JPH04322084A - Signal wire connecting apparatus of video/audio equipment - Google Patents

Abstract

PURPOSE:To make a video tape recorder compact, light weighted, and economical and at the same time take out the outputs of the images and sound excellently while making the previously used plug cord usable by miniaturizing the coaxial-type outer connection terminal part to take out the outputs of the images and sound. CONSTITUTION:Coaxial-type outer connection terminal parts 27, 28 for outputs of the images and sound of a camera-integrated-type VTR main body 21 are made smaller than already existing plugs 10, 11 to be fitted with standardized coaxial-type connectors and at the time of taking out the outputs of the images and sound, the coaxial-type outer connection terminals 27, 28 and the plugs 10, 11 are connected together by using size converting connectors 30, 31.

Description

[Detailed description of the invention]

0001

[Industrial Application Field] The present invention relates to equipment that handles video signals and audio signals, and more specifically, to devices that handle video signals and audio signals, and more specifically, to equipment that handles video signals and audio signals, and more particularly, to equipment that handles video signals and audio signals. This invention relates to a signal line connection device for video/audio equipment such as a camera-integrated video tape recorder.

0002

2. Description of the Related Art A conventional example will be explained with reference to FIGS. 3 and 4. FIG. 3 shows an example of a camera-integrated video tape recorder (hereinafter referred to as a camera-integrated VTR) as a video/audio device, in which 1 indicates an imaging unit 2, a microphone 3, a battery 4, a viewfinder 5, and a grip belt 6. This is a camera-integrated VTR body that includes the following components.

Reference numerals 7 and 8 denote an external connection terminal for taking out a video signal and an external connection terminal for taking out an audio signal, which are arranged side by side on the side wall of the camera-integrated VTR main body 1 so as to be exposed to the outside. The external connection terminals 7 and 8 are round 1PC-S connectors standardized as "C5573" according to the Japanese Industrial Standards (JIS), and have cylindrical outer conductors 7A and 8A, respectively, as shown enlarged in FIG. and internal conductors 7B and 8B placed insulated in their centers, and have a coaxial structure including internal conductors 7B and 8B, which are placed inside a recess 9 formed in the side wall of the camera-integrated VTR main body 1. It is set up.

[0004] When using the camera-integrated VTR 1 equipped with external connection terminals 7 and 8 as described above, if you want to edit the contents of the recorded tape on another video tape recorder or play it back on a television receiver. For example, Figure 3,
As shown in FIG. 4, cylindrical outer conductors 10A and 1 can be fitted on the outside of cylindrical outer conductors 7A and 8A of external connection terminals 7 and 8.
1A, and a coaxial plug 10, 11 at both ends, which has pin-shaped internal conductors 10B, 11B that can be fitted inside the internal conductors 7B, 8B of the external connection terminals 7, 8. This is not necessarily limited to the type shown in the figure, and may be a separate cord.), connect one of the plugs 10, 10 to the external connection terminal 7 of the camera-integrated VTR 1, and connect the other The plug 10 is inserted into a video input terminal (not shown) of the television receiver 13.
11 into the external connection terminal 8 of the camera-integrated VTR 1, and the other into the audio input terminal (not shown) of the television receiver 13.

[0005] Then, the television receiver 13 is set to the external input video mode, and a recorded cassette tape (not shown) to be played back is loaded into the camera-integrated VTR main body 1, and the TV receiver 13 is set to the playback mode.

[0006]

However, in the case of the above-mentioned conventional example, the external connection terminals 7 and 8 are connected to the AV record 12.
Since the coaxial plugs 10 and 11 are directly inserted and connected, the size of the plugs 10 and 11 must naturally be matched. For this reason, Figure 4
As shown in , the dimensions W1 and H1 of the locations where the external connection terminals 7 and 8 are provided are increased, and there are restrictions on the locations where the external connection terminals 7 and 8 are provided, resulting in a loss of freedom and leeway in the design. However, there was a problem in that it hindered efforts to reduce the size, weight, and cost of the camera-integrated VTR body.

