JP2013012452A - Power supply device for lighting apparatus - Google Patents

Power supply device for lighting apparatus Download PDF

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JP2013012452A
JP2013012452A JP2011156110A JP2011156110A JP2013012452A JP 2013012452 A JP2013012452 A JP 2013012452A JP 2011156110 A JP2011156110 A JP 2011156110A JP 2011156110 A JP2011156110 A JP 2011156110A JP 2013012452 A JP2013012452 A JP 2013012452A
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current
dimmer
control element
power control
power supply
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Masao Hirai
正夫 平井
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SUN EH ELECTRIC CO
Sun Eh Electric Co Ltd
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Sun Eh Electric Co Ltd
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Abstract

PROBLEM TO BE SOLVED: To provide a power supply device for a lighting apparatus, enabling stable lighting control operation without light flicker of an LED lighting apparatus and a fluorescent lamp inverter lighting apparatus, having large power consumption, by means of a phase control dimmer.SOLUTION: A power control element Q1 is disposed between a diode bridge DB, disposed in an AC input unit of a power supply, for performing full-wave rectification of commercial AC power supply for the power supply incorporated in an LED lighting apparatus 4 and a capacitor C4 for rectification. Simultaneously with a triac T in a phase control dimmer 1 turning ON, the power control element Q1 starts conduction operation, and further, the power control element Q1 is driven not to make an oscillation current flow into the input current of the power supply. By this, the triac T in the dimmer secures phase control operation, so as to solve the problem.

Description

本発明は、商用交流電源を２線式位相制御方式の調光器で位相制御することで調光することが可能なＬＥＤや蛍光灯などを点灯するための照明器具用電源装置に関する事である。  The present invention relates to a power supply device for a lighting fixture for lighting an LED or a fluorescent lamp that can be dimmed by phase-controlling a commercial AC power source with a dimmer of a two-wire phase control system. .

商用交流電源を位相制御することで白熱灯などの照明器具を調光する２線式位相制御方式の調光器は、調光用の信号線を別個に配線する必要がなく照明器具との間の配線が２線で済むため産業上非常に有用である。  A two-wire phase control dimmer that dimmes a lighting fixture such as an incandescent lamp by controlling the phase of a commercial AC power supply does not require a separate signal line for dimming. This is very useful industrially because it requires only two wires.

しかしながら、白熱灯などの純粋な抵抗負荷でなくＬＥＤ照明器具や蛍光灯インバータ照明器具用の電源装置が負荷の場合、これらの電源装置の入力にあるノイズフィルター回路の構成部品であるコンデンサや整流後の平滑用コンデンサと、位相制御方式の調光器に内蔵されているノイズ低減のためのインダクタとの間の振動電流によって、調光器のトライアックの保持電流が確保できなくなる現象によるＬＥＤなどの照明素子のちらつきの発生が問題となる。  However, when the power supply for LED lighting fixtures and fluorescent lamp inverter lighting fixtures is a load rather than a pure resistance load such as an incandescent lamp, a capacitor that is a component of the noise filter circuit at the input of these power supply devices or after rectification LED lighting due to the phenomenon that the holding current of the dimmer triac cannot be secured due to the oscillating current between the smoothing capacitor and the inductor for noise reduction built in the phase control dimmer The occurrence of element flickering becomes a problem.

小容量の電球型蛍光灯や電球型ＬＥＤ灯などは入力ラインにダンピング回路を挿入する事で前記の振動電流の発生を防止することなどで、対応しているものが商品として既に販売されている。（特許文献１）  Small-capacity bulb-type fluorescent lamps, bulb-type LED lights, etc. are already sold as compatible products by preventing the occurrence of the above-mentioned oscillating current by inserting a damping circuit into the input line . (Patent Document 1)

近年特に省エネの流れの中、ベース照明として直管型の銅鉄式安定器方式の蛍光灯などの代替にＬＥＤ照明などが採用されるケースが極端に増加してきた。したがって２線式位相制御方式の調光器を利用することで、従来の蛍光灯用の屋内配線に調光用の制御線を新しく敷設することなく調光ができることは、省エネの推進にとって非常に有用なことであるのは言うまでもない。  In recent years, especially in the trend of energy saving, the number of cases in which LED lighting or the like is employed as a base lighting instead of a straight tube type copper iron ballast type fluorescent lamp has been extremely increased. Therefore, the use of a two-wire phase control system dimmer enables dimming without newly installing a dimming control line in the conventional indoor wiring for fluorescent lamps. It goes without saying that it is useful.

