Led lighting device and illumination apparatus

Abstract

The present invention provides an LED lighting device and an illumination apparatus, wherein the LED lighting device includes a pair of input terminals to which AC voltage is input, the AC voltage being phase-controlled by a dimmer for phase-controlling AC voltage of an AC source; a damping circuit which has a resistor inserted to a position, into which input current flows from the AC source via the dimmer in series, and a capacitor and an inductor which form a closed circuit together with the AC source and the dimmer, and suppresses high-frequency vibration generated in the dimmer when a phase control element of the dimmer is turned on; and an LED lighting circuit which rectifies AC voltage phase-controlled and input via the pair of input terminals, converts DC output voltage, which is obtained by rectification, so that the voltage adapts to a load, and lights the LED. The illumination apparatus includes an illumination apparatus body, an LED lighting device and an LED.

Description

technical field [0001] The present invention relates to an LED lighting device and a lighting device in the technical field of lighting, in particular to a dimmable light emitting diode (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 triac is widely used as a dimmer for an incandescent light bulb. Therefore, if the dimmer can be used to dim the LED, it is possible to realize a low-power dimming-compatible lighting system by simply replacing the light source without replacing existing equipment or wiring. , so it is very convenient, but actually there are the following problems. [0003] (1) When the LED is turned on 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 flickers. That is, when the LED is turned on with the s...

AI Technical Summary

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.

Images