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JP-2026075940-A - Antenna equipment

JP2026075940AJP 2026075940 AJP2026075940 AJP 2026075940AJP-2026075940-A

Abstract

[Problem] 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. [Selection Diagram] Figure 3

Inventors

  • 辻 研章
  • 花岡 栄三郎
  • 上田 洋士

Assignees

  • 株式会社オカムラ

Dates

Publication Date
20260511
Application Date
20241023

Claims (17)

  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 is an antenna device comprising 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.
  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 antenna device according to claim 1, wherein the cover member is insertable and removable from the main body in the first direction by inserting the cover ends located on both sides of the cover member in the third direction into a pair of cover retaining grooves.
  3. The main body is, An inner member having an equipment fixing portion capable of fixing the aforementioned antenna, The antenna device according to claim 2, further comprising an outer member that surrounds the periphery of the inner member, forms the outer surface of the main body, and has the opening.
  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 antenna device according to claim 3, wherein the pair of cover retaining grooves are formed between the corresponding open edge portion and the extended portion of the pair of open edge portions and the pair of extended portions.
  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 antenna device according to claim 3, wherein 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, and has a second plate-shaped 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-shaped portion on one side in the second direction.
  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, The antenna device according to claim 5, wherein each of the pair of second connection parts is joined to each of the pair of first connection parts.
  7. The antenna device according to claim 1 or 2, wherein the opening is formed along the entire length of the main body in the first direction.
  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 antenna device according to claim 1 or 2, wherein the first accommodation space has a first opening that opens to the first side in the first direction.
  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 antenna device according to claim 8, wherein the partitioning member has a cover partition portion sandwiched between the first cover member and the second cover member.
  10. The system further comprises a detection unit that detects the signal received by the aforementioned antenna, The antenna device according to claim 9, wherein the antenna and the detection unit are housed in the second housing space.
  11. The antenna device according to claim 10, further comprising a speaker housed in the first housing space and outputting information indicating that the detection unit has detected the signal.
  12. The antenna device according to claim 8, further comprising an opening/closing lid detachably provided in the first opening, which can close the first housing space from the first side in the first direction.
  13. The antenna device according to claim 12, wherein the main body is arranged with the first opening facing upward and the first direction aligned with the vertical direction.
  14. The antenna device according to claim 1 or 2, wherein the cover member is formed in the shape of a flat plate that extends along the plane intersecting the second direction.
  15. The antenna device according to claim 1 or 2, wherein the main body is formed of a material having higher rigidity than the cover member.
  16. The antenna device according to claim 14, wherein the main body is made of a material that is impermeable to radio waves.
  17. The antenna device according to claim 15, wherein the main body is made of metal.

Description

This invention relates to an antenna device. For example, security antenna devices may be installed at entrances to buildings or rooms within buildings for the purpose of preventing theft. Such antenna devices, upon receiving a signal from an item equipped with a wireless communication unit when a user attempts to remove it intentionally or unintentionally, will output information indicating that the signal has been received. For example, Patent Document 1 discloses a configuration that includes an antenna and a cylindrical cover that encloses the antenna, wherein a portion of the cover is made of metal that reflects radio waves, and the remaining portion of the cover is made of non-metallic material that allows radio waves to pass through. Japanese Patent Publication No. 2013-31067 This is a schematic diagram showing the overall configuration of a power supply system equipped with an antenna device according to an embodiment of the present invention.This is a perspective view showing the antenna device described above.This is a perspective view showing the antenna device with the cover removed.This is a perspective view showing the upper end of the main body of the antenna device described above.This is a view of the main body shown above, seen from above.This figure shows a part of the upper section of the main body, and is a cross-sectional view taken along the line VI-VI in Figure 5.This is a view of the upper part of the main body from a second direction.This is a cross-sectional view of the lower part of the antenna device, taken from a third direction. The following describes embodiments for implementing the antenna device according to the present invention, 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. 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-facing device 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. 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 from 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. 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 a 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. 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 equipped with a power storage device 2 and electrical equipment 200 available to users. In this embodiment, the user-accessible furniture 4 consists of multiple desks 4A and multiple tables 4B. Each desk 4A is primarily used by one user. Similarly, each table 4B may be used by one user, or it can be used by multiple users or for rest purposes. Users place the electrical equipment 200 they brought into the controlled area R, along with the energy storage device 2 provided within the controlled area R, onto the tableto