Vehicle superstructure

Abstract

To improve a function for protecting a sensor mounted on an upper part of a vehicle from external force.SOLUTION: A vehicle upper structure includes a roof member 11 of a vehicle 10, a sensor 16, a sensor cover 17, and an external cover 21. The sensor 16 is mounted at an upper part of the vehicle 10 such that at least a part thereof is located above the roof member 11. The sensor 16 is configured to emit and receive an infrared ray 15 as electromagnetic waves to recognize an external environment of the vehicle 10. The sensor cover 17 covers at least a part of the sensor 16 that is located above the roof member 11. The external cover 21 covers the sensor cover 17 from the outer side with a gap G1 formed between the external cover and the sensor cover 17.SELECTED DRAWING: Figure 3

Description

Technical Field

[0005]

[0001] The present invention relates to an upper structure of a vehicle in which a sensor for recognizing the outside of the vehicle is mounted on the upper part of the vehicle.

Background Art

[0002] For example, an opening member is provided on the upper part of the vehicle described in Patent Document 1. Inside this opening member, a sensor for recognizing the outside world by transmitting and receiving electromagnetic waves is arranged.

Prior Art Documents

Patent Documents

[0003]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0004] However, in the above vehicle, the sensor is only covered by the opening member. Therefore, there is a possibility that the strength of the portion covering the sensor is not sufficiently high. Accordingly, when an external force is applied to the opening member, there is a possibility that the opening member will not sufficiently exhibit its performance of protecting the sensor from the external force.

Means for Solving the Problems

[0005] Each aspect of the upper structure of a vehicle for solving the above problems is described. [Aspect 1] A roof member of a vehicle, a sensor mounted on the upper part of the vehicle so that at least a part thereof is located above the roof member and recognizing the outside of the vehicle by transmitting and receiving electromagnetic waves, a sensor cover covering at least a portion of the sensor located above the roof member, and an external cover covering the sensor cover with a gap therebetween from the outside.

[0006] With the above configuration, the sensor is protected from external forces by two types of covers: a sensor cover and an outer cover. Therefore, the performance of protecting the sensor from external forces is improved compared to when the sensor is covered by only one of the sensor cover or the outer cover.

[0007] Furthermore, a gap is formed between the sensor cover and the outer cover. Even if an external force is applied to the outer cover and it deforms, if the deformation occurs in the gap, the external force is less likely to be transmitted to the sensor cover. Therefore, the performance of protecting the sensor from external forces is further improved.

[0008] [Aspect 2] The vehicle superstructure according to [Aspect 1], wherein at least the outer cover of the sensor cover and the outer cover is formed of a resin material. With the above configuration, it is possible to make the vehicle's superstructure lighter compared to when both the sensor cover and the outer cover are made of a material other than resin, such as a metal material.

[0009] [Aspect 3] The vehicle superstructure according to [Aspect 2], wherein the sensor cover is formed of a metal material. With the above configuration, it is possible to increase the strength of the sensor cover compared to when the sensor cover is made of resin material.

[0010] [Aspect 4] The vehicle superstructure according to any one of [Aspect 1] to [Aspect 3], wherein the sensor recognizes the outside world of the vehicle by transmitting and receiving infrared rays as electromagnetic waves, and a garnish that suppresses the transmission of visible light and allows infrared rays to pass through is further provided in front of the sensor in the direction of infrared radiation transmission.

[0011] According to the above configuration, when visible light is shone onto the garnish from the front in the direction of infrared transmission, the transmission of that visible light is suppressed from passing through the garnish. Therefore, sensors located behind the garnish in the above transmission direction are suppressed (shielded) from being visible through the garnish.

[0012] In this case, if the garnish is made of a metal material, infrared rays will be reflected by the garnish, making it difficult for them to pass through. In this regard, according to the above configuration, when infrared light is transmitted from the sensor, that infrared light passes through the garnish. The infrared light that has passed through the garnish strikes objects outside the vehicle, including other vehicles and pedestrians, is reflected, and then passes through the garnish again. The infrared light that has passed through the garnish is received by the sensor. The sensor acquires information about the outside world of the vehicle based on the transmitted and received infrared light.

[0013] [Aspect 5] The vehicle superstructure according to [Aspect 4], wherein the garnish is detachably attached to at least one of the sensor cover, the outer cover, and the roof member.

[0014] With the above configuration, even if the garnish is damaged by flying stones or the like, it is possible to remove the garnish from the sensor cover, exterior cover, and roof component to which it is attached. After repairing the removed garnish, it can be reattached. Furthermore, it is possible to install a different garnish in place of the removed one. Therefore, repairability is improved compared to a case where the garnish is fixed to at least one of the sensor cover, exterior cover, and roof component.

[0015] [Aspect 6] The front and rear ends of the outer cover in the direction of electromagnetic wave transmission are open, and the portion of the open front end around the sensor cover forms an intake port for taking in outside air, and the portion of the open rear end around the sensor cover forms an exhaust port for discharging air to the outside of the vehicle, and the gap is connected to the intake port and the exhaust port, as described in any one of [Aspect 1] to [Aspect 5].

[0016] In this scenario, the sensor generates heat as it operates, causing its temperature to rise. Consequently, the temperature of the space covered by the sensor cover may also rise. In this regard, according to the above configuration, the portion of the open area at the front end of the outer cover in the direction of electromagnetic wave transmission, around the sensor cover, functions as an intake for taking in outside air. Furthermore, the portion of the open area at the rear end of the outer cover in the same transmission direction, around the sensor cover, functions as an exhaust port for expelling air to the outside of the vehicle. Moreover, the gap is connected to both the intake and exhaust ports.

