JP2003304797A - Insect repellent apparatus - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an insect pest-repellent apparatus that can effectively repel insect pests as adverse effects to human bodies are alleviated without reduction in indoor workability. <P>SOLUTION: The insect repellent apparatus 10 comprises a clock signal generating circuit 12, a pattern signal generating circuit 14, a timing signal generating circuit 16, a modulation circuit 18, a filter 20, an amplifier 22 and an ultrasonic speaker 24. The clock signal generating circuit 12 outputs a clock signal of a constant frequency within the ultrasonic range to the modulation circuit 18. The pattern signal generating circuit 14 expresses the predetermined characteristics of the voice of a bat and a pattern signal for gradually reducing the frequency of the clock signal is output to the modulation circuit 18. The modulation circuit 18 modulates the clock signal of a constant frequency into FM with the pattern signal. The modified signal is subjected to a prescribed filtration treatment by means of a filter 20, amplified with the amplifier 22 and output through the ultrasonic speaker 24. <P>COPYRIGHT: (C)2004,JPO

Description

Detailed Description of the Invention

[0001]

TECHNICAL FIELD The present invention relates to an insect repellent device,
In particular, the present invention relates to an insect repellent device that repels insects by outputting ultrasonic waves.

[0002]

2. Description of the Related Art Conventionally, as a method of controlling insects, a method using a drug, a method of providing a physical barrier,
There were methods such as using light and ultrasonic waves.

The method of using a drug is a means for realizing insect repellent by insecticidal action and repellent action, and is a method generally performed in various places, but it has an adverse effect on the human body due to suction or adhesion to the skin. There was a possibility.

Further, in the method of providing a physical barrier, it is possible to prevent the invasion of insects and the like into the inside of the building by improving the airtightness of the building. It is impossible to make a completely hermetically sealed state in terms of time and space, and the higher the hermeticity, the less convenient the use of the building.

In the method of utilizing light, the amount of light is reduced or the ultraviolet rays that attract insects are cut off to reduce the attractiveness of the illumination light source, or conversely, an ultraviolet lamp is used to attract insects. There is a method to capture it, but because it is necessary to attach UV cut film etc. to windows and lighting equipment, it will be unnatural color or dark inside the room, Workability may be impaired. There is also a problem that the light source of ultraviolet rays is harmful to the human body.

As described above, in the above technique, the health of the human body is deteriorated and the workability is deteriorated. This is caused by the fact that the above technique unavoidably acts on both humans and pests. Can be said to be.

On the other hand, the method of utilizing ultrasonic waves is to control moths, mosquitoes, insects and the like by outputting ultrasonic waves emitted by natural enemies such as bats. This is due to the ultrasonic waves emitted by the bats when they search for insects that are food.
It uses the escape behavior of insects that try to escape their predation by inducing the self-defense instinct inherent in insects.

In this way, insects can be prevented by artificially reproducing the ultrasonic waves emitted by bats. In addition, the use of ultrasonic waves outside the human audible range can reduce the effect on the human body.

As an insect repellent utilizing such ultrasonic waves, for example, Japanese Patent Application Laid-Open No. 5-289683 discloses
A technique for escaping a pest by radiating a pseudo-generated ultrasonic bat sound while gradually increasing the amplitude is disclosed.

Further, Japanese Patent Laid-Open No. 8-317756 discloses a program sound output from a speaker of an electronic device such as a television or a radio to which an ultrasonic sound emitted by a bat or the like is output to output pests. The technology is disclosed.

Further, Japanese Patent Publication No. Sho 57-34972 discloses a technique for repelling a moth by continuously or intermittently generating ultrasonic waves which are the same as or similar to the standard sound emitted by bats.

[0012]

However, ultrasonic waves are merely inaudible to humans and are not special sound waves in the natural world. In addition, bats use ultrasonic waves that always contain frequency-modulated components to search for insects that are foods, and insects use these ultrasonic waves as a key stimulus for escape behavior, that is, a specific action for causing an animal to perform a certain action. Recognized as a signal. For this reason, ultrasonic waves having a constant frequency without features are unlikely to be a key stimulus for insects and the like.

In this regard, the technique disclosed in Japanese Patent Laid-Open No. 5-289683 has a problem that it generates ultrasonic waves of a constant frequency and cannot effectively prevent insects. .

