Antenna equipment and radar equipment

Abstract

To provide a compact, light-weight, and high-rigidity antenna device having a cooling performance.SOLUTION: An antenna device has a first base plate, an apparatus, an antenna part, and a heat sink. The apparatus is provided on the first base plate and can generate heat by being energized. A second base plate is arranged so as to be opposed to the first base plate. The antenna part is provided on the second base plate and can generate heat by being energized. The heat sink is sandwiched between the first base plate and the second base plate as a structure material. The heat sink is thermally connected with the first base plate and the second base plate to radiate heat from the apparatus and the antenna part to the atmosphere.SELECTED DRAWING: Figure 5

Description

Technical Field

[0006] , , , , , , The heat sink has multiple surfaces that are thermally connected to the first base plate and the second base plate. The antenna device includes a cover fixed to the first base plate and covering the device, a first sealing portion provided between the cover and the first base plate, a radome fixed to the second base plate and covering the antenna portion, and a second sealing portion provided between the radome and the second base plate.

[0001] Embodiments of the present invention relate to an antenna device and a radar device.

Background Art

[0002] For example, various devices can generate heat during use due to energization. And, various cooling structures using heat sinks are known for various devices.

Prior Art Documents

Patent Documents

[0003]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0004] The problem to be solved by the present invention is to provide an antenna device and a radar device having cooling performance, being small, lightweight, and highly rigid.

Means for Solving the Problems

[0005] <00第30章>According to an embodiment, an antenna device includes a first base plate, a device, an antenna unit, and a heat sink. The device is provided on the first base plate and can generate heat due to energization. A second base plate is disposed opposite to the first base plate. The antenna unit is provided on the second base plate and can generate heat due to energization. The heat sink is sandwiched as a structural material between the first base plate and the second base plate. The heat sink is thermally connected to the first base plate and the second base plate, and dissipates heat from the device and the antenna unit to the atmosphere. The heat sink has multiple surfaces that are thermally connected to the first base plate and the second base plate. The antenna device includes a cover fixed to the first base plate and covering the device, a first sealing portion provided between the cover and the first base plate, a radome fixed to the second base plate and covering the antenna portion, and a second sealing portion provided between the radome and the second base plate.

Brief Description of the Drawings

[0006] [Figure 1]A perspective view of the rear side of the antenna device according to the embodiment. [Figure 2] Figure 1 shows a perspective view of the front side of the antenna device, seen from the opposite direction. [Figure 3] A side view of the antenna device as seen from the direction indicated by arrow III in Figure 1. [Figure 4] A side view of the antenna device as seen from the direction indicated by arrow IV in Figure 2. [Figure 5] A bottom view of the antenna device as seen from the direction indicated by arrow V in Figure 1. [Figure 6] A perspective view of the antenna device with the cover lid removed, as shown in Figure 1. [Figure 7] Figure 6 is a rear view of the antenna device, as seen from the back side of the antenna device. [Figure 8] A perspective view of the antenna device shown in Figure 2 with the radome removed. [Figure 9] Figure 8 is a front view of the antenna device, as seen from the front side of the antenna device. [Figure 10] A perspective view of the antenna device from the rear, with the cover removed, viewed from a different direction than in Figure 1. [Figure 11] A perspective view of the antenna device from the rear, with the cover and cylindrical member removed, as seen from a different direction than in Figure 1. [Figure 12] A schematic diagram showing the operating state of a radar system including an antenna device according to an embodiment. [Modes for carrying out the invention]

[0007] An antenna device 10 according to one embodiment will be described using Figures 1 to 12.

