JP2014238947A5

JP2014238947A5 -

Info

Publication number: JP2014238947A5
Application number: JP2013120179A
Authority: JP
Filing date: 2013-06-06
Publication date: 2016-11-04
Anticipated expiration: 2033-06-06

Description

本発明にかかる調光器は、
交流電源と点灯装置との間に介在する位相制御型の調光器であって、
前記点灯装置は、発光素子と接続し前記調光器の出力する電圧から生成した電流を前記発光素子に供給する点灯回路を含み、
前記調光器は、
前記交流電源の電圧波形を成形するトライアックと、
前記トライアックの出力する電圧が所定値以下であるときに、出力電流を前記点灯回路からバイパスさせて前記トライアックの電流を保持するバイパス回路と、
を備え、
前記バイパス回路は、
前記トライアックが出力する電流を前記点灯回路からバイパスする電流経路と、前記電流経路に直列接続されたスイッチング素子と、を備えるバイパス回路本体部と、
前記スイッチング素子の制御端子に電圧を供給するコンデンサを備え、前記トライアックから出力される電圧の１周期が有するオフ期間以上の期間だけ前記スイッチング素子のオンを継続可能な量の電荷を前記コンデンサに蓄えるバイパス駆動電源回路と、
前記トライアックから出力される電圧が所定値以下か否かを検出して前記コンデンサと前記制御端子の接続を切り替える電圧検出回路と、
を含むことを特徴とする。
The dimmer according to the present invention is:
A phase control type dimmer interposed between the AC power source and the lighting device,
The lighting device, a current generated from the output to the voltage of the previous SL dimmer connected to a light emitting device includes a lighting circuit for supplying to the light emitting element,
The dimmer is
A triac for shaping a voltage waveform of the AC power supply;
A bypass circuit for holding the current of the triac by bypassing an output current from the lighting circuit when the voltage output by the triac is a predetermined value or less;
With
The bypass circuit is:
A bypass circuit body comprising a current path for bypassing the current output from the triac from the lighting circuit, and a switching element connected in series to the current path;
A capacitor for supplying a voltage to the control terminal of the switching element, and storing in the capacitor an amount of charge that can continue to turn on the switching element for a period equal to or longer than an off period of one period of the voltage output from the triac; A bypass drive power supply circuit;
A voltage detection circuit that detects whether a voltage output from the triac is equal to or lower than a predetermined value and switches the connection between the capacitor and the control terminal;
It is characterized by including.

Claims

A lighting device that can be connected to a phase control dimmer and receives an input voltage phase-controlled by the dimmer,
An input terminal connected to the dimmer;
A lighting circuit connected to the light emitting element and supplying a current generated by the input voltage to the light emitting element;
Intervening between the input terminal and the lighting circuit, and when the input voltage is below a predetermined value, the output of the dimmer is bypassed from the lighting circuit and the current output by the dimmer is held A bypass circuit to
With
The bypass circuit is:
A bypass circuit body comprising a current path for bypassing the current output from the dimmer from the lighting circuit, and a switching element connected in series to the current path;
A capacitor for supplying a voltage to the control terminal of the switching element; A bypass drive power supply circuit storing in the capacitor;
A voltage detection circuit that detects whether the input voltage is less than or equal to the predetermined value and switches the connection between the capacitor and the control terminal;
The lighting device characterized by including.

A first rectifier circuit that rectifies an AC voltage from the input terminal and supplies the AC voltage to the lighting circuit without passing through the bypass circuit main body;
A second rectifier circuit that rectifies an alternating voltage from the input terminal and supplies the rectified voltage to the bypass circuit main body;
The lighting device according to claim 1, further comprising:

A rectifying element having an input side connected to one end of the current path and an output side connected to the bypass drive power supply circuit,
The voltage detection circuit detects a voltage on the output side of the rectifying element,
The bypass drive power supply circuit charges the capacitor when the voltage detected by the voltage detection circuit exceeds a predetermined voltage, and sets the charge voltage of the capacitor when the voltage detected by the voltage detection circuit is equal to or lower than a predetermined voltage. The lighting device according to claim 1, wherein the lighting device is provided to the control terminal.

The bypass circuit maintains the switching element on for a period from when the output voltage of the dimmer becomes equal to or lower than the predetermined value until the output voltage of the dimmer rises next time. The lighting device according to any one of claims 1 to 3.

A phase control type dimmer interposed between the AC power source and the lighting device,
The lighting device, a current generated from the output to the voltage of the previous SL dimmer connected to a light emitting device includes a lighting circuit for supplying to the light emitting element,
The dimmer is
A triac for shaping a voltage waveform of the AC power supply;
A bypass circuit for holding the current of the triac by bypassing an output current from the lighting circuit when the voltage output by the triac is a predetermined value or less;
With
The bypass circuit is:
A bypass circuit body comprising a current path for bypassing the current output from the triac from the lighting circuit, and a switching element connected in series to the current path;
A capacitor for supplying a voltage to the control terminal of the switching element, and storing in the capacitor an amount of charge that can continue to turn on the switching element for a period equal to or longer than an off period of one period of the voltage output from the triac; A bypass drive power supply circuit;
A voltage detection circuit that detects whether a voltage output from the triac is equal to or lower than a predetermined value and switches the connection between the capacitor and the control terminal;
A dimmer characterized by comprising:

The bypass circuit maintains the switching element on for a period from when the output voltage of the dimmer becomes equal to or lower than the predetermined value until the output voltage of the dimmer rises next time. The dimmer according to claim 5.

A light emitting element that emits light upon receiving an electric current;
A phase control dimmer;
A lighting device comprising: an input terminal connected to the dimmer; and a lighting circuit that supplies a current generated from an input voltage phase-controlled by the dimmer to the light emitting element;
When the input voltage is less than or equal to a predetermined value, the current output from the dimmer is bypassed from the lighting circuit when the input voltage is below a predetermined value. A bypass circuit to hold,
With
The bypass circuit is:
A bypass circuit body comprising a current path for bypassing the current output from the dimmer from the lighting circuit, and a switching element connected in series to the current path;
A capacitor for supplying a voltage to the control terminal of the switching element; A bypass drive power supply circuit storing in the capacitor;
A voltage detection circuit that detects whether the input voltage is less than or equal to the predetermined value and switches the connection between the capacitor and the control terminal;
A lighting device comprising: