KR100638816B1 - A structure for connecting the rf switching box and tunner - Google Patents

Abstract

A structure of connecting an RF(Radio Frequency) switching box and a tuner is provided to improve signal receiving efficiency by minimizing a communication route. A structure of connecting an RF switching box(110) and a tuner(120) includes a first combining part(113), a second combining part(114), a first to-be-combined part(121) and a second to-be-combined part(122). The first combining part is connected to a signal line outputting a switched signal to the outer side of an RF case of the RF switching box. The second combining part transmits and receives bidirectional signals. The first to-be-combined part receives the switched signal, and the second to-be-combined part transmits and receives the bidirectional signals. The first and second to-be-combined parts are located on the outer side of one side of a tuner case corresponding to the first and second combining parts. The first and second combining parts are respectively and directly connected to the first and second to-be-combined parts.

Description

A Structure For Connecting The RF Switching Box And Tunner}

1 is a perspective view illustrating a connection structure of a general RF switching box and a tuner.

2 is a configuration diagram showing a first embodiment of a connection structure of an RF switching box and a tuner according to the present invention.

3 is a perspective view illustrating a first embodiment of a connection structure of an RF switching box and a tuner according to the present invention.

Figure 4 is a block diagram showing a second embodiment of the connection structure of the RF switching box and the tuner according to the present invention.

5 is a perspective view showing a second embodiment of the connection structure of the RF switching box and the tuner according to the present invention.

Explanation of symbols on the main parts of the drawings

110: RF switching box 111: air wave signal input terminal

112: cable signal input terminal 113,114: first and second coupling portion

113a, 114a: Main exterior 113b, 114b: Main interior

120: tuner 121,122: first 1,2 skin parts

121a, 122a: auxiliary appearance 121b, 122b: auxiliary insertion hole

The present invention can improve the reception sensitivity by preventing noise from being transmitted to the tuner side of the broadcast signal switched in the RF switching box, and the connection between the RF switching box and the tuner which can increase the space utilization on the main board. It's about structure.

Recently, the digitalization of broadcast media including terrestrial broadcasting and cable broadcasting has been accelerated, and digital TV receivers have been popularized. Such digital TV receivers provide digital cable broadcasting programs as well as public frequency bands for providing airwave broadcasting programs. The A / V broadcast program is received from the head-end through the cable frequency band and bi-directionally communicated with the head-end through the out-of-band (OOB) band.

Accordingly, the main board of the digital TV receiver is provided with an RF switching box for selecting an over-the-air signal or a cable signal, and a tuner used to select only the signal by tuning to a frequency of a predetermined signal.

FIG. 1 is a block diagram illustrating a connection structure of an RF switching box and a tuner included in a general digital TV receiver. As illustrated, the RF switching box 10 is a diagram of an RF case 13 having various electronic components therein. An air wave signal input terminal 11 into which an air wave signal is input and an cable signal input terminal 12 into which a cable signal is input are provided on an external side.

In addition, the outer side of the RF case 13 is provided with a first output terminal 15 for outputting a switched over-the-air signal or a cable signal and a second output terminal 16 for outputting a bidirectional communication signal.

In addition, the tuner 20 includes an electronic component such as an inductance coil and a capacitor in the tuner case 23, and has one side of the tuner case 23 corresponding to the first and second output terminals 15 and 16. It includes a main terminal 21 to which a switched over-the-air signal or cable signal is input and an OOB terminal 22 to transmit and receive bidirectional communication signals.

Here, the first output terminal 15 and the second output terminal 16 of the RF case 13 must maintain a constant interval to prevent mutual interference between the signals, the interval between them is the tuner case 23 Since the height from the bottom surface of the main board is different from each other and is greater than the distance between the main terminal 21 and the OOB terminal 22, the first and second cables 31 and 32 having flexibility are freely provided. The first output terminal 15, the main terminal 21, and the second output terminal 16 and the OOB terminal 22 were connected to each other.

However, in the connection structure between the conventional RF switching box 10 and the tuner 20, noise is introduced or a frequency loss occurs in the process of transmitting a signal through the first and second cables 31 and 32. There was a problem that the reception efficiency is lowered.

In particular, the second cable 32 to which the two-way communication signal is transmitted and received has a higher cost than the first cable 31 to which airwaves or cable signals are transmitted.

