JPS6288293A - Discharge lamp starter - Google Patents
Discharge lamp starterInfo
- Publication number
- JPS6288293A JPS6288293A JP22813085A JP22813085A JPS6288293A JP S6288293 A JPS6288293 A JP S6288293A JP 22813085 A JP22813085 A JP 22813085A JP 22813085 A JP22813085 A JP 22813085A JP S6288293 A JPS6288293 A JP S6288293A
- Authority
- JP
- Japan
- Prior art keywords
- main switch
- discharge lamp
- switch element
- preheating
- pulse
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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- Circuit Arrangements For Discharge Lamps (AREA)
Abstract
(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.
Description
【発明の詳細な説明】
[技術分野]
本発明は始動パルスを逐次変化させて放電灯に印加する
放電灯始動装置に関する。DETAILED DESCRIPTION OF THE INVENTION [Technical Field] The present invention relates to a discharge lamp starting device that sequentially changes a starting pulse and applies it to a discharge lamp.
[背景技術1
従来、蛍光灯等の放電灯の始動を点灯管に代えて電子回
路によって行う放電灯始動VC置が開発されてきた。[Background Art 1 Conventionally, a discharge lamp starting VC device has been developed in which a discharge lamp such as a fluorescent lamp is started by an electronic circuit instead of a lighting tube.
放電灯の始動に当たっては始動性能の様々な改良がなさ
れているが、いずれの場合も放電灯に印加するパルス電
圧は放電灯が点灯するのに充分な電圧を印加している。Various improvements have been made to the starting performance of discharge lamps, but in all cases the pulse voltage applied to the discharge lamp is sufficient to light the discharge lamp.
特に低温時に放電灯が点灯するためにはより高圧パルス
が必要であるため、印加するパルス電圧はこの低温時に
も放電灯が点灯できるように高電圧である。そのため常
温において必要なパルス電圧に対して低温度におけるパ
ルスはより高電圧であり、常温時、この高電圧パルスを
放電灯に印加することはランプ寿命に悪影響を及ぼすと
いう問題がある。In particular, in order to light the discharge lamp at a low temperature, a higher voltage pulse is required, so the pulse voltage to be applied is a high voltage so that the discharge lamp can be lit even at this low temperature. Therefore, a pulse at a low temperature has a higher voltage than the pulse voltage required at room temperature, and there is a problem in that applying this high voltage pulse to a discharge lamp at room temperature has a negative effect on the lamp life.
また放電灯、例えば20W、30W、40Wのようにワ
ット敗が異なれば放電灯を点灯させることができるパル
ス電圧ら夫々異なり、そのため各ワットの放電灯に同じ
ソケットを用いる場合、上記装置の取付間違いをするこ
とがある。このことにより例えば40W千!−フタイブ
照明器具mに定数設計された40W用始動装置を20W
チ3−クタイプ照明用照明器兵のスタートソケットに結
合した場合、40W用始動装置は高圧パルス電圧を発生
するように設計されており、20Wの放電灯に必要なパ
ルス電圧よりも高電圧のパルスを発生することになる。In addition, if the discharge lamp has a different wattage, such as 20W, 30W, or 40W, the pulse voltage that can be used to light the discharge lamp will be different. Therefore, if the same socket is used for each wattage discharge lamp, the above device may be installed incorrectly. Sometimes I do. For example, 40W, 1,000! - 20W starting device for 40W with constant design for Futaibu lighting fixture m
When coupled to the start socket of a check-type lighting lamp, the 40W starter is designed to produce a high pulsed voltage, which is higher than the pulsed voltage required for a 20W discharge lamp. will occur.
このパルスをいきなり印加した場合、20W放電灯には
過大なパルスが印加され、放電灯の黒化を早める。また
逆の場合にはパルス電圧が不足して放電灯が始動点灯し
ないこともある。If this pulse is suddenly applied, an excessive pulse is applied to the 20W discharge lamp, which accelerates the blackening of the discharge lamp. In the opposite case, the pulse voltage may be insufficient and the discharge lamp may not start and turn on.
以上の欠点を除くために従来、放電灯にパルス電圧を徐
々に上昇させて散発のパルスとして放電灯に印加する方
法がある。In order to eliminate the above-mentioned drawbacks, there is a conventional method in which the pulse voltage is gradually increased and applied to the discharge lamp as sporadic pulses.
