JP3064219B2 - Lighting equipment - Google Patents
Lighting equipmentInfo
- Publication number
- JP3064219B2 JP3064219B2 JP7180898A JP18089895A JP3064219B2 JP 3064219 B2 JP3064219 B2 JP 3064219B2 JP 7180898 A JP7180898 A JP 7180898A JP 18089895 A JP18089895 A JP 18089895A JP 3064219 B2 JP3064219 B2 JP 3064219B2
- Authority
- JP
- Japan
- Prior art keywords
- self
- control element
- extinguishing
- thyristor
- time
- 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.)
- Expired - Fee Related
Links
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B20/00—Energy efficient lighting technologies, e.g. halogen lamps or gas discharge lamps
- Y02B20/40—Control techniques providing energy savings, e.g. smart controller or presence detection
Landscapes
- Circuit Arrangement For Electric Light Sources In General (AREA)
Description
【０００１】[0001]
【産業上の利用分野】本発明は、白熱ランプ等を用いて
居間、劇場内、スタジオや舞台等の照明装置に利用され
る照明装置に関するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a lighting device used in a living room, a theater, a studio, a stage, or the like using an incandescent lamp.
【０００２】[0002]
【従来の技術】従来、照明装置は逆並列に接続した２個
のサイリスタと負荷の白熱ランプとを直列に接続し、サ
イリスタのゲートに制御信号を与えて、交流入力電源の
各半サイクルごとにそれぞれサイリスタをスイッチ制御
して、負荷電流を位相制御していた。2. Description of the Related Art Conventionally, a lighting device has two thyristors connected in anti-parallel and an incandescent lamp of a load connected in series, and a control signal is given to a gate of the thyristor so that each half cycle of an AC input power supply is provided. Each of the thyristors is switch-controlled to control the phase of the load current.
【０００３】ところが、サイリスタのスイッチング時
に、単位時間当り、大きな電流変化が生じるので、それ
を制御するためにサイリスタと負荷との間にリアクトル
を設ける必要があった。また、サイリスタはゲート制御
信号を印加した後、サイリスタが自然転流するまでオン
を続けるので電力の利用率が悪いものであった。However, when the thyristor is switched, a large current change occurs per unit time, so that it is necessary to provide a reactor between the thyristor and the load in order to control the change. Further, since the thyristor continues to be turned on after the gate control signal is applied until the thyristor commences spontaneously, the power utilization rate is poor.
【０００４】そこで、近年図４に示すような自己消弧性
のあるバイポーラトランジスタ又はＭＯＳＦＥＴ，ＩＧ
ＢＴ等の自己消弧型制御素子４２，４５と、この制御素
子と逆並列にダイオード４３，４６とを設けた並列回路
４１，４４を２組逆方向に直列に接続した照明装置が提
案されている。そして、交流電源１の零電圧時に制御素
子の駆動装置４７からの駆動信号により、制御素子４
２，４５をオンさせる。例えば交流電源１、自己消弧型
制御素子４２、ダイオード４６を介して照明負荷の白熱
ランプ２に交流電流を供給させる。そして、この半サイ
クル時の所定位相で駆動信号をオンからオフへ変化させ
ると、図４（ａ）の実線に示すように単位時間当りの電
流変化を低減させて、零にすることができる。これによ
り、リアクトルを除いている。また、駆動信号をオフし
たのち、この半サイクル中に駆動信号を出力させ、制御
素子をオンさせると、図４（ｂ）の実線で示すような交
流電流が照明負荷に供給される。これにより電力の利用
率を向上させることができる。In recent years, a bipolar transistor or MOSFET, IG having self-extinguishing properties as shown in FIG.
A lighting device has been proposed in which two sets of parallel circuits 41 and 44 having self-extinguishing control elements 42 and 45 such as BT and diodes 43 and 46 in antiparallel with the control elements are connected in series in the reverse direction. I have. Then, when the AC power supply 1 is at zero voltage, the control element 4
Turn on 2,45. For example, an AC current is supplied to the incandescent lamp 2 of the lighting load via the AC power supply 1, the self-extinguishing control element 42, and the diode 46. When the drive signal is changed from ON to OFF at a predetermined phase during the half cycle, the current change per unit time can be reduced to zero as shown by the solid line in FIG. This excludes the reactor. When the drive signal is output during this half cycle after the drive signal is turned off and the control element is turned on, an alternating current shown by a solid line in FIG. 4B is supplied to the lighting load. As a result, the power utilization rate can be improved.
