JPS62123699A - Cockroach eliminator - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION [Technical Field] The present invention relates to a cockroach repellent device that repels cockroaches by applying an electric shock to them.

[Background Art] Conventionally, in cockroach control devices that repel cockroaches by applying electric shocks of this type, a pair of barrier electrodes that apply electric shocks to cockroaches are simply equipped with dry batteries (DC18
For example, if an infant places a wet hand on one of the barrier electrodes and licks it with his tongue, even though the voltage is 18V DC, several -A may flow into the human body. There was a problem that it was dangerous. In addition, there is a problem that if soy sauce or the like remains on the barrier electrode, the voltage of the barrier electrode decreases without realizing it, allowing cockroaches to pass through and accelerating the consumption of dry batteries. has been provided in view of the above-mentioned points, and the purpose is to provide a cockroach repellent device that does not have a negative effect on the human body and that reliably shocks cockroaches and reliably exterminates cockroaches. be.

[Disclosure of the Invention] (Structure) The present invention has a pair of barrier electrodes to which a voltage is applied with a predetermined interval, and when a cockroach comes into contact between the barrier electrodes, a current is passed from the barrier electrode to the cockroach. In a cockroach control device that controls cockroaches, a protective resistor is provided between the power source and the barrier electrode to prevent a current exceeding a predetermined current that is harmless to the human body between the barrier electrodes, and a voltage drop across the protective resistor is detected. However, the present invention is characterized in that, when a voltage drop exceeding a predetermined value is detected, an alarm means is provided which displays this state and cuts off the current supply to the barrier electrode.

(Example) Embodiments of the present invention will be described below with reference to the drawings.

FIG. 3 shows a perspective view of the main body 1 of the cockroach control device, FIG. 2 shows a block diagram, and FIG. 1 shows a block circuit diagram. Plug 3 connected to the outlet
AClooV power is supplied from AClooV, and this voltage is input to an isolated step-down DC stabilized power supply 5 with a noise filter via a power switch SW1 and a fuse F1.

A series circuit including a contact r1 of a relay R, a current-limiting resistor R1, and a plurality of display elements 4 such as neon tubes connected in parallel is connected to the input side of the stabilized power supply 5 in parallel.

The display element 4 emits green light and, as will be described later, displays that the device is on guard against cockroaches. The output side of the stabilized power supply 5 is connected to electrode terminals 7 and 8 via a fuse F2, a normally closed contact r3 of a relay R, and a protective resistor Ro=Ro' (only R8 is shown in FIG. 2 for convenience). In addition, a light emitting diode 6 for power display, which emits yellow light, is connected in parallel via a fuse F2 and a current limiting resistor R2.

A pair of barrier electrodes 2, 2 arranged at a predetermined interval are connected between the electrode terminals 7, 8, and when a cockroach comes into contact with the barrier electrodes 2, 2, the stabilized power source 5 is activated.
A current is caused to flow from the protective resistor Ro = Ro'. This current value is set as follows. That is, it is generally said that there is no harm to the human body at 0.5 mA or less.

Several microamperes to several tens of microamperes are sufficient to shock cockroaches. Therefore, it is ensured that no more than 0.5 mA (500 μA) flows between the barrier electrodes 2° and 2.
If lIRo and Ro' are interposed and the output of the stabilized power supply 5 is, for example, DC 18V, the value becomes 36Ω.

The voltages on both sides of the protective resistor R8tRo' are input to a voltage (or current) discrimination circuit 9 and a voltage discrimination circuit 10, respectively, and the voltage discrimination circuit 9 detects the voltage drop that occurs when a cockroach rides on the barrier electrodes 2, 2 open. The system detects cockroaches and identifies cockroaches. The other voltage determining circuit 10 detects a voltage drop that occurs when the barrier electrodes 2, 2 are short-circuited, and determines that the barrier electrodes 2.2 are short-circuited.

The output of the voltage discrimination circuit 9 is sent to the amplifier 1 via the logic circuit 11.
2 and input to the audio chip control circuit 14 and the counter control circuit 16, respectively. The audio chip control circuit 14 outputs melodies and insect pseudo-sounds (
For example, the pseudo-sound of a cricket or the cry of a cockroach (imaginary)
) to alert people that cockroaches have attacked the United States. A melody selection switch 14a is provided for selecting an arbitrary melody or pseudo-sound. Also,
Since the user can select whether or not to drive the audio chip control circuit 14, a melody switch SW2 is provided. The counter control circuit 16 is
The device counts the number of cockroaches that have come into contact with the barrier electrodes 2, 2, that is, the number of cockroach attacks, and the count is displayed on a counter display 18. A reset button 17 for clearing the number displayed on the counter display 18 is also provided. The output of the other voltage discrimination circuit 10 is amplified by an amplifier 13 to drive a relay R. The normally closed contact r of this relay R is connected in series with the display element 4 as described above, and the normally open contact r2 is connected to the circuit 19 when there is a short circuit between the barrier electrodes 2 and 2. The light emitting diode 20 is connected in series to a series circuit with a light emitting diode 20 that emits red light. Further, as shown by the two-dot chain line in the figure, the oscillation circuit 21 is driven via the short-circuit alarm on/off switch SW3, and the output of the oscillation circuit 21 drives the sound generator 22 made of an electrostrictive vibrator or the like. Auditory notification may also be provided.

In FIG. 3, a display section 2 consisting of a plurality of display elements 4 is shown.
3 is arranged at the upper part of the front surface of the main body 1, and this display section 23
Below, from the left, there is a power switch SW1, a yellow light emitting diode 6 for power display, a fuse F1, a red light emitting diode 20 that displays when the barrier electrode 2.2 is short-circuited, a counter display 18, and a reset button. 17, a speaker 15, a melody on/off switch SW2, etc. are arranged. Electrode terminals 7 and 8 are arranged on the side surface of the main body 1.

