JP2016111572A - Decorative panel - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an antenna built-in decorative panel capable of ensuring antenna characteristics even in a vehicle including window glass having an infrared shielding region.SOLUTION: A decorative panel includes a plate-like body part (7) including an antenna (12) at the inside thereof. When the decorative panel is mounted to a vertical column (21) of a vehicle window frame, the body part (7) is positioned on a vehicle exterior side of the vertical column (21), one end part of the body part (7) along a longitudinal direction thereof overlaps a part of the peripheral region of window glass (19) that is received in the vehicle window frame and feeding sections (11x, 11y) of the antenna (12) do not overlap an infrared shielding region (19x) of the window glass (19).SELECTED DRAWING: Figure 3

Description

  The present invention relates to a decorative board mounted on, for example, a vehicle window frame.

  A vehicle or the like is equipped with many transmission / reception devices such as a radio, a television, a GPS, and various communication terminal devices, and an antenna connected to the transmission / reception devices. In this regard, Patent Documents 1 and 2 disclose a method of installing an antenna on a window glass of a vehicle.

JP 2008-22538 A (published January 31, 2008) Japanese Patent Laid-Open No. 7-46016 (published on February 14, 1995) JP 2012-144217 A (released on August 2, 2012) JP-A-8-210042 (released on August 13, 1996)

  There are cases where the window glass is provided with an infrared shielding function to suppress the temperature inside the vehicle (see Patent Documents 3 and 4), and when an antenna is installed in such an infrared shielding area of the window glass, it has a wavelength longer than infrared rays in particular. The radiation of electromagnetic waves is hindered and the antenna characteristics are deteriorated.

  The present invention proposes a decorative plate with a built-in antenna that can ensure antenna characteristics even in a vehicle having a window glass with an infrared shielding region.

  The decorative board of the present invention includes a plate-like main body portion including an antenna therein, and the main body portion is positioned outside the vehicle window frame when attached to the vehicle window frame, and extends along the longitudinal direction of the main body portion. One end portion overlaps with a partial region of the periphery of the window glass accommodated in the vehicle window frame, and the power feeding portion of the antenna does not overlap with the infrared shielding region of the window glass.

  As described above, the above-mentioned main body part with a built-in antenna is arranged outside the vehicle window frame, and the power feeding part that contributes most to the electromagnetic wave incident on or emitted from the antenna is arranged so as not to overlap the infrared shielding area of the window glass. By doing so, it is possible to reduce the influence of the infrared shielding region on the electromagnetic wave incident on or emitted from the antenna. Thereby, antenna characteristics can be secured even in a vehicle having a window glass with an infrared shielding region.

  In this decorative board, the radiating element of the antenna may be configured not to overlap with the infrared shielding area at the time of attachment.

  In this way, by arranging the antenna radiating element so as not to overlap the infrared shielding region, it is possible to further reduce the influence of the infrared shielding region on the electromagnetic wave incident on or emitted from the antenna.

  The decorative board includes a wind guide, and the wind guide is positioned between the vehicle window frame and one end portion along the longitudinal direction of the main body at the time of attachment, and the periphery of the window glass is placed in the wind guide. It is also possible to adopt a configuration in which a part of the area can be accommodated.

  Thus, by providing the wind guide on the decorative plate, the gap between the main body of the decorative plate and the window glass can be sealed, and the edge (end face) of the window glass can be protected.

  In the present decorative board, the wind guide and the power feeding portion overlap, and the wind guide may be formed of a material having a dielectric loss tangent of 0.67 or less.

  In this way, by using a material having a dielectric loss tangent of 0.67 or less for the wind guide, even if the wind guide and the feeding portion overlap, the wind guide has an effect on electromagnetic waves incident on or emitted from the antenna. It can be made sufficiently small, and antenna characteristics can be ensured.

  In the present decorative board, the antenna may be a planar antenna arranged along the plate surface of the main body.

  According to the said structure, the area of a radiation element can be enlarged and antenna performance can be improved.

  This decorative board can also be set as the structure attached to the vertical column (pillar) of the said vehicle window frame.

  This decorative board is suitable as a cover for a vertical pillar (pillar) of a vehicle window frame from the viewpoint of routing of a cable connected to an antenna.

  In the present decorative board, a partial region of the periphery of the window glass may be a non-infrared shielding region that is not an infrared shielding region.

  In this way, the distance between the antenna and the infrared shielding area can be increased, and the influence of the infrared shielding area on the electromagnetic wave incident on or emitted from the antenna can be further reduced.

  In this decorative board, the non-infrared shielding region may be configured to overlap the vertical column.

  In the above configuration, since the non-infrared shielding area overlaps the vertical column, it can be said that the non-infrared shielding area has very little influence on the increase in indoor temperature.

