JP2011146263A - Light-emitting diode illumination device and light-emitting diode illumination system - Google Patents

Light-emitting diode illumination device and light-emitting diode illumination system Download PDF

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JP2011146263A
JP2011146263A JP2010006322A JP2010006322A JP2011146263A JP 2011146263 A JP2011146263 A JP 2011146263A JP 2010006322 A JP2010006322 A JP 2010006322A JP 2010006322 A JP2010006322 A JP 2010006322A JP 2011146263 A JP2011146263 A JP 2011146263A
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emitting diode
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holding current
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dimmer
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JP5473058B2 (en
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Hiromitsu Masaki
裕光 正木
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Jimbo Electric Co Ltd
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    • 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
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Abstract

<P>PROBLEM TO BE SOLVED: To provide a light-emitting diode illumination device and a light-emitting diode illumination system which enable controlling light of a plurality of light-emitting diode illumination devices and obviating attachment work to an illumination system in an illumination system controlling light by a conventional dimmer for an incandescent lamp. <P>SOLUTION: A light-emitting diode illumination device 10 includes: a rectifier D1; a holding current maintaining circuit 18; a constant current circuit 20; a holding current limiting circuit 22; and a light-emitting diode load 24. The holding current maintaining circuit 18 receives a voltage output from the rectifier D1 and secures a holding current to maintain the circuit operation of a dimmer 12. Thereby, light adjustment of a plurality of light-emitting diode illumination devices is enabled by utilizing the illumination system using a dimmer for an incandescent lamp as it is. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

本発明は、白熱電球用調光器を用いて調光できる発光ダイオード照明装置及び発光ダイオード照明システムに関するものである。   The present invention relates to a light-emitting diode illuminating device and a light-emitting diode illuminating system that can be dimmed using a dimmer for an incandescent bulb.

ホテルの客室、飲食店、リビングルームなどには、各施設等に用途に応じて白熱電球の明るさを調整できる調光器が備えられている。白熱電球の調光器は広く普及している。
一方、近年、環境問題に対応するため石油・電力・ガスなどのエネルギーを効率的に使用しその消費量を節約できる省エネルギーの製品が開発研究されている。電球においては、白熱電球に代わって発光ダイオード照明装置（以下、発光ダイオードをＬＥＤと略す。）の開発が行われている。 Hotel rooms, restaurants, living rooms, and the like are equipped with dimmers that can adjust the brightness of incandescent light bulbs according to their use. Incandescent bulb dimmers are widely used.
On the other hand, in recent years, energy-saving products that can efficiently use energy such as oil, electric power, and gas to save the consumption amount have been developed and studied in order to cope with environmental problems. In light bulbs, light-emitting diode illuminating devices (hereinafter, light-emitting diodes are abbreviated as LEDs) have been developed in place of incandescent light bulbs.

しかし、従来の白熱電球用調光器は、二線式位相制御方式調光器であり、ＬＥＤ照明装置を調光することができない。そのため、白熱電球用調光器を用いてＬＥＤ照明装置を滑らかに調光できるようにしたＬＥＤランプ調光用アダプタ装置が提供されている（特許文献１）。   However, the conventional dimmer for an incandescent bulb is a two-wire phase control type dimmer, and cannot dimm the LED lighting device. For this reason, there is provided an LED lamp dimming adapter device capable of smoothly dimming the LED lighting device using an incandescent bulb dimmer (Patent Document 1).

特開２００６−３１９１７２号公報JP 2006-319172 A

ＬＥＤは、印加電圧がある電圧（順方向電圧）に達したときから電流を流し始め、印加電圧が低いときは電流を殆んど流さない。そのため、印加電圧が低いときは、白熱電球用調光器の回路網にも電流が流れず、調光回路は機能しない。また、回路網にある程度の電流が流れ、回路が動作を開始し、主要部品であるトライアック（ＴＲＩＡＣ、双方向サイリスタ）のゲートに位相制御によるトリガパルスを与えたとしても、Ｔ２−Ｔ１間に規定の保持電流以上を流さなければならず、ＬＥＤ照明装置（ＬＥＤランプ）を調光できなかった。
特許文献１のＬＥＤランプ調光用アダプタ装置は、白熱電球用調光器に保持電流を供給する電流保持手段を備えるものである。調光器とＬＥＤ負荷とからなる点灯回路に前記アダプタ装置を並列に取り付けることによって、調光器のトライアックの保持電流を流すことができる。 The LED starts to flow current when the applied voltage reaches a certain voltage (forward voltage), and hardly flows current when the applied voltage is low. For this reason, when the applied voltage is low, no current flows through the circuit network of the dimming lamp for incandescent bulbs, and the dimming circuit does not function. Further, even if a certain amount of current flows through the circuit network, the circuit starts to operate, and a trigger pulse by phase control is applied to the gate of the main component, TRIAC (TRIAC, bidirectional thyristor), the interval between T 2 and T 1 Therefore, the LED lighting device (LED lamp) could not be dimmed.
The LED lamp dimming adapter device of Patent Document 1 includes current holding means for supplying a holding current to a dimming device for an incandescent bulb. By attaching the adapter device in parallel to a lighting circuit composed of a dimmer and an LED load, the holding current of the triac of the dimmer can be passed.

