JP7265071B1 - film antenna - Google Patents

Abstract

A film antenna is provided in which no gap is formed between a surface to be installed and a film material. A film antenna includes a substrate (100) and a film material (200) having a first portion bonded to the substrate (100) and a second portion protruding from the substrate (100). At least part of the first portion of the film material is arranged on the upper surface of the base material 100, and a lower member 300 having a lower surface to be installed on the installation target surface on which the film antenna is installed, and the first part of the film material 200. It has a middle member 310 disposed thereon and an upper member 320 disposed on the middle member 310 . The second portion of the film material 200 protrudes from the lower end of the base material 100 , and at least a part of the inclined portion of the first portion of the film material 200 is arranged on the lower member 300 . [Selection drawing] Fig. 7

Description

The present invention relates to film antennas.

Patent Literature 1 describes a film antenna that is attached to a window glass of a vehicle or the like, is composed of a film portion that includes a power supply portion and an antenna, and can be used in various communication systems.
(See Patent Document 1, for example).
[Prior art documents]
[Patent Literature]
[Patent Document 1] JP-A-2006-5400

According to one embodiment of the invention, a film antenna is provided. The film antenna may include a base material and a film material containing the antenna, the film material having a first portion bonded to the base material and a second portion protruding from the base material. The base material may have a lower surface on which at least a part of the first portion of the film material is arranged and which has a lower surface to be installed on an installation target surface on which the film antenna is installed. The substrate may have a middle member positioned over the first portion of the film material. The substrate may have a top member positioned over the middle member. The second portion of the film material may protrude from the lower end of the substrate. At least part of the slanted portion of the first portion of the film material may be disposed on the lower member. Only a part of the inclined portion of the first portion of the film material may be arranged on the lower member.

According to one embodiment of the invention, a film antenna is provided. The film antenna may include a base material and a film material containing the antenna, the film material having a first portion bonded to the base material and a second portion protruding from the base material. The base material may have a lower surface on which at least a part of the first portion of the film material is arranged and which has a lower surface to be installed on an installation target surface on which the film antenna is installed. The substrate may have a middle member positioned over the first portion of the film material. The substrate may have a top member positioned over the middle member. The second part of the film material may protrude from the lower end of the base material, and the base material has the upper member that is longest in the direction in which the second part of the film material protrudes, and , the lower member may be the shortest.

According to one embodiment of the invention, a film antenna is provided. The film antenna may include a base material and a film material containing the antenna, the film material having a first portion bonded to the base material and a second portion protruding from the base material. The base material may have a lower surface on which at least a part of the first portion of the film material is arranged and which has a lower surface to be installed on an installation target surface on which the film antenna is installed. The substrate may have a middle member positioned over the first portion of the film material. The substrate may have a top member positioned over the middle member. The second portion of the film material may protrude from the lower end of the substrate. In the base material, the lower member may be shorter than the intermediate member in a direction in which the second portion of the film material protrudes.

According to one embodiment of the invention, a film antenna is provided. The film antenna may include a base material and a film material containing the antenna, the film material having a first portion bonded to the base material and a second portion protruding from the base material. The base material may have a lower surface on which at least a part of the first portion of the film material is arranged and which has a lower surface to be installed on an installation target surface on which the film antenna is installed. The substrate may have a middle member positioned over the first portion of the film material. The substrate may have a top member positioned over the middle member. The second portion of the film material may protrude from the lower end of the substrate. In the base material, the lower member may be shorter than the upper member in a direction in which the second portion of the film material protrudes.

According to one embodiment of the invention, a film antenna is provided. The film antenna may include a base material and a film material containing the antenna, the film material having a first portion bonded to the base material and a second portion protruding from the base material. The base material may have a lower surface on which at least a part of the first portion of the film material is arranged and which has a lower surface to be installed on an installation target surface on which the film antenna is installed. The substrate may have a middle member positioned over the first portion of the film material. The substrate may have a top member positioned over the middle member. The second portion of the film material may protrude from the lower end of the substrate. The upper surface of the lower end of the inclined portion of the first portion of the film material may be covered with the upper member.

According to one embodiment of the invention, a film antenna is provided. The film antenna may include a base material and a film material containing the antenna, the film material having a first portion bonded to the base material and a second portion protruding from the base material. The base material may have a lower surface on which at least a part of the first portion of the film material is arranged and which has a lower surface to be installed on an installation target surface on which the film antenna is installed. The substrate may have a middle member positioned over the first portion of the film material. The substrate may have a top member positioned over the middle member. The second portion of the film material may protrude from the lower end of the substrate. When the film antenna is installed on the installation target surface, a gap surrounded by the installation target surface, the film material, and the lower member may be formed inside the upper member.

According to one embodiment of the invention, a film antenna is provided. The film antenna includes a base material, a film material containing the antenna, the base material and the film material, the first part being bonded to the base material and the second part protruding from the base material. and a plate-like member, at least partially transparent, on which is arranged. The base material may have a lower surface on which at least a part of the first portion of the film material is arranged and which has a lower surface to be installed on an installation target surface on which the film antenna is installed. The substrate may have a middle member positioned over the first portion of the film material. The substrate may have a top member positioned over the middle member. The second portion of the film material may protrude from the lower end of the substrate. The plate member may be entirely made of a transparent material. A part of the plate-shaped member may be made of a transparent material, a portion of the plate-shaped member where the second portion of the film material is arranged is transparent, and the base material is The placed portion may be opaque.

According to one embodiment of the invention, a film antenna is provided. The film antenna may include a base material and a film material containing the antenna, the film material having a first portion bonded to the base material and a second portion protruding from the base material. The base material may have a lower surface on which at least a part of the first portion of the film material is arranged and which has a lower surface to be installed on an installation target surface on which the film antenna is installed. The substrate may have a middle member positioned over the first portion of the film material. The substrate may have a top member positioned over the middle member. The second portion of the film material may protrude from the lower end of the substrate. A cavity may exist between the top member and the middle member. The base material may have a connector arranged on the upper side of the intermediate member, and wiring electrically connecting the connector and the antenna. The wiring may pass through the middle member from the connector and be connected to the antenna. The wiring may be connected to the antenna from the connector without passing through the middle member. The middle member may be joined to the lower surface of the upper member, extend in the height direction from the joint surface, and abut on the second portion of the film material. The upper member may have a first cover portion arranged in a projecting direction in which the second portion of the film material projects, and a second cover portion arranged in a direction opposite to the projecting direction. , the middle member may be joined to the first cover part or the second cover part. The base member may have a connector arranged on the lower member and wiring electrically connecting the connector and the antenna. The wiring may pass through the lower member from the connector and be connected to the antenna. The wiring may be connected to the antenna without passing through the lower member from the connector.

