KR100782991B1 - A limited time illumination keep circuit a time of power off - Google Patents

A limited time illumination keep circuit a time of power off Download PDF

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KR100782991B1
KR100782991B1 KR1020060085996A KR20060085996A KR100782991B1 KR 100782991 B1 KR100782991 B1 KR 100782991B1 KR 1020060085996 A KR1020060085996 A KR 1020060085996A KR 20060085996 A KR20060085996 A KR 20060085996A KR 100782991 B1 KR100782991 B1 KR 100782991B1
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South Korea
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unit
power
lamp
switch
voltage
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KR1020060085996A
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Korean (ko)
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김교천
윤종용
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주식회사 유니룩스
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    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B41/00—Circuit arrangements or apparatus for igniting or operating discharge lamps
    • H05B41/14—Circuit arrangements
    • H05B41/36—Controlling
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B41/00—Circuit arrangements or apparatus for igniting or operating discharge lamps
    • H05B41/14—Circuit arrangements
    • H05B41/26—Circuit arrangements in which the lamp is fed by power derived from dc by means of a converter, e.g. by high-voltage dc
    • H05B41/28—Circuit arrangements in which the lamp is fed by power derived from dc by means of a converter, e.g. by high-voltage dc using static converters
    • H05B41/295—Circuit arrangements in which the lamp is fed by power derived from dc by means of a converter, e.g. by high-voltage dc using static converters with semiconductor devices and specially adapted for lamps with preheating electrodes, e.g. for fluorescent lamps
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B41/00—Circuit arrangements or apparatus for igniting or operating discharge lamps
    • H05B41/14—Circuit arrangements
    • H05B41/26—Circuit arrangements in which the lamp is fed by power derived from dc by means of a converter, e.g. by high-voltage dc
    • H05B41/28—Circuit arrangements in which the lamp is fed by power derived from dc by means of a converter, e.g. by high-voltage dc using static converters
    • H05B41/295—Circuit arrangements in which the lamp is fed by power derived from dc by means of a converter, e.g. by high-voltage dc using static converters with semiconductor devices and specially adapted for lamps with preheating electrodes, e.g. for fluorescent lamps
    • H05B41/298—Arrangements for protecting lamps or circuits against abnormal operating conditions
    • H05B41/2981—Arrangements for protecting lamps or circuits against abnormal operating conditions for protecting the circuit against abnormal operating conditions
    • H05B41/2983—Arrangements for protecting lamps or circuits against abnormal operating conditions for protecting the circuit against abnormal operating conditions against abnormal power supply conditions
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B41/00—Circuit arrangements or apparatus for igniting or operating discharge lamps
    • H05B41/14—Circuit arrangements
    • H05B41/26—Circuit arrangements in which the lamp is fed by power derived from dc by means of a converter, e.g. by high-voltage dc
    • H05B41/28—Circuit arrangements in which the lamp is fed by power derived from dc by means of a converter, e.g. by high-voltage dc using static converters
    • H05B41/295—Circuit arrangements in which the lamp is fed by power derived from dc by means of a converter, e.g. by high-voltage dc using static converters with semiconductor devices and specially adapted for lamps with preheating electrodes, e.g. for fluorescent lamps
    • H05B41/298—Arrangements for protecting lamps or circuits against abnormal operating conditions
    • H05B41/2981—Arrangements for protecting lamps or circuits against abnormal operating conditions for protecting the circuit against abnormal operating conditions
    • H05B41/2985—Arrangements for protecting lamps or circuits against abnormal operating conditions for protecting the circuit against abnormal operating conditions against abnormal lamp operating conditions

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  • Circuit Arrangements For Discharge Lamps (AREA)

Abstract

A circuit for keeping a predetermined illumination for a limited time at the time of power-off of a switch is provided to keep a predetermined illumination for a limited time at the time of cutting off a power by turning off a manual switch. A circuit for keeping a predetermined illumination for a limited time at the time of power-off of a switch includes an EMI filter and a rectification smoothing unit, a power factor correction unit, an inverter drive unit and a switching unit, a lamp outputting unit, an illumination maintenance delaying unit(5), and a protective circuit unit. The EMI filter and the rectification smoothing unit rectify and make smooth an inputted AC power to convert the AC power to a DC power. The power factor correction unit is connected to output ports of the EMI filter and the rectification smoothing unit, and corrects a power factor and a harmonic distorted by a condenser and an inverter within a ballast. The lamp outputting unit stably supplies a harmonic AC current formed by L-C resonance. The illumination maintenance delaying unit puts out the lamp after delaying a lighting state for the limited time. The protective circuit unit protects the ballast by stopping the ballast.

