JP3136493B2 - Branch distributor for joint reception - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a splitter / distributor for joint reception used in a joint reception system using multi-cable transmission. A joint receiving system using multi-cable transmission is configured, for example, as shown in FIG. That is, FIG. 1 shows a shared reception system in an apartment house as an example of a shared reception system using multi-cable transmission. In FIG. 1, reference numeral 1 denotes a building; 2a, 2b,..., A number of dwelling units for joint reception; 3, a wiring duct; and 4, a wiring device box provided in the duct. Next, reference numeral 5 denotes a head end in the joint reception system, which is provided, for example, in the tower on the roof of the building 1. A transmission line 6 is provided in the duct 3. 7a, 7b ... is each dwelling unit 2a, 2b
The terminal provided in the terminal is, for example, a wall terminal.

Next, the head end 5 will be described. 11 is an antenna for receiving VHF television broadcasting, and 12 is U
An antenna for receiving HF television broadcasts, 13 is a mixer, 14 is an antenna for receiving a broadcast wave from one artificial satellite (for example, one called a broadcast satellite) for transmitting a broadcast signal. A converter 15 for frequency conversion is provided. Reference numeral 16 denotes a mixer. Reference numeral 17 denotes an antenna for receiving a broadcast wave from another artificial satellite (for example, a communication satellite) for transmitting a broadcast signal, which is provided with a converter 18 for frequency conversion. In the above-mentioned satellite, two different electric waves, for example, a vertically polarized electric wave and a horizontally polarized electric wave are transmitted in a state where their respective frequencies are mutually overlapped in order to use the frequency band efficiently. Accordingly, the antenna 17 has an output terminal 19 for outputting a vertically polarized radio wave reception signal corresponding to the two radio waves.
And an output terminal for outputting a horizontally polarized radio wave reception signal
There are 20. 21 indicates a mixer, and 22 and 23 indicate amplifiers, respectively. Next, the transmission path 6 will be described. Reference numerals 25 and 26 denote first and second trunk lines, respectively, and reference numerals 27 and 28 denote first and second branch lines, respectively. The first and second trunk lines are respectively used in a box 4 by using a branch distributor as described later. Connected to 25, 26. Terminals 7a, 7b,... Each have a first terminal 31 and a second terminal 32.
And first and second distribution lines 27 and 28 are connected to each of them.

In the head end 5, an antenna
The VHF and UHF broadcast signals received at 11 and 12 are mixed by a mixer 13. Output signal of mixer 13 and antenna
The broadcast signal received at 14 is mixed by a mixer 16. The output signal of the mixer 16 and the signal of the vertically polarized radio wave received by the antenna 17 are mixed by the mixer 21, amplified by the amplifier 22, sent out to the main line 25, and sent to the first terminal 31 of the terminal. Leads to. The received signal of the horizontally polarized radio wave received by the antenna 17 is amplified by the amplifier 23 and then sent out to the main line 26 to reach the second terminal 32 of the terminal. The signal sent to the main line 25 is as shown in FIG.
The signal sent to the main line 26 is as shown in FIG. As is clear from these (A) and (B),
Of the signals sent to 25 and 26, the BS-15 channel in the BS-IF transmission band and the 2,4,.
The frequency of the channel and the channel 1, 3,... Of the horizontal polarization side conversion channel of the satellite signal in the CS-IF transmission band overlap.

Next, the equipment provided in each dwelling unit 2a, 2b will be described. 33 is a well-known duplexer, 34 is a changeover switch, 35 is a CS-BS tuner, 36 is a television receiver,
37 denotes an antenna input terminal, and 38 denotes an AV terminal. In such a unit of a dwelling unit, the VHF and UHF broadcast signals of a large number of broadcast signals sent to the first terminal 31 of the terminal pass through the duplexer 33 and the antenna input terminal of the television receiver 36.
Given to 37. The received signal of the radio wave from the broadcasting satellite of the signal sent to the first terminal 31 and the received signal of the vertically polarized radio wave from the communication satellite are passed through the demultiplexer 33 to the changeover switch.
Given to 34. On the other hand, the received signal of the horizontally polarized radio wave from the communication satellite sent to the second terminal 32 is given to the changeover switch 34 as it is. These signals are selectively turned on by the changeover switch 34 manually operated by the resident of the dwelling unit.
It is provided to the S-BS tuner 35. Then, the broadcast signal selected by the tuner 35 is provided to the AV terminal 38 of the television receiver 36.

