KR930010551B1 - Apparatus for generating negative ion - Google Patents

Abstract

The negative ion generator includes a first and a second input line (VCCL,GNDL) inputting a low DC voltage, a first output winding coil (NA) having an AC voltage input winding coil (NB), a high voltage transformer (HVT1) having a second output winding coil (NC) outputting a high voltage boosted from an input voltage, a transdriver supplying the low DC voltage to the NB and cutting off it, a transdriver control part (14) supplying a release puls to be output out of the NA to a control terminal (CTL), and a rectifying part (16) rectifying a high voltage to a negative high voltage and inputting it to the discharger (10).

Description

Negative ion generator

1 is a circuit diagram of a conventional negative ion generating device.

2 is a circuit diagram of an anion generator according to the present invention.

3 is a circuit diagram of an anion generator of a second embodiment according to the present invention.

4 is a circuit diagram of a negative ion generating device of a third embodiment according to the present invention.

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a negative ion generator, and more particularly to a negative ion generating device that generates negative ions by generating high negative voltage as a low DC voltage.

In general, the negative ion generator refers to the discharge of negative ions into the air by charging ions in the air to negative high voltages (＂-＂ high voltages). As is already well known, air has electric yin and yang to form ions. In other words, there are small particles in the air called ions, and positive ions are called cations and negative ions are called anions.

Well, the balance of cations like this has a very important effect on the metabolism of life. For example, an increase in the number of cations in the air causes drowsiness and causes dysfunction of the body such as tension and anxiety, headaches and drowsiness. On the contrary, an increase in the number of negative ions energizes the body.

Looking at the effect of negative, positive ions in the air as shown in Table 1 below.

TABLE 1

In the anion test results at home and abroad, it was found that a pleasant feeling can be felt when the anion number is 2000-4000 per C㎥ of air in the air. It is investigated. The anion generator usually discharges negative ions by charging a DC voltage of -4KV to -6KV in air. Such anion generating device has a discharger that maintains a certain distance from the ground plate by making a negative electrode having a sharp pin structure with ground of carbon or copper material. have. When a direct current high voltage of -4KV to -6KV is applied between the ground and the negative electrode of the discharger, current flows into the air through the ground plate and the negative electrode, and negative ions in the air are charged to negative charge, thereby generating negative ions.

In order to emit a large amount of negative charge (anion) in the above manner, high negative voltage (-4KV to -6KV) is required. 1 is a circuit diagram of a conventional anion generating device, and is a secondary voltage of a high voltage transformer (HVT) for boosting and outputting a commercial AC voltage (approximately 110VAC-220VAC) to 2KV-3KV, and the high voltage transformer (HVT). A negative voltage rectifying circuit connected to the side for rectifying and outputting double voltage rectification at a high negative voltage and a discharger 10 generating negative ions by the high negative voltage output from the negative voltage rectifying circuit.

At this time, the negative voltage rectifying circuit of FIG. 1 includes two capacitors C2 and C3 and two rectifying diodes D1 and D2, and an intermediate tap of the secondary winding of the high voltage transformer HVT. A capacitor c1 connected between the center tap and ground serves to raise the output of the secondary winding.

When the commercial AC voltage is input to the primary side winding of the high voltage transformer HVT, the boosted voltage corresponding to the primary side winding and the secondary side winding of the high voltage transformer HVT is output to both ends of the secondary side winding.

When the voltage output from both ends of the secondary winding is a positive period voltage, the voltage output from the terminal A of the secondary winding of the high voltage transformer HVT is the anode of the capacitor C2 and the diode D1. And flows through the current loop to the terminal B of the cathode secondary winding. At this time, the instantaneous voltage of the boosted high voltage is charged at both ends of the capacitor C2.

When the high voltage of the negative (-) period is output from the secondary winding of the high voltage transformer HVT, the voltage is added to the voltage charged at both terminals of the capacitor C2 and output from the terminal B of the secondary winding. A current loop is formed through the anode C of the capacitor C3, the rectifying diode C2, the capacitor C2, and the terminal A of the secondary winding, and is output to both ends of the capacitor C3.

The DC treble (-) voltage is output to both terminals of the capacitor C3 by the repetitive operation of the double voltage rectification as described above.