Description

스위치 오프시 일정시간 임의 조도 유지회로{A limited time illumination keep circuit a time of power off}A limited time illumination keep circuit a time of power off}

도 1은 본 발명의 전체적인 블록도1 is an overall block diagram of the present invention.

도 2는 도 1의 조도 유지 지연부 블록도FIG. 2 is a block diagram of the illumination sustaining delay unit of FIG. 1. FIG.

도 3은 본 발명의 실시예를 나타낸 상세 회로도3 is a detailed circuit diagram illustrating an embodiment of the present invention.

〈도면의 주요부분에 대한 부호의 설명〉<Explanation of symbols for main parts of drawing>

1:EMI 필터 및 정류 평활부 2:역율 개선부1: EMI filter and rectification smoothing part 2: Power factor improving part

3:발진,인버터 드라이브 및 스위칭부 4:램프 출력부3: oscillation, inverter drive and switching part 4: lamp output part

5:조도 유지 지연부 6:보호 회로부5: Illumination maintenance delay part 6: Protection circuit part

10:스위치 오프신호감지부 11:정류 및 평활전압 레벨감지부10: switch off signal detection unit 11: rectification and smoothing voltage level detection unit

12:동작 오프회로부 13:임의 조도 레벨 콘트롤회로부12: Operation off circuit section 13: Arbitrary illuminance level control circuit section

본 발명은 램프의 안정기에 관한 것으로, 특히 스위치를 오프했을 때 램프가 바로 소등되지 않고 일정 시간 동안 임의 조도 상태(또는 저조도 상태)를 유지한 후 완전히 소등될 수 있도록 한 스위치 오프시 일정시간 임의 조도 유지회로에 관한 것 이다.The present invention relates to a ballast of a lamp, and in particular, when the switch is turned off, the lamp is not immediately turned off, but after a certain time (or low light) to maintain a certain illuminance state (or low light state) for a certain period of time at the time of switch-off random illumination It is about the holding circuit.

일반적으로 형광등은 방전관의 일종으로 방전에 필요한 열전자를 방출하기 위하여 초기에 높은 전압이 필요하며, 방전 후 형광등에 인가된 전압은 램프전류가 커지면 반대로 감소하는 부성저항 특성을 갖고 있다. In general, a fluorescent lamp is a kind of discharge tube, and a high voltage is required initially to emit hot electrons required for discharge, and the voltage applied to the fluorescent lamp after discharge has a negative resistance characteristic that decreases as the lamp current increases.

따라서, 부성 저항 특성으로 인해 점등이 불안정해지거나 그 자체로 램프가 파손될 수 있다.Therefore, the lighting may become unstable due to the negative resistance characteristic or the lamp itself may be broken.

즉, 안정기는 초기에는 점등에 필요한 고전압을 공급하여 램프를 점등시키고, 점등 후에는 램프의 전류를 제어하여 일정한 밝기를 유지시켜주는 역할을 하는 것으로, 반도체 부품과 수동전자 부품으로 구성된 전자회로를 사용하여 교류 50㎐/60㎐의 전원을 주파수 변환회로를 이용하여 고주파(20㎑~100㎑)로 변환 후 램프전원으로 사용, 램프를 점등시킨다. In other words, the ballast turns on the lamp by supplying the high voltage required for lighting at the beginning and maintains the constant brightness by controlling the current of the lamp after the lighting, and uses an electronic circuit composed of semiconductor components and passive electronic components. After converting AC 50 ㎐ / 60 전원 to high frequency (20 ㎑ ~ 100 ㎑) using frequency conversion circuit, use as lamp power and turn on lamp.

따라서, 전자식 안정기는 자기식 안정기에 비하여 발광효율이 약 15%정도 향상되며, 반도체소자를 사용하므로 초크코일에서의 자체 발열로 인한 손실을 약 25%정도 줄일 수 있어 사실상 자기식 안정기에 비해 35%이상 절전효과를 얻을 수 있다.Therefore, the electronic ballast improves light emission efficiency by about 15% compared to the magnetic ballast, and by using semiconductor devices, the loss due to self-heating in the choke coil can be reduced by about 25%. Abnormal power saving effect can be obtained.

