KR960013820A

KR960013820A - Brightness control circuit of vehicle instrument lamp

Info

Publication number: KR960013820A
Application number: KR1019940026095A
Authority: KR
Inventors: 김영경
Original assignee: 한승준; 기아자동차 주식회사
Priority date: 1994-10-12
Filing date: 1994-10-12
Publication date: 1996-05-22

Abstract

본 발명은 차량의계기등 밝기 제어회로에 관한 것으로, 종래에는 벌브타입 계기등의 밝기 제어회로를 이용하여 에이디 구동전원을 공급하면 낮은 듀티비인 경우에 엘이디의 떨림 현상이 발생되므로, 엘이디 구동을 위해 별도의 밝기 제어회로가 필요하였다. 이에 따라 본 발명은, 차량의 계기증 밝기 제거회로 있어서, 콤비네이션 스위치의 1단(TNS S/W)을 통한 전원을 다수의 계기등에 인가함과 아울러 다이오드를 통하여 발전회로와 정전압단에 공통으로 인가하고, 점화 스위치를 통한 전원이 다이오드를 통하여 상기한 발진회로 및 정전압단에 공통으로 인가되게 하며, 그 정전압단의 출력을 상기 발진회로의 발진주기를 제어하는 가변저항에 인가하고 , 그 가변저항의 저항치 변동에 따른 가변전압을 전압 출력단을 통하여 엘이디 구동용 타시스템에 공급하도록 구성한 것으로서, 기존 회로를 이용하여 간단하게 엘이디 전압 출력단을 통하여 엘이디 구동용 타시스템에 공급하도록 구성한 것으로서, 기존 회로를 이용하여 간단하게 엘이디 밝기를 조정할 수 있는 구동전원을 공급할 수 있게 된다.The present invention relates to a brightness control circuit of a vehicle instrument lamp, and in the related art, when supplying an AD driving power using a brightness control circuit of a bulb type instrument lamp, an LED shake occurs in a low duty ratio. A separate brightness control circuit was needed. Accordingly, the present invention is applied to the power generation circuit and the constant voltage stage through a diode while applying the power supply through the first stage (TNS S / W) of the combination switch to a plurality of instruments, etc. The power supply through the ignition switch is commonly applied to the oscillation circuit and the constant voltage stage through the diode, and the output of the constant voltage stage is applied to a variable resistor that controls the oscillation cycle of the oscillation circuit. It is configured to supply the variable voltage according to the resistance change to other LED driving system through the voltage output terminal, and is simply configured to supply the other system for LED driving through the LED voltage output terminal using the existing circuit. It is possible to supply a driving power that can easily adjust the brightness of the LED.

Description

Brightness control circuit of vehicle instrument lamp

본 내용은 요부공개 건이므로 전문내용을 수록하지 않았음As this is a public information case, the full text was not included.

제1도는 종래 차량의 계기등 밝기 제어회로도,1 is a brightness control circuit diagram of a conventional vehicle instrument lamp,

제2도는 본 발명에 의한 차량의 계기등 밝기 제어회로도.2 is a brightness control circuit diagram of the instrument lamp of the vehicle according to the present invention.

Claims

In the vehicle light control circuit of the vehicle configured to control the brightness of the light through the switching means the duty ratio is controlled by the oscillation means, the power supply through the first stage (TNS S / W) of the combination switch to the plurality of lights In addition, the diode is further applied to the oscillation means and the constant voltage means through a diode, and the output of the constant voltage means is applied to the variable resistor controlling the oscillation period of the oscillation means, and the variable voltage according to the variation of the resistance value of the variable resistor is applied. The brightness control circuit of the vehicle's instrument lamp, characterized in that configured to supply to other systems for driving the LED through the voltage output stage.

The brightness control circuit of claim 1, wherein the power supply through the ignition switch is commonly applied to the power generation means and the constant residual pressure means through a diode.

The brightness control circuit of claim 1, wherein the signal ground terminal of the oscillation unit and the power ground terminal of the switching unit are separated from each other.

※ Note: The disclosure is based on the initial application.