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Method and device for controlling the illumination intensity of automobile-used LED illuminating system

A technology of LED lighting and LED lighting lamps, applied in the field of lighting, can solve problems such as unfavorable promotion and adoption, affecting service life, wear of moving parts, etc., to achieve the effects of easy promotion, easy implementation, and no seal leakage

Inactive Publication Date: 2009-09-16
SHANGHAI RES CENT OF ENG & TECH FOR SOLID STATE LIGHTING
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Problems solved by technology

[0006] Although this technical solution attempts to solve the overall heat dissipation problem of high-power LED lighting devices when used as vehicle headlights, it only uses water cooling methods, one cannot fundamentally solve the problem, and the other is that the structure is too complicated and there are wear and tear of moving parts Problems affect its service life, which is not conducive to promotion and adoption

Method used

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  • Method and device for controlling the illumination intensity of automobile-used LED illuminating system
  • Method and device for controlling the illumination intensity of automobile-used LED illuminating system

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Embodiment Construction

[0030] The present invention will be further described below in conjunction with the accompanying drawings.

[0031] figure 1 Among them, the control method of the present invention includes:

[0032] A. Detection of vehicle speed S 1 ;

[0033] B. The detected vehicle speed S 1 with set value S 设 Compare;

[0034] C. According to the difference S between the above two 差 ; Output a control signal K i ;

[0035] D. Use the control signal K i Controlling the output voltage and / or current and / or duty cycle (ie output power) of an adjustable power supply;

[0036] E. Control the working power of LED lights by adjusting the output power of the adjustable power supply;

[0037] F. Through the above method, the LED lighting can obtain a light intensity proportional to the speed of the vehicle.

[0038] Specifically, its driving speed S 1 Obtained by vehicle speed detector or vehicle speedometer.

[0039] Its set value S 设 It is linear or proportional to the vehicle spee...

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Abstract

A method and a device for controlling the illumination intensity of an automobile-used LED illuminating system belong to the illumination field, and the method is characterized by detecting the running speed; comparing the detected running speed with a set value; outputting a control signal according to the difference value of the running speed and the set value; using the control signal for controlling the output power of an adjustable power supply; further controlling the working efficiency of an LED illuminating lamp; and causing the illuminating lamp to obtain an illumination intensity in direct proportion to vehicle speed. The invention also provides a control device adopting the method. Due to reasonable utilization of the corresponding relation among the vehicle speed, required illumination distance, air flow velocity difference and the heat dissipation capability of an air-cooled type heat dissipation device, the invention can lead the whole LED illumination device and the auxiliary device to adjust the illumination intensity or working efficiency of a high-power LED illumination device according to the vehicle speed and control the heating quantity, and is capable of reasonably solving the heat dissipation problem of the high-power LED illumination device used as a front vehicle illumination lamp with the help of the air-cooled heat dissipation structure.

Description

technical field [0001] The invention belongs to the lighting field, in particular to an LED lighting device used for vehicle lighting. Background technique [0002] Due to considerations and advantages in terms of service life, energy saving, light intensity or luminescence spectrum, automobile manufacturers are increasingly using high-power LED lighting devices as light-emitting devices for various vehicle headlights. [0003] However, the heating phenomenon of high-power LED light-emitting devices increases rapidly with the increase of its power, and even seriously affects its service life. [0004] For this reason, many manufacturers of high-power LED light-emitting devices adopt various methods to solve their heat dissipation problems, such as the Chinese patent application "High heat dissipation LED light-emitting component and its manufacturing method" with the application number CN200410008664.9, and the patent number is CN200410016272. 7’s Chinese patent “A Heat Dis...

Claims

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Application Information

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IPC IPC(8): H05B37/02G05F3/02F21S8/10F21V29/02F21W101/02F21Y101/02F21V29/60F21W107/10F21Y115/10
CPCY02B20/48Y02B20/40
Inventor 李抒智王康平杨卫桥马可军杨洁翔
Owner SHANGHAI RES CENT OF ENG & TECH FOR SOLID STATE LIGHTING
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