電流保持手段は、調光器のトライアックに保持電流を供給する定電流回路と、所定の電圧を検出して定電流回路を制御する電圧検出回路を備える。特許文献１のアダプタ装置では、電圧検出回路が、ＬＥＤ負荷が点灯して十分にトライアックの保持電流を流せる電圧を検知する。当該電圧を検知できない場合に定電流回路をオンして、トライアックに保持電流を供給するようにしている。これにより、白熱電球用調光器を用いた照明システム（ＬＥＤ点灯回路）において、ＬＥＤ照明装置の調光が可能となる。   The current holding unit includes a constant current circuit that supplies a holding current to the triac of the dimmer, and a voltage detection circuit that detects the predetermined voltage and controls the constant current circuit. In the adapter device of Patent Document 1, the voltage detection circuit detects a voltage at which the LED load is lit and a sufficient triac holding current can flow. When the voltage cannot be detected, the constant current circuit is turned on to supply the holding current to the triac. Thereby, in the illumination system (LED lighting circuit) using the dimmer for the incandescent bulb, the dimming of the LED illumination device can be performed.

しかし、特許文献１のＬＥＤランプ調光用アダプタ装置は、従来の白熱電球用調光器によって調光する照明システムに新たに取り付ける必要があり、また、その取付工事を専門家に依頼した場合別途費用が発生し、経済的負担がかかるものであった。   However, the LED lamp dimming adapter device of Patent Document 1 needs to be newly attached to a lighting system that is dimmed by a conventional dimming device for incandescent bulbs. Expenses were incurred and an economic burden.

本発明は、従来の白熱電球用調光器によって調光する照明システムにおいてＬＥＤ照明装置の調光を可能にし、かつ、照明システムへの取付工事が不要な発光ダイオード照明装置及び発光ダイオード照明システムを提供することを目的とするものである。   The present invention provides a light-emitting diode illuminating device and a light-emitting diode illuminating system that enable dimming of an LED illuminating device in a lighting system that is dimmed by a conventional dimmer for an incandescent light bulb and that does not require installation work to the lighting system. It is intended to provide.

本発明の発光ダイオード照明装置は、２線式位相制御方式調光器から出力される位相制御電圧を受けて前記調光器に保持電流を供給する保持電流維持回路と、保持電流以上の発光ダイオード負荷電流を検知して前記保持電流維持回路の保持電流の供給を遮断する保持電流制限回路を発光ダイオード照明装置の点灯回路に並列に設けるようにしたものである。
また、本発明は、前記発光ダイオード照明装置の定電流回路と前記保持電流制限回路において前記発光ダイオード負荷電流を検知する判断抵抗を共有したものである。 The light-emitting diode illuminating device of the present invention includes a holding current maintaining circuit that receives a phase control voltage output from a two-wire phase control dimmer and supplies a holding current to the dimmer, and a light-emitting diode that has a holding current or higher A holding current limiting circuit that detects a load current and interrupts the supply of the holding current of the holding current maintaining circuit is provided in parallel to the lighting circuit of the light emitting diode lighting device.
In the present invention, the constant current circuit of the light emitting diode lighting device and the holding current limiting circuit share a judgment resistor for detecting the light emitting diode load current.

本発明の発光ダイオード照明システムは、２線式位相制御方式の調光器を用いて調光する照明システムにおいて、前記照明システムの電源ラインに本発明の発光ダイオード照明装置を直列に接続し、当該発光ダイオード照明装置と当該発光ダイオード照明装置の保持電流維持回路及び保持電流制限回路がない発光ダイオード照明装置を並列に接続するようにしたものである。   The light-emitting diode illumination system of the present invention is a lighting system that performs dimming using a two-wire phase control dimmer. The light-emitting diode illumination device of the present invention is connected in series to a power line of the illumination system, A light emitting diode illuminating device and a light emitting diode illuminating device without a holding current maintaining circuit and a holding current limiting circuit of the light emitting diode illuminating device are connected in parallel.

本発明のＬＥＤ照明装置は、白熱電球用調光器に保持電流を供給するものである。これにより、従来の白熱電球用調光器を用いた照明システムをそのまま利用してＬＥＤ照明装置を調光することができる。従って、新たな調光用機器の設置が不要であり、ＬＥＤ照明装置の調光に要する設置コストを削減できる。
また、従来の照明システムに使用する複数個のＬＥＤ照明装置に、本発明のＬＥＤ照明装置を１個加えることにより、すべてのＬＥＤ照明装置を滑らかに調光することができる。これにより、すべてのＬＥＤ照明装置に高価格の調光器対応のＬＥＤ照明装置を使用する必要がなく、ＬＥＤ照明装置購入に要する費用も軽減できる。
一方、本発明のＬＥＤ照明装置は、負荷電流検出方式であるため、保持電流維持回路に流れる電流とＬＥＤ照明装置に流れる電流を加算した電流が保持電流以上流れると電圧に関係なく保持電流を遮断することから、ＬＥＤ負荷が大きくなっても保持電流を最小限に保つことができるため、省エネルギーのＬＥＤ照明装置を提供することができる。 The LED lighting device of the present invention supplies a holding current to a dimmer for an incandescent bulb. Thereby, the LED illumination apparatus can be dimmed using the illumination system using the conventional dimmer for incandescent bulbs as it is. Therefore, it is not necessary to install a new dimming device, and the installation cost required for dimming the LED lighting device can be reduced.
Further, by adding one LED lighting device of the present invention to a plurality of LED lighting devices used in a conventional lighting system, all the LED lighting devices can be dimmed smoothly. Thereby, it is not necessary to use a high-price dimmable LED lighting device for all LED lighting devices, and the cost required for purchasing the LED lighting device can be reduced.
On the other hand, since the LED lighting device of the present invention is a load current detection method, if the current that is the sum of the current flowing through the holding current maintaining circuit and the current flowing through the LED lighting device exceeds the holding current, the holding current is cut off regardless of the voltage. Therefore, since the holding current can be kept to a minimum even when the LED load increases, an energy-saving LED lighting device can be provided.