통상적으로 집이나 사무소에서 스위치를 오프시키면 전원이 바로 차단되어 형광등이 소등되므로 집이나 사무소를 나오면서 전원을 차단하면 바로 형광등이 소등되어 잠시 물건을 잊고 나와 다시 집이나 사무소에 들어가야 하는 경우에는 다시 전원을 온 시켜 형광등을 점등시켜야 하는 결점이 있었다.Normally, when the switch is turned off at home or office, the power is cut off immediately and the fluorescent lamp is turned off. So, when you turn off the power while leaving the house or office, the fluorescent lamp is turned off immediately. There was a drawback that the fluorescent lamp had to be turned on.

이와 같은 종래의 결점을 해결하기 위하여 제안된 것이 본 출원인에 의해 출원 및 등록된 특허등록번호 제10-0523406호로, 집이나 사무소를 나오면서 전원을 차단하 면 형광등 등의 램프가 바로 소등되는 것이 아니라 일정 시간 동안 저조도 및 임의의 조도로 유지한 후 소등되도록 한 것이며, 이 경우 주파수 조정으로 스위치 오프시 임의시간 지연된 후 소등되도록 한 것이나, 주파수 조정으로 전원차단을 지연시키므로 원가가 상승하는 결점이 있었다.Patent No. 10-0523406, filed and registered by the present applicant, has been proposed to solve the above-mentioned shortcomings. When the power is cut off while leaving the home or office, lamps such as fluorescent lamps are not immediately turned off, The lamp was turned off after being maintained at low and arbitrary illuminance for a period of time, and in this case, the lamp was turned off after a random time delay when the switch was turned off by frequency adjustment, but the cost was increased due to the delay of power cut by frequency adjustment.

본 발명은 상기와 같은 종래의 문제점들을 해결하기 위한 것으로, 본 발명의 목적은, 집이나 사무소를 나오면서 전원을 차단하면 형광등 등의 램프가 바로 소등되는 것이 아니라 일정 시간 동안 임의조도를 유지한 후 소등됨으로써 전원을 차단하여도 소정 시간 동안에는 실내 밝기를 일정시간 유지해 줄 수 있도록 하되 이러한 전원차단을 지연시키는 수단으로 주파수 조정수단을 사용하지 않고 VDC전압다운 방식을 사용한 스위치 오프시 일정시간 임의 조도 유지회로를 제공하는데 있다.The present invention is to solve the conventional problems as described above, the object of the present invention, when the power is cut off while leaving the house or office lamps such as fluorescent lamps are not turned off immediately, but after the arbitrary illumination for a certain time is turned off It is possible to maintain the brightness of the room for a certain time even if the power is cut off.However, it is a means to delay the power cutoff. To provide.

따라서, 본 발명에 의하면, VDC 전압다운(Down)방식으로 회로를 구성하므로 회로구성이 간단해지면서 기존과 동일한 효과를 얻을 수 있으며, 저온 저전압 등 악조건 환경속에서도 램프가 보다 안정적으로 동작하게 할 수 있다.Therefore, according to the present invention, since the circuit is configured by the VDC voltage down method, the circuit configuration can be simplified, and the same effect as the conventional one can be obtained, and the lamp can be operated more stably even in a bad environment such as low temperature and low voltage. .