In particular, since the example shown in FIG. 3 is for extracting a monaural audio signal, only one external connection terminal 8 is required.
When extracting a stereo audio signal, two audio signal output external connection terminals are required, making the above problem even more serious.

[0008] Furthermore, since camera-integrated VTRs are often used outdoors, a synthetic resin cover (not shown) that allows the recess 9 to be opened and closed is attached to the camera-integrated VTR body. There are many things to do. This is a useful means for minimizing as much as possible the adhesion of dust and the like to the external connection terminals 7 and 8, resulting in a decrease in the video and audio output levels and the generation of noise. However, even when taking such dustproof measures, if the external connection terminals and the recesses that house them are large as described above, the dustproof cover itself has to be large, so the above-mentioned problem arises. It's not, but it's getting more close-up.

[0009] The present invention has the feature of a coaxial external connection terminal that there is little unnecessary radiation of signals to the outside, and also conforms to the currently widely used JIS standard "C5573".
Although the condition of being able to use an off-the-shelf cord with a plug compatible with a round 1PC-S connector (coaxial type connection terminal) compatible with The objective is to provide a signal line connection device for video and audio equipment that is smaller, lighter, and lower in cost.

0010

[Means for Solving the Problems] In order to solve the above problems, the present invention provides a first cord having at its end a coaxial first plug including a cylindrical outer conductor and a pin-shaped inner conductor. a second cord having at its end a coaxial first external connection terminal which can be connected to take out a video signal; and a coaxial second plug having the same or substantially the same shape as the first plug. The video/audio device is equipped with a coaxial second external connection terminal that can be connected to a coaxial type and output an audio signal, and the first and second external connection terminals are connected to the first and second external connection terminals. An inner conductor of a size that makes it impossible to insert the pin-shaped inner conductor of the plug, and an outer diameter that surrounds the outer periphery of the inner conductor and that is sufficiently smaller than the inner diameter of the cylindrical outer conductor of the first and second plugs. and the first and second external connection terminals and the first and second plugs include a cylindrical external conductor of the first and second external connection terminals. a first connector portion that fits and is electrically connected to the inner conductor; and a second connector portion that fits and is electrically connected to each of the cylindrical outer conductor and the inner conductor of the first and second plugs. It is configured to be connected using a size conversion connector having a connector portion.

[0011]

[Operation] By having the above-mentioned structure, the present invention has the following features:
The existing cord can be used as is, and the size (occupied area and volume) of the video/audio signal extraction part in the video/audio equipment is much smaller than in the conventional case, allowing for good video/audio output. It is something that can be done.

0012

[Embodiment] The present invention will be explained below based on the illustrated embodiment, but the cord 12 having a plug 10 for a video signal and a plug 11 for an audio signal, and a television receiver 13 are similar to the conventional example described above. Although they are similar, they are indicated with the same reference numerals. FIG. 1 shows a camera-integrated VTR embodying an example of the present invention, in which numeral 21 includes an imaging unit 22, a microphone 23, a battery 24, a viewfinder 25, a grip belt 26, etc.
This is the TR body.

27 and 28 are 7 and 28 of the above-mentioned conventional example, respectively.
These are coaxial external connection terminals for video output and audio output corresponding to 8, but as is clear from the enlarged view of FIG.
Internal conductors 27B, 28B of a size that makes it impossible to insert B
and a cylindrical outer conductor 27A that surrounds the outer periphery of the inner conductors 27B and 28B and has an outer diameter sufficiently smaller than the inner diameter of the cylindrical outer conductors 10A and 11A of the plugs 10 and 11,
It is a small size including 28A. 2
9 is a recess corresponding to 9 in the conventional example described above, but due to the miniaturization of the external connection terminals 27 and 28, the dimensions W2 and H2 of the mounting portions are smaller than those in the conventional example shown in FIG.
Since >W1, H2>H1, the camera-integrated VTR body 21 can be made smaller, lighter, and thinner.

