JP2001190211A - Device for preventing animal intrusion - Google Patents

Abstract

PROBLEM TO BE SOLVED: To easily cope with a change in a place where the prevention of animal intrusion, is deseied, and to properly select a detecting area by an infrared ray sensor and an ultrasonic radiation area. SOLUTION: A device 1 for preventing animal intrusion is assemble as follows: the infrared ray sensor 2 for detecting the intrusion of animals such as a dog and a cat and an ultrasonic transducer 3 for radiating ultrasound as a menace preventing animal intrusion by a detection signal from the sensor 2 are internally installed in a housing 10; and a detecting area-changing means 4 is installed to make it possible to vary the detecting area A by the sensor 2.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a device for preventing animals such as dogs and cats from entering animals indoors and outdoors.

[0002]

2. Description of the Related Art Hitherto, there have been proposed many devices for preventing invasion of animals and the like by radiated sound in the ultrasonic range. I have. As shown in FIG. 22, the dog / cat repeller shown in this conventional example oscillates a high-frequency band frequency (18 to 22 KHz) disliked by dogs and cats from an oscillator 21 by driving a drive circuit 20, and While the ultrasonic wave having the above frequency is configured to be transmitted, the movement of the dog or cat is detected by the far-infrared sensor 2, the detection signal is amplified by the amplifier 23, and input to the switching circuit 24 and the tracking modulator 25. The drive circuit 20 is intermittently operated by the output signal from the switching circuit 24, and the output signal from the infrared sensor 2 to the tracking modulator 25 is changed by the movement of the dog and cat. The output of the oscillator 21 is varied to modulate the oscillation frequency from the oscillator 21 so as to follow the movement of the dog or cat.

[0003]

However, in the conventional dog / cat repelling device, the detection area of the infrared sensor and the radiation area of the emitted ultrasonic wave are constant areas.
For example, if you want to detect a large area, such as an outdoor garden, or if you want to detect only a specific place, such as on an indoor table, it cannot be used. And the radiation area of the ultrasonic wave could not be selected. Especially for pets that are kept indoors, if you want to eat with your pet close to you, but it is not easy to get up on the table, or detect only animals on the table and threaten only on the table at the same time It emits sound,
There is a demand for a device capable of changing the detection area of the infrared sensor and the radiation area of the threatening sound depending on the outdoor use place.

SUMMARY OF THE INVENTION The present invention has been made in view of the above-mentioned problems of the prior art, and an object of the present invention is to make it possible to easily cope with a change in a place where it is desired to prevent the invasion of an animal. In particular, an object of the present invention is to provide an animal intrusion prevention device that allows a user to appropriately select a detection area of an infrared sensor and an emission area of an ultrasonic wave according to a use place such as indoor or outdoor.

[0005]

According to the present invention, there is provided an infrared sensor for detecting the invasion of an animal such as a dog and a cat, and the detection signal from the infrared sensor for preventing the invasion of the animal. In an animal intrusion prevention device in which a housing 10 is provided with an ultrasonic vibrator 3 that emits an ultrasonic wave that is a threat to perform detection, a detection area changing means 4 for making a detection area A of the infrared sensor 2 variable. With such a configuration, the detection area A is increased when it is desired to detect the invasion of an animal into a wide place, and when it is desired to detect the invasion of an animal into a narrow place. By narrowing the detection area A, it is possible to easily detect only a portion to be detected in accordance with a use place such as indoor or outdoor.

A radiation area varying means 8 for making the ultrasonic radiation area B from the ultrasonic transducer 3 variable.
In this case, the ultrasonic radiation area B is widened for threatening an animal that has entered a wide area, and the ultrasonic radiation area B is used for threatening an animal that has entered a narrow place.
, The threatening sound area at the time of animal invasion according to the ultrasonic radiation area B can be appropriately selected.

The detection area A of the infrared sensor 2
And the ultrasonic radiation area B from the ultrasonic transducer 3 are preferably variable, and in this case, the detection area A and the ultrasonic radiation area B of the infrared sensor 2 are appropriately selected according to the place of use. it can.

The detecting area changing means 4 includes a rotating body 5 having a plurality of openings 5c and 5d having different opening areas for partially shielding the opening detecting portion 11 of the infrared sensor 2.
In this case, by rotating the rotating body 5, any one of the openings 5c and 5d having a different opening area can be arranged to face the opening detecting section 11, whereby the detection area of the infrared sensor 2 can be changed. Switching of A can be performed easily.