【０００５】しかしながら、冷状態の白熱ランプを起動
させると、定常時の約１０倍の過大電流が流れる場合が
ある。また、負荷側の短絡時にはさらに大きな電流が流
れる。これらの自己消弧型制御素子は安全動作領域（Ｓ
ＯＡ）の制約を受け、自己消弧型制御素子のチップの容
量に対し、短時間に流しうる電流は２倍程度であり大電
流をとることができなかった。この解決策にチップサイ
ズを大きくする方法と過大電流を抑制する方法が考えら
れるが、前者ではコスト高になる。また、後者ではラン
プに与える電力が少なくなり、フィラメントが熱くなる
まで時間がかかり点灯スピードが遅くなるという問題が
あった。However, when a cold incandescent lamp is started, an excessive current about 10 times that in a steady state may flow. Further, when the load is short-circuited, a larger current flows. These self-extinguishing control elements have a safe operation area (S
Due to the restrictions of OA), the current that can flow in a short time is about twice the capacity of the chip of the self-extinguishing control element, and a large current cannot be obtained. As a solution to this, there are a method of increasing the chip size and a method of suppressing the excessive current, but the former increases the cost. Further, in the latter, there is a problem that the electric power applied to the lamp is reduced, and it takes time until the filament becomes hot, and the lighting speed is reduced.
【０００６】そこで、本出願人は照明負荷へ位相制御に
より給電する自己消弧型制御素子と、自己消弧型制御素
子と逆方向に並列に設けられたダイオードと、自己消弧
型制御素子と並列に設けらたれたサイリスタと、上記サ
イリスタを駆動するサイリスタ駆動装置と、上記サイリ
スタの駆動時に所定サイクル間全導通を上記サイリスタ
駆動装置に指令する制御装置とを設けた照明装置を提案
している。そして、自己消弧型制御素子は、交流電源電
圧の零電位から通電し、照明負荷に逆位相制御電圧を印
加する。また、起動時にはこの自己消弧型制御素子に交
流電源電圧の零電圧から通電し、自己消弧型制御素子に
流れる電流を検出し、この検出電流が基準値に達してい
ると、次のサイクルにてサイリスタを全導通させ、検出
電流が基準値に達していないと、通常の制御を行う。Accordingly, the present applicant has disclosed a self-extinguishing type control element for supplying power to a lighting load by phase control, a diode provided in parallel with the self-extinguishing type control element in a reverse direction, and a self-extinguishing type control element. There is proposed a lighting device provided with a thyristor provided in parallel, a thyristor driving device for driving the thyristor, and a control device for instructing the thyristor driving device to perform full conduction for a predetermined cycle when the thyristor is driven. . Then, the self-extinguishing type control element conducts electricity from the zero potential of the AC power supply voltage and applies an anti-phase control voltage to the lighting load. At the time of startup, the self-extinguishing type control element is energized from the zero voltage of the AC power supply voltage, the current flowing through the self-extinguishing type control element is detected, and if the detected current has reached the reference value, the next cycle. When the detected current does not reach the reference value, normal control is performed.
【０００７】[0007]
【発明が解決しようとする課題】ところが、サイリスタ
を全導通させた後、自己消弧型制御素子で通常の位相制
御を行った時、検出電流が再び基準値に達することがあ
り、この場合、出力をオフさせているためにランプの点
灯スピードが遅くなり、次のサイクルにサイリスタを全
導通させると、負荷のランプが加熱されて所定の明るさ
以上の明るさが一瞬出る等の問題点があった。However, when the normal phase control is performed by the self-extinguishing control element after the thyristor is fully turned on, the detection current may reach the reference value again. Since the output is turned off, the lighting speed of the lamp slows down, and if the thyristor is fully turned on in the next cycle, the lamp of the load will heat up and the brightness above the predetermined brightness will momentarily come out. there were.