このＬＥＤ照明器具や蛍光灯インバータ照明器具用の電源装置の容量は照明器具の照度も高いため、電球型ＬＥＤ灯に比べはるかに大きい電源容量となっている。そのため、電源の入力電流も電球型ＬＥＤ灯より多く、位相制御方式の調光器に対応しようとすると前記のダンピング回路に含まれる抵抗の損失が大きくなり実用性がなかった。  The capacity of the power supply device for the LED lighting apparatus and the fluorescent lamp inverter lighting apparatus is much larger than that of the bulb-type LED lamp because the illuminance of the lighting apparatus is high. For this reason, the input current of the power source is larger than that of the light bulb type LED lamp, and when it is attempted to cope with the phase control type dimmer, the loss of the resistance included in the damping circuit becomes large and there is no practicality.

特開２０１１−５４５３７号 公報  JP 2011-54537 A

現在市販されている位相制御方式の調光器の代表的な回路の主要構成は図１の位相制御方式の調光器１に示してあるように、位相制御を行う代表的なスイッチ素子であるトライアックＴを設け、さらにトライアックＴの導通した瞬間に発生するノイズ低減のためのインダクタＬ１を直列に配しているのが一般的である。  The main configuration of a typical circuit of a phase control dimmer currently on the market is a typical switch element that performs phase control, as shown in the phase control dimmer 1 of FIG. In general, a triac T is provided, and an inductor L1 for reducing noise generated at the moment when the triac T is conducted is arranged in series.

この位相制御方式の調光器１が純粋な抵抗負荷である白熱灯では起こらなかった問題がＬＥＤ照明器具や蛍光灯インバータ照明器具用の電源装置では、それ自体の雑音低減のためのノイズフィルター回路の構成部品であるコンデンサや整流後の平滑用コンデンサが具備されているため、前記調光器のインダクタＬ１との間で次のような問題が発生する。  The problem that this phase control type dimmer 1 did not occur with an incandescent lamp, which is a pure resistance load, is a noise filter circuit for reducing noise itself in a power supply device for an LED lighting apparatus or a fluorescent lamp inverter lighting apparatus. Therefore, the following problems occur with the inductor L1 of the dimmer.

以下、ＬＥＤ照明器具を例にとって説明をする。図１は位相制御方式の調光器１でＬＥＤ照明器具４を駆動した場合の一例である。位相制御を行っているトライアックＴが導通した瞬間の調光器の出力電圧と出力電流を図２のａ区間拡大波形で示している。インダクタＬ１とコンデンサＣ２あるいはコンデンサＣ３の間で発生する振動電流が流れようとし、（波形１−１）で示しているとおり入力電流が０Ａに減少するため、トライアックＴの電流は保持電流を確保できなくなり、導通していたトライアックＴはＯＦＦする。トライアックＴが仮にＯＦＦしなかったとすると入力電流は図１の点線の振動波形（波形１−１）をたどる事となる。一旦トライアックＴがＯＦＦすると位相制御方式の調光器１のトリガ素子が再度動作する短い時間後トライアックＴが再トリガされることが繰返され、ＬＥＤ照明器具には光のちらつきが発生する。  Hereinafter, an LED lighting apparatus will be described as an example. FIG. 1 shows an example of a case where an LED lighting apparatus 4 is driven by a phase control type dimmer 1. The output voltage and output current of the dimmer at the moment when the TRIAC T performing phase control is turned on are shown as an enlarged waveform in the section a in FIG. Since the oscillating current generated between the inductor L1 and the capacitor C2 or the capacitor C3 tends to flow, and the input current decreases to 0A as shown in (waveform 1-1), the current of the triac T can secure the holding current. The triac T that has been conducted is turned off. If the triac T is not turned off, the input current follows the vibration waveform (waveform 1-1) shown by the dotted line in FIG. Once the TRIAC T is turned OFF, the TRIAC T is repeatedly re-triggered after a short time when the trigger element of the phase control type dimmer 1 operates again, and light flickering occurs in the LED lighting apparatus.