DC high-voltage (-) voltage of the capacitor (C3) is applied to both ends of the discharger 10, at which time high pressure current flows to the negative electrode 11 spaced apart from the ground plate 12 in the discharger 10 by a predetermined interval Anion is generated as the positive charge in the charge is negatively charged.

However, the circuit of the conventional negative ion generating device operated as described above is to directly boost the commercial AC voltage to obtain a high DC negative voltage, which causes a problem of miniaturization by increasing the volume of the high voltage transformer (HVT).

In addition, the direct AC voltage is directly boosted to generate a high DC negative voltage, which consumes a lot of power and cannot operate at a DC low voltage.

In the conventional circuit as shown in FIG. 1, foreign matter such as dust in the air is caught in the discharge load between the ground plate 12 and the negative electrode 11 of the discharger 10, and the arc (ARC) discharge is performed for a predetermined time (4 seconds). -5)) or the mechanical failure caused the discharge rod to continuously supply high-voltage output in the event of a short circuit, causing system safety problems.

Accordingly, an object of the present invention is to provide a negative ion generating device for generating negative ions by generating a high direct current negative voltage as a low direct current voltage.

Another object of the present invention is to provide a negative ion generating device that monitors an anion generating state and outputs an alarm signal (message) while protecting the system by shutting off the high voltage output when the abnormal state is maintained for a predetermined time or more.

Hereinafter, the present invention will be described in detail with reference to the accompanying drawings.

2 is a circuit diagram of a generator according to the present invention, which has a first and a second input line VCCL (GNDL) for inputting a low DC voltage DC, an AC voltage input winding NB, and the primary winding. A high voltage transformer HVT1 having a first output winding NA for outputting a release pulse opposite in phase to the input voltage in response to a voltage input of the second output voltage, and a second output winding NC for boosting and outputting the input voltage to a high voltage. And a first response switching to an input of a low DC voltage input to the first input line VCCL to supply the low DC voltage to an input winding NB of the high voltage transformer HVT1, and a control terminal CTL. A delay is applied to the release driver output from the first output winding (NA) of the transformer 12 and the high voltage transformer (HVT1) to cut off the supplied low DC voltage by switching a second response to the release pulse input to To the control terminal (CTL) Is a rectifier 16 for rectifying the high voltage output from the second output winding NC of the high voltage transformer HVT1 with a DC high-voltage (-) voltage and inputting the voltage to the discharger 10. And a discharger 10 which generates negative ions in response to the input of the DC treble (-) voltage output from

In the configuration of FIG. 2, the transformer driver 12 is connected between the first input line VCCL and the input terminal L2 of the input winding NB of the high voltage transformer HVT1 to input the first switching control signal. Switching the first response to the low DC voltage inputted to the first input line VCCL to the input winding NB, and switching the second response to the input of the release pulse to cut off the output of the low DC voltage. A resistor R11 and a capacitor C13 connected in parallel between the switching transistor Q11 and the first input line VCCL and the base of the switching transistor Q11 to provide a base voltage as a first switching control signal. And a resistor R12 and a diode D11 connected in series between the emitter and the base of the switching transistor Q11.

The transformer driver control unit 14 includes a resistor R3 and a capacitor C12 connected between the output terminal L1 of the first output winding NA of the high voltage transformer HVT1 and the base of the switching transistor Q11. And a diode D12 connected in parallel with the resistor R13. The rectifier 16 includes capacitors C14 and C15 and two rectifier diodes D13 and D14.

Reference numeral C11 in the configuration of FIG. 2 is a capacitor for bypassing noise of a DC power input to the first and second input lines VCCL (GNDL) as a capacitor and stabilizing the power.

3 is a circuit diagram of another embodiment of the anion generating device according to the present invention, which has a function of controlling the DC high-voltage (-) voltage generation by monitoring the discharge state of the discharger 10, that is, the negative ion generating device, the alarm signal It is supposed to output.

In view of the configuration, the voltage detecting capacitor C16 and the resistor R14 are paralleled between the second terminal L5 of the second output winding NC of the high voltage transformer HVT1 and the ground in the above-described configuration of FIG. An overload detection unit 18 is connected to detect an overpower of the rectifier 16, and a transistor Q13 and a constant voltage diode ZD1 are connected between the first input line VCCL and ground, and the overload detector An alarm generator 20 which switches in response to an output of 18 to generate an alarm signal AS, and is connected between the first input line VCCL and the second input line GNDL, wherein the overload detector And a release signal generator 22 for providing a release signal to the transformer driver 12 in response to the overload detection signal output of 18 to stop the generation of high voltage.