【０００８】[0008]
【課題を解決するための手段】上記の課題を解決するた
めに、この発明の照明装置は、照明負荷へ位相制御によ
り給電する自己消弧型制御素子と、上記自己消弧型制御
素子と逆方向に並列に設けられたダイオードと、上記自
己消弧型制御素子と並列に設けられたサイリスタと、上
記自己消弧型制御素子を駆動する自己消弧型制御素子用
駆動装置と、サイリスタを駆動するサイリスタ駆動装置
とにより構成された照明装置において、起動時に上記自
己消弧型制御素子に流れる電流を検出する電流検出器
と、上記電流検出器の検出信号と第１及び第２の基準値
とを比較し、上記検出信号が上記第１及び第２の基準値
に達すると、比較信号を出力する比較器と、サイクルの
交流電源電圧の零電位から上記自己消弧型制御素子の通
電を指令するとともに、上記零電位から上記第１の基準
値に達する時刻までの時間が所定時間より長いときに上
記サイクル間サイリスタをオンさせ、さらに上記第２の
基準値に達すると上記自己消弧型制御素子をオフさせる
制御装置とを設けた。In order to solve the above-mentioned problems, a lighting device according to the present invention comprises a self-extinguishing control element for supplying power to a lighting load by phase control, and a self-extinguishing control element reverse to the self-extinguishing control element. A diode provided in parallel in the direction, a thyristor provided in parallel with the self-extinguishing control element, a self-extinguishing control element driving device for driving the self-extinguishing control element, and a thyristor A current detector for detecting a current flowing through the self-extinguishing control element at the time of startup, a detection signal of the current detector, and first and second reference values. When the detection signal reaches the first and second reference values, a comparator that outputs a comparison signal and a command to energize the self-extinguishing type control element from zero potential of the AC power supply voltage in the cycle Then When the time from the zero potential to the time when the first reference value is reached is longer than a predetermined time, the thyristor is turned on during the cycle, and when the second reference value is reached, the self-extinguishing control element is activated. A control device for turning off is provided.
【０００９】[0009]
【作用】起動時、制御装置の信号により自己消弧型制御
素子が当該交流電源の半波の零電位から通流される。こ
の時、照明負荷に流れる電流が大きく、照明負荷に流れ
る電流が電流検出器により検出され、検出信号が第１及
び第２の基準電源の第１及び第２の基準値と比較され、
検出信号が第１又は第２の基準値より大きい時、第１及
び第１の比較信号が比較器から出力され、制御装置に入
力される。検出信号が第１の基準値を越えると、比較信
号が交流電源の零電位から第１の基準値に達する時刻ま
での時間が所定時間内に制御装置に入力されると、制御
装置からサイリスタにオンを指令し、サイリスタはオン
される。さらに、電流が立上がり、検出信号が第２の基
準値に達すると、第２の比較信号が比較器から出力さ
れ、制御装置は自己消弧型制御素子にオフを指令し、自
己消弧型制御素子はオフとなる。At the time of starting, the self-extinguishing type control element flows from a half-wave zero potential of the AC power supply by a signal of the control device. At this time, the current flowing through the lighting load is large, the current flowing through the lighting load is detected by the current detector, and the detection signal is compared with the first and second reference values of the first and second reference power sources.
When the detection signal is larger than the first or second reference value, the first and first comparison signals are output from the comparator and input to the control device. When the detection signal exceeds the first reference value, when the time until the comparison signal reaches the first reference value from the zero potential of the AC power supply is input to the control device within a predetermined time, the control device sends the signal to the thyristor. The thyristor is turned on, and the thyristor is turned on. Further, when the current rises and the detection signal reaches the second reference value, a second comparison signal is output from the comparator, and the control device instructs the self-extinguishing type control element to turn off, and the self-extinguishing type control The device is turned off.
【００１０】もし、上述の第１の比較信号が交流電源の
零電位から第１の基準値に達する時刻までの時間が所定
時間より大きいときは、自己消弧型制御素子は、設定さ
れた位相までオンを続け、設定された位相でオフとな
る。If the time from when the first comparison signal reaches the first reference value to the time when the first comparison signal reaches the first reference value is longer than a predetermined time, the self-extinguishing type control element sets the set phase. It continues to turn on until it turns off at the set phase.