According to one embodiment of the invention, a film antenna is provided. The film antenna may include a base material and a film material containing the antenna, the film material having a first portion bonded to the base material and a second portion protruding from the base material. The base member may have a lower member on which at least part of the first portion of the film material is arranged. The substrate may have a middle member positioned over the first portion of the film material. The substrate may have a top member positioned over the middle member. The upper member may have a first cover portion arranged in a projecting direction in which the second portion of the film material projects, and a second cover portion arranged in a direction opposite to the projecting direction. . The second portion of the film material may protrude from the lower end of the first cover portion. The second portion of the film material and the lower end of the second cover portion may be installed on the installation target surface. The base member may have a connector arranged on the upper side of the lower member, and wiring electrically connecting the connector and the antenna. The base member may have a connector arranged on the lower side of the lower member, and wiring electrically connecting the connector and the antenna.

It should be noted that the above summary of the invention does not list all the necessary features of the invention. Subcombinations of these feature groups can also be inventions.

An example of a conventional film antenna 60 is shown schematically. An example of the XX section of a conventional film antenna 60 is shown schematically. An example of the film antenna 10 which concerns on this embodiment is shown roughly. An example of a YY section of the film antenna 10 is shown schematically. An example of a ZZ section of the film antenna 10 is shown schematically. Another example of the base material 100 is shown schematically. Another example of the base material 100 is shown schematically. Another example of the base material 100 is shown schematically. Another example of the base material 100 is shown schematically. Another example of the base material 100 is shown schematically. Another example of the base material 100 is shown schematically. Another example of the base material 100 is shown schematically. 4 schematically shows another example of the lower member 300 Another example of the lower member 300 is shown schematically. Another example of the lower member 300 is shown schematically. Another example of the film antenna 10 is schematically shown. Another example of the film antenna 10 is schematically shown. Another example of the film antenna 10 is schematically shown. Another example of the film antenna 10 is schematically shown. Another example of the film antenna 10 is schematically shown. Another example of the film antenna 10 is schematically shown. Another example of the film antenna 10 is schematically shown. Another example of the film antenna 10 is schematically shown. Another example of the film antenna 10 is schematically shown. Another example of the film antenna 10 is schematically shown. An example of a ZZ section of the film antenna 10 illustrated in FIG. 25 is schematically shown.

In a film antenna that has a feeding part and a film material that encloses the antenna, if there is a gap between the surface to be installed and the film material, which is the result of the film floating, the adhesive strength will decrease due to air bubbles, and the durability will be reduced due to the inclusion of dust. It is conceivable that the quality may decline. In the film antenna according to the present embodiment, for example, a gap between the installation target surface and the film material is enclosed in the feeding section side and is isolated from the outside. As a result, it is possible to prevent dust and foreign matter from entering the gap, which contributes to suppressing a decrease in the adhesiveness of the film portion, a decrease in antenna performance, a decrease in durability of the film portion, and the like.

Hereinafter, the present invention will be described through embodiments of the invention, but the following embodiments do not limit the invention according to the claims. Also, not all combinations of features described in the embodiments are essential for the solution of the invention.

FIG. 1 schematically shows an example of a conventional film antenna 60. As shown in FIG. FIG. 2 schematically shows an example of the XX section of the film antenna 60. As shown in FIG.

A film antenna 60 includes a base material 600 , a film material 700 and a connector 800 . Base material 600 may also be referred to as a feeder. The substrate 600 has a lower member 610 , a middle member 620 and an upper member 630 . The lower member 610 has a plate shape, and a part of the film material 700 is arranged on the upper surface thereof. A middle member 620 is arranged on part of the film material 700 , and an upper member 630 is arranged on the middle member 620 .

A film material 700 includes an antenna 710 and wiring 712 . A connector 800 and wiring 802 are arranged in the intermediate member 620 . The wiring 802 and the wiring 712 are connected, and the connector 800 and the antenna 710 are electrically connected.

The lower member 610 is adhered to the installation target surface on which the film antenna 60 is installed. The lower member 610 plays a role of preventing or reducing heat generated in at least one of the connector 800, the wiring 802, and the wiring 712 from being transferred to the installation target surface.

When the conventional film antenna 60 is installed on the installation target surface, the film material 700 may float, that is, a gap may be formed. If dust or foreign matter enters the gap, the durability of the film antenna 60 may be reduced. By bending the film material 700 at a steep angle after protruding from the base material 600, the gap can be reduced or eliminated, but the resistance of the wiring 712 at the bent portion increases or the wiring 712 is damaged at the bent portion. This is not desirable.

FIG. 3 schematically shows an example of the film antenna 10 according to this embodiment. The film antenna 10 may comprise a substrate 100 and a film material 200. As shown in FIG. The film antenna 10 may have the connector 400 .

The film antenna 10 may be connected to a wireless device (not shown) via the connector 400 and may provide the wireless device with an antenna function. Examples of antenna functions include, but are not limited to, a transmission/reception function for 5G (5th Generation Mobile Communication System) and a transmission/reception function for LTE (Long Term Evolution).

The film antenna 10 may be installed, for example, by being adhered to a surface such as a transparent window of a building. Not limited to this, the film antenna 10 may be installed at any place.

A part of the film material 200 is fixed to the base material 100 . The base material 100 and the film material 200 are fixed to the installation target surface on which the film antenna 10 is installed. The base material 100 and the film material 200 are adhered, for example, to the installation target surface.

The film material 200 may include the antenna 500 and wiring 502 electrically connecting the antenna 500 and the connector 400 . The film material 200 may be made of a transparent material that does not obstruct the scenery when installed on glass or the like. The wiring 502 may be so thin that it cannot be seen with the naked eye from the viewpoint of beauty when the film antenna 10 is installed.