In the configuration of FIG. 3, the release signal generator 22 may include a diode D15, a transistor Q12, and a resistor R17 between the base of the transistor Q11 and the second input line GNDL in the transformer driver 10. ) Is connected in series, and is switched by a first switching signal to bypass and cut off the base signal of the switching transistor Q11, and an output terminal of the overload detection unit 18 and the second input. A diode D16 and a capacitor C15 are connected between the lines GNDL, a delay unit for delaying an input overload detection signal by a predetermined delay and outputting the same through the diaak TD, and the first input line VCCL and the first input line VCCL. The resistor R15, the silicon control rectifier SCR, and the resistor R16 are connected in series between the second input line GNDL, and the first cutoff is performed in response to an overload detection signal output from the delay unit by a predetermined delay. Blocking signal ball supplying the first switching signal to the It is composed of a.

In the above-described configuration of FIGS. 2 and 3, all configurations except the configuration of the discharger 10 correspond to a high-negative voltage generator for generating negative ions.

FIG. 4 is a circuit diagram of the negative ion generating device of the third embodiment applied to the circuit of FIG. 3, and includes a regulator 24 for stabilizing and outputting the DC power supply voltage DCS and the DC voltage DCS to a predetermined level DC voltage. And a first switch S1 for generating anion generating on / off signal, a second switch S2 for generating a signal for setting an operation time of the negative ion generator, and an output voltage of the regulator 24. And outputting a start signal ST in response to the signal from the first switch S1, counting a switching input signal of the second switch S2 to set an operating time, and down counting the set operating time. And the MPU (Microprocessor) 26 which cuts off the output of the start signal upon completion and cuts off the start signal in response to the input of the alarm signal AS, and converts the DC power supply voltage DCS into the first voltage VCC. To respond to the input of the second voltage GND. The DC power supply voltage DCS is converted into a negative high voltage, and is output to only the ground plate and the negative electrode of the discharger 10, and an overload due to an abnormal state of the discharger 10 is detected and an alarm signal AS is detected. Between the high voltage generator 28 outputting the MPU 26 to the MPU 26, and the second voltage GND of the DC power supply voltage DCS and the second voltage input terminal GNDL of the high voltage generator 28. And a switch Q13 for switching the response to the start signal of the MPU 26 to input the second voltage GND to the high-pitched voltage generator 28.

An analog switch or the like may be used for the fourth switch Q13, and the NPN transistor is used herein.

In addition, although the circuit of FIG. 3 may be applied as it is, the high sound voltage generator 28 of FIG. 4 may operate in the same manner even if the release signal generator 22 of FIG. 3 is removed.

Hereinafter, the operation of the first, second and third embodiments of the anion generator according to the present invention will be described in detail.

[First Embodiment]

When the DC power supply voltage DC12V is input to the first and second input lines VCCL and GNDL, it is input to the base of the switching transistor Q11 through the resistor R11.

Accordingly, the switching transistor Q11 is turned on by the voltage input of the resistor R11, so that the voltage of the first input line VCCL is connected to the collector-emitter of the switching transistor Q11 through the high voltage transformer (Q11). It is input to the input terminal L2 of the input winding NB of HVT.

At this time, the current of the voltage input to the input terminal of the input winding (NB) flows to the second input line (GNDL) through the output terminal (L3) of the input winding, the current flow of the input winding (NB) A negative voltage opposite to the current phase of the input winding NB is organically output to both terminals L1 and L2 of the one output winding NA.

The negative pulse voltage output to the terminal L1 of the first output winding NA of the high voltage transformer HVT is input to the base of the switching transistor Q11 after a predetermined delay by the resistor and the capacitor C12. Accordingly, the base voltage of the switching transistor Q11 falls below the forward bias voltage, and thus the switching transistor Q11 is turned off in the turned on state.

