehicle user decides to use a windshield installed as a fixed window of the vehicle as a radio wave receiver.
　次に、本発明のウィンドシールド１の効果を説明するため、従来のウィンドシールドの例を説明する。図４、５で示されたウィンドシールド１’は、従来のウィンドシールドの典型例で、地上波デジタル放送の電波を受信するためのアンテナとして利用されているものである。該ガラスアンテナエレメントは芯線側アンテナエレメント１１と、アース側アンテナエレメント１２とを備えるものである。前記芯線側アンテナエレメント１１は、給電部１０ｈから延伸したもの、前記アース側アンテナエレメント１２は給電部１０ａから延伸したものとなっている。 Next, in order to explain the effect of the windshield 1 of the present invention, an example of a conventional windshield will be described. The windshield 1 'shown in FIGS. 4 and 5 is a typical example of a conventional windshield, and is used as an antenna for receiving radio waves of terrestrial digital broadcasting. The glass antenna element includes a core wire side antenna element 11 and a ground side antenna element 12. The core wire side antenna element 11 extends from the power feeding unit 10h, and the ground side antenna element 12 extends from the power feeding unit 10a.
　従来のウィンドシールド１’では、可視光遮蔽領域３の側部領域３１と、中央領域３２とが内装壁６で覆われた状態で、ガラスアンテナエレメントが形成されたフィルム１３が貼付される。従来例では、図５で示されるようにフィルム１３は、貼付可能な領域、すなわち、ウィンドシールド１’の内装壁６で覆われていない領域に、貼付されることになる。そのため、ガラスアンテナエレメントのアンテナエレメントを中央領域３２に配置することが難しいものとなる。アンテナエレメント１１、１２の全ては、室内側からは車両の使用者に視認される状態となる（室外側からは図４に示されるように、透視領域２２の領域のアンテナエレメント、フィルム１３が視認される）ので、美観の観点からは、前記アンテナエレメントは単純で、小さなものとせざるを得ない。そのため、従来例では、前記アンテナエレメントの受信感度を向上させることが難しいものとなる。 In the conventional windshield 1 ′, the film 13 on which the glass antenna element is formed is stuck in a state where the side region 31 and the central region 32 of the visible light shielding region 3 are covered with the interior wall 6. In the conventional example, as shown in FIG. 5, the film 13 is attached to an area where the film 13 can be applied, that is, an area not covered by the interior wall 6 of the windshield 1 ′. Therefore, it becomes difficult to arrange the antenna element of the glass antenna element in the central region 32. All of the antenna elements 11 and 12 are visible to the vehicle user from the indoor side (from the outdoor side, the antenna element and film 13 in the transparent region 22 are visible as shown in FIG. 4. Therefore, from an aesthetic point of view, the antenna element must be simple and small. Therefore, in the conventional example, it is difficult to improve the reception sensitivity of the antenna element.
　図３で示されるような、アンテナエレメントと、周縁部に４５ｍｍ幅の黒色の可視光遮蔽領域３とが形成されたガラス板２を準備した。前記可視光領域３において、側部領域３１を２５ｍｍ幅、中央領域３２を１５ｍｍ幅、側部領域３３を５ｍｍ幅と設定した。前記側部領域３１がボディフランジ５と対面し、前記側部領域３１と、前記中央領域３２とが内装壁６で覆われる領域となる。 A glass plate 2 having an antenna element and a black visible light shielding region 3 having a width of 45 mm at the peripheral edge as shown in FIG. 3 was prepared. In the visible light region 3, the side region 31 was set to a width of 25 mm, the central region 32 was set to a width of 15 mm, and the side region 33 was set to a width of 5 mm. The side region 31 faces the body flange 5, and the side region 31 and the central region 32 are regions covered with the interior wall 6.