Further, in Japanese Patent Application Laid-Open No. 8-317756 and Japanese Patent Publication No. 57-34972, there is no description about what kind of oscillation pattern an ultrasonic wave is generated, and the techniques described therein are also described. However, there is a problem that it may not be able to effectively prevent insects.

The present invention has been made to solve the above problems, and can reduce the adverse effects on the human body and can effectively prevent insects without impairing workability in a building. The purpose is to provide a possible insect repellent device.

[0016]

In order to achieve the above object, the invention according to claim 1 is characterized in that at least a period in which the frequency is reduced is included by a pattern signal representing a predetermined bat voice characteristic. It is characterized by further comprising: a generating unit that generates the modulated ultrasonic signal at a predetermined cycle, and an output unit that outputs the ultrasonic signal generated by the generating unit.

The frequency of the voice emitted by the bat, which is the key stimulus for the escape behavior of insects, is the frequency in the ultrasonic range, and includes at least the period during which the frequency decreases. Therefore, in the generating means, the ultrasonic wave frequency-modulated by the pattern signal representing the characteristics of the predetermined bat, that is, the ultrasonic wave signal is frequency-modulated so as to include the period in which the frequency decreases at least. Generate a signal. This ultrasonic signal is generated at a predetermined cycle.
This makes it possible to generate an ultrasonic signal similar to the ultrasonic wave emitted by the bat.

The output means outputs the ultrasonic signal generated by the generating means. As a result, the same ultrasonic waves as the ultrasonic waves emitted by the bats are output, and insects and the like can escape. A plurality of output means may be provided.
By installing a plurality of output means over a wide range, it is possible to prevent insects in a wider range.

Further, as described in claim 2, the generating means may include setting means for setting the period so as to intermittently include the ultrasonic signal. Thereby, the ultrasonic signal can be intermittently output at an arbitrary cycle.

The types of bats are pattern signals,
That is, since it can be considered that it varies depending on the frequency change pattern and the cycle of the ultrasonic signal to be output, as described in claim 3, the generating unit is configured to generate ultrasonic waves corresponding to a plurality of predetermined types of bats. It is also possible to have a configuration that further includes a selection unit that is capable of generating a signal and that selects at least one of the plurality of pattern signals that represent the type of the bat and the period. This allows
The combination of the pattern signal and the period can be arbitrarily selected. Therefore, for example, by selecting the pattern signal and the cycle corresponding to the bat actually inhabiting the place where the device is installed, it becomes possible to more effectively prevent insects depending on the place.

Further, as described in claim 4, the generating means may gradually change the cycle in a predetermined period. For example, the foraging behavior when searching for food for bats is divided into a search period, an approach period, and an end period, and the frequency of ultrasonic waves at the end period tends to be higher than that during the search period. Therefore, if the cycle is gradually shortened, the output frequency of the ultrasonic signal can be gradually increased. As a result, the feeding behavior of bats can be approximated, and insect control can be performed more effectively.

Further, as described in claim 5, the output means may gradually change the sound pressure level of the ultrasonic signal. For example, the sound pressure level of the ultrasonic signal is gradually increased. This makes it possible to make insects feel as if the bats are gradually approaching, so that insects can be effectively prevented.

Further, as described in claim 6, the generating means may be configured to include a harmonic overtone signal generating means for generating a harmonic overtone signal of the ultrasonic signal. As a result, the ultrasonic waves emitted by the bat can be brought closer to the insects, and the insects can be effectively prevented.

Further, as described in claim 7, it is possible to further comprise a detecting means for detecting the ultrasonic signal output by the output means, and an informing means for informing the detection result.

As the notifying means, for example, a displaying means for notifying that the ultrasonic signal has been detected is displayed, or a voice output means for notifying by voice. This makes it possible to easily confirm whether or not the generated ultrasonic signal is output.

The generating means may be, for example, a clock signal generating means for generating a clock signal having a frequency in the ultrasonic range, a pattern signal generating means for generating the pattern signal, and the pattern. And a timing signal generating means for outputting a timing signal for generating a signal at the predetermined cycle to the pattern signal generating means, and a modulating means for modulating the clock signal with the pattern signal. You can

Further, as described in claim 9, the generating means stores the digital data of the ultrasonic signal, and a converting means for converting the digital data stored in the storing means into an analog signal. It can be realized by a configuration including and.

[0028]

BEST MODE FOR CARRYING OUT THE INVENTION (First Embodiment) A first embodiment of the present invention will be described below with reference to the drawings. In this embodiment, ultrasonic waves generated by bats are generated and output,
An analog insect repellent device that repels insects by letting them escape will be described.

