JPS617898U - discharge lamp lighting device - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Brief explanation of the drawing]

Figure 1 is a circuit diagram of the first embodiment of this invention, Figure 2 is a detailed circuit diagram of its main parts, Figure 3 is a timing diagram of each part, and Figure 4 is a second embodiment of this invention. Main part circuit diagram, 5th
The figure is a circuit diagram of a main part of the third embodiment of this invention, FIG. 6 is a circuit diagram of a main part of a fourth embodiment of this invention, and FIG. 7 is a circuit diagram of a main part of a fifth embodiment of this invention. Figure 8 is the sixth figure of this invention.
FIG. 9 is a circuit diagram of a conventional discharge lamp lighting device, FIG. 10 is a circuit diagram of a proposed example, and FIG. 11 is a configuration diagram of a switch. OT...Oscillation transformer (output transformer), S1, 81
'...Dimmer switch, S2...Preheating switch, CH
2... Current limiting choke coil, CT... Current transformer for preheating, L... Discharge lamp, f f2... Filament, T
... Control direction.

Claims (1)

[Claims for Utility Model Registration] (1) A discharge lamp, a leakage-type output transformer that supplies power to the discharge lamp, and a regulator connected in relation to the output transformer and the discharge lamp that dims the discharge lamp in stages. an optical switch; and a switch connected to short-circuit a part of the secondary winding of the output transformer, and the switch closes immediately before or simultaneously with the opening of the dimmer switch. A discharge lamp device, wherein the dimmer switch and the opening/closing timing of the switch are set so that the switch opens after the opening of the switch is completed. (2) The switch is connected between one end of the secondary winding of the output transformer and an intermediate tap via one filament of the discharge lamp and the primary winding of the preheating current transformer, and Utility model registration claim No. 1, in which the secondary winding of the flow device is connected to the other filament of the discharge lamp, and the switch is closed independently for a certain period of time when the power is turned on.
) The discharge lamp lighting device described in item 2. (3) The switch is connected via the primary winding of the preheating current transformer between one end of the secondary winding of the output transformer and the intermediate tap or between two intermediate taps provided at different positions 1g, A utility model according to claim (1), wherein the secondary winding of the preheating current transformer is connected to the filament of the discharge lamp, and the switch is closed independently for two predetermined times when the power is turned on. Discharge lamp lighting device. (4) The dimmer switch is connected in parallel to a dimming current limiting element inserted between the secondary winding of the output transformer and the discharge lamp. The discharge lamp lighting device according to claim (1). (5) The dimmer switch is inserted between a secondary winding of the output transformer and the discharge lamp to switch taps of the output transformer. {6} The dimmer switch is connected between both ends of the discharge lamp via a dimmer shunt element. A discharge lamp lighting device according to claim (1) of the utility model registration claim.