[0005]

2. Description of the Related Art A joint receiving branch / distributor used in a joint receiving system as described above receives a plurality of mutually different radio wave receiving signals from a plurality of input terminals as a set and receives a plurality of mutually different branching / distributing signals. Each of the plurality of output terminals is branched and distributed to a plurality of output terminals, and a plurality of signals destined for one set of the above-mentioned mutually different radio wave reception signals are individually transmitted. For example, FIG. As shown in B), the branching device 41f,
41f and distributors 56f, 56f are provided, and the former branch terminal and the latter input terminal are connected by connection cables 68f, 69f. 58f is a mounting portion in the branching device 41f and the distributor 56f.

[0006]

In the above case, for example, if the distance L between the two distributors 56f, 56f is large, each of the destinations (the terminal 7a) of the transmission lines connected to the output terminals 62f, 63f of them is required. Alternatively, two transmission lines 27 and 28 for each terminal 7b)
The distance L is made as small as possible so that the transmission lines for each destination are united together. However, in such a case, a large number of output terminals 62f, 63f, 62f, 63f are close to each other, and the connection of the transmission line to it must be performed in a state where different destinations intersect as shown in the figure, so that a connection mistake is made. There was a problem that it was easy to wake up, which was very troublesome in work.

The present invention has been made to solve the above-described problems (technical problems) of the prior art, and receives a plurality of mutually different radio wave reception signals as a set from a plurality of input terminals, and mutually differs. A branch for joint reception which branches and distributes to a plurality of output terminals through a plurality of branch distribution circuits, respectively, and separately transmits a plurality of sets of signals destined for one set of the above-mentioned mutually different radio wave reception signals. Even in the case of a distributor, a joint that can minimize the possibility of a connection error between a plurality of branch distribution circuits and a plurality of sets of output terminals that constitute a set of mutually different radio wave transmission signals. It is an object of the present invention to provide a receiving splitter / distributor.

[0008]

According to the present invention, the splitting / distributing splitter for co-reception according to the present invention converts received signals of mutually different radio waves into one.
A signal is received from a plurality of input terminals as a set, is branched and distributed to a plurality of output terminals through a plurality of mutually different branching and distribution circuits, and a signal destined for the above-mentioned mutually different radio wave reception signals is set to one set. In a splitter / distributor for joint reception designed to transmit a plurality of sets individually, a plurality of input terminals for receiving high-frequency reception signals of mutually different radio waves are provided in a set on the outer surface of one case. Arrange,
Further, on the outer surface of the one case, a plurality of sets of output terminals, each set having the same number as the number of the input terminals, are arranged separately for each set, while inside the case,
Along with positioning and installing the printed circuit board, the printed circuit board is provided with the same number of branch distribution circuits for individually branching and distributing received signals of mutually different radio waves in accordance with the number of the input terminals. The positions of the input terminals of the respective branch distribution circuits on the printed circuit board are determined in the vicinity of the corresponding input terminals, and the input terminals are individually connected to the input terminals of the respective circuits and mutually connected. It is possible to receive received signals of different radio waves, and furthermore, the plurality of branching and distribution circuits on the printed circuit board in the above-mentioned case are received signals of mutually different radio waves, but their frequencies are mutually overlapping. A plurality of high-frequency reception signals to be inputted are arranged so as to be separated from each other as much as possible, and the position of each output terminal in those circuits is divided into the above-mentioned sets and the position of the case is determined. For a plurality of sets of output terminals arranged on the surface, wiring is positioned so as to be determined near each corresponding output terminal, and each output terminal is individually provided at a corresponding output terminal in each circuit described above. , And a plurality of sets of signals destined for one set of the above-mentioned mutually different radio wave reception signals are individually transmitted.

[0009]

The signals individually input to the terminals of one set of input terminals are respectively branched and distributed by separate branch distribution circuits, and individually output from the terminals of the plural sets of output terminals. . Since the connection of the transmission line to the input terminal and the output terminal is divided for each group, each connection on the input side or the output side is in one state.