  The present invention includes a vehicle window frame, a window glass accommodated in the vehicle window frame, and a decorative plate attached to the vehicle window frame, and the decorative plate is provided with an antenna therein. Including a plate-like main body, the main body is located outside the vehicle window frame, one end along the longitudinal direction of the main body overlaps with a partial region of the periphery of the window glass, and the antenna A vehicle door in which the power feeding portion does not overlap with the infrared shielding region of the window glass is included.

  ADVANTAGE OF THE INVENTION According to this invention, the decorative board with a built-in antenna which can ensure an antenna characteristic is realizable also in the vehicle which has a window glass with an infrared shielding area.

It is a perspective view which shows the decorative board which concerns on this Embodiment attached to the vehicle. It is a top view which shows the structure of the decorative board and vehicle window frame in FIG. (A) is a longitudinal cross-sectional view of the vehicle window frame vicinity which concerns on Embodiment 1, (b) and (c) are cross-sectional views corresponding to two positions of (a). (A) is a longitudinal cross-sectional view of the vehicle window frame vicinity which concerns on the modification of this Embodiment, (b) And (c) is a cross-sectional view corresponding to two positions of (a).

  An embodiment of the present invention will be described below with reference to FIGS. In the following description, a direction (x-axis direction in the figure) corresponding to the front-rear direction of the vehicle is referred to as “front-rear direction”, and a direction (y-axis direction in the figure) corresponding to the left-right direction of the vehicle (door opening / closing direction). A direction (a z-axis direction in the drawing) corresponding to the vertical direction (top and bottom direction) of the vehicle is referred to as a “vertical (top and bottom) direction”.

[Overview of decorative panel 10]
FIG. 1 is a perspective view showing an appearance of a vehicle 20 to which a decorative board 10 according to the present embodiment is attached. FIG. 2 is a plan view showing the decorative plate 10 attached to the vertical column 21 corresponding to the z direction of the window frame (metal frame) 121 of the vehicle door 66 of FIG.

  As shown in FIGS. 1 and 2, the decorative plate 10 is a thin plate-like component having a trapezoidal shape that is long in the vertical direction (Z-axis direction in the drawing) and enclosing the planar antenna 12. The decorative plate 10 is a window frame cover that is attached to a vertical column 21 (pillar) located on the upper portion of the door body 5 of the vehicle door 66, and the main body portion 7 is positioned on the vehicle exterior side of the vertical column 21 when attached. One end portion along the longitudinal direction of the portion 7 overlaps with a partial region of the peripheral edge of the window glass 19.

  The main body 7 includes a planar antenna 12 between the inner surface that becomes the vertical column 21 side when the decorative plate 10 is attached and the outer surface on the opposite side. The decorative plate 10 includes a wind guide 36 (also referred to as a glass run channel) on the inner surface side of one end portion along the longitudinal direction of the main body portion 7. The window guide 36 is a protective member made of rubber, for example, and seals the gap between the main body 7 of the decorative plate 10 and the window glass 19 and protects the edge (end surface) of the window glass 19.

[Configuration of decorative plate 10]
3A is a longitudinal cross-sectional view (a cross-sectional view when the main body 7 is cut along the plane direction) including the planar antenna 12 of the decorative board 10, and FIGS. 3B and 3C are FIG. FIG. 4 is a cross-sectional view (a cross-sectional view when the main body portion 7 is cut along the thickness direction) corresponding to two positions (AA line and BB line) in FIG.

  As shown in FIG. 3, the main body portion 7 of the decorative board 10 is formed of a plate-like resin or the like, and has an inner surface 7b between the inner surface 7b on the vertical column 21 side and the outer surface 7c on the opposite side (outside of the outside world). The flat antenna 12 is provided along the outer surface 7c.

  Specifically, a storage space 22 is formed inside the main body 7, and in the storage space 22, an antenna substrate 11k, and a conductor film 11a (radiating element) and a conductor film 11b (radiating element) provided on the antenna substrate 11k. ), A power feeding part 11x (solder part) that feeds power to the conductor film 11a, and a power feeding part 11y (solder part) that feeds power to the conductor film 11b are housed.

  The antenna substrate 11k is, for example, a flexible substrate, and conductor films 11a and 11b are formed side by side in the Z direction on the flexible substrate. The flexible substrate is a thin plate-like member having flexibility, and for example, a dielectric film (for example, a polyimide film) is used. The planar antenna 12 is a dipole antenna in which the conductor film 11a is connected to the inner conductor of the coaxial cable 55 at the power feeding portion 11x and the conductor film 11b is connected to the outer conductor of the coaxial cable 55 at the power feeding portion 11y.

[Mounting structure of decorative board 10]
As shown in FIG. 2 and FIG. 3, the window glass 19 is accommodated in the window frame 121 of the vehicle 20, the decorative plate 10 is in contact with the vertical column 21, and a part of the inner surface 7 b of the main body 7 is in contact with the vertical column 21. It is attached as follows.