第7図(a)は従来例の回路構成を示しており、放電灯
4と直列に接続されたインダクタンスを含む安定器要素
3と、上記放電灯4に並列接続された主スイッチ要素5
と、該主スイッチ要素5に並列接続した制御回路6とか
ら構成されている。ここで主スイッチ要素5は簡単に説
明するために、第7図(b)に示すようにダイオード5
1、トランジスタ52の直列回路により構成されている
ものとする。FIG. 7(a) shows a circuit configuration of a conventional example, in which a ballast element 3 including an inductance is connected in series with the discharge lamp 4, and a main switch element 5 is connected in parallel with the discharge lamp 4.
and a control circuit 6 connected in parallel to the main switch element 5. Here, the main switch element 5 is a diode 5 as shown in FIG. 7(b) for easy explanation.
1. It is assumed that the circuit is composed of a series circuit of transistors 52.
次に従来例の動作を説明する。今電源スイッチ2を投入
して交流電源1を接続し制御回路6が動作を始めたする
と、第8図(a)に示すように制御回路6の信号により
主スイッチ要素5のトランジスタ52は導通し、ダイオ
ード51の順方向に電流■が流れ、放電灯4の両フイラ
メン)4a、4bを第8図(b)に示すようシこ所謂半
波予熱する。一定時+11’lAl過(予熱時間後)し
更に第8図(、)に示すし1時間後、トランジスタ52
は予熱電流工を遮断し、安定器要素3の過渡現象により
放電灯4の両端に第8図(c)に示すようにパルス電圧
を発生する。更にtl、後(予熱電流通流開始時点)、
トランジスタ52は再度導通し、電流■を流す。L2後
更にトランジスタ52は再度遮断し、パルス電圧を放電
灯4に印加する。以下同様にトランジスタ52は導通、
遮断を繰り返す。このとき遮断される電流は小さな電流
から大きな電流へと徐々に増加するようにしてあり、安
定器要素3の過渡現象により低電圧から高電圧へと徐々
にパルス電圧が増加し、放電灯4に印加されついには放
電灯4は、α灯する。尚第8図(c)は放電灯4の両端
電圧V62を示し、同図中の破線は交流電源1の電圧波
形である。Next, the operation of the conventional example will be explained. Now, when the power switch 2 is turned on and the AC power source 1 is connected, and the control circuit 6 starts operating, the transistor 52 of the main switch element 5 becomes conductive due to the signal from the control circuit 6, as shown in FIG. 8(a). , a current (2) flows in the forward direction of the diode 51, and both filaments (4a, 4b) of the discharge lamp 4 are preheated by a so-called half-wave as shown in FIG. 8(b). At a constant time +11'lAl (after preheating time), as shown in FIG.
interrupts the preheating current, and a transient phenomenon of the ballast element 3 generates a pulse voltage across the discharge lamp 4 as shown in FIG. 8(c). After further tl (at the start of preheating current flow),
Transistor 52 becomes conductive again, allowing current ■ to flow. After L2, the transistor 52 is again cut off and a pulse voltage is applied to the discharge lamp 4. Similarly, the transistor 52 becomes conductive.
Repeat the cutoff. The current cut off at this time is designed to gradually increase from a small current to a large current, and due to the transient phenomenon of the ballast element 3, the pulse voltage gradually increases from low voltage to high voltage, and the discharge lamp 4 When the voltage is applied, the discharge lamp 4 finally turns on. Incidentally, FIG. 8(c) shows the voltage V62 across the discharge lamp 4, and the broken line in the figure is the voltage waveform of the AC power supply 1.
この方式において通常電流を連断する位相は第Q F
gl / L、 N5z−r、Ink 9R−釘4m
K3 m 台n / !偽〜 T Δ)4+
車 I:’rknで行なわれる。ところがこの方式に
おいて電源電圧の変化、周囲温度の変化、又安定器要素
3のインダクタンス値のばらつき、放電灯4のばらつき
等により予熱電流Iの終端(第8図(b)のP点)は不
安定なものとなり、このとき発生するパルス電圧も不安
定となるという欠点がある。In this method, the phase that connects and disconnects the normal current is the QF
gl/L, N5z-r, Ink 9R-Nail 4m
K3 m units/! False ~ T Δ) 4+
Car I: held in 'rkn. However, in this method, the termination of the preheating current I (point P in Fig. 8(b)) may be incorrect due to changes in the power supply voltage, changes in the ambient temperature, variations in the inductance value of the ballast element 3, variations in the discharge lamp 4, etc. However, there is a drawback that the pulse voltage generated at this time also becomes unstable.