Preferably, the detection area changing means 4 comprises an openable and closable shutter 6 for changing the opening area of the opening detecting section 11 of the infrared sensor 2. In this case, the shutter 6 is opened and closed. The opening area of the opening detecting section 11 can be made different, and it is possible to easily switch to an arbitrary detecting area A.

The detecting area changing means 4 comprises a plate 7 which is disposed in front of the opening detecting section 11 of the infrared sensor 2 so as to be able to protrude and retract and partially shields the opening detecting section 11. By appearing and retracting in front of the unit 11, it is possible to easily switch to an arbitrary detection area A.

The radiation area changing means 8 preferably makes it possible to change the ultrasonic radiation area B by switching the intensity of the ultrasonic output from the ultrasonic vibrator 3. The ultrasonic radiation area B can be changed by setting the ultrasonic output to be strong for the threat of, and setting the ultrasonic output to be weak for the threat to an animal that has entered a narrow place.

Also, the opening detecting section 1 of the infrared sensor 2
A rotating body 5 having a plurality of openings 5c and 5d having different opening areas for partially shielding the opening detecting unit 11 is rotatably disposed in front of the unit 1 so that the detection area A of the infrared sensor 2 can be changed. It is preferable that the ultrasonic radiation area B from the ultrasonic vibrator 3 can be changed by switching the intensity of the ultrasonic output. In this case, the rotation operation of the rotating body 5 and the intensity switching operation of the ultrasonic output are performed. In addition, it is possible to easily switch between the detection area A of the infrared sensor 2 and the ultrasonic radiation area B according to the place of use.

The aperture detecting section 1 of the infrared sensor 2
A shutter 6 for changing the opening area of the opening detecting section 11 is provided in front of the shutter 1 so as to be openable and closable so that the detection area A of the infrared sensor 2 can be changed. It is preferable that the radiation area B can be changed by switching the intensity of the ultrasonic output. In this case, the opening / closing operation of the shutter 6 and the operation of switching the intensity of the ultrasonic output change the detection area A of the infrared sensor 2 according to the place of use. And the ultrasonic radiation area B can be easily switched.

The opening detecting section 1 of the infrared sensor 2
A plate 7 that partially shields the opening detection section 11 is disposed in front of the opening 1 so that the detection area A of the infrared sensor 2 can be changed and the ultrasonic radiation area B from the ultrasonic transducer 3 can be changed. It is preferable to be able to change by changing the intensity of the ultrasonic output. In this case, the detection area A of the infrared sensor 2 and the ultrasonic radiation corresponding to the place of use are changed by the operation of moving the plate 7 in and out and the operation of changing the intensity of the ultrasonic output. Switching to area B can be easily performed.

The oscillator of the ultrasonic vibrator 3 sweeps the driving frequency of the ultrasonic vibrator 3 from a low frequency to a high frequency, and sets the upper limit N of the driving frequency to the center frequency of the ultrasonic vibrator 3. M is preferably set near M. In this case, even if the center frequency M of the ultrasonic vibrator 3 varies, the upper limit of the driving frequency of the ultrasonic vibrator 3 is set near the center frequency M. Since the value N exists, the maximum sound pressure can always be generated.

It is preferable to provide a display unit 15 for displaying an operation during the operation of the ultrasonic transducer 3. In this case, the display unit 15 checks whether the animal intrusion prevention device 1 is operating. Becomes possible.

[0017]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below based on embodiments shown in the accompanying drawings.

The animal intrusion prevention device 1 of the present embodiment is shown in FIGS.
As shown in the figure, an infrared sensor 2 for detecting the invasion of an animal such as a dog and a cat, and an ultrasonic vibrator 3 which emits a threatening ultrasonic wave for preventing the invasion of the animal based on a detection signal from the infrared sensor 2 Are housed in the housing 10.
Opening detection unit 1 provided on top of front surface 10a of housing 10
1, an infrared sensor 2 is installed, and a housing 1
The ultrasonic vibrator 3 is installed so as to face the opening radiating portion 12 provided below the front surface 10a of the O. When an animal such as a dog or a cat enters the detection area A (FIG. 20 or FIG. 21) of the infrared sensor 2, the infrared sensor 2 detects this and outputs a detection signal of a predetermined level to the control circuit shown in FIG. Output to the control unit 24 of the block 28 and the controller 2
5 drives the oscillator 21 to oscillate the driving frequency of the ultrasonic wave which the dog and cat dislike. Ultrasonic waves are transmitted from the ultrasonic transducer 3 via the drive circuit 20 based on the output signal from the oscillator 21. Note that reference numeral 26 in FIG. 4 denotes a power supply.

