Antenna equipment

Abstract

To provide an antenna device that can be easily assembled and disassembled. [Solution] The antenna device has a main body that extends in a first direction and has an opening that opens to one side of a second direction that intersects the first direction in at least a part of the first direction, and has a housing space in which an antenna can be housed, and a cover member that covers the opening and is made of a material that can transmit radio waves, and the main body has a cover holding part that holds the cover member detachably to the main body by inserting and removing the cover member from the main body in the first direction.

Description

Technical Field

[0001] The present invention relates to an antenna device.

Background Art

[0002] For example, a security antenna device may be provided at the entrance to a building or a room provided inside a building for the purpose of preventing theft or the like. When a user tries to take out an article equipped with a wireless communication unit, either intentionally or carelessly, such an antenna device receives a signal from the wireless communication unit and outputs information indicating that the signal has been received.

[0003] For example, Patent Document 1 discloses a configuration including an antenna and a cylindrical cover covering the antenna, with a part of the cover being a metal part that reflects radio waves and the remaining part of the cover being a non-metal part that allows radio waves to pass through.

Prior Art Documents

Patent Documents

[0004]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0005] However, in the configuration disclosed in Patent Document 1, when assembling the cover, it is necessary to join the metal part and the non-metal part, which is laborious. Also, for example, when attempting to disassemble the cover during maintenance of the antenna or the like, the joined metal part and non-metal part must be separated, making it difficult to disassemble the cover. An object of the present invention is to provide an antenna device that can be easily assembled and disassembled.

Means for Solving the Problems

[0006] To solve the above problems, the present invention employs the following embodiments. (1) An antenna device according to one aspect of the present invention comprises a main body portion having an opening that extends in a first direction and opens to one side of a second direction that intersects the first direction in at least a part of the first direction, and having a housing space capable of housing an antenna, and a cover member that covers the opening and is made of a material that can transmit radio waves, wherein the main body portion is provided with a cover holding portion that detachably holds the cover member to the main body portion by inserting and removing the cover member to the main body portion in the first direction. According to this embodiment, a cover member covering the opening of the main body, which has a housing space capable of housing an antenna, can be attached to and detached from the main body by inserting and removing the cover member in a first direction. Therefore, by inserting the cover member into the main body in a first direction, the antenna device can be easily assembled. Also, by pulling the cover member held in the main body in a first direction, the cover member can be easily removed from the main body. Therefore, when assembling the antenna device or performing maintenance on the antenna housed in the housing space, the assembly and disassembly of the antenna device can be easily performed. Furthermore, it becomes possible to reduce or eliminate the screws that fix the cover member. In addition, since the cover member, which is made of a material that can transmit radio waves, can be easily separated from other parts, separation according to the material becomes easy when disposing of the antenna device.

[0007] (2) In the antenna device according to the embodiment of (1) above, the cover holding portion is preferably formed on both sides of the main body portion in a third direction that intersects the second direction when viewed from the first direction with respect to the opening, and has a pair of cover holding grooves extending in the first direction, and the cover member is preferably insertable and removable from the main body portion in the first direction by inserting the cover ends located on both sides of the cover member in the third direction into the pair of cover holding grooves. According to this embodiment, a pair of cover retaining grooves are formed in the cover retaining portion, and the cover end of the cover member is inserted into the cover retaining groove, thereby allowing the cover member to be inserted into and removed from the main body in a first direction. In this way, by sliding the cover member along the cover retaining groove, the cover member can be easily inserted into and removed from the main body, and the assembly and disassembly of the antenna device can be easily performed.

[0008] (3) In the antenna device according to the embodiment of (2) above, the main body portion comprises an inner member having an equipment fixing portion capable of fixing the antenna, and an outer surface of the main body portion that surrounds the inner member and has the opening. It is preferable that the outer member is included. According to this embodiment, since the outer member covers the periphery of the inner member having the equipment fixing portion, the antenna fixed to the equipment fixing portion and the bolts for fixing the antenna to the equipment fixing portion are less likely to be exposed to the outside of the antenna device.

[0009] (4) In the antenna device according to the embodiment of (3) above, the outer member has a pair of opening edge portions extending in the first direction on both sides of the opening in the third direction, the inner member has a pair of extending portions extending in the first direction, spaced apart on the other side of each of the pair of opening edge portions in the second direction, and the pair of cover retaining grooves are preferably formed between the corresponding opening edge portion and the extending portion of the pair of opening edge portions and the pair of extending portions. According to this embodiment, the outer member has a pair of open edge portions, and the inner member has a pair of extended portions, so that a pair of cover retaining grooves can be formed by the outer member that forms the outer surface of the main body and the inner member that has the equipment fixing portion. For this reason, there is no need to prepare separate parts to form the pair of cover retaining grooves, and the antenna device can be constructed with a small number of parts.

[0010] (5) In an antenna device according to the embodiment of (3) or (4) above, the outer member preferably has a pair of opening edge portions extending in the first direction in portions located on both sides in the third direction with respect to the opening, and a first plate-like portion that forms a first outer surface of the outer surface facing the other side in the second direction, at a position spaced apart from the pair of opening edge portions on the other side in the second direction, and the inner member preferably has a pair of extending portions extending in the first direction, spaced apart from the pair of extending portions on the other side in the second direction, and a second plate-like portion having the equipment fixing portion at a position spaced apart from the pair of extending portions on the other side in the second direction, and spaced apart from the first plate-like portion on one side in the second direction. According to this embodiment, the outer member has a first plate-like portion, and the inner member has a second plate-like portion having an equipment fixing portion, which is spaced apart on the other side in the second direction from the pair of extending portions and spaced apart on one side in the second direction from the first plate-like portion. Therefore, screws for fixing the antenna to the equipment fixing portion can be placed between the first plate-like portion and the second plate-like portion. Thus, it is possible to prevent screws for fixing the antenna to the equipment fixing portion from being exposed to the outside of the main body.

[0011] (6) In the antenna device according to the embodiment of (5) above, the outer member has a pair of first connecting parts that connect each of the pair of open edge portions to each of the ends of the first plate-shaped portion in the third direction, and the inner member has a pair of second connecting parts that connect each of the pair of extended portions to each of the ends of the second plate-shaped portion in the third direction, and each of the pair of second connecting parts is preferably joined to each of the pair of first connecting parts. In this embodiment, since the pair of first connecting parts of the outer member and the pair of second connecting parts of the inner member are joined together, the outer member and the inner member constituting the main body are integrated. Therefore, the assembly of the antenna device can be easily performed.

