LED energy saving lamp

Abstract

The invention relates to an LED energy saving lamp, comprising an LED lamp set and a circuit device thereof. The circuit device comprises a rectification circuit and a filter circuit, wherein the rectification circuit consists of rectistacks VD1-VD4, and the direct current output ends of the rectistacks VD1-VD4 are connected with the LED lamp set; the two ends of an LED lamp set are connected with a filter capacitor C3 in parallel; one alternating input end of the rectistacks VD1-VD4 is connected with a bidirectional thyristor T1 in series, and the two ends of the bidirectional thyristor T1 are connected with a resistance and capacitance phase shifting circuit in parallel; and a bidirectional diode VD is connected between a serial-connection point of a resistor and a capacitor and a trigger electrode of the thyristor T1. In the circuit, since the phase shifting voltage of a phase shifting circuit is used for controlling the breakover of the thyristor, the alternating current input voltage of the rectistacks can be regulated. The alternating current voltage is directly connected to the LED lamp set through rectification and filtering, and the circuit does not contain divider resistors or transformers. The invention has the advantages of energy saving, consumption reduction, simple circuit, low cost and the like.

Description

technical field [0001] The invention relates to an LED energy-saving lamp, in particular to an LED energy-saving lamp with simple circuit, low energy consumption and direct access to AC mains. Background technique [0002] Today, when global energy sources tend to be tense, energy conservation and environmental protection have become the key trend of industrial development, and energy-saving industry has become an industry of global concern. On the international front, the U.S. Department of Energy pointed out that the energy consumed by lighting accounts for 22% of the annual power generation in the United States. The widespread use of LED lighting will reduce this energy consumption by 50%. If this is objectively considered, by 2027 LED lighting would achieve an annual reduction in energy consumption equivalent to 500 million barrels of oil, while also reducing CO2 emissions. In China, the Shenzhen Municipal Government also pointed out that in the next 20 years, Shenzhen...

AI Technical Summary

Problems solved by technology

[0003] Since the working voltage of the LED is DC 2-3.6V, and the existing mains is AC 220V, if the mains AC 220V is rectified and directly connected to the LED, even if multiple LEDs are used in series, 50-70 LEDs are needed. In order to produce LED energy-saving lamps with different power specifications, in terms of circuit, transformer step-down or resistor step-down must be used, but the use of transformer step-down increases the cost and increases the volume and weight of the lamp, and the application field is limited; When the voltage is high, since the resistor is an energy-consuming part, it not only increases energy consumption, but also makes the lamp heat, which not only increases the design difficulty of the lamp, but also shortens the service life of the lamp

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