[0017] Therefore, when the vehicle is traveling forward, for example in the direction of electromagnetic wave transmission, cool air from outside the vehicle enters the gap through the intake. The air that enters flows through the gap and is then discharged outside the vehicle through the exhaust port. The heat in the space covered by the sensor cover is conducted through the sensor cover to the air flowing through the gap. This heat conduction suppresses the temperature rise in the space covered by the sensor cover and the temperature rise of the sensor.

[0018] Furthermore, as described above, the portion of the open area around the sensor cover in the front and rear of the external cover in the transmission direction constitutes the intake and exhaust ports, eliminating the need to provide separate intake and exhaust ports.

[0019] [Aspect 7] In a part of the sensor cover covered by the outer cover, a communication hole for communicating the space covered by the sensor cover and the gap is formed, and on at least one of the inner surface and the outer surface of the sensor cover, a breathable adhesive tape that allows the passage of air and water vapor and restricts the passage of water is attached to a portion that closes the opening of the communication hole. The vehicle upper structure according to [Aspect 6].

[0020] According to the above configuration, when the humidity in the space covered by the sensor cover increases, water vapor (moisture) passes through the communication hole and the breathable adhesive tape and is discharged into the gap. This water vapor (moisture) rides on the air flowing through the gap and is discharged outside the vehicle through the exhaust port.

[0021] Also, even if water enters the gap from the intake port, the breathable adhesive tape restricts the water from entering the space covered by the sensor cover through the communication hole.

[0022] [Aspect 8] Further provided with a heat conductive member having a higher thermal conductivity than the sensor cover, and the heat conductive member is arranged in a state straddling the space covered by the sensor cover and the gap. The vehicle upper structure according to [Aspect 6] or [Aspect 7].

[0023] According to the above configuration, the heat in the space covered by the sensor cover is transmitted to the portion of the heat conductive member arranged in the same space. This heat is conducted to the portion of the heat conductive member arranged in the gap. This heat rides on the air flowing through the gap and is discharged outside the vehicle through the exhaust port. Cooling of the space covered by the sensor cover and cooling of the sensor are promoted. A rise in the temperature of the sensor is further suppressed.

[0024] [Aspect 9] A heat sink is arranged at a location adjacent to the sensor. The vehicle upper structure according to any one of [Aspect 1] to [Aspect 8]. According to the above configuration, the heat of the sensor is transmitted to the heat sink and released from this heat sink. Therefore, a rise in the temperature of the sensor is further suppressed.

[0025] [Aspect 10] The vehicle upper structure according to [Aspect 9], further provided with a fan for increasing the amount of air passing through the heat sink. According to the above configuration, when the fan is operated, the amount of air passing through the heat sink increases. The amount of heat released from the heat sink into the air increases. Therefore, the temperature rise of the sensor is further suppressed.

[0026] [Aspect 11] The vehicle upper structure according to [Aspect 9] or [Aspect 10], further provided with a cooling passage through which a coolant flows, and a part of the cooling passage is provided inside the heat sink. According to the above configuration, part of the heat released from the heat sink is transferred to the coolant flowing through the part of the cooling passage disposed within the heat sink. Therefore, the temperature rise of the sensor is further suppressed.

Advantages of the Invention

[0027] According to the present invention, the performance of protecting the sensor mounted on the upper part of the vehicle from external forces can be enhanced.

Brief Description of the Drawings

[0028] [Figure 1] In the first embodiment, it is a schematic side view of a vehicle to which the vehicle upper structure is applied. [Figure 2] It is a schematic plan view of the vehicle of FIG. 1. [Figure 3] It is a partial side cross-sectional view of the vehicle upper structure in the first embodiment. [Figure 4] It is an enlarged view of part X in FIG. 3. [Figure 5] It is an enlarged view of part Y in FIG. 3. [Figure 6] It is a partial exploded side cross-sectional view showing the components of the vehicle upper structure in the first embodiment disassembled. [[ID=4,2]] [Figure 7] It is a partial side cross-sectional view of the vehicle upper structure in the second embodiment. [Figure 8]This is a partial side cross-sectional view of the vehicle superstructure in the third embodiment. [Figure 9] This is a partial side cross-sectional view of the vehicle superstructure in the fourth embodiment. [Modes for carrying out the invention]

[0029] (First Embodiment) The first embodiment of the vehicle superstructure will be described below with reference to Figures 1 to 6. In the following description, the forward direction of vehicle 10 will be referred to as "forward," and the reverse direction as "rear." Furthermore, the vertical direction refers to the vertical direction of vehicle 10, and the left-right direction refers to the vehicle width direction, which coincides with the left-right direction when vehicle 10 is moving forward.

[0030] The vehicle 10 shown in Figures 1 and 2 is not limited to a vehicle powered by an internal combustion engine, but may also be an electric vehicle powered by an electric motor, a hybrid vehicle powered by both an internal combustion engine and an electric motor, etc.

[0031] Vehicle 10 is equipped with a plate-shaped roof member 11 and a plurality of elongated pillars (support columns) 13 on its upper part. The roof member 11 constitutes at least a part of the roof located above the passenger compartment of vehicle 10. The roof member 11 is responsible for protecting the occupants from rain, wind, snow, sunlight, etc. The plurality of pillars 13 support the roof member 11 from below and are responsible for ensuring the strength of the vehicle body 14.

[0032] As shown in Figures 2 and 3, a sensor 16 is mounted on the front part of the roof member 11, specifically in the left-right direction and, in the first embodiment, in the central part, which transmits and receives electromagnetic waves to recognize the outside world in front of the vehicle 10.

[0033] <Sensor 16> The sensor 16 is mounted on the upper part of the vehicle 10 such that at least a portion of it is located above the roof member 11. In the first embodiment, a LiDAR (Light Detection and Ranging) device is used as the sensor 16. The LiDAR device uses infrared radiation as electromagnetic waves for recognizing the external environment.

