JP2005267999A - Led type lighting system - Google Patents

Led type lighting system Download PDF

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JP2005267999A
JP2005267999A JP2004077531A JP2004077531A JP2005267999A JP 2005267999 A JP2005267999 A JP 2005267999A JP 2004077531 A JP2004077531 A JP 2004077531A JP 2004077531 A JP2004077531 A JP 2004077531A JP 2005267999 A JP2005267999 A JP 2005267999A
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circuit
led
lighting
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JP4496812B2 (en
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Junji Hasegawa
潤治 長谷川
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Toshiba Lighting & Technology Corp
東芝ライテック株式会社
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    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02BCLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
    • Y02B20/00Energy efficient lighting technologies
    • Y02B20/40Control techniques providing energy savings
    • Y02B20/42Control techniques providing energy savings based on timing means or schedule

Abstract

PROBLEM TO BE SOLVED: To provide an LED type lighting system capable of carrying out light modulation control up to 0-100% even when a lighting frequency is high.
SOLUTION: Power for lighting an LED load 12 is inputted through an input circuit 11 and a power factor of the power inputted from the input circuit 11 is improved by a power factor improvement circuit 14. A constant-voltage circuit 16 obtains a current supplied to the LED load 12 from the output of the power factor improvement circuit 14. A lighting control circuit 18 determines a light modulation ratio based on a light modulation component identified by an input detection circuit 17, controls the lighting of the LED load 12 by PWM control when the light modulation ratio is higher than a predetermined value, and controls the lighting of the LED load 12 by crest value control when the light modulation ratio is lower than the predetermined value.
COPYRIGHT: (C)2005,JPO&NCIPI

Description

本発明は、光源部にLEDを用いたスタジオや劇場で使用されるLED式照明装置に関する。 The present invention relates to LED-type lighting device used in a studio or theater using LED light source unit.

スタジオや劇場で使用される照明装置として、LEDを光源部に用いたLED式照明装置が開発されている。 A lighting device for use in a studio or theater, LED type illumination device has been developed using an LED light source unit. このようなLED式照明装置においては、LED式照明装置にサイリスタで位相制御した調光信号成分を含んだ電源を供給するようにしたもの、LED式照明装置に商用電源を供給し外部調光信号を入力してLEDを調光するもの、また、LED式照明装置に付加されている調光ボリュームで直接的にLEDを調光するもの等が採用されている。 In such a LED type lighting apparatus, those with thyristors LED type lighting apparatus adapted to supply power including the dimming signal component phase control, external dimming signal to supply commercial power to the LED type lighting device enter intended to dimming LED and also directly such as those of the LED modulating light in addition has been that the light control knob to the LED type illumination device is employed. そして、これらにより調光制御が行われる。 And these the dimming control is performed.

この調光制御方式には、波高値制御あるいはPWM制御がある。 The dimming control method, there is a peak value control or PWM control. 波高値制御を行うものとしては、負荷の電力消費が増加した場合にはスレッショルド電圧を上げ、逆に負荷の電力消費が減少した場合にはスレッショルド電圧を下げ、調光や負荷の変化に対して対応できるようにしたものがある(例えば、特許文献1参照)。 As performing a crest value control raises the threshold voltage when the power consumption of the load increases, lowering the threshold voltage when the power consumption of the load conversely decreased, to changes in dimming and load there are those to accommodate (e.g., see Patent Document 1).

また、PWM制御を行うものとしては、発光ダイオードに供給する電流のオン時間とオフ時間との比率を制御し、このように制御された電流を発光ダイオードに供給することによって得た光で蛍光体を発光させ調光するようにしたものがある(例えば、特許文献2参照)。 Moreover, those performing PWM control to control the ratio between on-time and off-time of the current supplied to the light emitting diodes, phosphor light obtained by supplying the controlled current to the light emitting diode there are those to dim light is emitted (e.g., see Patent Document 2).
特開平11−67471号公報([0028]、[0029]) JP-11-67471 discloses ([0028], [0029]) 特開2002−324685号公報([0006]、[0007]) JP 2002-324685 JP ([0006], [0007])