[0008] Figures 1 to 5 show the overall structure of the antenna device 10. Figure 1 is a rear perspective view of the antenna device 10. Figure 2 is a front perspective view of the antenna device 10, viewed from the opposite direction to Figure 1. Figure 3 is a side view of the antenna device 10, viewed from the direction indicated by arrow III in Figure 1. Figure 4 is a side view of the antenna device 10, viewed from the direction indicated by arrow IV in Figure 2. Figure 5 is a bottom view of the antenna device 10, viewed from the direction indicated by arrow V in Figure 1. Figure 6 is a perspective view of the antenna device 10 with the lid portion 26b of the cover (first cover) 26 removed, for example, for maintenance. Figure 7 is a rear view of the antenna device 10 shown in Figure 6, viewed from the rear side of the antenna device 10. Figure 8 is a perspective view of the antenna device 10 with the radome (second cover) 40 removed, for example, for maintenance. Figure 9 is a front view of the antenna device 10 shown in Figure 8, viewed from the front side of the antenna device 10. Figure 10 is a rear perspective view of the antenna device 10 with the cover 26 removed, viewed from a different direction than in Figure 1. Figure 11 is a rear perspective view of the antenna device 10 with the cover 26 and cylindrical member 54 removed, viewed from a different direction than in Figure 1. Figure 12 is a schematic diagram showing a view from above of the radar device 1, which includes an antenna device 10 according to an embodiment of this model.

[0009] As shown in Figures 1 to 5, the antenna device 10 includes a first housing 12, a second housing 14, a heat sink 16 sandwiched between the first housing 12 and the second housing 14, and a fan device 18 for air-cooling the heat sink 16. The first housing 12 and the second housing 14 are connected by, for example, three connecting members 13 with the heat sink 16 in between.

[0010] The heat sink 16 shown in Figures 1, 3, and 5 is formed in a cylindrical box shape from a material with good thermal conductivity, such as aluminum or an aluminum alloy. In this embodiment, the heat sink 16 is formed in a rectangular parallelepiped shape. The heat sink 16 has multiple surfaces that are thermally connected to the first base plate 22 of the first housing 12 (described later) and the second base plate 32 of the second housing 14 (described later). In this embodiment, an example is described in which two surfaces of the heat sink 16 are thermally connected, but for example, the remaining two surfaces may also be thermally connected to equipment that can generate heat.

[0011] The heatsink 16 is used as a structural member to fix the first housing 12 and also as a structural member to fix the second housing 14. The first housing 12 and the heatsink 16, and the second housing 14 and the heatsink 16 are appropriately fixed using bolts and nuts (not shown) or adhesive. The first housing 12 and the heatsink 16, and the second housing 14 and the heatsink 16 are fixed via a thermally conductive material such as thermal conductive grease (not shown), brazing material, or a thermally conductive adhesive. Therefore, even if the connecting member 13 loosens when the antenna device 10 is positioned in an appropriate orientation, the fixed state between the first housing 12 and the heatsink 16, and the fixed state between the second housing 14 and the heatsink 16 are not immediately released. In other words, if the fixed state between the first housing 12 and the heatsink 16, and the fixed state between the second housing 14 and the heatsink 16 are maintained, the three connecting members 13 are not necessarily required. The connecting member 13 can be used when fixing the antenna device 10 according to this embodiment to a structure, etc.

[0012] The heat sink 16 has, for example, a lower first vent 16a (see Figure 5) and, for example, an upper second vent (not shown). The first vent 16a and the second vent are each formed as, for example, substantially rectangular openings. The first vent 16a and the second vent of the heat sink 16 are each formed as heat dissipation fins 16b (only the side of the first vent 16a is shown) in a grid pattern, for example, to dissipate heat to the atmosphere while ensuring ventilation.

[0013] Near the upper side of the second vent of the heat sink 16, a fan device 18 is provided. In the present embodiment, the fan device 18 is installed, for example, so as to flow air in the horizontal direction. In the present embodiment, the fan device 18 is installed above the heat sink 16 and above the first housing 12.

[0014] As shown in FIGS. 1-4, FIG. 6, and FIG. 7, in the present embodiment, the fan device 18 has a box 18a and a fan 18b provided in the box 18a.