Here, the housing 10 is provided with detection area changing means 4 for making the detection area A of the infrared sensor 2 variable. In this example, the detection area changing means 4 is constituted by a rotating body 5 rotatably disposed in the housing 10 so as to open and close the front of the opening detection unit 11 of the infrared sensor 2 as shown in FIGS. Have been.

The rotating body 5 has a disc-shaped operation plate 5a in plan view.
And a rotary cylinder 5b hanging down from the outer peripheral portion of the operation plate 5a are integrally formed. The rotary cylinder 5b is provided with a plurality of openings 5c and 5d having different opening areas. In this example, as shown in FIG. 2, a round hole-shaped opening 5 c and a horizontally long slit-shaped opening 5 d for partially shielding the opening detection unit 11 are arranged at about 90 ° in the circumferential direction of the rotating body 5. It is provided at an interval at a distance.

On the upper surface 10b side of the housing 10, a support protrusion 13 having a substantially U-shaped cross section for rotatably supporting the rotating body 5 is provided so as to project therefrom. A housing recess 14 is provided for housing the rotary cylinder 5b so as to be rotatable about 90 °. This storage recess 14
Are formed in an arc shape in a plan view so as to communicate with both sides of the opening detection unit 11 respectively. In this example, the vertical dimension L1 (FIG. 2) of the rotary cylinder 5b of the rotary body 5
It is long at the portion where c, 5d is provided, and the openings 5c, 5d
The vertical dimension L2 (FIG. 1) of the portion where the rotary cylinder 5b is not provided is formed short, and the depth of the storage recess 14 is correspondingly large in the portion where the long portion of the rotary cylinder 5b is movably stored. Other than that, it is formed shallow. Here, in a state where the operation plate 5a of the rotating body 5 is put on the upper surface 10b of the support protrusion 13 and the rotating cylinder 5b of the rotating body 5 is rotatably housed in the storage recess 14, the rotating body 5 is 90 ° or more. It is not allowed to rotate, so that either the round hole-shaped opening 5c or the horizontally long slit-shaped opening 5d can be arranged to face the opening detecting section 11.

By rotating the rotating body 5 and aligning the mark 62a or 62b on the operation plate 5a with the mark 62c on the upper surface 10a of the housing 10, the openings 5c and 5d having different opening areas can be formed. Either one can be opposed to the opening detection unit 11, thereby making it possible to easily switch the detection area A of the infrared sensor 2. For example, as shown in FIG.
When it is desired to detect the invasion of the animal 9 into the infrared sensor 2, the detection area A of the infrared sensor 2 is expanded by locating the round opening 5c having a large opening area in the opening detection unit 11 of the infrared sensor 2. As shown in FIG. 21, when it is desired to detect the invasion of the animal 9 on the table 31,
The detection area A of the infrared sensor 2 is narrowed by positioning the horizontally long slit-shaped opening 5 d having a small opening area in the opening detection unit 11. In FIG. 21, reference numeral 32 denotes a chair. In this way, when it comes to pets that are kept indoors, you want to keep the pet close to you and have a meal, but you do not want to be able to get up on the table, or if you detect only animals on the table and As a result, the detection area A of the infrared sensor 2 can be changed depending on the place of use indoors / outdoors such that only a threatening sound is emitted. As a result, the user can appropriately select the detection area A of the infrared sensor 2 according to the place of use. It will be. In addition, since only the rotating operation of the rotating body 5 is required, the operation when only a specific location is to be detected becomes easy.