이와 같은 목적을 달성하기 위한 본 발명은 입력되는 AC전원을 정류 및 평활하여 DC전압으로 변환시키는 EMI 필터 및 정류 평활부와, 상기 EMI 필터 및 정류 평활부의 출력단에 접속되어 안정기 내부의 콘덴서 및 인덕터에 의해 왜곡된 역율 및 고조파를 보정하기 위한 역율 개선부와, 상기 역율 개선부를 통해 출력되는 인버터를 스위칭하기 위한 신호를 발생하여 드라이브하고, DC전압을 고주파의 구형파로 변환 시키는 발진, 인버터 드라이브부 및 스위칭부와, 상기 인버터 스위칭부의 출력단에 접속되어 L-C공진에 의해 형성된 고주파 AC전류를 안정적으로 램프에 공급해 주는 램프 출력부와, 상기 램프 출력부의 램프불량 및 출력 이상으로 과전류가 흐를 경우 이를 감지하여 안정기 동작을 정지시켜 안정기를 보호해 주는 보호 회로부로 구성된 것에 있어서, 상기 AC입력단과 역율개선부 출력단에 접속되어 스위치 오프시 이를 감지하여 일정시간동안 저조도 및 일정조도를 유지하다가 릴레이 동작을 멈추어 소등시키는 조도 유지 지연부를 포함하여 구성함을 특징으로 한다.The present invention for achieving the above object is to rectify and smooth the input AC power is converted into a DC voltage EMI filter and rectification smoothing unit, and connected to the output terminal of the EMI filter and rectifying smoothing unit to the capacitor and inductor inside the ballast. Power factor correction unit for correcting the power factor and harmonics distorted by the power factor and a signal for switching the inverter output through the power factor improvement unit, and driving the inverter to convert a DC voltage into a square wave of high frequency, inverter drive unit and switching And a lamp output unit connected to an output terminal of the inverter switching unit to stably supply a high frequency AC current formed by LC resonance to the lamp, and when the overcurrent flows beyond the lamp failure and output of the lamp output unit, the ballast operates. Consisting of a protection circuit that protects the ballast by stopping Further characterized in that the illumination unit comprises maintaining the delay of the stop relay off while maintaining a constant and low light intensity for a predetermined time is connected to the AC input terminal and the power factor improvement part detects the output terminal when the off switch.

본 발명은 상기 조도 유지 지연부가, 수동 온/오프 스위치부의 오프 상태를 감지하기 위한 스위치 오프 신호 감지부와, 상기 스위치 오프 신호 감지부의 출력단에 접속되어 입력되는 전압 레벨을 감지하기 위한 정류 및 평활 전압 레벨 감지부와, 상기 정류 및 평활 전압 레벨 감지부의 전압 감지에 따른 조도를 콘트롤하기 위한 임의 조도레벨 콘트롤 회로부와, 상기 정류 및 평활 전압 레벨 감지부에 의해 감지된 전압 레벨에 따라 램프의 점등상태를 지연시키는 동작 오프 회로부를 포함하여 구성함을 특징으로 한다.The present invention provides a switch-off signal detector for detecting an off state of the passive on / off switch unit, and a rectified and smoothed voltage for sensing a voltage level connected to an output terminal of the switch-off signal detector. A lighting level of the lamp according to a voltage level detected by a level sensor, an arbitrary illuminance level control circuit for controlling illuminance according to voltage sensing of the rectifying and smoothing voltage level detecting unit, and the voltage level detected by the rectifying and smoothing voltage level detecting unit. And a delayed operation off circuit portion.

이하, 본 발명의 실시 예를 첨부도면을 참고로 하여 상세히 설명하면 다음과 같다. Hereinafter, an embodiment of the present invention will be described in detail with reference to the accompanying drawings.

도 1은 본 발명의 전체적인 블록 구성도, 도 2는 도 1의 조도 유지 지연부의 블록도, 도 3은 본 발명의 실시예를 나타낸 상세 회로도이다.1 is an overall block diagram of the present invention, FIG. 2 is a block diagram of the illumination sustaining delay unit of FIG. 1, and FIG. 3 is a detailed circuit diagram showing an embodiment of the present invention.

이에 도시된 바와 같이, 본 발명은 입력되는 AC전원을 정류 및 평활하여 DC전압으로 변환시키는 EMI 필터 및 정류 평활부(1)가 구비되어 전원선을 통하여 입력되는 서지 및 노이즈와 안정기 동작시 발생되는 노이즈를 밖으로 유출되지 않게 한다.As shown in the drawing, the present invention is provided with an EMI filter and a rectifying smoothing unit (1) for rectifying and smoothing the input AC power to a DC voltage, which is generated during operation of a surge and noise input through a power line and a ballast. Do not let noise leak out.

상기 EMI 필터 및 정류 평활부(1)의 출력단에는 역율 개선부(2)가 접속되어 안정기 내부의 콘덴서 및 인덕터에 의해 왜곡된 역율 및 고조파를 보정한다.The power factor correcting unit 2 is connected to the output terminal of the EMI filter and the rectifying smoother 1 to correct the power factor and harmonics distorted by the capacitor and the inductor inside the ballast.

상기 역율 개선부(2)의 출력단에는 인버터를 스위칭하기 위한 신호를 발생하여 드라이브하고, DC전압을 고주파의 구형파로 변환시키는 발진,인버터 드라이브 스위칭부(3)가 구비된다. The output terminal of the power factor improving unit 2 is provided with an oscillation and inverter drive switching unit 3 for generating and driving a signal for switching an inverter and converting a DC voltage into a square wave of high frequency.