[0012] (7) In an antenna device according to any of the embodiments described in (1) to (6) above, it is preferable that the opening is formed along the entire length of the main body in the first direction. According to this embodiment, since the opening is formed along the entire length of the main body in the first direction, the main body has a tubular or trough-like shape that extends along the entire length of the main body in the first direction, and can be easily manufactured.

[0013] (8) In an antenna device according to any of the embodiments of (1) to (7) above, the main body is preferably provided with a partitioning member that divides the housing space into a first housing space on the first side of the first direction and a second housing space on the second side of the first direction, and the first housing space has a first opening that opens to the first side of the first direction. According to this embodiment, the main body is divided into a first storage space and a second storage space by a partitioning member. This allows for the storage of different items in the first and second storage spaces. Items can be easily stored in the first storage space through a first opening.

[0014] (9) In the antenna device according to the embodiment of (8) above, the cover member preferably comprises a first cover member that covers the first housing space from one side in the second direction and a second cover member that covers the second housing space from one side in the second direction, and the partition member preferably has a cover partition portion sandwiched between the first cover member and the second cover member. In this embodiment, the cover section of the partition member is sandwiched between the first cover member that covers the first storage space and the second cover member that covers the second storage space. For this reason, for example, the first cover member can be easily removed from the first side in the first direction, but the movement of the second cover member toward the first side in the first direction is restricted by the partition member, making it difficult to remove the second cover member. Consequently, the second storage space is less accessible from the outside compared to the first storage space.

[0015] (10) In the antenna device according to the embodiment of (9) above, it is preferable that the device further comprises a detection unit for detecting a signal received by the antenna, and that the antenna and the detection unit are housed in the second housing space. According to this embodiment, by housing the antenna and detection unit in a second containment space that is difficult to access from the outside, it is possible to prevent anyone other than the administrator of the antenna device from touching the antenna or detection unit.

[0016] (11) In an antenna device according to either of the embodiments of (8) or (10) above, it is preferable to further include a speaker housed in the first housing space that outputs information indicating that the detection unit has detected the signal. According to this embodiment, by housing the speaker in a first housing space that is easily accessible from the outside, it is possible to easily access the speaker when adjusting the speaker volume, etc.

[0017] (12) In an antenna device according to any of the embodiments of (8) to (11) above, it is preferable to further include an opening / closing lid that is detachably provided in the first opening and capable of closing the first housing space from the first side in the first direction. According to this embodiment, by closing the first storage space with an opening and closing lid, it is possible to prevent unintentional access from the outside to the articles stored in the first storage space.

[0018] (13) In an antenna device according to any of the embodiments of (1) to (9) above, it is preferable that the main body is arranged with the first opening facing upward and the first direction aligned with the vertical direction. According to this embodiment, by aligning the main body vertically, the antenna device can be installed, for example, upright on the floor. This minimizes the reduction of indoor space caused by installing the antenna device, allowing for more effective use of indoor space.

[0019] (14) In the antenna device according to any one of the aspects (1) to (13) above, it is preferable that the cover member is formed in a flat plate shape that spreads along a plane intersecting the second direction. According to this aspect, since the cover member is formed in a flat plate shape, the cover member can be easily manufactured with a simple configuration.

[0020] (15) In the antenna device according to any one of the aspects (1) to (14) above, it is preferable that the main body portion is formed of a material having higher rigidity than the cover member. According to this aspect, the main body portion can firmly hold the cover member held by the cover holding portion, and suppress deformation of the cover member.

[0021] (16) In the antenna device according to the aspect (15) above, it is preferable that the main body portion is formed of a material having radio wave non-permeability. According to this aspect, since the main body portion is formed of a material having radio wave non-permeability, radio waves to the antenna will pass through the cover member formed of a material having radio wave permeability. Thereby, the antenna device can be given directivity.

[0022] (17) In the antenna device according to the aspect (15) or (16) above, it is preferable that the main body portion is made of metal. According to this aspect, since the main body portion is made of metal, the main body portion can be made to have higher rigidity than the cover member and radio wave non-permeability at low cost and easily.

Effect of the Invention

[0023] According to one aspect of the present invention, assembly and disassembly can be easily performed.

Brief Description of the Drawings

[0024] [Figure 1] It is a schematic diagram showing the overall configuration of a power supply system including an antenna device according to an embodiment of the present invention. [Figure 2]This is a perspective view showing the antenna device described above. [Figure 3] This is a perspective view showing the antenna device with the cover removed. [Figure 4] This is a perspective view showing the upper end of the main body of the antenna device described above. [Figure 5] This is a view of the main body shown above, seen from above. [Figure 6] This figure shows a portion of the upper part of the main body, and is a cross-sectional view taken along the line VI-VI in Figure 5. [Figure 7] This is a view of the upper part of the main body from a second direction. [Figure 8] This is a cross-sectional view of the lower part of the antenna device, taken from a third direction. [Modes for carrying out the invention]

[0025] Hereinafter, embodiments for implementing the antenna device according to the present invention will be described with reference to the attached drawings. In this embodiment, the antenna device 5 is provided, for example, in a power supply system 1. However, the present invention is not limited to this embodiment.

[0026] Figure 1 is a schematic diagram showing the overall configuration of a power supply system 1 equipped with an antenna device according to an embodiment of the present invention. (Power supply system) As shown in Figure 1, the power supply system 1 comprises a power storage device 2, an antenna device 5, and a user-friendly fixture 4. This power supply system 1 is installed in a controlled area R set up within a facility such as an office, research facility, hospital, school, library, and commercial facility. Here, the controlled area R is set up within an office 100 having an entrance / exit 101. In this embodiment, the controlled area R is set up for one office 100. This office 100, for example, has a rectangular shape in plan view and is surrounded on all four sides by walls 100w.

[0027] The energy storage device 2 is a portable energy storage device capable of charging and discharging. The energy storage device 2 can supply power to the user's electrical equipment 200 used within the controlled area R. More specifically, the energy storage device 2 can supply power to electrical equipment 200 such as laptop computers, tablet devices, and smartphones that users bring into the controlled area R from outside and use within the controlled area R. Such electrical equipment 200 is equipped with a rechargeable battery (not shown), such as a lithium battery, which can be charged using the power supplied by the energy storage device 2. The energy storage device 2 is only usable within the controlled area R. In other words, if the energy storage device 2 is about to be taken outside the controlled area R, the antenna device 5 (described later) will output an alarm notification, ensuring that it is only used within the controlled area R.

[0028] The energy storage device 2 is equipped with a wireless communication unit (not shown). The wireless communication unit is capable of outputting signals to the outside via wireless communication. The wireless communication unit is a so-called IC tag. In this embodiment, the wireless communication unit outputs a predetermined signal when it receives a detection signal from the antenna device 5, which will be described later. The energy storage device 2 can be charged by the charging device 7 located in the office 100. The charging device 7 is located within the controlled area R, but outside the wireless communication range A of the antenna device 5.

