De-energized line-loss-free high-voltage injection molding module

Abstract

The invention discloses a de-energized line-loss-free high-voltage injection molding module, and belongs to the field of advertising logo LED modules. The injection molding module comprises a shell, aPCB board which is arranged in the shell and a circuit which is arranged on the PCB board, wherein the circuit comprises a fuse, a rectifier bridge, an LED light group, a first resistor, a second resistor and a linear constant-current IC; the LED light group comprises a plurality of high-voltage LED beads which are connected in series; the alternating current end of the rectifier bridge is connected to an alternating current power supply; and one of direct current ends of the rectifier bridge is connected to one end of the LED light group and the other direct current end of the rectifier bridge is connected to one end of the first resistor, one end of the second resistor and a GND pin of the linear constant-current IC. In comparison with the prior art, the injection molding module provided by the invention has the beneficial effects that by adopting the alternating current power supply, line loss, which is quite low, can be negligible; therefore, the injection molding module achievescascading without the line loss, the injection molding module is free from pressure drop and the module is high in cascading quantity; the module is free from external power supply driving; a linear constant-current ID drive circuit is arranged in the module; constant-current precision is within 2; and the module is rapid in installation and is energy-saving and environment-friendly.

Description

technical field [0001] The invention relates to the field of LED modules for advertising signs, in particular to a power-off lossless high-voltage injection molding module. Background technique [0002] In the era of rapid economic development in the 21st century, the advertising logo lighting industry highlights several major themes, safety, energy saving, and green environmental protection. At present, the lighting source modules for advertising signs in the market are basically powered by external low-voltage drive, which has problems such as large line loss, large voltage drop, small number of cascades, cumbersome wiring, many wiring connection points, and poor contact. Contents of the invention [0003] In order to overcome the deficiencies of the prior art, the present invention provides an energy-saving and environment-friendly de-powering lossless high-pressure injection molding module. [0004] In order to solve above-mentioned technical problem, the basic techni...

AI Technical Summary

Problems solved by technology

At present, the advertising logo lighting source module in the market is basically powered by an external power supply low-voltage drive, which has problems such as large line loss, large voltage drop, small number of cascades, cumbersome wiring, many wiring connection points, and poor contact.

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