[0034] The sensor 16 has a sensor function that transmits infrared rays 15 outside the vehicle, within a predetermined angular range in front of the vehicle 10, and receives infrared rays 15 that have been reflected after hitting an object outside the vehicle.

[0035] As mentioned above, since the sensor 16 transmits infrared rays 15 toward the front of the vehicle 10, the direction of transmission of infrared rays 15 by the sensor 16 is from the rear to the front of the vehicle 10. The front in the direction of transmission of infrared rays 15 roughly coincides with the front of the vehicle 10, and the rear in the same transmission direction roughly coincides with the rear of the vehicle 10. Therefore, in the following description, the front in the direction of transmission of infrared rays 15 will simply be referred to as "front," "front," etc., and the rear in the same transmission direction will simply be referred to as "rear," "back," etc.

[0036] The vehicle superstructure includes the roof member 11 and the sensor 16 as part of its components. The vehicle superstructure further includes a sensor cover 17, an exterior cover 21, and a garnish 25.

[0037] <Sensor cover 17> As shown in Figures 3 and 6, the sensor cover 17 has a shape that covers at least the portion of the sensor 16 that is located above the roof member 11. The entire sensor cover 17 is made of a metal material. The sensor cover 17 has a front portion 17a at its front end, which is in front of the sensor 16 in the direction of infrared 15 transmission. The front portion 17a is inclined with respect to the horizontal and vertical planes (neither of which is shown) such that it is located further forward towards the bottom. An opening 18 is formed between the front portion 17a and the portion of the roof member 11 adjacent to the front of the front portion 17a. The sensor cover 17 has a top portion 17b adjacent to the rear of the front portion 17a. The top portion 17b extends rearward from the rear upper end of the front portion 17a. Furthermore, the sensor cover 17 has a rear portion 17c adjacent to the rear of the top portion 17b. The rear portion 17c is inclined so that it is lower towards the rear.

[0038] <External cover 21> The outer cover 21 covers the sensor cover 17 from the outside, leaving a gap G1 between them. The size of the gap G1 may be constant regardless of the positions of the sensor cover 17 and the outer cover 21, or it may vary depending on the position. The outer cover 21 is detachably attached to at least one of the roof member 11 and the sensor cover 17 by fastening members, etc. (not shown).

[0039] The front and rear ends of the outer cover 21 are open. Of the open portion at the front end, the area around the front end of the top 17b of the sensor cover 17 forms an intake port 22 for taking in outside air. Also, of the open portion at the rear end, the area around the rear end of the sensor cover 17 forms an exhaust port 23 for expelling air to the outside of the vehicle. The gap G1 is located between the intake port 22 and the exhaust port 23 and is connected to the intake port 22 and the exhaust port 23.

[0040] <Garnish 25> As shown in Figures 3, 5, and 6, the garnish 25 comprises a base portion 26, a closing portion 27, and a plurality of mounting portions 28. Of the garnish 25, at least the base portion 26 and the closing portion 27 are made of a resin material that transmits infrared rays 15. The base portion 26 and the closing portion 27 are provided with a transmission suppression layer (not shown) that suppresses the transmission of visible light by reflecting or absorbing visible light. The visible light transmission suppression layer is made of, for example, a black suppression layer. The black suppression layer is formed, for example, by applying a paint made of black pigment.

[0041] The base material portion 26 and the closing portion 27 are inclined with respect to the horizontal and vertical planes, similar to the opening 18, so that the lower part is positioned further forward. The base material portion 26 is large enough to cover the opening 18 from the front. The closing portion 27 protrudes rearward from the base material portion 26. The closing portion 27 is formed to be slightly smaller than the opening 18. The multiple mounting portions 28 each protrude rearward from the upper end of the base material portion 26.

[0042] As shown in Figures 3 and 5, the base material 26 is positioned adjacent to the front of the opening 18, and the closing portion 27 is inserted into the opening 18 from the front. The closing portion 27 is positioned inside the opening 18 and covers a large portion of it. An annular sealing member 29 is positioned around the closing portion 27 to seal the space between the inner circumferential wall surface of the opening 18 and the outer circumferential surface of the closing portion 27 (see Figure 6).

[0043] Furthermore, each mounting portion 28 is superimposed on the front end of the top portion 17b of the sensor cover 17. Each mounting portion 28 is detachably attached to the front end of the top portion 17b by fastening members 31 such as screws.

[0044] As shown in Figures 3 and 4, the vehicle superstructure of the first embodiment further includes a communication hole 19, a breathable adhesive tape 32, and a heat conductive member 34. <Communication hole 19> The communication hole 19 is provided in a part of the sensor cover 17 that is covered by the outer cover 21, specifically in the rear portion 17c in the first embodiment. The communication hole 19 penetrates the rear portion 17c in the thickness direction (vertical direction). The communication hole 19 connects the space S1 covered by the sensor cover 17 with the gap G1.

[0045] <Breathable Adhesive Tape 32> The breathable adhesive tape 32 is a tape that allows the passage of air and water vapor, while restricting the passage of water. The breathable adhesive tape 32 is attached to at least one of the inner and outer surfaces of the sensor cover 17 at a location that closes the opening of the communication hole 19. In the first embodiment, the breathable adhesive tape 32 is attached to the outer surface of the rear portion 17c.