However, when the camera-integrated VTR body 21 is set to playback mode and played back on the television receiver 13, the plugs 10 and 11 of the cord 12 are not compatible with the external connection terminals 27 and 28. Size conversion connectors 30 and 31 as shown are used. That is, as is clear from FIG.
, 28A, cylindrical outer conductors 30A, 31A and pin-shaped inner conductors 30B, 31B, which are electrically connected to each other by being removably fitted to each inner conductor 27B, 28B, and Each cylindrical outer conductor 10A, 11A and pin-shaped inner conductor 10B, 1 of the plugs 10, 11
The second connector portions 30F, 31F, which have cylindrical outer conductors 30D, 31D and pin-shaped inner conductors 30E, 31E, are integrally formed and are electrically connected by being removably fitted into the second connector portions 1B. There is. In addition, the cylindrical outer conductors 30A, 30D, 31A and 31D, and the pin-shaped inner conductors 30B, 30E, 31B of each size conversion connector 30, 31 mentioned above.
Needless to say, and 31E are electrically connected internally.

Further, in FIG. 2, for convenience of explanation, the upper size conversion connector 30 is shown connected to the plug 10, and the lower size conversion connector 31 is shown connected to the plug 11.
and shows a non-bonded state.

In the above-described embodiment of the present invention, one external connection terminal is used for video output and one for audio output, but even if a plurality of external connection terminals are used, the present invention is applicable. applicable. Furthermore, the present invention also provides a camera-integrated V
It goes without saying that the present invention can be applied not only to TR but also to video/audio equipment such as liquid crystal television receivers, which are particularly required to be compact, lightweight, and low-cost.

[0017]

[Effects of the Invention] As is clear from the above description, the present invention has the feature of a coaxial external connection terminal that there is little unnecessary radiation of signals to the outside, and also has the characteristics of the presently widely used JIS standard. Although we maintain the condition that ready-made cords with plugs compatible with the round 1PC-S connector (coaxial connection terminal) compatible with "C5573" can be used, the video/audio output terminal section of video/audio equipment Since the area and volume occupied by the device can be significantly reduced, it is possible to realize further downsizing, weight reduction, and cost reduction of video/audio equipment.

[Brief explanation of drawings]

[Fig. 1] External view showing one embodiment of the present invention

[Fig. 2] Enlarged cross-sectional side view of main parts of the embodiment of the present invention

[Figure 3] External view showing a conventional example

[Figure 4] Enlarged cross-sectional side view of main parts of conventional example

[Explanation of symbols]

10 Plug 11 Plug 12　　　Camera integrated VTR 27 External connection terminal 28 External connection terminal 30 Size conversion connector 31 Size conversion connector

Claims (2)

[Claims] Claim 1: A first coaxial plug which is connected to a first cord having a first coaxial plug including a cylindrical outer conductor and a pin-shaped inner conductor at its end and is capable of extracting a video signal. a coaxial type external connection terminal, and a coaxial type second cord that is connected to a second cord having at its end a coaxial type second plug having the same or almost the same shape as the first plug, and is capable of extracting an audio signal. The video/audio equipment includes two external connection terminals, wherein the first and second external connection terminals have internal parts that are large enough to make it impossible to insert the pin-shaped internal conductors of the first and second plugs. a conductor, and a cylindrical outer conductor surrounding the outer periphery of the inner conductor and having an outer diameter sufficiently smaller than the inner diameter of the cylindrical outer conductors of the first and second plugs, and the first and a second external connection terminal and the first and second plugs are electrically connected by fitting into the respective cylindrical outer conductors and inner conductors of the first and second external connection terminals. and a second connector portion that is electrically connected to the cylindrical outer conductor and inner conductor of the first and second plugs. A signal line connection device for video/audio equipment characterized by the following. 2. The signal line connection device for video/audio equipment according to claim 1, wherein the size conversion connector has a first connector portion and a second connector portion integrally formed.