KR200424979Y1 - On mult-lightelectrnic stabilizer for automatic output control system - Google Patents

Abstract

The present invention relates to a two-lamp electronic ballast having an automatic output control function to selectively turn on only one fluorescent lamp of the two fluorescent lamps, the buffer unit 101 for buffering the shock current by switching the input power source And a filter unit 103 which removes noise that may be introduced from the input power and supplies high-quality power, and a rectifying unit that converts AC power into DC power by receiving power from the filter unit 103. (105), a smoothing unit (107) for converting a power source including a pulsation of an AC component supplied from the rectifying unit (105) into a high-quality direct current, and triggering the DC power at a high speed and a short trigger pulse The oscillator 109 converts the high frequency via a self-oscillator, and the high frequency output voltage of the oscillator 109 is up to the breakdown voltage for initiating the discharge of fluorescent lamps. A plurality of fluorescence which maintains an impedance and becomes a low impedance after the discharge start voltage, and a plurality of fluorescence which starts to discharge by a large amount of ionization at a voltage boosted by the resonance effect of the resonator 111 And an automatic output controller 113 for controlling a connection state between the lamp 115 and the resonator 111 and the fluorescent lamps 115a and 115b.

Fluorescent lamp, electronic ballast, 2 light, automatic, output control

Description

ON MULT-LIGHTELECTRNIC STABILIZER FOR AUTOMATIC OUTPUT CONTROL SYSTEM}

1 is a block diagram illustrating an embodiment of a second ballast electronic ballast having an automatic output control function according to the present invention.

2 is a block diagram for explaining another embodiment of the electronic ballast for a second light having an automatic output control function according to the present invention.

*** Explanation of symbols on main parts of drawing ***

100: electronic ballast

101: buffer part

103: filter unit

105: rectifier

107: smoothing part

109: oscillation unit

111: resonator

113: automatic output control unit

113a: controller

113b-1, 113b-2: Button part

113c-1, 113c-2: switching unit

115a, 115b: fluorescent lamp

The present invention relates to a second ballast electronic ballast having an automatic output control function.

More specifically, only one fluorescent lamp of the two fluorescent lamps can be selectively turned on, and only one fluorescent lamp that normally operates normally when one of the two fluorescent lamps has an abnormality or has reached the end of its life An electronic ballast for a two lamp having an automatic output control function to be turned on.

Electronic ballast refers to ballast used as a power source for lamps by converting 60Hz, a commercial power frequency, into a high frequency of 20-50kHz using a high frequency conversion circuit. The ballast acts as a starter to turn on the lamp since it supplies an initial starting voltage to the fluorescent lamp to facilitate the discharge of the lamp.

Fluorescent lamps have negative characteristics due to the voltage-current of the lamp. When the initial lamp is turned on, the voltage continuously decreases and the current rises, eventually destroying the lamp. In order to prevent this phenomenon, a ballast is required. After lighting, the ballast supplies a constant voltage to the lamp to limit the current. Therefore, the ballast continuously supplies a constant voltage to the fluorescent lamp to interrupt the discharge of the lamp, thereby maintaining the lighting of the lamp continuously.

The electronic ballast mainly used the self-learning method as the oscillation method of the high frequency inverter as the high frequency lighting method in the early 1980s. Has been pervasive. The advantage of this method is that the design is easy and the frequency is easily converted and the efficiency is very high. Therefore, it is the most adopted circuit as the main circuit of the electronic ballast, and it is one of the most commercialized driving methods in Korea. One.

In general, a low power fluorescent lamp of 10W (watt) to 40W rectifies / smoothes 220V (voltage) to supply a DC voltage of about 300V directly to the oscillation circuit to turn on the fluorescent lamp.

The electronic ballast as described above is turned on by supplying power to two fluorescent lamps provided in one set at the same time.

In some cases, only one fluorescent lamp is turned on without using both fluorescent lamps. In this case, the fluorescent lamp is removed.

When the fluorescent lamp is removed as described above, it is not only unsightly in appearance but also has to be reinserted as necessary.

The present invention is devised to solve the problems of the prior art as described above, an object of the present invention is to selectively light only one of the two fluorescent lamps, one of the two fluorescent lamps In case of abnormality or end of life, it provides an electronic ballast for two lamps with automatic output control function to turn on only the fluorescent lamp that normally operates automatically.