これに対して$9図にトランジスタ52に流れる電流の
立ち上がりで遮断する改良例を示す。On the other hand, FIG. 9 shows an improved example in which the current flowing through the transistor 52 is cut off at the rising edge.
つまりトランジスタ52を流れる電流の立ち上がりは電
源電圧と同位相であるため、電流は比較的安定であり、
そのため発生するパルス電圧は安定する。ところがパル
ス発生の過程においては電流の立ち上がりでトランジス
タ52が電流を遮断するため、放電灯4のフィラメント
4a、4bを流れる電流はわずかなものであり、フィラ
メント4a、 4 bの予熱パワーが不足するという欠
点がある。In other words, the rise of the current flowing through the transistor 52 is in the same phase as the power supply voltage, so the current is relatively stable.
Therefore, the generated pulse voltage becomes stable. However, in the process of pulse generation, the transistor 52 cuts off the current at the rise of the current, so the current flowing through the filaments 4a and 4b of the discharge lamp 4 is small, and the preheating power for the filaments 4a and 4b is insufficient. There are drawbacks.
第9図(a)−(c)は第8図(a)−(c)に対応す
る。し発明の目的]
本発明は上述の問題点に鑑みてなされたもので、その目
的とするとこるは放電灯の始官1において周同温度の変
化に関係なく共用化を行い又放電灯のソフトスタートが
でき、パルス電圧を安定に発生させることができる放電
灯始動装置を提供するにある。FIGS. 9(a)-(c) correspond to FIGS. 8(a)-(c). OBJECT OF THE INVENTION] The present invention has been made in view of the above-mentioned problems.The purpose of the present invention is to make the starting point 1 of a discharge lamp common regardless of changes in ambient temperature, and to improve the software of the discharge lamp. To provide a discharge lamp starting device capable of starting and stably generating a pulse voltage.
[発明の開示1
本発明は予熱型の放電灯と交流電源との開に直列に挿入
したインダクタンスを含む安定器要素と、上記放電灯の
非電源側端子間に並列に接続された主スイッチ要素と、
該主スイッチ要素に並列に接続され主スイッチ要素を制
御する制御回路とからなり、該制御回路により電源投入
から一定時間主スイッチ要素を導通させる予熱先行期間
を設定するとともに該予熱先行期間経過後予熱電流の立
ち上がり時点で主スイッチ要素を遮断させて放電灯両端
にパルスを発生させる期間と主スイッチ要素を導通させ
て放電灯に予熱電流を流す期間とを交互に設定し、且つ
主スイッチ要素の遮断させる位相を徐々に大きくなるよ
うに設定したことを特徴とするものである。以下実施例
により説明する。[Disclosure 1 of the Invention The present invention provides a ballast element including an inductance inserted in series between a preheating discharge lamp and an AC power supply, and a main switch element connected in parallel between the non-power supply side terminals of the discharge lamp. and,
It consists of a control circuit that is connected in parallel to the main switch element and controls the main switch element, and the control circuit sets a preheating period in which the main switch element is conductive for a certain period of time after the power is turned on, and also performs preheating after the preheating period has elapsed. A period in which the main switch element is cut off at the point of current rise to generate a pulse across the discharge lamp, and a period in which the main switch element is made conductive to flow a preheating current to the discharge lamp are set alternately, and the main switch element is cut off. This feature is characterized in that the phase to be applied is set to gradually increase. This will be explained below using examples.