FIG. 4 schematically shows an example of a YY section of the film antenna 10. As shown in FIG. The substrate 100 comprises a lower member 300 , a middle member 310 and an upper member 320 . It should be noted that it is not essential that the base material 100 includes all of the lower member 300 , the middle member 310 and the upper member 320 .

The lower member 300 is installed on the installation target surface on which the film antenna 10 is installed. For example, the lower surface 302 of the lower member 300 is adhered to the installation target surface. Any method may be used to adhere the lower surface 302 to the installation target surface. Examples of the adhesion method include adhesion using an adhesive agent, double-sided tape, or the like, and the lower surface 302 itself having adhesiveness. Note that the lower surface 302 may be installed on the installation target surface by a method other than adhesion. For example, if the installation target surface is a material that can be screwed, the lower member 300 is screwed to the installation target surface.

A portion of the film material 200 is disposed on the upper surface 304 of the lower member 300 . A portion of the film material 200 may be fixed to the top surface 304 . For example, a portion of film material 200 may be adhered to top surface 304 . Any method may be used to adhere the film material 200 to the upper surface 304 of the part. Examples of the adhesion method include adhesion using an adhesive agent, double-sided tape, or the like, adhesion of the upper surface 304 itself, and adhesion of the film material 200 itself. A part of the film material 200 may be fixed to the upper surface 304 by a method other than adhesion. For example, a portion of the film material 200 is screwed or the like to the upper surface 304 . A portion of the film material 200 may also be fixed to the upper surface 304 by pressure of the middle member 310 against the lower member 300 . The method for fixing the film material 200 to the upper surface 304 is not limited to the above example as long as the wiring included in the film material 200 is not broken.

A middle member 310 may be placed over a portion of the film material 200 . The intermediate member 310 may include the connector 400 and wiring that electrically connects the connector 400 and the antenna of the film material 200 .

The upper member 320 may be positioned over the middle member 310 . The upper member 320 may have a shape that covers the middle member 310 . The upper member 320 may have a shape that covers the side surface of the middle member 310 . Upper member 320 may be secured to lower member 300 . 3 and 4 show an example in which the upper member 320 is fixed to the lower member 300 by the fasteners 30, but the method of fixing the upper member 320 to the lower member 300 is not limited to this. For example, top member 320 may be glued to bottom member 300 . Note that the upper member 320 does not have to have a shape that covers the middle member 310 . Also, the upper member 320 may not be fixed to the lower member 300 .

FIG. 5 schematically shows an example of a ZZ section of the film antenna 10. As shown in FIG. The film material 200 has a joint portion 202 joined to the substrate 100 and a projecting portion 204 protruding from the substrate 100 . The joining portion 202 may be an example of a first portion of the film material 200 . Projecting portion 204 may be an example of a second portion of film material 200 .

Middle member 310 may have connector 400 and wiring 402 electrically connecting connector 400 and antenna 500 . In FIG. 5, wiring 402 is connected to wiring 502 of antenna 500 on lower member 300 . Also, FIG. 5 shows an example in which the wiring 402 connects the connector 400 and the wiring 502 at the shortest distance, but the connection method is not limited to this. For example, the wiring 402 may be wired along between the intermediate member 310 , the upper member 320 , the cover portion 322 and the film material 200 . The same applies to subsequent examples and drawings.

At least a portion of the joint portion 202 of the film material 200 is inclined. In the example shown in FIG. 5, the interface portion 202 is partially positioned above the lower member 300 and partially slanted. In the base material 100 shown in FIG. 5, the lower member 300 does not extend to the end of the base material 100 where the film material 200 protrudes, and has a shape that is interrupted in the middle. It is configured so that the portion is inclined. As shown in FIG. 5 , the film material 200 may have an inclined portion closer to the base material 100 than the boundary between the joint portion 202 and the projecting portion 204 . The film antenna 10 is a film antenna in which a gap surrounded by the installation target surface, the film material 200, and the lower member 300 is generated inside the upper member 320 when the film antenna 10 is installed on the installation target surface. It's okay.

In this way, by shortening the length of the lower member 300 in the direction in which the film material 200 protrudes compared to the conventional art, the position at which the film material 200 is inclined is not outside the base material 100, It can be in the substrate 100 . As a result, the gap can be hidden in the base material 100, and the heat insulating function of the lower member 300 can be maintained to some extent, and the entry of dust, foreign matter, and the like can be suppressed.

The upper member 320 shown in FIG. 5 has a cover portion 322 . The cover portion 322 may cover one end of the middle member 310 and have an end located at the interface between the joint portion 202 and the protruding portion 204 . Positioning the end of the cover portion 322 at the boundary between the joint portion 202 and the protruding portion 204 can reduce the possibility of creating a gap between the film material 200 and the installation target surface. Note that the upper member 320 may not have the cover portion 322 .

The material of the lower member 300 may be any material as long as it can suppress the heat generated in the intermediate member 310 from being transferred to the installation target surface. The lower member 300 may be a heat resistant member. By using a heat-resistant member for the lower member 300, the amount of heat transmitted from the middle member 310 to the installation target surface can be greatly reduced, or the heat can be prevented from being transmitted. Lower member 300 and upper member 320 may be of the same material.

The lower member 300 and upper member 320 and the middle member 310 may be made of different materials. For example, the material of the lower member 300 and the upper member 320 is resin such as polyvinyl chloride (PVC) and ABS resin, and the material of the intermediate member 310 is resin. The materials of the lower member 300, middle member 310, and upper member 320 may all be different. The materials of the lower member 300, the intermediate member 310 and the upper member 320 may all be the same.

The lower member 300 may be made of an elastic material at the end on the upper surface 304 side where the protruding portion 204 protrudes. As a result, the pressure exerted by the end portion of the lower member 300 on the film material 200 can be reduced, and the possibility of the wiring 502 inside the film material 200 being damaged can be reduced. Examples of elastic materials include, but are not limited to, rubber.

In this example, the base material 100 has a shape in which the depth direction is shorter than the width direction. The depth direction may be the same as the direction in which the joint portion 202 of the film material 200 protrudes from the base material 100 .