　前記アンテナエレメントにおいて、芯線側アンテナエレメントの給電部１０ｈ、アース側アンテナエレメント１０ａは、前記側部領域３３内に、水平（図３において、領域３の辺の方向を水平とする）の位置関係で配置される。各給電部の形状は正方形で、ともに面積は、２５ｍｍ2とした。給電部１０ａ、１０ｈ間の距離を、４ｍｍとし、図３で見て、各給電部の上辺と上辺、下辺と下辺とが水平の位置関係とし、さらに各側辺が平行の位置関係となるようにした。また、各給電部の下辺を可視光遮蔽領域３と透視領域２２との境界から、１５ｍｍの位置となるようにした。 In the antenna element, the feeding portion 10h of the core wire side antenna element and the ground side antenna element 10a are positioned horizontally in the side region 33 (in FIG. 3, the direction of the side of the region 3 is horizontal). Be placed. The shape of each power feeding part was a square, and the area was 25 mm 2 . The distance between the power supply units 10a and 10h is 4 mm, and as shown in FIG. 3, the upper side and the upper side of each power supply unit, the lower side and the lower side are in a horizontal positional relationship, and the side sides are in a parallel positional relationship. I made it. In addition, the lower side of each power feeding unit was set to a position of 15 mm from the boundary between the visible light shielding region 3 and the transparent region 22.
　芯線側アンテナエレメント１１は、前記給電部１０ｈから、図３でみて、下方側に延伸する線条と、その線条の先端から図３でみて左側に延伸する線条とからなり、下方側に延伸する線条は、２０ｍｍ、左側に延伸する線条の長さを７５ｍｍとした。 The core wire side antenna element 11 is composed of a wire extending downward from the feeding portion 10h as viewed in FIG. 3 and a wire extending from the tip of the wire to the left as viewed in FIG. The filament to be stretched was 20 mm, and the length of the filament to be stretched to the left was 75 mm.
　アース側アンテナエレメント１２は、図３に示す矩形状体とし、前記給電部１０ａを前記矩形状体の内部に含むような構造とした。前記給電部１０ａは、図３でみて、前記矩形状体の左辺と下辺に接し、前矩形状体の左辺は、前記給電部の上辺から、２５ｍｍの長さとし、前記矩形状体の水平方向の長さを９０ｍｍとした（この９０ｍｍには、前記給電部の下辺の長さ分も含まれる）。以上のアンテナエレメントを基本として、これを実施例１とした。そして、前記矩形状体の全域をベタ塗り領域としたものを、実施例２とした。実施例１、２では、４７０ＭＨｚ～７１０ＭＨｚの周波数帯での受信感度に大きな差は無かった。 The ground-side antenna element 12 has a rectangular shape shown in FIG. 3, and has a structure that includes the feeding portion 10a inside the rectangular shape. The power feeding part 10a is in contact with the left and lower sides of the rectangular body as seen in FIG. 3, and the left side of the front rectangular body has a length of 25 mm from the upper side of the power feeding part. The length was 90 mm (this 90 mm includes the length of the lower side of the feeding portion). Based on the above antenna element, this was designated as Example 1. And, what made the whole area of the above-mentioned rectangular body a solid coating area was designated as Example 2. In Examples 1 and 2, there was no significant difference in reception sensitivity in the frequency band of 470 MHz to 710 MHz.
　次に実施例２をベースとして、給電部１０ａとベタ塗り領域１２１との占有率が１００％となる構造の、矩形状のアース側アンテナエレメント１２の縦辺（可視光遮蔽領域３と透視領域２２との境界に対して垂直関係にある辺）の長さを、２５ｍｍとした例を実施例３、５ｍｍとした例を実施例４とした。実施例２、３、４において、矩形状のアース側エレメント１２の下辺（可視光遮蔽領域３と透視領域２２との境界に対して平行関係にある辺中、該境界に近接する側の辺）の位置は、同じとされた。すなわち、前記実施例２、３、４において、中央領域３２に配置されるアース側アンテナエレメント１２の割合は、実施例２＞実施例３＞実施例４の関係となる。 Next, based on the second embodiment, the vertical side of the rectangular earth-side antenna element 12 (the visible light shielding region 3 and the see-through region 22) having a structure in which the occupation ratio between the power feeding unit 10 a and the solid coating region 121 is 100%. Example 3 is an example in which the length of the side perpendicular to the boundary is 25 mm, and Example 4 is an example in which the length is 5 mm. In Examples 2, 3, and 4, the lower side of the rectangular earth-side element 12 (the side on the side close to the boundary among the sides parallel to the boundary between the visible light shielding region 3 and the transparent region 22) The position of was the same. That is, in the second, third, and fourth embodiments, the ratio of the ground-side antenna element 12 disposed in the central region 32 is in the relationship of second embodiment> third embodiment> fourth embodiment.
