Long-distance light/ short-distance light control system for automobile headlamp

Abstract

The invention relates to a long-distance light / short-distance light control system for an automobile headlamp. The long-distance light / short-distance light control system comprises a rectifying circuit, a pulse circuit and a relay elastic conversion circuit, wherein the rectifying circuit is respectively connected with a long-distance light control end, a short-distance light control end and a public control end to obtain a control power supply and output after the rectification, and an output end of the rectifying circuit is connected with a lamp; the pulse circuit is connected with the output end of the rectifying circuit to generate a pulse signal; and the relay elastic conversion circuit is connected between the rectifying circuit and an adjusting coil for adjusting the focus position of the lamp and is switched on according to the pulse signal, so that the adjusting coil is electrified to adjust the focus position of the lamp. The adjusting coil is an electromagnetic direct current solenoid coil. The control system supplies the power in the manner of pulse, so that the control system is shorter in electrifying work time, is small in calorific value, and has the effects of energy saving and durability when the adjusting coil is used for adjusting the light; the focus position of the lamp can be more exactly adjusted by the electromagnetic direct current solenoid coil; and the control system is externally connected with an external power supply, so that the control system is flexible to use according to the physical truth of a motor circuit, and the safety of the circuit and the stability of the lamp light can be guaranteed.

Description

technical field [0001] The invention relates to the technical field of automobile lamps, in particular to an automobile headlight far and low beam control system. Background technique [0002] In the telescopic controller (hereinafter referred to as the controller) of the HID telescopic H4 lamp used in the modified car, the high and low beam switching control part uses a coil to compress the spring after power-on, and the spring returns after power-off to change the luminous xenon lamp in the lampshade. Focus position, and then realize the conversion of high beam and low beam. This control method of the existing controller is likely to cause the following problems: 1. The coil is energized for a long time, generating a large amount of heat, which will accelerate the aging and deformation of the components, resulting in poor expansion and contraction; 2. The compression and release distance of the spring is relatively difficult. Precisely controlled variables may easily caus...

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Problems solved by technology

This control method of the existing controller is likely to cause the following problems: 1. The coil is energized for a long time, generating a large amount of heat, which will accelerate the aging and deformation of the components, resulting in poor expansion and contraction; 2. The compression and release distance of the spring is relatively difficult. Precisely controlled variables can easily cause inaccurate focal lengths of far and near beams; 3. The heating of the coil will weaken the elasticity of the spring and shorten the service life of the product; 4. The power supply of the controller directly uses the original car wiring harness. The power supply is unstable, which will affect the control smoothness

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