KR200310612Y1 - A Electric Type Ballast For Fluorescent Lamp - Google Patents

Abstract

The present invention relates to an electronic fluorescent lamp ballast which is provided with a multi-stage switch to enable a plurality of fluorescent lamps to be turned on by an electronic method, but selectively turn on / off the front or rear of the fluorescent lamp driver. By installing a switch on the input side or the discharge side of the fluorescent lamp driving unit where the fluorescent lamps are installed respectively, the flow of electric power is interrupted so that any one of the fluorescent lamps installed in each fluorescent lamp driving unit can be selectively lit, and a plurality of conventional electronic ballasts are installed. Since only a rotary switch of the ordinary type is installed on the input side or the discharge side of the fluorescent lamp driving unit, the structure is simple and can be easily manufactured. Since any one of the plurality of fluorescent lamps is selectively lit, the fluorescent lamp is reduced while reducing power consumption. Can be used efficiently.

Description

Electronic Ballast for Fluorescent Lamps {A Electric Type Ballast For Fluorescent Lamp}

The present invention relates to an electronic fluorescent ballast which is capable of selectively turning on / off a plurality of fluorescent lamps.

In more detail, it is possible to light a plurality of fluorescent lamps by an electronic method, but by installing a multi-stage switch to selectively turn on / off the front or rear of the fluorescent lamp driver, It is to provide an improved electronic fluorescent ballast that can be selectively turned on or off at the same time.

Electronic ballasts (lighting circuits) for lighting fluorescent lamps have various circuit configurations, such as Utility Model Registration No. 207660, Utility Model Registration No. 240097, Utility Model Registration No. 273686, and Utility Model Registration No. 207660. Branches are known, and a conventional electronic ballast for fluorescent lamps will be described with reference to the accompanying drawings.

Conventional electronic ballasts for fluorescent lamps include a bridge diode (3) for converting a predetermined alternating current into a direct current, and a direct current converter (3) composed of a voltage surge (Z1) and a transformer (L1), and a capacitor. A voltage adjusting unit 4 composed of (C1, C2, C3) and diodes (D5, D6, D7) to adjust a constant voltage, resistors R1, R2, capacitor C4, and resistor R2 connected in series. And a trigger pulse generator 5 including a diode D8 connected in parallel with the diode D8 and a diac diode (DIAC) for generating a trigger pulse when the charging of the capacitor C4 is completed. The oscillation coils OSC1 and OSC2 in which the voltage is induced by the trigger pulse generated by the trigger pulse operation unit 5, the zener diodes Zn1 and Zn2, and the resistors R3 and R4, which prevent the overcurrent from flowing. It is composed of transistors Q1 and Q2 that are ON by the voltage between the diodes D10 and D11. The coil L2 is formed by the voltage supplied from the first and second oscillation parts 6-1 and 6-2 and the first and second oscillation parts 6-1 and 6-2 for generating a frequency. (C5) (C6) and coils (L2) (L3) and capacitors (C3) to light the first and second fluorescent lamps (LAMP1) and (LAMP2) by charging / discharging (L3) and capacitors (C7) and (C8). C7) consists of first and second fluorescent lamp driving units 7-1 and 7-2 including reverse bypass diodes D12 and D13 for preventing overcharge by a series resonant circuit composed of C8 and C8. It is.

The conventional electronic ballast for fluorescent lamps constructed and operated in this manner simultaneously turns on the first and second fluorescent lamps LAMP1 (LAMP2) by a switch (not specifically shown) provided at the front end of the DC voltage converter 3. There was a problem in that the first and second fluorescent lamps LAMP1 and LAMP2 could not be turned on and off selectively, so that the first and second fluorescent lamps LAMP1 and LAMP2 were selectively turned on and off. There was a problem that cannot be made, and therefore, a plurality of fluorescent lights are unnecessarily lit in a place where brightness is not required, thereby not only wasting power but also shortening the lifetime of the fluorescent lights.

The present invention is to provide an improved electronic ballast for fluorescent lamps to solve the above problems.

The present invention enables the lighting of a plurality of fluorescent lamps by an electronic method, but an electronic fluorescent ballast is provided to selectively turn on / off each fluorescent lamp by selectively installing a multi-stage switch in front or rear of the fluorescent lamp driver. The purpose is to provide.

Another object of the present invention is to selectively turn on / off each fluorescent lamp by selectively installing a multi-stage switch in front or rear of the fluorescent lamp driver, thereby preventing a waste of power by simultaneously lighting a plurality of fluorescent lamps. In addition, the present invention provides an electronic fluorescent ballast that can extend the life of the fluorescent lamp by limiting the use of the fluorescent lamp.

Still another object of the present invention is to provide an electronic fluorescent ballast that can be installed in a multi-stage switch selectively according to the number of fluorescent lights to be installed, and can be easily manufactured by simplifying the structure.