及1九り
第1図(、>(b)は本発明による放電灯始動装置を用
いた点灯回路の基本回路構成を示しており、図において
放電灯4と直列に接続されたインダクタンスを含む安定
器要素3と、上記放電灯4との直列回路に接続された主
スイッチ要素5と、主スイッチ要素5に並列接続された
制御回路6とで構成されて第7図従従来と基本回路構成
は同じであるが、制御回路6に特徴がある。制御回路6
は第2図に示すように電源同期信号検出回路7、予熱タ
イマ回路8、パルス発生信号回路9、パルス発生位相設
定回路10、パルス間予熱タイマ回路11、パルス発生
時間タイマ回路12、主スイッチ動作信号回路13、基
本発振回路14などにより構成される。Figure 1(b) shows the basic circuit configuration of a lighting circuit using the discharge lamp starting device according to the present invention. The main switch element 5 is connected to a series circuit with the discharge lamp 4, and the control circuit 6 is connected in parallel to the main switch element 5. Although they are the same, the control circuit 6 has a feature.Control circuit 6
As shown in FIG. 2, the power synchronization signal detection circuit 7, preheating timer circuit 8, pulse generation signal circuit 9, pulse generation phase setting circuit 10, inter-pulse preheating timer circuit 11, pulse generation time timer circuit 12, main switch operation It is composed of a signal circuit 13, a basic oscillation circuit 14, and the like.
第3図は制御回路6の具体回路を示しでおり、この具体
回路及び第4図の波形回路により本実施例の動作を説明
する。令弟1図(、)において電源スィッチ2の投入に
より放電灯4の両端に第4図(a)に示す電源電圧が印
加されると、この電圧によって電源同期信号検出回路7
により第4図(b)のようなトリがパルスが出力される
。このパルスは予熱タイマ回路8により印加され、予熱
時間(第4図(c)の時刻t1)虫で”H″出力保持す
る。この″H″H″によりパルス間予熱タイマ回路11
の出力を第4図(f)に示すように”H″に、またパル
ス発生時間タイマ回路12の出力を第4図(d)に示す
ように”H”に、又パルス発生信号回路9の出力を第4
図(e)に示すようにL″に保持させ、更に主スイッチ
動作信号回路13の出力を第4図(g)に示すようにH
”として主スイッチ要素5を動作させ、第4図(h)に
示すように放電灯4のフイラメン)4a、4bの予熱を
行う(第4図(c)の時刻L1まで)。FIG. 3 shows a concrete circuit of the control circuit 6, and the operation of this embodiment will be explained using this concrete circuit and the waveform circuit of FIG. When the power supply voltage shown in FIG. 4(a) is applied to both ends of the discharge lamp 4 by turning on the power switch 2 in FIG.
As a result, pulses as shown in FIG. 4(b) are output. This pulse is applied by the preheating timer circuit 8, and the "H" output is maintained during the preheating time (time t1 in FIG. 4(c)). By this "H"H", the inter-pulse preheating timer circuit 11
The output of the pulse generation time timer circuit 12 becomes "H" as shown in FIG. 4(d), and the output of the pulse generation time timer circuit 12 becomes "H" as shown in FIG. 4(d). 4th output
The output of the main switch operation signal circuit 13 is held at L'' as shown in FIG.
”, the main switch element 5 is operated, and the filament 4a, 4b of the discharge lamp 4 is preheated as shown in FIG. 4(h) (until time L1 in FIG. 4(c)).
t1時間後予熱タイマ回路8の出力信号は”L′となり
、上記パルス間予熱タイマ回路11、パルス発生時間タ
イマ12、パルス発生信号回路9は夫々動作を開始する
。パルス間予熱タイマ回路11は第4図(f)に示すよ
うに電源同期信号検出回路7の出力信号の分周動作を行
う。まずパルス発生時間タイマ回路12はパルス発生を
行う所要時間(第4図(d)の時刻17)まで”H″信
号出力する。After time t1, the output signal of the preheating timer circuit 8 becomes "L", and the inter-pulse preheating timer circuit 11, pulse generation time timer 12, and pulse generation signal circuit 9 each start operating. As shown in FIG. 4(f), the output signal of the power synchronization signal detection circuit 7 is divided into frequencies.First, the pulse generation time timer circuit 12 calculates the time required for pulse generation (time 17 in FIG. 4(d)). Outputs a “H” signal until
予熱タイマ回路8がt1時にL″になり、このときパル
ス間予熱タイマ回路12、コンデンサ111によりトリ
がパルスが入力されることにより、パルス発生位相設定
回路10の各カウンタ101 r103.105が基本
発振回路14のクロック(例えば10KHzなど)でカ
ウントし始め、第4図(e)に示す(t2−tt)、(
t5−t4)、(ta−tt)の波形を出力する。この
ときパルス発生信号回路9のシフトレジスタ91,92
.93により、まず第4図(e)に示す(ti−tt
)の波形を出力する。The preheating timer circuit 8 becomes L'' at time t1, and at this time, the inter-pulse preheating timer circuit 12 and the capacitor 111 input pulses, so that each counter 101 r103, 105 of the pulse generation phase setting circuit 10 starts the basic oscillation. Counting starts with the clock (for example, 10 KHz) of the circuit 14, and (t2-tt), (
t5-t4) and (ta-tt) waveforms are output. At this time, shift registers 91 and 92 of the pulse generation signal circuit 9
.. 93, the (ti-tt
) waveform is output.