FIG. 1 shows an insect repellent device 10 according to this embodiment.
It is shown. The insect repellent device 10 includes a clock signal generation circuit 12, a pattern signal generation circuit 14, a timing signal generation circuit 16, a modulation circuit 18, a filter 20, and an amplification circuit 2.
2 and the ultrasonic speaker 24.

The clock signal generating circuit 12 corresponds to the clock signal generating means of the present invention, the pattern signal generating circuit 14 corresponds to the pattern signal generating means of the present invention, and the timing signal generating circuit 16 is the timing signal of the present invention. The modulation circuit 18 corresponds to the modulation means of the present invention, and the ultrasonic speaker 24 corresponds to the output means of the present invention.

As described above, bats use ultrasonic waves that always contain frequency-modulated components to search for insects that are food, but the ultrasonic wave oscillation patterns are roughly classified into CF.
There are two types: (Constant Frequency) ultrasonic waves and FM (Frequency Modulated) ultrasonic waves.

Here, the CF ultrasonic wave is an ultrasonic wave which is oscillated at a constant frequency without changing its frequency.
Ultrasonic waves are ultrasonic waves that are oscillated while the frequency decreases or increases.

The sounds of bats differ depending on their types. Broadly speaking, as shown in FIG. 2 (A), FM type ultrasonic waves whose frequency is gradually decreased, and FIG. 2 (B) are shown. As described above, it is possible to divide into a CF + FM type ultrasonic wave in which a constant frequency continues for a predetermined time and then decreases.

As shown in FIGS. 2A and 2B, the FM
In both the case of the ultrasonic wave of the CF type and the case of the ultrasonic wave of CF + FM type, the component of the FM ultrasonic wave which changes in the direction of decreasing the frequency is surely included. In the sounds of river murmuring and the rubbing of the leaves of trees,
Many ultrasonic components are included, and in the natural world,
Although ultrasonic waves themselves are not special sounds, many insects recognize the ultrasonic waves emitted by bats as a special sound due to its unique oscillation pattern with FM components.

The insect control device 10 realizes insect control by outputting an ultrasonic wave of FM type or CF + FM type emitted by a bat as shown in FIGS. 2 (A) and 2 (B).

The clock signal generating circuit 12 is, for example, as shown in FIG.
As shown in (A), the modulation circuit 1 modulates a clock signal having a frequency f of at least about 20 kHz in the ultrasonic range.
Output to 8.

The pattern signal generation circuit 14 represents a predetermined bat voice characteristic and changes the frequency f of the clock signal output from the clock signal generation circuit 12 in a predetermined pattern, for example, a pattern signal. A pattern signal for gradually reducing the frequency as shown in FIG. 3B is output to the modulation circuit 18.

The modulation circuit 18 is the clock signal generation circuit 1
A clock signal having a constant frequency as shown in FIG. 3 (A) outputted from No. 2 is FM-modulated by the pattern signal as shown in FIG. 3 (B) outputted from the pattern signal generation circuit 14.

As a result, as shown in FIG. 3C, an FM ultrasonic wave signal whose frequency is gradually decreased according to the level of the pattern signal, that is, an FM modulated wave is generated.

The pattern signal is output to the modulation circuit 18 at a cycle t1 which is predetermined by the timing signal output from the timing signal generation circuit 16. That is, the timing signal generation circuit 16 outputs the timing signal to the pattern signal generation circuit 14 at intervals of the cycle t1.

The period t1 is set longer than, for example, the ultrasonic signal output time (pattern signal output time) t2. As a result, for example, as shown in FIG. 2A, the ultrasonic signal 26 is intermittently output at a predetermined cycle t1. Note that t1 and t2 may be set so that t1 = t2 so that ultrasonic signals are continuously output.

As described above, the ultrasonic signal to be output is determined by the frequency f of the clock signal, the period t1 of the timing signal, the shape of the pattern signal and the output time t2. The shape of the pattern signal, the output time t2, and the cycle t1 of the timing signal are determined, for example, in accordance with the place where the insect control device 10 is installed and the type of bat that actually inhabits the vicinity. The types of bats include, for example, black bats, black-footed bats, and Japanese bats. This allows the insects to escape more effectively.

As described above, the ultrasonic signal generated by modulating the clock signal with the pattern signal in the modulation circuit 18 is output to the filter 20.