[0029] The user-accessible furniture 4 is located within the controlled area R, outside the wireless communication range A of the antenna device 5. The user-accessible furniture 4 is accessible to the power storage device 2 and the users' electrical equipment 200. In this embodiment, the user-accessible furniture 4 consists of multiple desks 4A and multiple tables 4B. Each desk 4A is basically used by one user. Similarly, each table 4B may be used by one user, or it may be used by multiple users or for the purpose of taking a break.

[0030] Users place the electrical equipment 200 they brought into the controlled area R, as well as the energy storage device 2 provided within the controlled area R, onto the tabletops of desk 4A and table 4B. They then connect the energy storage device 2 and the electrical equipment 200 with a connecting cable (not shown) and use the electrical equipment 200 while receiving power from the energy storage device 2.

[0031] (Antenna device) The antenna device 5 is installed near the entrance / exit 101 of the controlled area R. If there are multiple entrance / exit 101 in the controlled area R, the antenna device 5 is installed near each of the entrance / exit 101. The antenna device 5 is placed on the floor surface F near the entrance / exit 101.

[0032] Figure 2 is a perspective view showing the antenna device 5 described above. Figure 3 is a perspective view showing the antenna device 5 with the cover member 56 removed. As shown in Figures 2 and 3, the antenna device 5 comprises a base portion 51 installed on the floor surface F, a device body 52 extending upward from the base portion 51, and an antenna 70 (see Figure 3) built into the device body 52. In the following description, the direction in which the device body 52 extends is referred to as the first direction D1, the horizontal direction intersecting the first direction D1 is referred to as the second direction D2, and the horizontal direction intersecting the second direction D2 is referred to as the third direction D3. In this embodiment, the device body 52 is provided so as to rise upward from the base portion 51, with the first direction D1 aligned with the vertical direction.

[0033] The base portion 51 comprises a base plate 511 provided at the lower end of the device body 52, and a plurality of grounding members 512 provided on the lower surface of the base plate 511.

[0034] The base plate 511 is positioned above the floor surface F, supported from below by a plurality of grounding members 512. The base plate 511 is plate-shaped, extending in a direction intersecting the first direction D1 from the lower end of the device body 52. ​​In this embodiment, the base plate 511 is, for example, rectangular when viewed from above. The base plate 511 may also be circular, elliptical, polygonal, or the like when viewed from above.

[0035] The multiple grounding members 512 are, for example, adjusters provided at the four corners of the lower surface of the base plate 511. Instead of adjusters, the multiple grounding members 512 may be casters. The arrangement and number of the multiple grounding members 512 can be changed as appropriate.

[0036] The device body 52 comprises a main body portion 53 and a cover member 56 (see Figure 2). The main body 53 is made of, for example, a metal that is radio wave impermeable and does not transmit radio waves. The main body 53 extends from the base plate 511 in the first direction D1 (upward direction) to the first side (upward). The main body 53 has an opening K that opens to one side in the second direction D2 in at least a portion of the first direction D1. In this embodiment, the opening K is formed along the entire length of the main body 53 in the first direction D1.

[0037] Figure 4 is a perspective view showing the upper end of the main body 53 of the antenna device 5. Figure 5 is a view of the main body 53 from above. As shown in Figures 4 and 5, the main body 53 has a double structure formed by combining an outer member 55 and an inner member 54. The outer member 55 and the inner member 54 are each C-shaped, opening toward one side in the second direction D2 when viewed from above, and are also formed in a trough shape extending toward the first direction D1.

[0038] The outer member 55 surrounds the inner member 54 and forms the outer surface of the main body 53. The outer member 55 has a first plate-like portion 551, a pair of first connecting portions 553A and 553B, and a pair of open edge portions 552A and 552B.

[0039] The first plate-like portion 551 forms the first outer surface 53f of the main body portion 53, facing the other side in the second direction D2. The first plate-like portion 551 is provided at a position spaced apart from the pair of open end edges 552A and 552B on the other side in the second direction D2. When viewed from the second direction D2, the first plate-like portion 551 is formed in a rectangular shape with the first direction D1 (vertical direction) as the longer side and the third direction D3 as the shorter side.

[0040] The pair of first connecting portions 553A and 553B extend from both ends of the first plate-like portion 551 in the third direction D3 to one side in the second direction D2. Each of the pair of first connecting portions 553A and 553B is formed in a rectangular shape with the first direction D1 (vertical direction) as the longer side and the second direction D2 as the shorter side when viewed from the third direction D3. The length of the first direction D1 of each of the pair of first connecting portions 553A and 553B is the same as the length of the first direction D1 of the first plate-like portion 551. Each of the pair of first connecting portions 553A and 553B connects each of the ends of the first plate-like portion 551 in the third direction D3 to each of the pair of open edge portions 552A and 552B. The first connecting portion 553A forms the second outer surface 53g of the main body portion 53, facing one side in the third direction D3. The first connecting portion 553B forms a third outer surface 53h of the main body portion 53 that faces the other side of the third direction D3.

[0041] Each of the pair of open edge portions 552A and 552B extends inward in the third direction D3 from each of the pair of first connecting portions 553A and 553B. Open edge portion 552A extends from the first connecting portion 553A to the other side of the third direction D3. Open edge portion 552B extends from the first connecting portion 553A to one side of the third direction D3.

[0042] Each of the pair of open edge portions 552A and 552B extends in the first direction D1. Each of the pair of open edge portions 552A and 552B is formed in a rectangular shape with the first direction D1 (vertical direction) as the longer side and the third direction D3 as the shorter side when viewed from the second direction D2. The length of each of the pair of open edge portions 552A and 552B in the first direction D1 is the same as the length of the first plate-like portion 551 and the pair of first connecting portions 553A and 553B in the first direction D1. An opening K is formed between the pair of open edge portions 552A and 552B. In other words, the outer member 55 has an opening K. The pair of open edge portions 552A and 552B are located on both sides of the opening K in the third direction D3. The pair of open edge portions 552A and 552B form fourth outer surfaces 53j and 53k facing one side in the second direction D2, on both sides in the third direction D3 relative to the opening K.

[0043] The inner member 54 is provided inside the outer member 55. The inner member 54 has a second plate-like portion 541, a pair of second connecting portions 543A, 543B, and a pair of extending portions 542A, 542B.