[0046] <Heat conductive member 34> The heat conduction member 34 is formed in a rod shape from a material having a higher thermal conductivity than the sensor cover 17. The heat conduction member 34 is positioned so as to penetrate the rear portion 17c in the vertical direction. The heat conduction member 34 is positioned so as to straddle the space S1 and the gap G1. The upper end of the heat conduction member 34 is positioned in the gap G1. A sealing member 35 is positioned between the heat conduction member 34 and the portion of the sensor cover 17 through which the heat conduction member 34 penetrates. The gap between the inner wall surface of the portion of the sensor cover 17 through which the heat conduction member 34 penetrates and the outer circumferential surface of the heat conduction member 34 that penetrates the sensor cover 17 is filled and sealed by the sealing member 35.

[0047] Next, the operation of the first embodiment configured as described above will be explained. <Regarding the protection of sensor 16> When an external force is applied to the vehicle's superstructure shown in Figure 3, for example from above, that force is first applied to the outer cover 21. If the external force is small, it is absorbed by the outer cover 21.

[0048] Depending on the magnitude of the external force, the outer cover 21 may bend or deform. However, if the outer cover 21 bends or deforms within the gap G1, the external force will not be transmitted to the sensor cover 17, or will be transmitted less effectively.

[0049] Furthermore, if the external force causes the outer cover 21 to bend or deform beyond the gap G1, the outer cover 21 will be supported by the sensor cover 17. At this time, the sensor cover 17 will support the outer cover 21 without deformation, or with minimal deformation.

[0050] In particular, the sensor cover 17 is made of a metal material, which provides higher strength than if it were made of a resin material. In this respect as well, the sensor cover 17 can support its outer cover 21 without deforming itself, or with less deformation.

[0051] In this way, external forces are less likely to be transmitted to the sensor 16, thus improving the sensor 16's ability to protect itself from external forces. <Regarding the improvement in appearance using Garnish 25> When visible light is shone onto the garnish 25 from the front of the vehicle 10, the transmission of visible light through the garnish 25 is suppressed by a transmission suppression layer consisting of a black suppression layer or the like.

[0052] <Regarding external environment recognition by sensor 16> Here, if the garnish 25 is made of a metal material, the infrared rays 15 will be reflected by the garnish 25, making it difficult for them to pass through.

[0053] In this regard, in the first embodiment, the garnish 25 is made of a resin material that is transparent to infrared rays 15. Therefore, as shown in Figure 3, when infrared rays 15 are transmitted forward from the sensor 16, the infrared rays 15 pass through the garnish 25. After passing through the garnish 25, the infrared rays 15 that are reflected after hitting an object outside the vehicle, such as a preceding vehicle or pedestrian, pass through the garnish 25 again and are received by the sensor 16. The sensor 16 acquires information about the outside world of the vehicle 10 from the transmitted and received infrared rays 15. For example, an object may be recognized, or the distance between the vehicle 10 and the object, relative speed, etc., may be detected.

[0054] <Regarding water shutoff> As shown in Figures 3 and 6, the vehicle's superstructure employs a design that includes an opening 18 in the front part 17a of the sensor cover 17. Therefore, rain, snow, etc., may enter the space S1 through this opening 18 and adhere to the sensor 16. If rain, snow, etc. adhere to the sensor 16, there is a concern that it may lead to a decrease in the detection performance of the sensor 16.

[0055] In this regard, the base material portion 26 of the garnish 25, which is larger than the opening 18, covers the opening 18 from the front. This base material portion 26 restricts (stops water) the phenomenon of rain, snow, etc. entering the opening 18.

[0056] Furthermore, the sealing portion 27 of the garnish 25 is inserted into the opening 18, blocking a large portion of the opening 18. This sealing portion 27 further restricts the entry of rain, snow, etc. into the opening 18, thereby improving the watertight performance.

[0057] Furthermore, in the first embodiment, the space between the inner circumferential wall surface of the opening 18 and the outer circumferential surface of the closing portion 27 is sealed by the sealing member 29. As a result, the water-stopping performance is further improved. Furthermore, even if water enters the gap G1 through the air intake 22, the breathable adhesive tape 32 prevents the water from entering the space S1 through the communication hole 19. This also improves the water-stopping performance. As described above, the water that enters the gap G1 flows backward along the slope of the rear 17c of the sensor cover 17, and is then discharged outside the vehicle through the exhaust port 23.

[0058] <Regarding the cooling of sensor 16> As the sensor 16 operates, it generates heat, causing its temperature to rise. Consequently, heat accumulates in the space S1, and the temperature of the space S1 rises. If the temperature of the sensor 16 exceeds its guaranteed operating temperature, the operation of the sensor 16 may become unstable.

[0059] In this regard, in the first embodiment, for example as shown in Figure 3, when the vehicle 10 is traveling forward in the direction of electromagnetic wave transmission, in this case, forward, cool air from outside the vehicle enters the gap G1 through the intake port 22. The air that enters flows backward through the gap G1 and is then discharged outside the vehicle through the exhaust port 23. The heat in the space S1 is conducted to the air flowing through the gap G1 via the sensor cover 17. This heat conduction cools the space S1 and the sensor 16. The temperature rise of the sensor 16 is suppressed, and the phenomenon of the sensor 16's temperature exceeding its guaranteed operating temperature is suppressed.

[0060] Furthermore, the heat from space S1 is transferred to the portion of the heat conduction member 34 that is positioned in space S1. This heat is then conducted to the portion of the heat conduction member 34 that is positioned in gap G1 (the upper end). This heat is then transferred to the air flowing through gap G1 and discharged outside the vehicle through the exhaust port 23 along with the air. This promotes the cooling of space S1 and the sensor 16.

[0061] Furthermore, if the humidity in space S1 increases, water vapor (moisture) passes through the communication holes 19 and the breathable adhesive tape 32 and is discharged into gap G1. This water vapor (moisture) is carried by the air flowing through gap G1 and is discharged outside the vehicle through the exhaust port 23.