（特許文献１）ではＬＥＤ照明器具の入力端に直列に抵抗器を配し、さらにコンデンサ及びインダクタを直並列の組み合わせによりこの問題を解決している。図３にこの回路を組み込んだ照明器具の各部電圧電流波形を表している。この入力電流を図３の（波形２−１）のように振動を低減することで、調光器での位相制御動作を確実にしている。  (Patent Document 1) solves this problem by providing a resistor in series with the input end of the LED lighting fixture and further combining a capacitor and an inductor in series and parallel. FIG. 3 shows a voltage / current waveform of each part of a lighting fixture incorporating this circuit. By reducing the vibration of this input current as shown in (waveform 2-1) in FIG. 3, the phase control operation in the dimmer is ensured.

この方法は、少ない消費電力の電球型ＬＥＤ照明器具などでは、入力電流も少なく前記の入力端に直列に入れた抵抗器の損失もわずかで、問題もなく動作する事ができる。しかしながら、たとえば事務所などで使用されるベース照明としてのＬＥＤ照明器具などは消費電力も多く、したがって入力電流も多いため、直列に抵抗器を配した場合、抵抗の電力ロスも大きく位相制御方式の調光器で調光を行うことの実用化が困難であった。  With this method, in a light bulb type LED lighting apparatus with low power consumption, the input current is small and the loss of the resistor placed in series with the input terminal is small, so that it can operate without any problem. However, for example, an LED luminaire as a base lighting used in an office or the like consumes a large amount of power and therefore has a large input current. Therefore, when a resistor is arranged in series, the power loss of the resistor is large and the phase control method is large. It has been difficult to put light into practice using a dimmer.

請求項１の発明は、商用交流入力を調光器で位相制御された交流を入力とし、ダイオードブリッジで両波整流された出力の一端はパワー制御素子を経由し、抵抗器とコンデンサの直列回路を並列に接続した、平滑用コンデンサに接続されたのちコンバータを経て照明用ＬＥＤや蛍光ランプを駆動する照明器具用電源装置において、調光器のトライアックがターンＯＮし、同時にパワー制御素子の導通動作を開始し、そこを流れる平滑用コンデンサの充電電流や負荷電流のピーク電流を押さえるためにソフトにパワー制御素子を敢えて活性領域を通過させることで調光器の振動電流を低減し、平滑コンデンサの充電が終了した直後の電流低下は前記抵抗器とコンデンサの直列回路に流れる充電電流で補うことにより、調光器のトライアックに流れる電流を保持電流以下にならないようにすることを特徴としている。  According to the first aspect of the present invention, a commercial alternating current input is an alternating current whose phase is controlled by a dimmer, and one end of an output rectified in both waves by a diode bridge is connected to a series circuit of a resistor and a capacitor via a power control element. Are connected in parallel, connected to a smoothing capacitor, and then the lighting device power supply device that drives the LED and fluorescent lamp for lighting through the converter, the triac of the dimmer is turned on and the power control element is turned on at the same time. In order to suppress the charging current of the smoothing capacitor flowing through it and the peak current of the load current, the power control element is intentionally passed through the active region to reduce the oscillation current of the dimmer, The current drop immediately after the charging is completed is compensated by the charging current flowing in the series circuit of the resistor and the capacitor, so that the current flows to the dimmer of the dimmer. It is characterized in that so as not current below the holding current that.

この発明の目的は、位相制御方式の調光器に内蔵されているチョークコイルと、この調光器で位相制御された交流を入力とする照明器具用電源装置に内蔵される交流入力間あるいはダイオードブリッジ整流後の平滑コンデンサ等の間で、調光器のトライアックのターンＯＮ時に発生する振動電流によりトライアックの保持電流を下回るために発生する、トライアックのＯＦＦを防止する事でＬＥＤなどの照明素子のちらつきの発生を防いでいる。  SUMMARY OF THE INVENTION An object of the present invention is to provide a choke coil incorporated in a phase control type dimmer, and an AC input or a diode incorporated in a power supply device for a luminaire that receives an alternating current phase controlled by the dimmer. By preventing the triac from being turned off due to the vibration current generated when the dimmer triac is turned on between the smoothing capacitors after bridge rectification, the triac is turned off. Prevents flickering.

