KR200240097Y1 - Electronic Type Stabilizer of Fluoresent Lamp - Google Patents

Abstract

The present invention relates to an electronic fluorescent ballast.

The conventional ballast has a choke coil type, so it requires a preheating time at the time of lighting, the weight of the choke coil is heavy, and especially the power consumption in the choke coil is large, so that it is difficult to expect economical advantage.

In order to solve such a problem, an electronic ballast capable of momentary lighting and low power consumption has been developed, but the following problems have not been solved.

That is, most of the lights are installed on the ceiling, and they are turned on and off as a switch so as to be turned on and off. In order to easily identify the position of the switch among the switches used at this time in a dark place, When the electronic fluorescent lamp ballast is turned off by using these switches, the fluorescent lamps are repeatedly turned on and off repeatedly at constant intervals, resulting in severe environmental troubles and shortening the life of fluorescent lamps, resulting in economic loss There is an absurdity to be made.

The present invention relates to an electronic fluorescent lamp ballast that can extend the lifetime of a fluorescent lamp and eliminate environmental obstacles by eliminating the above-described problems, thereby improving the reliability and the economic advantage.

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to an electronic type stabilizer for a fluorescent lamp,

The present invention relates to an electronic fluorescent lamp ballast, and in general, a fluorescent lamp is a kind of discharge lamp, and a conventional ballast is accompanied by a fluorescent lamp circuit such as a start lamp and a low frequency choke coil for preheating filaments.

In such a fluorescent lamp circuit, since the filament inside the fluorescent lamp is preheated to start lighting, a preheating time is required, and in particular, weight and power waste due to the low frequency choke coil are increased.

Therefore, an electronic ballast has been developed that can be used to solve such an unreasonable time and minimize power consumption

However, in such an electronic ballast, the switch is turned off in a circuit used together with an input switch such as a neon tube, which is designed to easily identify the position of the switch in a dark state, There is a problem that it is impossible to have a convenient advantage in using the product due to an environmental disorder due to the occurrence of a blinking phenomenon by repeatedly lighting and turning off the lamp at a constant cycle and the economical loss is caused by shortening the life time of the fluorescent lamp It will be.

Therefore, the present invention for solving the above problems can significantly reduce the power consumption of the fluorescent lamp and eliminate the blinking phenomenon when the fluorescent lamp is turned off, thereby eliminating environmental obstacles and preventing the shortening of the life of the fluorescent lamp. And to provide economic advantages.

Fig. 1 is a circuit diagram showing an electronic fluorescent ballast of the present invention installed together with an ON switch of a neon tube.

DESCRIPTION OF THE REFERENCE NUMERALS

1: power supply unit, 2: trigger pulse generating unit,

3: oscillating portion, 4: overheat preventing portion,

5: driving unit, 31: first oscillation unit,

32: second oscillation part, D1-D4: bridge diode,

D5 to D17: Diode, R1 to R10: Resistance,

R: Current regulating component including resistors, C1 to C13: Capacitor,

L1, L2, L3: oscillating coil, L4: choke coil,

FL: Fluorescent lamp, TD: Diacid diode,

SW: Ion switch such as neon tube, N: Neon tube,

FIG. 1 illustrates the present invention for achieving the above object,

When the power is connected by switching the input switch (SW) to the terminal a, the full-wave rectification is performed by the bridge diodes D1 to D4 and supplied to the smoothing capacitors C1 and C2 and simultaneously supplied to the diodes D5 to D7 A power supply unit (1) configured to bypass a part of the power to minimize a current;

A capacitor C3 charged through a resistor R1 by a voltage supplied from the power supply unit 1 and a diacid diode TD generating a trigger pulse by being turned on when the capacitor C3 is charged In the apparatus including the trigger pulse generating section (2) configured,

A capacitor C4 charged by a voltage induced in the coil L1 and discharged when a voltage is applied to the coil L1 in the opposite direction, a capacitor C4 charged by a voltage induced in the coil L1, A first oscillation part 31 composed of a transistor Q1 which is turned on by the discharge voltage of the first transistor Q1; A coil L2 in which a voltage of an opposite polarity to the voltage is induced when a voltage is induced in the coil L1 and a coil L2 that is charged when a positive voltage is generated below the coil L2, And a transistor Q2 which is turned on by a discharge voltage of the capacitor C5 and outputs a predetermined current when the first and second oscillation parts 32 and 32 are turned on, An oscillating unit 3 including a coil L3 for positively feeding a current inputted when the transistor Q2 is turned on to the coils L1 and L2 of the first and second oscillating units 31 and 32, ;

