Antenna device

Abstract

To provide a neat antenna device in which a rectangular cubic antenna attached to a wall surface or the like is used, and wiring cables or the like of electronic apparatuses are not visible even when the electronic apparatuses are attached to the back surface of the antenna.SOLUTION: An antenna fixing portion 3 which is integrally molded with a resin case 1 on a side opposite to a receiving sensitivity direction and fixes an antenna 2 can be freely attached to a wall surface mounting metal fitting 5 which is mounted on a wall surface 8 in advance, and an electronic apparatus 22 which is connected to a wiring cable 26 from an output terminal 21 on a back surface 20 of the antenna 2 is attached to a back surface 20 of the antenna, and a decorative cover 4 which covers the electronic apparatus 22 and wiring cables 26, 27, 28 which can be freely connected to the electronic apparatus 22 is detachably provided on the back surface 20 of the antenna 2.SELECTED DRAWING: Figure 1

Description

[Technical field]

[0001] The present invention relates to an antenna device that houses a reflecting element and a feeding element inside a resin case, and more specifically, to a technical field of an antenna device that receives terrestrial digital broadcasting and that can be attached to a wall or pole of a house to make the wiring cable on the back of the antenna device invisible. [Background technology]

[0002] In recent years, antennas for receiving terrestrial digital broadcasts have shifted from the so-called "Yagi antennas" with exposed antenna elements to "designer antennas" with antenna elements covered in resin for a more stylish look. As an example of a technology for mounting these antennas on a mast, Patent Document 1 listed below discloses an antenna device having a cover part 31 that covers the fixing brackets 35, 351, 352, 400 and the output connectors 25, 250 of the antenna devices 10, 100, as shown in Figure 2, etc. That is, the invention of claim 1 in the same document 1 is an antenna device 10, etc., which is used by being fixed to a mast 70, etc., and includes a pillar-shaped antenna main body 20, etc., and a connection part 30, etc., attached to the bottom surface of the main body 20, etc., which is the bottom surface of the main body 20, etc., and the connection part 30, etc. has a pillar-shaped cover part 31 having a space formed therein and a mast insertion port formed on the bottom surface for inserting the mast 70, etc., and at least one fixing metal fitting 35, etc., installed inside the cover part 31 and configured to fix the mast 70, etc., and the antenna main body 20, etc. of the invention of claim 3 is configured to extend from the bottom surface 22 of the main body into the inside of the cover part 31. The connection portion 30 etc. of the invention of claim 5 has a small chamber portion 40 inside the cover portion 31 which surrounds the output connector 25 etc. protruding from the bottom surface 22 of the main body etc. and is configured to separate the space around the output connector 25 etc. from the space inside the cover portion 31, and each of the cover members 31 has a partition member 40a etc. which forms the small chamber portion 40 when the cover member 31 is closed, and the partition member 40a is formed with a cable insertion port 33 etc. for inserting a cable 80 connected to the output connector 25 etc. into the inside of the small chamber portion 40. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] JP 2018-46505 A Summary of the Invention [Problem to be solved by the invention]

[0004] In the structure of the antenna device of Patent Document 1, when installing the antenna 20, etc., the metal fittings 35 for fixing the antenna 20, etc. to the mast 70, etc., and the connector 25 for connecting to the antenna 20, etc., are covered with the cover portion 31, but the cable 80 connected to the amplifier and other devices connected immediately thereafter is exposed and looks unattractive, and there is also the inconvenience that the antenna 20, etc. cannot be attached to a wall surface, and these points are considered to be issues that need to be resolved.

[0005] To provide an antenna device for a cube-shaped antenna to be attached to a wall surface or the like, which has a neat appearance even when the angle between the axis perpendicular to the wall surface and the central axis of the antenna's reception sensitivity becomes large, and even when electronic devices such as amplifiers are attached to the back surface of the antenna, the cables wired to those devices are not visible. [Means for solving the problem]

[0006] As a means for solving the problem, the invention described in claim 1 provides an antenna 2 device in which an antenna element is disposed in a resin case 1, An antenna fixing portion 3 which is integrally molded with the resin case 1 on the side opposite to the receiving sensitivity direction and which fixes the antenna 2 is freely attachable to a wall mounting bracket 5 which is attached to a wall surface 8 in advance. and an electronic device 22 connected to a wiring cable 26 extending from an output terminal 21 on the rear surface 20 of the antenna 2 is attached to the rear surface 20 of the antenna, and a decorative cover 4 covering the electronic device 22 and the wiring cables 26, 27, 28 connectable to the electronic device 22 is detachably provided on the rear surface 20 of the antenna 2. The antenna device is characterized by the above.

