JPS6129500U

JPS6129500U - discharge lamp lighting device

Info

Publication number: JPS6129500U
Application number: JP11381684U
Authority: JP
Inventors: 智彦大野
Original assignee: 三菱電機株式会社
Priority date: 1984-07-26
Filing date: 1984-07-26
Publication date: 1986-02-21

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図は従来のラピッドスタート形段調光用放電灯点灯
装置を示す回路図、第２図はこの考案の一実施例を示す
回路図である。図において、２は単巻漏洩変圧器、３はそれの一次巻線
、４は二次巻線、５は進相用コンデンサ、７は放電灯、
８，９はそれのフィ′ラメント、１０．１１はフィラメ
ント加熱巻線、１２は段調光用インピーダンス、１５は
全光・段調光切換え用短絡スイッチ、１６．１７は漏洩
変圧器二次巻線４側に設けられたフィラメント加熱巻線
、１８，１９は切換えスイッチである。図中同一符号は同一或は相当部分を示す。FIG. 1 is a circuit diagram showing a conventional rapid start type stage dimming discharge lamp lighting device, and FIG. 2 is a circuit diagram showing an embodiment of this invention. In the figure, 2 is a leaky autotransformer, 3 is its primary winding, 4 is its secondary winding, 5 is a phase advance capacitor, 7 is a discharge lamp,
8 and 9 are their filaments, 10 and 11 are filament heating windings, 12 is an impedance for stage dimming, 15 is a short circuit switch for switching between full light and stage dimming, and 16 and 17 are leakage transformer secondary windings. The filament heating windings 18 and 19 provided on the wire 4 side are changeover switches. The same reference numerals in the figures indicate the same or corresponding parts.

Claims

[Scope of utility model registration request]

Inserting a parallel circuit of a stage dimming impedance and a short-circuit switch for switching between full light and stage dimming into a series circuit of a single-turn leakage transformer with magnetic saturation characteristics, a phase advance capacitor, and a discharge lamp,
In the discharge lamp lighting device comprising the single-turn leaky transformer and the filament heating winding of the discharge lamp, a set of the filament heating windings is wound around the primary winding side core of the single-turn leaky transformer. In addition, one set of filament heating windings is wound around the secondary winding side iron core of this transformer, and a changeover switch is provided to switch and connect these two sets of heating windings to the filament of the discharge lamp. , for said stage dimming, said changeover switch so that when a short circuit occurs due to said switch of said impedance, said heating winding wound around said primary winding side iron core of said single-turn leaky transformer is connected to said filament of said discharge lamp. A discharge lamp lighting device characterized in that the switching of the contacts is made to respond to the opening and closing of the contacts of the short-circuit switch for switching between full light and step dimming.