JPS58130604A - Antenna device - Google Patents

Abstract

PURPOSE:To obtain an antenna device of a simple structure which can be installed easily in an ordinary household with a facilitated control of directivity, by giving an inclination to a reflector of a coupling device or a surface abutting to a setting device to the center axis line and varying the direction of the reflector and the setting position of a radiator by changing the relative position between the coupling device and the setting device. CONSTITUTION:A radiator 14 has an offset type constitution and is set with a deviation to the center axis line of a reflector 11. A coupling device 13 contains a cylindrical main body part 16 having a bottom and a flange part 17. The surfaces at both ends of the part 16 have an inclination to each other centering on the axis line. Both device 13 and reflector 11 abut to the part 17 and the back side of the reflector and are fixed in a body. As a result, it is possible to vary freely the setting angle of the reflector 11 or the setting position of the radiator 14 by means of the surface inclined to the axis line of the device 13 or a setting device 12 which is due to a change of the coupled and fixed position between the reflector 11 and the device 13 or between the devices 12 and 13.

Description

[Detailed Description of the Invention] [Technical Field of the Invention] The present invention is applicable to the presently commonly used VHF or
In addition to television broadcasting using the UHF band, 8HF (Super
It is planned to broadcast television using the SHF frequency band, but it is impossible to receive these SHF broadcast waves with current television receiving antennas such as Yagi antennas and loop antennas. Therefore, a parabolic antenna is used in place of the current antenna.The present invention makes it possible to easily set the directivity of such a parabolic antenna. The present invention relates to an antenna device that can be changed.

[Technical background of the invention]

Conventional television broadcasting uses the VHF and UHF bands, and UHF broadcasting is mainly carried out by local broadcasting stations with narrow service areas, while VHF broadcasting uses wide service areas. We are conducting targeted broadcasts. Recently, with the appearance of skyscrapers, etc., the number of areas where viewing is difficult has increased, and communal listening systems have been put into practical use as a means of solving this problem.However, although it seems to be effective especially in densely populated areas where there are many users, If the viewing area is scattered over a wide area and the population density is low, it is difficult to absorb the large amount of equipment costs and it is also difficult to introduce a public listening system as a practical matter. In addition, reception interference such as ghosts caused by reflected waves from mountains and buildings has been occurring frequently recently, and no effective countermeasures have been taken to counter these ghosts.
Research and development efforts are underway to prevent reception disturbances such as ghosts by incorporating ghost removal circuits into TVs and receivers, but at present no reliable product is commercially available.

For these reasons, EIHF broadcasting has attracted attention and is currently being considered for practical use. This 8H? Broadcasting is a system that uses a geostationary satellite launched above the equator to emit TV broadcast waves from the ground toward the geostationary satellite, and then retransmits the TV broadcast waves sent from the ground using the geostationary satellite back to the ground. be. BH'1 used in this 8HIF broadcast? In the band, the frequency is more than 100 times that of the VHF band, and the wavelength is as short as 250 m, so transmission is within the transparent range similar to light. However, since it uses a stationary satellite, it is not affected by mountains, buildings, etc.
This eliminates reception interference such as ghosts and allows video of uniform quality to be transmitted over a wide range of national territory (regions), which also serves as a countermeasure against viewing difficulties. .

Naturally, after receiving such 5I (F broadcasting), the frequency band for corporate bonds is different in the current receiver, so it cannot be used as is, and it is not possible to use it in the receiver.
The first thing that needs to be taken is a receiving antenna for receiving broadcast waves. It is assumed that this receiving antenna uses a parabolic antenna, but the EiHF broadcast waves received by this parabolic antenna are
If necessary, the signal is further converted to UHF-VHyHF via an 8HF-UHF converter (hereinafter referred to as 8A converter) which converts the signal from the HF band to a UHF signal, and then supplied to a general receiver. There is a strong possibility that this S/U converter will be directly attached to a parabolic antenna and installed outdoors. By converting these converters into adapters, television receivers currently in use can receive and reproduce 8) 11F broadcasts without making any changes. It is conceivable that a parabolic antenna for receiving this 8HF broadcast signal be installed on the roof or in the garden of a general household, and the signal transmitted from there to the receiver side using a cable. This friend parabolic antenna needs to be as small as possible, but it also needs to be easy to install, lightweight, and because it is installed over a very wide area, the angle adjustment (directivity adjustment) of the parabolic antenna is difficult. People are asking for things that are easy to do. At present, parabolic antennas are not actually used in general households, so a simplified parabolic antenna device will have to be developed in the future.