主スイッチ動作信号回路13により各信号は合成され、
第4図(g)に示すように電流立ち上がり時点D+時)
から(tz−tt)時間後に”L”イバ号を出力する。Each signal is synthesized by the main switch operation signal circuit 13,
As shown in Fig. 4 (g), at the current rise time D+)
The "L" signal is output after (tz-tt) time.
これにより第4図(11)に示すように主スイッチ要素
5が遮断されて予熱電流■を遮断し、安定器要素3の過
渡現象により第4図(i)に示すようにパルス電圧を発
生する。As a result, the main switch element 5 is cut off as shown in Fig. 4 (11), cutting off the preheating current ■, and a pulse voltage is generated as shown in Fig. 4 (i) due to the transient phenomenon of the ballast element 3. .
この後、主スイッチ要素5はパルス間予熱タイマ回路1
1の出力がH″になるまで、連断状態を保持する(第4
図(f)の13時)。さてt11時点なると、パルス間
予熱タイマ回路11は電源同期信号検出回路7のトリが
パルスによりH″となり、主スイッチ動作信号回路13
はH“どなって、主スイッチ要素10は導通され、放電
灯4のフィラメント4a、4bを予熱する。この後、上
記トリがパルスがし1時に印加されると、パルス発生信
号回路9はシフトレノスタ91,92.93により第2
番目の波形を出力する。主スイッチ動作信号回路13に
より各信号は合成され、第4図(+r)に示すように電
流立ち上がり時点(ti時)から、(t5−t4>時間
後に”L”を出力し、上記同様にパルス電圧を発生する
。以下同様に動作を繰り返し、し8時にパルスを発生す
る。After this, the main switch element 5 switches between the pulse preheating timer circuit 1
The continuous state is maintained until the output of No. 1 becomes H'' (No. 4
(13:00 in figure (f)). Now, at time t11, the inter-pulse preheating timer circuit 11 becomes H'' due to the pulse of the power synchronization signal detection circuit 7, and the main switch operation signal circuit 13
The main switch element 10 is turned on and preheats the filaments 4a and 4b of the discharge lamp 4.After that, when the above-mentioned pulse is applied at 1 o'clock, the pulse generation signal circuit 9 turns on the shift lamp. 2nd due to 91,92.93
Output the second waveform. Each signal is synthesized by the main switch operation signal circuit 13, and as shown in FIG. A voltage is generated.The operation is repeated in the same manner, and a pulse is generated at 8 o'clock.
このときパルス発生信号回路9の出力信号は第4図(h
)に示す予熱電流Iの波形に示すように遮断電流をカウ
ンタ101,103,105により徐々に長くとっであ
る。さてt8時にパルスを発生することにより、放電灯
4は点灯し、主スイッチ動作信号回路13の出力信号は
L″を保持し、放電灯4は点灯を維持する。At this time, the output signal of the pulse generation signal circuit 9 is as shown in FIG.
As shown in the waveform of the preheating current I shown in ), the interrupting current is gradually increased by counters 101, 103, and 105. Now, by generating a pulse at time t8, the discharge lamp 4 is lit, the output signal of the main switch operation signal circuit 13 is maintained at L'', and the discharge lamp 4 is maintained lit.