Another embodiment of the detection area changing means 4 is shown in FIGS. The configuration other than the detection area changing means 4 is the same as that of FIG. 1, and the same portions are denoted by the same reference numerals.
The detection area changing means 4 of the present embodiment is constituted by a shutter 6 having a double-sided double-sided opening structure which is openably and closably disposed in front of the opening detection unit 11 of the infrared sensor 2. The shutter 6 has a pair of left and right grips 6b having an arc shape in plan view.
Shutter member 6a, and both shutter members 6
a is movably attached along the inner surface of the housing 10. Then, as shown in FIG. 7A, the opening degree of the shutter member 6a is set to a narrow angle, or as shown in FIG. Can be easily changed, and an arbitrary detection area A can be easily switched. Even if the housing 10 is fixed, the direction of the detection area A (for example, FIG.
(The direction indicated by the arrow (a) or (b) in (a)) can be easily changed.

Still another embodiment of the detection area changing means 4 is shown in FIGS. The configuration other than the detection area changing means 4 is the same as that of FIG. 1, and the same portions are denoted by the same reference numerals. The detection area changing means 4 of the present embodiment includes a plate 7 which is disposed in front of the opening detection section 11 of the infrared sensor 2 so as to be able to protrude and retract, and partially shields the opening detection section 11. As shown in FIG. 8, the plate 7 has a housing 10 at one end.
The upper end of the opening detecting section 11 is rotatably connected to a hinge 61, and the other end is a free end. In this example, the plate 7 can be turned at least 270 ° around the hinge 61 so that the front surface 10 a
The housing 10 is held at one of a position where it is lowered to cover the front of the opening detection unit 11 and a position where it is flipped up to the upper surface 10b of the housing 10. The plate 7 is provided with a vertically elongated slit-shaped opening 7 a for partially shielding the opening detecting portion 11 of the infrared sensor 2. The opening area of the opening detection unit 11 of the sensor 2 can be made variable, and the detection area A of the infrared sensor 2 can be easily switched to a predetermined detection area.

Still another embodiment of the present invention is shown in FIGS. In this example, a case is shown in which a changeover switch 27 that is a radiation area changing unit 8 for making the ultrasonic radiation area B (FIGS. 20 and 21) from the ultrasonic transducer 3 variable is provided. The changeover switch 27 controls the turning on and off of the power supply 26 and the output of the ultrasonic vibrator 3, and by changing the output of the ultrasonic vibrator 3, can change the ultrasonic radiation area B as a result. And As shown in FIG. 11A, the changeover switch 27 of this example is installed on the back of the housing 10 and is connected to the control circuit block 28 via the lead wire 60. The structure of the control circuit block 28 is the same as that of FIG.
Here, the changeover switch 27 has an off mode, a weak mode, and a strong mode shown in FIG.
In the off mode, the on / off switch SW1 shown in FIG. 12A is turned off, and the power supply from the power supply 26 is cut off. When the mode is set to the weak mode, the on / off switch SW1
Is turned on, and the control switch S shown in FIG.
W2 is connected to the terminal a1 connected to the resistor R, and the ultrasonic wave from the ultrasonic transducer 3 is weakened. On the other hand, when the mode is set to the strong mode, the control switch SW2 sets the terminal a to bypass the resistor R.
2 and the ultrasonic waves from the ultrasonic transducer 3 become stronger. As a result, in order to intimidate an animal that has entered a wide place as shown in FIG. 20, the ultrasonic output can be increased by setting the strong mode to increase the ultrasonic radiation area B.
In the case of threatening an animal that has invaded into a narrow place as in 1, the weak ultrasonic mode can be used to weaken the ultrasonic output and set the ultrasonic radiation area B to be narrow.
Can be easily switched.

FIGS. 13 to 15 show a detection area changing means 4 for making the detection area A of the infrared sensor 2 variable.
And a changeover switch 27 for making the ultrasonic radiation area B from the ultrasonic transducer 3 variable. As the detection area changing means 4, a rotating body 5 is provided in FIG. 13, a shutter 6 is provided in FIG.
Has a plate 7. The rotating body 5, the shutter 6, and the plate 7 are the same as those shown in FIGS. Thus, in a wide place as shown in FIG. 20, the detection area A of the infrared sensor 2 and the ultrasonic radiation area B are set wide respectively, and in a narrow place as shown in FIG. By setting each of the sound wave emission areas B to be narrow, it is possible to effectively threaten an animal that has entered a wide place and threaten an animal that has entered a narrow place.