An overheat preventing part 4 for preventing the heat generation of the transistor Q1 (Q2) due to the influence of fast or slow high-frequency and shock wave on the fundamental wave generated when the fluorescent lamp FL is driven;

A capacitor C13 for lighting the fluorescent lamp FL by charging and discharging through the coil L4 and the capacitor C12 by the voltage supplied from the oscillating unit 3 and a series circuit comprising the coil L4 capacitor C12 A driving unit 5 including a reverse bypass diode D16 (D17) for preventing overcharging by a resonance circuit;

.

Hereinafter, the operation of the present invention will be described with reference to FIG.

When the alternating voltage is supplied to the power supply unit 1 by switching the input switch SW such as the neon tube to the terminal a, full-wave rectification is performed by the bridge diodes D 1 to D 4 and smoothed by the smoothing capacitors C 1 and C 2, At this time, a part of the current flowing through the load is bypassed to the diode D7 → (D5) to be smoothed in the capacitors C1 and C2 connected together while minimizing the current loss, and then supplied to the trigger pulse generator 2 .

The voltage supplied from the power supply unit 1 is supplied to the capacitor C3 through the resistor R1 of the trigger pulse generating unit 2 and charged. When the capacitor C3 is charged, The voltage exceeds the limit voltage and the diacid diode TD is turned on and the capacitor C3 is discharged to generate the trigger pulse and the voltage applied to the diacid diode TD after the diacid diode TD is turned on When the voltage drops below the threshold voltage, the diathode (TD) is turned off and the capacitor (C3) is charged again from this point. When the voltage across the diathode (TD) exceeds the threshold voltage, Pulses are generated and supplied to the oscillating unit 3.

That is, as described above, the trigger pulse is continuously generated and supplied to turn on the fluorescent lamp FL while the diaphragm diode TD is on / off operated by the charging / discharging operation of the capacitor C3.

The trigger pulse signal generated in the die-disconnection diode TD is supplied to the coil L1 of the first oscillating unit 31 to induce a predetermined voltage. The current generated in the coil L1 is supplied to the diode D8 And is charged to the capacitor C4 through the capacitor C4.

When a voltage is applied to the coil L1, the coils L1 and L2 are wound so that a current having a polarity opposite to that of the coil L1 is wound. Therefore, when a positive voltage is applied to the lower side of the coil L1, (-) voltage is induced on the lower side of the coil L2 when the negative (-) voltage is induced on the lower side of the coil L1.

When a positive voltage is applied to the coil L2 of the second oscillating unit 32, a current generated in the coil L2 is charged into the capacitor C5 through the diode D9, (-) voltage is induced under the coil L1 of the first oscillating unit 31 when the positive voltage is applied to the lower side of the first oscillating unit 31 and the capacitor C4 of the first oscillating unit 31 is discharged. And the transistor Q1 is turned on.

The first oscillating unit 31 and the second oscillating unit 32 alternate with each other and when the capacitor C4 of the first oscillating unit 31 is charged, The capacitor C5 of the second oscillating unit 32 is turned on when the capacitor C5 is discharged to turn on the transistor Q2 and the capacitor C4 of the first oscillating unit 31 discharges to operate the transistor Q1, Is charged.

When the transistor Q2 of the second oscillating unit 32 is turned on, the current flows in the order of the coil L3, the coil L4, the fluorescent lamp FL, and the capacitor C13 in order to charge the capacitor C13 At this time, the coil L3 is wound so as to mutually induce the coils L1 and L2, and the current flowing in the coil L3 flows in a positive feedback to the coils L1 and L2 so that the current flows more and more. .

When the capacitor C13 is charged, the transistor Q1 of the first oscillation unit 31 is turned on and the capacitor C13 is discharged. The current flows from the capacitor C13 through the fluorescent lamp FL to the coil L4. The fluorescent lamp FL is turned on and the fluorescent lamp FL is normally turned on by the continuous oscillation of the first and second oscillating units 31 and 32. [ It will light up.