[0044] The second plate-like portion 541 is positioned spaced apart from the pair of open end edges 552A and 552B on the other side in the second direction D2, and spaced apart from the first plate-like portion 551 on one side in the second direction D2. The second plate-like portion 541 is formed in a rectangular shape with the first direction D1 (vertical direction) as the longer side and the third direction D3 as the shorter side when viewed from the second direction D2. The length of the second plate-like portion 541 in the first direction D1 is slightly shorter than the length of the first plate-like portion 551 in the first direction D1, and the upper end of the second plate-like portion 541 is positioned a few millimeters lower than the upper end of the first plate-like portion 551 (outer member 55). As shown in Figure 4, the second plate-shaped portion 541 has a plurality of female screw holes 54h formed therein. The portion of the second plate-shaped portion 541 in which these plurality of female screw holes 54h are formed is an equipment fixing portion 54b on which the antenna 70, detection unit 72, and speaker 75 can be fixed. In other words, the second plate-shaped portion 541 has an equipment fixing portion 54b.

[0045] As shown in Figures 4 and 5, the pair of second connecting portions 543A and 543B extend from both ends of the second plate-like portion 541 in the third direction D3 to one side in the second direction D2. The pair of second connecting portions 543A and 543B are in contact with the pair of first connecting portions 553A and 553B. In this embodiment, the pair of second connecting portions 543A and 543B are joined to the corresponding first connecting portions 553A and 553B of the pair of first connecting portions 553A and 553B by welding, bonding, screw fastening, etc. Each of the pair of second connecting portions 543A and 543B is formed in a rectangular shape with the first direction D1 (vertical direction) as the longer side and the second direction D2 as the shorter side when viewed from the third direction D3. The length of the first direction D1 of each of the pair of second connecting portions 543A and 543B is the same as the length of the first direction D1 of the second plate-like portion 541. Each of the pair of second connecting portions 543A and 543B connects each of the ends of the second plate-shaped portion 541 in the third direction D3 to each of the pair of extending portions 542A and 542B.

[0046] As shown in Figure 5, the pair of extended portions 542A and 542B are positioned spaced apart from the pair of open end edges 552A and 552B on the other side of the second direction D2, and spaced apart from the second plate-like portion 541 on one side of the second direction D2. The pair of extended portions 542A and 542B extend inward from the pair of second connecting portions 543A and 543B in the third direction D3. Extended portion 542A extends from the second connecting portion 543A on the other side of the third direction D3. The inner edge 542s of extended portion 542A in the third direction D3 protrudes on the other side of the third direction D3 relative to the inner edge 552s of the open end edge 552A in the third direction D3. Extended portion 542B extends from the second connecting portion 543B on one side of the third direction D3. The inner edge 542t of the extended portion 542B in the third direction D3 protrudes to the other side of the third direction D3 relative to the inner edge 552t of the open end edge portion 552B in the third direction D3.

[0047] Each of the pair of extending portions 542A and 542B extends in the first direction D1. Each of the pair of extending portions 542A and 542B is formed in a rectangular shape with the first direction D1 (vertical direction) as the longer side and the third direction D3 as the shorter side when viewed from the second direction D2. The length of each of the pair of extending portions 542A and 542B in the first direction D1 is the same as the length of the second plate-like portion 541 and the pair of second connecting portions 543A and 543B in the first direction D1.

[0048] The main body portion 53 is provided with a cover holding portion 60. The cover holding portion 60 detachably holds the cover member 56, described later, to the main body portion 53 by inserting and removing the cover member 56 from the main body portion 53 in the first direction D1. In this embodiment, the cover holding portion 60 has a pair of cover holding grooves 61A and 61B. Each of the pair of cover holding grooves 61A and 61B is formed between each of the pair of open edge portions 552A and 552B, each of the pair of extended portions 542A and 542B, and one of the pair of first connecting portions 553A and 553B in the second direction D2. Each of the pair of cover holding grooves 61A and 61B is recessed outward in the third direction D3 on both sides of the opening K of the main body portion 53 and extends along the entire length of the first direction D1. At the upper end of the main body 53, each of the pair of cover retaining grooves 61A and 61B is open to the first side (upwards) in the first direction D1.

[0049] Figure 6 shows a part of the upper part of the main body 53, and is a cross-sectional view taken along the line VI-VI in Figure 5. Figure 7 is a view of the upper part of the main body 53 from the second direction D2. As shown in Figures 3 to 7, such a main body 53 has a housing space S inside the inner member 54. Equipment such as an antenna 70, a detection unit 72, and a speaker 75 can be housed in the housing space S.

[0050] The device body 52 further includes a partition member 64. The partition member 64 is provided in the middle of the first direction D1 within the main body 53. In this embodiment, the partition member 64 is provided at a distance of, for example, about 50 to 200 mm from the first end (upper end) of the main body 53 in the first direction D1 to the second side (lower side) of the first direction D1.

[0051] As shown in Figures 4 and 6, the partition member 64 integrally comprises a plate-shaped portion 641, a cover partition portion 642, and a rising wall portion 643. The plate-shaped portion 641 is plate-shaped and extends in a direction intersecting the first direction D1, and is located inside the inner member 54 when viewed from above. The plate-shaped portion 641 of the partition member 64 divides the accommodation space S into a first accommodation space S1 on the first side (upper side) of the first direction D1 (vertical direction) and a second accommodation space S2 on the second side (lower side) of the first direction D1.

[0052] The cover compartment 642 extends from the plate-like portion 641 to one side in the second direction D2. The cover compartment 642 extends outward in the third direction D3 on one side in the second direction D2 relative to the pair of extending portions 542A and 542B. The outer end of the cover compartment 642 in the third direction D3 is housed inside the pair of cover retaining grooves 61A and 61B. The cover compartment 642 divides the opening K and the pair of cover retaining grooves 61A and 61B, which are located on both sides of the opening K in the third direction D3, into a first side and a second side in the first direction D1.

[0053] The rising wall portion 643 rises from the other end of the plate-like portion 641 in the second direction D2 to the first side in the first direction D1. The rising wall portion 643 is fixed to the second plate-like portion 541 of the inner member 54 by screws 645.

[0054] Furthermore, a support member 646 is provided on the plate-like portion 641. The support member 646 has a first support wall 647 that protrudes from the plate-like portion 641 to the first side in the first direction D1. As shown in Figure 4, the first support wall 647 extends in the third direction D3 between a pair of extending portions 542A and 542B. The first support wall 647 prevents the lower end of the first cover member 57, which will be described later, from deforming to the other side in the second direction D2.

[0055] Figure 8 is a cross-sectional view of the lower part of the antenna device 5 as seen from the third direction D3. As shown in Figures 3, 4, 6, and 8, the main body 53 has a first opening 52p (see Figures 4 and 6) and a second opening 52q (see Figures 3 and 8). As shown in Figures 4 and 6, the first opening 52p is located at the first end (upper end) of the main body 53 in the first direction D1, and opens the first accommodation space S1 to the first side in the first direction D1. As shown in Figures 3 and 8, the second opening 52q is located at the second end (lower end) of the main body 53 in the second direction D1, and opens the second accommodation space S2 to the second side in the first direction D1.