The above and other objects of the present invention,

A DC converter 3 for converting a predetermined AC current into a DC current, a voltage adjuster 4 for adjusting an input voltage to a constant voltage, and a diac diode (DIAC) for generating a trigger pulse. Trigger pulse generating section 5, first and second oscillating sections 6-1 and 6-2 for generating high frequency while preventing voltage from being induced by the trigger pulse and preventing overcurrent from flowing, and First and second fluorescent lamp driving units 7-1 (7-1) which light the first and second fluorescent lamps LAMP1 and LAMP2 by the voltage supplied from the second oscillation sections 6-1 and 6-2. -2),

The first fluorescent lamp driving unit 7-1 or the first fluorescent lamp driving unit 7-1 and the second fluorescent lamp driving unit 7-2 is provided with a multi-stage selective lighting switch 10. It is achieved by the electronic ballast 1, characterized by selectively lighting the first fluorescent lamp LAMP1 or the second fluorescent lamp LAMP2 of the two fluorescent lamp driver 7-2.

1 is an exemplary circuit diagram showing an electronic ballast for a fluorescent lamp according to the present invention.

2 is a circuit diagram of another embodiment of the electronic ballast for fluorescent lamps according to the present invention.

Explanation of symbols on the main parts of the drawings

1. Electronic ballast 2. Bridge diode 3. DC switch

4. Voltage adjuster 5. Trigger pulse generator 6-1. First Oscillator

6-2. Second Oscillator 7-1. First fluorescent lamp driving unit 7-2. 2nd fluorescent lamp driver

10. Sorting light switch

The above and other objects of the present invention will be more clearly understood by the following detailed description based on the accompanying drawings.

1 and 2 show specific implementation examples of the electronic ballast 1 according to the present invention, FIG. 1 is an exemplary view and FIG. 2 is an exemplary view of another embodiment.

Trigger pulse including a DC converter 3 for converting a predetermined AC current into a DC current, a voltage adjuster 4 for adjusting an input voltage to a constant voltage, and a diac diode (DIAC) for generating a trigger pulse. The generating section 5, the first and second oscillation sections 6-1 and 6-2, and the first and second oscillating sections (6-2) and (6-2), which generate voltages by the trigger pulse and prevent over current from flowing. First and second fluorescent lamp driving units 7-1 and 7-2, which light the first and second fluorescent lamps LAMP1 and LAMP2 by the voltage supplied from 6-1) and 6-2. It is installed in the input or output part of the first fluorescent lamp driver 7-1 and the second fluorescent lamp driver 7-2 so as to selectively light the first fluorescent lamp LAMP1 or the second fluorescent lamp LAMP2. It was formed as a selection light switch 10 of.

The DC voltage converter 3 is formed of a voltage surge Z1 and a transformer L1 including a conventional bridge diode 3 so as to convert a predetermined AC voltage into a DC voltage. 4) is formed of capacitors (C1, C2, C3) and diodes (D5, D6, D7) to adjust the output to a constant voltage, and the trigger pulse generator (5) is connected in series with the resistor (R1) ( Formed from R2), capacitor C4, and diode D8 and DIAC connected in parallel with resistor R2, the DIAC is turned on when charging of capacitor C4 is completed. (ON) operation to generate a trigger pulse.

Further, the first oscillator 6-1 and the second oscillator 6-1 and 6-2 are oscillating coils OSC1 (OSC2) in which voltage is induced by the trigger pulse generated by the trigger pulse operating section 5. ) And transistors Q1 and Q2 that are ON by the zener diodes Zn1 and Zn2 that prevent over current from flowing and the voltage between the resistors R3 and R4 and the diodes D10 and D11. The first fluorescent lamp driver 7-1 and the second fluorescent lamp driver 7-2 are supplied from the first and second oscillator parts 6-1 and 6-2. The capacitors C5 and C6 and the coil L2 which turn on the first and second fluorescent lamps LAMP1 and LAMP2 by charging / discharging the coils L2 and L3 and the capacitors C7 and C8 according to the voltage applied thereto. ) And a reverse bypass diode (D12) (D13) for preventing overcharging by a series resonant circuit composed of a (L3) and a capacitor (C7) (C8). Same phrase Since a more specific description thereof will be omitted.

The present invention is provided with a multi-stage selective light switch 10 in the input or output of the first fluorescent lamp driving unit 7-1 and the second fluorescent lamp driving unit 7-2 in the conventional electronic ballast configured as described above. The first fluorescent lamp LAMP1 or the second fluorescent lamp LAMP2 of the first fluorescent lamp driver 7-1 and the second fluorescent lamp driver 7-2 can be selectively lit.

In the embodiment illustrated in FIG. 1, the selective fluorescent light switch 10 is installed in the input portion of the first fluorescent light driving unit 7-1 and the second fluorescent light driving unit 7-2. (7-1) and a sorting light switch 10 are provided at the input terminals of each of the coils L2 and L3 of the second fluorescent lamp driving unit 7-2, and a switching port is connected to the power supply side. P1) and P2 were formed in connection with the input lines of the coils L2 and L3.

2 illustrates a state in which a sorting light switch 10 is installed at an output of the first fluorescent light driver 7-1 and the second fluorescent light driver 7-2. The terminals of the fluorescent lamp LAMP1 and the second fluorescent lamp LAMP2 and the ports P1 and P2 were respectively connected, and the switching ports were connected as output terminals.

