MBL driving circuit-based LED bulb

Abstract

The invention discloses an MBL driving circuit-based LED bulb. The MBL driving circuit-based LED bulb comprises a lamp holder, a plastic bulb shell and an MBL driving circuit assembly, wherein the MBLdriving circuit assembly comprises a wire winding fuse resistor LF1, a rectification bridge DB1, a metal oxide film resistor R1 and an LED light-emitting body P1, the rectification bridge DB1 comprises a pin 1, a pin 2, a pin 3 and a pin 4, the pin 1 is a positive input end, a mains supply live line is connected in series with the wire winding fuse resistor LF1 having a surge suppression effect and is connected to the pin 1, the pin 3 is connected with a mains supply null line, the pin 2 is a positive output end, the pin 4 is a negative output end, the pin 2 is connected in series with the metal oxide film resistor R1 and the LED light-emitting body P1 and then is connected with the pin 4 to form a loop. The bulb is convenient to produce and install and is low in cost, and a series of defect and quality potential risk caused by manual welding are reduced; with the adoption of the MBL driving circuit assembly, the power supply loss of the circuit is reduced, the power factor is improved, a few components are involved, and the LED bulb is low in cost, high in surface impact-resistant capability, long in continuous working lifetime and high in stability and reliability.

Description

【Technical field】 [0001] The invention relates to the technical field of lighting fixtures, in particular to the technical field of an LED light bulb based on an MBL drive circuit. 【Background technique】 [0002] With the development of LED lighting technology, LED light strip (filament) glass bulbs packaged with LED light strip (filament) using the traditional two (double) terminal energization method are very popular in the market, because the LED filament is in the working process Heat generation, the conventional production process is to seal the LED filament in a glass bulb filled with heat-conducting inert gas, and use gas heat dissipation to ensure the working life of the LED light strip. The welding and positioning of the two ends of the electrically connected LED filament are manually operated. The process is more complicated; in addition, the fragile defect of the glass bulb leads to the problem of glass breakage and loss in the whole process from production to sal...

AI Technical Summary

Problems solved by technology

Switching power supply circuits rely on dedicated chips and inductive devices, which are expensive, and complex circuit components often include capacitors, which have a short service life, and the chips, capacitors, and inductors are sensitive to temperature rise, and the circuit will generate power noise and noise when the circuit is in the switching state. Electromagnetic compatibility issues, the entire circuit has capacitors and low power factor, there are a series of limiting defects

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