[0056] As shown in Figures 3, 6, and 7, an opening / closing lid 80 is provided at the first end (upper end) of the main body 53 in the first direction D1. As shown in Figures 6 and 7, the opening / closing lid 80 is detachably provided at the first opening 52p and can close the first storage space S1 from the first side in the first direction D1. As shown in Figure 6, the opening / closing lid 80 has a lid body 81, a fixing piece 82, and a second support wall 83. The lid body 81 is rectangular when viewed from above and is formed to overlap with the main body 53. The fixing piece 82 extends from the other end of the lid body 81 in the second direction D2 to the second side in the first direction D1. The fixing piece 82 is provided along the first plate-shaped portion 551 of the outer member 55 on one side in the second direction D2. The fixing piece 82 is fixed to the first plate-shaped portion 551 of the outer member 55 by bolts 85.

[0057] The second support wall 83 extends from the lid body 81 to the second side in the first direction D1. The second support wall 83 extends in the third direction D3 between a pair of extending portions 542A and 542B. The second support wall 83 prevents the upper end of the first cover member 57, described later, from deforming to the other side in the second direction D2.

[0058] As shown in Figures 3 and 8, a bracket 59 for fixing the antenna device 5 to the floor surface F is provided at the second end (lower end) of the main body 53 in the first direction D1. The bracket 59 is L-shaped when viewed from the second direction D2 and is fixed to the lower end of the second plate-shaped portion 541 of the inner member 54 by screws 591. The base plate 511 has a through hole 511h that penetrates the base plate 511 in the first direction D1, at a position that overlaps with the second housing space S2, which is the inner part of the inner member 54, when viewed from above. The bracket 59 extends from the lower end of the second plate-shaped portion 541 through the through hole 511h to the second side (downward) of the first direction D1. A fixing portion 592 extending parallel to the floor surface F is provided at the lower end of the bracket 59, and the fixing portion 592 can be fixed to the floor surface F with screws or double-sided adhesive tape (not shown).

[0059] As shown in Figures 2 and 6, the cover member 56 is provided to cover the opening K. In this embodiment, the cover member 56 comprises a first cover member 57 and a second cover member 58. Each of the first cover member 57 and the second cover member 58 is made of a material that can transmit radio waves. In this embodiment, each of the first cover member 57 and the second cover member 58 is made of nonwoven fabric.

[0060] The first cover member 57 is formed to cover the first housing space S1 from one side in the second direction D2. The second cover member 58 is formed to cover the second housing space S2 from one side in the second direction D2. As shown in Figure 5, the cover ends 57s, 57t, 58s, and 58t on both sides in the third direction D3 of each of the first cover member 57 and the second cover member 58 are housed in a pair of cover retaining grooves 61A and 61B. With this configuration, the movement of each of the first cover member 57 and the second cover member 58 in the second direction D2 and the third direction is restricted. Each of the first cover member 57 and the second cover member 58 is slidable in the first direction D1 along the pair of cover retaining grooves 61A and 61B. In addition, the middle portion of the upper end of the first cover member 57 in the third direction D3 abuts against the first support wall 647, thereby restricting deformation to the other side in the second direction D2. Of the lower end portion of the first cover member 57, the intermediate portion in the third direction D3 abuts against the second support wall 83, thereby restricting deformation to the other side in the second direction D2.

[0061] As shown in Figures 2 and 6, the cover partition portion 642 of the partition member 64 is sandwiched between the first cover member 57 and the second cover member 58. The first cover member 57 is provided between the partition member 64 and the opening / closing lid 80. The first cover member 57, whose cover ends 57s and 57t are housed in a pair of cover retaining grooves 61A and 61B, is restricted from moving in the first direction D1 (vertical direction) by abutting against one end of the lid body 81 of the opening / closing lid 80 in the second direction D2 and the cover partition portion 642 of the partition member 64. The second cover member 58 is provided between the partition member 64 and the base plate 511. The second cover member 58, whose cover ends 58s and 58t are housed in a pair of cover retaining grooves 61A and 61B, is restricted from moving in the first direction D1 (vertical direction) by abutting against the cover partition portion 642 of the partition member 64 and the base plate 611.

[0062] The first cover member 57 can be inserted into and removed from the main body 53 in the first direction D1 by removing the opening / closing lid 80 from the main body 53, through the portion where the cover retaining grooves 61A and 61B are opened upward at the upper end of the main body 53. On the other hand, in order to insert or remove the second cover member 58 from the main body 53 in the first direction D1, it is necessary to remove the opening / closing lid 80 from the main body 53, pull out the first cover member 57 to the first side in the first direction D1, and then remove the screws 645 to remove the partition member 64. In this state, the cover member can be inserted or removed from the main body 53 in the first direction D1 through the upper end openings of the cover retaining grooves 61A and 61B at the upper end of the main body 53.

[0063] As shown in Figures 3, 6, and 7, the main body of the device 52 houses equipment such as an antenna 70, a detection unit 72, and a speaker 75. In this embodiment, the main body of the device 52 houses the antenna 70, the detection unit 72, and the speaker 75.

[0064] Antenna 70 is capable of wireless communication with the wireless communication unit of the energy storage device 2 (see Figure 2). Antenna 70 may include at least one of a transmitting antenna for transmitting signals to the wireless communication unit and a receiving antenna for receiving signals from the wireless communication unit, or it may include a transmitting and receiving antenna for sending and receiving signals to and from the wireless communication unit. As shown in Figure 1, in this embodiment, the antenna 70 outputs a predetermined detection signal within a preset range A (for example, a radius of about 1.5 to 2.5 m). When the antenna 70 receives the detection signal from the antenna 70 with the wireless communication unit, it receives a predetermined signal output from the wireless communication unit.

[0065] The detection unit 72 detects the signal received by the antenna 70. If the detection unit 72 receives a signal from the wireless communication unit with the antenna 70 within the wireless communication range A, it outputs a command to the speaker 75 indicating that the signal has been received. Based on a command from the detection unit 72, the speaker 75 outputs information indicating that it has detected a signal from the wireless communication unit using the antenna 70, such as an alarm sound or a message.