[0062] <Regarding repairability> If a structure were adopted in which the garnish 25 is fixed to the sensor cover 17, it would be difficult to take countermeasures if the garnish 25 were damaged by flying stones or the like.

[0063] In this respect, in the first embodiment, even if the garnish 25 is damaged, countermeasures can be taken. To take countermeasures, the outer cover 21 is removed from the roof member 11 and the sensor cover 17 to which the outer cover 21 was attached. By loosening the fastening by the fastening member 31, the garnish 25 can be removed from the sensor cover 17. After repairing the removed garnish 25, it is possible to reattach the garnish 25 to the sensor cover 17 by fastening it again with the fastening member 31. Alternatively, a different garnish 25 can be attached to the sensor cover 17 in place of the removed garnish 25.

[0064] Next, the effects of the first embodiment will be described. (1-1) As shown in Figure 3, in the first embodiment, the sensor cover 17 that covers the sensor 16 is covered from the outside by an outer cover 21. Therefore, the transmission of external force to the sensor 16 can be suppressed. Compared to Patent Document 1, in which the sensor is covered only by an opening material, the performance of protecting the sensor 16 from external force can be improved.

[0065] (1-2) As shown in Figure 3, in the first embodiment, the sensor cover 17 is covered by the outer cover 21 with a gap G1 between it and the sensor cover 17. Therefore, the transmission of external force to the sensor cover 17 and, consequently, the sensor 16 can be further suppressed, and the effect of (1-1) above can be further enhanced.

[0066] (1-3) As shown in Figure 6, in the first embodiment, the sensor cover 17 is made of a metal material. Therefore, compared to the case where the sensor cover 17 is made of a resin material, the performance of the sensor cover 17 in protecting the sensor 16 from external forces can be improved.

[0067] (1-4) As shown in Figures 3 and 6, in the first embodiment, a resin garnish 25 that is transparent to infrared rays 15 is placed in front of the sensor 16. Therefore, the infrared rays 15 transmitted from the sensor 16 can be transmitted through the garnish 25. This allows the sensor 16 to perform its function of recognizing the outside world.

[0068] (1-5) In the first embodiment, the garnish 25 is one having a visible light transmission suppression layer (not shown). Therefore, when the vehicle 10 is viewed from the front, it is possible to suppress (shield) the sensor 16 from being visible through the garnish 25. The appearance of the vehicle's upper structure, especially around the sensor 16, can be improved compared to when the sensor 16 is visible through the garnish 25.

[0069] (1-6) As shown in Figures 3 and 5, in the first embodiment, the opening 18 provided in front of the sensor 16 is covered from the front by the base material portion 26 of the garnish 25. Therefore, it is possible to restrict (stop water) rain, snow, etc. from entering the space S1 through the opening 18.

[0070] (1-7) In addition, in the first embodiment, a large portion of the opening 18 is blocked by the closing portion 27 of the garnish 25. Therefore, the water-stopping performance described in (1-6) above can be further enhanced.

[0071] (1-8) Furthermore, in the first embodiment, an annular sealing member 29 is arranged around the closing portion 27, and this sealing member 29 seals the space between the inner circumferential wall surface of the opening 18 and the outer circumferential surface of the closing portion 27. As a result, the water-stopping effect described in (1-6) above can be further enhanced.

[0072] (1-9) As shown in Figures 5 and 6, in the first embodiment, the garnish 25 is detachably attached to the top 17b of the sensor cover 17 by using fastening members 31 such as screws. Therefore, compared to the case in which the garnish 25 is fixed to at least one of the sensor cover 17, the outer cover 21, and the roof member 11, repairability can be improved.

[0073] (1-10) As shown in Figure 3, in the first embodiment, the portion of the open area at the front end of the outer cover 21 around the front end of the top 17b of the sensor cover 17 is used as an air intake 22. The portion of the open area at the rear end of the outer cover 21 around the rear end of the sensor cover 17 is used as an air exhaust port 23. The gap G1 is connected to the intake port 22 and the exhaust port 23.

[0074] Therefore, when the vehicle 10 is moving forward, outside air can be drawn in from the intake port 22 into the gap G1, allowed to flow through the gap G1, and then discharged outside the vehicle from the exhaust port 23. By conducting the heat from the space S1 to the air flowing through the gap G1, the space S1 and the sensor 16 can be cooled. This suppresses the temperature rise of the sensor 16 and improves the stability of its operation.

[0075] (1-11) Related to (1-10) above, the portion of the front and rear open parts of the external cover 21 that surrounds the sensor cover 17 constitutes the intake port 22 and exhaust port 23, so it is not necessary to provide the intake port 22 and exhaust port 23 separately.

[0076] (1-12) As shown in Figure 4, in the first embodiment, a communication hole 19 is made in the rear part 17c of the sensor cover 17. A breathable adhesive tape 32 is attached to the outer surface of the rear part 17c, covering the opening of the communication hole 19. Therefore, even if water enters the gap G1 from the intake port 22, the water can pass through the communication hole 19, preventing it from entering the space S1, while the water vapor (moisture) in the space S1 can be discharged to the gap G1 through the communication hole 19. The water vapor can then be carried by the air flowing through the gap G1 and discharged outside the vehicle from the exhaust port 23.

[0077] (1-13) As shown in Figure 4, in the first embodiment, a heat conductive member 34 having a higher thermal conductivity than the sensor cover 17 is used and is positioned to straddle the space S1 and the gap G1. Therefore, heat from space S1 is conducted to the gap G1 via the heat conductive member 34 and can be discharged from the exhaust port 23 on the air flowing through the gap G1. Cooling of space S1 and sensor 16 can be promoted. As a result, the temperature rise of sensor 16 can be further suppressed and the effects of (1-10) above can be further enhanced.

