JPH0443898U

JPH0443898U -

Info

Publication number: JPH0443898U
Application number: JP8593090U
Authority: JP
Priority date: 1990-08-15
Filing date: 1990-08-15
Publication date: 1992-04-14

Description

[Brief explanation of the drawing]

第１図乃至第６図は本考案車載警光灯の点滅回
路の実施の一例を示すものであり、第１図は電球
点灯回路の構成を示す回路図、第２図はＦＥＴの
入力段における等価回路を示すものであり、Ａは
制御パルスの立ち上がり時における等価回路図、
Ｂは制御パルスの立ち下がり時における等価回路
図、第３図は各部の信号波形を概略的に示す波形
図、第４図は車載警光灯の一部を切欠いて示す正
面図、第５図は回転灯の構造を概略的に示すもの
であり、Ａは斜視図、Ｂは底面図、第６図はコン
トロール回路の概要を示す回路ブロツク図、第７
図は従来の電球点灯回路の一例を示す回路図、第
８図は問題点を説明するための概略波形図である
。符号の説明、１……車載警光灯、９……電球、
２３，２４……点滅回路、３２，３３，３５……
エツジ緩和手段。 Figures 1 to 6 show an example of the implementation of the blinking circuit of the in-vehicle warning light of the present invention. It shows an equivalent circuit, where A is the equivalent circuit diagram at the rise of the control pulse,
B is an equivalent circuit diagram at the falling edge of the control pulse, FIG. 3 is a waveform diagram schematically showing the signal waveforms of each part, FIG. 4 is a partially cutaway front view of the vehicle-mounted warning light, and FIG. 5 6 schematically shows the structure of the revolving light, A is a perspective view, B is a bottom view, FIG. 6 is a circuit block diagram showing an overview of the control circuit, and FIG.
The figure is a circuit diagram showing an example of a conventional light bulb lighting circuit, and FIG. 8 is a schematic waveform diagram for explaining the problem. Explanation of symbols, 1... Car warning light, 9... Light bulb,
23, 24... Flashing circuit, 32, 33, 35...
edge mitigation measures.

Claims

[Scope of Claim for Utility Model Registration] A flashing circuit for a vehicle-mounted warning light that performs a flashing operation on a light bulb by supplying the light bulb with a pulse current corresponding to the input of a rectangular waveform control pulse, the circuit comprising: Or, a flashing circuit for a vehicle-mounted warning light, characterized in that it is provided with edge mitigation means that performs waveform manipulation on the control pulse so that the slope at the time of falling becomes gentle.