상기 발진,인버터 드라이브 스위칭부(3)는 실시예(도 3참조)로 하나의 발진소자(IC1)를 사용하고 이의 출력단에 트랜스(T1)를 통해 FET(Q1)를 접속하고, 다른 출력단에 저항(R19)을 통해 FET(Q2)를 접속하여 구성된다.The oscillation and inverter drive switching unit 3 uses one oscillation element IC1 as an embodiment (see FIG. 3), connects the FET Q1 to the output terminal thereof through a transformer T1, and resistors the other output terminals. The FET Q2 is connected via R19.

상기 발진, 인버터 및 드라이브 스위칭부(3)의 출력단에는 램프 출력부(4)가 접속되어 있어 L-C공진에 의해 형성된 고주파 AC전류를 안정적으로 램프에 공급해 준다.The output terminal of the oscillation, the inverter and the drive switching unit 3 is connected to the lamp output unit 4 to stably supply the high frequency AC current formed by the L-C resonance to the lamp.

상기 램프 출력부(4)의 출력단에는 램프불량 및 출력 이상으로 과전류가 흐를 경우 이를 감지하여 안정기 동작을 정지시켜 안정기를 보호해 주는 보호 회로부(6)가 구비된다.The output terminal of the lamp output unit 4 is provided with a protection circuit unit 6 which detects when an overcurrent flows due to a lamp failure and an output abnormality and stops the ballast operation to protect the ballast.

상기 AC입력단과 발진 인버터 드라이브 스위칭부(3)사이에는 스위치 오프시 이를 감지하여 VDC전압을 Down 시켜 일정시간동안 임의조도를 유지하다가 전원을 오프시켜 주는 조도 유지 지연부(5)가 구비되어 구성된다.Between the AC input terminal and the oscillating inverter drive switching unit 3 is provided with an illuminance maintenance delay unit 5 which senses this when switching off and turns down the VDC voltage to maintain arbitrary illuminance for a predetermined time and then turn off the power. .

도 2는 상기 조도 유지 지연부(5)의 상세 블록구성도로, 수동 온/오프 스위치의 오프상태를 감지하기 위한 스위치 오프신호 감지부(10)가 구비되고, 상기 수동 스위치 오프 감지부(10)의 출력단에는 입력되는 정류 및 평활전압의 레벨을 감지하기 위한 정류 및 평활 전압 레벨 감지부(11)가 구비된다. FIG. 2 is a detailed block diagram of the illuminance holding delay unit 5 and includes a switch off signal detecting unit 10 for detecting an off state of a manual on / off switch, and the manual switch off detecting unit 10. The output terminal of the rectification and smoothing voltage level detection unit 11 for detecting the level of the rectified and smoothed voltage is provided.

또한, 상기 정류 및 평활 전압 레벨 감지부(11)의 출력단에는 전압 감지에 따른 조도를 콘트롤하기 위한 임의 조도 레벨 콘트롤 회로부(13)가 구비되고, 상기 정류 및 평활 전압 레벨 감지부(11)에 의해 감지된 전압 레벨에 따라 보조 전원 스위치의(Relay) 온/오프를 소정시간 지연 및 제어하기 위한 동작 오프 회로부(12)가 구비된다.In addition, the output terminal of the rectifying and smoothing voltage level detecting unit 11 is provided with an arbitrary illuminance level control circuit 13 for controlling the illuminance according to the voltage sensing, by the rectifying and smoothing voltage level detecting unit 11 The operation off circuit unit 12 is provided to delay and control the on / off of the auxiliary power switch according to the sensed voltage level for a predetermined time.