[0015] The box 18a communicates with the second vent of the heat sink 16 and forms an air flow path that bends the flow of air passing through the second vent of the heat sink 16, for example, in a substantially L-shape. The box 18a has an exhaust passage 18a1 such as a louver. The fan 18b is covered by the box 18a. The box 18a prevents the fan 18b from being exposed outdoors. Also, the box 18a suppresses the entry of dust, rainwater, etc. of an appropriate size into the inside of the fan 18b and the heat sink 16. Components may be provided inside the box 18a and the exhaust passage 18a1 to prevent a maintenance person from putting a finger or the like into the box 18a when the fan 18b is rotating.

[0016] Note that the fan 18b is provided so as to flow air toward the exhaust passage 18a1 by rotation.

[0017] As described above, the second vent of the heat sink 16 communicates with the box 18a in which the fan 18b is provided. Therefore, when the fan 18b rotates, an air flow is created that introduces air into the heat sink 16 from the first vent 16a and discharges air from the heat sink 16 through the second vent. For this reason, the heat transmitted to the heat sink 16 is exhausted through the second vent by the fan 18b.

[0018] As shown in Figures 1, 3-7, the first housing 12 includes a first base plate 22, a controller (device) 24, a cover 26, and connectors 28a and 28b.

[0019] As shown in Figures 2-5, 8, and 9, the second housing 14 includes a second base plate 32, a power supply (device) 34, an antenna section 36 such as an antenna module for a phased array antenna, a motherboard (device) 38, and a radome 40.

[0020] The heat sink 16 and the first base plate 22 are fixed together via a thermally conductive material, such as thermal conductive grease, brazing material, or a thermally conductive adhesive (not shown). The first base plate 22 covers the entire surface of one of the pair of rectangular surfaces of the heat sink 16 that have the largest surface area. In this case, the first base plate 22 and the rectangular surface of the heat sink 16 are in contact via a sheet with good thermal conductivity (heat transfer sheet) or the like, as needed.

[0021] As shown in Figures 6 and 7, the first base plate 22 is provided with a controller 24 that generates heat when energized. The controller 24 shown in Figures 7-11 controls the power supply 34, the antenna unit 36, and the motherboard 38. The controller 24 is electrically connected to the power supply 34, the antenna unit 36, and the motherboard 38 by, for example, a cable 52. The cable 52 is, for example, a flexible flat cable.

[0022] As shown in Figures 6 and 7, the first base plate 22 is provided with an opening (through hole) 22a for passing cables 52 and the like. The first base plate 22 is also provided with a cover 26 that covers the outside of the controller 24 and the opening 22a and protects the controller 24.

[0023] The cover 26 has, for example, a cylindrical cover body 26a and, for example, a flat plate-shaped lid portion 26b. The cover body 26a and the lid portion 26b are made of, for example, an aluminum alloy material.

[0024] One end of the cover body 26a is fixed to the first base plate 22. A first sealing portion 27, such as an O-ring, is provided between the one end of the cover body 26a and the first base plate 22. As a result, the space between the one end of the cover body 26a and the first base plate 22 is watertight.

[0025] The cover portion 26b is provided at the other end opposite to the position (one end) where the cover body 26a is fixed to the first base plate 22. The cover portion 26b is detachable from the other end of the cover body 26a. For example, when the cover portion 26b is removed from the cover body 26a, maintenance of the controller 24 can be easily performed. When the cover portion 26b is fixed to the other end of the cover body 26a, a sealing member (not shown), such as an O-ring, is provided to seal the space between the other end of the cover body 26a and the cover portion 26b. Therefore, the cover 26 is fixed to the first base plate 22, protecting the internal equipment (controller 24, etc.) from external water droplets, dust, and other debris.

[0026] The controller 24 is provided with a pair of connectors 28a and 28b that electrically connect the controller 24 to the outside of the antenna device 10. In this embodiment, the pair of connectors 28a and 28b are fixed to the cover body 26a.

[0027] The second base plate 32 is positioned opposite the first base plate 22, with the heat sink 16 in between. The second base plate 32 is formed to be approximately the same size as the first base plate 22. For example, four corners of the first base plate 22 face each other, and for example, four corners of the second base plate 32 face each other.

