JPS60160238U

JPS60160238U - Compensation circuit for automotive headlights

Info

Publication number: JPS60160238U
Application number: JP4841584U
Authority: JP
Inventors: 石渡　洋一
Original assignee: 市光工業株式会社
Priority date: 1984-04-04
Filing date: 1984-04-04
Publication date: 1985-10-24

Abstract

(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Brief explanation of the drawing]

第１図は従来の自動車前照灯の断線補償回路構成を説明
するための図である。第２図は本考案の　　　゛一実施
例を水弟１図に対応する断線補償回路のブロック図、第
３図は第２図を具体的な回路構成で示した図である。８・・・ライティングスイッチ、９・・・前照灯、１０
・・・制御回路、１１・・・駆動回路、１２ａ、１２ｂ
・・・断線検出回路、１３ａ、１３ｂ・・・表示回路、
１４・・・代替表示回路。二？：Ｉ―門４′°“　　　［〒〒１に″“− Ｌしり割　　　−FIG. 1 is a diagram for explaining the configuration of a disconnection compensation circuit for a conventional automobile headlamp. FIG. 2 is a block diagram of a disconnection compensation circuit corresponding to the first embodiment of the present invention, and FIG. 3 is a diagram showing a specific circuit configuration of FIG. 2. 8... Lighting switch, 9... Headlight, 10
...Control circuit, 11...Drive circuit, 12a, 12b
...disconnection detection circuit, 13a, 13b...display circuit,
14...Alternative display circuit. two? : I-Mon 4'°"[〒〒1に""- L Shiriwari-

Claims

[Scope of utility model registration request]

When one of the high beam filament and low pea filament that makes up an automobile headlamp breaks, it detects this and lights it up in place of the other filament that is not broken. The headlight disconnection compensation circuit includes a headlight disconnection detection circuit provided for each high beam filament and low beam filament, which detects disconnection by comparing the headlight lighting signal with a reference voltage, and an output signal of the disconnection detection circuit. a control circuit that determines which filament is on the broken side of the headlamp from the output signal of the lighting switch; a headlamp drive circuit that supplies current to the filament on the non-broken side based on the output from the control circuit; An alarm circuit that is driven by the output of the circuit and notifies the disconnection state of the headlight, and the output signal of the disconnection detection circuit and the lighting output signal of the lighting switch are input, and alternative lighting is performed using either the high beam filament or the low beam filament. 1. A disconnection compensation circuit for an automobile headlamp, comprising: an alternative display circuit for informing a driver of whether a vehicle headlamp is being operated.