The filter 20 performs a predetermined filtering process. The ultrasonic signal subjected to the predetermined filter processing is output to the amplification circuit 22.

The amplifier circuit 22 amplifies the filtered ultrasonic signal with a predetermined amplification factor. The amplified ultrasonic signal is output to the ultrasonic speaker 24.

The ultrasonic speaker 24 sends out the amplified ultrasonic signal to the outside. This allows insects and the like to escape.

As described above, in the present embodiment, the insects are prevented by using ultrasonic waves. Therefore, the adverse effects on the human body can be reduced, and the global environment can be preserved, as compared with the conventional method using drugs. It will be very useful in terms of

Further, even in a building with a low physical shielding property or in an open space where there is no shielding, insect control can be easily and effectively realized. As a result, it is possible to save the energy and space conventionally used to achieve high shielding properties.

Further, in this embodiment, as in the conventional case,
Instead of outputting ultrasonic waves with a constant frequency, it outputs ultrasonic waves containing components whose frequency gradually decreases, so it can be similar to the ultrasonic waves emitted by actual bats, and it can effectively prevent insects. it can.

Since the types of bats may differ depending on the location, it is preferable that the clock signal, the pattern signal, and the timing signal can be arbitrarily selected. Therefore, the clock signal generation circuit 12, so that a plurality of types of clock signals, pattern signals, and timing signals can be output,
Pattern signal generation circuit 14, timing signal generation circuit 1
6, respectively, and as shown in FIG. 4, a switch 28 for selecting any of a plurality of types of clock signals, a switch 30 for selecting any of a plurality of types of pattern signals, and a plurality of types of timings. A switch 32 for selecting one of the signals may be provided.

Thus, any clock signal, pattern signal, and timing signal can be selected, and ultrasonic signals of various bats can be generated. Note that only one of the clock signal, the pattern signal, and the timing signal or only two signals may be selected.

Further, the foraging behavior when searching for food for carnivorous bats is divided into three phases, a search period, an approach period, and a final period, and the ultrasonic pulse generation frequency (repetition frequency) in the search period. Is about 10 pulses (times) / second, but increases to about 200 pulses / times at the end.

Therefore, the number of timing signals output from the timing signal generating circuit 16 to the pattern signal generating circuit 14 per unit time may be gradually increased. That is, the cycle t1 of the timing signal is not made constant but gradually shortened. This allows
It can approach the feeding behavior of bats and can prevent insects more effectively.

Further, in order to output the ultrasonic signal as if the bats are crying while approaching, the amplifier circuit 22 is provided so that the sound pressure level of the ultrasonic signal can be gradually increased. You may comprise. This makes it possible to prevent insects more effectively. In this case, as shown in FIG. 4, a switch 34 may be provided for selecting one of a case of amplifying at a constant level and a case of gradually increasing the amplification level.

Further, as shown in FIG. 4, the ultrasonic sensor 36 for detecting the ultrasonic wave output from the ultrasonic speaker 24 and the light L that lights up or blinks when the ultrasonic wave is detected.
The ED 38 may be provided. This makes it possible to easily confirm that the ultrasonic waves are actually being output.

Further, as shown in FIG. 4, a timer 40 capable of setting the time is provided so that the timing signal generating circuit 16 outputs the timing signal to the pattern signal generating circuit 14 only in the set time zone, that is, The insect repellent device 10 may be configured to operate only during the set time period. This can save the operator the trouble of instructing the start and end of the operation of the insect repellent device 10 one by one. Further, the timer 40 may be configured so that a plurality of time zones can be set so that the insect repellent device 10 operates intermittently.

A plurality of ultrasonic speakers 24 may be provided. As a result, the ultrasonic speaker 24 can be installed in a wide range, and it becomes possible to prevent insects in a wider range.

Since the ultrasonic waves emitted by the bats may be accompanied by overtones, the insect repellent device 10 may be constructed so as to be able to oscillate the overtones. For example, as shown in FIG. 4, a harmonic overtone generation circuit 52A is provided as a harmonic overtone signal generator. The harmonic overtone generation circuit 52A is for generating, for example, an ultrasonic signal of a second overtone of the ultrasonic signal output from the filter 20, and includes a frequency conversion circuit 54 and a local oscillation circuit 56.

