Led lighting device and illumination apparatus

Abstract

The invention relates to an LED lighting device and a lighting device. The LED lighting device includes: a pair of input terminals, which input AC voltage whose phase is controlled by a dimmer, and the dimmer controls the phase of the AC voltage of the AC power supply; a damping circuit, including resistors, AC power and dimming A resistor and a capacitor and an inductor forming a closed circuit are inserted in series to a position where an input current flows from the AC power source through the dimmer, and when the phase control element of the dimmer is turned on, the resistor in the dimmer is suppressed. generated high-frequency vibration; and an LED lighting circuit that rectifies the phase-controlled AC voltage input through a pair of input terminals, converts the rectified DC output voltage so that the DC output voltage is suitable for the load, and Turn on the LED. The lighting device includes: a lighting device body, the above-mentioned LED lighting device and LEDs.

Description

Technical field [0001] The present invention relates to an LED lighting device and a lighting device in the field of lighting technology, and in particular to a dimmable light emitting diode (LED) lighting device and a lighting device including the LED lighting device. Background technique [0002] A two-wire phase control type dimmer using a phase control element such as a bidirectional switching triode (triac) is widely used as a dimmer for incandescent bulbs. Therefore, if the dimmer can be used to dim the LED, there is no need to replace the existing equipment or wiring, only the light source is replaced, and a low power consumption dimming corresponding lighting system (system) can be realized. , So it is very convenient, but in fact there are the following problems. [0003] (1) When the LED is lit at a low current level, the self-holding current of the phase control element of the dimmer cannot be secured, and therefore, the brightness of the LED flickers. That is, when th...

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Problems solved by technology

[0003] (1) When the LED is lit at a low current level (level), the self-holding current of the phase control element of the dimmer cannot be ensured, so the brightness of the LED will flicker

That is, when the LED is turned on with the same luminance, the current flowing through the LED is smaller than the current flowing through the incandescent bulb. Therefore, the current flowing through the LED cannot ensure the self-holding current of the necessary phase control element.

[0004] (2) In order to turn on the phase control element with the expected phase, the dimmer includes a timer circuit (timer circuit) composed of a time constant circuit, but it cannot start from the moment the AC power is turned on, Supply the timing circuit operating current for operating the timing circuit to the dimmer

It is known that there is a problem that if the high-frequency vibration is a negative current for a short period of time, and the current peak value (peak value) is higher than the inherent arc-extinguishing current of the phase control element, it will not turn off (turn off)

Although the resistance value of the damping resistor is determined according to the resonance frequency of the resonance circuit or the power supply voltage, the greater the power consumption of the damping resistor, the greater the effect

However, since the damping resistor is connected in series to the power supply line (line), the damping resistor always consumes power during energization. Therefore, considering the restriction on heat generation or power consumption of the damping resistor, The resistance value used in the design is limited, and as a result, the damping effect on the high-frequency vibration when the phase control element is turned on is not sufficient.

[0008] This shows that the above-mentioned existing LED lighting device obviously still has inconvenience and defects in structure and use, and needs to be further improved urgently.

In order to solve the above-mentioned problems, the relevant manufacturers have tried their best to find a solution, but no suitable design has been developed for a long time, and the general LED lighting device has no suitable structure to solve the above-mentioned problems. Obviously, it is a problem that relevant industry players are eager to solve.

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