JP4312893B2 - Common reception facility power supply - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention is provided in a transmission line for transmitting terrestrial television broadcast signals received by UHF and VHF antennas and satellite television broadcast signals received by satellite broadcasting and satellite communication receiving antennas in a joint reception facility. The present invention relates to a power supply apparatus that transmits operating power via a transmission line to an amplifier and a converter attached to an antenna for satellite broadcasting and satellite communication reception.
[0002]
[Prior art]
Conventionally, as a joint reception facility using the power supply device as described above, there has been one as shown in FIG. The VHF television broadcast signal received by the VHF antenna 2 and the UHF television broadcast signal received by the UHF antenna 4 are amplified by the amplifier 6. The amplified output of the amplifier 6 is divided into four by the four distributor 8 and supplied to the television receiver 12 via the power supply inserter 10. The power supply inserter 10 is connected to a commercial AC power supply via the outlet 14, and converts an AC voltage supplied from the commercial AC power supply into a DC voltage. This DC voltage is supplied to the amplifier 6 through the four distributor 8 to operate the amplifier 6.
[0003]
In such a joint reception facility, when, for example, a satellite broadcast receiving antenna 16 is added and the television receiver 12 also receives satellite broadcasts, the amplifier 6 is connected to UHF and VHF television broadcasts as shown in FIG. In addition to amplifying the signal, the amplifier 6a can also be used to amplify the satellite broadcast first intermediate frequency signal from the satellite broadcast receiving antenna 16, and the power supply inserter 10 also includes the amplifier 6a and the satellite broadcast receiving antenna. It is necessary to change to the power supply inserter 10a which can supply a DC voltage to the converter attached to the. The power supply inserter 10a has a power supply capacity larger than that of the power supply inserter 10.
[0004]
Each of the power supply insertion devices 10 and 10a is provided with a power supply unit and a power supply insertion unit in one case. The power supply unit converts an AC voltage from a commercial AC power source into a DC voltage having a predetermined value. Although the output voltage value is the same, the power supply unit of the power supply inserter 10 for the amplifier 6 and the amplifier 6a are used. The power supply capacity of the power supply inserter 10a differs from that of the power supply inserter 10a. On the other hand, the power insertion unit has the same configuration in both of the power insertion devices 10 and 10a and supplies the television broadcast signal supplied to the input terminal to the output terminal connected to the television receiver 12. The DC voltage from the power input terminal connected to the power supply unit is supplied to the input terminal.
[0005]
[Problems to be solved by the invention]
However, in the power supply insertion devices 10 and 10a as described above, the power supply unit and the power supply insertion unit are integrally formed. Therefore, the installation position of the power insertion devices 10 and 10a is limited to the position where the outlet 14 can be connected to the commercial AC power supply, and the installation position of the power insertion devices 10 and 10a is less flexible. When the state shown in FIG. 4 is changed to the state shown in FIG. 5, the power insertion unit 10 is changed from the power insertion unit 10a to the power insertion unit 10a even though the configuration of the power insertion unit of the power insertion units 10 and 10a is exactly the same. It had to be uneconomical.
[0006]
An object of this invention is to provide the power supply insertion device which has the high freedom degree of an installation place and is economical.
[0007]
[Means for Solving the Problems]
The power supply device according to the present invention has a power supply unit that outputs a power supply output obtained by converting a commercial AC power supply from a power supply output terminal. As this power supply output, a voltage obtained by lowering the voltage of the commercial AC power supply or a voltage obtained by converting the AC voltage of the commercial AC power supply into a DC voltage having a predetermined value can be used. The power supply unit may be any one selected from those having various power supply capacities. The power insertion unit further includes a power insertion unit that supplies a television broadcast signal supplied to the input terminal via the transmission line to the output terminal, and supplies a power output supplied to the power input terminal to the input terminal. Have. As the television broadcast signal, in addition to the ground wave signal of UHF or VHF, a satellite such as a satellite broadcast first intermediate frequency signal or a satellite communication first intermediate frequency signal from a satellite broadcast reception antenna or a satellite communication reception antenna. A first intermediate frequency signal is included. In addition, FM radio broadcast signals and CATV independent broadcast signals may be included. The power output supplied to the input terminal is supplied to, for example, an amplifier via a transmission line connected to the input terminal. Alternatively, the power output is supplied to a converter attached to a satellite broadcasting or satellite communication receiving antenna. These power supply unit and power supply insertion unit are housed in separate cases. That is, the power supply unit and the power supply insertion unit are separated. The power supply output terminal of the power supply unit and the power supply input terminal of the power supply insertion unit are connectable via a transmission line.
[0008]
According to this power supply device, since the power supply unit and the power supply insertion unit are separated, the installation position of the power supply insertion unit can be freely selected. In addition, when the equipment that supplies power by this power supply device, such as an amplifier, is changed from the one used so far to another one, only the power supply unit is attached to the one having a power capacity corresponding to the changed amplifier. What is necessary is just to change, and the power supply insertion part can use what is used now as it is.