本発明のＬＥＤ照明装置の点灯回路を表わす図である。It is a figure showing the lighting circuit of the LED lighting apparatus of this invention. 本発明のＬＥＤ照明装置の調光時の電流を表わす波形図である。It is a wave form diagram showing the electric current at the time of light control of the LED lighting apparatus of this invention. 本発明のＬＥＤ照明装置を使用するＬＥＤ照明システムを表わす図である。It is a figure showing the LED lighting system which uses the LED lighting apparatus of this invention. 調光器非対応のＬＥＤ照明装置の点灯回路例を表わす図である。It is a figure showing the example of a lighting circuit of the LED lighting apparatus non-corresponding to a dimmer. 図３の照明システムのＬＥＤ照明装置の点灯回路を表わす図である。It is a figure showing the lighting circuit of the LED lighting apparatus of the illumination system of FIG.

本発明は、従来の白熱電球用調光器を使用する照明システムにおいてＬＥＤ照明装置を調光することを実現するものである。   This invention implement | achieves dimming an LED lighting apparatus in the illumination system which uses the conventional dimmer for incandescent lamps.

本発明のＬＥＤ照明装置を図に基づいて説明する。図１は、本発明のＬＥＤ照明装置の点灯回路を表わす図である。図２は、本発明のＬＥＤ照明装置の調光時の電流を表わす波形図であり、同図（ａ）、（ｂ）、（ｃ）はそれぞれ導通角４５度、８０度、１３５度の電流波形を表わし、同図（ａ）、（ｂ）、（ｃ）上段（チャンネルＣＨ１）は保持電流維持回路が調光器に供給する保持電流波形を表し、同下段（チャンネルＣＨ２）はＬＥＤ照明装置のＬＥＤアレイに掛かる電圧を表わすものである。図３は、本発明のＬＥＤ照明装置を使用するＬＥＤ照明システムを表わす図である。図４は、調光器非対応のＬＥＤ照明装置の点灯回路例を表わす図である。図５は、図３の照明システムのＬＥＤ照明装置の点灯回路を表わす図である。
本発明のＬＥＤ照明装置１０は、白熱電球用調光器である２線式位相制御方式の調光器１２（図３、図５）によって調光可能なＬＥＤ照明装置である。本発明のＬＥＤ照明装置１０は、ＬＥＤ照明システム１６の点灯回路に交流電源１４と調光器１２に直列に接続されるものである（図５）。 The LED lighting device of the present invention will be described with reference to the drawings. FIG. 1 is a diagram showing a lighting circuit of the LED lighting device of the present invention. FIG. 2 is a waveform diagram showing the current during dimming of the LED lighting device of the present invention. FIGS. 2A, 2B, and 2C show currents with conduction angles of 45 degrees, 80 degrees, and 135 degrees, respectively. (A), (b), (c) upper stage (channel CH1) represents a holding current waveform supplied to the dimmer by the holding current maintaining circuit, and the lower stage (channel CH2) represents the LED illumination device. Represents the voltage applied to the LED array. FIG. 3 is a diagram showing an LED lighting system using the LED lighting device of the present invention. FIG. 4 is a diagram illustrating an example of a lighting circuit of an LED lighting device that does not support a dimmer. FIG. 5 is a diagram illustrating a lighting circuit of the LED lighting device of the lighting system of FIG. 3.
The LED illumination device 10 of the present invention is an LED illumination device that can be dimmed by a two-wire phase control type dimmer 12 (FIGS. 3 and 5) that is a dimmer for an incandescent bulb. The LED lighting device 10 of the present invention is connected to the lighting circuit of the LED lighting system 16 in series with the AC power source 14 and the dimmer 12 (FIG. 5).

図１のＬＥＤ照明装置１０の点灯回路は、整流器Ｄ１と、保持電流維持回路１８と、定電流回路２０と、保持電流制限回路２２と、ＬＥＤ負荷（ＬＥＤアレイ）２４とを有するものである。保持電流維持回路１８と保持電流制限回路２２は、整流器Ｄ１とＬＥＤ負荷２４を直列接続した点灯回路に並列に接続され、定電流回路２０は直列に接続されている。
整流器Ｄ１は、調光器１２から出力される位相制御電圧を全波整流する全波整流用ブリッジダイオードである。 The lighting circuit of the LED lighting device 10 in FIG. 1 includes a rectifier D1, a holding current maintaining circuit 18, a constant current circuit 20, a holding current limiting circuit 22, and an LED load (LED array) 24. The holding current maintaining circuit 18 and the holding current limiting circuit 22 are connected in parallel to the lighting circuit in which the rectifier D1 and the LED load 24 are connected in series, and the constant current circuit 20 is connected in series.
The rectifier D <b> 1 is a full-wave rectification bridge diode that performs full-wave rectification on the phase control voltage output from the dimmer 12.

