Thermal management and power supply control system for at least one light source

一种电源控制装置、光源的技术，应用在机动车辆的灯装置,热管理和电源控制系统领域，能够解决光性能损失等问题，达到提高寿命的效果

Active Publication Date: 2017-02-22
VALEO VISION SA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, this method causes a loss of light performance at low temperature

Method used

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  • Thermal management and power supply control system for at least one light source
  • Thermal management and power supply control system for at least one light source

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Embodiment Construction

[0031] Like reference numerals are used to describe like concepts in several separate embodiments. For example, the reference numerals 100, 200 describe a power supply control arrangement for at least one light source according to the invention in two separate embodiments.

[0032] figure 1 A power control device 100 according to the present invention is schematically illustrated. The converter 110 can convert the input DC voltage V IN converted to the output DC voltage V OUT , the converter may be a buck or a boost converter, or a combination of a buck and a boost converter. The converter can provide current with a fixed target strength. For example by resistor R LOAD The illustrated load circuit 120 is powered using the converter 110 . The load circuit 120 comprises at least one, preferably several light sources, advantageously connected in series. They are advantageously light emitting diodes (LEDs). The device 100 does not have a microcontroller element that adjust...

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PUM

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Abstract

The invention relates to a device and method for controlling the power supply of light sources, preferably light emitting diodes (LED). The invention is characterized in that it allows the thermal management of LEDs without requiring the use of a programmable DC / DC converter, by systematically adjusting an automatic control value of the DC / DC converter used.

Description

technical field [0001] The invention relates to the field of power supplies for light sources. In particular, the present invention relates to thermal management and power control systems and methods for light sources, more specifically light emitting diodes (LEDs). The invention also relates to a lamp arrangement for a motor vehicle. Background technique [0002] A light emitting diode (LED) is an electronic device that emits light when an electric current passes through it. The intensity of light emitted by an LED generally depends on the intensity of the current passing through the LED. LEDs are characterized, among other things, by having a current intensity threshold. This maximum forward current typically decreases with increasing temperature. When current with an intensity greater than a threshold is used to power an LED, the LED may be damaged or destroyed. In the automotive sector, LED technology is increasingly being used for various light signaling solutions....

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H05B33/08H05B44/00
CPCH05B45/50H05B45/3725H05B45/18H05B45/10H05B45/56B60Q1/26
Inventor 希巴斯丁·克里克
Owner VALEO VISION SA
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