請求項２の発明は、請求項１のパワー制御素子の導通動作の方法で、パワー制御素子を流れる平滑用コンデンサの充電電流や負荷電流のピーク電流を押さえるために定電流に制御することでパワー制御素子を敢えて活性領域を通過させ、調光器の振動電流を低減し、平滑コンデンサの充電が終了した直後の電流低下は前記抵抗器とコンデンサの直列回路に流れる充電電流で補うことにより、調光器のトライアックに流れる電流を保持電流以下にならないようにしたことを特徴としている。  According to a second aspect of the present invention, the power control element according to the first aspect of the present invention is controlled by a constant current in order to suppress the charging current of the smoothing capacitor flowing through the power control element and the peak current of the load current. The control element is intentionally passed through the active region to reduce the oscillating current of the dimmer, and the current drop immediately after the smoothing capacitor is charged is compensated by the charging current flowing in the series circuit of the resistor and the capacitor. It is characterized in that the current flowing through the triac of the optical device does not become lower than the holding current.

この発明の目的は、請求項１と同様に、位相制御方式の調光器に内蔵されているチョークコイルと、この調光器で位相制御された交流を入力とする照明器具用電源装置に内蔵される交流入力間あるいはダイオードブリッジ整流後の平滑コンデンサ等の間で、調光器のトライアックのターンＯＮ時に発生する振動電流によりトライアックの保持電流を下回るために発生する、トライアックのＯＦＦを防止する事でＬＥＤなどの照明素子のちらつきの発生を防いでいる。  The object of the present invention is the same as in the first aspect of the present invention, and is incorporated in a choke coil incorporated in a phase control type dimmer and a lighting apparatus power supply device that receives an alternating current phase controlled by the dimmer. To prevent the triac from being turned off due to the oscillating current generated when the dimmer triac is turned on between the alternating current input and the smoothing capacitor after rectification of the diode bridge. Thus, flickering of lighting elements such as LEDs is prevented.

請求項３の発明は、請求項１、請求項２の回路構成において、パワー制御素子を通過する前の交流入力間、あるいはダイオードブリッジで両波整流された出力の両端間に接続するコンデンサを少なくする目的で、ノイズフィルター回路をダイオードブリッジで両波整流した出力の一端はパワー制御素子を経由し平滑用コンデンサに接続された後に具備したことを特徴としている。  According to a third aspect of the present invention, in the circuit configuration of the first and second aspects, the number of capacitors connected between the AC input before passing through the power control element or between both ends of the output rectified by the diode bridge is reduced. For this purpose, one end of an output obtained by performing both-wave rectification of the noise filter circuit with a diode bridge is provided after being connected to a smoothing capacitor via a power control element.

請求項１、請求項２の回路を容易に実現するためには調光器からの位相制御された交流入力から、パワー制御素子を接続する回路の前に接続されるコンデンサで発生する振動電流をこのパワー制御素子の制御では防止できないため、できるだけ小さな値のコンデンサを接続する必要がある。また、特にノイズフィルター回路の一部を構成するコンデンサの値は一般的に大きく、そのため交流入力部に設置するのではなく、パワー制御素子のあとに構成させることでこれらの問題を回避している。  In order to easily realize the circuits of claim 1 and claim 2, an oscillating current generated by a capacitor connected before the circuit to which the power control element is connected from the phase-controlled AC input from the dimmer. Since it cannot be prevented by the control of the power control element, it is necessary to connect a capacitor having the smallest possible value. In particular, the value of the capacitor that constitutes a part of the noise filter circuit is generally large, so that these problems are avoided by installing it after the power control element rather than installing it at the AC input section. .