以上のように本実施例においては、先行予熱の後、予熱
電流Iの立ち上がり(f54図のむ2時、つ)で、主ス
イッチ要素5を遮断させて電流■を遮断し、パルスを発
生させ、次の周期(第4図のt1時点)で、主スイッチ
要素5をオンし、放電灯4のフイラメン)4a、4bを
予熱する。以後この動作を繰り返し、1周期毎にパルス
発生、予熱を交互に行い、パルス電圧を低圧パルスから
高圧パルスまで順次上昇させる。ここで第3図のタイマ
82,122及びカウンタ101,103,105は単
安定マルチバイブレータ、μpc4020(日本電気社
製)等のタイマICのようにクロック、クリア機能を有
するタイマ回路であればよい。又ラッチ回路81゜12
1.102,104,106及び分周回路110、シフ
トレノスタ91,92,93は夫々μpc4013(日
本電気社製)等の7リツプ70ツブを用いて示したが、
上記動作をするものであればいがなるものでもよい。As described above, in this embodiment, after preliminary preheating, at the rise of the preheating current I (at 2 o'clock in the diagram f54), the main switch element 5 is cut off to cut off the current ■, and a pulse is generated. , In the next cycle (time t1 in FIG. 4), the main switch element 5 is turned on to preheat the filaments 4a and 4b of the discharge lamp 4. Thereafter, this operation is repeated, pulse generation and preheating are performed alternately every cycle, and the pulse voltage is increased sequentially from the low voltage pulse to the high voltage pulse. Here, the timers 82, 122 and counters 101, 103, 105 in FIG. 3 may be any timer circuits having clock and clear functions, such as a timer IC such as a monostable multivibrator or μPC4020 (manufactured by NEC Corporation). Also latch circuit 81°12
1.102, 104, 106, frequency dividing circuit 110, and shift renostars 91, 92, 93 are each shown using 7-lip 70-tub units such as μpc4013 (manufactured by NEC Corporation).
Any type of material may be used as long as it performs the above operations.
え1蝕2
第5図に他の実施例及びfJrJ6図にその動作波形を
示す6基本的動作は第3図に示した実施例1の回路と同
様であるから省略する。E1 Eclipse 2 Another embodiment is shown in FIG. 5, and its operating waveforms are shown in FIG. 6. Since the basic operation is the same as that of the circuit of the first embodiment shown in FIG.
本実施例においてはパルス間予熱タイマ回路11を第3
図の分周回路ではなく、タイマ回路112、ラッチ回路
113を用いて第6図(f)に示すように主スイッチ動
作信号回路13の出力が”L”となったt2時点から動
作し、13時に”H″信号出力するようにした点に?8
徴を有する。In this embodiment, the inter-pulse preheating timer circuit 11 is
Using the timer circuit 112 and latch circuit 113 instead of the frequency dividing circuit shown in the figure, the main switch operation signal circuit 13 operates from time t2 when the output of the main switch operation signal circuit 13 becomes "L" as shown in FIG. 6(f). What about the point that the "H" signal is output at certain times? 8
have symptoms.
而してこの動作によると一旦遮断された主スイッチ要素
5は同−周期内のり1時点で再度導通して放電灯4のフ
イラメン)4a、4bに予熱電流Iを第6図(h)に示
すように流し、以下同様に同−周期内に主スイッチ要素
5は遮断、導通を繰り返すのである。According to this operation, the main switch element 5, which was once cut off, becomes conductive again at time 1 within the same period, and a preheating current I is applied to the filaments 4a and 4b of the discharge lamp 4, as shown in FIG. 6(h). Then, the main switch element 5 repeats the interruption and conduction within the same period.
そして先行予熱の後、予熱電流■の立ち上がり(第6図
のt2時点)で、主スイッチ要素5をオフして電流工を
遮断してパルスを発生させ、同−周期内(第6図のし3
時、α)で主スイッチ要素5をオンしフイラメン)4a
、4bを予熱する。以後この動作を繰り返し1周期内で
パルス発生、予熱を順次繰り返し、パルス電圧を低圧パ
ルスから高圧パルスまで順次上昇させることになる。尚
本実施例では毎サイクルにおいてパルス発生及び予熱を
行うので実施例1の場合に比べ早期始動が可能である。After the preliminary preheating, at the rise of the preheating current (time t2 in Fig. 6), the main switch element 5 is turned off to cut off the electric current and generate a pulse. 3
At the time, α) turns on the main switch element 5 and filament) 4a
, 4b. Thereafter, this operation is repeated to sequentially repeat pulse generation and preheating within one cycle, and the pulse voltage is increased sequentially from the low voltage pulse to the high voltage pulse. In this embodiment, since pulse generation and preheating are performed in every cycle, earlier start-up is possible than in the first embodiment.
尚第6図(a)〜(i)は第4図(a)〜(i)に対応
する。Note that FIGS. 6(a) to (i) correspond to FIGS. 4(a) to (i).