As still another embodiment of the present invention, the oscillator 21 of the ultrasonic transducer 3 (FIG. 4) sweeps the driving frequency of the ultrasonic transducer 3 from a low frequency to a high frequency as shown in FIG. It is desirable to set the upper limit value N of the driving frequency of the ultrasonic vibrator 3 near the center frequency M of the ultrasonic vibrator 3 shown in FIG. That is, in the output from the control circuit block 28 (FIG. 4) to the ultrasonic vibrator 3, the frequency of the output applied to the ultrasonic vibrator 3 is
It is assumed that the sweep is performed linearly from the low frequency region to the high frequency region, and that when the center frequency M of the ultrasonic vibrator 3, that is, the ultrasonic output becomes the highest, the application of the output to the ultrasonic vibrator 3 is stopped. I have. Generally, the center frequency M of the ultrasonic vibrator 3 is unique, and the center frequency M of the ultrasonic vibrator 3 is likely to vary. By setting an upper limit N (for example, 26 kHz) at which the ultrasonic output becomes the highest around the frequency M (for example, 25 kHz), the maximum sound pressure can always be generated even if the center frequency M varies. As a result, the threatening effect on animals can be dramatically increased.

FIGS. 19 and 20 show a case where a display unit 15 for displaying an operation during the operation of the ultrasonic transducer 3 is provided. Structures other than the display unit 15 are the same as those in FIG. 1, and only different points will be described. In this example, the housing 10
The LED 15a constituting the display unit 15 is installed on the back of the camera. The LED 15a is operated by a detection output from the infrared sensor 29, and displays the detection of the target object and also the output state of the power supply at the same time. With this display section 15, it is possible to confirm whether or not the animal intrusion prevention device 1 is operating, and the usability is improved.

In the above embodiment, pets such as dogs and cats have been described. Of course, the present invention can be widely used for repelling birds and animals.

[0030]

As described above, according to the first aspect of the present invention, there is provided an infrared sensor for detecting the invasion of an animal such as a dog and a cat, and a detection signal from the infrared sensor for preventing the invasion of the animal. In an animal intrusion prevention device in which an ultrasonic vibrator that emits intimidating ultrasonic waves is housed in a housing, a detection area changing means for making a detection area of an infrared sensor variable is provided.
Increase the detection area if you want to detect the invasion of an animal into a place that you want to detect according to the place of use such as outdoors, for example, a wide place, and narrow the detection area if you want to detect the invasion of an animal into a narrow place. By doing so, it becomes possible to deal with the case where only a specific place is to be detected, and the user can appropriately select the detection area of the infrared sensor according to the place of use.

According to the second aspect of the present invention, in addition to the effect of the first aspect, a radiation area varying means for varying an ultrasonic radiation area from the ultrasonic vibrator is provided. The ultrasonic radiation area is widened to threaten animals that have entered the place, and the ultrasonic radiation area is narrowed to threaten animals that have entered a narrow place. The threatening sound area can be appropriately selected by the user.

According to the third aspect of the present invention, in addition to the effect of the first aspect, the detection area of the infrared sensor and the ultrasonic radiation area from the ultrasonic vibrator can be respectively changed, so that the use area can be changed. The user can appropriately select the corresponding detection area of the infrared sensor and the ultrasonic emission area.

According to a fourth aspect of the present invention, in addition to the effect of the first aspect, the detection area changing means includes a plurality of openings having different opening areas for partially shielding the opening detection portion of the infrared sensor. By rotating the rotating body, any one of the openings having different opening areas can be disposed to face the opening detecting section, thereby easily switching the detection area of the infrared sensor. It becomes possible.

According to a fifth aspect of the present invention, in addition to the effect of the first aspect, the detection area changing means comprises an openable and closable shutter for changing the opening area of the opening detection portion of the infrared sensor. By opening and closing the shutter, the opening area of the opening detection unit can be changed,
This makes it possible to easily switch the detection area of the infrared sensor.

According to a sixth aspect of the present invention, in addition to the effect of the first aspect, the detection area changing means is disposed so as to be able to protrude and retract in front of the opening detection section of the infrared sensor, and the opening detection section is partially formed. Since the plate is made of a shielding plate, it can be easily switched to an arbitrary detection area by protruding and retracting the plate in front of the opening detection unit.