[0028] The heat sink 16 and the second base plate 32 are fixed together via a thermally conductive material, such as thermal conductive grease (not shown), brazing material, or a thermally conductive adhesive. The second base plate 32 covers the entire surface of the other side of the pair of rectangular surfaces of the heat sink 16 that have the largest surface area. In this case, the second base plate 32 and the rectangular surface of the heat sink 16 are in contact via a sheet (heat transfer sheet) that has good thermal conductivity and electrical insulation properties, if necessary. It is preferable that the second base plate 32 be positioned parallel to the first base plate 22. In this state, the heat sink 16 is sandwiched between the first base plate 22 and the second base plate 32.

[0029] As shown in Figures 8 and 9, the second base plate 32 is provided with a power supply 34, an antenna section 36 of, for example, a phased array antenna, and a motherboard 38. The power supply 34, the antenna section 36, and the motherboard 38 generate heat when power is supplied. The second base plate 32 is provided with an opening (through hole) 32a for passing the cable 52 through. The opening 32a of the second base plate 32 is formed in a position opposite to the opening 22a of the first base plate 22, and is formed to be, for example, the same size and shape.

[0030] As shown in Figures 1-6, a radome 40 is fixed to the second base plate 32, covering the power supply 34, antenna unit 36, motherboard 38, and opening 32a, and protecting the power supply 34, antenna unit 36, and motherboard 38. A second sealing part 41, such as an O-ring, is provided between the radome 40 and the second base plate 32, as shown in Figures 8 and 9. As a result, the space between the second base plate 32 and the radome 40 is watertight. Therefore, the radome 40 is fixed to the second base plate 32 and can protect the internal equipment (power supply 34, antenna unit 36, motherboard 38, etc.) from external water droplets and dust. When the power supply 34 and antenna unit 36 ​​are to be maintained, the radome 40 is removed from the second base plate 32, as shown in Figures 8 and 9.

[0031] Of the radome 40 shown in Figures 1-6, the cylindrical portion 40a fixed to the second base plate 32 is made of, for example, an aluminum alloy. The plate member 40b of the radome 40 that transmits radio waves is made of, for example, a material with high radio wave transmittance such as GFRP. The plate member 40b is fixed to the cylindrical portion 40a in a watertight manner, for example, by adhesive.

[0032] As shown in Figures 5, 8, 10, and 11, the opening 22a of the first base plate 22 and the opening 32a of the second base plate 32 face each other. The openings 22a of the first base plate 22 and the opening 32a of the second base plate 32 are formed in positions that do not face the heat sink 16. A cable 52 connecting the controller 24 and the antenna unit 36, and / or the controller 24 and the power supply 34, passes through the openings 22a and 32a. The cable 52 passes through a cylindrical member 54 that passes through the openings 22a and 32a of the first base plate 22 and the second base plate 32.

[0033] In this embodiment, the cylindrical member 54 is a flattened cylinder, but it can be formed in any suitable shape, such as a cylindrical shape. The cylindrical member 54 is provided adjacent to the heat sink 16 and is exposed together with the heat sink 16, for example, to the outside of the antenna device 10.

[0034] As shown in Figure 10, a flange portion 54a is integrally molded, for example, at one end of the cylindrical member 54. The flange portion 54a is fixed, for example, to the first base plate 22. As shown in Figure 11, a third sealing portion 55a, such as an O-ring, is provided between the flange portion 54a and the first base plate 22. Therefore, when the flange portion 54a is fixed to the first base plate 22, the flange portion 54a presses the third sealing portion 55a near the opening 22a of the first base plate 22. Thus, the space between the opening 22a of the first base plate 22 and the cylindrical member 54 is made liquid-tight by the third sealing portion 55a.

[0035] As shown in Figure 8, the other end of the cylindrical member 54 does not have, for example, a flange. The other end of the cylindrical member 54 passes through the opening 32a of the second base plate 32. The space between the other end of the cylindrical member 54 and the second opening 32a of the second base plate 32 is sealed by a fourth sealing portion 55b, such as an O-ring. Therefore, the space between the opening 32a of the second base plate 32 and the cylindrical member 54 is made liquid-tight by the fourth sealing portion 55b.