[発明の効果]
本発明は予熱型の放電灯と交流電源との間に直列に挿入
したインダクタンスを含む安定器要素と、上記放電灯の
非電源側端子間に並列に接続された主スイッチ要素と、
該主スイッチ要素に並列に接続され主スイッチ要素を制
御する制御回路とからなり、電源投入から一定時間主ス
イッチ要素を導通させる予熱先行期間を設定するととも
に該予熱先行期間経過後予熱電流の立ち上がり時点で主
スイッチ要素を遮断させて放電灯両端にパルスを発生さ
せるので、遮WI電流が安定させることができ、そのた
め発生するパルス電圧が安定となり、設計通りのパルス
電圧を放電灯に印加させることができ、放電灯の長寿命
化が図れるとともにM順性の向上が図れ、しかもパルス
発生期間と主スイッチ要素を導通させて放電灯に予熱電
流を流す期間とを交互にしたので、予熱により放電灯の
始動時点を早めることができるという効果を奏し、更に
主スイッチ要素の遮断位相を徐々に大きくするので、遮
断電流値を上昇させることができてパルス電圧を低圧か
ら高圧に順次上昇させることができるから最適始動パル
ス電圧のことなる低ワツトから高ワツトまでの放電灯に
対して共用化でき、又周囲温度の変化、安定器要素、放
電灯のばらつきに対して最適なパルスを徐々に放電灯に
印加でき放電灯の長寿命化が一層図れるという効果を奏
する。[Effects of the Invention] The present invention provides a ballast element including an inductance inserted in series between a preheating discharge lamp and an AC power supply, and a main switch element connected in parallel between the non-power supply side terminals of the discharge lamp. and,
It consists of a control circuit that is connected in parallel to the main switch element and controls the main switch element, and sets a preheating advance period in which the main switch element is conductive for a certain period of time after the power is turned on, and a point at which the preheating current rises after the preheating advance period has elapsed. Since the main switch element is shut off and pulses are generated at both ends of the discharge lamp, the interrupted WI current can be stabilized, and the generated pulse voltage is therefore stabilized, making it possible to apply the designed pulse voltage to the discharge lamp. This makes it possible to extend the life of the discharge lamp and improve the M conformity. Furthermore, since the pulse generation period and the period in which the main switch element is made conductive and the preheating current flows through the discharge lamp are alternated, the discharge lamp can be heated by preheating. The effect is that the starting point can be brought forward, and since the cut-off phase of the main switch element is gradually increased, the cut-off current value can be increased, and the pulse voltage can be increased sequentially from low voltage to high voltage. It can be used for discharge lamps ranging from low wattage to high wattage, with different optimum starting pulse voltages, and the optimum pulse can be gradually applied to discharge lamps in response to changes in ambient temperature, ballast elements, and variations in discharge lamps. This has the effect of further extending the life of the discharge lamp.
第1図(a)及び(b)は本発明の基本となる回路構成
図及び主スイッチ要素の構成図であり、第2図は本発明
の実施例】の制御回路の回路filt戒図、第3図は同
上の制御回路の具体回路図、第4図は同上の動作説明用
の波形図、第5図は本発明の実施例2の制御回路の具体
回路図、第6図は同上の動作説明用の波形図、第7図(
a)及び(b)は従来例の基本となる回路構成図及び主
スイッチ要素の構成図、第8図は同上の動作説明用の波
形図、第9図は別の従来例の動作説明用の波形図であり
、1は交流電源、3は安定′a要素、4は放電灯、5は
主スイッチ要素、6は制御回路、■は予熱電流である。
代理人 弁理士 石 1)長 七
第4図FIGS. 1(a) and (b) are the basic circuit configuration diagram of the present invention and the configuration diagram of the main switch element, and FIG. 2 is a circuit diagram of the control circuit according to the embodiment of the present invention. 3 is a specific circuit diagram of the control circuit same as the above, FIG. 4 is a waveform diagram for explaining the operation of the same, FIG. 5 is a specific circuit diagram of the control circuit of the second embodiment of the present invention, and FIG. 6 is the operation of the same as the above. Explanatory waveform diagram, Figure 7 (
a) and (b) are basic circuit configuration diagrams and main switch element configuration diagrams of the conventional example, FIG. 8 is a waveform diagram for explaining the operation of the same as above, and FIG. 9 is a waveform diagram for explaining the operation of another conventional example. In the waveform diagram, 1 is an AC power supply, 3 is a stable element, 4 is a discharge lamp, 5 is a main switch element, 6 is a control circuit, and 2 is a preheating current. Agent Patent Attorney Ishi 1) Chief Figure 7 4