[0007] The invention described in claim 2 is an antenna 2 device in which an antenna element is disposed in a resin case 1, An antenna fixing portion 3 which is integrally molded with the resin case 1 on the side opposite to the receiving sensitivity direction and which fixes the antenna 2 is freely attachable to a wall mounting bracket 5 which is clamped by a pole mounting bracket 6 to a pole 7; and an electronic device 22 connected to a wiring cable 26 extending from an output terminal 21 on the rear surface 20 of the antenna 2 is attached to the rear surface 20 of the antenna, and a decorative cover 4 covering the electronic device 22 and the wiring cables 26, 27, 28 connectable to the electronic device 22 is detachably provided on the rear surface 20 of the antenna 2. The antenna device is characterized by the above.

[0008] The invention described in claim 3 is characterized in that the resin case 1 of the antenna 2 is formed in a cube shape, and the decorative cover 4 is a lid body having a size that can cover the back surface 20 of the antenna 2 except for the antenna fixing portion 3. The antenna fixing portion 3 protruding from the lower portion of the decorative cover 4 is fastened and fixed by a bolt 53 and a nut 54 attached to the wall mounting bracket 5. The antenna device according to claim 1 or 2 is characterized in that:

[0009] The invention described in claim 4 is such that, on the back surface 20 of the antenna 2, a locking piece 23 is provided on the upper part, and screw fixing pieces 24 with screw holes 25 are provided on both ends of the lower part, A hole 41a for fixing a screw is drilled in a side surface 41 of the decorative cover 4 at a position corresponding to the screw fixing piece 24, The upper surface 42 of the decorative cover 4 is configured to be freely fixed to the screw fixing piece 24 by a fixing screw 43 inserted into the screw fixing hole 41 a in a state where the upper surface 42 of the decorative cover 4 is engaged with the engaged piece 23. The antenna device according to claim 1 or 2 is characterized in that: Effect of the Invention

[0010] According to the antenna device of the present invention, when the antenna is installed on a wall surface and adjusted to the direction of radio wave arrival so that the antenna's receiving sensitivity is maximized, even if the angle is large relative to a plane perpendicular to the wall surface, by using a decorative cover, electronic devices such as amplifiers attached to the back of the antenna and the wiring cables for them can be prevented from being completely visible, contributing to improving the aesthetic appearance. [Brief description of the drawings]

[0011] [Figure 1] 1 is a perspective view showing the rear surface of an antenna device with a decorative cover attached thereto when mounted on a wall surface; FIG. [Diagram 2]1 is a perspective view showing the antenna device (rear side) immediately before the decorative cover is attached. FIG. [Diagram 3] 1 is a perspective view showing an antenna device with a decorative cover attached; [Figure 4] 13 is a perspective view showing a state in which the upper surface of the decorative cover is engaged with the engaging piece of the antenna. FIG. [Diagram 5] 1 is a perspective view showing the rear side of an antenna device with a decorative cover attached to a pole; FIG. [Figure 6] FIG. 6 is a front perspective view of FIG. 5. [Figure 7] FIG. 1 shows how to attach the decorative cover to the rear surface of the antenna; FIG. 2A is a partially enlarged cross-sectional view of the upper part seen from the side, and FIG. 2B is a partially enlarged cross-sectional view of the lower part seen from below. BEST MODE FOR CARRYING OUT THEINVENTION

[0012] DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Preferred embodiments of an antenna device according to the present invention will now be described with reference to the drawings.