By the way, if we look at general parabolic antennas, there are various structures that allow the antenna angle to be adjusted, such as one shown in Japanese Utility Model Publication No. 55-28004. Conventional example in this bulletin (see Figure 1 in the bulletin)
does not show a configuration in which the antenna is installed on a pedestal via a rotor and the pedestal is supported with a plurality of jacks with respect to a reference plane such as the ground. In this device, the angle of the antenna is adjusted by changing the installation angle of the pedestal by adjusting the individual jacks. This bulletin states that in such a device, the rigidity of the jack must be increased in order to support the total weight of the antenna and mount with the full jack, which results in a problem of increased weight and increased jack operating force. . The idea described in this bulletin as an improvement over these problems (see figures 2 and 3 of the bulletin) is that the pedestal is installed on a reference surface such as the ground, and a level adjustment mechanism is installed on this fixed pedestal. An antenna is shown installed through the antenna. According to this structure, a support is fixed to a frame, a cylinder fixed to an antenna is fitted into the support, and the cylinder and support are held together by a spherical body and a bearing. Therefore, the cylindrical body can freely rotate by a predetermined angle with respect to the column, and as a result, the antenna can freely rotate and move with respect to the mount. However, if left as is, the antenna would tilt in a certain direction due to the weight of the antenna, but in order to prevent this and set the angle freely, screw holes are provided in the cylinder at approximately 120 degree intervals, and screws are inserted into these holes. The tip of this screw is in contact with the column. Therefore, by individually adjusting the screws at three locations, the cylindrical body, ie, the antenna, is tilted relative to the fixed column, and the antenna can be identified. By fixing the screw, it is possible to maintain the antenna's tilt while keeping it fixed.

[Intermediate point of background technology]

However, in such an antenna device, a spherical body and a bearing are arranged between the cylinder and the support to adjust the tilt, so it may be effective for devices such as radar, but it is not effective for use in television receivers for general households. Antenna devices tend to have too complicated structures, and furthermore, it is difficult to adjust the angle over a wide range. In addition, in ordinary homes, antenna devices cannot necessarily be installed in flat places, but can be installed in a variety of places, such as in the garden, on a house, or on the roof, and conventionally known technology does not have much flexibility in its use, making it difficult to actually use it. There are many questionable aspects regarding this.1. .

[Purpose of the invention]

The present invention takes these points into consideration and provides an antenna device that is not only easy to install in a general household, but also allows easy adjustment of the angle of the reflector, has a simplified structure, and is not subject to any restrictions on installation location. [Summary of the Invention] The present invention provides an installation device w fixed to an installation surface, a connection device connected to this installation device, and a connection device attached to this connection device. This reflector has a radiator installed at a position offset from the center axis of the reflector. The other side is configured to be inclined with respect to its central axis, and by using this inclined surface to change the relative position with the pair coupling device, the direction and angle of the reflector or the radiator can be changed. The present invention relates to an antenna device in which the installation position of the antenna can be changed, and the antenna can be directed in a predetermined direction without being affected by the installation location.

[Embodiments of the invention]

Embodiments of the present invention will be described in detail below with reference to the drawings.