[0010]

BRIEF DESCRIPTION OF THE DRAWINGS FIG. FIG. 3A shows an internal state of the wiring device box 4 in FIG. In FIG. 1, reference numeral 41 denotes a splitter shown as an example of a splitter / distributor for joint reception.
Reference numeral 42 denotes a case in the branching device, which is attached to the box 4 at an attachment portion 43 provided integrally. 45 and 46 are a pair of input terminals for high frequency signal input, 48 and 49 are a pair of output terminals for high frequency signal output, and 51 and 52 are another pair of output terminals for high frequency signal output, respectively. This is called a branch output terminal. These are all attached to the case 42 in a state of being divided into groups as shown in the figure. As is well known, both the input terminal and the output terminal are configured by pairing a signal terminal and a ground terminal. As shown in FIG. 4, the same number of branch distribution circuits as the number of the input terminals, in this example, branch circuits 53 and 54 are accommodated in the case 42. These circuits 53 and 54 have the same function, 53a and 54a are input terminals, 53b and 54b are output terminals, and 53a and 54b are output terminals.
Reference numerals c and 54c denote branch output terminals, respectively. Each of the above input terminals 45,
Reference numeral 46 is individually connected to the input terminals 53a and 54a of the circuits 53 and 54, respectively. Further, each of the plurality of sets of output terminals, that is, a set of output terminals 48, 49 or an output terminal 51,
In the set 52, each output terminal of the set is individually connected to the output terminal of each of the individual branch distribution circuits 53 and 54 described above. That is, as shown, in each set, one of the output terminals of the set is connected to one branch distribution circuit, and the other output terminal is connected to the other circuit.

Next, in FIG. 3A, reference numeral 56 denotes a distributor shown as another example of the branching distributor for joint reception. Reference numeral 57 denotes a case of the distributor, and a mounting portion 58 provided integrally.
At the box 4. Reference numerals 60 and 61 denote a pair of input terminals for inputting high-frequency signals, both of which are attached to the case 57. Reference numerals 62 and 63 denote a pair of output terminals for outputting a high-frequency signal, both of which are attached to the case 57. 64, 65
Is another set of output terminals for outputting high frequency signals, all of which are attached to the case 57. As is well known, both the input terminal and the output terminal are configured by pairing a signal terminal and a ground terminal. Case 57 above
As shown in FIG. 5, there are housed therein the same number of branch distribution circuits as the number of the input terminals, in this example, distribution circuits 66 and 67. These circuits 66 and 67 have the same function,
66a and 67a are input terminals, 66b and 67b are first distribution output terminals,
Reference numerals 66c and 67c denote second distribution output terminals, respectively. The respective terminals are individually connected to their input terminals or output terminals as shown in the drawing, as in the case of the branching device 41. 68
Is a first branch line, and 69 is a second branch line, both of which use coaxial cables. Coaxial cables are also used as the trunk lines 25 and 26 and the distribution lines 27 and 28. As the coaxial cable, a cable in which two wires are integrally connected like a parallel vinyl cord may be used. 72 is a cable retainer for retaining various coaxial cables.

In such a configuration, the branching device
The high-frequency signals coming into the input terminals 45 and 46 from the first and second trunks 25 and 26 connected to the input side of 41 are respectively branched circuits.
Output to output terminals 48 and 49 via 53 and 54,
And is sent to the next stage through the second main line 25, 26. A part of the high-frequency signal is branched in branch circuits 53 and 54 and output from output terminals 51 and 52. The high-frequency signals are supplied to the input terminals 60,
Entered in 61. The input high-frequency signals are individually distributed in distribution circuits 66 and 67, and one of them is output from output terminals 62 and 63, and reaches the terminal 7a via distribution lines 27 and 28. The other one of the distributed signals is output from the output terminals 64 and 65, respectively, and reaches the other terminal 7b via the distribution lines 27 and 28.