[0013] <First Example> To summarize the antenna device of the first embodiment of the present invention, as shown in Figure 2, this antenna device is a terrestrial digital broadcasting receiving antenna 2 in which antenna elements (such as a reflecting element and a feeding element) are arranged inside a resin case 1 formed in a cubic shape. An antenna fixing part 3 for fixing the antenna 2, which is molded integrally with the resin case 1 on the side opposite to the reception sensitivity direction, is temporarily fixed to a wall mounting bracket 5 that is attached in advance to a wall 8, and is then tightened and fixed with bolts 53 and nuts 54 attached to the wall mounting bracket 5. An electronic device 22 such as an amplifier or mixer, which is connected to a wiring cable 26 from an output terminal 21 on the rear surface 20 of the antenna 2, is attached to the rear surface 20 of the antenna, and cables 27, 28 wired to the electronic device 22 are freely connectable. A decorative cover 4 covering the electronic device 22 and the wiring cables 26, 27, 28 is provided on the rear surface 20 of the antenna 2 so as to be freely attached and detached.

[0014] 1, the wall mounting bracket 5 is formed of a vertical surface portion 51 that is attached to a wall surface 8, and horizontal surface portions 52 that are bent vertically above and below the vertical surface portion 51. A through hole 52a is formed at the tip of each of the upper and lower horizontal surface portions 52, through which a bolt 53 can be passed. The space between the bolt 53 and the vertical surface portion 51 provides a space in which the antenna fixing part 3 can rotate. In addition, when the antenna fixing part 3 is attached and temporarily fixed (temporarily secured), the center of the horizontal surface part 52 is punched out to form an elastic punched part 52b so that the antenna fixing part 3 can smoothly enter the wall mounting bracket 5 (see Figure 1).

[0015] 1 to 3, an antenna fixing part 3 is integrally formed at the lower part of the back surface 20 of this vertically long antenna 2. This antenna fixing part 3 has three vertical bolt insertion grooves 31, open toward the back surface, formed at the left, right and center at the axial center portion about which the antenna 2 rotates. Therefore, even if one bolt insertion groove 31 for fixing to the wall surface 8 is used, the remaining two are free, and it is possible to push the wiring cable 27 from the BS antenna into the remaining bolt insertion groove 31 and to push the wiring cable 28 for home community reception into the other bolt insertion groove 31. A U-shaped engaging piece 23 is provided on both ends of the upper part of the antenna back surface 20, and a screw fixing piece 24 is provided on both ends of the lower part of the antenna back surface 20 at a position where it is inscribed and matches with the screw fixing hole 41a of the decorative cover 4 described later.

[0016] As shown in Figures 1 to 4, this antenna device has a decorative cover 4 that covers a wiring cable 26 from an output terminal 21 on the back surface 20 of the antenna 2 and wiring cables (coaxial cables) 27, 28 from an electronic device 22, and is removably provided on the back surface 20 of the antenna. The decorative cover 4 of this embodiment has no front or bottom surface, and is made up of four surfaces: a back surface 40, side surfaces 41, 41 on both sides, and a top surface 42, and is configured as a lid large enough to cover and fit the back surface 20 of the antenna 2 (cubic resin case 1) excluding the above-mentioned antenna fixing portion 3. Therefore, the antenna fixing portion 3 protruding from the bottom of the decorative cover 4 can be freely fastened and fixed with a bolt 53 and a nut 54 attached to the wall mounting bracket 5. Further, on each side surface 41 below the decorative cover 4, screw fixing holes 41a are drilled at positions corresponding to the screw fixing pieces 24 provided on the antenna back surface 20 (see Figs. 3 and 4).

[0017] Therefore, after the claw portion 44 on the upper surface 42 of the decorative cover 4 is engaged with the engaged piece 23 of the antenna 2 (FIGS. 4 and 7A), the claw portion 44 on the lower side surface 41 of the decorative cover 4 is pressed against a recess (reference numeral omitted) near the screw fixing piece 24 on the antenna back surface 20, whereby the decorative cover 4 can be easily secured in place by utilizing the elasticity of the claw portion 44 (see FIG. 7B). Then, the fixing screw 43 is inserted through the correspondingly positioned screw fixing hole 41a, allowing the decorative cover 4 to be easily and reliably secured to the screw hole 25 of the screw fixing piece 24 (FIGS. 1 to 3). Meanwhile, since the widths of the wedge-shaped locking piece 45 and the wedge-shaped locking piece 29 are each 10 mm, the decorative cover 4 can be easily removed from the antenna 2 (resin case 1) by simply loosening and removing the fixing screw 43 and slightly sliding the decorative cover 4 upward (FIG. 7B). Note that the width of the wedge-shaped locking piece 29 is indicated by the symbol W in FIG. 4.