　図７に実施例２、３、４のアンテナエレメントの７０ＭＨｚ～７１０ＭＨｚの周波数帯での受信感度が示される。これより、アース側エレメント１２の面積が大きいほど、受信感度が良くなることがわかる。 FIG. 7 shows the reception sensitivity of the antenna elements of Examples 2, 3, and 4 in the frequency band of 70 MHz to 710 MHz. From this, it can be seen that the larger the area of the ground side element 12, the better the reception sensitivity.
　本発明では、アース側エレメント１２の面積を大きくしても、そのエレメントの多くを内装壁６に隠せる位置に配置できるため、電波の受信感度と、外観とのバランスが良いウィンドシールドを提供することができることがわかる。また、この結果を考慮すると、アース側エレメント１２が矩形状の構造の場合、４７０ＭＨｚ～７１０ＭＨｚの周波数帯の電波を受信するときには、矩形状の構造の面積は、１５００ｍｍ2～４０００ｍｍ2、さらには２０００ｍｍ2～３５００ｍｍ2、とすることが好ましいことがわかる。 In the present invention, even if the area of the ground-side element 12 is increased, many of the elements can be arranged at positions that can be hidden by the interior wall 6, so that a windshield having a good balance between radio wave reception sensitivity and appearance can be provided. You can see that In consideration of this result, when the ground side element 12 has a rectangular structure, when receiving radio waves in the frequency band of 470 MHz to 710 MHz, the area of the rectangular structure is 1500 mm 2 to 4000 mm 2 , and further 2000 mm. It can be seen that 2 to 3500 mm 2 is preferable.
　本発明は、車両の固定窓として設置されたウィンドシールドを電波受信装置として活用しようと車両の使用者が決定したときに、前記ウィンドシールドをアンテナエレメントとして活用せしめることができる。そのため、車両の販売店や、カー用品の販売店等で、テレビ、ラジオ、ＥＴＣ、カーナービゲーションを取り付けるときに、前記ウィンドシールドをこれら機器のための電波受信装置として活用することができる。 The present invention can use the windshield as an antenna element when a vehicle user decides to use a windshield installed as a fixed window of the vehicle as a radio wave receiver. Therefore, when a television, radio, ETC, or car navigation system is attached at a vehicle dealer or a car accessories dealer, the windshield can be used as a radio wave receiver for these devices.
　１：　　ウィンドシールド
　２：　　ガラス板
　３：　　可視光遮蔽領域
　４：　　接着ユニット
　５：　　ボディフランジ
　６：　　内装壁
　７：　　中央領域３２と内装壁６との間の空間
　８：　　コネクター
　９：　　配線
　１０：　　アンテナエレメントの給電部
　１０ｈ：　芯線側アンテナエレメントの給電部
　１０ａ：　アース側アンテナエレメントの給電部
　１１：　　芯線側アンテナエレメント
　１２：　　アース側アンテナエレメント
　１２１：　　ベタ塗り領域
　１３：　　ガラス板２に貼付されたフィルム 1: Windshield 2: Glass plate 3: Visible light shielding area 4: Bonding unit 5: Body flange 6: Interior wall 7: Space between the central area 32 and the interior wall 6 8: Connector 9: Wiring 10: Antenna element 10h: Feeding part of the core side antenna element 10a: Feeding part of the ground side antenna element 11: Core side antenna element 12: Ground side antenna element 121: Solid area 13: Film affixed to the glass plate 2

Claims (11)

  1. 　室内空間に内装壁を備える車両の固定窓として設置されたウィンドシールドであって、前記ウィンドシールドは、
    　ガラス板と、
    　前記ウィンドシールドの周縁部に形成され、前記ガラス板の端面側の第１側部領域と、前記第１側部領域とは反対側の第２側部領域と、前記第１、第２側部領域間の中央領域とを有する帯状の可視光遮蔽領域と、
    　前記第１側部領域と、ボディフランジとを接合する接着ユニットで形成された接合構造部と、
    　前記可視光遮蔽領域上に形成されたガラスアンテナエレメントと、
    を備え、
    　前記接合構造部と前記中央領域とは、前記内装壁に覆われており、
    　前記ガラスアンテナエレメントは、導電性材料からなる給電部と、前記給電部と結ばれた導電性材料からなるアンテナエレメントと、を備え、
    　前記給電部が、前記第２側部領域に配置され、
    　前記アンテナエレメントが、少なくとも前記中央領域上に配置されている、ウィンドシールド。     A windshield installed as a fixed window of a vehicle having an interior wall in an indoor space, wherein the windshield is
    A glass plate,
    A first side region formed on a peripheral portion of the windshield, on an end surface side of the glass plate, a second side region opposite to the first side region, and the first and second side portions. A band-shaped visible light shielding region having a central region between the regions;
    A joining structure formed by an adhesive unit that joins the first side region and the body flange;
    A glass antenna element formed on the visible light shielding region;
    With
    The joint structure portion and the central region are covered with the interior wall,
    The glass antenna element includes a power feeding portion made of a conductive material, and an antenna element made of a conductive material tied to the power feeding portion,
    The power feeding portion is disposed in the second side region;
    A windshield, wherein the antenna element is disposed at least on the central region.