FIGS. 6 and 7 show an embodiment of the structure of the distributor 56. FIG. In the figure, a case 57 is composed of a main body 70 having an opening on one surface and the other surface, and lids 71 and 72 for closing each opening of the main body. Both the main body 70 and the lids 71 and 72 are formed of a metal material having good conductivity, for example, aluminum, and the lids 71 and 72 are fixed to the opening of the main body 70 by press-fitting. The mounting portion 58
Is formed integrally with the main body 70. 73 is a mounting screw. 74 is a shield plate provided in the screen in the body 70,
It is formed integrally with the main body 70. Numeral 75 is a projection for connecting an earth circuit protruding from the inner peripheral side surface of the main body. As the input and output terminals 60 to 65, for example, F-type connectors as shown are used. 76 indicates an outer conductor of the plug, and a main body 70
And is electrically connected to it. 77 is a center conductor. Next, each of the distribution circuits 66 and 67 is configured using a printed circuit board. Further, as is clear from the drawing, both circuits have the same structure and are used in a back-to-back orientation. In these circuits, reference numeral 78 denotes a signal circuit conductor, 79 denotes an earth circuit conductor, 80 denotes a circuit element, and 81 denotes an earth terminal formed by a part of the earth circuit conductor 79. These distribution circuits 66 and 67 are shown in FIG.
Then, the printed circuit board is stored in the case of the main body 70 in the state shown in FIG. The position of the input terminal of each branch distribution circuit on the printed circuit board is determined near the corresponding input terminal. A plurality of branch distribution circuits 80, 80 on the printed circuit boards 66, 67 in the case 57
Are received signals of mutually different radio waves, but the respective frequencies are arranged three-dimensionally separated so as to be capable of branching and distributing the plurality of high-frequency received signals input in a mutually overlapping state, and Output terminals 66b, 66c, 67b, 67 in the circuit of
With respect to the plurality of sets of output terminals 62 to 65 disposed on the outer surface of the case for each of the above sets, the position of c is wiring-positioned so as to be determined near each corresponding output terminal. Further, the input terminals 66a, 67a and the output terminals 66b, 66c, 67b, 67c of the distribution circuits 66, 67 are connected to the input terminals 60, 61 and the output terminals 62 to 62, respectively.
The ground terminal 81 is connected to the projection 75 by soldering, while being connected to the center conductor 77 in 65 by soldering. Parts that are functionally considered to be the same as or equivalent to those in the preceding figure are given the same reference numerals as in the preceding figure, and redundant description is omitted. (Also in the following drawings, the same reference numerals are used for the same idea, and duplicate description will be omitted.)

8 and 9 show another embodiment of the structure of the distributor 56. FIG. In FIG. 8, the case 57 includes a concave main body 84 and a lid 85 for closing the opening of the main body 84. These are all formed of a metal material having good conductivity. Reference numeral 86 denotes a circuit receiving portion protruding from the main body 84. 87
Is a member called a multilayer printed circuit, and the two distribution circuits 66 and 67 are constituted by the member. The multilayer printed circuit 87 includes a plurality of conductor layers 88, 90, as shown in FIG.
It is a well-known structure formed by laminating and polymerizing 92 and insulator layers 89 and 91. Referring now to FIG. 9, reference numeral 88 denotes a first conductive foil layer, which has a strip conductor and the distribution circuit.
66 are configured. Reference numeral 89 denotes a first insulator layer made of, for example, glass epoxy or Teflon. Reference numeral 90 denotes a second conductor foil layer, which constitutes a ground conductor. Reference numeral 91 denotes a second insulator layer, which is similar to the first insulator layer 89. Reference numeral 92 denotes a third conductor foil layer, and the distribution circuit 67 is formed using strip conductors. or
93 indicates a well-known through hole. The second conductor foil layer 90 serving as the ground conductor has a shielding function of shielding between the first conductor foil layer 88 and the third conductor foil layer 92, and the first and third conductor foil layers 88. , 92 to form a microstrip line. The multilayer printed circuit 87 configured as described above is accommodated in the case main body 84 in a state of being received by the receiving portion 86, and in this state, a predetermined connection of the input terminal, the output terminal, or the ground terminal 81 is established as shown in FIG. , 7.