[0036] Furthermore, it is preferable that a ring-shaped member be provided at the other end of the cylindrical member 54, which passes through the other end of the cylindrical member 54 and is fixed, for example, around the opening 32a of the second base plate 32. In this case, the ring-shaped member presses the fourth sealing portion 55b against the second base plate 32, forming a liquid-tight seal between the opening 32a of the second base plate 32 and the cylindrical member 54.

[0037] As shown in Figure 12, the antenna device 10 can be used as part of various radar devices 1. The radar device 1 includes a support column 100 and, for example, three antenna devices 10 fixed to the support column 100. The antenna devices 10 are fixed to the support column 100, such as a utility pole, by fittings 100a, such as adjustable bands. In this case, the antenna devices 10 are fixed to the support column 100 using fittings 100a, such as connecting members 13. In the example shown in Figure 12, the three antenna devices 10 are arranged at equal intervals around the central axis of the cylindrical support column 100. The three antenna devices 10 are installed outdoors, for example, several meters above the ground.

[0038] Next, the operation of the antenna device 10 will be explained.

[0039] Power supplied from the power supply 34, and controlled by the controller 24, the antenna unit 36 ​​transmits and receives radio waves at an angle of, for example, 120°. At this time, the power supplied from the power supply 34 generates heat in various components such as the power supply 34, antenna unit 36, motherboard 38, and controller 24. The heat from the controller 24 of the first housing 12 is transferred from the first base plate 22 to the heatsink 16. Similarly, the heat from the power supply 34, antenna unit 36, and motherboard 38 of the second housing 14 is transferred from the second base plate 32 to the heatsink 16. The heat transferred to the heatsink 16 is then transferred to the fins 16b of the first vent 16a and the fins (not shown) of the second vent. The heatsink 16 dissipates heat into the atmosphere through the fins 16b of the first vent 16a and the fins of the second vent. Therefore, the antenna device 10 can use the heat sink 16 to cool various components that may generate heat when power is applied.

[0040] Here, the fan 18b continues to rotate due to the power supply from the power supply 34. As a result, the fan 18b introduces air into the heatsink 16 from the first vent 16a and creates an airflow that expels air from the heatsink 16 through the second vent. Therefore, the heat transferred to the heatsink 16 is continuously discharged to the outside of the antenna device 10 through the second vent, the fan 18b, and the exhaust passage 18a1. Consequently, heat is efficiently transferred by the heatsink 16, which is sandwiched between the first base plate 22 on which the controller 24 is located and the second base plate 32 on which the power supply 34 and antenna unit 36 ​​are located, and the various components are continuously cooled. At this time, the rotation of the fan 18b creates an airflow from the first vent 16a to the second vent of the heatsink 16. As a result, the heat transferred to the fins 16b of the first vent 16a and the fins of the second vent of the heatsink 16 is efficiently dissipated into the atmosphere.

[0041] In this embodiment, the antenna device 10 can cool multiple opposing rectangular surfaces of the heat sink 16 (the surface that fixes the first housing 12 and the surface that fixes the second housing 14) with a fan device 18 installed in one location. In this way, the antenna device 10 in this embodiment can use a common fan device 18 to cool both the first housing 12 and the second housing 14. Therefore, it becomes easier to use, for example, a fan 18b with a larger diameter than if a cooling fan device were placed in both the first housing 12 and the second housing 14. Consequently, the number of fan devices 18 can be reduced, and efficiency can be improved, such as by improving the maintainability of the fan devices 18. In addition, the overall weight of the antenna device 10 can be reduced compared to the case where a fan device 18 is placed in both the first housing 12 and the second housing 14.

[0042] In this embodiment, the exhaust passage 18a1 of the box 18a of the fan device 18 is shown to exhaust air to the rear side of the antenna device 10 by the fan 18b. For example, the fan device 18 may exhaust air to the front side (radio wave transmission and reception side) of the antenna device 10. Alternatively, the fan device 18 may exhaust air to the side of the antenna device 10.