FIG. 1 shows the main features of the antenna device according to the present invention, in which the parabolic antenna's 7th rector (11) is located on the neck installation surface (Z
) and then to the installation device (12) via the connecting device +13). This reflector (11) has a spherical inner surface and is composed of a para-polis reflector (7), and is designed to receive the incoming 1M wave and focus it on a predetermined focal position. ing. A radiator (14) is placed at this focusing position, and the signal is transmitted to an 8/'[J converter (not shown) or the like via a cable (not shown). This radiator (14) is mechanically fixed by a support arm (15) whose one end is fixed to the reflector (11), and the reflector (14) is placed at a position offset from the center axis of the reflector (11). The spherical shape of 11) is set and configured into an offset shape. Kowahashi 7 Lecta (1
If the radiator (14) is placed on the center @ line of 1), a shadow part will be generated by the radiator (14)'s own material, resulting in a decrease in receiving sensitivity, so the radiator (14) is placed offset. The relationship between the above-described reflector (11) and the coupling device (13) will be explained in more detail with reference to FIG. 2. The state shown in FIG. 2 shows the state in which the coupling device (13) is attached to the reflector (11) as seen from the side opposite to the receiving surface of the reflector (11), that is, from the back side. As can be seen from this figure and FIG.
) is a bottomed cylindrical main body part (16), and this main body part (16)
The open end of the flange is integrally formed to expand outwards (
17), and a plurality of through holes (18) are bored at intervals in this flange (17). −Shiki Taibu (
A plurality of through holes (19) are bored at equal intervals on the bottom of the main body (16) like a shrine. ) are arranged at an angle to each other rather than at right angles to the axis of the And this connecting device (13), reflector (11), and connecting device (13)
The flange (17) is in contact with the back of the 7-rector (11),
Fixing devices such as screws and bolt nuts (20) are inserted through holes (18)
The two are fixed together by inserting and tightening them. For example, when using screws, the Chichi connection device (13)
Insert the screw from the flange (17) side of the reflector (11).
In addition, it can be fixed by being formed on a metal fitting etc. that is integrally identified with the 7 retata (11) and screwed into the next screw hole (not shown), and the same can be done when using bolts and nuts. In this case, the bolts may be placed in advance on the reflector (11) or the flange (17) in S stages. Various other fixing methods can be considered. In this way, the coupling device (13) and the 7-rector (11) are fixed, but without this fixing device (20), the coupling device (13) or the 7-rector (11) is fixed.
The position of the radiator (14) can be changed relatively by rotating one of the holes and shifting the position of the fixing hole, and also has the effect of reinforcing the coupling device (13) and the reflector (11). is also occurring. On the other hand, this coupling device (1
3) and the installation device (12). For example, the installation device (12) is formed into a cylinder with a bottom, the bottom part of this cylinder (21) is used as a mounting surface, and the mounting surface of the connecting device (13) is formed into a cylinder shape with a bottom. ) body part (16
), and have the same number of screw holes or bolts set at equal intervals in positions corresponding to the through holes (19) formed in the bottom of this main body (16). By configuring the installation device (12) in a similar manner, the screw holes, bolts, etc. of the installation device (12) match the through holes (19) of the connection device (13), and by tightening screws or nuts at the necessary points, it can be connected to the connection device (13). The installation device (12) is fixed.For example, if a screw hole is provided in the installation device (12), in the following case, it is inserted from inside the main body (16) of the connection device (13) through the through hole (19). By protruding a screw and engaging it with the screw hole of the installation device (12), it is possible to fix the two.
), the connecting device (1
By configuring 3), the fixing work can be performed freely regardless of whether the reflector (11) is fixed to the coupling device (13) or not. Alternatively, it is also possible to make the main body part (16) into a frame shape and form the installation surfaces (bottom surfaces) of the alligator part (17) on both sides of the frame body. Furthermore, even when bolts are used, the bolts may be installed from the installation device (12) side or from the connecting device (13) side, and the two can be connected to each other by tightening the nuts from the other side. be able to. Furthermore, the installation device (12) is not cylindrical with a bottom, but a bell is provided in the same way as the local part (17) of the connecting device (13), and the through hole (19) of the connecting device (13) is installed in this collar.
Corresponding screw holes, bolts, through holes, etc. may be provided. Figure 3 shows a case where the installation device (12) is not sloped, and the same parts as in Figures 1 and 2 are given the same reference numerals and detailed explanations are omitted. 13) and the installation device (12), for example, as shown in FIG. , this local area (23)
(24) A bolt (25) and an oak (26) may be used to fix the space between the bolts (25) and the oak (26), and in this case, it can be easily attached and detached from the outside. Various other fixing methods are possible. Furthermore, installation equipment (12
) is provided with a local part (27) on the installation surface (the part that comes into contact with the illusion), and by using this collar part (27) to configure it like a screw, large needle, or bolt, the reflector (11) and the connecting device can be connected. By changing the connection fixing position with (13) or changing the connection fixation position between the coupling device (13) and the installation device (12), the inclination from the axis of the connection device @ (13) or the installation device (12) can be changed. The set angle of the reflector (11) or the set position of the radiator (14) can be freely changed depending on the surface.For changes in these angle changes and set position changes, please refer to Figs. 5 to 9. explain.