The power input to the terminal 12 of the input winding NB of the high voltage transformer HVT is cut off by the turning-off of the switching transistor Q11. That is, a constant pulse voltage having a predetermined period is input to the input winding NB by on / off switching of the switching transistor Q11, and the phase of the input winding NB is opposite to that of the input winding NB in the first output winding NA. Negative pulse is output.

At this time, the voltage output from the first output winding NA of the high voltage transformer HVT1 is input to the base of the transistor Q11 after a predetermined delay by the resistor R13 and the capacitor C12.

Therefore, the switching transistor Q11 repeats the on / off switching by the time constant of the resistor R11, the capacitor C13, the time constant of the resistor R13, and the capacitor C12, and the on / off time (on / off time) is determined by the time constant described above.

When the pulse voltage of a predetermined period is continuously input to the input winding NB of the high voltage transformer HVT1 by the above operation, both terminals of the second output winding NC having the predetermined winding ratio with the input winding NB are provided. From L4 and L5, a boosted-induced pulsed voltage, i.e., an AC voltage, is output.

In the present invention, the coil is wound to have a winding ratio between the input winding NB and the second output winding NC such that the output voltage of the second output winding NC is at least 2KV-3KV.

The pulse voltage of 2KV-3KV output from the second output winding NC of the high voltage transformer HVT1 is rectified to the negative (-) DC voltage at the rectifier 16 and then the ground plate 12 of the discharger 10. It is input to the negative electrode 11. That is, when the output pulse waveform of the second output winding NC of the high voltage transformer HVT1 is positive (+) polarity, the voltage output from the terminal 14 of the second output winding NC is applied to the capacitor C4. After being charged, it flows through the anode-cathode of the diode D14 to the terminal L5 of the second output winding NC.

Next, when the output pulse waveform of both ends of the second output winding NC is a negative pulse, the voltage charged in the capacitor C14 and the added output are output from the terminal L5 of the second output winding NC. . At this time, the negative pulse voltage output from the terminal L5 of the second output winding NC flows to the terminal L4 through the anode-cathode and the capacitor C4 of the capacitor C5 and the diode D3. .

Accordingly, the negative voltage of 2KV-3KV output from the second output winding NC of the high voltage transformer HVT1 is charged at both ends of the capacitor C5.

The DC high-voltage (-) voltage charged in the capacitor C5 is input to the negative electrode 11 of the discharger 10, where the discharger 10 is charged with the negative electrode 11 and the positive electrode 12 to discharge negative ions into the atmosphere. Will be released.

As described above, the anion generator configured as shown in FIG. 2 converts a low DC voltage into an AC and outputs a voltage of 2KV-3KV as a small transformer, and rectifies a double voltage of the output of the small transformer so that a voltage of -2KV to -6KV is obtained. It can be seen that generates an anion by generating a.

Second Embodiment

A second embodiment will be described with reference to FIG.

In the second embodiment according to the present invention, the short state of the ground plate 12 and the negative electrode 11 in the discharger 10 and the open state of the distance between the ground plate 12 and the negative electrode 11 are too far, and the arc ARC ) When abnormal state occurs by discharge, it detects it and prevents voltage conversion and its output.

When the DC power supply (VCC: DC12V) is input to the first and second input lines VCCL and GNDL, the transformer driver 12, the transformer driver control unit 14, and the high voltage transformer HVT1 as described above in FIG. ), The DC treble (-) voltage is applied to the discharger 10 by the operation of the rectifier 16.

As described above, in the state in which the discharger 10 is applied with a DC high-voltage voltage and negative ions are released, foreign matter such as dust is trapped between the negative electrode 11 and the grounded 12, so that arc (ARC) discharge occurs for a certain time. If it lasts for about 5 to 5 seconds, the output of the rectifier 16 is overloaded. That is, the current of the cathode of the rectifying diode D14 is increased, which appears as a voltage across the resistor R14.

At this time, the capacitor C16 connected in parallel with the resistor R14 charges the voltage of the resistor R14 and delays the output to the base of the transistor Q13.

If the arc discharge of the discharger 10 lasts for a predetermined time and the charging voltage of the capacitor C16 becomes a predetermined level, the overload detection signal is output to the diode D16 of the base and release signal generator 22 of the transistor Q13. do. At this time, the transistor Q13 is turned on by the input of the overload detection signal to input the voltage of the first input line VCCL to the cathode of the zener diode ZD1.

