JPH0132474Y2 - - Google Patents

Description

[Detailed Description of the Invention] (a) Field of Industrial Application The present invention relates to a stereo tape recorder that is approximately rectangular in shape and has a tape recorder mechanism disposed in the center.

(B) Prior Art A conventional stereo tape recorder generally has a tape recorder mechanism disposed in the center of the device body, and speakers are disposed on the left and right sides of the front surface of the device body. Recently, with the trend toward fashionability, devices are becoming smaller and smaller to make them more convenient for personal mobile use.

In such a stereo tape recorder, if the tape recorder is placed on the street and many people stand around the tape recorder and enjoy the stereo playback sound, the speakers are placed only on the front of the device. Therefore, not only people on the back side but also people facing the front could not hear the reproduced sound sufficiently because the sound emission direction of the speaker was directed downward.

Also, this type of stereo tape recorder is placed horizontally to listen to the stereo playback sound, but if it is placed on a desk with a narrow space, it should be placed vertically in order to make effective use of the space. It would be convenient if you could do that.

However, if a conventional stereo tape recorder is simply turned around and placed vertically, the left and right speakers are positioned above and below, making it impossible to listen to stereo playback sound.

(c) Purpose of the invention The present invention was proposed in view of the above points. Speakers are also placed on the left and right sides of the top surface adjacent to the front of the main body of the device, and the speakers on the front and left and right sides of the top surface provide stereo sound. In addition to expanding the sound field, it is possible to create an acoustic space that cannot be obtained with just the front speakers.In addition, even when the orientation is changed and the speakers are placed vertically, a stereo amplifier is installed for the front and top speakers. The object of the present invention is to provide a stereo tape recorder which automatically switches the supply of left and right channel signals from the front panel and allows stereo reproduction sound to be heard through front and top speakers.

(d) Structure of the invention In order to achieve the above object, the present invention consists of a horizontally elongated device body having a substantially rectangular parallelepiped shape with a tape recorder mechanism disposed in the center and a stereo amplifier, and a front side of the device body. a pair of first speakers arranged on the left and right sides of the device body, a pair of second speakers arranged on the left and right sides of the top surface adjacent to the front surface of the device body, and changing the mounting configuration of the device body from a landscape to a portrait state; and a left and right channel changeover switch that is switched in response to the change in direction, and the changeover switch switches the left channel signal of the stereo amplifier to the first and second speakers on the left side, respectively, when the main body of the device is placed in a horizontal position. and is in a first switching position for supplying the right channel signal to the first and second speakers on the right side, respectively, and when the device main body is placed in a vertical position, the changeover switch
The right (or left) channel signal of the stereo amplifier is simultaneously supplied to a pair of first speakers on the front of the device body, and the left (or right) channel signal of the stereo amplifier is simultaneously supplied to a pair of second speakers on the top of the device body.
The device is configured to be automatically switched from a first switching position to a second switching position so as to simultaneously supply channel signals.

(e) Embodiment An embodiment of the stereo tape recorder of the present invention shown in the drawings will be described below.

FIG. 1 shows a perspective view of the stereo tape recorder of the present invention, and numeral 1 denotes a horizontally elongated device body having a substantially rectangular parallelepiped shape, in which a tape recorder mechanism 2 is disposed in the center, and a stereo amplifier. is provided with a cassette mounting section 3, a radio tuning display section 4, a push button section 5, a volume, sound quality and balance adjustment knob section 6, and a switching knob section 7. 8A and 8B are the front surface 1F of the device main body 1
A pair of first speakers arranged on the left and right sides of the
9B is the top surface 1T adjacent to the front 1F of the device main body 1
A pair of second speakers arranged on the left and right sides of the.
Reference numeral 10 denotes a radio tuning knob disposed on the right side 1R of the main body 1, and a spring 12 is provided on the left side 1L so as to protrude outward from a through hole 11 as shown in FIG. Energized switch operator 1
3 is coming.

The switch operator 13 is used to switch a changeover switch 15 attached to a mounting plate 14 between a first changeover position and a second changeover position. When the device is placed, the switch operator 13 is largely protruded from the left side surface 1L by the spring 12, and the switch 15 is set to the first switching position, so that the device body 1 is placed in the vertical position as shown in FIG. When placed on the mounting table 16, the protruding end of the switch operator 13 comes into contact with the upper surface of the mounting table 16, as shown in FIG.
The switch is configured to be switched from a first switching position to a second switching position.

Next, the speaker switching circuit shown in FIGS. 4 and 5 will be explained.