The butterfly shown in Figure 5, for example, is a case where the radiator 14) is set to be located at the upper side of the figure.In this case, the installation device (14)
2) C) The angle between the moving center line of one plane and the installation surface (Z) is α, and the maximum angle with the moving center line is θ. Reflector (1
Let the angle between 1) and the central axis be β [shown in Figure 2],
In the case of FIG. 5, the angle between the central axis of the reflector (11) and the installation surface (Z) is indicated by mm. This angle B can be expressed as (g+#+φ-0). This -〇 Center axis of the 7-rector (11) When considering the center of the tube, it is set as 10 because it is on the lower side in the figure with respect to the center axis 0 From the state shown in Figure 5, the connecting device (13) The state shown in FIG. 6 is obtained by rotating only the reflector (11) and inverting the state shown in FIG. 5 by 180 degrees. In this case, the angle between the center axis of the reflector (11) and the installation surface (Z) changes from B to C. The angle between the installation surface (Z) and the axis of the incoming radio wave incident direction changes from B to C. This angle C can be expressed as α+β+φ10, and it can be seen that - is inverted with respect to the state shown in FIG. In other words, the incoming radio wave incident direction axis is 1i1KI above the center axis of the reflector (11), so
shows that the angle changes from -0 to 100, and from this result, it is possible to cause a change in the radio wave direction of up to 2# by rotating the reflector (11) with respect to the coupling device (13). Looking at the case where the coupling device (13) is rotated relative to the installation device (12), as shown in Fig. 7, the central axis of the coupling device (13) and the installation surface (Z) The angle can be expressed as α+φ. Here, if the angle between the central axis of the coupling device (13), the central axis of the device (13), and the axis of the incoming radio wave incident direction is -, then the angle C# between the installation surface (Z) and the axis of the incoming radio wave incident direction is - i In the case of Figure 6 and l Isao, α ten β + φ +
It can be expressed as 0. From this state, the coupling device (13
) to connect the coupling device (13) and the installation device (12).
) is reversed by 180 degrees and the next state is shown in FIG. 8. In this state of FIG. 8, the angles θ and D are as shown in FIG. 7, respectively. This angle Z can be expressed as α-β+θ+φ, and when compared with angle O, it can be seen that β changes from +l to −β. Therefore, the connecting device (13) is connected to the installation device (12).
), the axial direction can be changed by a maximum of 2β. Therefore, this β and the above-mentioned # are set in the range of 2β and 2#, respectively!II! As can be seen, it is possible to freely change the number and setting angle of the through holes (18) and (19) provided in the 1Ill adjustment movement minimum division connecting device (13) within this range. If the angle adjustment conditions of such a reflector (11) shown in FIGS. This figure 9 shows the angles β, θ, and φ centered on the angle α! i
#Adequate range indicates h necessary vJ4 adjustable range #'; 1. Within the range of this angle F, the 7-rector (11) can be adjusted freely. If you use an antenna device that can set the adjustment range in this way, for example,
As shown in Figure 0, even if the installation surface (Z) is changed, it is possible to set the center axis of the reflector (11) in the same direction. For example, if the installation surface is located in the vertical direction in the figure or in the horizontal direction,
1) Relative fixed position adjustment (angle adjustment) between the connecting device (13) and the connecting device @ (13) and the installation device (12)
By adjusting the fixed position (angle adjustment) relative to the antenna device, the antenna device can be freely set in a desired direction even if the installation surface changes.

In addition, in the above explanation, the reflector (11) and the coupling device (13)
Alternatively, use the through hole (18) to secure the installation device 1 (12).
(19), this through hole (1
8) By making (19) into a curved long hole shape drilled on the same circumference, the angle can be adjusted more freely from articulated rotation, making it easier to perform angular power installation. In addition, it is possible to make a smooth rotation sound. However, on the other hand, there is a possibility that the mechanical strength will decrease, so it may be necessary to use a reinforcing material or make the material thicker, but it is expected that it will be very convenient. It is also possible to use other fixing methods, and the angle display of the related position will make it easier to adjust the buttons.