In addition, when assembling the RF switching box 10 and the tuner 20, a minimum distance must be secured so that the first and second cables 31 and 32 can be connected to each other. ) And the space occupied by the tuner 20 is relatively expanded, thereby acting as a factor to inhibit the miniaturization of the product.

The present invention is to solve the above problems, the object is to minimize the communication path to minimize the influx of external noise, improve the reception efficiency of the signal, reduce the manufacturing cost by eliminating the use of expensive cables, while occupying It aims to provide the connection structure of RF switching box and tuner that can minimize the space and make the product smaller.

As a construction means for achieving the above object, the present invention

In a structure in which an RF switching box having a plurality of input terminals on one outer surface of the RF box to receive an air wave signal and a cable signal, and a tuner used to select only the signal by tuning to a frequency of a predetermined signal,

A first coupling part connected to a signal line for outputting a switched signal and a second coupling part for transmitting and receiving bidirectional signals on the other outer surface of the RF case, and one side of a tuner case corresponding to the first and second coupling parts; The outer surface includes a first to-be-coupled portion for receiving the switched signal and a second to-be-coupled portion for transmitting / receiving bidirectional communication signals, and directly connecting one-to-one corresponding first and second coupling portions to the first and second coupling portions. It provides connection structure of RF switching box and tuner.

Preferably, the first and second coupling parts include a hollow main outer tube and a hollow main inner tube disposed at an inner center thereof and connected to a signal line extending from an input terminal, and the first and second coupling parts inside the inner tube. It is made of a secondary insertion rod that is inserted into and electrically connected to.

More preferably, on the outside of the auxiliary insertion rod is provided with an auxiliary appearance inserted into the gap between the inside and the exterior of the main.

More preferably, the tip of the auxiliary insertion rod protrudes outward from the tip of the auxiliary exterior.

Preferably, the first and second coupling parts include a main insertion rod connected to a signal line extending from the input terminal, and the first and second coupling portions include an auxiliary inner tube to which the main insertion rod is inserted and electrically connected thereto. It consists of an auxiliary exterior placed in the inner center.

More preferably, the outer side of the main insertion rod is provided with a main outer tube inserted into a gap between the auxiliary inner and outer tubes.

More preferably, the tip of the main insertion rod protrudes outward from the tip of the main exterior.

Preferably, the gap between the first and second coupling parts is provided in the same size as the gap between the first and second coupling parts, and the height of the first and second coupling parts is between the first and second coupling parts and the main board. It is provided with the same size as.

Preferably, the RF case is provided with a plurality of shield chassis along a signal line electrically connecting between the input terminal and the first and second coupling parts.

More preferably, the shield chassis is electrically connected to the ground terminal.

Hereinafter, the present invention will be described in more detail with reference to the accompanying drawings.

2 is a configuration diagram showing a first embodiment of the connection structure of the RF switching box and the tuner according to the present invention, Figure 3 is a view showing a first embodiment of the connection structure of the RF switching box and the tuner according to the present invention Perspective view.

 As shown in FIGS. 2 and 3, the connection structure of the RF switching box and the tuner of the present invention uses an expensive cable while preventing external noise from flowing in during the signal transmission and reception between the RF switching box 110 and the tuner 120. The first and second coupling parts 113 and 114 and the first and second coupling parts 121 and 122 are directly connected between them so as to exclude the same.

That is, the RF switching box 110 has an airwave signal input terminal 111 connected to an antenna (not shown) so as to receive an airwave signal on one outer surface of the RF box 119 in which a plurality of electronic components are embedded; Cable signal input terminal 112 is connected to the wire coaxial cable (not shown) to receive the cable signal.

In addition, the other outer surface of the RF box 119 is provided with a first coupling portion 113 is connected to the signal line outputs the switched signal to output only the signal selected from any one of the air signal or cable signal, And a second combiner 114 for transmitting and receiving two-way communication signals such as e-mail and interactive video games that can be played over the Internet.

Here, the first and second coupling parts 113 and 114 provided in the vertical RF case 119 are disposed at the hollow main appearances 113a and 114a and the inner center thereof, so that the input terminals 111 and 112 are disposed. It is a phone jack type connector consisting of a hollow main inner tube (113b) (114b) connected to the signal line extending from).