[0066] As shown in Figures 6 and 7, in this embodiment, the antenna 70 and the detection unit 72 are housed in the second housing space S2. The antenna 70 and the detection unit 72 are fixed to the second plate-shaped portion 541 within the second housing space S2 by screws 77. As shown in Figures 5 and 7, in this embodiment, the speaker 75 is housed in the first housing space S1. Within the first housing space S1, the speaker 75 is fixed to the second plate-shaped portion 541 via a bracket 79 using screws 791. As shown in Figure 4, the main body portion 53 has a plurality of holes 53p formed therein, for example, that penetrate the main body portion 53 and allow alarm sounds emitted by the speaker 75 to pass through.

[0067] In this power supply system 1, after entering the controlled area R, the user takes the energy storage device 2 from the charging device 7. Then, the user connects the electrical equipment 200 to the energy storage device 2 using the equipment 4 and performs their work. When a user leaves the management area R after completing their work, they return the energy storage device 2 to the charging device 7 and then pass through the entrance / exit 101. If a user enters the wireless communication range A of the antenna device 5 while holding the power storage device 2, the antenna device 5 will receive a signal from the wireless communication unit and an alarm will sound. In this way, the user can be warned not to take the power storage device 2 outside the controlled area R.

[0068] Thus, in this embodiment, the antenna device 5 has a main body portion 53 having an opening K that extends in a first direction D1 and opens to one side of a second direction D2 that intersects the first direction D1 in at least a part of the first direction D1, and a housing space S capable of housing the antenna 70, and a cover member 56 that covers the opening K and is made of a material that can transmit radio waves, and the main body portion 53 is configured to have a cover holding portion 60 that holds the cover member 56 detachably to the main body portion 53 by inserting and removing the cover member 56 from the main body portion 53 in the first direction D1. With this configuration, the cover member 56 covering the opening K of the main body 53, which has a housing space S capable of accommodating the antenna 70, can be easily attached to and detached from the main body 53 by inserting and removing it in a first direction D1. Therefore, by inserting the cover member 56 into the main body 53 in the first direction D1, the antenna device 5 can be easily assembled. Also, by removing the cover member 56 held by the main body 53 in the first direction D1, the cover member 56 can be easily removed from the main body 53. Thus, when assembling the antenna device 5, or when performing maintenance on the antenna 70 housed in the housing space S, the assembly and disassembly of the antenna device 5 can be easily performed. Furthermore, it becomes possible to reduce or eliminate the screws that fix the cover member 56. In addition, since the cover member 56, which is made of a material that can transmit radio waves, can be easily separated from other parts, separation according to the material becomes easy when disposing of the antenna device 5.

[0069] The cover retaining portion 60 is formed on both sides of the main body portion 53 in a third direction D3 that intersects the second direction D2 when viewed from the first direction D1 with respect to the opening K, and has a pair of cover retaining grooves 61A and 61B that extend in the first direction D1. The cover member 56 is configured to be insertable and removable from the main body portion 53 in the first direction D1 by inserting the cover ends 57s, 57t, 58s, and 58t located on both sides of the third direction D3 of the cover member 56 into the pair of cover retaining grooves 61A and 61B, respectively. In this configuration, a pair of cover retaining grooves 61A and 61B are formed in the cover retaining portion 60, and the cover ends 57s, 57t, 58s, and 58t of the cover member 56 are inserted into the cover retaining grooves 61A and 61B, so that the cover member 56 can be inserted into and removed from the main body portion 53 in the first direction D1. In this way, by sliding the cover member 56 along the cover retaining grooves 61A and 61B, the cover member 56 can be easily inserted into and removed from the main body portion 53, and the assembly and disassembly of the antenna device 5 can be easily performed.

[0070] The main body 53 is configured to include an inner member 54 having an equipment fixing portion 54b to which the antenna 70 can be fixed, and an outer member 55 that surrounds the inner member 54, forms the outer surface of the main body 53, and has an opening K. With this configuration, the outer member 55 covers the periphery of the inner member 54 having the equipment fixing portion 54b, so that the antenna 70 fixed to the equipment fixing portion 54b and the bolts used to fix the antenna 70 to the equipment fixing portion 54b are less likely to be exposed to the outside of the antenna device 5.

[0071] The outer member 55 has a pair of opening edge portions 552A and 552B extending in the first direction D1 at the portions located on both sides in the third direction D3 with respect to the opening K, and the inner member 54 has a pair of extending portions 542A and 542B that are spaced apart on the other side in the second direction D2 with respect to each of the pair of opening edge portions 552A and 552B and extend in the first direction D1, and the pair of cover retaining grooves 61A and 61B are formed between the corresponding opening edge portions 552A and 552B and the pair of extending portions 542A and 542B, respectively. With this configuration, the outer member 55 has a pair of open edge portions 552A and 552B, and the inner member 54 has a pair of extended portions 542A and 542B. Thus, the outer member 55 that forms the outer surface of the main body portion 53 and the inner member 54 that has the equipment fixing portion 54b can form a pair of cover retaining grooves 61A and 61B. For this reason, there is no need to prepare separate parts to form the pair of cover retaining grooves 61A and 61B, and the antenna device 5 can be constructed with a small number of parts.

[0072] The outer member 55 has a pair of opening edge portions 552A and 552B extending in the first direction D1 at the portions located on both sides in the third direction D3 with respect to the opening K, and a first plate-like portion 551 that forms a first outer surface 53f facing the other side in the second direction D2, spaced apart from the pair of opening edge portions 552A and 552B. The inner member 54 has a pair of extending portions 542A and 542B that are spaced apart from each of the pair of opening edge portions 552A and 552B in the other side in the second direction D2 and extend in the first direction D1, and a second plate-like portion 541 having an equipment fixing portion 54b, spaced apart from the pair of extending portions 542A and 542B in the other side in the second direction D2 and spaced apart from the first plate-like portion 551 in one side in the second direction D2. In this configuration, the outer member 55 has a first plate-shaped portion 551, and the inner member 54 has a second plate-shaped portion 541 having an equipment fixing portion 54b, which is spaced apart from the pair of extending portions 542A and 542B on the other side of the second direction D2, and spaced apart from the first plate-shaped portion 551 on one side of the second direction D2. Therefore, screws for fixing the antenna 70 to the equipment fixing portion 54b can be placed between the first plate-shaped portion 551 and the second plate-shaped portion 541. Thus, it is possible to prevent screws for fixing the antenna 70 to the equipment fixing portion 54b from being exposed to the outside of the main body portion 53.

[0073] The outer member 55 has a pair of first connecting parts 553A and 553B that connect each of the pair of open edge parts 552A and 552B to each of the ends of the first plate-like part 551 in the third direction D3, and the inner member 54 has a pair of second connecting parts 543A and 543B that connect each of the pair of extended parts 542A and 542B to each of the ends of the second plate-like part 541 in the third direction D3, and each of the pair of second connecting parts 543A and 543B is joined to each of the pair of first connecting parts 553A and 553B. In this configuration, the pair of first connecting parts 553A and 553B of the outer member 55 and the pair of second connecting parts 543A and 543B of the inner member 54 are joined together, so that the outer member 55 and the inner member 54 that constitute the main body 53 are integrated. Therefore, the assembly of the antenna device 5 can be easily performed.

