LED automobile head lamp

Abstract

The invention relates to the technical field of automobile lamps, in particular to an LED automobile head lamp. The LED automobile head lamp comprises a stereoscopic even-temperature board, LED-COB light sources, an outer bulb metal cover, a finned heat sink and a fan. The stereoscopic board is of a T-shaped stereoscopic structure and is internally provided with a vacuum evaporation cavity and a condensation cavity, and a capillary core layer is arranged. The LED-COB light sources are pasted to the outer surfaces of the evaporation cavity, the front end of the finned heat sink is pasted to the outer surface of the condensation cavity, and the fan is arranged at the back end of the finned heat sink. The outer lamp metal cover is made of magnesium alloy materials. Besides the fan, the parts are connected in a high-temperature welded mode through tin-silver-copper environment-friendly solder paste. According to the LED automobile head lamp, the four heat sinking technical means including phase change heat sinking, metal-cooling-fin heat conduction heat sinking, air-cooling heat sinking and radiation heat sinking are integrated, and heat sinking efficiency is high; the anti-vibration effect is good, and the structure is firm; installation is convenient, focusing is accurate, an original bulb can be perfectly replaced, and the LED automobile head lamp 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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