ところが、PWM制御はLEDに供給する電流のオン時間とオフ時間との比率を制御するものであるから、発光を暗くする深調光の場合には、LEDに供給する電流のオン時間幅を短くしなければならないので、点灯周波数が高周波である場合には制御ができなくなることがある。 However, since the PWM control is for controlling the ratio of the ON time of the current supplied to the LED and off times, in the case of deep dimming to dim the light emission, shorten the ON time width of the current supplied to the LED since they must be, it may not be possible to control when the lighting frequency is a high frequency. すなわち、例えば、点灯周波数が約10kHz以上で1024階調で調光する場合には、1パルスは100μsec以下となり、この100μsecを1024階調で調光しなければならないので、最小のオン時間幅は約100μsec以下(10MHz以上)となってしまう。 That is, for example, when the lighting frequency is dimmed at 1024 gradations at about 10kHz or more, one pulse becomes less 100 .mu.sec, since they must be dimmed at 1024 levels this 100 .mu.sec, the minimum on-time width about 100μsec becomes less than the (more than 10MHz). 100μsec以下で電流のオン時間幅を確保するには、半導体素子の信頼性を大きく高めなければならない。 To ensure on-time width of the current in 100μsec below, it must be increased greatly and the reliability of the semiconductor device. 一方、波高値制御の場合、特にLEDが高出力の場合には電圧に対する電流の変化が大きくなるので、制御が非常に困難となる。 On the other hand, if the peak value control, especially since the change in current becomes large with respect to voltage when the LED is a high output, control becomes very difficult.

本発明の目的は、点灯周波数が高い場合であっても適正に0〜100%までの調光制御を行うことができるLED式照明装置を提供することである。 An object of the present invention is to provide an LED-type illumination device capable of, even when the lighting frequency is high performing proper dimming control from 0 to 100%.

請求項1の発明に係わるLED式照明装置は、LEDを点灯するための電源を入力する入力回路と;前記入力回路から入力される電源の力率を改善する力率改善回路と;前記力率改善回路の出力からLEDに供給する電流を得るための定電圧回路と;前記入力回路に入力される電源に含まれた調光信号成分を識別する入力検出回路と;前記入力検出回路で識別した調光信号成分に基づいて調光比を判定し、調光比が所定値より高いときはPWM制御により前記LEDを点灯制御し所定値より低いときは波高値制御により前記LEDを点灯制御する点灯制御回路と;を備えたことを特徴とする。 LED type lighting device according to the invention of claim 1 includes an input circuit and for inputting a power supply for lighting the LED; and power factor improvement circuit for improving the power factor of the power inputted from said input circuit; the power factor a constant voltage circuit for the output of the correction circuit to obtain the current supplied to the LED; and an input detecting circuit for identifying the power supply includes dimming signal component input to the input circuit; identified by the input detection circuit determines dimming ratio based on the dimming signal component, adjusting the lighting light ratio is higher than the predetermined value is lower than a predetermined value and lighting control the LED by the PWM control which controls lighting of the LED by the peak value control characterized by comprising a; and a control circuit.

本発明および以下の発明において、特に指定しない限り用語の定義および技術的意味は以下による。 In the present invention and the following invention, the definitions and technical meanings of terms unless otherwise indicated by the following. LED式照明装置は光源としてLEDを用いた照明装置であり、主としてスタジオや舞台の照明に使用される。 LED-type illumination device is an illumination device using an LED as a light source, is used mainly for studio or stage lighting of. 入力回路は、LED負荷を点灯するための電源を入力するものであり、サイリスタで位相制御された調光信号成分を含んだ電源を入力する。 Input circuit is for inputting the power to light the LED load, and inputs the power supply including a phase-controlled dimming signal components in the thyristor. 力率改善回路は入力回路から入力される電源の力率を改善するものである。 Power factor correction circuit is to improve the power factor of the power inputted from the input circuit. 定電圧回路は力率改善回路の出力からLEDに供給する電流を得るものである。 Constant voltage circuit is to obtain a current supplied from the output of the power factor correction circuit the LED. 入力検出回路は、入力回路に入力される電源に含まれた調光信号成分を識別する。 Input detection circuit identifies the dimming signal component included in the power input to the input circuit. 例えば、位相制御された電源の実効値または平均値を検出して調光信号成分を取り出す。 For example, taking out a dimming signal component by detecting the phase controlled effective value or average value of the power supply.