本発明は、ＬＥＤ照明器具に内蔵される電源の商用入力交流を両波整流するダイオードブリッジと、平滑整流用のコンデンサの間に配したパワー制御素子を電源の入力に振動電流が流れないようにＯＮさせることによって、市販の調光器に内蔵されているトライアックが正常に位相制御動作を確保する事ができるようになり、その結果たとえば事務所などのベース照明としてのＬＥＤ照明器具などの消費電力の多い照明器具を２線式位相制御方式の調光器で位相制御を行うことで容易に調光ができるようになり、省配線で省エネを推進できるため、産業上非常に有用である。  According to the present invention, a vibration control current does not flow to the input of a power source through a power control element arranged between a diode bridge for both-wave rectification of a commercial input AC of a power source built in an LED lighting fixture and a capacitor for smooth rectification. By turning it on, the TRIAC built in the commercially available dimmer can normally ensure the phase control operation, and as a result, for example, the power consumption of LED lighting fixtures as base lighting in offices etc. Light control can be easily performed by controlling the phase of a lighting fixture with a lot of light using a two-wire phase control system dimmer, and energy saving can be promoted with reduced wiring, which is very useful in industry.

調光器と調光器未対応照明器具を接続した回路図である。It is the circuit diagram which connected the dimmer and the lighting fixture non-corresponding lighting device. 調光器で調光器未対応の照明器具を駆動した場合の各部電圧電流波形。Voltage current waveform of each part when a lighting fixture that does not support dimmer is driven by a dimmer. 調光器で（特許文献１）による回路を組み込んだ照明器具を駆動した場合の各部電圧電流波形。The voltage current waveform of each part at the time of driving the lighting fixture incorporating the circuit by (patent document 1) with a light controller. 調光器で本発明の電源を内蔵した照明器具を接続した回路図である。It is a circuit diagram which connected the lighting fixture which incorporated the power supply of this invention with the dimmer. 本発明の回路のＱ１駆動回路の形態１。Embodiment 1 of the Q1 driving circuit of the circuit of the present invention. 本発明の回路のＱ１駆動回路の形態２。The form 2 of the Q1 drive circuit of the circuit of this invention. 本発明の回路のＱ１駆動回路の形態１で駆動した場合の各部電圧電流波形。The voltage current waveform of each part at the time of driving with the form 1 of the Q1 drive circuit of the circuit of this invention. 本発明の回路のＱ１駆動回路の形態２で駆動した場合の各部電圧電流波形。The voltage current waveform of each part at the time of driving with the form 2 of the Q1 drive circuit of the circuit of this invention.

以下に本発明の実施するための形態について説明する。図４に示すようにＬＥＤ照明器具４に内蔵される電源の商用交流電源を整流するダイオードブリッジＤＢを電源の交流入力部に配し、両波整流するダイオードブリッジＤＢと、整流用のコンデンサＣ４の間に配したＦＥＴやＩＧＢＴ、トランジスタに代表されるパワー制御素子Ｑ１を配し、位相制御方式の調光器１のトライアックＴがターンＯＮすると同時にパワー制御素子Ｑ１の導通動作を開始し、さらにパワー制御素子Ｑ１を電源装置の入力電流に振動電流が流れないように駆動することで調光器のトライアックＴが正常に位相制御動作を確保する事で課題を解決している。以下、パワー制御素子Ｑ１は一例として代表的な素子であるＦＥＴで説明を行う。  The form for implementing this invention is demonstrated below. As shown in FIG. 4, a diode bridge DB that rectifies a commercial AC power source of a power source built in the LED lighting apparatus 4 is arranged in the AC input portion of the power source, and a diode bridge DB that rectifies both waves and a rectifying capacitor C4 A power control element Q1 typified by an FET, IGBT, or transistor disposed between them is arranged, and at the same time as the triac T of the phase control dimmer 1 is turned on, the conduction operation of the power control element Q1 is started. By driving the control element Q1 so that no oscillating current flows in the input current of the power supply device, the triac T of the dimmer normally secures the phase control operation, thereby solving the problem. Hereinafter, the power control element Q1 will be described as an example of a typical element FET.