【００１１】[0011]
【実施例】図１は、本発明の実施例の照明装置を主とし
てブロックで示した図であり、図２は図１の照明装置の
各部波形のタイムチャートである。図１において、１は
交流電源、２は白熱ランプ等の照明負荷であり、交流電
源１と照明負荷２との間に照明装置３が設けられてい
る。照明装置３は互いに逆方向に直列接続されたトラン
ジスタ，ＭＯＳＦＥＴ，ＩＧＢＴなどの自己消弧型制御
素子４，５と、この自己消弧型制御素子４，５とそれぞ
れ逆方向に並列に設けられたダイオード６，７と、自己
消弧型制御素子４と並列に設けられたサイリスタ８と、
自己消弧型制御素子５と並列に設けられたサイリスタ９
と、自己消弧型制御素子４，５を駆動させる自己消弧型
制御素子用駆動装置１０と、サイリスタ８，９を駆動さ
せるサイリスタ駆動装置１１と、ＣＰＵ（中央演算処理
装置）を有し両駆動装置１０，１１を制御する制御装置
１２により構成されている。なお、１３は自己消弧型制
御素子４，５の位相を指令する指令信号の入力端子であ
る。また、ダイオード６，７との接続点と、サイリスタ
８，９との接続点との間に電流検出器３１を設け、電流
検出器３１の検出信号と第１の基準電源３３の第１の基
準値及び第２の基準電源の第２の基準値とを比較し、比
較信号を制御装置１２に入力する比較器３２を設けてい
る。FIG. 1 is a block diagram mainly showing a lighting apparatus according to an embodiment of the present invention, and FIG. 2 is a time chart of waveforms of respective parts of the lighting apparatus of FIG. In FIG. 1, reference numeral 1 denotes an AC power supply, 2 denotes a lighting load such as an incandescent lamp, and a lighting device 3 is provided between the AC power supply 1 and the lighting load 2. The illuminating device 3 is provided with self-extinguishing control elements 4 and 5 such as transistors, MOSFETs, and IGBTs connected in series in opposite directions, and in parallel with the self-extinguishing control elements 4 and 5 in opposite directions. Diodes 6, 7 and a thyristor 8 provided in parallel with the self-extinguishing control element 4,
Thyristor 9 provided in parallel with self-extinguishing control element 5
A self-extinguishing type control element driving device 10 for driving the self-extinguishing type control elements 4 and 5, a thyristor driving device 11 for driving the thyristors 8 and 9, and a CPU (central processing unit). The control device 12 controls the driving devices 10 and 11. Reference numeral 13 denotes an input terminal of a command signal for commanding the phases of the self-extinguishing type control elements 4 and 5. Further, a current detector 31 is provided between a connection point with the diodes 6 and 7 and a connection point with the thyristors 8 and 9, and a detection signal of the current detector 31 and a first reference voltage of the first reference power supply 33 are provided. A comparator 32 is provided for comparing the value with the second reference value of the second reference power supply and inputting a comparison signal to the control device 12.
【００１２】まず、定常時の動作について説明する。
今、交流電源１のＡ端子の電位がＢ端子の電位より高い
半波の場合、自己消弧型制御素子４に駆動装置１０の駆
動信号を入力すると、交流電源１、自己消弧型制御素子
４、電流検出器３１、ダイオード７、照明負荷２を介し
て電流が流れる。また、Ｂ端子の電位がＡ端子の電位よ
り高い半波では交流電源１、照明負荷２、自己消弧型制
御素子５、電流検出器３１、ダイオード６を介して電流
が流れる。この時、自己消弧型制御素子４，５は、当該
半波の零電位から交流電源の所定位相まで通電される。
なお、この時サイリスタ８，９には駆動装置１１のゲー
ト信号が入力されておらずサイリスタ８，９はオフして
いる。First, the normal operation will be described.
Now, when the potential of the A terminal of the AC power supply 1 is a half-wave higher than the potential of the B terminal, when the drive signal of the driving device 10 is input to the self-extinguishing control element 4, the AC power supply 1 and the self-extinguishing control element 4. A current flows through the current detector 31, the diode 7, and the lighting load 2. In a half wave where the potential of the B terminal is higher than the potential of the A terminal, a current flows through the AC power supply 1, the lighting load 2, the self-extinguishing control element 5, the current detector 31, and the diode 6. At this time, the self-extinguishing type control elements 4 and 5 are energized from the zero potential of the half-wave to a predetermined phase of the AC power supply.
At this time, the gate signal of the driving device 11 is not input to the thyristors 8 and 9 and the thyristors 8 and 9 are off.