  As shown in FIGS. 3B and 3C, the vertical column 21 includes a first portion 21x that is in contact with the inner surface 7b of the main body portion 7, and a second portion 21y that is located on the vehicle inner side than the first portion. It is a structure containing. The reason why the second portion 21y is bent toward the vehicle inner side than the first portion 21x is to secure a space for accommodating the window glass 19.

  The decorative plate 10 includes a guide hold portion 7H that sandwiches the wind guide 36 together with the one end portion on the inner surface side of the one end portion along the longitudinal direction of the main body portion 7, and the inner surface side of the other end portion along the longitudinal direction of the main body portion 7. In addition, a vertical column holding portion 7G (folding portion) that sandwiches the first portion 21x of the vertical column 21 together with the other end portion is provided. And when the decorative board 10 is attached to the vertical column 21, the window guide 36 is located between the vertical column 21 and the one end part along the longitudinal direction of the main-body part 7, and a partial area | region of the periphery of the window glass 19 Is accommodated in the window guide 36, and a partial region of the peripheral edge overlaps the main body portion 7. The window glass 19 has an infrared shielding function, and has an infrared shielding region (region having a function of shielding infrared rays) 19x.

  Here, as shown in FIG. 2 and FIG. 3, when the vertical column 21 is viewed from the front (when viewed in the Y direction), the feeding portions 11 x and 11 y of the planar antenna 12 built in the decorative plate 10 are windows. It arrange | positions so that it may not overlap with the infrared shielding area 19x of the glass 19.

  As shown in FIGS. 2 and 3, when the vertical column 21 is viewed from the front (when viewed in the Y direction), the conductor films 11a and 11b of the planar antenna 12 incorporated in the decorative plate 10 are window glass. The nineteen infrared shielding areas 19x are arranged so as not to overlap.

  Further, the window guide 36 and the power feeding portion 11x of the planar antenna 12 overlap each other, and the window guide 36 is formed of a material having a dielectric loss tangent of 0.67 or less. As the resin material having a dielectric loss tangent of 0.67 or less, TPE (Thermoplastic Elastomer), EPDM (Ethylene Propylene Diene Monomer) having a sufficiently low content of carbon black, or the like is used.

  Furthermore, a partial area of the peripheral edge of the window glass 19 that overlaps the main body 7 is a non-infrared shielding area 19h that is not the infrared shielding area 19x. The non-infrared shielding area 19h is the second portion 21y of the vertical column 21. It overlaps with.

[Effect of decorative panel 10]
The decorative plate 10 is configured such that the feeding portion (11x / 11y) of the planar antenna 12 does not overlap the infrared shielding region 19x of the window glass 19.

  In this way, the decorative plate 10 incorporating the planar antenna 12 is attached to the vertical column 21, and the feeding portions 11 x and 11 y that contribute most to the electromagnetic waves incident on or emitted from the planar antenna 12 are shielded from the infrared rays of the window glass 19. By arranging so as not to overlap the region 19x, it is possible to reduce the influence of the infrared shielding region 19x on the electromagnetic wave incident on or emitted from the planar antenna 12. Thereby, antenna characteristics can be secured even in the vehicle 20 having the window glass 19 with the infrared shielding region 19x.

  The decorative board 10 is configured such that the radiating elements 19a and 19b of the planar antenna 12 do not overlap with the infrared shielding area 19x when attached to the vertical column 21.

  Thus, by arranging the conductor films 11a and 11b of the planar antenna 12 so as not to overlap the infrared shielding region 19x, the influence of the infrared shielding region 19x on the electromagnetic wave incident on or emitted from the planar antenna 12 is exerted. It can be further reduced.

  The decorative board 10 includes a wind guide 36, and when attached to the vertical column 21, the wind guide 36 is located between the vertical column 21 and one end portion along the longitudinal direction of the main body portion 7. This is a configuration in which a partial region of the peripheral edge of the window glass 19 is accommodated.

  By providing the wind guide 36 on the decorative plate 10 in this way, the gap between the decorative plate 10 and the main body portion 7 can be sealed, and the edge (end surface) of the window glass 19 can be protected.

  In the decorative board 10, the window guide 36 and the power feeding portion 11 x overlap each other, and the window guide 36 is configured by a material having a dielectric loss tangent of 0.67 or less.

  Thus, by using a material having a dielectric loss tangent of 0.67 or less for the window guide 36, the window guide 36 enters or exits the planar antenna 12 even when the window guide 36 and the power feeding portion 11x overlap. Thus, the influence on the electromagnetic wave can be sufficiently reduced, and the antenna characteristics can be ensured.