点灯制御回路は、入力検出回路で識別した調光信号成分に基づいて調光比を判定し、調光比が所定値より高いときはPWM制御によりLEDを点灯制御し、所定値より低いときは波高値制御によりLEDを点灯制御する。 Lighting control circuit, determines a dimming ratio based on the dimming signal component identified by the input detection circuit, adjustment when the optical ratio is higher than a predetermined value the LED lights controlled by PWM control, it is lower than a predetermined value It controls lighting of the LED by the peak value control. 調光比の所定値は5%〜20%程度に設定される。 Predetermined value of the dimming ratio is set to approximately 5% to 20%. なお、LED負荷12のLEDの順電圧特性により調光比の所定値を高くしてもよい。 It is also possible to increase the predetermined value of more dimming ratio forward voltage characteristics of the LED of the LED load 12.

本発明によれば、調光比が所定値より高いときにはPWM制御とし、調光比が所定値より小さい深調光時には波高値制御に切り替えるので、所定値以下の深調光時においても深調光時においても適正に調光制御ができる。 According to the present invention, the dimming ratio is set to PWM control when higher than the predetermined value, adjusting the light ratio is switched to a peak value control during depth less dimming than a predetermined value, the depth even when the predetermined value or less depth adjustment dimming it is properly dimming control even at the time of light.

請求項2の発明に係わるLED式照明装置は、LEDを点灯するための電源を入力する入力回路と;前記入力回路から入力される電源の力率を改善する力率改善回路と;前記力率改善回路の出力からLEDに供給する電流を得るための定電圧回路と;前記入力回路に入力される電源に含まれた調光信号成分を識別する入力検出回路と;前記入力検出回路で識別された調光信号成分、外部調光信号、調光ボリュームからの調光信号を切り替える切替回路と;前記切替回路からの出力信号に基づいて調光比を判定し、調光比が所定値より高いときはPWM制御により前記LEDを点灯制御し所定値より低いときは波高値制御により前記LEDを点灯制御する点灯制御回路と;を備えたことを特徴とする。 LED type lighting device according to the invention of claim 2, the input circuit and input the power to light the LED; and power factor improvement circuit for improving the power factor of the power inputted from said input circuit; the power factor a constant voltage circuit for the output of the correction circuit to obtain the current supplied to the LED; and an input detecting circuit for identifying the power supply includes dimming signal component input to the input circuit; identified by the input detection circuit other dimming signal component, an external dimming signal, and a switching circuit for switching the dimming signal from the light control knob; determines dimming ratio based on the output signal from the switching circuit, the dimming ratio is higher than the predetermined value time is lower than a predetermined value and lighting control the LED by the PWM control is a lighting control circuit that controls lighting of the LED by the peak value control; characterized by comprising a.

切替回路は、入力検出回路で識別された調光信号成分、外部調光信号、調光ボリュームからの調光信号を切り替えて、定電圧回路および点灯制御回路に調光信号を出力するものである。 Switching circuit, the dimming signal components identified by the input detection circuit, by switching the external dimming signal, a dimming signal from the light control knob, and outputs a dimming signal to the constant voltage circuit and a lighting control circuit . 入力回路から入力される電源がサイリスタで位相制御した調光信号成分を含んだ電源だけでなく、商用電源である場合にも適用できる。 Not only does the supply including a dimming signal component phase controlled power thyristor inputted from the input circuit, also applicable to the case where a commercial power source.

本発明によれば、請求項1の発明に効果に加え、切替回路により調光信号を切り替えることができるので、必要に応じて適切な場所から調光制御ができる。 According to the present invention, in addition to the effect to the first aspect of the invention, it is possible to switch the more dimming signal to the switching circuit, it is dimming control from the appropriate location as required. また、入力回路から入力される電源が商用電源である場合であっても調光制御が可能となる。 The power input from the input circuit becomes possible even light control even when a commercial power source.

請求項1の発明によれば、調光比が所定値より高いときにはPWM制御とし、調光比が所定値より小さい深調光時には波高値制御に切り替えるので、所定値以下の深調光時においても深調光時においても適正に調光制御ができる。 According to the present invention, the dimming ratio is set to PWM control when higher than the predetermined value, adjusting the light ratio is switched to a peak value control during depth less dimming than a predetermined value, during a predetermined value or less depth dimming it is properly dimming control even at the time also deep dimming.

