Superstructure of a vehicle

Abstract

A superstructure of a vehicle includes a roof covering an upper portion of a passenger compartment, an antenna device including a housing disposed on an upper surface of the roof and an antenna housed in the housing and transmitting and receiving electric waves, a resin member disposed adjacent to the antenna device, and a metal member mounted to the resin member and forming a metal layer. The antenna transmits and receives electric waves directed toward the upper surface of the roof and an upper surface of the resin member. The metal member is disposed to reflect the electric waves directed toward the upper surface of the resin member.

Description

Technical Field

[0001] This invention relates to a superstructure of a vehicle such as an automobile, and more particularly to a superstructure of a vehicle having an antenna device on the roof of the vehicle. Background Technology

[0002] Traditionally, antenna devices in vehicles such as automobiles are mounted on the roof. These antenna devices typically house one or more antennas for in-vehicle communication equipment. In recent years, due to design considerations, vehicles with shark fin-shaped antenna devices, such as those disclosed in Patent Document 1, are commonly seen.

[0003] Traditionally, antennas transmit and receive radio waves directed towards the vehicle. However, in recent years, advancements in V2X communication, such as vehicle-to-vehicle (V2V) and vehicle-to-roadside (V2I) communication, have necessitated the integration of V2X antennas into antenna systems. This necessitates the appropriate transmission and reception of radio waves along the vehicle roof as well. Consequently, for vehicles such as those with resin rear window spoilers (also known as rear window deflectors) on the tailgate or resin roof rails, the following technical challenges arise.

[0004] In these vehicles, antenna devices and rear window spoilers are positioned close to the roof. These components allow radio waves to pass through the resin-made rear window spoiler. However, complete transmission is practically impossible; radio waves directed towards the upper surface of the rear window spoiler often penetrate its interior, where they are irregularly reflected, sometimes inducing interference. This interference degrades the transmission and reception performance of radio waves, creating a situation that cannot be ignored in ensuring the accuracy of V2X communication.

[0005] Existing technical documents

[0006] Patent documents

[0007] Patent Document 1: Japanese Patent Application Publication No. 2018-152824 Summary of the Invention

[0008] The present invention was made in view of the above circumstances, and its object is to provide a technology that can improve the transmission and reception performance of an antenna device in a vehicle equipped with an antenna device on the roof.

[0009] Therefore, the upper structure of the vehicle of the present invention comprises: a metal roof covering the upper part of the vehicle cabin space; a first antenna device including a housing and an antenna, the housing being disposed on the upper surface of the roof, the antenna being housed within the housing and transmitting and receiving radio waves, the first antenna device being disposed in the vehicle rear side region of the upper surface of the roof; a resin component integrally disposed in the vehicle rear side region of the first antenna device; a metal component mounted on the resin component and forming a metal layer; and a rear window disposed at the rear of the roof. A portion of the window is located below the resin component; and a second antenna device comprising an antenna disposed throughout the vehicle width direction over the upper portion of the rear window covered from above by the rear window spoiler, which is the resin component. The antenna of the first antenna device transmits and receives radio waves directed toward the upper surface of the roof and toward the upper surface of the resin component. The metal component is configured to reflect the radio waves directed toward the upper surface of the resin component, and the metal component is mounted in the resin component at a position that does not overlap with the antenna of the second antenna device when viewed from above. Attached Figure Description

[0010] Figure 1 This is a rear perspective view of a vehicle (automobile) with the upper structure of the vehicle according to the first embodiment of the present invention.

[0011] Figure 2 This is a rear side view of the vehicle.

[0012] Figure 3 This is a top-rear view of the vehicle.

[0013] Figure 4 This is a rear sectional view of the vehicle. Figure 3 (Sectional view along line IV-IV).

[0014] Figure 5 This is a characteristic diagram representing the reception strength characteristics of the antenna device of the vehicle.

[0015] Figure 6 This is a characteristic diagram showing the reception strength characteristics of the antenna device of the comparative example vehicle.

[0016] Figure 7 This is a top view of the rear of the vehicle according to the second embodiment.

[0017] Figure 8 This is a rear sectional view of the vehicle. Figure 7 (Sectional view along line VIII-VIII).

[0018] Figure 9 This is a rear sectional view of a modified vehicle. Detailed Implementation

[0019] Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings.

[0020] [First Implementation Method]

[0021] Figure 1 This is a rear perspective view of a vehicle using the superstructure of the present invention. Figure 2 This is a rear side view of the vehicle.