[0043] As described above, the antenna device 10 is installed outdoors, for example, several meters above the ground. Therefore, the antenna device 10 is exposed to wind and rain. The heat sink 16 of the antenna device 10 according to this embodiment can be used as a structure for mounting cooling targets on both sides of the heat sink 16. Therefore, for example, other structures supporting the first housing 12 and the second housing 14 can be omitted, thereby reducing the weight and conserving resources of the antenna device 10. Furthermore, aluminum or an aluminum alloy can be used as the heat sink 16, as it is a metal material with good thermal conductivity. Therefore, the heat sink 16 can contribute to reducing the weight of the antenna device 10 while ensuring thermal conductivity. In addition, the antenna device 10 according to this embodiment can use relatively lightweight materials such as aluminum or an aluminum alloy for at least a portion of the cover 26 and the radome 40. For example, the cover 26 can be entirely made of relatively lightweight aluminum or an aluminum alloy. Also, the cylindrical portion 40a of the radome 40 can be made of relatively lightweight aluminum or an aluminum alloy. Therefore, the selection of materials for the cover 26 and the radome 40 can contribute to reducing the weight of the antenna device 10.

[0044] For example, if the various components of the antenna device according to this embodiment, such as the controller 24, power supply 34, antenna unit 36, and motherboard 38, are laid out on one side of a single flat plate, the surface area of ​​the antenna device when viewed from the opening (front) of the antenna unit 36 ​​will be large. Therefore, when the various components are laid out on one side of a single flat plate, the structural materials will become large and heavy in order to ensure the rigidity and wind resistance of the antenna device. Furthermore, a large and heavy antenna device may be disadvantageous in terms of transportability. Moreover, if a large and heavy antenna device is to be installed in multiple directions, the required installation area will increase. In contrast, the antenna device 10 according to this embodiment uses a heat sink 16 as a structural material, and when viewed from the opening surface (front) side of the antenna section 36, the second housing 14 is fixed to the heat sink 16, and the first housing 12 is fixed to the opposite (rear) side of the heat sink 16, so that the heat sink 16 is sandwiched between the first housing 12 and the second housing 14. For this reason, the heat sink 16 can be used as a structural material to ensure the rigidity and wind resistance of the antenna device 10. If the various devices described above are laid out on one side of a single flat plate, a separate structural material to support the heat sink 16, etc., may be required. Therefore, the antenna device 10 according to this embodiment has a structure in which the heat sink 16 as a structural material is sandwiched between the first housing 12 and the second housing 14, so that the entire antenna device 10 can be made smaller and lighter compared to when the various devices described above are laid out on one side of a single flat plate. Furthermore, the antenna device 10 has a smaller surface area exposed to wind and rain compared to the case where the various devices described above are laid out on one side of a single flat plate. Therefore, according to this embodiment, it is possible to provide an antenna device 10 that has cooling performance, is small, lightweight, and highly rigid. In addition, compared to the case where the controller 24, power supply 34, antenna unit 36, motherboard 38, etc. of the antenna device 10 are laid out on a single plane, the antenna device 10 according to this embodiment may also be advantageous in terms of transportation. Moreover, since the antenna device 10 can be made smaller and lighter, the required site can be reduced when installing the antenna device 10 in multiple directions.

[0045] Furthermore, in the antenna device 10 according to this embodiment, it is possible to have a certain degree of freedom in the arrangement of various components, such as the heat-generating components, including the controller 24, power supply 34, antenna unit 36, and motherboard 38. In this embodiment, an example was described in which the first housing 12 has the controller 24 and the second housing 14 has the power supply 34, antenna unit 36, and motherboard 38. For example, the power supply 34 may be placed in the first housing 12, and the controller 24 may be placed in the second housing 14 adjacent to the antenna unit 36. In other words, the arrangement of various components such as the controller 24, power supply 34, antenna unit 36, and motherboard 38 can be appropriately set considering the influence of noise that may be applied to the antenna unit 36, the weight balance of the antenna device 10, etc.