The base member 100 may have a _structure in which the depth D of the lower member 300 is shorter than _{the depth} D of the middle member 310 . That is, in the substrate 100, the lower member 300 may be shorter than the middle member 310 in the direction in which the protruding portion 204 of the film material 200 protrudes. The substrate 100 may have a structure in which the depth D _{lower member} is shorter than the depth D _{upper member} of the upper member 320 . That is, in the substrate 100, the lower member 300 may be shorter than the upper member 320 in the direction in which the protruding portion 204 of the film material 200 protrudes. The substrate 100 may have a structure in which the depth D _{upper member} is the longest and the depth D _{lower member} is the shortest among the depth D _{upper member, the depth D middle member} , and the depth D _{lower member} . That is, the substrate 100 may have the longest length in the upper member 320 and the shortest length in the lower member 300 in the direction in which the protruding portion 204 of the film material 200 protrudes. When the depth D _{lower member} has a structure shorter than the depth D _{middle member} , the depth D _{upper member} may be longer than the depth D _{middle member} as described above, but may be longer than the depth D _{middle member} .

FIG. 6 schematically shows another example of the substrate 100. As shown in FIG. Here, differences from the base material 100 shown in FIG. 5 are mainly described. Lower member 300 illustrated in FIG. 6 includes base 306 and ramp 307 . The base portion 306 has a plate shape, and the inclined portion 307 extends from the base portion 306 . For example, base 306 has a cuboid shape. In the example shown in FIG. 6 , the sloping portions of the joint portions 202 of the film material 200 are all arranged above the lower member 300 . The lower member 300 shown in FIG. 6 has a larger volume and a slightly more complicated shape than the lower member 300 shown in FIG. The lower member 300 may be entirely made of the same material, or may be partially made of a different material. For example, ramp 307 may be of a different material than base 306 . Also, the inclined portion 307 may be made of the same material as the base portion 306 .

Here, the film material 200 is bent near the tip of the inclined portion 307 . As described above, when the film material 200 is bent, the resistance value increases and the possibility of breakage increases. Therefore, when it is necessary to bend the film material 200, it is desirable to make the bending angle as small as possible and bend gently. .

FIG. 7 schematically shows another example of the substrate 100. As shown in FIG. Here, differences from the base material 100 shown in FIG. 6 are mainly described. In FIG. 6, the case where the slanted portions of the joint portions 202 of the film material 200 are all arranged above the lower member 300 has been described. A part may be arranged on the lower member 300 . That is, at least a portion of the inclined portion of the joint portion 202 of the film material 200 may be arranged above the lower member 300 . Only a part of the inclined portion of the joint portion 202 of the film material 200 may be arranged on the lower member 300 . In the example shown in FIG. 7, there is a gap 102 between the sloped portion of the joint portion 202 of the film material 200 and the sloped portion 307 .

According to this, compared with the lower member 300 illustrated in FIG. 6, the degree of freedom of the film material 200 is slightly increased when the film antenna 10 is installed on a plane, and the bending angle of the film material 200 is slightly relaxed. , the load on the film material 200 can be reduced, and breakage of the antenna wire 502 or damage to the film material 200 can be prevented.

Here, the film material 200 is bent near the tip of the inclined portion 307 . As described above, it is desirable to gently bend the film material 200 , but for this purpose, it is necessary to mold so that the tip of the inclined portion 307 becomes thin, which makes molding difficult.

FIG. 8 schematically shows another example of the substrate 100. As shown in FIG. Here, differences from the base material 100 shown in FIG. 6 are mainly described. In the base material 100 shown in FIG. 8 as well, the inclined portion of the joint portion 202 of the film material 200 is partly arranged on the lower member 300 . The sloped portion 307 of the lower member 300 illustrated in FIG. 8 has a shorter shape along the direction from the joint portion 202 to the projecting portion 204 compared to the sloped portion 307 of the lower member 300 illustrated in FIG. In the example shown in FIG. 8, the inclined portion of the joint portion 202 of the film material 200 is placed on the entire upper surface of the inclined portion 307, but the inclined portion of the joint portion 202 of the film material 200 is partially There is a depression 104 in the bottom surface of the substrate 100 resting on the ramp 307 .

According to this, compared with the lower member 300 illustrated in FIG. 6, the tip portion of the inclined portion 307 of the lower member 300 can be easily molded, and the degree of manufacturing difficulty can be lowered.

As described above, the lower member 300 has the function of preventing or reducing heat generated inside the base material 100 from being transmitted to the installation target surface. Therefore, it is desirable that the lower member 300 covers a larger range of attachment of the base material 100 .

FIG. 9 schematically shows another example of the substrate 100. As shown in FIG. Here, differences from the base material 100 shown in FIG. 5 are mainly described. The lower member 300 illustrated in FIG. 9 is entirely inclined from the upper member 320 toward the installation target surface. A joint portion 202 of the film material 200 is entirely arranged on the lower member 300 . The film material 200 placed on the lower member 300 may be in contact with the installation target surface at the edge of the base material 100 . Compared with the lower member 300 shown in FIG. 5, the lower member 300 shown in FIG. 9 can reduce the bending angle of the film material 200 and improve the quality of the signal propagating through the wiring 502 .

Further, as illustrated in FIG. 9 , the lower end upper surface 220 of the joint portion 202 of the film material 200 may be covered with the cover portion 322 of the upper member 320 . That is, the lower end upper surface 220 of the joint portion 202 of the film material 200 may be covered with the upper member 320 . Thereby, the upper member 320 can prevent the film material 200 from floating. In addition, the lower member 300 can cover most of the mounting surface of the base material 100 while reducing the bending that occurs in the film material 200, thereby enhancing the heat insulating effect.

FIG. 10 schematically shows another example of the substrate 100. As shown in FIG. Here, differences from the base material 100 shown in FIG. 5 are mainly described. As illustrated in FIG. 10 , the bottom upper surface 220 of the joint portion 202 of the film material 200 may be covered with the cover portion 322 of the upper member 320 . That is, the lower end upper surface 220 of the joint portion 202 of the film material 200 may be covered with the upper member 320 . Thereby, the upper member 320 can prevent the film material 200 from floating.

FIG. 11 schematically shows another example of the substrate 100. As shown in FIG. Here, differences from the base material 100 shown in FIG. 6 are mainly described. As illustrated in FIG. 11 , the bottom upper surface 220 of the joint portion 202 of the film material 200 may be covered with the cover portion 322 of the upper member 320 . That is, the lower end upper surface 220 of the joint portion 202 of the film material 200 may be covered with the upper member 320 . Thereby, the upper member 320 can prevent the film material 200 from floating.