[0022] Figure 1 and Figure 2 The vehicle 1 shown is a five-door hatchback car with a body 2, front doors (not shown), rear doors 4 and a tailgate 5. The body 2 has a roof 3 that covers the upper part of the passenger compartment. The front doors, rear doors 4 and tailgate 5 are supported on the body 2 in an openable and closable manner via hinges (not shown).

[0023] At the rear of the vehicle 1, there is a pair of left and right rear combination lights 6. The rear combination lights 6 function as parking lights and turn signals. In this embodiment, the rear combination lights 6 have a split structure consisting of an outer light 6a assembled to the vehicle body 2 and an inner light 6b assembled to the tailgate 5.

[0024] Vehicle 1 is equipped with an in-vehicle wireless communication device including an ECU (not shown) and an antenna device 10 (equivalent to the "first antenna device" of the present invention), with the antenna device 10 disposed on the upper surface of the roof 3. This in-vehicle wireless communication device is capable of performing vehicle-to-vehicle and vehicle-to-roadside-infrastructure (V2X) communication. Furthermore, in the following description, these vehicle-to-vehicle and vehicle-to-roadside-infrastructure (V2X) communications are collectively referred to as V2X communication.

[0025] The antenna device 10 is disposed on the upper surface of the roof 3. Specifically, the antenna device 10 is disposed in the rear end region and the central part in the width direction of the upper surface of the metal roof panel 3a, which is made of thin steel plate or the like.

[0026] The antenna device 10 is a shark fin-shaped roof antenna, which has a resin housing 11a and an antenna 11b. The housing 11a is fixed to the upper surface of the roof 3, and the antenna 11b is housed in the housing 11a for transmitting and receiving radio waves for V2X communication.

[0027] In this example, the frequency band of the V2X communication radio waves is the 5.8GHz to 5.9GHz band (5.850GHz to 5.925GHz). Therefore, the antenna 11b has an electrical length capable of transmitting and receiving radio waves in this 5.8GHz to 5.9GHz band. Alternatively, the 700MHz band can also be used as the frequency band for V2X communication radio waves.

[0028] The rear hatch 5 is located behind the roof 3. The rear hatch 5 has a metal hatch body 12, a rear window 16, a rear window spoiler 18 (equivalent to the "resin component" of the present invention), and a reflector 22 (equivalent to the "metal component" of the present invention) respectively assembled to the hatch body 12.

[0029] The front end (upper end) of the trunk door body 12 is connected to a hinge (not shown) located at the rear end of the roof 3. Through this structure, the trunk door 5 is supported by its front end (hinge) as a fulcrum, allowing it to swing vertically relative to the vehicle body 2. This swinging of the trunk door 5 opens and closes the opening located at the rear of the vehicle body 2.

[0030] Figure 3 This is a top-rear view of vehicle 1. Figure 4 This is a rear sectional view of vehicle 1. Figure 3 (IV-IV line sectional view). Such as these Figure 3 and Figure 4 As shown, the main body 12 of the door is constructed by joining an outer panel 13a and an inner panel 13b, which are respectively formed from thin steel plates or the like.

[0031] A window opening 14 is provided near the front (upper) end of the door body 12, and the rear window 16 is assembled to the window opening 14. Specifically, a flange 14a is formed around the entire circumference of the window opening 14 at its inner edge. The rear window 16 overlaps with the flange 14a via a sealing member (not shown), and the flange 14a, the rear window 16, and the sealing member are bonded to each other with an adhesive.

[0032] The rear window spoiler 18 is positioned above the front end of the main body 12 of the door. The rear window spoiler 18 has an outer panel 19a (corresponding to the "upper resin layer" of the present invention) and an inner panel 19b (corresponding to the "lower resin layer" of the present invention) formed from resin materials such as polycarbonate resin and ABS, respectively, and is formed by joining them together. Alternatively, the rear window spoiler 18 (outer panel 19a and inner panel 19b) may also be formed from fiber-reinforced resin containing glass fiber and carbon fiber.

[0033] The rear window spoiler 18 has a central portion 20a extending in the vehicle width direction and having a rectangular shape when viewed from above, and a pair of side portions 20b continuous with the left and right ends of the central portion 20a and having a triangular shape when viewed from above. The width of the rear window spoiler 18 (width in the vehicle width direction) is slightly wider than the width of the front end of the door body 12. Therefore, as Figures 1-3 As shown, a portion of each side portion 20b is located outside the door body 12 in the vehicle width direction.

