Automobile headlamp temperature control method

A technology for automobiles and headlights, which is applied to vehicle components, energy-saving control technology, electrical components, etc., and can solve problems such as changes in the brightness of headlights

Pending Publication Date: 2020-11-03
CHERY AUTOMOBILE CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This way of reducing the current will cause the brightness of the headlight to change suddenly,

Method used

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  • Automobile headlamp temperature control method
  • Automobile headlamp temperature control method
  • Automobile headlamp temperature control method

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Embodiment Construction

[0012] A method for controlling the temperature of an automobile headlight, comprising the following steps: A, powering on the automobile headlight, and maintaining a constant output of the headlight current value; B, reading the ambient temperature T of the headlight, and when the temperature T rises to a threshold X, the The lamp current gradually decreases to the set value I within the unit time S, and the headlight brightness decreases accordingly, I<i; C, read the headlight ambient temperature T, when the temperature drops to the safe value Y, the headlight current is within the unit Gradually rise to the set value i within the time S, and the brightness of the headlight increases accordingly, Y<X; D. Read the ambient temperature T of the headlight, and repeat steps B and C.

[0013] In the above method, when the temperature of the headlight rises to the threshold value after running for a period of time, the current starts to decrease slowly. The decrease of the current i...

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PUM

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Abstract

The invention provides an automobile headlamp temperature control method which comprises the following steps that A, an automobile headlamp is powered on, and the current value of the headlamp keeps constant i output; B, the ambient temperature T of the headlamp is read, when the temperature T rises to a threshold value X, the current of the headlamp is gradually reduced to a set value I in unit time S, the brightness of the headlamp is reduced accordingly, and I is smaller than i; C, the ambient temperature T of the headlamp is read, when the temperature is reduced to a safety value Y, the current of the headlamp is gradually increased to a set value i in unit time S, and the brightness of the headlamp is increased accordingly, Y< X; D, the ambient temperature T of the headlamp is read, and the steps B and C are repeated. According to the method, the brightness of the automobile headlamp is slowly reduced or increased by slowly reducing or increasing the current of the automobile headlamp, so that a driver can slowly adapt to the brightness change during night driving, the situation that the observation effect of the driver is influenced by sudden change of the lamplight brightness is avoided, and the safety of night driving is improved.

Description

technical field [0001] The invention belongs to the field of vehicle lighting lamps, and in particular relates to a temperature control method for automobile headlights. Background technique [0002] With the continuous development of the automobile industry, more and more vehicles use LED lights as the headlights of the car. The headlights of the car are the brightest light components on the vehicle, and their power is also the highest. [0003] High-power lighting components will also bring high heat generation. The heat generated by traditional xenon or halogen headlights is much higher than that of LED headlights, but the brightness of the bulb output will not change due to temperature. The focus of its thermal design is Uniform temperature design in the shell. However, the light output of the LED will affect the stability of the PN junction temperature due to its own heat or high temperature from the engine compartment. Therefore, the driver needs to detect the tempera...

Claims

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Application Information

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IPC IPC(8): H05B45/18B60Q1/04
CPCB60Q1/04H05B45/18Y02B20/40
Inventor 任海瑞郑玉芳徐青
Owner CHERY AUTOMOBILE CO LTD
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