[0078] (1-14) As shown in Figure 3, in the first embodiment, the outer cover 21 is made of a resin material. Therefore, the outer cover 21 can be made lighter than when the outer cover 21 is made of a metal material. Accordingly, the weight of the vehicle superstructure and, by extension, the vehicle 10 can be reduced.

[0079] (Second Embodiment) Next, a second embodiment of the vehicle superstructure will be described with reference to Figure 7. The second embodiment differs from the first embodiment in the structure for cooling the sensor 16. More specifically, a heat sink 36 is positioned adjacent to the sensor 16. In the second embodiment, the heat sink 36 is positioned below and adjacent to the sensor 16.

[0080] The heat sink 36 is responsible for receiving some of the heat from the sensor 16 and releasing it into the air or elsewhere. The heat sink 36 is made of a material with high thermal conductivity, such as a metal (aluminum, etc.) or ceramics. The heat sink 36 has a structure that increases the surface area, for example, a structure in which plate-like parts called fins, thin rod-like parts, etc. are arranged. At least a part of the heat sink 36 may be positioned below the roof member 11.

[0081] Furthermore, in the second embodiment, a fan 37 is provided around the heatsink 36. The fan 37 plays a role in increasing the amount of air passing through the heatsink 36 by guiding the air generated by rotating its blades with an electric motor to the heatsink 36.

[0082] In the second embodiment, the heat conductive member 34 is not used, but it may be used. The configuration other than that described above is the same as in the first embodiment. Therefore, in the second embodiment, the same reference numerals are used for elements similar to those described in the first embodiment, and redundant explanations are omitted.

[0083] Therefore, of the operations described in the first embodiment, all operations except those related to the heat conductive member 34 are also performed in the second embodiment. In addition, in the second embodiment, the following actions are taken to cool the sensor 16.

[0084] A portion of the heat from the sensor 16 is transferred to the heatsink 36, and then released into the air from the heatsink 36. As a result, the temperature rise of the sensor 16 is suppressed. Furthermore, when the fan 37 is activated, the amount of air passing through the heatsink 36 increases. This increases the amount of heat released from the heatsink 36 into the air.

[0085] Next, the effects of the second embodiment will be described. According to the second embodiment, effects other than those described in (1-13) above due to the use of the heat conductive member 34 can be obtained from the effects described in the first embodiment. In addition, the following effects can also be obtained according to the second embodiment.

[0086] (2-1) In the second embodiment, the heat sink 36 is placed adjacent to the sensor 16. This suppresses the temperature rise of the sensor 16 and improves the stability of the sensor 16's operation.

[0087] (2-2) In the second embodiment, the amount of air passing through the heat sink 36 is increased by the fan 37. As a result, the temperature rise of the sensor 16 can be further suppressed, and the effect of (2-1) above can be further enhanced.

[0088] (Third embodiment) Next, a third embodiment of the vehicle superstructure will be described with reference to Figure 8. In the third embodiment, a cooling passage 38 through which coolant flows is provided instead of the fan 37. The cooling passage 38 is annular (endless). The cooling passage 38 is formed by the internal space of a piping member (not shown) arranged in the vehicle 10. Part of the cooling passage 38 is located inside the heat sink 36. A pump P and a radiator 39 are located in the middle of the cooling passage 38. The pump P is responsible for circulating the coolant in the cooling passage 38. The radiator 39 is responsible for cooling the coolant by dissipating the heat of the coolant into the air. Note that part of the cooling passage 38, the radiator 39, the pump P, etc., may be located in a part of the vehicle 10 away from the roof member 11.

[0089] The configuration other than that described above is the same as in the second embodiment. Therefore, in the third embodiment, elements similar to those described in the second embodiment are denoted by the same reference numerals, and redundant explanations are omitted.

[0090] Therefore, of the actions described in the second embodiment, all actions except those related to the fan 37 are also performed in the third embodiment. In addition, in the third embodiment, the following actions are performed regarding the cooling of the sensor 16.

[0091] The coolant is circulated by the pump P through the cooling passage 38, as shown by the white arrow in Figure 8. The heat from the coolant is dissipated into the air as it passes through the radiator 39. Due to this dissipation, the temperature of the coolant becomes lower after passing through the radiator 39 than before. The cooled coolant then passes through the heat sink 36. The heat sink 36 receives some of the heat generated by the sensor 16 and releases it into the air and into the coolant passing through the portion of the cooling passage 38 located within the heat sink 36. This release cools the sensor 16, and the temperature of the coolant becomes higher after passing through the heat sink 36 than before. This heated coolant then flows back to the radiator 39 through the cooling passage 38.

[0092] Next, the effects of the third embodiment will be described. According to the third embodiment, among the effects described in the second embodiment, effects other than the effect (2-2) above due to the use of the fan 37 can be obtained. In addition, according to the third embodiment, the following effects can also be obtained.

[0093] (3-1) In the third embodiment, a cooling passage 38 through which a coolant flows is provided, and a portion of the cooling passage 38 is placed inside the heat sink 36. As a result, a portion of the heat released from the heat sink 36 can be transferred to the coolant, further suppressing the temperature rise of the sensor 16 and enhancing the effect of (2-1) above.

[0094] (Fourth Embodiment) Next, a fourth embodiment of the vehicle superstructure will be described with reference to Figure 9. In the fourth embodiment, a garnish 25 having a different shape from that of the first embodiment is used. The garnish 25 comprises a base material portion 26 and a mounting portion 28. The garnish 25 does not have the closing portion 27. The opening 18 is not closed by the garnish 25, but is covered from the front by the base material portion 26 which is larger than the opening 18.

