JPH0132224Y2 - - Google Patents

Description

[Detailed explanation of the idea] Conventionally, when showing a facility such as an exhibition hall, exhibit hall, or factory to a large number of visitors, a guide guides the visitors according to a predetermined course and provides verbal explanations in each section. was doing. In this case, if there are a large number of visitors or if there is a lot of noise in the facility, it may not be possible to give a thorough verbal explanation to all the visitors. Furthermore, when using loudspeakers to improve this problem, there is a risk of disturbing other visitors.

Furthermore, in the past, an audio guide system using electromagnetic induction was installed inside the swing facility, and visitors could listen to the guidance based on electromagnetic induction from the audio guide system using a receiver. In this case, although there is no disadvantage as mentioned above, the voice guidance device becomes complicated and expensive, which is not preferable. In addition, especially in factories and the like, it is difficult to permanently install such voice guidance devices as in exhibition halls, exhibition halls, and the like.

In view of this, the present invention allows accurate explanations of each section of the facility to be guided to each visitor to be easily conveyed to each visitor without installing a complex and expensive guidance device in the facility to be guided. This paper aims to propose a voice guidance device.

The audio guidance device according to the present invention includes a tape recorder, a tuner, a headphone, an audio amplification circuit, and a control circuit, and the control circuit receives a remote control signal emitted from the guidance section and puts the tape recorder into a playback state. Then, when silence is detected in the playback state of the tape recorder, the tape recorder is stopped and the audio received from the tuner is controlled to be supplied to the headphone through the audio amplification circuit. It controls the signal to be supplied to the headphone through an audio amplification circuit.

An embodiment of the present invention will be described below with reference to FIG. TC indicates the main part of the tape recorder, TP
9 indicates the magnetic tape, and 9 indicates the magnetic head for reproduction. The reproduction signal from the magnetic head 9 is amplified by a reproduction amplifier 10. Further, on this magnetic tape TP, explanations for each section of the exhibition hall are sequentially recorded in the longitudinal direction through silent sections. The length of the silent section is selected so that it can be easily detected by a control circuit 11, which will be described later.

1 is a tuner for receiving radio broadcasts, and 2 is its receiving antenna. The radio transmitter can be a public or commercial broadcast station or a private station within the facility.

3 is the tape recorder TC and tuner 1 mentioned above.
an audio amplification circuit to which an audio signal is supplied, and the amplified audio signal is supplied to the headphone 4.
is supplied to

Reference numeral 11 denotes a control circuit, the specific configuration of which will be explained below. Reference numeral 12 denotes an infrared light receiving element, which detects infrared light emitted from infrared light sources provided in each section within the facility. The detection output of the light receiving element 12 is supplied to a detection amplifier 13. This detection amplifier 13 is supplied with a DC voltage from a power supply +B. This DC power supply +B may use a battery such as a primary battery or a secondary battery. 22 is a tape running drive motor of the tape recorder TC, which is connected to the power supply +B via a switching transistor 21.
It is connected to the.

Power supply +B is connected to ground through resistor 15 and capacitor 14 in series. A pair of switching transistors 16 and 17 are connected in parallel to both ends of the capacitor 14. Then, the output of the amplifier 13 is supplied to the base of the transistor 16, and a part of the output from the regenerative amplifier 10 is supplied to the base of the transistor 17 via the capacitor 26.
The transistor 16 is turned on when the light receiving element 12 detects infrared rays, and the transistor 17 is turned on when the magnetic head 9 is reproducing the guide reproduction signal. A midpoint between the resistor 15 and the capacitor 14 is connected to the base of the driving transistor 18 . The collector of the driving transistor 18 is connected to the power supply +B through a load resistor 20, and its emitter is grounded.

The output end of the tuner 1 is connected to an audio amplification circuit 3 via an attenuator 5 consisting of resistors 6, 7 and a capacitor 8.
The output terminal of the regenerative amplifier 10 is directly connected to the input terminal of the audio amplification circuit 3. The midpoint of the connection between the resistors 6 and 7 of the attenuator 5 is connected to the collector of the switching transistor 19 via the capacitor 8, its emitter is grounded, and its base is connected to the transistor 19.
8 collector. Furthermore, the collector of transistor 18 is connected to the base of transistor 21. The collector of the transistor 21 is connected to the power supply +B via the motor 22, and its emitter is grounded.

Incidentally, such a voice guidance device includes a control circuit 11 and an attenuator 5 in a small cassette tape recorder with a radio.
etc. can be obtained by adding

Next, the operation of the voice guidance device shown in FIG. 1 will be explained. This audio guidance device is provided to each visitor, and the headphone 4 is placed over the ear. The guide then guides the participants through each section of the tour according to a predetermined course. When a certain section to be guided is reached, when the infrared rays from that section are detected by the infrared receiving element 12, an output is obtained from the detection amplifier 13.
The transistor 16 is temporarily turned on, and the potential at the connection point between the resistor 15 and the capacitor 14 becomes approximately the ground potential. Therefore, transistor 18 is turned off and transistors 19 and 21 are both turned on. By turning on the transistor 19,
The audio signal from tuner 1 is transmitted through resistor 6 of attenuator 5.
- Capacitor 8 - Collector of transistor 19 -
Since the audio signal is bypassed through the emitters, the audio signal is no longer supplied to the audio amplification circuit 3. On the other hand, by turning on the transistor 21, the motor 2
2 rotates and the magnetic tape TP runs, the guiding reproduction signal recorded therein is reproduced by the magnetic head 9 and supplied to the audio amplification circuit 3 through the reproduction amplifier 10. When a regenerative signal is obtained from the regenerative amplifier 10, the transistor 17 is turned on, and even if the transistor 16 is turned off, the off state of the transistor 18 is maintained.