According to a seventh aspect of the present invention, in addition to the effect of the second aspect, the radiation area varying means can vary the ultrasonic radiation area by switching the intensity of the ultrasonic output from the ultrasonic transducer. Therefore, by increasing the ultrasonic output to threaten animals that have entered a wide area, and by weakening the ultrasonic output to threaten animals that have entered a narrow area, the ultrasonic radiation area can be reduced. It is possible to easily switch to the ultrasonic radiation area.

According to an eighth aspect of the present invention, in addition to the effect of the third aspect, a plurality of openings having different opening areas for partially shielding the opening detecting portion are provided in front of the opening detecting portion of the infrared sensor. Since the rotating body having the section is rotatably arranged, the detection area of the infrared sensor can be changed, and the ultrasonic emission area from the ultrasonic transducer can be changed by switching the intensity of the ultrasonic output, so that the rotating body The user can easily switch between the detection area of the infrared sensor and the ultrasonic emission area according to the place of use by the rotation operation and the operation of switching the strength of the ultrasonic output.

According to a ninth aspect of the present invention, in addition to the effect of the third aspect, in addition to the effect of the third aspect, a shutter for changing the opening area of the opening detecting section can be opened and closed in front of the opening detecting section of the infrared sensor. It is possible to change the detection area of the infrared sensor by arranging and to change the ultrasonic emission area from the ultrasonic vibrator by switching the intensity of the ultrasonic output, so the opening and closing operation of the shutter and the intensity switching operation of the ultrasonic output Thus, the user can easily switch between the detection area of the infrared sensor and the ultrasonic emission area according to the place of use.

According to a tenth aspect of the present invention, in addition to the effect of the third aspect, a plate having an opening for partially shielding the opening detecting portion is provided in front of the opening detecting portion of the infrared sensor. It is possible to change the detection area of the infrared sensor by arranging it freely and to change the ultrasonic emission area from the ultrasonic vibrator by switching the strength of the ultrasonic output. By the switching operation, the user can easily switch between the detection area of the infrared sensor and the ultrasonic radiation area according to the place of use.

According to an eleventh aspect of the present invention, in addition to the effect of the first aspect, the oscillator of the ultrasonic vibrator sweeps the driving frequency of the ultrasonic vibrator from a low frequency to a high frequency. Since the upper limit of the driving frequency is set near the center frequency of the ultrasonic vibrator, even if the center frequency of the ultrasonic vibrator fluctuates, the driving of the ultrasonic vibrator is close to the center frequency. Since the upper limit of the frequency is present, it is possible to always generate the maximum sound pressure, which is more effective in preventing animal invasion.

According to the twelfth aspect of the present invention, in addition to the effect of the first aspect, the display unit for displaying the operation during the operation of the ultrasonic vibrator is provided. It is possible to confirm whether or not is operating.

[Brief description of the drawings]

FIG. 1 is a sectional view showing an example of an embodiment of the present invention.

2 (a) is a plan view of the rotating body of the above, FIG. 2 (b) is a side view as viewed from arrow C in FIG. 2 (a), and FIG. 2 (c) is a side view as viewed from arrow d in FIG. is there.

3 (a) is a plan view of the same housing, and FIG. 3 (b) is a front view.

FIG. 4 is a control circuit diagram of the same.

FIG. 5 is a cross-sectional view of another embodiment.

FIG. 6A is a plan view illustrating opening and closing of the shutter, FIG. 6B is a plan view of the shutter, and FIG. 6C is a side view.

7A is a front view showing a state in which the shutter is narrowly closed, and FIG. 7B is a front view showing a state in which the shutter is widely opened.

FIG. 8 is a sectional view of still another embodiment.

FIG. 9A is a plan view of the plate, and FIG. 9B is a side view of the plate.

FIG. 10A is a plan view showing a state where the plate is flipped up, and FIG. 10B is a front view showing a state where the plate is lowered to the front.

11A is a cross-sectional view of still another embodiment, and FIG.
Is a plan view, and (c) is a front view.

12A and 12B show a changeover switch of the above, (a) is a circuit diagram of an on / off switch, (b) is a circuit diagram of a control switch,
(C) is an explanatory view of a switch-off mode, a weak mode, and a strong mode.