調光器１２は、交流電源１４の電圧の位相角を任意に設定することができる。その設定された電源電圧の位相角でトライアック（位相制御素子）２６を作動して調光制御する。トライアックは交流電源１４に接続されており、トライアック２６はゲートにトリガー信号が入るとオンし、一定の保持電流が流れている間はオン状態を維持して作動する。保持電流がなくなればオフし、作動を停止する。調光器１２から出力される位相制御電圧は、高周波阻止フィルタ（コンデンサ）Ｃ２を介して整流器Ｄ１に入力される。この整流器Ｄ１の出力電圧は、全波整流電圧に変換され、ＬＥＤ照明装置１０の点灯回路の出力は、位相制御電圧の導通角に応じて変化する。ＬＥＤ照明装置１０のＬＥＤ負荷は、調光器１２によって位相制御された交流電圧の位相角に応じて調光点灯する。   The dimmer 12 can arbitrarily set the phase angle of the voltage of the AC power supply 14. The TRIAC (phase control element) 26 is operated at the set phase angle of the power supply voltage to perform dimming control. The triac is connected to the AC power supply 14, and the triac 26 is turned on when a trigger signal is input to the gate, and operates while maintaining an on state while a certain holding current flows. When the holding current is gone, it turns off and stops operating. The phase control voltage output from the dimmer 12 is input to the rectifier D1 through the high frequency blocking filter (capacitor) C2. The output voltage of the rectifier D1 is converted into a full-wave rectified voltage, and the output of the lighting circuit of the LED lighting device 10 changes according to the conduction angle of the phase control voltage. The LED load of the LED lighting device 10 is dimmed according to the phase angle of the AC voltage phase-controlled by the dimmer 12.

保持電流維持回路１８は、スイッチング素子（ＭＯＳＦＥＴ）Ｑ３、抵抗Ｒ６，Ｒ７およびツェナーダイオードＺＤ１で構成される。整流器Ｄ１の出力電圧がスイッチング素子Ｑ３のオン条件に達すると、スイッチング素子Ｑ３のドレイン−ソース間および抵抗Ｒ６を保持電流Ｉ１が流れる。この保持電流Ｉ１とＬＥＤアレイ２４に流れる負荷電流Ｉ２を加算した電流がトライアック２６の保持電流Ｉとなる（図１、図２）。
抵抗Ｒ７はスイッチング素子Ｑ３をオンさせる抵抗であり、ツェナーダイオードＺＤ１はスイッチング素子Ｑ３のゲート電圧を保護するためのものである。抵抗Ｒ８はスイッチング素子Ｑ３のゲート電圧を設定する抵抗である。 The holding current maintaining circuit 18 includes a switching element (MOSFET) Q3, resistors R6 and R7, and a Zener diode ZD1. When the output voltage of the rectifier D1 reaches the ON condition of the switching element Q3, the drain of the switching element Q3 - holding current I 1 flows source and the resistor R6. Load current a current obtained by adding the I 2 flowing through the holding current I 1 and the LED array 24 becomes holding current I of the triac 26 (FIG. 1, FIG. 2).
The resistor R7 is a resistor that turns on the switching element Q3, and the Zener diode ZD1 is for protecting the gate voltage of the switching element Q3. The resistor R8 is a resistor that sets the gate voltage of the switching element Q3.

定電流回路２０は、スイッチング素子（ＭＯＳＦＥＴ）Ｑ２、抵抗Ｒ４，Ｒ５、ＮＰＮトランジスタＱ１およびコンデンサＣ１で構成されている。ＬＥＤ負荷２４の負荷電流Ｉ２がスイッチング素子Ｑ２、抵抗Ｒ４を介して流れたときに発生する抵抗Ｒ４の両端電圧が所定の電圧（０．６Ｖ）に達すると、ＮＰＮトランジスタＱ１のコレクタ−エミッタ間がオンし、スイッチング素子Ｑ２のゲート電圧が引き下がるため、スイッチング素子Ｑ２はオフ状態となり、負荷電流Ｉ２を一定電流に制限する。
抵抗Ｒ５は、スイッチング素子Ｑ２をオンさせる抵抗である。 The constant current circuit 20 includes a switching element (MOSFET) Q2, resistors R4 and R5, an NPN transistor Q1, and a capacitor C1. Load current I 2 the switching element Q2 of the LED load 24, the voltage across the resistor R4 which is generated when flowing through the resistor R4 reaches a predetermined voltage (0.6V), the collector of the NPN transistor Q1 - emitter There was one, the gate voltage of the switching element Q2 back down, the switching element Q2 is turned off, limiting the load current I 2 to the constant current.
The resistor R5 is a resistor that turns on the switching element Q2.

保持電流制限回路２２は、ＮＰＮトランジスタＱ４、抵抗Ｒ３，Ｒ４，Ｒ９で構成されている。ＬＥＤ負荷２４の負荷電流Ｉ２が抵抗Ｒ３，Ｒ４を通じて流れたときに発生する抵抗Ｒ３，Ｒ４の合成抵抗の両端電圧が所定の電圧（０．６Ｖ）に達すると、ＮＰＮトランジスタＱ４のコレクタ−エミッタ間がオンする。これにより、保持電流維持回路１８のスイッチング素子Ｑ３のゲート電圧が引き下がり、スイッチング素子Ｑ３はオフ状態となり、保持電流Ｉ１を遮断する。
抵抗９は、ＮＰＮトランジスタＱ４のベース電流を設定する抵抗である。 The holding current limiting circuit 22 includes an NPN transistor Q4 and resistors R3, R4, and R9. When the voltage across the combined resistance of resistors R3, R4 which occurs when the load current I 2 of the LED load 24 flows through the resistors R3, R4 reaches a predetermined voltage (0.6V), the collector of the NPN transistor Q4 - emitter The interval turns on. Accordingly, the gate voltage of the switching element Q3 of the holding current maintaining circuit 18 withdraws, the switching element Q3 is turned off to cut off the holding current I 1.
The resistor 9 is a resistor that sets the base current of the NPN transistor Q4.

