JPH0218584Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Field of Application] The present invention relates to an amplification device having an input/output terminal to which an external device such as a magnetic recording/playback device is connected.

[Prior Art and Problems Therewith] Generally, an amplifier device including a preamplifier circuit is provided with a connection terminal so that a magnetic recording/playback device can be connected as an external device for recording and playback. (for example,
Due to the necessity described in the "Tape Music Guide" published by Ongaku no Tomosha), the terminal is usually provided on the back of the amplifier, and once the amplifier, magnetic recording/playback device, speaker device, etc. Once wired and installed, unless it is portable,
Each one was heavy and difficult to move, and the back was difficult to see and narrow, making it difficult to change the wiring connections. or,
There are amplifiers that allow two magnetic recording and playback devices to be connected, and operations such as recording and playback can be performed between the two devices to create a copy of the magnetic tape, but as mentioned above, Since the connection terminals are on the back of the amplifier, it is inconvenient to actually use it unless it is constantly connected. In some cases, one magnetic recording/playback device is always connected, and the other one is portable or connected to another external device. , and may be connected to a terminal to perform recording and playback operations as necessary.

[Means for Solving the Problems] The present invention has been developed in view of the above points.Input/output terminals for connecting at least one set of external devices are provided on the operation panel surface so that connection operations can be easily performed from the front. The purpose of the present invention is to provide an amplification device that uses the following methods.

[Example] The present invention will be described below with reference to the drawings. FIG. 1 is an electrical signal system diagram of a general audio playback device.
A speaker 2 is connected to the amplifier circuit 1 and amplifies a signal from a signal input terminal 3 to produce sound. A magnetic recording/reproducing device is connected to the recording output terminal 4 and the input terminal 5, and these terminals are generally provided on the back side of the amplifier.

FIG. 2 is for explaining one embodiment of the present invention, and is a perspective view showing the entire amplifying device. The amplifier device 10 is similar to the conventional device in that it has an operation panel 21 on the entire surface and knobs for operation and a changeover switch are provided in front of the operation panel 21, but terminal board installation portions 22 are provided on appropriate parts of the entire surface. The above-mentioned recording output terminal 42 and input terminal 52 are provided here.

With this configuration, even after the amplifier has been installed and wired, the magnetic recording and playback device can be freely connected for temporary use or testing, and when not connected, the terminal can be seen, so to hide it, a lid 2 that can be opened and closed is installed.
3 and close it when not connected.

For further convenience, as shown in FIG.
are provided with changeover switches 64 and 65, respectively.
Wires are connected to the portions corresponding to points a and b in FIG. 1 through. The selector switches 64 and 65 are switched in conjunction with the opening and closing operations of the lid 23, so that in the closed state, the terminals 41 and 51 on the back side are connected to the portions corresponding to points a and b, and in the open state, the switches 64 and 65 are connected. Terminal board installation part 2
The terminals 42 and 52 of No. 2 are connected to the portions corresponding to points a and b.

With this configuration, the fixed magnetic recording/playback device is always connected to the back side, and when necessary, the front cover 23 is opened and the magnetic recording/playback device is connected to the recording input and playback output terminals 42 and 52. When the machine is connected, the input/output terminals 41 and 51 on the rear side become disconnected, allowing temporary or experimental use.

In the above embodiment, the amplifier device 10 is provided with a playback input terminal and a recording output terminal, and a magnetic recording/playback device is exemplified as an external device connected to this, but other input/output terminals are provided and connected to this. It may also be other external equipment such as a VCR.

Further, although the explanation has been made using only one system of signals, the present invention can be implemented as is with two or more systems.

[Effects] As described above, with the present invention, even after a relatively heavy amplifying device is installed at home or for business use, external equipment can be easily operated. Moreover, it has the great effect of being able to be used temporarily and experimentally. In addition, the lid is normally closed when not connected to the front input/output terminals, which improves the appearance from the front and reduces the amount of dust attached to the terminal board installation area, improving the reliability of the amplifier. It brings about effectiveness.

[Brief explanation of the drawing]

The figures are for explaining the present invention. Fig. 1 is a wiring diagram of a conventional amplifier, Fig. 2 is a partially cutaway perspective view of an amplifier according to the invention, and Fig. 3 is a wiring diagram of the same device. be. 22...Terminal installation part, 23...Lid, 42...Recording output terminal, 52...Recording playback terminal, 64, 65
...changeover switch.

Claims (1)

[Claims for Utility Model Registration] In order to connect input/output signals from external devices,
A rear terminal section having rear input/output terminals on the rear surface, a terminal board installation section for installing the front input/output terminals on a part of the front operation board, and a terminal board installation section covering the terminal board installation section for connecting the front input/output terminals. An amplifier device having an input/output terminal including a lid that can be opened and closed and an amplifier circuit that processes the input/output signal, wherein the front input/output terminal is connected to the amplifier circuit in response to opening of the lid. An amplifier device having an input/output terminal, characterized in that a changeover switch is provided for connecting the rear input/output terminal to the amplifier circuit in response to closing of the lid.