And the magnetic tape in that certain section
When one guidance by TP ends, a silent period occurs, so the transistor 17 changes from on to off, and the base potential of the transistor 18 is approximately equal to the power supply +B.
Therefore, transistor 18 is turned on, and therefore transistors 19 and 21 are both turned off. When the transistor 19 is turned off, the bypass of the received audio signal from the tuner 1 is canceled, and when the transistor 21 is turned off, the running of the tape TP is stopped. For this reason,
The received audio signal from tuner 1 is supplied to audio amplification circuit 3 via attenuator 5 . Note that the audio signal from the tuner 1 mainly uses music, especially when it is from a broadcasting station within the facility. In this way, infrared rays are detected by the light receiving element 12 in each section, and the above-described operation is repeated every time a silent period of the magnetic tape TP is detected thereafter.

In addition, the audio guidance device is used not only by the visitors but also by the guide or leader, and the audio guidance device is equipped with a tape recorder.
Each part will be moved according to the content of the guidance from the TC.

Next, another embodiment of the present invention will be described with reference to FIG. In this embodiment, instead of providing the infrared light receiving element 12 as shown in FIG. 1, the control circuit 11 is controlled by radio waves from a broadcasting station within the facility. In FIG. 2, parts corresponding to those in FIG. 1 are given the same reference numerals, and some redundant explanations will be omitted. In the case of the audio guidance system shown in FIG. 2, stereo audio signals are particularly reproduced by the headphone 4. For this reason, the audio signal from the tuner 1 is supplied to the multiplexer 23, and the left and right audio signals L,
The signal is separated into R and supplied to the audio amplification circuit 3. The magnetic head 9 also uses a stereo magnetic head, and its left and right reproduction signals are amplified by a reproduction amplifier 10, and the amplified left and right audio signals L and R are amplified by a reproduction amplifier 10.
is supplied to the audio amplification circuit 3.

A portion of the output from the multiplexer 23 is supplied to a pilot detection circuit 24, which detects a pilot signal only during stereo broadcasting, supplies this to the multiplexer 23 for stereo demodulation, and also supplies it to a detection amplifier 25. supply,
The transistor 16 is turned off when the broadcast is monaural.

Therefore, the broadcasting station in the facility monitors the visitors led by the guide, and switches the broadcast radio waves to monaural or stereo depending on the situation. In this case, when no pilot signal is detected, the absence of the pilot signal is detected by sense amplifier 25, turning off transistor 27, which causes transistor 16 to turn on. Note that 28 is a light emitting diode serving as a stereo broadcast display, and its anode is connected to the power supply +B, and its cathode is connected to the collector of the transistor 27 and the base of the transistor 16. During stereo broadcasting, the transistor 27 is turned on and the diode 28 emits light.

Therefore, the difference in operation from Figure 1 is that when visitors come to each section, the radio waves broadcast from the broadcasting station within the facility are normally stereo broadcasts, but become monaural broadcasts. In this case, the audio signal from the tuner 1 is bypassed by the transistor 19, the tape recorder TC operates to reproduce the stereo guide signal recorded on the magnetic tape TP, and the stereo guide signal is transmitted to the audio amplifier circuit 3.
It is intended to supply In this case as well, only the guidance reproduction signal reproduced from the magnetic tape TP may be monaural.

In the embodiment shown in Fig. 2, the tuner 1 is switched to the tape recorder TC when the broadcast radio waves from the broadcasting station are switched from stereo to monaural broadcast, but vice versa. Of course, when switching to stereo broadcasting, the tuner 1 may be switched to the tape recorder TC.

According to the audio guidance device of the present invention described above, accurate explanations of each section of the facility to be guided can be provided without installing multiple expensive guidance devices in the facility such as an exhibition hall, exhibit hall, factory, etc. This information can be easily communicated to each visitor at the time of their visit to each section. Moreover, pleasant music can be provided to the visitors during the transition from one section to the next, so that the fatigue of the visitors can be alleviated to some extent. In addition, the leader does not need to explain the exhibits, etc., so there is no fatigue.
Furthermore, if a tour course is determined in advance and the tour can be followed sequentially by just the visitor, there is no need for a guide.

[Brief explanation of the drawing]

1 and 2 are circuit diagrams showing respective embodiments of the present invention. TC is a tape recorder, 1 is a tuner, 2 is an antenna, 3 is an audio amplification circuit, 4 is an electroacoustic transducer such as a headphone or earphone, and 11 is a control circuit.

Claims (1)

[Scope of utility model registration request] It has a tape recorder, a tuner, a headphone, an audio amplification circuit, and a control circuit, and the control circuit receives a remote control signal issued from a guidance section and puts the tape recorder into a playback state to perform guidance playback. The signal is controlled to be supplied to the headphone through the audio amplification circuit, and when silence is detected in the playback state of the tape recorder, the tape recorder is stopped and the audio signal received from the tuner is supplied to the headphone. A voice guidance device which is controlled to be supplied to the headphone through a voice amplification circuit.