FIG. 12 schematically shows another example of the substrate 100. As shown in FIG. Here, differences from the base material 100 shown in FIG. 5 are mainly described. In this example, the lower member 300 has a curved end on the upper surface 304 side where the film material 200 protrudes. The curved portion may be smoothed, for example chamfered. FIG. 12 illustrates the case where the lower member 300 has a chamfered portion R. As shown in FIG. As a result, the pressure exerted by the end portion of the lower member 300 on the film material 200 can be reduced, and the possibility of the wiring 502 inside the film material 200 being damaged can be reduced. It should be noted that only the curved portion of the lower member 300 may be made of an elastic material such as rubber.

13 and 14 schematically show another example of the lower member 300. FIG. 13 schematically shows the shape of the lower member 300 viewed from above, and FIG. 14 schematically shows the shape of the lower member 300 viewed from the side. 13 and 14, illustration of a portion fixed to the upper member 320 is omitted.

The lower member 300 illustrated in FIGS. 13 and 14 includes a base portion 306, a stretched portion 308 stretched from one end side of the base portion 306 in the direction in which the film material 200 protrudes, and a film material from the other end side of the base portion 306. and an extension portion 309 extending in the direction in which the material 200 protrudes.

The stretched portion 308 and the stretched portion 309 are inclined in the stretching direction, and the inclined portion of the film material 200 may be arranged on the upper surface. The lower member 300 illustrated in FIG. 6 has an inclined portion 307 extending across the entire width of the base portion 306, whereas the lower member 300 illustrated in FIGS. It has two extending portions 308 and 309 extending toward the side. By providing the extending portions 308 and 309 at both ends of the base portion 306, it is possible to reduce the volume of the lower member 300 while preventing dust and foreign matter from entering from the outside.

FIG. 15 schematically shows another example of the lower member 300. As shown in FIG. Here, differences from the lower member 300 illustrated in FIGS. 13 and 14 are mainly described. FIG. 15 schematically shows the shape of the lower member 300 viewed from above. The lower member 300 shown in FIG. 15 has a corrugated shape on the side from which the film material 200 protrudes. The shape of the side of the lower member 300 from which the film member 200 protrudes is not limited to this, and may be another shape.

Here, the heavier the base material 100, the higher the possibility that the base material 100 will peel off from the installation target surface due to aged deterioration. Therefore, it is desirable that the base material 100 is lighter.

FIG. 16 schematically shows another example of the film antenna 10. As shown in FIG. Here, differences from the film antenna 10 shown in FIG. 5 are mainly described. Although FIG. 5 illustrates an example in which the middle member 310 is filled in the upper member 320, the middle member 310 is not limited to this and may not be filled. That is, a cavity may exist between the upper member 320 and the middle member 310 .

In FIG. 16, upper member 320 has cover portion 322 and cover portion 324 covering the opposite side of cover portion 322 . Note that the upper member 320 may not have the cover portion 324 .

In the example shown in FIG. 16, middle member 310 is joined to cover portion 322 of top member 320 . Middle member 310 may be connected to cover portion 324 . Middle member 310 and upper member 320 may be integrally molded.

In the example shown in FIG. 16 , a joint portion 202 of the film material 200 is partially joined to the upper surface of the lower member 300 and the lower surface of the middle member 310 . The joint portion 202 of the film material 200 may be joined to only one of the lower member 300 and the middle member 310 . A boundary portion between the joint portion 202 and the projecting portion 204 of the film material 200 may be joined to the lower surface of the cover portion 322 .

In the example shown in FIG. 16, connector 400 is secured to cover portion 324 and middle member 310 . The connector 400 may be fixed only to the cover portion 324 of the cover portion 324 and the intermediate member 310 , or may be fixed only to the intermediate member 310 . The wiring 402 passes through the middle member 310 and is connected to the wiring 502 of the antenna 500 . A portion of the wiring 402 can be protected by the middle member 310 by passing the wiring 402 through the middle member 310 . Moreover, since the amount of the intermediate member 310 filled in the base material 100 can be reduced, the base material 100 can be made lighter.

Here, the middle member 310 needs to have a small-diameter hole because the wiring 502 needs to pass therethrough. However, in the process of molding the intermediate member 310, the design with holes increases the difficulty of molding.

FIG. 17 schematically shows another example of the film antenna 10. As shown in FIG. Here, differences from the film antenna 10 shown in FIG. 16 are mainly described. In the example shown in FIG. 17, the wiring 402 is connected to the wiring 502 without passing through the middle member 310 . By adopting a structure in which the wiring 402 does not pass through the intermediate member 310, the manufacturing of the film antenna 10 can be facilitated compared to the case where the wiring 402 passes through.

Here, the connector 400 may be used for connection with a wireless device (not shown). In this case, the connector 400 is connected with a communication cable (not shown) for connecting with the wireless device. When a communication cable is connected to the connector 400 for use, a force is applied to the connector 400 in the rotational direction due to the load applied to the communication cable, and a force is applied to the connector 400 in the pushing direction during connection work. . If the connector 400 is not sufficiently fixed, the force described above may move the connector 400 and break the wiring 402 .

FIG. 18 schematically shows another example of the film antenna 10. As shown in FIG. Here, differences from the film antenna 10 shown in FIG. 16 are mainly described. In the example shown in FIG. 18 , the intermediate member 310 is joined to the lower surface of the upper member 320 , extends in the height direction from the joint surface, and contacts the film material 200 . The middle member 310 is secured to the upper member 320 to secure the film material 200 . In the example shown in FIG. 18, a portion of connector 400 is located within lower member 300 . The wiring 402 passes through the lower member 300 and is connected to the wiring 502 of the antenna 500 . A portion of the wiring 402 can be protected by the lower member 300 by passing the wiring 402 through the lower member 300 . According to this, the connector 400 can be fixed, and breakage of the wiring 402 that is assumed when connecting a communication cable to the connector 400 can be prevented.

Here, when the connector 400 is arranged in the lower member 300 and the wiring 402 is passed through the lower member 300, it is necessary to prepare a small-diameter hole in the lower member 300, which increases the difficulty of molding.

