JPS6084458U

JPS6084458U - Power supply circuit for headlight

Info

Publication number: JPS6084458U
Application number: JP17892883U
Authority: JP
Inventors: 新開　広明
Original assignee: トヨタ自動車株式会社
Priority date: 1983-11-18
Filing date: 1983-11-18
Publication date: 1985-06-11

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 drawings]

第１図はこの考案に係るヘッドライト用電源回路の一実
施例を示す回路図、第２図は同実施例における点燈時の
照度の時間的変化を示すグラフ、第３図は従来例におけ
る点燈時の照度の時間的変化を示すグラフである。ａ・・・ａ接点、ｂ・・・ｂ接点、ＣＯ・・・コンデン
サ、Ｃ１・・・点燈回路、Ｃ２・・・電源回路、Ｃ３・
・・スイッチ回路、Ｃ４・・・抵抗回路、Ｌｌ・・・放
電燈、Ｒ２・・・白熱燈、Ｒ１・・・固定抵抗、Ｒ２・
・・可変抵抗、５Ｗ１ｔ　ＳＷ２・・・ライトコントロ
ールスイッチ。Fig. 1 is a circuit diagram showing an embodiment of the power supply circuit for headlights according to this invention, Fig. 2 is a graph showing temporal changes in illuminance when the lights are turned on in the same embodiment, and Fig. 3 is a diagram showing a conventional example. It is a graph showing a temporal change in illuminance when the light is turned on. a...A contact, b...b contact, CO...capacitor, C1...lighting circuit, C2...power supply circuit, C3...
...Switch circuit, C4...Resistance circuit, Ll...Discharge light, R2...Incandescent light, R1...Fixed resistance, R2...
...Variable resistance, 5W1t SW2...Light control switch.

Claims

[Scope of utility model registration request]

In a headlight power supply circuit for a headlight having an incandescent lamp and a discharge lamp, an A contact interposed between the incandescent lamp and a battery, and a B contact interposed between the A contact and the battery. and a capacitor connected to a battery in parallel with the incandescent lamp between the B contact and the A contact, and an excitation coil that is excited when the discharge lamp is turned on and operates the A contact and the B contact. Power supply circuit for headlights.