請求項2の発明によれば、請求項1の発明に効果に加え、切替回路により調光信号を切り替えることができるので、必要に応じて適切な場所から調光制御ができる。 According to the invention of claim 2, in addition to the effect to the first aspect of the invention, it is possible to switch the more dimming signal to the switching circuit, it is dimming control from the appropriate location as required. また、入力回路から入力される電源が商用電源である場合であっても調光制御が可能となる。 The power input from the input circuit becomes possible even light control even when a commercial power source.

図1は本発明の第1の実施の形態に係わるLED式照明装置の構成図である。 Figure 1 is a block diagram of a LED type lighting apparatus according to a first embodiment of the present invention. 入力回路11はLED負荷12を点灯するための電源を入力するものであり、サイリスタで位相制御した調光信号成分を含んだ電源を入力する。 Input circuit 11 is used to input power to light the LED load 12, and inputs a power supply including a phase control dimmer signal components in the thyristor. 入力回路11で入力した電源は整流回路13で整流され、力率改善回路14に入力される。 Power input by the input circuit 11 is rectified by the rectifier circuit 13, is input to the power factor correction circuit 14. 力率改善回路14は入力回路11に入力される電源の入力電圧と入力電流とが同相になるようにして電源の力率を改善するものであり、これにより、LED負荷12に供給される電力のロスを低減している。 Power power factor correction circuit 14 are those as input voltage of the power source inputted to the input circuit 11 and the input current is in phase to improve the power factor of the power supply, thereby, supplied to the LED load 12 thereby reducing the loss. 力率改善回路14の出力は平滑回路15で平滑されて定電圧回路16に入力される。 The output of the power factor improvement circuit 14 is inputted is smoothed by the smoothing circuit 15 to the constant voltage circuit 16. 定電圧回路16は、LED負荷12に供給する電圧を一定値に保持して、LED負荷12に流れる電流を個別に調整する。 Constant voltage circuit 16 holds the voltage supplied to the LED load 12 to a constant value, adjusting the current flowing through the LED load 12 separately.

一方、入力検出回路17は入力回路11から入力したサイリスタで位相制御された調光信号成分を含んだ電源を入力し、入力した電源の実効値または平均値を検出して調光信号成分を取り出す。 On the other hand, the input detection circuit 17 inputs the containing phase control dimming signal component thyristors inputted from the input circuit 11 power, takes out the detected dimming signal component an effective value or average value of the input power . そして、取り出した調光信号成分を定電圧回路16および点灯制御回路18に出力する。 Then, it outputs the retrieved dimming signal component to the constant voltage circuit 16 and the lighting control circuit 18. 各々の定電圧回路16では、調光信号成分に基づき出力電圧を調整する。 In each of the constant-voltage circuit 16 adjusts the output voltage based on the dimming signal component.

また、点灯制御回路18は、入力検出回路で識別した調光信号成分に基づいてドライブ回路19を介してLED負荷12を調光制御する。 The lighting control circuit 18 controls dimming the LED load 12 through the drive circuit 19 based on the dimming signal component identified by the input detection circuit. すなわち、点灯制御回路18の判定部20は、入力検出回路17で識別した調光信号成分に基づいて調光比を判定し、調光比が所定値より高いか否かを判定する。 That is, the determination unit 20 of the lighting control circuit 18 determines the dimming ratio based on the dimming signal component identified by the input detection circuit 17, the dimming ratio is equal to or is higher than a predetermined value. 調光比が所定値より高いときはPWM制御部21を駆動し、PWM制御部21はPWM制御によりドライブ回路19を介してLED負荷12を点灯制御する。 Dimming ratio is higher than a predetermined value and drives the PWM control unit 21, PWM control section 21 controls lighting of the LED load 12 via the drive circuit 19 by PWM control. 一方、調光比が所定値より低いときは波高値制御部22を駆動し、波高値制御部22は波高値制御によりドライブ回路19を介してLED負荷12を点灯制御する。 On the other hand, when the dimming ratio is lower than a predetermined value and drives the crest value control unit 22, peak value control unit 22 controls lighting of the LED load 12 via the drive circuit 19 by the pulse height value control.