[0018] Thus, by attaching such a decorative cover 4 to the antenna back surface 20, the electronic device 22 installed on the antenna back surface 20 and the wired cables 26, 27, 28 are almost invisible, improving the appearance of the antenna 2 installed on the house wall surface 8. Also, when a strong wind blows, it is possible to prevent the wiring cables 26, 27, 28 from fluttering in the wind and striking the antenna 2, which would cause noise (Fig. 1).

[0019] <Second Example> The antenna device with the above-mentioned detachable decorative cover can also be mounted on a pole 7 via a wall mounting bracket 5, as shown in Figures 5 and 6. This second embodiment has almost the same configuration as the above-mentioned first embodiment, so a duplicated explanation will be omitted. The difference is that the wall mounting bracket 5, which is attached to a wall surface 8, is fixed to the pole 7 by a bolt 60 so as to sandwich the pole 7 with the pole mounting bracket 6 (FIG. 5). When installing an antenna 2 on such a pole 7, if the decorative cover 4 described above is used, for example when the rotation angle of the receiving direction of the antenna 2 is adjusted to the left and right to the direction in which radio waves arrive, it is possible to prevent the wiring cables 26, 27, 28 to the electronic device 22 attached to the back surface 20 of the antenna from being completely visible, thereby safely achieving a better aesthetic appearance.

[0020] Although the embodiments have been described above based on the drawings, it should be noted that the present invention is not limited to the illustrated examples, and includes the range of design modifications and application variations that would normally be made by a person skilled in the art, provided that the scope does not deviate from the technical concept of the present invention. [Explanation of symbols]

[0021] 1 Resin case 2 Antennas 20 Antenna back 21 Antenna output terminal 22 Electronic equipment 23 Locked piece 24 Screw fixing piece 25 Screw hole 26 Wiring cable 27 Wiring cable 28 Wiring cable 29 Wedge-shaped locking piece 3 Antenna fixing part 31 Bolt insertion groove 4. Makeup cover 40 Back side 41 Side 41a Screw fixing hole 42 Top surface 43 Fixing screw 44 Claw part 45 Wedge-shaped locking piece 5 Wall Mounting Bracket 51 Vertical section 52 Horizontal part 52a through hole 52b Punching section 53 Volts 54 Nut 6 Pole mounting bracket 7. Paul 8. Wall

Claims

1. In an antenna device in which an antenna element is disposed in a resin case, An antenna fixing portion that is integrally molded with the resin case on the opposite side to the receiving sensitivity direction and that fixes the antenna is freely attachable to a wall mounting bracket that is attached to a wall in advance. and an electronic device connected to a wiring cable extending from an output terminal on the rear surface of the antenna is attached to the rear surface of the antenna, and a decorative cover for covering the electronic device and the wiring cable connectable to the electronic device is detachably provided on the rear surface of the antenna. An antenna device comprising:

2. In an antenna device in which an antenna element is disposed in a resin case, An antenna fixing portion that is molded integrally with the resin case on the opposite side to the receiving sensitivity direction and fixes the antenna is freely attachable to a wall mounting bracket that is clamped by a pole mounting bracket on a pole; and an electronic device connected to a wiring cable extending from an output terminal on the rear surface of the antenna is attached to the rear surface of the antenna, and a decorative cover for covering the electronic device and the wiring cable connectable to the electronic device is detachably provided on the rear surface of the antenna. An antenna device comprising:

3. The resin case of the antenna is formed in a cube shape, and the decorative cover is a lid body having a size that covers the back surface of the antenna excluding the antenna fixing portion, The antenna fixing portion protruding from the lower portion of the decorative cover is fastened and fixed by a bolt and a nut attached to the wall mounting bracket.

3. The antenna device according to claim 1 or 2,

4. A locking piece is provided on the upper part of the back surface of the antenna, and screw fixing pieces with screw holes are provided on both ends of the lower part. and a screw fixing hole is drilled in a side surface of the decorative cover at a position corresponding to the screw fixing piece, The upper surface of the decorative cover is configured to be freely fixed to the screw fixing piece by a fixing screw inserted into the screw fixing hole in a state where the upper surface of the decorative cover is engaged with the engaged piece.

3. The antenna device according to claim 1 or 2,

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