[0034] The central portion 20a is fastened to the front end of the trunk door body 12 by fastening components such as bolts and nuts (not shown). As a result, the rear window spoiler 18 is fixed to the trunk door 5 and can move together with the trunk door 5.

[0035] The width of the central portion 20a in the vehicle width direction is set to be equal to or slightly larger than the width of the front end portion of the rear window 16 in the same direction. The front end of the central portion 20a is located at approximately the same position as the front end of the door body 12, and the rear end of the central portion 20a is located above the area of ​​the front end portion of the rear window 16. That is, the rear window spoiler 18 (central portion 20a) covers a portion of the rear window 16 (a portion of the front end portion) from above.

[0036] The side portions 20b extend downwards from the left and right ends of the central portion 20a toward the C-pillar 7 of the vehicle body 2. When the tailgate 5 is closed, a gap is provided between the top (bottom) of each side portion 20b and the C-pillar 7, thereby the side portions 20b are disposed without contact with the vehicle body 2 (C-pillar 7).

[0037] The reflector 22 is a component that forms a metal layer on the rear window spoiler 18 for reflecting radio waves used in V2X communication, and is mounted on the upper surface of the rear window spoiler 18 in a stacked state. Specifically, the reflector 22 is a thin sheet of metal made of iron, aluminum, copper, or the like. The reflector 22 has a shape that is slightly smaller than and similar to the central portion 20a of the rear window spoiler 18 when viewed from above. Furthermore, a recess 21 with the same outline as the reflector 22 is formed on the upper surface of the central portion 20a (outer panel 19a). With the reflector 22 embedded in the recess 21, the reflector 22 and the central portion 20a are fixed to each other by adhesive. Alternatively, the reflector 22 and the central portion 20a can also be fixed by fasteners such as bolts and nuts.

[0038] The upper surface of the central part 20a is approximately the same as the upper surface of the reflector 22. For example... Figure 4 As shown, the upper surface of the reflector 22 is disposed within an imaginary surface formed by extending, for example, the upper surface of the roof 3a toward the rear of the vehicle.

[0039] [Effects]

[0040] The vehicle 1 described above (the upper structure of vehicle 1) includes: a roof 3 that covers the upper part of the passenger compartment; an antenna device 10 that includes a housing 11a and an antenna 11b, the housing 11a being disposed on the upper surface of the roof 3 and the antenna 11b being housed within the housing 11a and transmitting and receiving radio waves; a rear window spoiler 18 that is disposed adjacent to the antenna device 10; and a reflector 22 that is mounted on the rear window spoiler 18 and forms a metal layer thereon.

[0041] According to the vehicle 1, electromagnetic waves directed towards the upper surface of the rear window spoiler 18 are reflected (positive reflection) by the reflector 22 (metal layer), suppressing the electromagnetic waves from entering the rear window spoiler 18. Therefore, electromagnetic interference caused by irregular reflection of electromagnetic waves inside the rear window spoiler 18 is effectively suppressed.

[0042] Figure 5 This is a characteristic diagram showing the reception strength characteristics of the antenna device 10 of the vehicle 1 according to the above embodiment for radio waves. Figure 6 This is a characteristic graph showing the reception strength characteristics of the antenna device 10 of a comparative example vehicle, which differs from the vehicle 1 of the above embodiment only in that it lacks a reflector (22). All graphs indicate that the reception strength decreases the closer to the center.

[0043] As shown in these characteristic diagrams, in the comparative example vehicle, large fluctuations in reception strength can be observed, particularly in the range of 30° to 150°, at the rear of vehicle 1. On the other hand, in the vehicle 1 of the above embodiment, no large fluctuations in reception strength are observed within the same range (30° to 150°), and the reception strength remains approximately constant. Furthermore, when comparing the reception strength within the aforementioned range (30° to 150°), the reception strength of the comparative example vehicle is relatively weaker compared to that of the vehicle 1 of the embodiment.

[0044] This is presumably because, in the comparative example vehicle, electromagnetic waves directed towards the upper surface of the rear window spoiler 18 enter its interior, and a portion of these waves experience electromagnetic interference due to irregular reflections. In contrast, in the vehicle 1 of the embodiment, such electromagnetic interference is suppressed. Furthermore, in the comparative example vehicle, the reception strength within the aforementioned range (30° to 150°) is relatively weaker compared to the reception strength of the vehicle 1 of the embodiment. This is presumably because the effect of weakened reception strength due to the aforementioned electromagnetic interference is significantly evident.