[0009]
A power output terminal is provided on one surface of the case of the power supply unit . A power input terminal is provided on one surface of the case of the power supply insertion portion. The surface on which the power output terminal is provided and the surface on which the power input terminal is provided are formed so as to be in contact with each other. In this contact state, the power output terminal and the power input terminal have complementary shapes that can be directly connected to each other .
[0010]
If comprised in this way, a power supply part and a power supply insertion part can also be used as an integrated type, and can also be used as a separated type. Even when used as an integrated type, by connecting the power output terminal and the power input terminal electrically, it can be mechanically connected at the same time, and this connection can be made very easily. .
[0011]
In addition to this, the power output terminal of the power supply unit is arranged with a male plug and a female plug arranged side by side . The power input terminal of the power supply insertion part is connected to the female plug and the female plug that are connected to the male plug when the power supply and the case of the power supply insertion part are in contact with each other. Each having a male plug.
[0012]
With this configuration, the electrical and mechanical connection between the power supply unit and the power supply insertion unit is performed by connecting the male plug of the power supply unit and the female plug of the power supply insertion unit, and the female plug of the power supply unit. Since the male plugs function as positioning, the connection can be performed quickly. Even when the power supply unit and the power supply insertion unit are separated from each other, it can be relatively easily performed. In addition, when the power supply unit and the power supply insertion unit are used separately, the male plug of the power supply unit and the male plug of the power supply insertion unit are provided with corresponding female connectors at both ends. By connecting with the transmission line, the power supply unit and the power supply insertion unit can be easily connected electrically.
[0013]
DETAILED DESCRIPTION OF THE INVENTION
As shown in FIG. 1, the power supply device according to the embodiment of the present invention includes a power supply unit 20 and a power supply insertion unit 22. The power supply unit 20 is provided in a flat rectangular parallelepiped case 24. An automatic voltage regulator 26 is arranged inside the case 24 as shown in FIG. The automatic voltage regulator 26 converts a commercial AC voltage supplied from a commercial AC power supply via an outlet 28 into a predetermined voltage, for example, a DC voltage of +15 V, and supplies the converted voltage to the power output terminal 30. . The power output terminal 30 is a connector in which a male plug 30a and a female plug 30b are connected in parallel. As shown in FIG. 1, the male plug 30 a and the female plug 30 b are provided so as to be exposed on one side wall 33 of the case 24. As shown in FIG. 1, a plurality of types of power supply units 20 having different power supply capacities are prepared in advance.
[0014]
The power supply insertion portion 22 is also provided in a flat rectangular parallelepiped case 32. An input terminal 34 and an output terminal 36 are provided on one side wall of the case 32. Any one of male and female plugs can be used for the input terminal 34 and the output terminal 36. A television broadcast signal, for example, a terrestrial television broadcast signal received by a VHF or UHF antenna 40 is amplified by an amplifier 38 from an amplifier 38 as shown in FIG. A DC blocking capacitor 42 is connected between the input terminal 34 and the output terminal 36 as shown in FIG. Therefore, the terrestrial television signal supplied to the input terminal 34 is supplied to the output terminal 36 via the DC blocking capacitor 42. As shown in FIG. 3, the terrestrial television signal at the input terminal 34 is supplied to the television receiver 44 by connecting the output terminal 36 to the television receiver 44 via a coaxial cable, for example.
[0015]
As shown in FIG. 1, a power input terminal 48 is provided on the other side wall 46 of the case 32 of the power supply insertion portion 22. The power input terminal 48 has two female plugs 48a and 48b connected in parallel. As shown in FIG. 2, a high frequency blocking coil 50 is connected between the power input terminal 48 and the input terminal 34 as shown in FIG. 2. The DC voltage supplied to the power input terminal 48 is supplied to the input terminal 34 via the high frequency blocking coil 50. Reference numeral 52 denotes a capacitor, which forms a low-pass filter together with the DC blocking capacitor 50.
[0016]
The side wall 33 of the case 24 of the power supply unit 20 and the side wall 46 of the case 32 of the power supply insertion unit 32 are formed in the same shape. In a state where these side walls 33 and 46 are in contact with each other so as to overlap each other, a male plug 30a that is a power output terminal of the power supply unit 20 and a female plug 48a that is a power input terminal of the power supply insertion unit 22 are provided. Both positions are determined so as to be connected to each other. Similarly, the female plug 30b which is the power output terminal of the power supply unit 20 and the male plug 48b which is the power input terminal of the power supply insertion unit 22 are connected to each other in the contact state between the side walls 33 and 46. The installation position is determined.
[0017]
Even when the satellite first intermediate frequency signal or the like is supplied to the input terminal 34 in addition to the terrestrial television signal, the terrestrial television signal and the satellite first intermediate frequency signal are supplied to the output terminal 36 without any trouble. The values of the DC blocking capacitor 42, the high frequency blocking coil 50, and the capacitor 52 are selected so that the DC output supplied to the power input terminal 48 can be supplied to the input terminal 34 without any problem.