In addition, the bottom surface of the RF case 119 having the first and second coupling parts 113 and 114 together with the input terminals 111 and 112 is fixed to the upper surface of the main board 101. A plurality of coupling pieces 116 inserted into and fixed into the coupling holes of the main board 101, and a plurality of terminals inserted into the plurality of terminal holes formed in the main board 101 to be electrically connected to the main board 101. A pin 117 is provided.

In addition, the internal space of the RF case 119 is installed along a signal line electrically connecting between the input terminals 111 and 112 and the first and second coupling parts 113 and 114 to mutually interfere with each other. A plurality of shield chassis 115 is provided to prevent the shield chassis 115 from being connected to a ground terminal of a module substrate (not shown) mounted in the RF switching box 119 to pass a noise signal.

The shield chassis 115 prevents mutual interference between signal lines. When a plurality of via-type ground terminals are provided on left and right sides of the signal line, radio waves generated from the signal lines do not affect adjacent signal lines. And pass to the ground terminal can lower the mutual interference between the signal lines.

In this case, the distance between the input terminals 111 and 112 can be reduced as much as possible between the first and second coupling parts 121 and 122 of the tuner 120, and the first and second coupling parts Since the spacing of the 113 and 114 is the same as the spacing between the input terminals 111 and 112, the spacing of the first and second coupling parts 113 and 114 is provided to the tuner 120. The first and second coupling parts 121 and 122 are equal to each other on a vertical line or a vertical line.

In addition, the height of the main substrate 101 is provided with the first and second coupling parts 113 and 114 and the first and second coupling parts 113 and 114 from the bottom surface thereof to correspond to the main board 101. The first and second coupling parts 121 and 122 mounted on the substrate 101 and the main substrate 101 have the same height.

On the other hand, the tuner 120 provided on the main board 100 together with the RF switching box 110 to select and use only the signal by tuning to a frequency of a predetermined signal is a tuner case 129 in which a plurality of electronic components are embedded The first and second coupling parts 121 and 122 corresponding to the first and second coupling parts 113 and 114 on one side of the outer surface thereof are provided in a vertical tuner case 129, and The first and second coupling parts 113 and 114 and the first and second coupling parts 121 and 122 are directly connected by an insertion method.

Here, the first and second to-be-engaged parts 121 and 122 provided in the horizontal tuner case 129 are inserted into the main inner tubes 113b and 114b to be electrically connected to the auxiliary insertion rods 121b ( 122b) is a phone plug type connector that receives a switched signal or transfers a bidirectional communication signal.

At this time, the outer side of the auxiliary insertion rod (121b) (122b) to the main body to more firmly secure the coupling between the first and second coupling parts 113, 114 and the first and second coupling parts (121, 122). The auxiliary outer tubes 121a and 122a inserted into the gap between the outer surfaces 113a and 114a and the main inner tubes 113b and 114b may be provided.

In addition, the tip of the auxiliary insertion rod (121b) (122b) is preferably provided to protrude more than the auxiliary appearance (121a) (122a) to facilitate insertion into the main inner tube (113b) (114b).

As shown in FIGS. 2 and 3, the RF switching box and the tuner of the present invention have air wave signals and cable signal input terminals 111 and 112 and corresponding first and second coupling parts on the outer surface of the RF case 119. (113) (114) are arranged in a vertical pair in the height direction, the coupling piece 116 and the ground terminal 117 is provided on the bottom may be provided in a vertical type, but is not limited to this, but setter's requirements 4 and 5, the input terminals 111 and 112 and the first and second coupling parts 113 and 114 corresponding thereto are arranged in a pair of left and right in the horizontal direction, and the coupling pieces on the bottom surface. 116b is provided and may be a ground terminal 117a on one side.

Figure 4 is a block diagram showing a second embodiment of the connection structure of the RF switching box and the tuner according to the present invention, Figure 5 shows a second embodiment of a connection structure of the RF switching box and the tuner according to the present invention. Perspective view.

As shown in FIGS. 4 and 5, the first and second coupling parts 113 and 114 provided on one side of the horizontal RF case 119a extend from the input terminals 111 and 112. The first and second to-be-engaged parts 121 and 122 provided with the phone plug-type connector including the main insertion rods 113d and 114d connected to the line and provided on one side of the horizontal tuner case 129a are provided. The hollow auxiliary inner tube 121d and 122d inserted into and electrically connected to the main insertion rods 113d and 114d, and a phone jack type including a hollow auxiliary outer tube 121c and 122c disposed at an inner center thereof. It is provided with a connector.