Therefore, when the transistor Q13 is turned on, the constant voltage across the zener diode ZD1 is output as the alarm signal AS.

Meanwhile, the diode D16 inputting the overload detection signal output from the overload detection unit 18 inputs the overload detection signal to the diaak TD through the capacitor C15. In this case, the capacitor C15 charges the output of the diode D16 to delay a predetermined delay, and the reason for outputting a predetermined delay is to delay the operation of the silicon control rectifier SCR that blocks the operation of the transformer driver 18. . That is, to prevent high voltage output after a predetermined time when arc discharge occurs.

When the charging voltage of the capacitor C15 reaches a predetermined level, the silicon controlled rectifier SCR is input to the gate terminal through the diaak TD. At this time, the silicon controlled rectifier SCR is turned on, and thus the voltage across the resistor R16 is input to the base of the transistor Q12. The transistor Q12 is turned on by the turn-on of the silicon controlled rectifier SCR, and the base voltage of the switching transistor Q11 decreases below the forward bias voltage by the turn-on of the transistor Q12. To be turned off.

Therefore, when an abnormal operation of the discharger 10 occurs, the alarm signal AS is output and at the same time, the switching operation of the transistor Q11 is stopped by the operation of the release signal generator 22 to block the output of high voltage. To protect the circuit.

The operation of the alarm in the abnormal state and the interruption of the high voltage generation are the same even when the negative electrode 11 of the discharger 10 and the ground plate 12 are short-circuited by mechanical defects.

In this case, the alarm signal AS output by the operation process may be used as an alarm sound generation signal or other purposes.

In order to recover after the occurrence of the high voltage due to the abnormal state, it is possible to recover by turning off the power of the first input line VCCL or the second input line GNDL.

As described above, the second embodiment of the present invention can stabilize the system by supplying a DC high-voltage (-) voltage only when the discharger 10 generating negative ions is normal.

Third Embodiment

In the third embodiment according to the present invention, the control of the operation DC power supply voltage (CD: 12V) input to the first and second input lines VCCL (GNDL) of the high sound voltage generator of the second embodiment shown in FIG. And, when the high voltage generation of the alarm signal generator by the abnormal detection of the system shows the relationship to recover it.

The high-voltage voltage generator 28 shown in FIG. 4 has a configuration except for the discharger 10 in FIG.

When the user presses the first switch S1, it is input to the input port RB7 of the MPU 26. At this time, the MPU 26 outputs an operation indication message and a start signal ST according to the input frequency of the logic high voltage input to the input port RB7. Outputs the start signal ST to the output ports RB0-RB5 and RA1 and inputs it to the base of the transistor Q13, and outputs an operation stop indication message and a low level start signal ST when the even input is received. do.

The MPU 16 operated as described above scans the input signal of the input port RB6 at predetermined intervals to check the input of the logic high signal. At this time, when the logic high voltage pulse signal is input to the input port RB6, it is counted, and when it is no longer input, it is stored in the internal memory area and the operation display period is output to the output ports RB0-RB5.

For example, when the first switch S2 is pressed once and one pulse is input, an indication message indicating that negative ions are generated for one hour is output to the display unit 32 and down counted. The display unit 32 for inputting a display message output from the MPU 26 displays an operation state and an operation time.

On the other hand, the transistor Q11 which inputs the start signal ST output from the output port RA1 of the MPU 26 is switched in response to the start signal ST in the “high” state.

When the transistor Q13 is turned on, the second input line GNDL of the high voltage generator 28 is connected to ground through the collector-emitter of the transistor Q13. At this time, the DC voltage Vcc of the DC power supply voltage DCS is input to the treble (−) voltage generator 28 through the first and second input lines VCC (GNDL).

Accordingly, the high voltage generator 28 converts the input low DC voltage into DC high voltage (−3 KV to −6 KV) as described above with reference to FIG. 3 to form the negative electrode 11 and the ground plate in the discharger 10. Output to (12) to generate negative ions.

If an abnormal phenomenon occurs as described in FIG. 3 while negative ions are released from the discharger 10 by the above operation, the high sound voltage generator 28 outputs an alarm signal AS as described above to output the MPU 26. At the same time, input to input port (RA0) and stop the generation of high negative voltage to stop the generation of negative ions.