FIGS. 10 and 11 show still another embodiment of the structure of the distributor 56. FIG. In the figure, reference numeral 95 denotes a circuit board, which is constituted by using a printed wiring board having copper foil attached to only one side. A printed wiring board having copper foils attached to both sides may be used. 96 is a jumper wire provided on the back surface of the circuit board 95. When a double-sided printed circuit board is used, a copper foil and a through hole may be used instead of the jumper wire 96. In this embodiment, the input and output terminals 60 to 65 are external conductor fasteners 97 so that coaxial cables can be directly attached.
A directly-mounted terminal having a well-known structure composed of a central conductor fastener 98 and a center conductor stopper 98 is used. Reference numerals 99 and 100 denote shield plates disposed between the central conductor fasteners of the respective terminals and between the central conductor fastener and the circuit element 80, and are formed of a metal plate having good conductivity. It is fixed to the circuit board 95 and is connected to the earth circuit conductor 79. Reference numeral 101 denotes a cable-introducing tubular body projecting from the case main body 84, which is integrally formed with the case main body 84 at a position corresponding to the external conductor fastener of each terminal.

FIG. 12 shows an embodiment in which the positions of the distribution output terminals in the distributor 56 are different. One set of distribution output terminals 62 and 63 and another set of distribution output terminals 64 and 65 are provided. Are provided on the left and right separate side walls of the case 57.

Next, FIG. 13 shows another example of the branching / distributing device for joint reception, and shows an example of the four-way distributor. In this example, the distribution output terminals 103 and 104 are a set of two 105.
Are provided. 106 and 107 are four distribution circuits, respectively.
Each of the distribution circuits 108 and 109 having the same function is configured by combining three of them. Reference numerals 106a and 107a denote input terminals of the four distribution circuits, and reference numerals 106b and 107b denote output terminals.

Next, FIG. 14 shows an embodiment in which the positions of the distribution output terminals in the four distributor are different. Two sets of output terminals are provided on the left and right side walls of the case 57, respectively.

Next, FIG. 15 shows another example of the branching / distributing device for joint reception. In the case 57, four sets of input terminals 111 and four sets of 113 output terminals 112 are used. And an example in which four two distribution circuits 114 are provided in the case. 114a and 114b are an input terminal and an output terminal of the distribution circuit 114, respectively. Such a distributor can be used in a joint receiving system using four transmission lines.

FIG. 16 shows another example of the branching / distributing device for joint reception, in which two sets of branching output terminals 51 and 52 are connected to two.
It is a figure which shows the branching device provided with the set. Reference numerals 116 and 117 denote branch distribution circuits, each of which comprises a one branch circuit 118 and a two distribution circuit 119. 116a and 117a indicate input terminals of the circuits 116 and 117, 116b and 117b indicate output terminals, and 116c and 117c indicate branch output terminals, respectively.

Next, FIG. 17 shows another example of the broadcast signal transmitted to the transmission line 6, wherein the first trunk line 25 has (A)
And the broadcast signal (B) is transmitted to the second trunk line 26, respectively.

[0022]

As described above, according to the present invention, when transmitting a plurality of high-frequency signals having overlapping frequencies, the signals are received by the individual input terminals 60 and 61 (45, 46) and are individually divided and distributed. The circuits 66, 67 (53, 54) separately branch and distribute, and can output from the individual output terminals 62, 63, 64, 65 (48, 49, 51, 52), respectively. There is an advantage that the plurality of high frequency signals can be received.

According to the present invention, a plurality of input terminals for receiving a plurality of high-frequency reception signals are provided in a set on the outer surface of one case, and further provided on the outer surface of the one case. By arranging a plurality of sets of output terminals, each having the same number as the number of the input terminals, in a set, the input terminals and the output terminals are destined for the respective locations. Are received from a plurality of input terminals as a set of received signals of mutually different radio waves, and are transmitted to a plurality of output terminals through a plurality of mutually different branch distribution circuits. When a plurality of sets of signals destined for each of the above-mentioned mutually different radio waves are separately transmitted after branching and distributing, one set of the mutually different radio wave reception signals is output for each destination on the output side. As one each There is a feature that can be connected in the state. This means that each of the plurality of transmission lines for each destination on the input side or the output side naturally becomes a single unit, and there is a usefulness that routing and other processes are facilitated. In addition, there is an advantage that the possibility of occurrence of connection error of the transmission line to each of the plurality of terminals can be extremely reduced.