The ultrasonic signal F output from the filter 20
i is output to the frequency conversion circuit 54. Further, a clock signal having a frequency twice that of the ultrasonic signal is output from the local oscillation circuit 56 to the frequency conversion circuit 54. The frequency conversion circuit 54 calculates the sum of the ultrasonic signal Fi and the clock signal output from the local oscillation circuit 56, thereby
The ultrasonic signal Fo of the overtone is generated and output to the amplifier circuit 22. Thereby, the ultrasonic signal of the second harmonic is output from the ultrasonic speaker 24.

As shown in FIG. 4, for example, a harmonic overtone generating circuit 52B for the third harmonic overtone, and a harmonic overtone generating circuit 52C for the fourth harmonic overtone.
As described above, a plurality of overtone generation circuits may be provided as necessary. In this case, if the frequency of the clock signal output from the local oscillation circuit 56 is tripled or quadrupled, it is possible to output the ultrasonic signal of the third harmonic or the ultrasonic signal of the fourth harmonic.

In this embodiment, the case of outputting the FM type ultrasonic signal shown in FIG. 2A has been described. However, the CF + FM type ultrasonic signal shown in FIG. 2B is output. May be.

The switches 30 and 32 correspond to the selecting means of the present invention, the timer 40 corresponds to the setting means of the present invention, the ultrasonic sensor 36 corresponds to the detecting means of the present invention, and the LED 38 corresponds to the present invention. Corresponds to the notification means of.

Further, in the present embodiment, the case where the ultrasonic signal including the period in which the frequency decreases is described, but it is easily realized to output the ultrasonic signal including the period in which the frequency increases. it can.

(Second Embodiment) Next, a second embodiment of the present invention will be described. In this embodiment, a digital insect repellent device will be described. The same parts as those in the above embodiment are designated by the same reference numerals, and detailed description thereof will be omitted.

FIG. 5 shows an insect repellent device 50 according to this embodiment.
showed that. The insect control device 50 includes a CPU 42, a memory 44,
It is composed of a DA converter 46, a filter 20, an amplifier circuit 22, and an ultrasonic speaker 24.

The memory 44 corresponds to the storage means of the present invention, and the DA converter 46 corresponds to the conversion means of the present invention.

The memory 44 stores in advance digital data of ultrasonic waves generated by a predetermined bat.

The CPU 42 uses the predetermined cycle t1.
Then, the digital data stored in the memory 44 is read and output to the DA converter 46.

The DA converter 46 converts the digital data output from the CPU 42 into an analog signal and outputs it to the filter 20. This analog signal is a modulation signal (FM modulation wave) output from the modulation circuit 18 shown in FIG.
Equivalent to. The processing after the filter 20 is the same as that in the first embodiment, and thus the description thereof is omitted.

As described above, since the digital data of the ultrasonic wave generated by the predetermined bat is A / D converted and the ultrasonic wave signal FM-modulated is outputted, the ultrasonic wave signal is outputted with a simple device constitution. be able to. In addition, the memory 44
By simply rewriting the digital data stored in, it is possible to easily generate an ultrasonic signal emitted by another type of bat.

The memory 44 stores in advance digital data of ultrasonic waves generated by a plurality of types of bats,
As shown in Fig. 6 so that this can be selected,
The switch 48 may be provided. In this case, C
The PU 42 reads the digital data of the bat selected by the switch 48 from the memory 44 and outputs it to the DA converter 46. This makes it possible to easily switch the type of ultrasonic signal.

The memory 44 may be detachable from the main body. As a result, the type of ultrasonic signal to be output can be switched simply by replacing the memory 44. Further, the plurality of memories 44 may be configured to be removable from the main body. As a result, the types of ultrasonic signals output can be switched, added, and deleted simply by exchanging, adding, or removing the memory 44.

Further, as in the first embodiment, the timer 40 capable of setting the time is provided, and the CP is set only in the set time zone.
The digital data may be output from the U42 to the DA converter 46, that is, the insect repellent device 50 may be activated only during a set time period.

In order to bring the output ultrasonic signal closer to the feeding behavior of bats, the CPU 42 may gradually increase the number of times digital data is output to the DA converter 46 per unit time. . That is, the period t1 for outputting digital data to the DA converter 46 is not made constant but is made gradually shorter. This makes it possible to approach the foraging behavior of bats and more effectively prevent insects.

Further, the amplifier circuit 22 is constructed so that the sound pressure level of the ultrasonic signal can be gradually increased, as shown in FIG.
As shown in, a switch 34 may be provided for selecting either the case of amplifying at a constant level or the case of gradually increasing the amplification level.