17L and 17R are a left channel amplifier and a right channel amplifier that constitute a stereo amplifier, and a left channel reproduction head 18L is connected to the input side of the left channel amplifier 17L, and a right channel reproduction head is connected to the input side of the right channel amplifier 17R. 18R is connected. Each of the amplifiers 17
A pair of first speakers 8A, 8B on the front side of the device main body 1 and a pair of second speakers 9A, 9B on the top side are connected to the output side of the switch 15.
The switching connection is made as follows by a pair of switching pieces 15A and 15B.

That is, when the main body 1 of the device is placed in the horizontal position as shown in FIG. As a result, the second speaker 9A on the left side of the top panel is connected to the output side of the left channel amplifier 17L, and the first speaker 8A on the left side of the front panel is connected via the switching piece 15A, and the output side of the right channel amplifier 17R A second speaker 9B on the right side of the top surface is connected via a switching piece 15B, and a first speaker 8B on the right side of the front surface is connected to.

When the device main body 1 is turned around and placed in a vertical position as shown in FIG. Switched to terminal b side. As a result, the left channel amplifier 17L
The output side of the right channel amplifier 17R is connected to the second speaker 9A on the left side of the top surface, and the second speaker 9B on the right side of the top surface via the switching piece 15B. 1 speaker 8
A is connected via the switching piece 15A, and the first speaker 8B on the front right side is also connected.

The above-mentioned speaker switching circuit is an embodiment in which the device body 1 is placed in a vertical position as shown in FIG. 2, and the radio tuning knob is arranged on the left side surface 1L of the device body 1. In addition, when the switch operator is arranged on the right side surface 1R and placed vertically with this right side surface as the bottom surface, the first front speakers 8A and 8B are connected to the output side of the left channel amplifier 17L, and the right channel amplifier Needless to say, it is necessary to switch the speaker circuit so that the second speakers 9A and 9B on the top panel are connected to the output side of the speaker 17R.

As described above, whether the device main body 1 is used in a landscape orientation or a portrait orientation, the left channel signal is sent to the pair of speakers located on the left side when facing the device body 1. The right channel signal can also be supplied to the pair of speakers located on the right side, and the switching is done automatically, allowing you to hear good stereo playback sound in any usage condition. I can do it.

(f) Effects of the invention Since the present invention is constructed as described above, it has a compact shape that is convenient to carry.
It is possible to simultaneously drive the first and second speakers on the front and top surfaces to form a wide stereo sound space, which is extremely useful for a large number of people to listen to stereo reproduction sound. Furthermore, according to the stereo tape recorder of the present invention, even when the orientation is changed from the generally used landscape orientation to the portrait orientation, the front and top speaker circuits can be automatically and appropriately switched to maintain good performance. This is a fashionable tape that allows you to listen to stereo playback sound, so it does not take up much space when demonstrating it alongside other tape recorders on an exhibition stand, etc., and allows for unique stereo playback. As a recorder, it can contribute to improving the product value.

[Brief explanation of the drawing]

Fig. 1 is a perspective view of the stereo tape recorder of the present invention, Fig. 2 is a perspective view of the same tape recorder in different mounting states, Fig. 3 is a sectional view showing the installation state of the selector switch, Figs. 4 and 5. 2 is a speaker switching circuit diagram showing different switching states of the switching switch. FIG. 1...Device main body, 2...Tape recorder mechanism section,
8A, 8B...first speaker on the front, 9A, 9B...
Second speaker on top, 13...Switch operator, 1
5... Selector switch, 16... Mounting table, 17L... Left channel amplifier, 17R... Right channel amplifier.

Claims (1)

[Claims for Utility Model Registration] (1) A horizontally elongated device body having a substantially rectangular parallelepiped shape with a tape recorder mechanism disposed in the center and a stereo amplifier, and a pair of devices placed on the left and right sides of the front of the device body. a first speaker, a pair of second speakers arranged on the left and right sides of the top surface adjacent to the front surface of the device main body, and a pair of second speakers arranged in response to changing the mounting configuration of the device main body from a landscape to a portrait state. a left and right channel changeover switch, the changeover switch supplies the left channel signal of the stereo amplifier to the first and second speakers on the left side when the main body of the device is placed in a horizontal position, and also supplies the left channel signal of the stereo amplifier to the first and second speakers on the left side, respectively; and a second speaker, respectively, and when the device body is placed in a vertical position, the changeover switch switches the stereo amplifier to the pair of first speakers on the front of the device body. simultaneously supplying the right (or left) channel signal of the stereo amplifier, and simultaneously supplying the left (or right) channel signal of the stereo amplifier to a pair of second speakers on the top of the device main body.
A stereo tape recorder characterized by being automatically switched from a switching position to a second switching position. (2) The changeover switch is linked to an operator protruding from the side of the device body, and when the device body is placed vertically with the side surface facing the bottom, the changeover switch moves from the first switching position to the first switching position via the operator. A stereo tape recorder according to claim 1, characterized in that the stereo tape recorder is automatically switched between two switching positions.