[0095] Of the garnish 25, at least the base material portion 26 is formed of a resin material that transmits infrared rays 15. The base material portion 26 has a visible light transmission suppression layer (not shown) similar to that of the first embodiment.

[0096] The base material portion 26 is located in front of the front portion 17a and, similar to the front portion 17a, is inclined with respect to the horizontal and vertical planes so that the lower part is further forward. The mounting portion 28 protrudes rearward from the upper end of the base material portion 26.

[0097] The garnish 25 is attached to the front end of the outer cover 21 at the mounting portion 28. This attachment method may involve fixing with adhesive or the like. Alternatively, the attachment method may involve fastening with fastening members such as screws, as in the first embodiment. In the latter case, the garnish 25 is detachably attached to the front end of the outer cover 21 at the mounting portion 28.

[0098] In Figure 9, an auxiliary roof member 12 is positioned below and in front of the base material 26, and together with the roof member 11, it constitutes the roof of the vehicle 10, but it can be omitted. Furthermore, although the heat conductive member 34 is not used in the fourth embodiment, it may be used.

[0099] Furthermore, although not shown in Figure 9, an air intake is formed on at least one side of the garnish 25 in the left-right direction. This intake is connected to the gap G1, similar to the first embodiment.

[0100] The configuration other than that described above is the same as in the first embodiment. Therefore, in the fourth embodiment, the same reference numerals are used for elements similar to those described in the first embodiment, and redundant explanations are omitted.

[0101] Therefore, of the operations described in the first embodiment, all operations except those relating to the heat conduction member 34, the occlusion portion 27, and the sealing member 29 are also performed in the fourth embodiment. In the fourth embodiment, the garnish 25 is attached to the outer cover 21 and the base material portion 26 is located in front of the opening 18, so the order in which the infrared rays 15 are transmitted or passed through is slightly different from that of the first embodiment.

[0102] In other words, when infrared rays 15 are transmitted forward from the sensor 16, the infrared rays 15 pass through the opening 18 and then through the base material 26 of the garnish 25. The infrared rays 15 that have passed through the base material 26 are reflected off objects outside the vehicle, including preceding vehicles and pedestrians, and then pass through the base material 26 again. After that, the infrared rays 15 pass through the opening 18 and are received by the sensor 16. Based on the transmitted and received infrared rays 15, the sensor 16 acquires information about the outside world of the vehicle 10.

[0103] Next, the effects of the fourth embodiment will be described. According to the fourth embodiment, effects other than those described in (1-7), (1-8), and (1-13) above can be obtained from the effects described in the first embodiment. In particular, when the mounting portion 28 is detachably attached to the front end of the outer cover 21 by a fastening member, repairability can be improved, similar to (1-9) above.

[0104] Furthermore, the above embodiment can also be implemented as a modified example with the following changes. The above embodiment and the following modified examples can be combined with each other to the extent that they do not contradict each other technically.

[0105] <About Sensor 16> The sensor 16 may recognize the outside world by transmitting and receiving electromagnetic waves other than infrared rays. For example, the sensor 16 may be a millimeter-wave radar device that uses millimeter waves as electromagnetic waves. Alternatively, the sensor 16 may be various types of camera devices.

[0106] The sensor 16 may be a sensor that recognizes the outside world behind the vehicle 10 by transmitting electromagnetic waves to the rear of the vehicle and receiving the electromagnetic waves that have hit an object outside the vehicle and been reflected. The sensor 16 may be located at a different location from the front of the roof member 11 in the front-rear direction, for example, at the rear, in the center, etc.

[0107] The sensor 16 may be mounted on the upper part of the vehicle 10 such that a portion of it is located below the roof member 11. <Regarding sensor cover 17 and external cover 21> The sensor cover 17 may be made of a resin material instead of a metal material. In this case, the sensor cover 17 can be made lighter than when it is made of a metal material, which can lead to a reduction in the weight of the vehicle's superstructure and, consequently, the vehicle 10.

[0108] Conversely to the embodiments described above, the sensor cover 17 may be formed from a resin material and the outer cover 21 from a metal material. • A fastening member other than the screw may be used to removably attach the garnish 25 to the sensor cover 17 or the outer cover 21. Alternatively, a member other than the fastening member may be used for the removable attachment.

[0109] In each of the above embodiments, an opening 18 is formed between the front portion 17a of the sensor cover 17 and the portion of the roof member 11 adjacent to the front side of the front portion 17a. Alternatively, the entire opening 18 may be formed in the front portion 17a.

[0110] The sensor cover 17 only needs to cover the portion of the sensor 16 that is located above the roof member 11. Therefore, the sensor cover 17 may cover the portion of the sensor 16 that is located below the roof member 11, in addition to the portion located above the roof member 11.

[0111] The inclination of the front portion 17a of the sensor cover 17 may be changed to a different inclination from that of the first to fourth embodiments. For example, the inclination of the front portion 17a may be changed to an inclination that is inclined with respect to the horizontal plane and the vertical plane at an angle different from that of the first to fourth embodiments.

[0112] Furthermore, the inclination of the front portion 17a may be changed to an inclination that is not inclined, but parallel to the vertical plane (orthogonal to the horizontal plane). In the first to third embodiments, the inclination of the base material portion 26 and the closing portion 27 of the garnish 25 is changed in accordance with the above modifications. In the fourth embodiment, the inclination of the base material portion 26 of the garnish 25 is changed in accordance with the above modifications.

[0113] <Regarding the communication holes 19 and the breathable adhesive tape 32> The communication hole 19 may be provided in a location different from the rear 17c of the sensor cover 17, provided that it is a location covered by the outer cover 21.