At this time, the MPU 26 which inputs the alarm signal AS output from the high-voltage voltage generator 28 outputs the start signal ST from logic high to low and simultaneously outputs a system error message. The display unit 32 outputs the abnormal state.

At this time, the transistor Q13 for inputting the start signal ST of the low is turned off. Therefore, when the alarm signal AS is output from the high sound voltage generator 28, the low DC power supply voltage DCS input to the high sound voltage generator 28 is blocked. When the user monitors an error message of the indicator 32 and removes foreign substances between the negative electrode 11 and the ground plate 12 in the discharger 10 or removes an abnormality of the system, and then presses the first switch S1, the MPU Numeral 26 outputs a start signal ST in a high state in response to a signal obtained by pressing the first switch S1. At this time, the transistor Q13 for inputting the start signal ST is turned on as described above, thereby restoring the output blocking state of the high-voltage voltage generator 28 to remove negative ions.

As described above, the present invention can generate negative ions in a light and simple system by generating a high-negative DC voltage as a low direct current voltage, and monitor the release state of the negative ions to cut off the high pressure state when an abnormal condition occurs to prevent damage to the system. There is an advantage that can be prevented.

Claims (11)

In the negative ion generating device having a discharger (10) which charges and discharges positive ions in air by negative ions by input of high direct current negative voltage, the first and second input lines (VCCL) for inputting a low direct current voltage (DC) (GNDL), an AC voltage input winding (NB), a first output winding (NA) that releases and outputs in phase opposite to the input voltage in response to the voltage pressure of the primary winding, and the input voltage at a high voltage. First response switching to a high voltage transformer HVT1 having a second output winding NC for boosting and outputting a low DC voltage inputted to the first input line VCCL, and the high voltage transformer HVT1. A trans triber 12 for supplying the low DC voltage to an input winding NB of the second circuit, and switching the second response to a release pulse input to the control terminal CTL to block the supplied low DC voltage; First output winding NA of voltage transformer HVT1 The high voltage output from the transformer driver control unit 14 and the second output winding NC of the high voltage transformer HV1 are provided to the control terminal CTL by delaying the release pulse output from Rectifying unit rectified by a DC high-voltage (-) voltage and input to the discharger (10) characterized in that the device is characterized in that. The transformer driver 12 of claim 1, wherein the transformer driver 12 is connected between the first input line VCCL and the input terminal 12 of the input winding NB of the high voltage transformer HVT1 to control the first switching control signal. A first response switching to input a low DC voltage input to the first input line (VCCL) to the input winding (NB), a second response switching to the input of the release switching to cut off the output of the low DC voltage A resistor R11 and a capacitor C13 connected in parallel between the transistor Q11 and the base of the first input line VCCL and the switching transistor Q11 to provide a base voltage as a first switching control signal; And a diode (D11) and a resistor (R2) connected in series between the emitter and the base of the switching transistor (Q11). The resistor R3 of claim 2, wherein the transformer driver controller 14 is connected between an output terminal L1 of the first output winding NA of the high voltage transformer HVT1 and a base of the switching transistor Q11. ) And a capacitor (C12) and a diode (D12) connected in parallel with the resistor (R13) to delay the output of the first output winding (NA) of the high voltage transformer (HVT1) by a predetermined delay. And switch off the transistor (Q11) by inputting it to the base. An anion generator having a discharger that charges and discharges positive ions in air by negative ions by input of a high direct current negative voltage, the first and second input lines (VCCL) (GNDL) for inputting a low direct current voltage (DC). And a first output winding (NA) having an AC voltage input winding (NB), the output of which is out of phase with the input voltage in response to the voltage input of the primary winding, and boosting the input voltage to a high voltage. An input winding of the high voltage transformer HVT1 by switching first to a high voltage transformer HVT1 having a second output winding NC to output, and a low DC voltage input to the first input line VCCL. A transformer driver 12 for supplying the low DC voltage to the NB, and switching the second DC response to the release inputted through the control terminal CTL to block the supplied low DC voltage; and the high voltage transformer HVT1. First output winding (NA) and phase A transformer driver 14 connected to a control terminal CTL and providing the control terminal CTL with a delay of a release pulse output from the first output winding NA, and the high voltage transformer HVT1. Rectifying unit 16 for rectifying the high