FIG. 19 schematically shows another example of the film antenna 10. As shown in FIG. Here, differences from the film antenna 10 shown in FIG. 18 are mainly described. In the example shown in FIG. 19, wiring 402 is connected to wiring 502 without passing through lower member 300 . By adopting a structure in which the wiring 402 does not pass through the lower member 300, manufacturing of the film antenna 10 can be facilitated compared to the case where the wiring 402 passes through.

Here, if the film material 200 is peeled off from the lower member 300 inside the base material 100, the wiring 402 may be broken or the wiring 502 may be broken, resulting in failure of the antenna.

FIG. 20 schematically shows another example of the film antenna 10. As shown in FIG. Here, differences from the film antenna 10 shown in FIG. 16 are mainly described. In the example shown in FIG. 20, middle member 310 is joined to cover portion 324 of top member 320 . Middle member 310 is secured to cover portion 324 of top member 320 to secure film material 200 . Although the wiring 402 passes through the lower member 300 in FIG. 20, the wiring 402 does not have to pass through the lower member 300 as in the embodiment shown in FIG.

According to this, since the film material 200 is fixed not only to the lower member 300 but also to the intermediate member 310, the film material 200 is less likely to be peeled off from the lower member 300, and the durability of the antenna can be improved.

Here, depending on the installation method or installation location of the film antenna 10, the entire surface of the lower member 300 may not be installed on the installation target surface. For example, there is an obstacle on the installation target surface, the installation target surface is not flat, and interference between the obstacle and at least a part of the lower member 300 may prevent installation. In this case, it is necessary to change the installation direction of the film antenna 10 so that the lower member 300 does not interfere with obstacles on the installation target surface.

FIG. 21 schematically shows another example of the film antenna 10. As shown in FIG. Here, differences from the film antenna 10 shown in FIG. 5 are mainly described. Although FIG. 5 illustrates a configuration in which the film antenna 10 is installed on the installation target surface on which the lower member 300 is installed, the configuration is not limited to this. The film antenna 10 may have a configuration in which the lower member 300 does not come into contact with the installation target surface.

In the example shown in FIG. 21, lower member 300 is joined to cover portion 324 of upper member 320 . In the example shown in FIG. 21 , the joint portion 202 of the film material 200 has its upper surface joined to the intermediate member 310 and its lower surface partly joined to the upper surface of the lower member 300 . The joint portion 202 of the film material 200 may be joined to only one of the intermediate member 310 and the lower member 300 .

In the example shown in FIG. 21, the connector 400 is arranged above the lower member 300 . Connector 400 may be secured to cover portion 324 . The wiring 402 passes through the intermediate member 310 from the connector 400 and is connected to the wiring 502 .

In the film antenna 10 illustrated in FIG. 21, mainly the projecting portion 204 of the film material 200 and the bottom surface of the cover portion 324 of the upper member 320 may be installed on the installation target surface.

According to this, since the lower member 300 does not come into contact with the installation target surface, interference between the lower member 300 and obstacles existing on the installation target surface can be avoided, and the base material 100 can be installed even if there is an obstacle. can. Although FIG. 21 shows an example in which the entire lower member 300 does not come into contact with the installation target surface, the portion where the lower member 300 does not come into contact with the installation target surface may be a part of the lower member 300 .

Here, depending on the installation location of the film antenna, the substrate 100 may come into contact with surrounding articles, making installation difficult.

FIG. 22 schematically shows another example of the film antenna 10. As shown in FIG. Here, differences from the film antenna 10 shown in FIG. 21 are mainly described. In the example shown in FIG. 22, the connector 400 is arranged below the lower member 300 . Connector 400 may be secured to cover portion 324 . A wire 402 is connected from the connector 400 to 502 through the lower member 300 .

According to this, the cover portion 322 and the cover portion 324 can be shortened, and it is possible to prevent the substrate 100 from coming into contact with surrounding articles and making installation difficult.

FIG. 23 schematically shows another example of the film antenna 10. As shown in FIG. Here, differences from the film antenna 10 shown in FIG. 5 are mainly described. In the film antenna 10 shown in FIG. 23, the joint portion 202 of the film material 200 includes a portion 212 arranged on the upper surface of the lower member 300, a bent portion 214, and not arranged on the upper surface of the lower member 300. and a portion 216 that is positioned on the installation target surface. The wiring 402 is connected to the wiring 502 at the portion 216 of the joint portion 202 and is electrically connected to the antenna 500 .

In this way, by configuring the wiring 402 and the wiring 502 to be connected at the portion 216 of the joint portion 202 , the wiring 502 can be omitted from the portion 212 of the joint portion 202 . Thereby, the degree of freedom of deformation of the film material 200 can be increased. In the example shown in FIG. 23, the film material 200 is arranged along the shape of the lower member 300 . As a result, the resistance of the wiring 502 at the bent portion 214 does not increase, the wiring 502 does not break at the bent portion 214, and the gap between the film material 200 and the installation target surface can be prevented.

24 schematically shows another example of the film antenna 10. FIG. Here, differences from the film antenna 10 shown in FIG. 5 are mainly described.

The film material 200 has an encapsulating portion 206 enclosed in the substrate 100 and a projecting portion 208 protruding from the substrate 100 . In the example shown in Figure 24, the encasement portion 206 of the film material 200 is not slanted. The inner wrapper portion 206 may be an example of the first portion of the film material 200 . Projecting portion 208 may be an example of a second portion of film material 200 .

The lower member 300 has a base portion 332 on which the encapsulating portion 206 of the film material 200 is arranged on the upper surface 304, and an inclined portion 334 protruding from the base portion 332, on which the protruding portion 208 of the film material 200 is arranged. 334. The sloped portion 334 may slope from the height of the top surface of the base portion 332 to the height of the bottom surface of the base portion 332 . The base portion 332 and the inclined portion 334 have lower surfaces that are installed on the installation target surface on which the film antenna 10 is installed.

The middle member 310 is positioned over the inner envelope portion 206 of the film material 200 . Middle member 310 has connector 400 and wiring 402 .

The upper member 320 is positioned over the middle member 310 . Top member 320 covers one end of middle member 310 and has a cover portion 322 whose end may be located at the interface between inner envelope portion 206 and projecting portion 208 . Note that the upper member 320 may not have the cover portion 322 .

In the film antenna 10 illustrated in FIG. 24, the lower member 300 has the inclined portion 334, thereby preventing the formation of a gap between the film material 200 and the installation target surface.

