A low-voltage flat crystal lamp led bulb

Abstract

The invention discloses a low-pressure flat plate crystal lamp LED bulb. The low-pressure flat plate crystal lamp LED bulb comprises a light source, a lamp cover, a lamp base and a fixed connecting module; the lamp base is fixed on the fixed connecting module; the light source is arranged in the lamp base; the lamp cover covers the light source; the fixed connecting module is matched and fixed with a flat plate; the light source includes a substrate, and an LED unit and a rectifier module arranged on the substrate; an input end and an output end of the rectifier module are respectively connected with an external power supply and an input end of the LED unit; the LED unit is a structure formed by connecting multiple LEDs in a manner of series and parallel, is lower in accessed voltage compared with a traditional serial connecting structure, and is high in safety; if one string of LEDs are damaged, the work of other strings of LEDs is not influenced, and the troubleshooting is convenient; and a rectifier bridge is arranged on the substrate, is suitable for alternating current and direct access, has no need to distinguish positive and negative poles, and is convenient for factory production and autonomous replacement of the light source by nonprofessional technicians.

Description

technical field [0001] The invention relates to an LED lamp, in particular to a low-voltage flat crystal lamp LED bulb. Background technique [0002] Flat-panel crystal lamps are hung on the ceilings of business meeting rooms, hotel halls, large shopping malls, restaurants, living rooms and other places in order to obtain atmospheric and luxurious decoration and lighting effects. In recent years, with the vigorous promotion of LED light sources by the government and all walks of life, combined with the characteristics of LED's own green energy saving and environmental protection, it has been applied in various lighting sources, and the flat crystal lamp is no exception. At present, some manufacturers have used LED on crystal lamps. The light source replaces the traditional light source. [0003] However, this type of LED light source has exposed many problems in practical applications: First, the LEDs in the light source are in series mode, and if one LED is broken, the ent...

AI Technical Summary

Problems solved by technology

[0003] However, this type of LED light source has exposed many problems in practical applications: First, the LEDs in the light source are in series mode, and if one LED is broken, the entire string of LEDs will not light up, and it is troublesome to check, time-consuming and laborious. Mode makes the access voltage high, which affects safety performance; secondly, the substrate of the light source is limited by the insulation technology, using cheap and poor heat dissipation glass fiber board, which is limited by the heat dissipation performance, and it is difficult for this type of light source to achieve high power, which affects the crystal Optical parameters such as the brightness and illuminance of the lamp; Third, ordinary LEDs work in DC. Due to the one-way conduction characteristics of LEDs, traditional LED light sources need to distinguish between positive and negative when they are connected to the DC input. The danger of reverse breakdown LED, so it is easier for non-professional technicians to install, maintain, and replace; Fourth, for LED light sources using aluminum substrates, the insulation between the pins and the metal layer of the aluminum substrate is also an important factor related to the life of the light source , otherwise the short circuit will burn out the LED in the circuit

Images