voltage output from the second output winding (NC) of the DC into a DC high-minus (-) voltage and input it to the discharger 10, and the negative pulse voltage circulation of the rectifying unit (6) An overload detection unit 18 connected between the node and the second input line GNDL and converting an overcurrent of the rectifying unit 16 into a voltage to generate an overload detection signal at a predetermined level or more, and the first input line VCCL. ) Is connected between the ground and the ground, and generates an alarm signal AS by switching in response to the output of the overload detector 18, the first input line VCCL and the second input line. (GNDL), the overload detection unit 18 Negative ion generating apparatus as claimed in response to a load detection signal outputs a comprised of a release signal generating unit 22 to stop the high voltage generator to provide a release signal to the transformer driver 12. 5. The transformer driver 12 according to claim 4, wherein the transformer driver 12 is connected between the first input line VCCL and an input terminal L2 of the input winding NB of the high voltage transformer HVT1 to provide a first switching control signal. A first response switching to input a low DC voltage input to the first input line (VCCL) to the input winding (NB), a second response switching to the input of the release switching to cut off the output of the low DC voltage A resistor R11 and a capacitor C13 connected in parallel between the transistor Q11 and the base of the first input line VCCL and the switching transistor Q11 to provide a base voltage as a first switching control signal; And a diode (D11) and a resistor (R2) connected in series between the emitter and the base of the switching transistor (Q11). The resistor R3 of claim 5, wherein the transformer driver controller 14 is connected between an output terminal L1 of the first output winding NA of the high voltage transformer HVT1 and a base of the switching transistor Q11. ) And a capacitor (C12) and a diode (D12) connected in parallel to the resistor (R13), the first output winding (NA) of the high voltage transformer (HVT1) by a predetermined delay the output of the switching transistor (Q11) And switch off the transformer (Q11) by inputting it to the base. The overload detector 18 includes an overcurrent detecting voltage conversion resistor R16 and a capacitor C16 connected in parallel between the negative pulse voltage forward node of the rectifier 16 and the second input line GNDL. And output a charge voltage of a predetermined level as an overload detection signal. The method of claim 7, wherein the alarm signal generator 20 is a transistor (Q13) for switching in response to the input of the overload detection signal between the first input line (VCCL) and the second input line (GNDL), constant voltage diode And ZD1 is connected and configured. 9. The release signal generator 22 is connected between the base of the transistor Q11 in the transformer driver 12 and the second power supply input line GNDL, and a second switching signal. Is switched by the first blocking unit for bypassing and blocking the base signal of the switching transistor Q11 to the second power input line GNDL, between the output terminal of the overload detection unit 18 and the second input line. A delay unit configured to output an input overload detection signal with a predetermined delay and serially connected between the first input line VCCL and the second input line GNDL, and output a predetermined delay from the delay unit. And a blocking signal supply unit supplying a first switching signal to the first blocking unit in response to the overload detection signal. An anion generator having a discharger (10) which charges and discharges positive ions in air by negative ions by input of a high direct current negative voltage. A regulator 24 for stabilizing and outputting a DC voltage, a first switch S1 for generating an anion generating on / off signal, a second switching S2 for generating a signal for setting an operation time of the anion generator, It is operated by the output voltage of the regulator 24, and outputs a start signal (ST) in response to the signal from the first switching (S1), by counting the switching input signal of the second switch (S2) A control unit 26 for setting an operation time, down counting the set operation time to block output of the start signal upon completion, and blocking the start signal in response to the input of the alarm signal AS; (DCS) of The first voltage VCC and the second voltage GND are converted to a negative high voltage and output to the discharger 10. The overload due to an abnormal state of the discharger 10 is detected to generate an alarm signal AS. Between the high voltage generator 28 output to the control unit 26, the second voltage (GND) of the DC power supply voltage (DCS) and the second voltage input terminal (GNDL) of the high voltage generator 28. And a switch (Q13) for transmitting the second voltage (GND) to the treble voltage generator (28) by switching in response to a start signal of the control unit (26). The NPN of claim 10, wherein the switch Q13 has a collector connected to a second power supply line GNDL of the high voltage generator 28 and an emitter connected to a second voltage terminal of the power supply voltage DCS. Apparatus characterized in that the transistor.