Lighting apparatus for discharge lamp

Abstract

An embodiment of a discharge lamp lighting apparatus of the present invention includes a socket inserted with a discharge bulb, a transformer having a coil including a secondary side winding connected at one end to the socket, connected at the other end to a first drive wire, and a primary side winding connected at one end to a second drive wire, connected at the other end to a third drive wire through a discharge gap, a core inserted into the coil, and a resin filled between the core and the primary side winding, the secondary side winding, and a capacitor connected between the second drive wire and the third drive wire, wherein the transformer and the socket are aligned side by side.

Description

[0001] Cross-references for applications [0002] This application is based on the benefit of priority of Japanese Patent Application No. 2004-139895 filed on May 10, 2004 and Japanese Patent Application No. 2005-115977 filed on April 13, 2005. The contents of the Japanese application are cited here and incorporated into this description. field of invention [0003] The present invention relates to a lighting device for a discharge lamp whose depth and thickness are desired to be small, such as automobile headlights. Background technique [0004] In recent years, high luminance discharge lamps have been used in automobile headlights and the like. When high-intensity discharge lamps are used in automobile headlights, it is desirable that the thickness from the lamp holder of the discharge lamp in the depth direction be small in order to ensure space in the engine room. [0005] However, in a high-intensity discharge lamp, the lamp holder of the discharge lamp is generally c...

AI Technical Summary

Problems solved by technology

[0007] However, in doing so, the bulb of the discharge lamp exists in the direction in which the driving wires are drawn out, and therefore the drawn out driving wires need to be greatly bent, which poses problems in terms of operability and durability.

Moreover, when the igniter uses a commonly used transformer, the voltage generated by the secondary coil may cause surface discharge or corona discharge in the coil, which naturally limits the power supplied to the bulb of the discharge lamp.

Therefore, high voltage cannot be applied to the discharge lamp, and there is a problem that the discharge lamp cannot be easily and quickly turned on.

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