On the other hand, when the fluorescent lamp (FL) is lit, the circuit includes a trigger pulse wave other than the fundamental wave, a high frequency wave that is slower and faster than the fundamental wave, and a shock wave, thereby preventing the transistor Q1 The overheat prevention circuit 4 is provided.

On the other hand, the current for turning on the fluorescent lamp FL flows to charge and discharge the capacitor C13 and forms a series resonant circuit with the coil L4 and the capacitor C12, so that the capacitor C13 is overcharged and overcurrent flows The diodes D16 and D17 are connected to the capacitor C13 and bypassed to reduce the overcurrent to improve the stability.

In the meantime, the present electronic fluorescent lamp ballast which is turned on by the above-mentioned operation of the fluorescent lamp FL is generally used in connection with a switch for power saving. In this case, among the switches used at this time, The circuit when used in conjunction with the impression switch is illustrated in FIG. 1 and will be described in detail as follows.

Generally, the lamp including the electronic fluorescent ballast is installed on the ceiling side and the switch is installed on the wall side to turn it on and off so as to turn it on and off. When switching the input switch (SW) to the terminal a, the fluorescent lamp (FL) (N) is turned off, and the neon tube (N) is turned on and the fluorescent lamp (FL) is turned off when the terminal (b) is switched to the terminal b. The resistor R10 and the neon tube The current flowing through the neon tube N is charged to the capacitors C1 and C2 of the electronic fluorescent lamp safety device and at the same time the trigger pulse is supplied to the trigger pulse generating circuit 2, When the charging current of the capacitors C1 and C2 reaches a predetermined limit, the charges charged in the capacitors C1 and C2 are discharged and the fluorescent lamp FL is turned on and the capacitors C1 and C2 are charged Charged charge (FL) is turned off repeatedly, the fluorescent lamp (FL) flickers at a constant cycle, resulting in severe environmental trouble and shortening the lifetime of the fluorescent lamp (FL) will be.

The present invention is intended to solve these problems and will be described as follows.

That is, when the input switch SW such as the neon tube is switched to the terminal b, the current flowing into the condensers C1 and C2 while the neon tube N is lighted is considerably small, The capacitor C3 is charged through the resistor R1 so that the fluorescent light FL is not turned on by preventing the trigger pulse from being generated in the die-disconnection diode TD, A trigger pulse is generated when a voltage exceeding a certain limit is applied to discharge through the resistor R1. In this embodiment, one end of the current adjusting component R including a resistor is connected to the (+) power source through the resistor R1, The other side is connected in parallel with the diacid diode (TD) or connected to the negative power supply, so that the voltage applied to the diacid diode (TD) is below the trigger pulse generation threshold voltage So that the diacid diode TD can not generate the trigger pulse.

When the input switch SW is switched to the terminal a, the current passing through the resistor R1 is greatly increased. Therefore, the voltage applied to the diathode TD becomes higher than the threshold voltage, and a trigger pulse is generated, Is turned on.

As described above, the present invention can significantly reduce the power consumption and prevent the phenomenon that the fluorescent lamp is blinking according to the type of the switch used together with the ballast to cause the environmental trouble and shorten the life of the fluorescent lamp, And it is an electronic fluorescent ballast that can expect the effect of economic advantage.

Claims (1)

Diodes D5 to D7 for bypassing a part of the current flowing through the load and diodes D5 to D7 for minimizing the load current and diodes D5 to D7 for rectifying the input AC power, A power supply unit 1 configured to include smoothing capacitors C1 and C2 for smoothing a voltage, A capacitor C3 for charging through a resistor R1 by a voltage supplied from the power supply unit 1 and a diacid diode TD for generating a trigger pulse by being turned on when the capacitor C3 is charged The trigger R1 is connected to the lower side of the resistor R1 and the other side thereof is connected to the diathode TD in parallel or to the negative power supply, Including a resistor which causes a trigger pulse to be generated in the diacid diode (TD) when the current through the resistor (R1) is large when the current through the diode (TD) is small when the current through the resistor R) is connected to prevent the fluorescent lamp from blinking when the power switch is turned off regardless of the type of the power switch. Electronic fluorescent ballast.