なお、抵抗Ｒ４は、ＬＥＤ負荷電流Ｉ２を検知する判断抵抗であり、定電流回路２０と保持電流制限回路２２の２つの回路で利用されている。これにより、ＬＥＤ照明装置１０の点灯回路全体の電流制限用抵抗を小さくすることができ、抵抗の発熱による電力消費を抑えられることから、省エネを図ることができる。
また、ＬＥＤ照明装置１０の点灯回路において、抵抗Ｒ１はヒューズ用チップ抵抗である。抵抗Ｒ２はガイドランプ（配線器具内のネオン管）を点灯する抵抗である。ＶＺ１は、雷電圧保護素子である。 The resistor R4 is determined resistance to detect the LED load current I 2, and is available in two circuits of the constant current circuit 20 holds the current limiting circuit 22. Thereby, the current limiting resistance of the entire lighting circuit of the LED lighting device 10 can be reduced, and power consumption due to heat generation of the resistance can be suppressed, so that energy saving can be achieved.
Further, in the lighting circuit of the LED lighting device 10, the resistor R1 is a fuse chip resistor. The resistor R2 is a resistor that lights a guide lamp (neon tube in the wiring device). VZ1 is a lightning voltage protection element.

つぎに、ＬＥＤ照明装置１０の点灯回路の動作を図１及び図２に基づいて説明する。
最初に、調光器を操作して導通角を４５度にし、ＬＥＤ負荷を低照度で点灯する場合について説明する。
整流器Ｄ１の出力電圧がスイッチング素子Ｑ３のオン状態に達すると、スイッチング素子Ｑ３のドレイン−ソース間および抵抗Ｒ６を保持電流Ｉ１が流れる（図２（ａ）ＣＨ１）。他方、ＬＥＤ負荷２４に流れる負荷電流Ｉ２は少なく、ＬＥＤ負荷２４に流れる負荷電流Ｉ２だけでは調光器１２の回路中のトライアック２６のオン状態を維持することはできない。
しかし、保持電流維持回路１８が調光器１２に保持電流Ｉ１を供給することから、調光器１２の回路中のトライアック２６のオン状態を維持することはでき、ＬＥＤ負荷２４に負荷電流Ｉ２を供給することができる。従って、低い電圧での点灯が可能になり、低照度での点灯が可能になる。
なお、導通角４５度における保持電流Ｉ１（図２（ａ）ＣＨ１）の実効値は５．９５Ｖ（Ｐ−Ｐ値１３．０Ｖ）であり、ＬＥＤ照明装置の点灯回路を流れる電流Ｉ（図２（ａ）ＣＨ２）の実効値は５１．７Ｖ（Ｐ―Ｐ値１６０Ｖ）であった。抵抗Ｒ６を１ｋΩとした場合、保持電流確保のために発生する熱損失ＰＤは、ＰＤ＝５．９５ｍＡ×５１．７Ｖｒｍｓ＝０．３７Ｗである。 Next, the operation of the lighting circuit of the LED lighting device 10 will be described with reference to FIGS.
First, the case where the dimmer is operated to set the conduction angle to 45 degrees and the LED load is turned on with low illuminance will be described.
When the output voltage of the rectifier D1 reaches the ON state of the switching element Q3, the drain of the switching element Q3 - source and a resistor R6 holding current I 1 flows (FIG. 2 (a) CH1). On the other hand, the load current I 2 flowing through the LED load 24 is small, and the triac 26 in the circuit of the dimmer 12 cannot be kept on only by the load current I 2 flowing through the LED load 24.
However, since the holding current maintaining circuit 18 supplies the holding current I 1 to the dimmer 12, the ON state of the triac 26 in the circuit of the dimmer 12 can be maintained, and the load current I is supplied to the LED load 24. 2 can be supplied. Therefore, lighting with a low voltage is possible, and lighting with low illuminance is possible.
The effective value of the holding current I 1 (FIG. 2 (a) CH1) at the conduction angle of 45 degrees is 5.95 V (P-P value 13.0 V), and the current I flowing through the lighting circuit of the LED lighting device (FIG. The effective value of 2 (a) CH2) was 51.7 V (PP value 160 V). When the resistance R6 is 1 kΩ, the heat loss PD generated for securing the holding current is PD = 5.95 mA × 51.7 Vrms = 0.37W.