[0045] In this way, according to the structure of the vehicle 1 with reflector 22, the generation of radio wave interference caused by the rear window spoiler 18 can be effectively suppressed. Therefore, according to the structure of this vehicle 1, compared with a vehicle without reflector 22 (the vehicle of the comparative example), the transmission and reception performance of the antenna device 10 for radio waves can be improved, thereby improving the communication accuracy of V2X communication.

[0046] In particular, according to the structure of the above embodiment, the reflector 22 is a thin metal plate, embedded in the recess 21 formed in the rear window spoiler 18 (outer panel 19a) and fixed with adhesive. Therefore, it also has the advantage of being able to achieve the above-described effects with a very simple and inexpensive structure.

[0047] [Second Implementation]

[0048] Figure 7 This is a rear top view of vehicle 1', which is the upper structure of a vehicle according to the second embodiment of the present invention. Figure 8 This is a rear sectional view of vehicle 1'.

[0049] In the second embodiment, the vehicle 1' has an antenna device 25 for radio (AM / FM) reception (equivalent to the second antenna device of the present invention) in the area of ​​the upper portion of the rear window 16, that is, the area covered from above by the rear window spoiler 18 (corresponding to "a portion of the area" in the present invention). The antenna device 25 includes a glass antenna 25a (referred to as antenna 25a), which is printed or attached to the interior side of the rear window 16, or embedded in the rear window 16. The antenna 25a is provided throughout the width direction (vehicle width direction) of the area of ​​the upper portion of the rear window 16.

[0050] In such a vehicle 1', if the reflector 22 is arranged across the entire central portion 20a of the rear window spoiler 18 as in the first embodiment, it may hinder the antenna device 25 from receiving radio waves. Therefore, in the vehicle 1' of the second embodiment, as... Figure 7 and Figure 8 As shown, a reflector 22 is provided only in the central part 20a at a position that does not overlap with the antenna 25a when viewed from above. Specifically, the reflector 22 is provided only in the front half of the central part 20a.

[0051] The fixing structure of the reflector 22 relative to the rear window spoiler 18 is the same as in the first embodiment. That is, the reflector 22 is embedded in the recess 21 formed on the upper surface of the central portion 20a (outer panel 19a), and the reflector 22 and the central portion 20a are fixed to each other by adhesive.

[0052] According to this second embodiment of the vehicle 1′ (the upper structure of the vehicle 1′), since a reflector 22 is provided at a position that does not overlap with the antenna 25a of the antenna device 25 for radio (AM / FM) reception, the reception of radio waves can be improved without hindering the reception of radio waves, thus improving the transmission and reception performance of the antenna device 10 for V2X communication.

[0053] Here, an example of an antenna device 25 for radio (AM / FM) reception (equivalent to the "second antenna device" of the present invention) provided in the rear window 16 has been described. However, the same structure can also be used when an antenna device for television reception or an antenna device for mobile phones is provided in the rear window 16. According to this structure, it is possible to improve the transmission and reception performance of the antenna device 10 for V2X communication without hindering the reception of television waves or the transmission and reception of mobile phone waves.

[0054] [Variations, etc.]

[0055] The superstructures of vehicles 1 and 1' described above are examples of preferred embodiments of the superstructures of vehicles according to the present invention, and their specific structures can be appropriately modified without departing from the spirit of the present invention. For example, various structures as follows can also be adopted.

[0056] (1) In the vehicle 1 of the above embodiments, the reflector 22 is configured to overlap with the upper surface of the rear window spoiler 18 (central part 20a). However, as Figure 9 As shown, the reflector 22 can also be disposed in a stacked state between the outer panel 19a and the inner panel 19b of the rear window spoiler 18 (central part 20a). Specifically, recesses 26a and 26b are formed on the opposite surfaces of the outer panel 19a and the inner panel 19b, respectively, and the reflector 22 is disposed between the two panels 19a and 19b in a state where it is embedded in these recesses 26a and 26b.

[0057] In this structure, radio waves enter the upper outer panel 19a but are reflected by the reflector 22 (positive reflection) instead of the lower inner panel 19b. Therefore, compared to the case without the reflector 22, the generation of radio wave interference is suppressed. Thus, with such a structure, the transmission and reception performance of the antenna device 10 is also improved.