13A is a cross-sectional view of still another embodiment, and FIG.
Is a plan view, and (c) is a front view.

14A is a cross-sectional view of still another embodiment, and FIG.
Is a plan view, and (c) is a front view.

FIG. 15A is a sectional view of still another embodiment, and FIG.
Is a plan view, and (c) is a front view.

FIG. 16 is a graph showing output sound pressure characteristics of the ultrasonic transducer of the above.

FIG. 17 is a graph showing a frequency variable pattern of the oscillator of the ultrasonic transducer of the above.

18A is a cross-sectional view of still another embodiment, and FIG.
Is a plan view, and (c) is a front view.

FIG. 19 is a control circuit diagram of the above.

FIG. 20 is an explanatory diagram in the case where the above animal intrusion prevention device is used outdoors.

FIG. 21 is an explanatory diagram when the animal intrusion prevention device is used indoors.

FIG. 22 is a control circuit diagram of a conventional animal invasion prevention device.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Animal intrusion prevention device 2 Infrared sensor 3 Ultrasonic vibrator 4 Detection area variable means 5 Rotating body 5a, 5b Opening 6 Shutter 7 Plate 7a Opening 8 Radiation area variable means 10 Housing 11 Opening detection part 12 Opening radiation part 15 Display Part 21 Oscillator 27 Changeover switch A Detection area of infrared sensor B Ultrasonic radiation area

Claims (12)

[Claims] 1. A housing comprising: an infrared sensor for detecting the invasion of an animal such as a dog and a cat; and an ultrasonic vibrator for emitting an intimidating ultrasonic wave for preventing the invasion of the animal based on a detection signal from the infrared sensor. An animal intrusion prevention device, comprising: a detection area changing means for changing a detection area of an infrared sensor. 2. The animal intrusion prevention device according to claim 1, further comprising a radiation area changing means for changing an ultrasonic radiation area from the ultrasonic transducer. 3. The animal intrusion prevention device according to claim 1, wherein a detection area of the infrared sensor and an ultrasonic radiation area from the ultrasonic transducer are variable. 4. The animal invader according to claim 1, wherein the detection area changing means comprises a rotating body having a plurality of openings having different opening areas for partially shielding the opening detection portion of the infrared sensor. Prevention device. 5. The animal intrusion prevention device according to claim 1, wherein the detection area changing means comprises an openable and closable shutter for changing an opening area of the opening detection portion of the infrared sensor. 6. The animal invader according to claim 1, wherein the detection area changing means comprises a plate which is disposed so as to be able to protrude and retract in front of the opening detection section of the infrared sensor and partially shields the opening detection section. Prevention device. 7. The animal intrusion prevention device according to claim 2, wherein the radiation area changing means makes the ultrasonic radiation area variable by switching the intensity of the ultrasonic output from the ultrasonic transducer. apparatus. 8. In front of an opening detection section of an infrared sensor,
A rotator having a plurality of openings having different opening areas for partially shielding the opening detection section is rotatably arranged to make the detection area of the infrared sensor variable, and to radiate ultrasonic waves from the ultrasonic transducer. The animal intrusion prevention device according to claim 3, wherein the area can be changed by switching the intensity of the ultrasonic output. 9. In front of an opening detection section of an infrared sensor,
A shutter for changing the opening area of the opening detection unit is freely openable and closable so that the detection area of the infrared sensor can be changed, and the ultrasonic radiation area from the ultrasonic transducer is switched by the intensity of the ultrasonic output. The animal intrusion prevention device according to claim 3, wherein the device is variable. 10. A plate that partially covers the opening detection unit is provided in front of the opening detection unit of the infrared sensor so as to be able to protrude and retract, so that the detection area of the infrared sensor can be changed, and the ultrasonic wave from the ultrasonic vibrator. 4. The animal intrusion prevention device according to claim 3, wherein the radiation area can be changed by switching the intensity of the ultrasonic output. 11. An oscillator for an ultrasonic vibrator sweeps the driving frequency of an ultrasonic vibrator from a low frequency to a high frequency, and sets an upper limit value of the driving frequency near a center frequency of the ultrasonic vibrator. The animal intrusion prevention device according to claim 1, wherein: 12. The animal intrusion prevention device according to claim 1, further comprising a display unit for displaying an operation during operation of the ultrasonic transducer.