Further, as shown in FIG. 6, the ultrasonic sensor 36 for detecting the ultrasonic wave output from the ultrasonic speaker 24 and the light L which is turned on or blinks when the ultrasonic wave is detected.
The ED 38 may be provided.

Further, the digital data stored in the memory 44 may be ultrasonic digital data including overtones.

[0078]

As described above, according to the present invention,
It is possible to reduce the adverse effects on the human body and to effectively prevent insects without impairing workability in the building.

[Brief description of drawings]

FIG. 1 is a schematic configuration diagram of an insect repellent device according to a first embodiment.

FIG. 2A is a diagram showing an example of an FM ultrasonic signal, and FIG. 2B is a diagram showing an example of a CF + FM ultrasonic signal.

3A is a waveform diagram of a clock signal output from a clock signal generation circuit, FIG. 3B is a waveform diagram of a pattern signal output from a pattern signal generation circuit 14, and FIG.
FIG. 4 is a waveform diagram of a modulation signal output from the modulation circuit.

FIG. 4 is a schematic configuration diagram showing another example of the insect repellent device according to the first embodiment.

FIG. 5 is a schematic configuration diagram of an insect repellent device according to a second embodiment.

FIG. 6 is a schematic configuration diagram showing another example of the insect repellent device according to the second embodiment.

[Explanation of symbols]

10,50 insect repellent 12 Clock signal generation circuit 14 Pattern signal generation circuit 16 Timing signal generation circuit 18 Modulation circuit 20 filters 22 Amplifier circuit 24 ultrasonic speaker 26 ultrasonic signals 28 switch 30 switches 32 switch 34 switch 36 Ultrasonic sensor 40 timer 42 CPU 44 memory 46 DA converter 48 switch

   ─────────────────────────────────────────────────── ─── Continued front page    (72) Inventor Kenichi Harakawa             Chiba Prefecture Inzai City 1-5 Otsuka 1 Stock Association             Takenaka Corporation Technical Research Institute (72) Inventor Tetsufumi Kawashima             8-21 Ginza Stock Exchange, Chuo-ku, Tokyo             Takenaka Corporation Tokyo Main Store (72) Inventor Yukio Tsujimoto             8-21 Ginza Stock Exchange, Chuo-ku, Tokyo             Takenaka Corporation Tokyo Main Store F-term (reference) 2B121 AA12 DA59 DA60 DA62 EA01                       FA04 FA11 FA13 FA15 FA16                 5D019 FF01

Claims (9)

[Claims] 1. Generation means for generating an ultrasonic signal, which is frequency-modulated so as to include at least a period in which the frequency is reduced, in a predetermined cycle by a pattern signal representing a predetermined bat voice characteristic, An insect repellent device comprising: an output unit that outputs the ultrasonic signal generated by the generation unit. 2. The insect repellent device according to claim 1, wherein the generation unit includes a setting unit that sets the cycle so as to intermittently include the ultrasonic signal. 3. The generating means is capable of generating ultrasonic signals corresponding to a plurality of predetermined types of bats, and selects at least one of the plurality of pattern signals representing the type of bats and the period. The insect repellent device according to claim 1 or 2, further comprising a selection unit for selecting. 4. The insect repellent device according to claim 1, wherein the generation unit gradually changes the cycle in a predetermined period. 5. The insect repellent device according to claim 1, wherein the output unit gradually changes a sound pressure level of the ultrasonic signal. 6. The insect repellent device according to claim 1, wherein the generating unit includes a harmonic overtone signal generating unit that generates a harmonic overtone signal of the ultrasonic signal. 7. The method according to claim 1, further comprising: a detection unit that detects the ultrasonic signal output by the output unit, and a notification unit that notifies the detection result.
The insect repellent device according to any one of 1. 8. The generating means generates a clock signal generating means for generating a clock signal having a frequency in an ultrasonic range, a pattern signal generating means for generating the pattern signal, and the pattern signal at the predetermined cycle. 8. A timing signal generating means for outputting a timing signal for causing the pattern signal generating means, and a modulating means for modulating the clock signal with the pattern signal, according to any one of claims 1 to 7. The insect repellent device according to item 1. 9. The generating means includes storage means for storing digital data of the ultrasonic signal and conversion means for converting the digital data stored in the storage means into an analog signal. The insect repellent device according to any one of claims 1 to 7.