[0114] The breathable adhesive tape 32 may be applied to the inner surface of the sensor cover 17, either in place of or in addition to the outer surface, to cover the opening of the communication hole 19. Multiple communication holes 19 may be provided in the sensor cover 17, and breathable adhesive tape 32 may be attached to the openings of each communication hole 19.

[0115] The communication holes 19 may be omitted. In this case, the breathable adhesive tape 32 may also be omitted. <About Garnish 25> The garnish 25 may be detachably attached to at least one of the sensor cover 17, the outer cover 21, and the roof member 11.

[0116] Therefore, the garnish 25 may be detachably attached to the roof member 11 in place of the sensor cover 17 and the outer cover 21. Alternatively, the garnish 25 may be detachably attached to two or three of the sensor cover 17, the outer cover 21, and the roof member 11.

[0117] Conversely, the garnish 25 may be fixed to at least one of the sensor cover 17, the outer cover 21, and the roof member 11. Furthermore, garnish 25 can be omitted as appropriate.

[0118] The transmission-suppressing layer in garnish 25 can be omitted as appropriate. <Regarding the heat conductive member 34> • The heat conductive member 34 may have a different shape from that of the first embodiment, i.e., a non-rod shape.

[0119] The heat conduction member 34 may be positioned so as to penetrate a location different from the rear portion 17c, provided that it is the sensor cover 17. Multiple heat conductive members 34 may be used.

[0120] The heat conductive member 34 may be omitted. <Regarding the heat conductive member 34 and the heat sink 36> In the first embodiment, as in the second and third embodiments, the heat sink 36 may be positioned adjacent to the sensor 16. In this case, the portion of the heat conductive member 34 positioned in space S1, for example, the lower end, may be attached to the heat sink 36. According to this modification, the heat released from the heat sink 36 can be conducted to the air flowing through the gap G1 via the heat conductive member 34. This makes it possible to efficiently cool the sensor 16.

[0121] <Other> The configurations of the second and third embodiments may be combined. That is, a fan 37 may be provided around the heatsink 36, and a portion of the cooling passage 38 may be located inside the heatsink 36. [Explanation of Symbols]

[0122] 10... Vehicles 11…Roof components 12… Auxiliary roof components 13... Pillar 14... Vehicle body 15…Infrared rays (electromagnetic waves) 16...Sensor 17...Sensor cover 17a…front part 17b...Top 17c…rear 18…Opening 19...Communication hole 21…External cover 22...Intake 23... Exhaust vent 25... Garnish 26…Base material part 27…Occluded part 28…Mounting part 29, 35… Sealing material 31… Fastening member 32… Breathable adhesive tape 34…Heat conductive material 36… Heatsink 37…fan 38…Cooling passage 39...Radiator G1... Gap P...Pump S1…Space

Claims

1. The roof components of the vehicle, A sensor is mounted on the upper part of the vehicle such that at least a portion of it is located above the roof member, and which transmits and receives electromagnetic waves to recognize the outside world of the vehicle. A sensor cover that covers at least the portion of the sensor located above the roof member, The system comprises an external cover that covers the sensor cover from the outside, leaving a gap between the sensor cover and the external cover, The front and rear ends of the outer cover in the direction of transmission of the electromagnetic waves are open, respectively. Of the open portion at the front end, the portion around the sensor cover forms an intake for taking in outside air. Of the open portion at the rear end, the portion around the sensor cover forms an exhaust port for discharging air outside the vehicle. The aforementioned gap is connected to the intake port and the exhaust port, A vehicle superstructure wherein a portion of the sensor cover covered by the outer cover has a communication hole that connects the space covered by the sensor cover with the gap, and a breathable adhesive tape that allows the passage of air and water vapor but restricts the passage of water is attached to at least one of the inner and outer surfaces of the sensor cover where the opening of the communication hole is closed.

2. The roof components of the vehicle, A sensor is mounted on the upper part of the vehicle such that at least a portion of it is located above the roof member, and which transmits and receives electromagnetic waves to recognize the outside world of the vehicle. A sensor cover that covers at least the portion of the sensor located above the roof member, The system comprises an external cover that covers the sensor cover from the outside, leaving a gap between the sensor cover and the external cover, The front and rear ends of the outer cover in the direction of transmission of the electromagnetic waves are open, respectively. Of the open portion at the front end, the portion around the sensor cover forms an intake for taking in outside air. Of the open portion at the rear end, the portion around the sensor cover forms an exhaust port for discharging air outside the vehicle. The aforementioned gap is connected to the intake port and the exhaust port, The system further comprises a heat conductive member having a higher thermal conductivity than the aforementioned sensor cover, The heat conductive member is positioned in a vehicle superstructure that straddles the space covered by the sensor cover and the gap.

3. The vehicle superstructure according to claim 1 or 2, wherein at least the outer cover of the sensor cover and the outer cover is formed of a resin material.

4. The vehicle superstructure according to claim 3, wherein the sensor cover is formed of a metal material.

5. The aforementioned sensor recognizes the outside world of the vehicle by transmitting and receiving infrared radiation as electromagnetic waves. The vehicle superstructure according to claim 1 or claim 2, wherein a garnish that suppresses the transmission of visible light and transmits infrared light is further provided at a location in front of the sensor in the direction of infrared light transmission.

6. The vehicle superstructure according to claim 5, wherein the garnish is detachably attached to at least one of the sensor cover, the outer cover, and the roof member.

7. The vehicle superstructure according to claim 1 or claim 2, wherein a heat sink is arranged at a location adjacent to the sensor.

8. The vehicle superstructure according to claim 7, further comprising a fan that increases the amount of air passing through the heat sink.

9. The vehicle superstructure according to claim 7, further comprising a cooling passage through which coolant flows, wherein a portion of the cooling passage is located inside the heat sink.

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