Vehicle signal map LED electronic control module

Abstract

The invention relates to a vehicle signal map LED electronic control module comprising an LED string, an LED string drive circuit, and a same circuit board on which the LED string and the drive circuit are located; the LED string comprises one or more LEDs connected in series; the circuit board covers and is bonded and fixed on the top surface of a radiator through a heat radiation glue layer; theradiator is provided with a sink; the sink opens on the top surface of the radiator; the LED string is arranged on the top of the circuit board; members of the drive circuit are arranged on the bottom of the circuit board, and located in the sink; a sheet type or cylindrical type heat radiation structure and a connecting wire or a PIN socket connector introducing port are arranged on the bottom of the radiator; the drive circuit employs a DCDC type drive circuit BOOST-BUCK topology framework. The LED electronic control module integrating the LEDs with the LED drive can meet the miniaturization and standardization requirements while satisfying optical system light decay requirements, thus enabling one LED lamp module to adapt to all signal lamp body structures.

Description

technical field [0001] The invention relates to an LED electronic control system, which is mainly suitable for automobile signal lights using LED light sources. Background technique [0002] LED has significant advantages such as fast response speed, low power consumption, energy saving, and long life. Due to the fast response speed of the LED, it is especially suitable for the application of the front and rear lamps of the car. With the improvement of semiconductor materials and packaging technology, the luminous flux and light output efficiency of LED light sources have gradually increased, and LED light sources have been widely used in the field of automotive lighting. LED driving technology has gradually developed along with the development of LED application technology. [0003] LED is used as the light source of automobile rear fog lights. Due to the upper and lower limits of the luminous flux of the optical system, there are very high requirements for the light deca...

AI Technical Summary

Problems solved by technology

Faced with the increasingly thinner and smaller rear lamp design, the system design scheme of this rear fog lamp has become more and more difficult to meet the design of the lamp body, and it is also difficult to achieve standardization, so that a rear fog lamp The electronic control system is suitable for the lamp body structure of the rear lamp of all models

[0005] Commonly used rear fog lamp LED electronic control system design methods are: place the LED light source and LED driver together on the same PCB board, and the LED driver adopts a simple resistive or linear constant current method, because there are only a few resistors or linear constant current. There is only one flow chip, and the circuit of the LED driving part will not take up too much space, so this solution can basically meet the miniaturization design, but due to the efficiency of the LED driving and the influence of the heat generated on the LED, the optical system The light attenuation cannot achieve the expected effect

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