[0046] In this embodiment, the antenna device 10 has a first sealing portion 27 that seals the space between the first base plate 22 of the first housing 12 and the cover body 26a of the cover 26. The space between the cylindrical member 54 and the opening 22a of the first base plate 22 of the first housing 12 is sealed by a third sealing portion 55a. In addition, the lid portion 26b of the cover 26 of the first housing 12 is also sealed to the cover body 26a of the cover 26 of the first housing 12. This prevents rainwater and the like from entering the controller 24. Furthermore, in the antenna device 10 according to this embodiment, the space between the second base plate 32 of the second housing 14 and the cylindrical portion 40a of the radome 40 is sealed by a second sealing portion 41. The space between the cylindrical member 54 and the opening 32a of the second base plate 32 of the second housing 14 is sealed by a fourth sealing portion 55b. In addition, the plate member 40b of the radome 40 of the second housing 14 is also sealed to the cylindrical portion 40a of the radome 40 by adhesive. This prevents rainwater and the like from entering the power supply 34, antenna unit 36, and motherboard 38. Therefore, the antenna device 10 according to this embodiment is designed to prevent dust, rainwater, and other contaminants from entering the various components.

[0047] The antenna device 10 is maintained, for example, periodically. In the first housing 12, the lid 26b can be removed from the cover body 26a, while maintenance equipment can be connected to the connectors 28a and 28b to check the operating status of the controller 24. In this way, the first housing 12 has a structure in which the cover body 26a, which fixes the connectors 28a and 28b, is fixed to the first base plate 22, and the lid 26b, which is the top surface, can be removed from the cover body 26a, making it easy to maintain the controller 24. For example, even when working several meters above the ground, the connectors 28a and 28b will not flap around due to wind, etc., ensuring the maintainability of the controller 24. Also, when maintaining the second housing 14, the radome 40 is removed from the second base plate 32. In this case, the power supply 34, antenna unit 36, and motherboard 38 can be exposed, making it easy to service the power supply 34, antenna unit 36, and motherboard 38.

[0048] As described above, the antenna device 10 according to this embodiment has a heat sink 16 sandwiched between the first base plate 22 and the second base plate 32 as a structural material, thermally connected to the first base plate 22 and the second base plate 32, and dissipating heat from the controller 24 and the antenna unit 36 ​​to the atmosphere. By using the heat sink 16 as a structural material, and arranging the first base plate 22 on one side of the heat sink 16 and the second base plate 32 on the other side, the heat from heat-generating components such as the controller 24 and the antenna unit 36 ​​of the antenna device 10 is transferred to the heat sink 16, cooling the heat-generating components such as the controller 24 and the antenna unit 36, while reducing the surface area of ​​the antenna device 10. Therefore, by reducing the surface area of ​​the antenna device 10 and using the heat sink 16 as a structural material, the overall size and weight of the antenna device 10 can be reduced, and the antenna device 10 can be formed with high rigidity.

[0049] According to at least one embodiment described above, it is possible to provide an antenna device 10 that has cooling performance, is small, lightweight, and highly rigid, and a radar device 1 including the antenna device 10.