導通角を８０度にすると、整流器Ｄ１の出力電圧がＬＥＤ負荷２４に流れる負荷電流Ｉ２だけで調光器１２の回路動作を維持することができる状態に近づく。このとき、中間点の照度での点灯が可能になる。
また、ＬＥＤ負荷２４を流れる負荷電流Ｉ２が抵抗Ｒ３，Ｒ４の合成抵抗の両端電圧が０．６Ｖに達すると、ＮＰＮトランジスタＱ４のコレクタ−エミッタ間がオンする。これにより、保持電流維持回路１８のスイッチング素子Ｑ３のゲート電圧が引き下がり、スイッチング素子Ｑ３を流れる保持電流Ｉ１は制限され（図２（ｂ）ＣＨ１の制限時間ｔ１）、無駄なエネルギーの消費を抑えることができる。
なお、導通角８０度における保持電流Ｉ１（図２（ｂ）ＣＨ１）の実効値は９．１９Ｖ（Ｐ―Ｐ値１２．６Ｖ）であり、ＬＥＤ照明装置の点灯回路を流れる電流Ｉ（図２（ｂ）ＣＨ２）の実効値は７６．７Ｖ（Ｐ―Ｐ値２１０Ｖ）であった。抵抗Ｒ６を１ｋΩとした場合、保持電流確保のために発生する熱損失ＰＤは、ＰＤ＝９．１９ｍＡ×７６．７Ｖｒｍｓ＝０．７０Ｗである。 When the conduction angle 80 degrees, approaches a state that can output voltage of the rectifier D1 to maintain the circuit operation of the dimmer 12 only the load current I 2 flowing through the LED load 24. At this time, lighting with the illuminance at the intermediate point becomes possible.
Further, the load current I 2 flowing through the LED load 24 is the voltage across the combined resistance of resistors R3, R4 reaches 0.6V, the collector of the NPN transistor Q4 - emitter is turned on. Thus, the gate voltage of the switching element Q3 of the holding current maintaining circuit 18 withdraws, the holding current I 1 flowing through the switching element Q3 is limited (FIG. 2 (b) CH1 time limit t 1), a wasteful energy consumption Can be suppressed.
Note that the effective value of the holding current I 1 (FIG. 2 (b) CH1) at the conduction angle of 80 degrees is 9.19 V (PP value 12.6 V), and the current I flowing through the lighting circuit of the LED lighting device (see FIG. The effective value of 2 (b) CH2) was 76.7V (PP value 210V). When the resistance R6 is 1 kΩ, the heat loss PD generated for securing the holding current is PD = 9.19 mA × 76.7 Vrms = 0.70 W.

導通角を１３５度にすると、ＬＥＤ負荷は高輝度の照度で点灯される。ＬＥＤ負荷２４に流れる負荷電流Ｉ２が調光器１２の保持電流以上になり、負荷電流Ｉ２のみで調光器１２の回路動作を維持できる状態に達する。
また、このとき、ＬＥＤ負荷２４の負荷電流Ｉ２が流れる抵抗Ｒ３，Ｒ４の合成抵抗の両端電圧が０．６Ｖに達すると、ＮＰＮトランジスタＱ４がオンし、保持電流維持回路１８のスイッチング素子Ｑ３はオフとなり、スイッチング素子Ｑ３を流れる保持電流Ｉ１は遮断されることから（図２（ｃ）ＣＨ１の遮断時間ｔ２）、省エネルギーのＬＥＤ照明装置を提供することができる。
なお、導通角１３５度における保持電流Ｉ１（図２（ｃ）ＣＨ１）の実効値は２．８０Ｖ（Ｐ―Ｐ値１３．０Ｖ）であり、ＬＥＤ照明装置の点灯回路を流れる電流Ｉ（図２（ｃ）ＣＨ２）の実効値は９８．６Ｖ（Ｐ―Ｐ値１４２Ｖ）であった。抵抗Ｒ６を１ｋΩとした場合、保持電流確保のために発生する熱損失ＰＤは、ＰＤ＝２．８０ｍＡ×９８．６Ｖｒｍｓ＝０．２７Ｗである。 When the conduction angle is set to 135 degrees, the LED load is lit with high luminance. The load current I 2 flowing through the LED load 24 becomes equal to or higher than the holding current of the dimmer 12, and a state where the circuit operation of the dimmer 12 can be maintained only by the load current I 2 is reached.
At this time, the voltage across the combined resistance of the load current I 2 flows resistors R3, R4 of the LED load 24 reaches 0.6V, NPN transistor Q4 is turned on, the switching element Q3 of the holding current maintaining circuit 18 turned off, (interruption time t 2 in FIG. 2 (c) CH1) since the holding current I 1 flowing through the switching element Q3 is interrupted, it is possible to provide an LED lighting device of energy conservation.
Note that the effective value of the holding current I 1 (FIG. 2 (c) CH1) at the conduction angle of 135 degrees is 2.80 V (P-P value 13.0 V), and the current I flowing through the lighting circuit of the LED lighting device (FIG. The effective value of 2 (c) CH2) was 98.6V (PP value 142V). When the resistance R6 is 1 kΩ, the heat loss PD generated for securing the holding current is PD = 2.80 mA × 98.6 Vrms = 0.27 W.

本発明は、負荷電流検出方式であるためＬＥＤ照明装置１０にトライアック２６の保持電流以上流れると電圧に関係なく保持電流Ｉ１を遮断する。そのため、ＬＥＤ照明装置の負荷を大きくしても保持電流は最小限を保つため省エネ効果は大きい。本発明では、前述したように、調光最小値（低照度）で０．３７Ｗ、中間点の照度で０．７０Ｗ、最大値（高輝度の照度）で０．２７Ｗしか電力を消費しなかった。
また、調光器１２の調整手段（つまみ）を最小にすると、０．２６Ｗの電力しか消費しなかった。これに対し、現在市販されている調光器対応のＬＥＤ照明装置は、調光器１２のつまみを最小にしても保持電流確保のための４０ｍＡ程度の電流が流れ、１Ｗ弱の電力が消費されていた。 The present invention is, to cut off the holding current I 1 regardless of the voltage flows to the LED illumination device 10 or the holding current of the triac 26 for a load current detection method. Therefore, even if the load of the LED lighting device is increased, the holding current is kept to a minimum, so that the energy saving effect is great. In the present invention, as described above, the power consumption is only 0.37 W at the minimum dimming value (low illuminance), 0.70 W at the middle point illuminance, and 0.27 W at the maximum value (high luminance illuminance). .
Further, when the adjusting means (knob) of the dimmer 12 was minimized, only 0.26 W of power was consumed. On the other hand, in the LED lighting device for dimmers currently on the market, even when the knob of the dimmer 12 is minimized, a current of about 40 mA flows to secure a holding current, and a power of less than 1 W is consumed. It was.