상기 조도 유지 지연부(5)가, 도 3의 실시예에 도시된 바와 같이, 게이트가 스위치에 접속되어 상기 스위치 오프시 게이트전압이 동작전압 이하로 떨어지면서 오프되는 FET(Q5)와, 상기 FET(Q5)의 양단에 접속되어 FET(Q5)전압을 다운시키는 저항(R17)과, 상기 스위치에 접속되어 스위치 오프시 전류가 차단되는 제너다이오드(ZD1)와, 상기 FET(Q5)의 전압다운시 저항(R3)을 통해 방전되는 콘덴서(C8)와, 상기 콘덴서(C8)의 방전에 따라 전압이 다운되는 FET(Q4)와, 상기 FET(Q4)가 방전되면 릴레이접점(RELAY1)을 오프시키는 릴레이코일(RELAY1)을 포함하여 구성된다.As shown in the embodiment of Fig. 3, the illuminance holding delay unit 5 has a FET Q5 which is turned off when the gate is connected to the switch so that the gate voltage falls below the operating voltage when the switch is turned off, and the FET A resistor R17 connected to both ends of Q5 to lower the FET Q5 voltage, a Zener diode ZD1 connected to the switch to cut off the current when the switch is off, and at the time of voltage down of the FET Q5. A capacitor C8 discharged through the resistor R3, a FET Q4 whose voltage is reduced in accordance with the discharge of the capacitor C8, and a relay for turning off the relay contact RELAY1 when the FET Q4 is discharged. It is comprised including the coil RELAY1.

이와 같이 구성된 본 발명의 작용을 상세회로도인 도 3을 참고로 하여 설명하면 다음과 같다.Referring to Figure 3, which is a detailed circuit diagram of the operation of the present invention configured as described above are as follows.

먼저, 가정이나 사무소 등의 벽에 통상적으로 설치되는 수동 온/오프 스위치를 온시키면 형광등이 점등된다.First, when a manual on / off switch normally installed on a wall of a home or an office is turned on, a fluorescent lamp is turned on.

즉, 온/오프 스위치 온시 AC전원이 안정기에 입력되면, EMI 필터 및 정류 평활부(1)를 통해 AC전원이 정류 및 평활되어 DC전원으로 변환된다.That is, when the AC power is input to the ballast when the on / off switch is turned on, the AC power is rectified and smoothed through the EMI filter and the rectifying smoothing unit 1 to be converted into DC power.

또한, 역율 개선부(2)를 통하면서 안정기 내부의 콘덴서 및 인덕터에 의해 왜곡된 역율 및 고조파가 보정된다.Further, the power factor and harmonics distorted by the capacitor and the inductor inside the ballast are corrected through the power factor improving unit 2.

그리고 발진, 인버터 드라이브 및 스위칭부(3)를 통해 인버터를 스위칭하기 위한 신호가 발생되므로 발진, 인버터 드라이브 및 스위칭부(3)가 스위칭되어 상기 EMI필터 및 정류 평활부(1)를 통해 정류 및 평활된 DC전압이 고주파의 구형파로 변환된다.Since a signal for switching the inverter is generated through the oscillation, the inverter drive, and the switching unit 3, the oscillation, the inverter drive, and the switching unit 3 are switched to rectify and smooth through the EMI filter and the rectification smoothing unit 1. The converted DC voltage is converted into a high frequency square wave.

또한, 발진, 인버터 드라이브 및 스위칭부(3)의 출력단에 접속된 램프 출력부(4)에서는 L-C공진에 의해 형성된 고주파 AC전류를 안정적으로 램프에 공급해 주며, 상기 램프 출력부(4)의 출력단에는 보호 회로부(6)가 접속되어 있어 램프불량 및 출력 이상시 과전류가 흐를 경우 이를 감지하여 안정기 동작을 정지시킨다.In addition, the lamp output unit 4 connected to the output terminal of the oscillation, inverter drive, and switching unit 3 supplies the high frequency AC current formed by LC resonance to the lamp stably, and at the output terminal of the lamp output unit 4 The protection circuit unit 6 is connected to detect the occurrence of overcurrent in case of lamp failure and output abnormality, and stops the ballast operation.

즉, 스위치 온시의 동작은 다음과 같다.That is, the operation at the switch-on is as follows.

스위치가 온되면 저항(R1)(R2)에 의해 분압된 AC전압이 다이오드(D16)를 통해 반파 정류되고 콘덴서(C6)에 의해 평활되어 DC전압을 만들고, 전압이 제너다이오드(ZD1)의 제너전압 이상일 경우 전류가 흘러 콘덴서(C8)에 충전되면 FET(Q4)를 온시켜 릴레이 코일(RELAY1 Coil)에 전류가 흐르고 릴레이(RELAY1)가 동작하여 접점이 바뀌면서 100%조도로 램프(LAMP)가 점등상태를 유지하게 된다.When the switch is turned on, the AC voltage divided by the resistors R1 and R2 is half-wave rectified through the diode D16 and smoothed by the capacitor C6 to form a DC voltage, and the voltage is a zener voltage of the zener diode ZD1. In case of abnormality, when current flows and the capacitor C8 is charged, the FET Q4 is turned on so that the current flows through the relay coil RELAY1 Coil and the relay RELAY1 operates to change the contact point, so the lamp is turned on at 100% illuminance. Will be maintained.