Here, the main insertion rods 113d and 114d provided in the first and second coupling parts 113 and 114 are provided on the outer side of the auxiliary inner and outer surfaces of the first and second coupling parts 121 and 122. 121c) 121d, 122c, and 122d may be further provided with the main exterior 113c and 114c inserted into the clearance gap, and the tip of the main insertion rod 113d and 114d may be provided in the said main exterior ( It is preferable to provide so that it protrudes outward rather than the front end of 113c) 114c.

According to the present invention as described above, the first and second coupling parts of the RF switching box and the first and second coupling parts of the tuner are composed of a phone jack type connector and a phone plug type connector to be directly connected by an insertion method, thereby switching over the airwaves or Since the cable signal is transmitted to the tuner side and the path for transmitting and receiving the bidirectional communication signal can be minimized, the reception rate can be improved by suppressing the mixing of external noise as much as possible compared to the cable connection using a cable having a certain length as in the prior art. In addition, manufacturing costs can be reduced by eliminating the use of expensive cables.

In addition, since the separation distance between the RF switching box and the tuner provided on the main board can be minimized, the space utilization can be increased during product design, and the volume can be reduced, resulting in a more compact product.

While the invention has been shown and described with respect to particular embodiments, it will be understood that various changes and modifications can be made in the art without departing from the spirit or scope of the invention as set forth in the claims below. It will be appreciated that those skilled in the art can easily know.

Claims (10)

In a structure in which an RF switching box having a plurality of input terminals on one outer surface of the RF box to receive an air wave signal and a cable signal, and a tuner used to select only the signal by tuning to a frequency of a predetermined signal, A first coupling part connected to a signal line for outputting a switched signal and a second coupling part for transmitting and receiving bidirectional signals on the other outer surface of the RF case, and one side of a tuner case corresponding to the first and second coupling parts; The outer surface includes a first to-be-coupled portion for receiving the switched signal and a second to-be-coupled portion for transmitting / receiving bidirectional communication signals, and directly connecting one-to-one corresponding first and second coupling portions to the first and second coupling portions. RF switching box and tuner connection structure. The method of claim 1, The first and second coupling parts may include a hollow main inner tube and a hollow main inner tube disposed at an inner center thereof and connected to a signal line extending from an input terminal, and the first and second coupling parts may be inserted into the inner tube. A connection structure of an RF switching box and a tuner, characterized in that the auxiliary insertion rod is electrically connected. The method of claim 2, The outer structure of the auxiliary insertion rod is connected structure of the RF switching box and the tuner, characterized in that it has an auxiliary appearance that is inserted into the gap between the inside, the exterior. The method of claim 2, The front end of the auxiliary insertion rod is connected to the RF switching box and the tuner, characterized in that provided to protrude outward from the front end of the auxiliary appearance. The method of claim 1, The first and second coupling parts may include a main insertion rod connected to a signal line extending from the input terminal, and the first and second coupling portions may include an auxiliary inner tube and an inner center thereof in which the main insertion rod is inserted and electrically connected thereto. A connection structure of an RF switching box and a tuner, characterized in that the auxiliary exterior is arranged. The method of claim 5, The outer structure of the main insertion rod is connected to the RF switching box and the tuner, characterized in that the main outer tube is inserted into the gap between the inner, outer tube. The method of claim 5, The front end of the main insertion rod is a connection structure of the RF switching box and the tuner, characterized in that protruding outward than the front end of the main appearance. The method of claim 1, The first and second coupling parts may have the same size as the gap between the first and second coupling parts, and the height of the first and second coupling parts may be equal to the height between the first and second coupling parts and the main board. The connection structure of the RF switching box and the tuner, characterized in that provided with. The method of claim 1, The RF case is a connection structure of the RF switching box and the tuner, characterized in that a plurality of shield chassis is provided along the signal line for electrically connecting between the input terminal and the first and second coupling portions. The method of claim 9, The shield chassis connection structure of the RF switching box and the tuner, characterized in that electrically connected to the ground terminal.

Images