Fixing structure for automotive headlamp xenon bulb

Abstract

The invention relates to a fixing structure for an automotive headlamp xenon bulb. The bulb is mounted on a lamp shell of a lamp holder. A bulb fixing seat comprises two semicircular seat bodies. Each seat body is provided with a boss and a limiting post. A vertical groove in the inner side of the protruding arc wall and a peripheral clamping groove in the peripheral wall of each seat body communicate with each other. Two spring pieces are connected to the bosses on the corresponding seat bodies through at least one corresponding assembling hole in a pressing manner. Bottom plates of the two seat bodies are inserted into the neck of the lamp shell and connected in a bucked manner. An upper convex point on the inner side of each spring piece abuts against the bottom face of a lamp holder limiting disc. Elastic pins penetrate gaps in the bottom plates of the seat bodies and abut against the lamp shell of the lamp holder. At least two protruding blocks on the periphery of each base for a reflector penetrate the corresponding vertical grooves and are rotated to the peripheral clamping groove. Reflectors are clamped to the corresponding seat bodies. The bases of the reflectors are pressed on the upper convex points of the outer sides of the corresponding spring pieces. The fixing structure has the beneficial effects of being simple in structure, capable of fixing the reflectors and the lamp holder without loosening and capable of effectively solving the problems of light scattering and poor concentrating caused by waggling of the lamp bulb of an automotive lamp.

Description

technical field [0001] The invention relates to a fixing structure for a xenon bulb of an automobile headlight, belonging to the technical field of vehicle lighting. Background technique [0002] High-intensity discharge lamps are referred to as HID lamps, also known as gas discharge lamps. This kind of lamp has many advantages such as high luminous efficiency, high brightness, low energy consumption, high reliability, long life, and is not affected by voltage fluctuations on the car. It is the latest contemporary car headlight source. However, the application of traditional xenon lamps is difficult and the system cost is high, which objectively hinders the application and promotion of xenon lamps. The emergence of D5S solves this problem well. The short light center height of D5S makes the projection module of D5S more compact and saves headlight space. At the same time, thanks to the integrated and low-power design, the complexity of the xenon lamp system is greatly reduc...

AI Technical Summary

Problems solved by technology

However, the headlights are affected by vibration and road conditions when the vehicle is running, and the reflector and the lamp holder will be relatively loose or rotated, and a slight rotation or looseness will cause the luminous point of the xenon lamp to deviate from the position of the optical center of the car design, resulting in astigmatism, focus Therefore, the design of the fixed structure of the bulb becomes the key that directly affects the light distribution quality of the car lamp.

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