Further, according to the present invention, a branch distributor is provided for each destination on the output side so that the received signals of mutually different radio waves can be connected as one set as a set. There is a risk that the wiring may become complicated in the configuration described above. However, the printed circuit board is positioned and installed inside the case, and the received signals of mutually different radio waves are separately branched and distributed to the printed circuit board. The same number of the branch distribution circuits are provided in correspondence with the number of the input terminals, and the positions of the input terminals of the respective branch distribution circuits on the printed circuit board are determined near the corresponding input terminals. The plurality of branch distribution circuits on the printed circuit board are a plurality of high-frequency reception signals which are received signals of mutually different radio waves, but whose respective frequencies are mutually overlapped. The branch terminals are arranged so as to be separated from each other as much as possible, and the positions of the respective output terminals in these circuits correspond to a plurality of sets of output terminals arranged on the outer surface of the case separately for each set. Since the wiring is positioned so as to be fixed near each output terminal, there is no danger of erroneous wiring occurring during assembly, and there is an effect that a highly reliable product can be provided.

[Brief description of the drawings]

FIG. 1 is a diagram showing a joint receiving system using multi-cable transmission.

FIG. 2 is a diagram illustrating an example of a broadcast signal transmitted through a transmission path.

FIGS. 3A and 3B are diagrams showing a wiring state in a wiring device box.

FIG. 4 is a circuit diagram of a branching device.

FIG. 5 is a circuit diagram of a distributor.

FIG. 6 is an exploded perspective view of the distributor.

FIG. 7 is a longitudinal sectional view of the distributor of FIG. 6;

FIG. 8 is an exploded perspective view showing a different example of the structure of the distributor.

FIG. 9 is an exploded perspective view of a multilayer printed circuit.

FIG. 10 is a front view showing still another example of the structure of the distributor with a case lid removed.

FIG. 11 is a partially cutaway side view of the distributor of FIG. 10;

FIG. 12 is a circuit diagram showing an example of a distributor having different positions of distribution output terminals.

FIG. 13 is a circuit diagram showing a four-way distributor.

FIG. 14 is a circuit diagram showing an example of a four-way distributor having different positions of distribution output terminals.

FIG. 15 is a circuit diagram showing a two-way splitter for a four-cable joint receiving system.

FIG. 16 is a circuit diagram showing a branch device having two sets of branch output terminals.

FIG. 17 is a diagram showing another example of a broadcast signal transmitted through a transmission path.

[Explanation of symbols]

 57 Case 60, 61 Input terminal 62 to 65 Output terminal 66, 67 Distribution circuit

Claims (1)

(57) [Claims] 1. A plurality of mutually different reception signals of radio waves are received as a set from a plurality of input terminals, and branched and distributed to a plurality of output terminals through a plurality of mutually different branch distribution circuits. Receive different radio signals
In a splitter / distributor for joint reception in which a plurality of sets of signals destined for a set are individually transmitted, a plurality of input terminals for receiving high-frequency reception signals of mutually different radio waves are provided on an outer surface of one case. Are arranged in a set, and a plurality of sets of output terminals, each set having the same number as the number of the input terminals, are arranged on the outer surface of the one case. On the other hand, in the case, a printed circuit board is positioned and installed, and the pudding board is provided with a branch distribution circuit for separately branching and distributing received signals of mutually different radio waves by the number of the input terminals. The positions of the input terminals of the respective branch distribution circuits on the printed circuit board are determined near the corresponding input terminals, and the input terminals are connected to the input terminals of the respective circuits. Each of them is individually connected to enable reception of a different radio wave reception signal, and a plurality of branch distribution circuits on the printed circuit board in the case are different from each other, although they are different radio wave reception signals. Are arranged so as to be capable of branching and distributing a plurality of high-frequency reception signals input in a mutually overlapping state, and the position of each output terminal in those circuits is divided for each of the above sets, and For a plurality of sets of output terminals arranged on the outer surface, wiring is positioned so as to be determined near each corresponding output terminal, and each of the above output terminals is individually provided at a corresponding output terminal in each of the above circuits. , And a plurality of sets of signals destined for one set of the above-mentioned mutually different radio wave reception signals are individually transmitted.