図2は、点灯制御回路18で点灯制御されたLED負荷12の発光波形の一例を示す発光波形図である。 Figure 2 is a light emission waveform diagram showing an example of a light emission waveform of the LED load 12 which is lighting control by the lighting control circuit 18. 図2では調光比の所定値として10%である場合を示している。 It shows a case is 10% as the predetermined value in Fig. 2 the dimming ratio. すなわち、調光比が10%以上の領域ではPWM制御部21によりPWM制御が行われる。 That is, the dimming ratio PWM control is performed by the PWM control unit 21 is 10% or more of the area. 一方、調光比が10%未満の領域ではパルス幅は調光比が10%のときのパルス幅で固定され、波高値制御部22により波高値制御が行われる。 On the other hand, adjusting the pulse width in the region of the light ratio is less than 10% dimming ratio is fixed by the pulse width when the 10% peak value control is performed by the crest value control unit 22. 調光比の所定値は5%〜20%程度に設定される。 Predetermined value of the dimming ratio is set to approximately 5% to 20%. なお、LED負荷12のLEDの順電圧特性により調光比の所定値を高くしてもよい。 It is also possible to increase the predetermined value of more dimming ratio forward voltage characteristics of the LED of the LED load 12.

第1の実施の形態によれば、調光比が所定値より高いときにはPWM制御とし、調光比が所定値より小さい深調光時には波高値制御に切り替えるので、深調光時においても適正に調光制御ができる。 According to the first embodiment, the dimming ratio is set to PWM control when higher than the predetermined value, adjusting the light ratio is switched to a peak value control during depth less dimming than a predetermined value, properly even when deep dimming it is dimming control. すなわち、所定値以下の深調光時においてはパルス幅が所定値の調光時のパルス幅に保持され、波高値の大きさを変えて調光するので、深調光時においても適正に調光制御ができる。 That is, the pulse width at the time of a predetermined value or less depth dimming is held to the pulse width during dimming predetermined value, the dimming by changing the magnitude of the peak value, properly adjusted even when deep dimming it is light control.

図3は本発明の第2の実施の形態に係わるLED式照明装置の構成図である。 Figure 3 is a block diagram of a LED type lighting apparatus according to a second embodiment of the present invention. この第2の実施の形態は、図1に示した第1の実施の形態に対し、入力検出回路17からの電源に含まれた調光信号成分、外部調光信号、調光ボリューム23からの調光信号を切り替えて、定電圧回路16および点灯制御回路18に調光信号を出力する切替回路24を設けたものである。 Of the second embodiment, with respect to the first embodiment shown in FIG. 1, power supply included dimming signal component from the input detection circuit 17, an external dimming signal, from the light control knob 23 switches the dimming signal, it is provided with a switching circuit 24 for outputting a constant voltage circuit 16 and the lighting control circuit 18 dimming signals. 図1と同一要素には同一符号を付し重複する説明は省略する。 And duplicate explanations given the same reference numerals in FIG. 1 and the same elements will be omitted.

第2の実施の形態では、入力回路11から入力される電源がサイリスタで位相制御した調光信号成分を含んだ電源である場合、または商用電源である場合にも適用できる。 In the second embodiment can be applied to a case when the power source inputted from the input circuit 11 is a power supply including a phase control dimmer signal components in a thyristor, or a commercial power supply. いま、入力回路11からサイリスタで位相制御した調光信号成分を含んだ電源が供給されたとする。 Now, the power supply including a dimming signal component phase-controlled is supplied by the thyristor from the input circuit 11. この状態で切替回路24により調光ボリューム23に切り替えられたときは、調光ボリューム23からの調光信号が定電圧回路16および点灯制御回路18に入力される。 When switched to the more the light control knob 23 to the switching circuit 24 in this state, the dimming signal from the light control knob 23 is input to the constant voltage circuit 16 and the lighting control circuit 18. 定電圧回路16では、その調光信号に基づき出力電圧を調整する。 In the constant voltage circuit 16 adjusts the output voltage based on the dimming signal.