第一の形態として図５のＱ１駆動回路▲１▼７の動作を説明する。図７において、トライアックＴの導通した瞬間であるａ区間（波形３）の拡大波形であるコンデンサＣ４両端電圧（波形３−２）において、Ａで示す期間はコンデンサＣ４をある程度制限した充電電流になるようにパワー制御素子Ｑ１をソフトにＯＮする制御を行う。図５のパワー制御素子Ｑ１駆動回路▲１▼７の機能はＡの期間はトライアックＴが導通してダイオードブリッジＤＢの整流電圧が発生したことを検知しパワー制御素子Ｑ１を敢えて活性領域を通過させてターンＯＮロスを発生させながらソフトにＯＮさせていく。（波形（３−１）の入力電流波形のＡ区間の波形の形自体には意味がなく、ピーク電流が抑える事ができていれば調光器内蔵のインダクタＬ１の振動電流を発生させる励磁電流が抑えられ、目的は達している。）その結果コンデンサＣ４の電圧はソフトに上昇し、充電電流も抑えられる。コンデンサＣ４の充電が完了すると電流は急激に減少し、期間Ｂでは入力電流（波形３−１）に点線で示すようなわずかな振動波形が現れる。    The operation of the Q1 drive circuit {circle around (1)} 7 in FIG. 5 will be described as a first mode. In FIG. 7, in the voltage across the capacitor C4 (waveform 3-2), which is an enlarged waveform of the section a (waveform 3), which is the moment when the triac T is turned on, the charging current in which the capacitor C4 is limited to some extent during the period indicated by A. Thus, the power control element Q1 is controlled to be turned on softly. The function of the power control element Q1 driving circuit {circle around (1)} 7 in FIG. 5 is to detect that the triac T is turned on during the period A and the rectified voltage of the diode bridge DB is generated, and to let the power control element Q1 pass through the active region. And turn it on softly while generating turn-on loss. (The waveform itself of the A section of the input current waveform of the waveform (3-1) is meaningless, and if the peak current can be suppressed, the exciting current that generates the oscillating current of the inductor L1 with a built-in dimmer) As a result, the voltage of the capacitor C4 rises softly and the charging current is also suppressed. When the charging of the capacitor C4 is completed, the current rapidly decreases, and in the period B, a slight vibration waveform as shown by the dotted line appears in the input current (waveform 3-1).

この入力電流の振動波形が調光器の動作に影響を及ぼす場合は、振動波形が入力電流に出ないように期間ＢではコンデンサＣ４の充電が終了した直後の電流低下は抵抗器Ｒ５とコンデンサＣ５の直列回路に流れる充電電流で補うことにより、調光器のトライアックに流れる電流を保持電流以下にならないように期間Ｂでは入力電流（波形３−１）は実線で示すような振動波形の少ない波形となり、トライアックＴの保持電流が確保できる。このことにより、調光器１のトライアックＴは安定的に位相制御動作をする事が可能となる。なお、図４のコンデンサＣ２は本電源装置のノイズ除去のために必要な場合はできるだけ容量の少ない値を選定し、インダクタＬ１の間で発生する振動電流が動作に影響を与えないようにする必要がある。  When the vibration waveform of the input current affects the operation of the dimmer, the current drop immediately after the charging of the capacitor C4 ends in the period B so that the vibration waveform does not appear in the input current, the resistor R5 and the capacitor C5 In the period B, the input current (waveform 3-1) has a small oscillation waveform as shown by a solid line so that the current flowing in the triac of the dimmer does not become equal to or lower than the holding current by compensating for the charging current flowing in the series circuit. Thus, the holding current of the triac T can be secured. As a result, the TRIAC T of the dimmer 1 can stably perform the phase control operation. Note that the capacitor C2 in FIG. 4 should have a value as small as possible when it is necessary for noise removal of the power supply device, so that the oscillating current generated between the inductors L1 does not affect the operation. There is.