【００１３】次に起動時の動作について説明する。今、
交流電源１のＡ端子の電位からＢ端子の電位より高い半
波の場合、自己消弧型制御素子４に自己消弧型制御素子
用駆動装置１０の駆動信号を入力すると、交流電源１、
自己消弧型制御素子４、電流検出器３１、ダイオード
７、照明負荷２を介して電流が流れる。この時、照明負
荷２が冷状態である場合、低インピーダンスのために大
きな電流が照明負荷２に流れる。Next, the operation at the time of startup will be described. now,
In the case of a half-wave higher than the potential of the A terminal to the potential of the B terminal of the AC power supply 1, when the drive signal of the self-extinguishing control element driving device 10 is input to the self-extinguishing control element 4, the AC power supply 1,
A current flows through the self-extinguishing control element 4, the current detector 31, the diode 7, and the lighting load 2. At this time, when the lighting load 2 is in a cold state, a large current flows through the lighting load 2 due to low impedance.
【００１４】照明負荷２に流れた電流が電流検出器３１
により検出され、検出信号が第１の基準電源３３の第１
の基準値に達すると、図２（ｂ）に示すように、比較器
３２から第１の比較信号が出力され、制御装置１２に比
較信号が入力される。そして、比較信号が、交流電源の
当該半波の零電位から第１の基準値に達する時刻ｔ１ま
での時間が所定時間内に制御装置１２に入力すると、す
なわち、単位時間当りの電流の立ち上がりが所定値より
大きいときは、図２（ｄ）に示すように時刻ｔ２に制御
装置１２からサイリスタ駆動装置１１に指令信号を入力
して、サイリスタ８にゲート信号を入力し、サイリスタ
８をオンさせる。さらに電流が立上がり、電流検出器３
１の検出信号が第２の基準電源３４の第２の基準値に達
すると、図２（ｃ）に示すように時刻ｔ３に比較器３２
から第２の比較信号が出力され、制御装置１２に入力さ
れる。これにより、制御装置１２から駆動装置１０に指
令信号を入力し、自己消弧型制御素子４への駆動信号の
停止を指令し、自己消弧型制御素子４はオフする。The current flowing to the lighting load 2 is a current detector 31
Is detected by the first reference power supply 33
2, the first comparison signal is output from the comparator 32 and the comparison signal is input to the controller 12 as shown in FIG. Then, when the comparison signal is input to the control device 12 within a predetermined time from the zero potential of the half-wave of the AC power supply to the time t1 when the first reference value is reached, that is, the rise of current per unit time occurs. When it is larger than the predetermined value, a command signal is input from the control device 12 to the thyristor driving device 11 at time t2, a gate signal is input to the thyristor 8, and the thyristor 8 is turned on, as shown in FIG. Further, the current rises and the current detector 3
When the first detection signal reaches the second reference value of the second reference power supply 34, the comparator 32 at time t3 as shown in FIG.
Output a second comparison signal and input it to the control device 12. As a result, a command signal is input from the control device 12 to the driving device 10 to instruct the self-extinguishing type control element 4 to stop the driving signal, and the self-extinguishing type control element 4 is turned off.
【００１５】次の半波のＢ端子の電位がＡ端子の電位よ
り高い半波に入ると、制御装置１２から図２（ａ）に示
すよう自己消弧型制御素子５が零電位から通電するよう
に駆動信号の出力を指令し、自己消弧型制御素子５に駆
動信号が入力され、交流電源１、照明負荷２、自己消弧
型制御素子５、電流検出器３１、ダイオード６を介して
電流が流れる。そして、電流検出器３１により照明負荷
２に流れる電流が検出され、検出信号が第１の基準電源
３３の基準に達すると、図２（ｂ）に示すように比較器
３２から第１の比較信号が出力され、制御装置１２に第
１の比較信号が入力される。そして、比較信号が交流電
源の当該半波の零電位から第１の基準値に達する時刻ｔ
５までの時間が所定時間内に制御装置１２に入力する
と、すなわち、単位時間当りの電流の立上がりが所定時
間より大きいときは、図２（ｄ）に示すように時刻ｔ５
に制御装置１２からサイリスタ駆動装置１１に指令信号
を入力してサイリスタ８にゲート信号を入力し、サイリ
スタ８をオンさせる。さらに電流が立上がり、電流検出
器３１の検出信号が第２の基準値に達する、図２（ｃ）
に示すように時刻ｔ６に比較器３２から第２の比較信号
が出力され制御装置に入力される。これにより、制御装
置１２から自己消弧型制御素子５への駆動信号の停止を
指令し、自己消弧型制御素子４はオフする。When the potential of the terminal B of the next half-wave enters a half-wave higher than the potential of the terminal A, the self-extinguishing type control element 5 is energized from the zero potential from the control device 12 as shown in FIG. In this manner, the output of the drive signal is commanded, and the drive signal is input to the self-extinguishing type control element 5, via the AC power supply 1, the lighting load 2, the self-extinguishing type control element 5, the current detector 31 and the diode 6 Electric current flows. When the current flowing through the lighting load 2 is detected by the current detector 31 and the detection signal reaches the reference of the first reference power supply 33, the first comparison signal is output from the comparator 32 as shown in FIG. Is output, and the first comparison signal is input to the control device 12. Then, the time t at which the comparison signal reaches the first reference value from the zero potential of the half-wave of the AC power supply.