Here, when the film antenna 10 is attached and installed on a glass surface, the appearance may be spoiled due to problems such as the generation of air bubbles during attachment and the twisting of the film material 200 . It is difficult to apply the label without causing such a problem, and it has been a burden on the person who performs the application work.

FIG. 25 schematically shows another example of the film antenna 10. As shown in FIG. Here, points different from FIG. 3 will be mainly described. A film antenna 10 illustrated in FIG. 25 includes a plate-like member 900 arranged under a base material 100 and a film material 200 .

FIG. 26 schematically shows an example of a ZZ section of the film antenna 10 illustrated in FIG. Here, points different from FIG. 5 will be mainly described. In the film antenna 10 illustrated in FIG. 26 , a plate member 900 is joined to the lower member 300 , part of the joining portion 202 of the film material 200 , and the projecting portion 204 .

In the film antenna 10 illustrated in FIG. 26, a plate member 900 is fixed to the installation target surface. The plate member 900 is, for example, adhered to the installation target surface.

The plate-shaped member 900 may be made of a transparent material, and may not obstruct the scenery when installed on glass or the like. The plate member 900 may be transparent as a whole. The plate member 900 may be partially transparent. For example, the portion of the plate member 900 where the projecting portion 204 of the film material 200 is arranged is transparent, and the portion where the substrate 100 is arranged is opaque. Any material may be used for the plate member 900 as long as it satisfies the requirements. The material of the plate-like member 900 is desirably a material that can suppress the heat generated in the middle member 310 from being transferred to the installation target surface.

The structure of the base material 100 and the film material 200 arranged on the plate member 900 may be a structure in which the lower member 300 has a base portion 306 and an inclined portion 307 as shown in FIG. The structure of the base material 100 and the film material 200 arranged on the plate-like member 900 is as shown in FIG. A structure in which only a part of the inclined portion of is arranged on the lower member 300 may be employed. 8, the lower member 300 has a base portion 306 and an inclined portion 307, and the inclined portion 307 has the structure shown in FIG. A structure having a shape that is shorter along the direction from the joint portion 202 to the protruding portion 204 than the inclined portion 307 of the lower member 300 illustrated in FIG. Further, the structure of the base material 100 and the film material 200 arranged on the plate member 900 is such that the lower member 300 is entirely inclined from the upper member 320 toward the installation target surface as shown in FIG. may be In addition, the structure of the base material 100 and the film material 200 arranged on the plate member 900 may be the structure shown in FIGS. 10 to 24. FIG.

According to this, the film material 200 is pre-arranged on the plate-like member 900, and the person who attaches the film antenna 10 can simply place the plate-like member 900 on the surface to be installed, thus burdening the attachment work. can be reduced.

Although the present invention has been described above using the embodiments, the technical scope of the present invention is not limited to the scope described in the above embodiments. It is obvious to those skilled in the art that various modifications or improvements can be made to the above embodiments. It is clear from the description of the scope of the claims that forms with such modifications or improvements can also be included in the technical scope of the present invention.

The execution order of each process such as actions, procedures, steps, and stages in the devices, systems, programs, and methods shown in the claims, the specification, and the drawings is etc., and it should be noted that they can be implemented in any order unless the output of the previous process is used in the subsequent process. Regarding the operation flow in the claims, the specification, and the drawings, even if the description is made using "first," "next," etc. for convenience, it means that it is essential to carry out in this order. not a thing

Reference Signs List 10 film antenna, 30 fastener, 60 film antenna, 100 base material, 102 gap, 104 recess, 200 film material, 202 joining portion, 204 protruding portion, 206 enclosing portion, 208 protruding portion, 212 portion, 214 bending portion, 216 portion, 220 lower end upper surface, 300 lower member, 302 lower surface, 304 upper surface, 306 base, 307 inclined portion, 308 extending portion, 309 extending portion, 310 intermediate member, 320 upper member, 322 cover portion, 324 cover portion, 332 base, 334 inclined portion, 400 connector, 402 wiring, 500 antenna, 502 wiring, 600 base material, 610 lower member, 620 intermediate member, 630 upper member, 700 film material, 710 antenna, 712 wiring, 800 connector, 802 wiring, 900 board shaped member

Claims (23)