つぎに、本発明のＬＥＤ照明装置を利用するＬＥＤ照明システムの実施形態を図３乃至図５に基づいて説明する。
図３は、ＬＥＤ照明装置１０とＬＥＤ照明装置３０の複数のＬＥＤ照明装置が電源ライン２８にそれぞれ直列に接続されているＬＥＤ照明システム１６である。また、各ＬＥＤ照明装置は、それぞれ並列に接続された状態にある。
ＬＥＤ照明装置３０は、ＬＥＤ照明装置１０の保持電流維持回路１８及び保持電流制限回路２２がない、いわゆる調光器非対応のＬＥＤ照明装置である（図４）。従って、ＬＥＤ照明システム１６にＬＥＤ照明装置３０のみを使用する場合、保持電流を確保できないため調光することはできない。なお、図４のＬＥＤ照明装置３０は、整流器Ｄ１とＬＥＤ負荷２４と定電流回路２０を直列接続したものである。整流器Ｄ１とＬＥＤ負荷２４と定電流回路２０は、同じ符号を付した図１の部品と同じであるため、説明を省略する。
なお、図３のＬＥＤ照明装置１０とＬＥＤ照明装置３０は電球型のＬＥＤ照明装置であるが、これに限定されるものではなく、直管や円形の蛍光灯タイプＬＥＤ照明または埋め込み式のダウンライトやスポットライト形状のＬＥＤ照明装置であってもよい。 Next, an embodiment of an LED illumination system using the LED illumination device of the present invention will be described with reference to FIGS.
FIG. 3 shows an LED lighting system 16 in which a plurality of LED lighting devices, that is, the LED lighting device 10 and the LED lighting device 30 are connected in series to a power line 28. Moreover, each LED lighting apparatus is in the state connected in parallel, respectively.
The LED lighting device 30 is an LED lighting device that does not support the so-called dimmer, and does not have the holding current maintaining circuit 18 and the holding current limiting circuit 22 of the LED lighting device 10 (FIG. 4). Therefore, when only the LED lighting device 30 is used for the LED lighting system 16, the holding current cannot be secured, so that the light cannot be adjusted. The LED lighting device 30 in FIG. 4 is obtained by connecting a rectifier D1, an LED load 24, and a constant current circuit 20 in series. The rectifier D1, the LED load 24, and the constant current circuit 20 are the same as the components in FIG.
The LED lighting device 10 and the LED lighting device 30 in FIG. 3 are bulb-type LED lighting devices, but are not limited to this, and are not limited to a straight tube or a circular fluorescent lamp type LED lighting or an embedded downlight. Or a spotlight-shaped LED illumination device.

図５のＬＥＤ照明システム１６の点灯回路において、整流器Ｄ１から電圧が出力されると、ＬＥＤ照明装置１０の保持電流維持回路１８によって、調光器１２に保持電流が供給される。保持電流はＬＥＤ照明装置１０によって確保できることから、ＬＥＤ照明装置３０に対しても負荷電流が流れる。従って、ＬＥＤ照明システム１６において、１個のＬＥＤ照明装置１０を使用することにより、複数の調光器非対応のＬＥＤ照明装置を調光することが可能となる。   In the lighting circuit of the LED lighting system 16 in FIG. 5, when a voltage is output from the rectifier D <b> 1, a holding current is supplied to the dimmer 12 by the holding current maintaining circuit 18 of the LED lighting device 10. Since the holding current can be secured by the LED lighting device 10, a load current flows also to the LED lighting device 30. Therefore, by using one LED illumination device 10 in the LED illumination system 16, it is possible to dim a plurality of LED illumination devices not compatible with the dimmer.

現在市販されている調光器対応のＬＥＤ点灯回路にスイッチング電源を採用しているＬＥＤ照明装置においては、１つの調光器で複数のＬＥＤ照明装置を調光する場合、すべてのＬＥＤ照明装置に保持電流を流す必要がある。しかし、本発明のＬＥＤ照明装置１０と調光器非対応のＬＥＤ照明装置３０とを一緒に使用すれば、１つの調光器ですべてのＬＥＤ照明装置を調光できる。また、すべてＬＥＤ照明装置に保持電流を流す必要はなく、省エネ効果が大きいＬＥＤ照明システムを提供することができる。
さらには、ＬＥＤ照明システム１６は、従来の白熱電球を調光する照明システムの白熱電球を本発明のＬＥＤ照明装置１０と調光器非対応のＬＥＤ照明装置３０に交換するだけの簡単な作業で完成させることができる。 In LED lighting devices that employ a switching power supply for LED lighting circuits that are currently on the market for dimmers, when dimming multiple LED lighting devices with one dimmer, all LED lighting devices It is necessary to pass a holding current. However, if the LED lighting device 10 of the present invention and the LED lighting device 30 that does not support the dimmer are used together, all the LED lighting devices can be dimmed with one dimmer. In addition, it is not necessary to pass a holding current to all LED lighting devices, and an LED lighting system having a large energy saving effect can be provided.
Furthermore, the LED lighting system 16 is a simple operation that simply replaces the incandescent light bulb of the lighting system for dimming the conventional incandescent light bulb with the LED lighting device 10 of the present invention and the LED lighting device 30 that does not support the dimmer. Can be completed.