When the time up to 5 is input to the control device 12 within the predetermined time, that is, when the rise of the current per unit time is longer than the predetermined time, as shown in FIG.
Then, a command signal is input from the control device 12 to the thyristor driving device 11, a gate signal is input to the thyristor 8, and the thyristor 8 is turned on. When the current further rises and the detection signal of the current detector 31 reaches the second reference value, FIG.
As shown in (2), at time t6, the second comparison signal is output from the comparator 32 and input to the control device. As a result, the control device 12 instructs the self-extinguishing control element 5 to stop the drive signal, and the self-extinguishing control element 4 is turned off.
【００１６】そして、次の半波のＡ端子の電位がＢ端子
の電位より高い半波になり、上述のように自己消弧型制
御素子４に自己消弧型制御素子用駆動装置１０の駆動信
号が入力すると、交流電源１、自己消弧型制御素子４、
電流検出器３１、ダイオード７、照明負荷２を介して電
流が流れる。照明負荷２に流れた電流が電流検出器３１
により検出され、制御装置１２に比較信号が入力され
る。そして、比較信号が交流電源の零電位から第１の基
準値に達する時刻までの時間が所定時間より長い場合に
は、自己消弧型制御素子４が駆動装置１０によって通常
制御される時刻ｔ７までオンを続ける。以下順次繰返
す。Then, the potential of the terminal A of the next half-wave becomes a half-wave higher than the potential of the terminal B, and the self-extinguishing control element 4 drives the self-extinguishing control element driving device 10 as described above. When the signal is input, the AC power supply 1, the self-extinguishing type control element 4,
A current flows through the current detector 31, the diode 7, and the lighting load 2. The current flowing to the lighting load 2 is a current detector 31
, And a comparison signal is input to the control device 12. If the time from when the comparison signal reaches the first reference value to the zero potential of the AC power supply is longer than the predetermined time, the self-extinguishing type control element 4 is controlled until the time t7 when the driving device 10 normally controls the self-extinguishing control element 4. Keep on. The following is repeated sequentially.
【００１７】なお、照明負荷の短絡時には、電流検出器
３１により検出された検出信号が第１の基準値に達する
までの時間が短くなる。そこで、所定時間より短い場合
には、制御装置１２に信号を入力して、駆動装置１０を
制御して駆動装置１０からの駆動信号を停止させ、自己
消弧型制御素子４又は５をオフさせて、照明装置を負荷
短絡から保護させることができる。When the illumination load is short-circuited, the time required for the detection signal detected by the current detector 31 to reach the first reference value is shortened. Therefore, when the time is shorter than the predetermined time, a signal is input to the control device 12 to control the drive device 10 to stop the drive signal from the drive device 10 and to turn off the self-extinguishing type control element 4 or 5. Thus, the lighting device can be protected from a load short circuit.
【００１８】[0018]
【発明の効果】照明負荷が低インピーダンスの場合に
も、起動時に過大電流がサイリスタを介して流れるの
で、電流容量の小さな自己消弧型制御素子を損傷させる
ことはない。また、半波ごとに起動時の過大電流を測定
し、サイリスタを全導通させるか否かを判定して、起動
を速めることができる。さらに、サイリスタの全導通に
よる負荷のランプが発光しすぎるのを防止することがで
きる。Even if the lighting load has a low impedance, an excessive current flows through the thyristor at the time of starting, so that the self-extinguishing type control element having a small current capacity is not damaged. In addition, it is possible to speed up the start-up by measuring an excessive current at the time of start-up for each half-wave and determining whether or not the thyristor is fully turned on. Further, it is possible to prevent the load lamp from emitting too much light due to full conduction of the thyristor.