また、点灯制御回路18の判定部20は、入力検出回路17で識別した調光信号成分が入力されると、調光信号成分に基づいて調光比を判定し、調光比が所定値より高いか否かを判定する。 The determination unit 20 of the lighting control circuit 18, when the dimming signal component identified by the input detection circuit 17 is inputted, it is determined dimming ratio based on the dimming signal component, the dimming ratio is above the predetermined value determines whether high or not. 判定部20は、調光比が所定値より高いときはPWM制御部21を駆動し、調光比が所定値より低いときは波高値制御部22を駆動する。 Determination unit 20, the dimming ratio is is higher than a predetermined value and drives the PWM control unit 21, when the dimming ratio is lower than the predetermined value to drive the peak value controller 22. PWM制御部21は、判定部20により駆動がかけられるとPWM制御によりドライブ回路19を介してLED負荷12を点灯制御する。 PWM control unit 21, when the drive is applied by the judging unit 20 controls lighting of the LED load 12 via the drive circuit 19 by PWM control. 一方、波高値制御部22は判定部20により駆動がかけられると、波高値制御によりドライブ回路19を介してLED負荷12を点灯制御する。 On the other hand, the peak value control unit 22 when the drive is applied by the judging unit 20 controls lighting of the LED load 12 via the drive circuit 19 by the pulse height value control.

一方、切替回路24により外部調光信号に切り替えられたときも、同様に、外部調光信号が定電圧回路16および点灯制御回路18に入力される。 On the other hand, even when switched to an external dimming signal by switching circuit 24, similarly, the external dimming signal is input to the constant voltage circuit 16 and the lighting control circuit 18. そして、定電圧回路16では、その外部調光信号に基づき出力電圧を調整し、点灯制御回路18では、その外部調光信号に基づいて調光比を判定し、調光比が所定値より高いときはPWM制御によりLED負荷12を点灯制御し、所定値より低いときは波高値制御によりLED負荷12を点灯制御する。 Then, the constant voltage circuit 16 adjusts the output voltage based on the external dimming signal, the lighting control circuit 18 determines the dimming ratio based on the external dimming signal, the dimming ratio is higher than a predetermined value time the LED load 12 lights controlled by PWM control, is lower than the predetermined value, the lighting control of the LED load 12 by the crest value control. 外部調光信号は、例えば調光操作卓から出力される。 External dimming signal is output from, for example, dimming console.

以上の説明では、入力回路11から入力される電源がサイリスタで位相制御した調光信号成分を含んだ電源である場合について説明したが、入力回路11から入力される電源が商用電源である場合にも同様に適用できる。 When in the above description, although the power input from the input circuit 11 has been described for the case where a power source including a phase control dimmer signal components thyristors, power inputted from the input circuit 11 is a commercial power supply It can be similarly applied. この場合、切替回路24で調光ボリューム23または調光卓からの外部調光信号のいずれかを選択して調光制御することになる。 In this case, the control by selecting dimming one of the external dimming signal from the light control knob 23 or dimming console by switching circuit 24.

第2の実施の形態によれば、第1の実施の形態の効果に加え、切替回路24により調光信号を切り替えることができるので、必要に応じて適切な場所から調光制御ができる。 According to the second embodiment, in addition to the effect of the first embodiment, it is possible to switch between more dimming signal to the switching circuit 24, it is dimming control from the appropriate location as required. また、入力回路11から入力される電源が商用電源である場合であっても調光制御が可能となる。 The power input from the input circuit 11 becomes possible even light control even when a commercial power source.

本発明の第1の実施の形態に係わるLED式照明装置の構成図。 Diagram of LED type lighting apparatus according to a first embodiment of the present invention. 本発明の第1の実施の形態における点灯制御回路で点灯制御されたLED負荷の発光波形の一例を示す発光波形図。 Emission waveform diagram showing an example of the light emission waveform of the first lighting controlled LED load lighting control circuit in the embodiment of the present invention. 本発明の第1の実施の形態に係わるLED式照明装置の構成図。 Diagram of LED type lighting apparatus according to a first embodiment of the present invention.