また、第二の形態として図６のようにダイオードブリッジＤＢによって整流されたあと、パワー制御素子Ｑ１のドレーン電流を一定に保つように電流検出抵抗Ｒ１をパワー制御素子Ｑ１のソースに接続し、その電流検出抵抗Ｒ１に流れる電流によって得られる電圧降下をフィードバックし、Ｑ１駆動回路▲２▼８にてドレーン電流が定電流になるようにパワー制御素子Ｑ１を敢えて活性領域を通過させてターンＯＮロスを発生させながらコントロールした結果、入力電流は図８のようにＡ期間は定電流となる。（（波形４−１）の実線）。ピーク電流が抑える事ができていれば調光器内蔵のインダクタＬ１の振動電流を発生させる励磁電流が抑えられ、目的は達している。）その結果コンデンサＣ４の電圧はある傾きをもって上昇し、充電電流も抑えられる。コンデンサＣ４の充電が完了すると電流は急激に減少し、期間Ｂでは入力電流（波形４−１）に点線で示すようなわずかな振動波形が現れる。  Further, as a second form, after being rectified by the diode bridge DB as shown in FIG. 6, the current detection resistor R1 is connected to the source of the power control element Q1 so as to keep the drain current of the power control element Q1 constant. The voltage drop obtained by the current flowing through the current detection resistor R1 is fed back, and the Q1 driving circuit {circle around (2)} 8 deliberately passes the power control element Q1 through the active region so that the drain current becomes a constant current. As a result of the control while being generated, the input current becomes a constant current during the period A as shown in FIG. (Solid line of (Waveform 4-1)). If the peak current can be suppressed, the exciting current that generates the oscillating current of the inductor L1 built in the dimmer can be suppressed, and the purpose has been achieved. As a result, the voltage of the capacitor C4 increases with a certain slope, and the charging current is also suppressed. When the charging of the capacitor C4 is completed, the current rapidly decreases, and in the period B, a slight vibration waveform as shown by the dotted line appears in the input current (waveform 4-1).

この入力電流の振動波形が調光器の動作に影響を及ぼす場合は、振動波形が入力電流に出ないように期間ＢではコンデンサＣ４の充電が終了した直後の電流低下は抵抗器Ｒ５とコンデンサＣ５の直列回路に流れる充電電流で補うことにより、調光器のトライアックに流れる電流を保持電流以下にならないように期間Ｂでは入力電流（波形４−１）は実線で示すような振動波形の少ない波形となり、トライアックＴの保持電流が確保できる。このことにより、調光器１のトライアックＴは安定的に位相制御動作をする事が可能となる。  When the vibration waveform of the input current affects the operation of the dimmer, the current drop immediately after the charging of the capacitor C4 ends in the period B so that the vibration waveform does not appear in the input current, the resistor R5 and the capacitor C5 In the period B, the input current (waveform 4-1) has a small oscillation waveform as shown by a solid line so that the current flowing in the triac of the dimmer does not become lower than the holding current by compensating for the charging current flowing in the series circuit. Thus, the holding current of the triac T can be secured. As a result, the TRIAC T of the dimmer 1 can stably perform the phase control operation.

１ 位相制御方式の調光器
２ ＬＥＤ駆動コンバータ
３ ＬＥＤ群
４ ＬＥＤ照明器具
５ 電源装置
６ ノイズフィルター回路
７ Ｑ１駆動回路▲１▼
８ Ｑ１駆動回路▲２▼
ＡＣ 商用交流電源
Ｔ トライアック
Ｃ１ コンデンサ
Ｃ２ コンデンサ
Ｃ３ コンデンサ
Ｃ４ コンデンサ
Ｃ５ コンデンサ
ＤＢ ダイオードブリッジ
Ｌ１ インダクタ
Ｑ１ パワー制御素子
Ｒ１ 電流検出抵抗
Ｒ２ 抵抗
Ｒ３ 抵抗DESCRIPTION OF SYMBOLS 1 Phase control dimmer 2 LED drive converter 3 LED group 4 LED lighting fixture 5 Power supply device 6 Noise filter circuit 7 Q1 drive circuit (1)
8 Q1 drive circuit (2)
AC commercial AC power supply T Triac C1 capacitor C2 capacitor C3 capacitor C4 capacitor C5 capacitor DB diode bridge L1 inductor Q1 power control element R1 current detection resistor R2 resistor R3 resistor

Claims (3)