[0058] (2) In the above embodiments, as an example of the "metal component" of the present invention, a thin metal plate (reflector 22) made of iron, aluminum, copper, etc., is installed on the rear window spoiler 18. However, the present invention is not limited to this structure. That is, the "metal component" of the present invention can be any component that is installed on the rear window spoiler 18 (resin component) and can form a metal layer. Therefore, the "metal component" is, for example, a surface treatment layer of metal, that is, a component that is applied to the upper surface (i.e., at least the upper surface of the outer panel 19a) or the interior (i.e., at least the upper surface of the inner panel 19b) of the rear window spoiler 18 by coating, wet plating, dry plating (evaporation), etc.

[0059] According to this structure, compared with a structure made of thin metal plates, the "metal component" can achieve thinning and weight reduction. In addition, the "metal component" and the rear window spoiler are highly integrated, and the transmission and reception performance of the antenna device 10 can be improved.

[0060] (3) In each of the above embodiments, a reflector 22 is provided only in the central part 20a of the rear window spoiler 18, but a reflector 22 may also be provided in the same way for the side part 20b.

[0061] (4) In addition to V2X communication, the vehicle-mounted wireless communication device may also have the function of receiving radio waves from navigation satellites (GNSS, Global Navigation Satellite System) and conducting mobile phone communication. In this case, in addition to the antenna 11b used for transmitting and receiving radio waves for V2X communication, the antenna device 10 also includes an antenna for receiving radio waves from navigation satellites for GNSS and an antenna for transmitting and receiving radio waves for mobile phone communication.

[0062] (5) In the above embodiments, the present invention is applied to a vehicle 1 having a rear window spoiler 18 (resin component) behind the antenna device 10, but the present invention can also be applied to other vehicles. For example, the present invention can also be applied to a vehicle roof with a resin roof beam. In this case, by stacking metal components such as thin metal sheets on the roof beam, it is expected to achieve the same structural effect as in the above embodiments.

[0063] The present invention can be summarized as follows.

[0064] An aspect of the present invention provides a vehicle superstructure comprising: a roof covering the upper part of the vehicle cabin space; an antenna device including a housing and an antenna disposed on the upper surface of the roof, the housing being housed within the housing and transmitting and receiving radio waves; a resin component disposed adjacent to the antenna device; and a metal component mounted on the resin component and forming a metal layer thereon, the antenna transmitting and receiving radio waves directed toward the upper surface of the roof and the upper surface of the resin component, the metal component being configured to reflect the radio waves directed toward the upper surface of the resin component.

[0065] In this context, the term "installation" in the above description of "metal component, which is installed on resin component and forms a metal layer" refers not only to mechanical installation via bolts and nuts, but also to bonding, painting, plating, etc.

[0066] According to the vehicle's superstructure, radio waves directed towards the upper surface of the resin component are reflected by the metal component (positive reflection). Therefore, the irregular reflection of radio waves directed towards the upper surface of the resin component, which would otherwise cause radio wave interference, is suppressed. As a result, the antenna device's transmission and reception performance for radio waves is improved.

[0067] In the above structure, preferably, the metal component is mounted on the upper surface of the resin component.

[0068] According to this structure, a metal layer based on the metal component is formed on the upper surface of the resin component, thereby suppressing electromagnetic waves directed towards the upper surface of the resin component from entering the interior of the resin component. Therefore, electromagnetic interference caused by irregular reflection of the electromagnetic waves within the resin component can be suppressed to a greater extent.

[0069] In this case, it is preferable that the metal component is a metal plate mounted on the upper surface of the resin component.

[0070] According to this structure, a simple and inexpensive structure that mounts a metal plate to the upper surface of a resin component can achieve the aforementioned effects.

[0071] In the superstructure of the vehicle described above, the antenna device is disposed in the area on the rear side of the upper surface of the roof.

[0072] In recent years, it has become common to see shark fin-shaped antenna devices installed on the rear side of the vehicle's roof. Various resin components are sometimes used in this rear area, and the transmission and reception performance of the antenna device is easily affected by these resin components. Therefore, it can be said that the above-described vehicle superstructures are useful when such an antenna device is installed on the rear side of the vehicle's roof.

[0073] Furthermore, in the superstructure of the vehicle described above, the resin component is disposed in the area on the rear side of the vehicle where the antenna device is located.

[0074] In such a structure, considering that the transmission and reception performance of the antenna device is easily affected by the resin components, for example when communicating with subsequent vehicles, the superstructure of the vehicle described above is useful in cases where the resin components are located in the area behind the antenna device on the rear side of the vehicle.

[0075] In addition, when the resin component has an upper resin layer and a lower resin layer, the metal component may be disposed between the upper resin layer and the lower resin layer.