符号の説明 DESCRIPTION OF SYMBOLS

11…入力回路、12…LED負荷、13…整流回路、14…力率改善回路、15…平滑回路、16…定電圧回路、17…入力検出回路、18…点灯制御回路、19…ドライブ回路、20…判定部、21…PWM制御部、22…波高値制御部、23…調光ボリューム、24…切替回路 11 ... input circuit, 12 ... LED load, 13 ... rectifying circuit, 14 ... power factor correction circuit, 15 ... smoothing circuit, 16 ... constant voltage circuit, 17 ... input detection circuit, 18 ... lighting control circuit, 19 ... drive circuit, 20 ... judging unit, 21 ... PWM control part, 22 ... crest value control unit, 23 ... light control knob, 24 ... switching circuit

Claims (2)

  1. LEDを点灯するための電源を入力する入力回路と; An input circuit for inputting a power supply for lighting the LED;
    前記入力回路から入力される電源の力率を改善する力率改善回路と; A power factor improvement circuit for improving the power factor of the power inputted from the input circuit;
    前記力率改善回路の出力からLEDに供給する電流を得るための定電圧回路と; A constant voltage circuit for obtaining the current supplied to the LED from the output of the power factor correction circuit;
    前記入力回路に入力される電源に含まれた調光信号成分を識別する入力検出回路と; An input detection circuit for identifying the dimming signal component included in the power input to the input circuit;
    前記入力検出回路で識別した調光信号成分に基づいて調光比を判定し、調光比が所定値より高いときはPWM制御により前記LEDを点灯制御し所定値より低いときは波高値制御により前記LEDを点灯制御する点灯制御回路と; Wherein determining the dimming ratio based on the input detection circuit to the dimming signal component identified by peak value control when the dimming ratio is is higher than the predetermined value is lower than a predetermined value and lighting control the LED by the PWM control a lighting control circuit that controls lighting of the LED;
    を備えたことを特徴とするLED式照明装置。 LED type lighting device characterized by comprising a.
  2. LEDを点灯するための電源を入力する入力回路と; An input circuit for inputting a power supply for lighting the LED;
    前記入力回路から入力される電源の力率を改善する力率改善回路と; A power factor improvement circuit for improving the power factor of the power inputted from the input circuit;
    前記力率改善回路の出力からLEDに供給する電流を得るための定電圧回路と; A constant voltage circuit for obtaining the current supplied to the LED from the output of the power factor correction circuit;
    前記入力回路に入力される電源に含まれた調光信号成分を識別する入力検出回路と; An input detection circuit for identifying the dimming signal component included in the power input to the input circuit;
    前記入力検出回路で識別された調光信号成分、外部調光信号、調光ボリュームからの調光信号を切り替える切替回路と; Identified dimming signal component in the input detection circuit, an external dimming signal, and a switching circuit for switching the dimming signal from the light control knob;
    前記切替回路からの出力信号に基づいて調光比を判定し、調光比が所定値より高いときはPWM制御により前記LEDを点灯制御し所定値より低いときは波高値制御により前記LEDを点灯制御する点灯制御回路と; Determines dimming ratio based on the output signal from the switching circuit, adjustment when the optical ratio is lower than a predetermined value and lighting control the LED by the PWM control is higher than the predetermined value lighting the LED with peak value control a lighting control circuit for controlling;
    を備えたことを特徴とするLED式照明装置。 LED type lighting device characterized by comprising a.
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JP2007234415A (en) * 2006-03-01 2007-09-13 Matsushita Electric Works Ltd Power supply circuit for lighting, and luminaire
JP2008210537A (en) * 2007-02-23 2008-09-11 Matsushita Electric Works Ltd Dimmer device, and illumination fixture using it
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Families Citing this family (2)

* Cited by examiner, † Cited by third party
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Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0313695U (en) * 1989-06-24 1991-02-12
JPH1167471A (en) * 1997-08-26 1999-03-09 Tec Corp Lighting system
JP2002199708A (en) * 2000-12-22 2002-07-12 Hitachi Ltd Dc-dc converter
WO2003055273A2 (en) * 2001-12-19 2003-07-03 Color Kinetics Incorporated Controlled lighting methods and apparatus
JP2003243713A (en) * 2002-02-19 2003-08-29 Keyence Corp Power supply apparatus for led illumination

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0313695U (en) * 1989-06-24 1991-02-12
JPH1167471A (en) * 1997-08-26 1999-03-09 Tec Corp Lighting system
JP2002199708A (en) * 2000-12-22 2002-07-12 Hitachi Ltd Dc-dc converter
WO2003055273A2 (en) * 2001-12-19 2003-07-03 Color Kinetics Incorporated Controlled lighting methods and apparatus
JP2003243713A (en) * 2002-02-19 2003-08-29 Keyence Corp Power supply apparatus for led illumination

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