本明細書中では既築の建物で調光器と組み合わせて使用されている白熱電球を電球型ＬＥＤ照明装置に交換することを主眼に記載したが、本発明の発光ダイオード照明装置及び発光ダイオード照明システムは電球型ＬＥＤ照明装置に限定されるものではなく、直管型・環状蛍光灯やダウンライト灯に置き換わる形状の全ての形状のＬＥＤ照明装置を調光可能に適用できるものである。   In the present specification, the incandescent light bulb used in combination with the dimmer in an existing building has been mainly described as being replaced with a light bulb type LED lighting device. The system is not limited to the bulb-type LED lighting device, and any shape LED lighting device that can be replaced with a straight tube type / annular fluorescent lamp or a downlight lamp can be dimmed.

１０ ＬＥＤ照明装置
１２ 調光器
１６ ＬＥＤ照明システム
１８ 保持電流維持回路
２２ 保持電流制限回路
２８ 電源ライン
３０ 調光器非対応のＬＥＤ照明装置
DESCRIPTION OF SYMBOLS 10 LED lighting device 12 Dimmer 16 LED lighting system 18 Holding current maintenance circuit 22 Holding current limiting circuit 28 Power supply line 30 LED lighting device not corresponding to dimmer

Claims (3)

２線式位相制御方式調光器から出力される位相制御電圧を受けて前記調光器に保持電流を供給する保持電流維持回路と、保持電流以上の発光ダイオード負荷電流を検知して前記保持電流維持回路の保持電流の供給を遮断する保持電流制限回路を発光ダイオード照明装置の点灯回路に並列に設けることを特徴とする発光ダイオード照明装置。 A holding current maintaining circuit for receiving a phase control voltage output from the two-wire phase control dimmer and supplying a holding current to the dimmer; and a light emitting diode load current greater than the holding current to detect the holding current A light-emitting diode illuminating device, wherein a holding current limiting circuit for cutting off the supply of the holding current of the sustaining circuit is provided in parallel with a lighting circuit of the light-emitting diode illuminating device. 前記発光ダイオード照明装置の定電流回路と前記保持電流制限回路において前記発光ダイオード負荷電流を検知する判断抵抗を共有したことを特徴とする請求項１記載の発光ダイオード照明装置。 2. The light-emitting diode illuminating device according to claim 1, wherein the constant-current circuit and the holding current limiting circuit of the light-emitting diode illuminating device share a judgment resistor for detecting the light-emitting diode load current. ２線式位相制御方式の調光器を用いて調光する照明システムにおいて、前記照明システムの電源ラインに請求項１又は請求項２記載の発光ダイオード照明装置を直列に接続し、当該発光ダイオード照明装置と当該発光ダイオード照明装置の保持電流維持回路及び保持電流制限回路がない発光ダイオード照明装置を並列に接続することを特徴とする発光ダイオード照明システム。 In an illumination system that performs dimming using a two-wire phase control type dimmer, the light emitting diode illumination device according to claim 1 or 2 is connected in series to a power supply line of the illumination system, and the light emitting diode illumination A light emitting diode illumination system comprising: a light emitting diode illumination device having no holding current maintaining circuit and no holding current limiting circuit for the light emitting diode illumination device;
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JP2013037971A (en) * 2011-08-10 2013-02-21 Iwasaki Electric Co Ltd Led lighting device and led lamp
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JP2013037971A (en) * 2011-08-10 2013-02-21 Iwasaki Electric Co Ltd Led lighting device and led lamp
JP2014528140A (en) * 2011-09-06 2014-10-23 コーニンクレッカ フィリップス エヌ ヴェ Power control unit, method for controlling power provided to a load, in particular an LED unit, and voltage control unit for controlling the output voltage of a converter unit
JP2013084469A (en) * 2011-10-11 2013-05-09 Rohm Co Ltd Power supply module, led lighting unit, led lighting apparatus, and led illumination system
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JP2015506552A (en) * 2011-12-29 2015-03-02 ソウル セミコンダクター カンパニー リミテッド LED light emitting device
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JP2013145662A (en) * 2012-01-13 2013-07-25 Rohm Co Ltd Led illumination system
JP2014532255A (en) * 2012-08-06 2014-12-04 メルロー ラボラトリーズ インク Dimming system for lighting device using light emitting element
JP2016164983A (en) * 2015-03-02 2016-09-08 晶元光電股▲ふん▼有限公司 Led drive and associated lighting system
USRE48798E1 (en) 2015-03-02 2021-10-26 Epistar Corporation LED driver and illumination system related to the same
CN106782345A (en) * 2016-12-27 2017-05-31 北京太坦科技有限公司 A kind of screen luminance of mobile phone control device
JP2018107100A (en) * 2016-12-27 2018-07-05 北京太坦科技有限公司 Screen luminance control device for mobile phone
JP2018107101A (en) * 2016-12-27 2018-07-05 北京太坦科技有限公司 Screen luminance control device for mobile phone
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