JPS6134616Y2 - - Google Patents

Description

[Detailed description of the invention] This invention utilizes a tape end shut-off mechanism in the tape recorder section, and cuts off power supply to the radio section when the tape has completed running to the end. The present invention relates to a sleep device for a tape recorder with a radio, which automatically stops the operation of the radio section after a predetermined time even if one falls asleep while listening to a broadcast.

Conventionally, as a sleep device in a tape recorder with a radio, for example, as shown in FIG.
A switch 5 that is opened at the end of tape running of a tape recorder section (not shown) supplies power to a radio section having an audio amplifier 4 connected to a volume and sound quality adjustment circuit 3, and a switch 5 during normal radio operation. Contact a side, contact b during sleep operation
When the tape in the tape recorder section (not shown) runs to the end and its shut-off mechanism operates, the tape recorder mechanism is activated. It has been proposed to release the linked switch 5 and cut off the power supply from the power supply 7 to the radio unit, but with this, the volume and sound quality are the same even during sleep operation as during normal radio operation. Since the radio section operates, you will have to reduce the volume and quality again during sleep mode, and if you return the sleep device to normal radio operation from sleep mode the next day (turn the selector switch from contact B to contact A). ), the volume and sound quality had to be adjusted again.

The present invention was developed in order to eliminate the above-mentioned drawbacks, and in conjunction with the switching operation between radio operation and sleep operation, the audio amplifier of the radio section is equipped with an optimal volume and sound quality adjustment circuit according to the operating state. To provide a sleep device for a tape recorder with a radio, which eliminates the need to adjust the volume and sound quality of the radio section every time the radio operation and sleep operation are switched.

An embodiment of the present invention will be described below with reference to FIG. In the figure, 11 is the antenna of the radio section, 12 is the radio tuner, and 13 is the tuner 1.
Audio amplifier connected to the output side of 2, 14
is a switch that operates in conjunction with the shut-off mechanism of the tape recorder section (not shown), and one terminal of the switch is connected to the sleep side (contact b side) of the selector switch 15, which switches the power supply 16 to switch between normal radio operation and sleep operation. and the other end is connected to the changeover switch 1.
It is connected to the radio side (contact a side) of 5, and
The radio tuner 12 and the audio amplifier 13
It is connected to the. Reference numeral 17 denotes a selection switch for selectively connecting one of the sound quality and volume adjustment circuits 18 and 19 having different characteristics to the audio amplifier 13 of the radio section in conjunction with the operation of the changeover switch 15. .

The operation will be explained below. Now, if you set the selector switch 15 to the radio side (contact a side),
The radio section is connected to a power supply 16 via this switch 15, and the audio amplifier 13 of the radio section is connected via a selection switch 17 to a first volume and sound quality adjustment set to a volume and sound quality characteristic suitable for normal radio operation. It is connected to the circuit 18, and the user can enjoy radio broadcasts whose volume and sound quality are adjusted to be suitable for listening under normal conditions. In addition, the changeover switch 15
When the switch is switched to the sleep side (contact b side), the selection switch 17 is switched in conjunction with this, and the audio amplifier 13 of the radio section switches to the second volume and sound quality set to the volume and sound quality characteristics suitable for the sleep operation. It is connected to the adjustment circuit 19. Thereafter, when the tape in the tape recorder section (not shown) is run, a switch 14 interlocked with the shut-off mechanism (not shown) of the tape recorder section is closed, and the switch 14 and the changeover switch 15 are closed.
The radio section is connected to the power source 16 again through the , and the radio broadcast can be enjoyed with the volume and sound quality adjusted to a level suitable for listening while sleeping without having to adjust the volume and sound quality again. In addition, the sound quality suitable for listening while sleeping means, for example, lowering the volume than when the radio is operating.
And it has a characteristic that relatively emphasizes the low range.
When a predetermined period of time has elapsed in this state, the tape in the tape recorder section (not shown) has finished running to the end, the shut-off mechanism (not shown) is activated, the switch 14 is opened, and power to the radio section is turned off. The supply is cut off and the radio automatically stops its operation.

As described above, according to the present invention, it is possible to switch between normal radio operation and sleep operation without having to adjust the volume and sound quality each time the operation is switched, unlike the conventional sleep device of a tape recorder with radio. In conjunction with this, a volume and sound quality adjustment circuit that is adjusted to the optimal volume and sound quality characteristics for the audio amplifier of the radio section is connected, so that by simply operating the changeover switch, the sleep mode is different from the normal radio mode. You can enjoy radio broadcasts with the volume and sound quality adjusted to a level suitable for listening while sleeping, and the effect is great.

[Brief explanation of the drawing]

FIG. 1 is a block diagram showing a conventional sleep device for a tape recorder with a radio, and FIG. 2 is a block diagram showing a sleep device for a tape recorder with a radio according to the present invention. 13... Audio amplifier, 14... Switch interlocked with the shut-off mechanism of the tape recorder section, 15... Changeover switch, 17... Selection switch, 18, 19... Volume and sound quality adjustment circuit.

Claims (1)

[Scope of utility model registration request] a switching means for switching between normal radio operation and sleep operation; one end connected to the sleep side of the switching means and the other end connected to the radio section to detect when the tape in the tape recorder section has finished running to the end; stopping means for stopping the operation of the radio section; and switching means for selectively switching the audio amplifier of the radio section to first and second volume and sound quality adjustment circuits set to different characteristics from each other. A sleep device for a tape recorder with a radio is provided with a selection means for connection, and configured to obtain an output with a volume and sound quality suitable for listening while sleeping during sleep operation.