[0076] In this structure, radio waves directed towards the upper surface of the resin component can penetrate the upper resin layer, but they do not penetrate the lower resin layer and are reflected (positive reflection) by the metal component (metal layer). Therefore, compared to the case without a metal component, radio wave interference caused by irregular reflection of radio waves within the resin component is suppressed. Thus, with this structure, the transmission and reception performance of the antenna device can also be improved.

[0077] In addition, the metal component may be a surface treatment layer of metal.

[0078] According to this structure, it is possible to achieve thinning and weight reduction of metal components (metal layers), and also to achieve a high degree of integration between metal components and resin components, thereby improving the antenna device's performance in transmitting and receiving radio waves.

[0079] In the superstructure of the vehicles described above, the radio waves are radio waves in the frequency band used in V2X communication.

[0080] In V2X communication, appropriate transmission and reception of radio waves are required in directions along the roof panel and slightly downwards for vehicle-to-vehicle and vehicle-to-infrastructure communication. Therefore, when the resin component and antenna device are configured adjacent to each other, the reliability of transmitting and receiving radio waves pointing towards the upper surface of the resin component affects the communication accuracy of V2X. Thus, it can be said that the superstructure of the vehicle described above is particularly useful when the radio waves are in the frequency bands used in V2X communication (700MHz band, 5.8GHz band, and 5.9GHz band).

[0081] Furthermore, in the superstructure of the vehicle described above, it is preferable that, when the antenna device is defined as the first antenna device, the superstructure of the vehicle further includes: a rear window disposed behind the roof, a portion of which is located below the resin component; and a second antenna device comprising an antenna disposed in the portion of the rear window, wherein the metal component is mounted in the resin component at a position that does not overlap with the antenna of the second antenna device when viewed from above.

[0082] According to this structure, the transmission and reception of radio waves by the second antenna device in the rear window can be improved without hindering the transmission and reception performance of the first antenna device.

[0083] In the superstructure of the vehicles described above, the resin component is a rear window spoiler.

[0084] In hatchback vehicles, for example, a rear window spoiler is provided at the front (upper) end of the rear door for reasons such as improving driving performance and design. The rear window spoiler has a relatively large area; if an antenna device is positioned adjacent to the resin rear window spoiler, it may be affected by the spoiler (the aforementioned radio wave interference), thus reducing the antenna device's radio wave transmission and reception performance. Therefore, the superstructure of the vehicles described above is particularly useful as the superstructure of vehicles equipped with a rear window spoiler, which is a resin component.

Claims

1. A superstructure for a vehicle, characterized in that, have: A metal roof that covers the upper part of the vehicle's interior space; A first antenna device comprising a housing and an antenna, the housing being disposed on the upper surface of the vehicle roof, the antenna being housed within the housing and transmitting and receiving radio waves, the first antenna device being disposed in the area of ​​the upper surface of the vehicle roof on the rear side of the vehicle. A resin component, which is integrally disposed in the area at the rear of the vehicle of the first antenna device; a metal component, which is mounted on the resin component and forms a metal layer thereon; A rear window, which is located at the rear of the roof, with a portion of the rear window situated below the resin component; as well as The second antenna device comprises an antenna disposed throughout the vehicle width direction in the upper portion of the rear window, which is covered from above by the rear window spoiler, which is a resin component. The antenna of the first antenna device transmits and receives radio waves directed towards the upper surface of the vehicle roof and the upper surface of the resin component. The metal component is configured to reflect the radio waves directed toward the upper surface of the resin component, and the metal component is mounted in the resin component at a position that does not overlap with the antenna of the second antenna device when viewed from above the vehicle.

2. The upper structure of the vehicle according to claim 1, characterized in that, The metal component is mounted on the upper surface of the resin component.

3. The upper structure of the vehicle according to claim 2, characterized in that, The metal component is composed of a metal plate mounted on the upper surface of the resin component.

4. The upper structure of the vehicle according to claim 1, characterized in that, The resin component has an upper resin layer and a lower resin layer. The metal component is disposed between the upper resin layer and the lower resin layer.

5. The upper structure of the vehicle according to claim 2, characterized in that, The metal component is a surface treatment layer of metal.

6. The upper structure of the vehicle according to claim 4, characterized in that, The metal component is a surface treatment layer of metal.

7. The upper structure of the vehicle according to any one of claims 1 to 6, characterized in that, The radio waves are those in the frequency band used in V2X communication.

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