Hereinafter, the operation principle of the present invention.

The AC voltage input to the DC converter 3 passes from the bridge diode BD to the DC current (full wave rectification) through the fuse F1 and the transformer L1 after the overcurrent is checked by the voltage surge Z1. The DC current, which is changed and applied to the voltage adjusting unit 4, is input to the voltage adjusting unit 4 by a smoothing circuit composed of the capacitors C1, C2, C3 and the diodes D5, D6, D7. It is adjusted and output to the trigger pulse generator 5.

The voltage input to the trigger pulse generator 5 is charged to the capacitor C4 through the resistors R1 and R2. When the charging is completed, the voltage applied to the DIAC exceeds the limit voltage. When the DIAC is ON, the capacitor C4 is discharged to generate a trigger pulse. When the DIAC is turned ON and falls below the limit voltage, the DIAC is DIAC. ) Is turned off and the capacitor C4 is charged again, and the trigger pulse signal generated by the trigger pulse generator 5 is output to the first oscillator 6-1 and the second oscillator 6-2. do.

The trigger pulse signals inputted to the first oscillator 6-1 and the second oscillator 6-2 are supplied to the oscillation coils OSC1 and OSC2, are induced at a predetermined voltage, and passed through the resistors R3 and R4. The transistors Q1 and Q2 are conducted while being input to the bases of the transistors Q1 and Q2 to oscillate.

As described above, the first fluorescent lamp driver 7-1 and the second fluorescent lamp driver 7-2 are operated by the oscillation action generated by the first oscillator 6-1 and the second oscillator 6-2. As shown in FIGS. 1 and 2, when the selective light switch 10 is connected to the port P1 (ON) and turned off from the port P2, only the first fluorescent lamp driving unit 7-1 has a current. Since the first fluorescent lamp LAMP1 is turned on and the second fluorescent lamp LAMP2 is turned off.

On the other hand, when the selective light switch 10 is connected to the port P2 (ON) and turned off from the port P1, the current flows only to the second fluorescent lamp driving unit 7-2, so that the second fluorescent lamp LAMP2 Is turned on and the first fluorescent lamp LAMP1 remains off.

As described above, the electronic ballast 1 according to the present invention selectively supplies current to the first fluorescent lamp driving unit 7-1 or the second fluorescent lamp driving unit 7-2 by simply operating the selective light switch 10. In this way, the first fluorescent lamp LAMP1 or the second fluorescent lamp LAMP2 can be selectively turned on or off.

As described above, the electronic ballast according to the present invention intercepts the flow of electricity by installing a switch at the input side or the discharge side of the fluorescent lamp driving unit where the fluorescent lamps are installed, so that any one of each fluorescent lamp installed in each fluorescent lamp driving unit can be selectively lit. Since only a conventional rotary type switch is provided on the input side or the discharge side of the fluorescent lamp driver installed in plural in the conventional electronic ballast, the structure is simple and can be easily manufactured, and any one of the plurality of fluorescent lamps can be selected. Since it turns on, the fluorescent lamp can be used efficiently while reducing the waste of power.

Claims (3)

A DC converter 3 for converting a predetermined AC current into a DC current, a voltage adjuster 4 for adjusting an input voltage to a constant voltage, and a diac diode (DIAC) for generating a trigger pulse. Trigger pulse generating section 5, first and second oscillating sections 6-1 and 6-2 for generating high frequency while preventing voltage from being induced by the trigger pulse and preventing overcurrent from flowing, and First and second fluorescent lamp driving units 7-1 (7-1) which light the first and second fluorescent lamps LAMP1 and LAMP2 by the voltage supplied from the second oscillation sections 6-1 and 6-2. -2), The first fluorescent lamp driving unit 7-1 or the first fluorescent lamp driving unit 7-1 and the second fluorescent lamp driving unit 7-2 is provided with a multi-stage selective lighting switch 10. An electronic ballast for fluorescent lamps, characterized by selectively illuminating the first fluorescent lamp (LAMP1) or the second fluorescent lamp (LAMP2) of the two fluorescent lamp driver (7-2). The method of claim 1, wherein the sorting light switch 10 provided in the input of the first fluorescent light driving unit 7-1 and the second fluorescent light driving unit 7-2, A sorting light switch 10 is installed at the input terminal of each of the coils L2 and L3 of the first fluorescent lamp driving unit 7-1 and the second fluorescent lamp driving unit 7-2, and the switching port is provided on the power supply side. And an output port (P1) (p2) connected to an input line of a coil (L2) (L3), respectively. The method of claim 1, wherein the sorting light switch 10 provided in the output of the first fluorescent light driving unit 7-1 and the second fluorescent light driving unit 7-2, An electronic ballast for fluorescent lamps, wherein ports P1 and P2 are respectively connected to terminals of each of the first fluorescent lamps LAMP1 and the second fluorescent lamps LAMP2, and a switching port is connected to an output terminal.