Next, the operation will be explained. When the power switch SW1 is turned on in a state other than a power outage, and in a normal state where there are no cockroaches etc. on the barrier electrodes 2, 2, no current flows between the barrier electrodes 2, 2, so the protection resistors Ro and Ro+ are There is no voltage drop, no signal is input to the voltage discrimination circuits 9 and 10, and the circuits after the voltage discrimination circuits 9 and 10 do not operate. Therefore, in this normal state, since the normally closed contact r of the relay R is closed, power is supplied to each display element 4.
The display section 23 shown in Fig. 3 lights up, indicating "Cockroach alert".
Display the characters. Since the display on the display unit 23 is displayed in green, it is psychologically safe, and
The message ``Cockroach alert'' is displayed, giving an added sense of security. Next, when a cockroach rides on the barrier electrodes 2, 2, a minute current flows through the cockroach and into the barrier electrodes 2.2. The resistance between the cockroach's legs is approximately in MΩ, and the voltage (or current) discrimination circuit 9
is designed to operate with a minute current (minute voltage drop - voltage at point B). In this embodiment, the voltage discrimination circuit 9 is D
It operates with a voltage drop of approximately 20% from C18V to 14.5V or less. Therefore, the voltage discrimination circuit 9 detects this minute voltage (or minute current), and its output is amplified by the amplifier 12 via the logic circuit 11 and sent to the audio chip control circuit 14 and the counter control circuit 16. . Then, the audio chip control circuit 14 sounds a melody or a pseudo sound as a cockroach alarm through the speaker 15 to notify of a cockroach attack. Further, the counter control circuit 16 counts the number of cockroach attacks and displays the counted number on the counter display 18. In addition, in this state, relay R is not driven and power is being supplied, so power is also being supplied to display element 4, and display section 23 on the front of main body 1 indicates that cockroaches are being detected as described above. It is displayed that it is. Next, when the barrier electrodes 2, 2 get wet with water or soy sauce and short-circuit, a large current regulated by the protective resistors R,, R0' flows, and the voltage drop due to this current is reduced to A.
The detection level is input to the voltage discrimination circuit 10. It should be noted that the input of the voltage discrimination circuit 10 (including half-short circuits) is designed to work when the input voltage is 12 V DC or less (the effect on cockroaches is reduced below 10 V DC). The output of voltage discrimination circuit 10 is amplified by amplifier 13 and drives relay R. When the relay R is driven, the contact rltr2 is reversed, and when the contact r1 is reversed and opened, power is not supplied to the display element 4, so the display on the display unit 23 is turned off.

At the same time, contact r2 is reversed and closed, so 7 ritsu force -
Power is supplied to the light emitting diode 20 via the circuit 19, and the light emitting diode 20 flashes in response to the output of the circuit 19, indicating that the barrier electrode 2.2 is short-circuited. Further, the sound generator 22 will also notify the user with a sound. Furthermore, when a short circuit between the barrier electrodes 2, 2 is detected, a normally closed liquid in the relay R is connected between the fuse F2 and the protective resistor R8, R,' in order to cut off the power supply to the barrier electrodes 2, 2. When Ars is inserted and connected, and a large current flows through the barrier electrodes 2, 2 due to a short circuit, etc., when the relay R is driven as described above, the contact r3 is reversed and opened, and the barrier electrodes 2, 2 We are trying to stop power supply to. Note that an alarm means is constituted by the voltage discrimination circuit 10, relay R1 contact r0, and the like.

[Effect of the invention 1] As described above, the present invention has a pair of barrier electrodes to which a voltage is applied at a predetermined interval, and when a cockroach comes into contact between the barrier electrodes, a current is applied from the barrier electrode to the cockroach. In the cockroach control device that controls cockroaches by flushing,
A protective resistor is provided between the power source and the barrier electrode to block current exceeding a predetermined current that is not harmful to the human body between the barrier electrodes, and a voltage drop across the protective resistor is detected to detect a voltage drop greater than the predetermined voltage drop. Since this device is equipped with an alarm means that displays this state and disconnects the current supply to the barrier electrode, even if an infant or the like touches the barrier electrode, the current is regulated by the protective resistor. Since it detects the voltage drop caused by the protective resistor and cuts off the current to the barrier electrode, it is extremely safe for the human body, and even if a cockroach comes into contact with it, no current will flow to the human body. Therefore, the barrier electrode is energized to reliably shock the cockroaches, thereby achieving the effect of controlling the cockroaches.Furthermore, the structure is such that the voltage drop across the protective resistor is detected and the alarm means is activated. Therefore, it can be easily configured in terms of circuitry, and by notifying the user that the alarm is working, cockroaches can easily pass through the door without the user knowing. It has an unprecedented effect.

[Brief explanation of drawings]

FIG. 1 is a block circuit diagram of a cockroach control device according to an embodiment of the present invention, FIG. 2 is a block diagram of the same, and FIG. 3 is a perspective view of the main body of the cockroach control device. 2 is a barrier electrode, and R,, R,,' are protection resistors.

Claims (1)

[Claims] (1) In a cockroach control device that has a pair of barrier electrodes to which a voltage is applied at a predetermined interval, and when a cockroach comes into contact between the barrier electrodes, current is passed from the barrier electrodes to the cockroaches to control cockroaches. A protective resistor is provided between the power source and the barrier electrode to block current exceeding a predetermined current that is not harmful to the human body between the barrier electrodes, and a voltage drop across the protective resistor is detected, and a voltage drop exceeding the predetermined voltage is detected. 1. A cockroach control device characterized by being provided with an alarm means that displays this state and cuts off current supply to the barrier electrode when the cockroach control occurs.