LED vehicle headlamp

Abstract

The invention relates to the technical field of vehicle lamps, in particular to an LED vehicle headlamp. The LED vehicle headlamp comprises a temperature homogenizing plate, LED-COB light sources, bulb metal covers, fin radiators and a fan; the temperature homogenizing plate is a linear flat plate structure, is provided with a vacuum evaporation cavity and a vacuum condensation cavity inside, and is provided with a capillary core layer; the LED-COB light sources are bonded on the outer surface of the evaporation cavity; at least two fin radiators are respectively bonded on two side surfaces of the condensation cavity; the fan is arranged at the back ends of the fin radiators; the bulb metal covers are made of a magnesium alloy material; and besides the fan and a base shell, the rest parts are welded at high temperature by tin-silver-copper environment-friendly tin paste. The LED vehicle headlamp integrates four cooling technical methods of phase-change cooling, metal cooling sheet heat conduction cooling, air cooling and radiation cooling, is high in cooling efficiency, excellent in vibration preventing effect, firm in structure, convenient for installation and precise in focusing, can perfectly replace a traditional bulb, and is suitable for various vehicle types.

Description

technical field [0001] The invention relates to the technical field of vehicle lights, in particular to an LED vehicle headlight. Background technique [0002] The current car headlights include halogen lamps, xenon lamps and LED lamps. [0003] Halogen lamps are relatively cheap, but they have high energy consumption, poor brightness, high heat generation, and most of them emit yellow light, the illumination is not high, and they are easy to age. [0004] Xenon lamps (HID) have three times higher light intensity than halogen lamps, but consume only two-thirds of the energy; Xenon lamps use almost the same light color as sunlight, creating better visual conditions for drivers Longer life. However, the price of xenon lamp is high, the assembly is complicated and the light concentrating is poor, and although the calorific value of xenon lamp is smaller than that of halogen lamp, it is not low. [0005] LED lights are a new green lighting high-tech industry, especially the L...

AI Technical Summary

Problems solved by technology

However, the electrical conductivity of the insulating board is very limited, and the heat dissipation effect is extremely poor.

If the insulating plate is replaced by a metal heat sink, the surface of the metal plate needs to be insulated first. At the same time, the metal plate needs to have a certain thickness to ensure the heat transfer effect. The thickness of the plate will be large, it will not be able to focus accurately, and the light will diverge, which will affect the light pattern of the entire headlight and affect the normal use of the headlight

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