商用交流入力を調光器で位相制御された交流を入力とし、ダイオードブリッジで両波整流された出力の一端はパワー制御素子を経由し、抵抗器とコンデンサの直列回路を並列に接続した、平滑用コンデンサに接続されたのちコンバータを経て照明用ＬＥＤや蛍光ランプを駆動する照明器具用電源装置において、調光器のトライアックがターンＯＮし、同時にパワー制御素子の導通動作を開始し、そこを流れる平滑用コンデンサの充電電流や負荷電流のピーク電流を押さえるためにソフトにパワー制御素子を敢えて活性領域を通過させることで調光器の振動電流を低減し、平滑コンデンサの充電が終了した直後の電流低下は前記抵抗器とコンデンサの直列回路に流れる充電電流で補うことにより、調光器のトライアックに流れる電流を保持電流以下にならないようにした照明器具用電源装置。  A commercial AC input is an alternating current phase-controlled by a dimmer, and one end of the output rectified in both waves by a diode bridge is connected to a series circuit of resistors and capacitors in parallel via a power control element. In the luminaire power supply device that drives the lighting LED or fluorescent lamp through the converter after being connected to the condenser for lighting, the triac of the dimmer is turned on, and at the same time, the conduction operation of the power control element starts and flows therethrough. In order to suppress the charging current of the smoothing capacitor and the peak current of the load current, the power control element is intentionally passed through the active region to reduce the vibration current of the dimmer, and the current immediately after the charging of the smoothing capacitor is finished. The decrease is compensated by the charging current flowing in the series circuit of the resistor and the capacitor, thereby maintaining the current flowing in the triac of the dimmer. Power supply for luminaire to avoid down. 請求項１のパワー制御素子の導通動作の方法で、パワー制御素子を流れる平滑用コンデンサの充電電流や負荷電流のピーク電流を押さえるために定電流に制御することでパワー制御素子を敢えて活性領域を通過させ、調光器の振動電流を低減し、平滑コンデンサの充電が終了した直後の電流低下は前記抵抗器とコンデンサの直列回路に流れる充電電流で補うことにより、調光器のトライアックに流れる電流を保持電流以下にならないようにした照明器具用電源装置。  The power control element according to claim 1, wherein the power control element is controlled to a constant current so as to suppress the charging current of the smoothing capacitor flowing through the power control element and the peak current of the load current. The current flowing in the trimmer of the dimmer is compensated for by the charging current flowing in the series circuit of the resistor and the capacitor. Is a power supply device for lighting fixtures that does not fall below the holding current. 請求項１、請求項２、の回路構成において、パワー制御素子を通過する前の交流入力間、あるいはダイオードブリッジで両波整流された出力の両端間に接続するコンデンサを少なくする目的で、ノイズフィルター回路をダイオードブリッジで両波整流した出力の一端はパワー制御素子を経由し平滑用コンデンサに接続された後に具備した照明器具用電源装置。  3. A noise filter according to claim 1, wherein the number of capacitors connected between the AC inputs before passing through the power control element or between both ends of the output rectified by a diode bridge is reduced. One end of an output obtained by rectifying a circuit with a diode bridge on both sides is connected to a smoothing capacitor via a power control element.
JP2011156110A 2011-06-28 2011-06-28 Power supply device for lighting apparatus Pending JP2013012452A (en)

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JP2007194071A (en) * 2006-01-19 2007-08-02 Sharp Corp Led driving circuit for illumination, led illumination module, and led lighting device

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CN104113957A (en) * 2013-04-22 2014-10-22 欧普照明股份有限公司 Self-excited oscillation driving circuit
CN105722273A (en) * 2013-04-22 2016-06-29 欧普照明股份有限公司 Self-excited oscillation driving circuit
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KR101683438B1 (en) 2014-02-19 2016-12-07 주식회사 실리콘웍스 Lighting system and control circuit thereof
JP2021001962A (en) * 2019-06-21 2021-01-07 シャープ株式会社 Heater drive device, compound machine and heater drive method
JP7316110B2 (en) 2019-06-21 2023-07-27 シャープ株式会社 Heater driving device, multi-function machine and heater driving method

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