한편, 사용자가 방이나 사무소에서 나오면서 스위치를 오프시키면 램프(LAMP)가 바로 소등되지 않고 일정시간 저조도를 유지한 후 완전 소등되는 것으로, 스위치를 오프시키면 FET(Q5)의 게이트전압이 동작전압 이하로 떨어지면서 FET(Q5)가 오프된다.On the other hand, when the user turns off the switch while leaving the room or office, the lamp is not turned off immediately but is kept off after maintaining low light for a certain time. When the switch is turned off, the gate voltage of the FET Q5 is lower than the operating voltage. FET Q5 is turned off while falling.

또한, 상기 FET(Q5)의 양단에 접속되어 있는 저항(R17)을 거쳐 VDC전압이 다운되어 저조도를 유지하며 제너다이오드(ZD1)를 통해 흐르던 전류는 차단되고 콘덴서(C8)는 저항(R3)을 통해 방전되어 일정시간이 지난 후 FET(Q4)의 게이트 전압이 동작전압 이하로 떨어져 FET(Q4)가 오프된다.In addition, the VDC voltage is lowered through the resistor R17 connected to both ends of the FET Q5 to maintain low illuminance, and the current flowing through the zener diode ZD1 is cut off, and the capacitor C8 is connected to the resistor R3. After a predetermined time elapses through the discharge, the gate voltage of the FET Q4 falls below the operating voltage and the FET Q4 is turned off.

따라서, FET(Q4)가 온되어 있을 때 릴레이(Relay1)로 흐르던 전류가 차단되면서 릴레이(Relay1)의 접점이 오프로 바뀌어 램프(LAMP)가 완전 소등된다.Therefore, when the FET Q4 is turned on, the current flowing to the relay Relay1 is cut off, and the contact of the relay Relay1 is turned off so that the lamp LAMP is completely turned off.

이와 같은 본 발명은 VDC전압다운 방식에 의해 스위치 오프시 일정시간 저조도를 유지하게 한 후 램프(LAMP)를 소등시킬 수 있어 사용상의 편리 기능을 제공할 수 있다.The present invention as described above can maintain a low light for a predetermined time when the switch-off by the VDC voltage down method to turn off the lamp (LAMP) can provide a convenient function in use.

이상에서 상세히 설명한 바와 같은 본 발명은 수동스위치 오프에 따른 전원 차단시 램프가 바로 소등되지 않고 일정 시간 동안 임의조도 상태(또는 저조도 상태)를 유지한 후 소등됨으로써 램프 소등 후 다시 집이나 사무소에 들어갈 경우에도 전원을 다시 온 시키지 않아도 일정시간 실내에 임의 조도가 유지되므로 필요한 일을 볼 수 있음은 물론 다시 스위치를 온 시키지 않아도 되므로 전력을 절감할 수 있는 등의 유익한 효과가 있다.The present invention as described in detail above, when the power is turned off according to the manual switch-off, the lamp is not immediately turned off, but after being turned off after maintaining a certain illuminance state (or a low illuminance state) for a predetermined time, when the lamp is turned off and then enters home or office again. Even when the power is not turned on again, since the arbitrary illumination is maintained in the room for a certain time, it is possible to see the necessary work as well as to save power because it does not have to switch on again.

Claims (3)