One embodiment of the present invention proposed to solve the technical problem as described above, in the electronic ballast for the second lamp having an automatic output control function, the buffer unit 101 for buffering the shock current by the switching of the input power, and Filter unit 103 for supplying high quality power by removing noise that may be introduced from the input power, and rectifier 105 for changing the AC power to DC power by receiving the power of the filter unit 103. And a smoothing unit 107 for converting the power including the pulsation of the AC component supplied from the rectifier 105 into a high-quality direct current, and triggering the DC power at high speed and generating a short trigger pulse. high impedance (imp) to the oscillation unit 109 for converting to high frequency through a self-oscillator and to a breakdown voltage for initiating the discharge of the fluorescent lamp from the high frequency output voltage of the oscillation unit 109 a plurality of fluorescent lamps for maintaining the edance and performing a large amount of ionization at a voltage boosted by the resonance effect of the resonator unit 111 and a low impedance after the discharge start voltage; And an automatic output controller 113 for controlling a connection state of the resonator 111 and the fluorescent lamps 115a and 115b.

The automatic output control unit 113 includes a switching unit 113c-1 and 113c-2 connected between the resonator unit 111 and the plurality of fluorescent lamps 115a and 115b, and the plurality of switching units 113c-1 and 113c-2. The discharge state of the fluorescent lamps 115a and 115b is checked to find the fluorescent lamps 115a and 115b in which an abnormality occurs, and the switching is performed such that the connection between the fluorescent lamp 115 and the resonator 111 is disconnected. And a controller 113a for controlling the units 113c-1 and 113c-2.

The automatic output control unit 113 may include a switching unit 113c-1 and 113c-2 connected between the resonator unit 111 and the fluorescent lamps 115a and 115b and a user's operation. According to the present invention, the switching units 113c-1 and 113c02 may be configured as button units 113b-1 and 113b-2 to be turned on or off.

Hereinafter, with reference to the accompanying drawings will be described in detail for the electronic ballast for the second light having an automatic output control function.

(Example 1)

Embodiment 1 of the second electronic ballast 100 having an automatic output control function according to the present invention is a buffer unit 101 for buffering the shock current by the switching of the AC input power, as shown in Figure 1, and Filter unit 103 for supplying high quality power by removing noise that may be introduced from the input power, and rectifier 105 for changing the AC power to DC power by receiving the power of the filter unit 103. And a smoothing unit 107 for converting the power including the pulsation of the AC component supplied from the rectifier 105 into a high-quality direct current, and triggering the DC power at high speed and generating a short trigger pulse. maintains high impedance until the oscillation unit 109 converts the high frequency through a self-oscillator and the breakdown voltage at which the high frequency output voltage of the oscillation unit 109 starts to discharge the fluorescent lamp. A resonator 111 which becomes a low impedance after the discharge start voltage, a plurality of fluorescent lamps 115 which start to discharge by a large amount of ionization at a voltage boosted by the resonance effect of the resonator 111; It is composed of an automatic output control unit 113 for controlling the connection state of the resonator unit 111 and the plurality of fluorescent lamps (115a, 115b).

The automatic output control unit 113 includes a switching unit 113c-1 and 113c-2 connected between the resonator unit 111 and the plurality of fluorescent lamps 115a and 115b, and the plurality of fluorescent lamps. Check the discharge state of the lamps 115a and 115b to find out the fluorescent lamps 115a and 115b in which an abnormality occurs and disconnect the fluorescent lamps 115a and 115b from the resonator unit 111. The controller 113a controls the switching units 113c-1 and 113c-2.

Referring to the automatic output control method of the second ballast electronic ballast configured as described above are as follows.

As shown in FIG. 1, when the commercial power is switched to the AC input power to be input to the buffer unit 101, the buffer unit 101 buffers the shock current and then enters the filter unit 103. .

The filter unit 103 filters the noise generated from the power source and the oscillator and then inputs AC input power to the rectifying unit 105 and the smoothing unit 107, and the rectifying unit 105 and the smoothing unit 107 transmit the noise. Converts the filtered AC input power into a good DC power.

The high-quality DC power is input to the oscillator 109, the oscillator 109 is triggered at a high speed using a high-quality DC power (trigger) and a short trigger pulse is a high frequency through the oscillator (self-oscillator) Convert

The high frequency output voltage of the oscillator 109 is input to the resonator 111, and the resonator 111 has a high impedance up to the breakdown voltage at which the fluorescent lamps 115a and 115b start to discharge. impedance) and low impedance after the discharge start voltage, and the voltage boosted by the resonance effect of the resonator 111 is supplied to the fluorescent lamps 115a and 115b, and the fluorescent lamp 115a ( 115b) is a large amount of ionized by the boosted voltage to start the discharge, the current flows through the fluorescent lamps (115a) 115b is turned on.

At this time, the controller 113a of the automatic output control unit 113 determines the discharge state of the plurality of fluorescent lamps 115a and 115b, and determines the discharge state of one of the fluorescent lamps 115a and 115b. When the discharge state is less than or equal to a predetermined reference value, the switching unit 113b-1 is controlled to prevent the output voltage of the resonator unit 111 from being supplied to the fluorescent lamp 115a.