【図１】この発明の照明装置の一実施例のブロック図で
ある。FIG. 1 is a block diagram of one embodiment of a lighting device of the present invention.
【図２】図１は各部波形のタイムチャートである。FIG. 1 is a time chart of waveforms of respective parts.
【図３】従来の照明装置のブロック図である。FIG. 3 is a block diagram of a conventional lighting device.
【図４】図３の照明装置の電流波形図である。FIG. 4 is a current waveform diagram of the lighting device of FIG. 3;
１ 交流電源 ２ 照明負荷（ランプ） ３ 照明装置 ４，５ 自己消弧型制御素子 ６，７ ダイオード ８，９ サイリスタ １０ 自己消弧型制御素子用駆動装置 １１ サイリスタ駆動装置 １２ 制御装置 １３ 指令端子 ３１ 電流検出器 ３２ 比較器 ３３ （第１の）基準電源 ３４ （第２の）基準電源 DESCRIPTION OF SYMBOLS 1 AC power supply 2 Lighting load (lamp) 3 Lighting device 4,5 Self-extinguishing type control element 6,7 Diode 8,9 Thyristor 10 Self-extinguishing type control element driving device 11 Thyristor driving device 12 Control device 13 Command terminal 31 Current detector 32 comparator 33 (first) reference power supply 34 (second) reference power supply
フロントページの続き (58)調査した分野(Int.Cl.7，ＤＢ名) H05B 39/08 H05B 37/02 Continuation of the front page (58) Field surveyed (Int.Cl. 7 , DB name) H05B 39/08 H05B 37/02
Claims (1)
消弧型制御素子と、上記自己消弧型制御素子と逆方向に
並列に設けられたダイオードと、上記自己消弧型制御素
子と並列に設けられたサイリスタと、上記自己消弧型制
御素子を駆動する自己消弧型制御素子用駆動装置と、上
記サイリスタを駆動するサイリスタ駆動装置とにより構
成された照明装置において、起動時に上記自己消弧型制
御素子に流れる電流を検出する電流検出器と、上記電流
検出器の検出信号と第１及び第２の基準値とを比較し、
上記検出信号が上記第１及び第２に達すると、比較信号
を出力する比較器と、サイクルの交流電源電圧の零電位
から上記自己消弧型制御素子の通電を指令するととも
に、上記零電位から上記第１の基準値に達する時刻まで
の時間が所定時間より長いときに上記サイクル間サイリ
スタをオンさせ、さらに上記第２の基準値に達すると上
記自己消弧型制御素子をオフさせる制御装置とを設けた
ことを特徴とする照明装置。1. A self-extinguishing control element for feeding power to a lighting load by phase control, a diode provided in parallel with the self-extinguishing control element in a direction opposite to the self-extinguishing control element, and in parallel with the self-extinguishing control element. A self-extinguishing control element driving device for driving the self-extinguishing control element, and a thyristor driving device for driving the thyristor; A current detector for detecting a current flowing through the mold control element, and comparing a detection signal of the current detector with first and second reference values;
When the detection signal reaches the first and second detection signals, a comparator for outputting a comparison signal and a command to energize the self-extinguishing type control element based on the zero potential of the AC power supply voltage in the cycle are provided. A control device that turns on the thyristor during the cycle when the time until the time when the first reference value is reached is longer than a predetermined time, and further turns off the self-extinguishing control element when the time reaches the second reference value; A lighting device, comprising:
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7180898A JP3064219B2 (en) | 1995-06-23 | 1995-06-23 | Lighting equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7180898A JP3064219B2 (en) | 1995-06-23 | 1995-06-23 | Lighting equipment |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH097773A JPH097773A (en) | 1997-01-10 |
| JP3064219B2 true JP3064219B2 (en) | 2000-07-12 |
Family
ID=16091251
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP7180898A Expired - Fee Related JP3064219B2 (en) | 1995-06-23 | 1995-06-23 | Lighting equipment |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3064219B2 (en) |
-
1995
- 1995-06-23 JP JP7180898A patent/JP3064219B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JPH097773A (en) | 1997-01-10 |
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