Claims (3)
たインダクタンスを含む安定器要素と、上記放電灯の非
電源側端子間に並列に接続された主スイッチ要素と、該
主スイッチ要素に並列に接続され主スイッチ要素を制御
する制御回路とからなり、該制御回路により電源投入か
ら一定時間主スイッチ要素を導通させる予熱先行期間を
設定するとともに該予熱先行期間経過後予熱電流の立ち
上がり時点で主スイッチ要素を遮断させて放電灯両端に
パルスを発生させる期間と主スイッチ要素を導通させて
放電灯に予熱電流を流す期間とを交互に設定し、且つ主
スイッチ要素の遮断させる位相を徐々に大きくなるよう
に設定したことを特徴とする放電灯始動装置。(1) A ballast element including an inductance inserted in series between a preheating discharge lamp and an AC power supply, a main switch element connected in parallel between the non-power supply side terminals of the discharge lamp, and the main switch. It consists of a control circuit that is connected in parallel to the element and controls the main switch element, and the control circuit sets a preheating period in which the main switch element is conductive for a certain period of time after the power is turned on, and also controls the rise of the preheating current after the preheating period has elapsed. At this point, a period in which the main switch element is cut off to generate a pulse at both ends of the discharge lamp and a period in which the main switch element is made conductive to cause a preheating current to flow through the discharge lamp are set alternately, and a phase in which the main switch element is cut off is set alternately. A discharge lamp starting device characterized in that the device is set to gradually increase in size.
せてから次の交流電源の周期まで遮断状態を保持し、次
の周期で主スイッチ要素を導通させて予熱電流を流す期
間を設定することを特徴とする特許請求の範囲第1項記
載の放電灯始動装置。(2) After the main switch element is turned off at the rise of the preheating current, the cutoff state is maintained until the next cycle of the AC power supply, and a period is set in which the main switch element is made conductive and the preheating current flows in the next cycle. A discharge lamp starting device according to claim 1, characterized in that:
せてから同周期内で主スイッチ要素を導通させて予熱電
流を流す期間を設定することを特徴とする特許請求の範
囲第1項記載の放電灯始動装置。(3) A period is set in which the main switch element is cut off at the rise of the preheating current, and then the main switch element is made conductive within the same cycle to flow the preheating current. Electric light starter.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP22813085A JPS6288293A (en) | 1985-10-14 | 1985-10-14 | Discharge lamp starter |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP22813085A JPS6288293A (en) | 1985-10-14 | 1985-10-14 | Discharge lamp starter |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS6288293A true JPS6288293A (en) | 1987-04-22 |
Family
ID=16871684
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP22813085A Pending JPS6288293A (en) | 1985-10-14 | 1985-10-14 | Discharge lamp starter |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS6288293A (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2002028150A1 (en) * | 2000-09-26 | 2002-04-04 | Iwasaki Electric Co., Ltd. | Circuit for lighting hid lamp |
US6791286B2 (en) | 2000-09-26 | 2004-09-14 | Iwasaki Electric Co., Ltd. | Hid lamp operating circuit |
-
1985
- 1985-10-14 JP JP22813085A patent/JPS6288293A/en active Pending
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2002028150A1 (en) * | 2000-09-26 | 2002-04-04 | Iwasaki Electric Co., Ltd. | Circuit for lighting hid lamp |
JP2002110379A (en) * | 2000-09-26 | 2002-04-12 | Iwasaki Electric Co Ltd | Lighting circuit of hid lamp |
US6791286B2 (en) | 2000-09-26 | 2004-09-14 | Iwasaki Electric Co., Ltd. | Hid lamp operating circuit |
US6836078B2 (en) | 2000-09-26 | 2004-12-28 | Iwasaki Electric Co., Ltd. | Circuit for lighting HID lamp |
JP4724908B2 (en) * | 2000-09-26 | 2011-07-13 | 岩崎電気株式会社 | HID lamp lighting circuit |
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