[0074] The opening K is formed along the entire length of the main body 53 in the first direction D1. With this configuration, since the opening K is formed along the entire length of the main body 53 in the first direction D1, the main body 53 has a tubular or trough-like shape that extends along the entire length of the first direction D1, making it easy to manufacture.

[0075] The main body 53 is equipped with a partitioning member 64 that divides the storage space S into a first storage space S1 on the first side of the first direction D1 and a second storage space S2 on the second side of the first direction D1, and the first storage space S1 has a first opening 52p that opens to the first side of the first direction D1. In this configuration, the main body 53 is divided into a first storage space S1 and a second storage space S2 by a partitioning member 64. This allows for the storage of different items in the first storage space S1 and the second storage space S2. Items can be easily stored in the first storage space S1 through the first opening 52p.

[0076] The cover member 56 comprises a first cover member 57 that covers the first accommodation space S1 from one side in the second direction D2, and a second cover member 58 that covers the second accommodation space S2 from one side in the second direction D2. The partition member 64 has a cover partition portion 642 that is sandwiched between the first cover member 57 and the second cover member 58. In this configuration, the cover partition portion 642 of the partition member 64 is sandwiched between the first cover member 57 that covers the first storage space S1 and the second cover member 58 that covers the second storage space S2. Therefore, although the first cover member 57 can be easily removed from the first side in the first direction D1, the movement of the second cover member 58 toward the first side in the first direction D1 is restrained by the partition member 64, making it difficult to remove the second cover member 58. Thus, the second storage space S2 can be made more difficult to access from the outside compared to the first storage space S1.

[0077] The antenna device 5 further includes a detection unit 72 that detects signals received by the antenna 70, and the antenna 70 and the detection unit 72 are housed in a second housing space S2. With this configuration, by housing the antenna 70 and detection unit 72 in a second containment space S2 that is difficult to access from the outside, it is possible to prevent anyone other than the administrator of the antenna device 5 from touching the antenna 70 or detection unit 72.

[0078] The antenna device 5 is housed in the first housing space S1 and further includes a speaker 75 that outputs information indicating that a signal has been detected by the detection unit 72. With this configuration, by housing the speaker 75 in the first housing space S1, which is easily accessible from the outside, it is possible to easily access the speaker 75 when adjusting its volume, etc.

[0079] The antenna device 5 is further configured to include an openable / closable cover 80 that is detachably provided in the first opening 52p and can close the first accommodation space S1 from the first side in the first direction D1. With this configuration, the opening and closing lid 80 closes the first storage space S1, thereby preventing unintentional access from the outside to the items stored in the first storage space S1.

[0080] The main body 53 is configured to be positioned with the first opening 52p facing upwards and the first direction D1 aligned with the vertical direction. With this configuration, by aligning the main body 53 vertically, the antenna device 5 can be installed, for example, upright on the floor surface F. This minimizes the reduction in indoor space caused by installing the antenna device 5, allowing for more effective use of the indoor space.

[0081] The cover member 56 is formed in a flat plate shape that extends along a plane intersecting the second direction D2. With this configuration, since the cover member 56 is formed in a flat plate shape, the cover member 56 can be easily manufactured with a simple structure.

[0082] The main body 53 is made of a material that has higher rigidity than the cover member 56. With this configuration, the main body 53 can firmly hold the cover member 56 held by the cover holding part 60, thereby suppressing deformation of the cover member 56.

[0083] The main body 53 is made of a material that is impermeable to radio waves. In this configuration, since the main body 53 is made of a material that is opaque to radio waves, the radio waves to the antenna 70 pass through the cover member 56, which is made of a material that is transparent to radio waves. This makes it possible to give the antenna device 5 directionality.

[0084] The main body 53 is made of metal. With this configuration, since the main body 53 is made of metal, the main body 53 can be made to have higher rigidity than the cover member 56 and to be radio wave impermeable, at low cost and with ease.

[0085] (Other embodiments) While preferred embodiments of the present invention have been described above, the present invention is not limited to these embodiments. Additions, omissions, substitutions, and other modifications are possible without departing from the spirit of the invention. The present invention is not limited by the above description, but only by the appended claims. For example, in the embodiment described above, the opening K is formed in the main body 53 along the entire length in the first direction D1, but it is not limited to this. The opening K may be provided only in a part of the main body 53 in the first direction D1. Specifically, the opening K may be provided only in the main body 53 at a position that overlaps with the antenna 70, the detection unit 72, and the speaker 75 when viewed from the second direction D2.

[0086] In the embodiment described above, the inner member 54 and the outer member 55 are rectangular when viewed from above, but are not limited to this. The inner member 54 and the outer member 55 may be circular, elliptical, oblong, or polygonal in any other shape when viewed from above.

[0087] In the embodiment described above, the main body 53 is composed of an inner member 54 and an outer member 55, but it is not limited to this. For example, a pair of extending portions 542A and 542B, or only a second plate-like portion 541, may be provided on the inside of the outer member 55.

[0088] In the embodiment described above, the first cover member 57 and the second cover member 58 of the cover member 56 are inserted into a pair of cover retaining grooves 61A and 61B which serve as the cover retaining portion 60, but the embodiment is not limited to this. As long as the cover member 56 can be inserted into and removed from the main body portion 53 in the first direction D1, the cover retaining portion 60 may be configured to hold the cover member 56 by, for example, a locking portion such as a hook or a magnet provided on the main body portion 53.

[0089] In the embodiment described above, the main body 53 is configured to be radio wave impermeable, but it is not limited to this. The main body 53 may be made of resin, wood, or the like to have a radio wave transparent configuration.

[0090] In the embodiment described above, the antenna device 5 is equipped with a detection unit 72 and a speaker 75, but the detection unit 72 and speaker 75 may be located outside the antenna device 5.

[0091] In the embodiment described above, the cover member 56 is provided with a first cover member 57 and a second cover member 58. However, for example, the first cover member 57 may be detachable for adjusting the volume of the speaker 75, while the second cover member 58 may be provided in a way that prevents it from being detached from the main body 53.

[0092] In the embodiment described above, both the first cover member 57 and the second cover member 58, which constitute the cover member 56, are made of a material that is transparent to radio waves. However, the first cover member 57 that covers the speaker 75 may be made of a material that is not transparent to radio waves, such as metal.