  The decorative board 10 has a configuration in which a planar antenna 12 is provided between an inner surface 7b on the side of the vertical column 21 of the main body 7 and an outer surface 7c on the opposite side. That is, the planar antenna 12 is arranged along the plate surface inside the plate-shaped main body 7.

  According to the said structure, the area of conductor film 11a * 11b can be enlarged, and antenna performance can be improved.

  The decorative plate 10 is suitable for a cover for a vertical pillar (pillar) of the window frame 121 from the viewpoint of routing of a cable connected to the antenna.

  In the decorative panel 10, a partial region (a region overlapping with one end portion along the longitudinal direction of the main body portion 7) of the window glass 19 is a non-infrared shielding region 19 h that is not the infrared shielding region 19 x.

  In this way, the distance between the planar antenna 12 and the infrared shielding area 19x can be increased, and the influence of the infrared shielding area 19x on the electromagnetic wave incident on or emitted from the planar antenna 12 can be further reduced. it can.

  In the decorative board 10, the non-infrared shielding area 19 h is configured to overlap the vertical column 21.

  In the above configuration, since the non-infrared shielding area 19h overlaps the vertical column 21, even if the non-infrared shielding area 19h is provided, there is almost no influence on the rise in the in-vehicle temperature.

  As shown in FIGS. 1 to 3, the present embodiment includes a window frame 121, a window glass 19 accommodated in the window frame 121, and a decorative plate 10 (window frame cover) attached to the window frame 121. The decorative board 10 includes a plate-like main body portion 7 in which a planar antenna 12 is provided, and the main body portion 7 is located outside the window frame 121 in the longitudinal direction of the main body portion 7. A vehicle door 66 is included in which the one end along the line overlaps with a partial region of the peripheral edge of the window glass 19 and the feeding portions 11x and 11y of the planar antenna 12 do not overlap with the infrared shielding area 19x of the window glass 19.

[Modification]
In FIG. 3, the window glass 19 having the non-infrared shielding area 19h at the edge portion is used, but the present invention is not limited to this. For example, as shown in FIG. 4, it is also possible to use a window glass 19 that does not have a non-infrared shielding region at the edge portion (the infrared shielding region 19x is provided up to the edge portion). In this case, the positions of the planar antenna 12 and the coaxial cable 55 of the main body 7 are kept away from the window guide 36 so that the power feeding portions 11x and 11y and the conductor films 11a and 11b do not overlap with the infrared shielding region 19x of the window glass 19. Can be arranged. Thereby, the influence which the infrared shielding area 19x has on the electromagnetic wave incident on the planar antenna 12 or emitted from the planar antenna 12 can be reduced.

  The present invention is not limited to the above-described embodiments, and various modifications are possible within the scope shown in the claims, and embodiments obtained by appropriately combining technical means disclosed in different embodiments. Is also included in the technical scope of the present invention.

  The decorative board can be used as, for example, a decorative board for a window frame of a vehicle.

DESCRIPTION OF SYMBOLS 5 Door body 7 Main-body part 7b Inner surface 7c Outer surface 7G Vertical column holding | maintenance part 7H Guide holding part 11x * 11y Feeding part 10 Decorative plate 11a * 11b Conductive film (radiation element)
12 Planar antenna (antenna)
19 window glass 19x infrared shielding area 19h non-infrared shielding area 21 vertical pillar 36 window guide 55 coaxial cable 66 vehicle door 121 window frame (vehicle window frame)

Claims (8)

  A plate-like main body portion including an antenna is provided inside, and when the main body portion is attached to the vehicle window frame, the main body portion is located outside the vehicle window frame, and one end portion along the longitudinal direction of the main body portion is the vehicle A decorative board characterized in that it overlaps with a partial region of the periphery of the window glass accommodated in the window frame, and the feeding portion of the antenna does not overlap with the infrared shielding region of the window glass.   2. The decorative board according to claim 1, wherein the radiating element of the antenna does not overlap with the infrared shielding area during the attachment. With a wind guide,
The window guide is located between the vehicle window frame and one end portion along the longitudinal direction of the main body at the time of attachment, and a partial region of the periphery of the window glass is accommodated in the window guide. The decorative board according to claim 1 or 2.   4. The decorative board according to claim 3, wherein the window guide and the power feeding portion overlap, and the window guide is formed of a material having a dielectric loss tangent of 0.67 or less.   4. The decorative board according to claim 3, wherein the antenna is a planar antenna arranged along the plate surface of the main body.   The decorative board according to any one of claims 1 to 5, wherein the decorative board is attached to a vertical column of the vehicle window frame.   The decorative board according to claim 6, wherein a part of the peripheral edge of the window glass is a non-infrared shielding area that is not an infrared shielding area. The decorative board according to claim 7, wherein the non-infrared shielding region overlaps the vertical column.

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