[0050] While several embodiments of the present invention have been described, these embodiments are presented as examples only and are not intended to limit the scope of the invention. These novel embodiments can be carried out in a variety of other forms, and various omissions, substitutions, and modifications can be made without departing from the spirit of the invention. These embodiments and their variations are included in the scope and spirit of the invention, as well as in the claims and their equivalents. The claims of this application as they were at the time of filing are included below. [Note 1] The first base plate and A device provided on the first base plate that can generate heat when power is applied, A second base plate is positioned opposite the first base plate, An antenna portion provided on the second base plate, which can generate heat when power is applied, A heat sink is sandwiched between the first base plate and the second base plate as a structural material, thermally connected to the first base plate and the second base plate, and dissipates heat from the equipment and the antenna section to the atmosphere, An antenna device having the following features. [Note 2] The heat sink is formed in the shape of a cylindrical box and is disposed between the first base plate and the second base plate, having a first vent for introducing air and a second vent for exhausting the air from between the first base plate and the second base plate. A fan device is provided near the second vent of the heat sink, having a fan for directing the air from the first vent to the second vent. The antenna device described in Appendix 1. [Note 3] The heat sink has a plurality of surfaces that are thermally connected to the first base plate and the second base plate. The antenna device described in Appendix 1. [Note 4] A cover fixed to the first base plate and covering the equipment, A first sealing portion is provided between the cover and the first base plate, A radome fixed to the second base plate and covering the antenna section, A second sealing portion is provided between the radome and the second base plate, An antenna device as described in Appendix 3, having the following features. [Note 5] A cable connecting the aforementioned device and the aforementioned antenna unit, A cylindrical member is provided through the cable and positioned to penetrate the first base plate and the second base plate, A third sealing portion that seals the space between the cylindrical member and the first base plate, A fourth sealing portion that seals the space between the cylindrical member and the second base plate. An antenna device as described in Appendix 3, having the following features. [Note 6] A radar device having an antenna device as described in any one of the appendices 1 to 5. [Explanation of Symbols]

[0051] 1...Radar device, 10...Antenna device, 12...First housing, 13...Connecting member, 14...Second housing, 16...Heat sink, 16a...First vent, 18...Fan device, 18a...Box, 18a1...Exhaust passage, 18b...Fan, 22...First base plate, 22a...Opening, 24...Controller, 26...Cover, 26a...Cover body, 26b...Lid, 27...First Sealing section, 28a, 28b... Connector, 32... Second base plate, 32a... Opening, 34... Power supply, 36... Antenna section, 38... Motherboard, 40... Radome, 40a... Cylindrical section, 40b... Plate member, 41... Second sealing section, 52... Cable, 54... Cylindrical member, 54a... Flange section, 55a... Third sealing section, 55b... Fourth sealing section, 100... Support column, 100a... Metal fitting.

Claims

1. The first base plate and A device provided on the first base plate that can generate heat when power is applied, A second base plate is positioned opposite the first base plate, An antenna portion provided on the second base plate, which can generate heat when power is applied, A heat sink is sandwiched between the first base plate and the second base plate as a structural material, thermally connected to the first base plate and the second base plate, and dissipates heat from the equipment and the antenna section to the atmosphere, It has, The heat sink has a plurality of surfaces that are thermally connected to the first base plate and the second base plate. A cover fixed to the first base plate and covering the equipment, A first sealing portion is provided between the cover and the first base plate, A radome fixed to the second base plate and covering the antenna section, A second sealing portion is provided between the radome and the second base plate, An antenna device having the following features.

2. The heat sink is formed in the shape of a cylindrical box and has a first vent for introducing air and a second vent for exhausting the air from between the first base plate and the second base plate, and is placed between the first base plate and the second base plate. A fan device is provided near the second vent of the heat sink, having a fan for directing the air from the first vent to the second vent. The antenna device according to claim 1.

3. A first base plate and A device provided on the first base plate that can generate heat when power is applied, A second base plate is positioned opposite the first base plate, An antenna portion provided on the second base plate, which can generate heat when power is applied, A heat sink is sandwiched between the first base plate and the second base plate as a structural material, thermally connected to the first base plate and the second base plate, and dissipates heat from the equipment and the antenna section to the atmosphere, It has, The heat sink has a plurality of surfaces that are thermally connected to the first base plate and the second base plate. A cable connecting the aforementioned device and the aforementioned antenna unit, A cylindrical member is provided through the cable and positioned to penetrate the first base plate and the second base plate, A third sealing portion that seals the space between the cylindrical member and the first base plate, A fourth sealing portion that seals the space between the cylindrical member and the second base plate. An antenna device having the following features.

4. The heat sink is formed in the shape of a cylindrical box and is disposed between the first base plate and the second base plate, having a first vent for introducing air and a second vent for exhausting the air from between the first base plate and the second base plate. A fan device is provided near the second vent of the heat sink, having a fan for directing the air from the first vent to the second vent. The antenna device according to claim 3.

5. A radar device having the antenna device described in any one of claims 1 to 4.

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