  2. 　前記中央領域上に配置されているアンテナエレメントは、前記第２側部領域上に配置されているアンテナレメントを介して前記給電部と接合している、請求項１に記載のウィンドシールド。 The windshield according to claim 1, wherein the antenna element disposed on the central region is joined to the power feeding portion via an antenna element disposed on the second side region.
  3. 　前記アンテナエレメントが、前記ガラス板室内側の透視領域上に配置されている、請求項１又は２に記載のウィンドシールド。 The windshield according to claim 1 or 2, wherein the antenna element is disposed on a see-through region on the glass plate room inner side.
  4. 　前記アンテナエレメントが、前記第１側部領域に配置されていない、請求項１乃至３のいずれかに記載のウィンドシールド。 The windshield according to any one of claims 1 to 3, wherein the antenna element is not disposed in the first side region.
  5. 　前記アンテナエレメントが、芯線側アンテナエレメントと、アース側アンテナエレメントと、を備え、
    　前記給電部が、芯線側アンテナエレメントの給電部と、アース側アンテナエレメントの給電部とからなる、請求項１乃至４のいずれかに記載のウィンドシールド。     The antenna element comprises a core wire side antenna element and a ground side antenna element,
    The windshield according to any one of claims 1 to 4, wherein the power feeding unit includes a power feeding unit of a core wire side antenna element and a power feeding unit of a ground side antenna element.
  6. 　前記中央領域上には、前記芯線側アンテナエレメントが配置されていない、請求項５に記載のウィンドシールド。 The windshield according to claim 5, wherein the core wire side antenna element is not disposed on the central region.
  7. 　前記芯線側アンテナエレメントは、前記給電部から、ボディフランジから離隔する方向に延伸する線条を備える、請求項５又は６に記載のウィンドシールド。 The windshield according to claim 5 or 6, wherein the core wire side antenna element includes a filament extending in a direction away from the body flange from the feeding portion.
  8. 　前記中央領域上に、前記アース側アンテナエレメントが配置されている、請求項５乃至７のいずれかに記載のウィンドシールド。 The windshield according to any one of claims 5 to 7, wherein the ground side antenna element is disposed on the central region.
  9. 　前記アース側エレメントが矩形状の構造からなり、前記構造内に前記導電性材料からなるベタ塗り領域を備える、請求項５乃至８のいずれかに記載のウィンドシールド。 The windshield according to any one of claims 5 to 8, wherein the ground side element has a rectangular structure, and a solid coating region made of the conductive material is provided in the structure.
  10. 　電波受信装置の使用方法であって、
    　請求項１乃至９のいずれかに記載のウィンドシールドを準備する工程（Ａ）と、
    　前記給電部とコネクターとを接合し、前記ガラスアンテナエレメントと、
    　前記内装壁と前記中央領域との間の空間を通る配線と、を電気的に接合させる工程（Ｂ）と、を含む、電波受信装置の使用方法。     A method of using a radio wave receiver,
    A step (A) of preparing the windshield according to any one of claims 1 to 9;
    Bonding the power feeding part and the connector, the glass antenna element,
    And (B) a step of electrically joining a wiring passing through a space between the interior wall and the central region.
  11. 　前記工程（Ａ）と、前記工程（Ｂ）との間に、車両の使用者の前記電波受信装置の使用意思の有無が確認される工程を含む、請求項１０に記載の電波受信装置の使用方法。 The use of the radio wave receiving device according to claim 10, further comprising a step of confirming whether or not the user of the vehicle is willing to use the radio wave receiving device between the step (A) and the step (B). Method.
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