In such a case, it is necessary to set either of 0 and β to 2φ or less, and in the case of θ\β, the adjustment range 1φ can be set smaller than the installation of a reflector.
If you select a direction that matches the latitude and longitude of the installation location, the horizontal and vertical directions should be such that the horizontal and vertical movement directions of the installation device match the changes in latitude and longitude. It is also possible, but in this case, the value of iφ needs to be much larger than in the above case. Furthermore, in the above explanation, a case was explained in which both the connecting device and the installation device were provided with predetermined inclination angles, but instead of giving the installation device a predetermined inclination angle, only both end faces of the connection device were provided with an inclination. Alternatively, it is possible to provide an inclination angle to the installation device so that there is no slope on the contact surface of the connecting device that comes into contact with this installation device. All matters within the reasonable range are included within the scope of the present invention.

〔Effect of the invention〕

As described above, according to the present invention, the angles α, β, θ
By selecting and setting φ and φ in a predetermined manner, the installation location of the antenna device and the installation method that matches the weather conditions such as rain and snow can be adopted, so the installation location of the antenna device is not limited and can be installed over a wide range. Because of this, the installation location can be set freely, and the installation work can be set in a state that is easy to perform, so it is possible to shorten the installation work time and improve workability, and the adjustment range of the installation device can be adjusted as required. It is possible to reduce the angle by 1/3 to 1/69 degrees, and it can be constructed with a simple structure.Moreover, it does not deteriorate in strength, so it has excellent wind pressure resistance. According to the present invention, it is possible to provide an antenna device that has the following characteristics.

[Brief explanation of the drawing]

FIG. 1 is a side view showing the antenna device tube according to the present invention, and FIG.
Figure 3 is a plan view of the antenna device and the connecting device as viewed from the installation device side, Figure 3 is a side view showing another example of the antenna device according to the present invention, and Figure 4 is the same antenna device. FIGS. 5 to 9 are side views showing another example of a method of fixing the connecting device and the installation device constituting the antenna device; and FIG. 10 is an explanatory diagram for explaining the angle adjustment range of the antenna device according to the present invention. 1 is a schematic diagram showing an installation example of an antenna device according to the present invention. 11...--...Reflector 12---Installation device 13...
・〜・・・−・−・・・・Connection device 14・・・・・・
−・・・・・・−・・・・Radiator 18.19・・・・
・-・Through hole 20・・・・・・・・− Fixing tool No. 1 Fig. 2 Fig. 3 Fig. 5 Fig. 6 Fig. 7
Figure 8 to Figure 9

Claims (1)

[Scope of Claims] (Li) An installation device that is fixedly arranged with respect to the installation surface, and a radiator that has a parabolic spherical surface that is attached to the installation device so that it can be rotated and fixed, and can be fixed. An antenna device characterized in that it is completely equipped with a reflector, and the angle of the reflector is adjusted by changing the relative position of the reflector to a member that abuts on the inclined surface of the co-coupling device. (2) The antenna device. The inclined part of the device is provided on the side of the part that contacts the reflector, and the rotation identification of the reflector and the coupling device is performed by a plurality of identification means arranged at equal intervals on the same circumference at each contact part. The antenna device according to claim 1. (3) The inclined portion of the coupling device is provided on the side of the part that abuts the installation device, and the rotation identification of the installation device and the coupling device is performed by providing the same circumference at the respective abutting portions. Claim 1, characterized in that the fixing is carried out by a plurality of fixing means arranged at close intervals above the fixing means.
Antenna device as described in section. (4) The antenna device f! according to claim 1, characterized in that both the end face of the inner abutting portion of the coupling device edge 7 receiver and the installation device are inclined with respect to the central axis. !
. (5) Claim 1, wherein the installation device is characterized in that the contact surface with the coupling device is inclined with respect to the central axis.
Antenna device as described in section. (6) In the coupling device, the end surfaces of the inner abutting portions of the reflector and the installation device are both inclined with respect to the central axis, and further, the contact surface of the installation device with the coupling device is inclined with respect to the central axis, The antenna device according to item 1 of the scope of Tokugi Haruyuki, characterized in that the angle of the reflector and the set position of the radiator are changed by changing the relative position of the reflector and the installation device connected to the connecting device. . (7) A special feature characterized in that the radiator edge 7 is configured in an offset type in which the radiator edge 7 is mounted offset from the center axis of the rector. The antenna device according to item 1 of the scope of Fi111 requirements.