A film antenna,
a substrate;
a film material containing an antenna, having a first portion bonded to the base material and a second portion protruding from the base material,
The base material is
a lower member having an upper surface on which at least part of the first portion of the film material is arranged and having a lower surface to be installed on an installation target surface on which the film antenna is installed;
a middle member disposed on the first portion of the film material;
an upper member disposed on the middle member;
The first portion of the film material is joined to the lower surface of the intermediate member, and at least a portion of the film material is inclined downward in a direction in which the second portion of the film material projects, The second portion of the film material protrudes from the lower end of the base material,
A film antenna, wherein at least part of the inclined portion of the first portion of the film material is arranged on the lower member. 2. A film antenna according to claim 1, wherein only a portion of said slanted portion of said first portion of said film material is disposed on said lower member. A film antenna,
a substrate;
a film material containing an antenna, having a first portion bonded to the base material and a second portion protruding from the base material,
The base material is
a lower member having an upper surface on which at least part of the first portion of the film material is arranged and having a lower surface to be installed on an installation target surface on which the film antenna is installed;
a middle member disposed on the first portion of the film material;
an upper member disposed on the middle member;
The first portion of the film material is joined to the lower surface of the intermediate member, and at least a portion of the film material is inclined downward in a direction in which the second portion of the film material projects, The second portion of the film material protrudes from the lower end of the base material,
The base material is a film antenna, wherein the upper member is the longest in the projecting direction in which the second portion of the film material projects, and the lower member is the shortest in the projecting direction. A film antenna,
a base material;
a film material containing an antenna, having a first portion bonded to the base material and a second portion protruding from the base material,
The base material is
a lower member having an upper surface on which at least part of the first portion of the film material is arranged and having a lower surface to be installed on an installation target surface on which the film antenna is installed;
a middle member disposed on the first portion of the film material;
an upper member disposed on the middle member;
The first portion of the film material is joined to the lower surface of the intermediate member, and at least a portion of the film material is inclined downward in a direction in which the second portion of the film material projects, The second portion of the film material protrudes from the lower end of the base material,
The base material is a film antenna, wherein the lower member is shorter than the middle member in the projecting direction in which the second portion of the film material projects. A film antenna,
a base material;
a film material containing an antenna, having a first portion bonded to the base material and a second portion protruding from the base material,
The base material is
a lower member having an upper surface on which at least part of the first portion of the film material is arranged and having a lower surface to be installed on an installation target surface on which the film antenna is installed;
a middle member disposed on the first portion of the film material;
an upper member disposed on the middle member;
The first portion of the film material is joined to the lower surface of the intermediate member, and at least a portion of the film material is inclined downward in a direction in which the second portion of the film material projects, The second portion of the film material protrudes from the lower end of the base material,
The base material is a film antenna, wherein the lower member is shorter than the upper member in the projecting direction in which the second portion of the film material projects. A film antenna,
a substrate;
a film material containing an antenna, having a first portion bonded to the base material and a second portion protruding from the base material,
The base material is
a lower member having an upper surface on which at least part of the first portion of the film material is arranged and having a lower surface to be installed on an installation target surface on which the film antenna is installed;
a middle member disposed on the first portion of the film material;
an upper member disposed on the middle member;
The first portion of the film material is joined to the lower surface of the intermediate member, and at least a portion of the film material is inclined downward in a direction in which the second portion of the film material projects, The second portion of the film material protrudes from the lower end of the base material,
A film antenna, wherein an upper surface of a lower end of the inclined portion of the first portion of the film material is covered with the upper member. A film antenna,
a substrate;
a film material containing an antenna, having a first portion bonded to the base material and a second portion protruding from the base material,
The base material is
a lower member having an upper surface on which at least part of the first portion of the film material is arranged and having a lower surface to be installed on an installation target surface on which the film antenna is installed;
a middle member disposed on the first portion of the film material;
an upper member disposed on the middle member;
The first portion of the film material is joined to the lower surface of the intermediate member, and at least a portion of the film material is inclined downward in a direction in which the second portion of the film material projects, The second portion of the film material protrudes from the lower end of the base material,
A film antenna, wherein when the film antenna is installed on the installation target surface, a gap surrounded by the installation target surface, the film material, and the lower member is generated inside the base material. A film antenna,
a substrate;
a film material containing an antenna, having a first portion bonded to the base material and a second portion protruding from the base material;
a plate-shaped member at least partially transparent on which the base material and the film material are arranged;
The base material is
a lower member having an upper surface on which at least part of the first portion of the film material is arranged and having a lower surface installed on the plate-like member;
a middle member disposed on the first portion of the film material;
an upper member disposed on the middle member;
The first portion of the film material is joined to the lower surface of the intermediate member, and at least a portion of the film material is inclined downward in a direction in which the second portion of the film material projects, A film antenna, wherein the second portion of the film material protrudes from a lower end of the base material. 9. The film antenna according to claim 8, wherein said plate member is entirely made of a transparent material. A part of the plate member is made of a transparent material,
9. The film antenna according to claim 8, wherein a portion of said plate-shaped member where said second portion of said film material is arranged is transparent, and a portion where said base material is arranged is opaque. A film antenna,
a substrate;
a film material containing an antenna, having a first portion bonded to the base material and a second portion protruding from the base material,
The base material is
a lower member having an upper surface on which at least part of the first portion of the film material is arranged and having a lower surface to be installed on an installation target surface on which the film antenna is installed;
a middle member disposed on the first portion of the film material;
an upper member disposed on the middle member;
The upper member has a first cover portion arranged in a projecting direction in which the second portion of the film material projects,
At least a portion of the first portion of the film material is inclined downward in a projecting direction of the second portion of the film material, and the second portion of the film material protruding from the lower end of the first cover portion,
A film antenna, wherein a cavity exists between the upper member and the middle member. The base material is
a connector arranged on the upper side of the middle member;
12. The film antenna according to claim 11, further comprising wiring electrically connecting said connector and said antenna. 13. The film antenna according to claim 12, wherein said wiring passes through said middle member from said connector and is connected to said antenna. 13. The film antenna according to claim 12, wherein said wiring is connected to said antenna without passing through said middle member from said connector. 12. The film antenna according to claim 11, wherein the intermediate member is joined to the lower surface of the upper member, extends in the height direction from the joining surface, and contacts the first portion of the film material. The upper member has a second cover portion arranged in a direction opposite to the projecting direction,
12. The film antenna according to claim 11, wherein said intermediate member is joined to said first cover portion or said second cover portion. The base material is
a connector disposed on the lower member;
12. The film antenna according to claim 11, further comprising wiring electrically connecting said connector and said antenna. 18. The film antenna according to claim 17, wherein said wiring passes through said lower member from said connector and is connected to said antenna. 18. The film antenna according to claim 17, wherein said wiring is connected to said antenna without passing through said lower member from said connector. A film antenna,
a substrate;
a film material containing an antenna, having a first portion bonded to the base material and a second portion protruding from the base material,
The base material is
a lower member having an upper surface on which at least part of the first portion of the film material is arranged and having a lower surface to be installed on an installation target surface on which the film antenna is installed;
a middle member disposed on the first portion of the film material;
an upper member disposed on the middle member;
The intermediate member is joined to the lower surface of the upper member, extends in the height direction from the joining surface, and contacts the first portion of the film material,
The second portion of the film material protrudes from the lower end of the base material,
A film antenna, wherein a cavity exists between the upper member and the middle member. A film antenna,
a base material;
a film material containing an antenna, having a first portion bonded to the base material and a second portion protruding from the base material,
The base material is
a lower member having an upper surface on which at least part of the first portion of the film material is arranged;
a middle member disposed on the first portion of the film material;
an upper member disposed on the middle member;
The upper member has a first cover portion arranged in a projecting direction in which the second portion of the film material projects, and a second cover portion arranged in a direction opposite to the projecting direction,
At least a portion of the first portion of the film material is inclined downward in a projecting direction of the second portion of the film material, and the second portion of the film material protruding from the lower end of the first cover portion,
A film antenna, wherein the second portion of the film material and the lower end of the second cover portion are installed on an installation target surface. The base material is
a connector arranged above the lower member;
22. The film antenna according to claim 21, further comprising wiring electrically connecting said connector and said antenna. The base material is
a connector arranged on the lower side of the lower member;
22. The film antenna according to claim 21, further comprising wiring electrically connecting said connector and said antenna.

Images