(Example 2)

Embodiment 2 of the second electronic ballast 100 having an automatic output control function according to the present invention in a manner to selectively turn on two fluorescent lamps when compared to the first embodiment as shown in Figure 2 As there is a difference, there will be a difference in the configuration of the automatic output control unit 113.

That is, the automatic output control unit 113 is a switching unit 113c-1 (connected between the resonator unit 111 and the plurality of fluorescent lamps 115a and 115b, as shown in FIG. 113c-2) and button portions 113b-1 and 113b-2 which allow the switching units 113c-1 and 113c-2 to be turned on or off in accordance with a user's operation.

Since other configurations are the same as those in the first embodiment, detailed description thereof will be omitted here.

Referring to the automatic output control method of the second ballast electronic ballast configured as described above are as follows.

Since the operation of the second lamp electronic ballast is the same as that of the first embodiment, a detailed description thereof will be omitted here, and only the automatic output control method will be described. There are two switching units 113c- between the two fluorescent lamps and the resonator 111. 1) 113c-2 and button portions 113b-1 and 113b-2 that can switch between the two switching units 113c-1 and 113c-2 are provided. The switching units 113c-1 and 113c-2 are normally closed, and are opened when the button units 113b-1 and 113b-2 are turned on to open the resonator 111 and the fluorescent lamp 115. To disconnect. That is, when the user wants to turn on only one fluorescent lamp 115 of the two fluorescent lamps 115, the user turns on the button unit 113b-1 connected to the fluorescent lamp 115 to be turned off. Then, the switching unit 113c-1 connected to the button unit 113b-1 is opened, and the resonator unit 111 and the fluorescent lamp 115a are disconnected and are turned off.

The present invention is not limited to the above embodiments, and various modifications and changes can be made by those skilled in the art, which are included in the spirit and scope of the present invention included in the appended claims.

The present invention having the configuration and operation and the preferred embodiment as described above allows only one fluorescent lamp of two fluorescent lamps to be selectively lit, and an abnormality or lifetime of one fluorescent lamp of the two fluorescent lamps occurs. When it is done, there is an effect that only the normal fluorescent lamp is automatically turned on.

On the other hand, the present invention can be configured to receive power to the entire circuit from a known uninterruptible power supply (UPS) for converting and supplying battery power to AC power when the AC input power is out of power.

Claims (4)

In the electronic ballast for two lamps with automatic output control, A buffer unit 101 for buffering an impact current by switching an input power source, A filter unit 103 for supplying high-quality power by removing noise that may be introduced from the input power; Rectifier 105 for receiving the power of the filter unit 103 to change the AC power to DC power, and A smoothing unit 107 for converting a power source including a ripple of an AC component supplied from the rectifying unit 105 into a high-quality direct current, An oscillator 109 for triggering the DC power at a high speed and converting a high frequency through a self-oscillator by generating a short trigger pulse; A resonator 111 which maintains a high impedance until the high frequency output voltage of the oscillator 109 is up to a discharge breakdown voltage at which the discharge of the fluorescent lamp starts, and becomes a low impedance after the discharge start voltage; A plurality of fluorescent lamps 115a and 115b that are ionized at a voltage boosted by the resonance effect of the resonator 111 to initiate discharge; Automatic output control unit 113 for controlling the connection state of the resonator unit 111 and the plurality of fluorescent lamps (115a, 115b) Electronic ballast for the second lamp having an automatic output control function characterized in that it is provided, including. The method of claim 1, wherein the automatic output control unit 113, Switching units 113c-1 and 113c-2 connected between the resonator 111 and the fluorescent lamps 115a and 115b; The discharge state of the plurality of fluorescent lamps 115a and 115b is checked to find out the fluorescent lamps 115a and 115b in which an abnormality occurs, and the fluorescent lamps 115a and 115b and the resonator 111 Electronic ballast having a automatic output control function, characterized in that consisting of a controller (113a) for controlling the switching unit (113c-1) (113c-2) to be disconnected. The method of claim 1, wherein the automatic output control unit 113, Switching units 113c-1 and 113c-2 connected between the resonator 111 and the fluorescent lamps 115a and 115b; 2 having an automatic output control function, characterized in that it comprises a button portion (113b-1) (113b-2) for turning on or off the switching unit (113c-1) (113c-2) in accordance with the user's operation Electronic ballasts for lanterns. The electronic ballast of claim 1 or 2, wherein the AC ballast is configured to receive power from a known uninterruptible power supply when the AC input power is interrupted.

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