[0018]
In the power supply device configured as described above, for example, when the power supply unit 20 and the power supply insertion unit 22 are used as a unit, the side wall 33 of the case 24 and the side wall 46 of the case 32 are overlapped as shown in FIG. Match. As a result, as shown by the arrow A, the male plug 30a of the power supply unit 20 and the female plug 48a of the power supply insertion unit 22 are connected, and the female plug 30b of the power supply unit 20 and the power supply insertion unit 22 are connected. The male connector 48b is connected. Therefore, the power supply unit 20 and the power supply insertion unit 22 are electrically connected, and both are mechanically connected. In addition, since the male plugs 30a and 48b function as positioning, the two can be easily integrated, and the two can be easily separated.
[0019]
Further, when the amplifier 38 is replaced with another amplifier capable of amplifying the satellite broadcast first intermediate frequency signal in order to change from the reception state of only the terrestrial wave to the additional reception state of satellite broadcasting or the like, the power source currently used In the unit 20, the power supply capacity of the power supply unit 20 may be insufficient with respect to the replaced amplifier. At this time, as indicated by an arrow B in FIG. 1, another power supply unit 20 having a power supply capacity corresponding to the amplifier to be replaced is used. However, the power supply insertion unit 22 can be used as it is. Therefore, only the power supply unit 20 needs to be replaced, which is economical.
[0020]
Moreover, since the power supply part 20 and the power supply insertion part 22 can be isolate | separated, the power supply part 20 can be arrange | positioned, for example in the vicinity of commercial AC power supply, and the power supply insertion part 22 can be arrange | positioned in arbitrary positions. That is, the degree of freedom of arrangement of the power supply insertion portion 22 is large. In this case, electrical connection between the power input terminal 30 and the power output terminal 48 is necessary. This connection can be made by connecting one of the two power input terminals 48a and 48b and one of the power output terminals 30a and 30b.
[0021]
However, for example, as shown in FIG. 3, it is desirable to connect a male connector such as the power output terminal 30a and a male connector such as the power input terminal 48b. In this case, this connection can be easily made by using a transmission line for connecting both male plugs, for example, a coaxial cable having female plugs at both ends of the coaxial cable. Even in the case of separate use, the power supply unit 20 can be changed to another capacity according to the replacement of the amplifier 38, and the power supply insertion unit 22 can be used as it is.
[0022]
In the above embodiment, all the power supply units 20 generate a DC voltage. However, depending on the amplifier used, the power supply unit 20 may generate an AC voltage obtained by stepping down a commercial AC voltage. In the above-described embodiment, the power supply unit 20 supplies the operating voltage to the amplifier. However, in some cases, the power supply unit 20 may supply the operating voltage to a converter attached to an antenna for receiving satellite broadcast or satellite communication.
[0023]
【The invention's effect】
As described above, in the power supply device according to the present invention, since the power supply insertion portion and the power supply portion can be separated, there is a degree of freedom in the installation position of the power supply insertion portion, and according to the change of the device that supplies the operating voltage. Since only the power supply unit can be changed, it is economical.
[Brief description of the drawings]
FIG. 1 is a perspective view of a power supply device according to a first embodiment of this invention.
2 is a circuit diagram of the power supply device of FIG. 1;
FIG. 3 is a circuit diagram showing a state where the power supply device of FIG.
FIG. 4 is a block diagram showing a usage state of an example of a conventional power supply device.
FIG. 5 is a block diagram showing a usage state of another example of a conventional power supply device.
[Explanation of symbols]
20 Power supply part 22 Power supply insertion part 24 Case of power supply part 30 Power supply output terminal 32 Case (case of power supply part)
34 Input terminal 36 Output terminal 48 Power input terminal

Claims (1)

A power supply unit that outputs a power supply output converted from a commercial AC power supply from a power supply output terminal;
A power supply insertion section for supplying a television broadcast signal supplied to the input terminal via the transmission line to the output terminal and supplying a power output supplied to the power input terminal to the input terminal;
Housed in separate cases, the power output terminal of the power supply unit and the power input terminal of the power supply insertion unit can be connected via a transmission line,
One surface of the case of the power supply unit provided with the power supply output terminal of the power supply unit and one surface of the case of the power supply insertion unit provided with the power supply input terminal of the power supply insertion unit are formed in contact with each other. In this contact state, the power output terminal and the power input terminal have complementary shapes that can be directly connected to each other.
The power supply output terminal of the power supply unit has a male plug and a female plug arranged side by side, and the power supply input terminal of the power supply insertion unit is connected to the power supply output terminal of the male plug in the contact state. A joint receiving facility power supply apparatus comprising: a female plug that is connected, and a male plug that is connected to the female plug in the contact state.

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