Automobile headlamp assembly and LED headlamp bulb with inner heat dissipation air duct and outer heat dissipation air duct

Abstract

The invention provides an LED headlamp bulb with an inner heat dissipation air duct and an outer heat dissipation air duct. The LED headlamp bulb comprises a left LED lamp bead, a right LED lamp bead,a lamp pole, a heat pipe, heat dissipation fins, a motor base, a first direct-current motor, a first fan blade, a second direct-current motor, a second fan blade, a fan cover, a mounting ring and a driving power supply circuit board. According to the LED headlamp bulb, the LED lamp beads are cooled through the outer cooling air duct, and the service life and the use performance of the LED lamp bead and the LED chip in the LED lamp bead are improved. Hot air in the lamp cavity is exhausted out of the lamp cavity through the inner heat dissipation air duct, and then the air is exhausted into the atmosphere through the tangential ventilation opening in the dustproof cover to dissipate heat of the lamp cavity, so that all parts in the lamp cavity work at a proper temperature for a long time,the aging speed is reduced, the service life of all the parts in the lamp cavity is prolonged, the lamp cavity is not prone to fogging any more, and the lighting effect and the driving safety are improved. The invention further provides an automobile headlamp assembly comprising the LED headlamp bulb.

Description

technical field [0001] The invention relates to the technical field of automobile LED headlight bulbs, in particular to an automobile headlight assembly and an LED headlight bulb with dual internal and external heat dissipation air ducts. Background technique [0002] The headlight assembly refers to the left and right ends installed on the head of the car. It is used for lighting when the car is driving at night or on a dark road. The entire driving lighting system that gathers headlights, turn signals, fog lights, daytime running lights, width lights, lines, etc., is commonly called a headlight assembly. Which of the above-mentioned lights are included in the car headlight assembly will be selectively arranged and combined from the above-mentioned lights according to different configurations and different models. The above lights such as low beam, high beam, turn signal, fog lights, daytime running lights and width indicators are usually a set of independent light systems...

AI Technical Summary

Problems solved by technology

[0007] When the car headlight assembly is working, the light source in the headlight assembly will generate a lot of heat while emitting light, and the heat will accumulate in the lamp cavity in the headlight assembly, raising the lamp cavity The temperature of the air in the headlight assembly increases the working temperature of the components (such as bulbs, light distribution mirrors, reflectors, etc.) in the lamp cavity of the headlight assembly, so that each zero Components work at a higher temperature for a long time, and the aging becomes faster, which seriously affects the service life of each component in the lamp cavity in the headlight assembly, and the high temperature in the lamp cavity in the headlight assembly makes the headlight Fog is easy to form in the lamp cavity of the assembly, which seriously affects the normal operation of the headlight assembly and brings great unfavorable factors to driving safety.

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