삭제delete 입력되는 AC전원을 정류 및 평활하여 DC전압으로 변환시키는 EMI 필터 및 정류 평활부(1)와, 상기 EMI 필터 및 정류 평활부의 출력단에 접속되어 안정기 내부의 콘덴서 및 인덕터에 의해 왜곡된 역율 및 고조파를 보정하기 위한 역율 개선부(2)와, 상기 역율 개선부(2)를 통해 출력되는 인버터를 스위칭하기 위한 신호를 발생하여 인버터 스위치를 드라이브하고, 평활된 DC전압을 구형파로 변환시키는 발진, 인버터 드라이브부 및 스위칭부(3)와, 상기 인버터 스위칭부(3)의 출력단에 접속되어 L-C공진에 의해 형성된 고주파 AC전류를 안정적으로 램프에 공급해 주는 램프 출력부(4)와, 램프의 점등상태를 일정시간 지연시켜 오프시키는 조도 유지 지연부(5)와, 상기 램프 출력부(4)의 램프불량 및 출력 이상으로 과전류가 흐를 경우 이를 감지하여 안정기 동작을 정지시켜 안정기를 보호해 주는 보호 회로부(6)로 구성된 것에 있어서,EMI filter and rectification smoothing unit (1) for rectifying and smoothing the input AC power to convert to DC voltage, and connected to the output terminal of the EMI filter and rectifying smoothing unit, and the power factor and harmonics distorted by the capacitor and inductor inside the ballast An oscillation and inverter drive generating a signal for switching an inverter output through the power factor improving unit 2 and a inverter for driving the inverter switch, and converting a smoothed DC voltage into a square wave. The lamp output unit 4, which is connected to the unit and the switching unit 3, the output terminal of the inverter switching unit 3, stably supplies the high frequency AC current formed by LC resonance to the lamp, and the lighting state of the lamp is fixed. Stops the ballast operation by detecting an overcurrent flow due to the lamp maintenance delay unit 5 and the lamp output unit 4 which are turned off by delaying the time. In which the protection circuit part 6 protects the ballast, 상기 조도 유지 지연부(5)가, 게이트가 스위치에 접속되어 상기 스위치 오프시 게이트전압이 동작전압 이하로 떨어지면서 오프되는 FET(Q5)와, 상기 FET(Q5)의 양단에 접속되어 FET(Q5)전압을 다운시키는 저항(R17)과, 상기 스위치에 접속되어 스위치 오프시 전류가 차단되는 제너다이오드(ZD1)와, 상기 FET(Q5)의 전압다운시 저항(R3)을 통해 방전되는 콘덴서(C8)와, 상기 콘덴서(C8)의 방전에 따라 전압이 다운되는 FET(Q4)와, 상기 FET(Q4)가 방전되면 릴레이접점(RELAY1)을 오프시키는 릴레이코일(RELAY1)을 포함하여 구성된 것을 특징으로 하는 스위치 오프시 일정시간 임의조도 유지회로.The illuminance holding delay unit 5 is connected to both ends of the FET Q5 and the gate is connected to the switch, and is turned off when the gate voltage drops below the operating voltage when the switch is turned off. A capacitor (R8) connected to the switch, a zener diode (ZD1) connected to the switch to cut off the current when the switch is turned off, and a capacitor (C8) discharged through the resistor (R3) at the voltage-down of the FET (Q5). ), A FET Q4 having a voltage down with the discharge of the capacitor C8, and a relay coil RELAY1 for turning off the relay contact RELAY1 when the FET Q4 is discharged. Arbitrary illuminance holding circuit for a certain time when switching off. 삭제delete
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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102062833A (en) * 2010-12-03 2011-05-18 北京统合万方科技有限公司 Programmable airplane power supply characteristic comprehensive test apparatus

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KR100274947B1 (en) 1998-04-28 2000-12-15 안치명 A fade-out switching circuit and there method of ac. lamp
JP2001110588A (en) 1999-09-06 2001-04-20 Fairchild Korea Semiconductor Ltd Lamp sysetm equipped with stabilizer
KR100523406B1 (en) 2005-01-19 2005-10-24 태원전기산업 (주) A limited time illumination keep curcuit a time of switch off
KR20060086461A (en) * 2005-01-26 2006-07-31 주식회사 유니룩스 An automatic lamp off curcuit when a power off

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Publication number Priority date Publication date Assignee Title
KR100274947B1 (en) 1998-04-28 2000-12-15 안치명 A fade-out switching circuit and there method of ac. lamp
JP2001110588A (en) 1999-09-06 2001-04-20 Fairchild Korea Semiconductor Ltd Lamp sysetm equipped with stabilizer
KR100523406B1 (en) 2005-01-19 2005-10-24 태원전기산업 (주) A limited time illumination keep curcuit a time of switch off
KR20060086461A (en) * 2005-01-26 2006-07-31 주식회사 유니룩스 An automatic lamp off curcuit when a power off

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102062833A (en) * 2010-12-03 2011-05-18 北京统合万方科技有限公司 Programmable airplane power supply characteristic comprehensive test apparatus
CN102062833B (en) * 2010-12-03 2015-05-20 北京航天万方科技有限公司 Programmable airplane power supply characteristic comprehensive test apparatus

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