[0093] In the embodiment described above, the antenna device 5 is placed on the floor surface F near the entrance 101, but it is not limited to this. The antenna device 5 may also be attached to a bracket or the like, which is fixed with screws to a wall or ceiling near the entrance 101. In such a case, the antenna device 5 may be positioned so that the first direction D1 is aligned with the horizontal direction.

[0094] Furthermore, in the embodiment described above, the controlled area R is set up within a single office 100, but it is not limited to this. The controlled area R may be set up in multiple offices 100 that are in communication with each other, or in multiple offices 100 and a corridor (not shown). Moreover, the controlled area R may be set up across multiple floors. The antenna device 5 is installed near each of the entrances 101 provided in such a controlled area R. For example, if one controlled area R is composed of multiple offices 100 that are in communication with each other, the antenna device 5 is not installed at the connection ports that connect the offices that make up one controlled area R, but is installed only near the entrances 101 of the controlled area R itself.

[0095] In the embodiment described above, the antenna device 5 is installed in a portion of the vicinity of the entrance / exit 101 that is located within the controlled area R. However, the configuration is not limited to this. The antenna device 5 may also be installed in a portion of the vicinity of the entrance / exit 101 that is located outside the controlled area R.

[0096] In the embodiment described above, the antenna device 5 outputs an alarm sound, for example, as information indicating that a signal has been received when it detects a signal from the wireless communication unit, but it is not limited to this. As information indicating that a signal has been received from the wireless communication unit, for example, a lamp may be turned on, a message may be displayed on a display, or a notification may be sent to the management center that manages the management area R.

[0097] In the embodiment described above, the antenna device 5 is provided, for example, in the power supply system 1. The configuration of the power supply system 1 illustrated in the above embodiment can be modified as appropriate. Furthermore, the antenna device 5 can be used for purposes other than the power supply system 1. The antenna of the antenna device 5 may not only receive radio waves from the wireless communication unit but also transmit radio waves. The antenna device 5 may be used, for example, as a router that constitutes a wireless communication network within the office 100. Furthermore, without departing from the spirit of the present invention, the components in the embodiments described above can be replaced with well-known components as appropriate, and the modifications described above can be combined as appropriate. [Explanation of symbols]

[0098] 5…Antenna device 52p…first opening 53...Main body 53f…first outer surface 54…Inner components 54b…Equipment fixing part 541...Second plate-like part 542A, 542B...extension part 543A, 543B... Second connection section 55...Outer member 551...First plate-like part 552A, 552B...Opening edge 553A, 553B... First connection section 56... Cover component 57…First cover component 57s...Cover end 57t...Cover end 58...Second cover component 58s...Cover end 58t...Cover end 60...Cover retaining part 61A, 61B... Cover retaining groove 64... Partition member 642... Cover section 70… Antenna 72...Detection unit 75...Speaker 80...Opening / Closing Lid K...Opening S... Containment space S1...First containment space S2...Second containment space

Claims

1. A main body having an opening that extends in a first direction and opens to one side of a second direction that intersects the first direction in at least a portion of the first direction, and having a housing space capable of accommodating an antenna, It includes a cover member that covers the opening and is made of a material that can transmit radio waves, The main body portion includes a cover holding portion that allows the cover member to be inserted into and removed from the main body portion in the first direction, thereby detachably holding the cover member to the main body portion. Antenna device.

2. The cover retaining portion is formed on both sides of the main body portion in a third direction that intersects the second direction when viewed from the first direction with respect to the opening, and has a pair of cover retaining grooves extending in the first direction. The cover member is such that its cover ends, located on both sides in the third direction, are inserted into a pair of cover retaining grooves, thereby allowing it to be inserted into and removed from the main body in the first direction. The antenna device according to claim 1.

3. The main body is, An inner member having an equipment fixing portion capable of fixing the aforementioned antenna, It surrounds the periphery of the inner member and forms the outer surface of the main body, and has the opening. It comprises an outer member and The antenna device according to claim 2.

4. The outer member has a pair of opening edge portions extending in the first direction on both sides of the opening in the third direction, The inner member is provided at a distance from each of the pair of open edge portions on the other side in the second direction, and has a pair of extending portions that extend in the first direction. The pair of cover retaining grooves are formed between the corresponding open edge portion and the pair of extended portions. The antenna device according to claim 3.

5. The outer member has a pair of opening edge portions extending in the first direction on both sides of the opening in the third direction, and a first plate-like portion that forms a first outer surface facing the other side of the outer surface in the second direction, at a position spaced apart from the pair of opening edge portions on the other side of the second direction. The inner member has a pair of extending portions that extend in the first direction, spaced apart from each of the pair of opening edge portions on the other side in the second direction, and has a second plate-like portion having the equipment fixing portion, spaced apart from the pair of extending portions on the other side in the second direction and spaced apart from the first plate-like portion on one side in the second direction. The antenna device according to claim 3.

6. The outer member is, It has a pair of first connecting parts that connect each of the pair of open edge portions and each of the ends of the first plate-like portion in the third direction, The inner member is, It has a pair of second connecting parts that connect each of the pair of the extended parts and each of the ends of the second plate-shaped part in the third direction, Each of the pair of second connecting parts is joined to each of the pair of first connecting parts. The antenna device according to claim 5.

7. The opening is formed along the entire length of the main body in the first direction. The antenna device according to claim 1 or 2.

8. The main body includes a partitioning member that divides the storage space into a first storage space on the first side in the first direction and a second storage space on the second side in the first direction. The first accommodation space has a first opening that opens to the first side in the first direction. The antenna device according to claim 1 or 2.

9. The cover member is A first cover member covers the first accommodation space from one side in the second direction, The second storage space is provided with a second cover member that covers it from one side in the second direction, The partition member has a cover partition portion that is sandwiched between the first cover member and the second cover member. The antenna device according to claim 8.

10. The system further comprises a detection unit that detects the signal received by the aforementioned antenna, The antenna and the detection unit are housed in the second housing space. The antenna device according to claim 9.

11. The first containment space further includes a speaker that is housed there and outputs information indicating that the detection unit has detected the signal. The antenna device according to claim 10.

12. The first opening is further provided with an opening / closing lid that can be detachably attached to the first opening and can close the first storage space from the first side in the first direction. The antenna device according to claim 8.

13. The main body is positioned with the first opening facing upwards and the first direction aligned vertically. The antenna device according to claim 12.

14. The cover member is formed in a flat plate shape that extends along the plane intersecting the second direction. The antenna device according to claim 1 or 2.

15. The main body is formed of a material having higher rigidity than the cover member. The antenna device according to claim 1 or 2.

16. The main body is formed of a material that is impermeable to radio waves. The antenna device according to claim 14.

17. The main body is made of metal. The antenna device according to claim 15.

Images