Patent ID: 6919687
Filing Date: 2005-07-19
Classification: H01J,H01R,H05B,Y02B

Abstract:
1. A high-voltage discharge lamp lighting apparatus comprising: lighting means comprising a stabilizer and an ignitor circuit comprising an oscillating circuit-for-driving and a high-voltage pulse generating transformer, said stabilizer supplying a power voltage for maintaining the lighting operation to a high-voltage discharge lamp, said oscillating circuit-for-driving generating a start pulse at the time of starting the lighting operation of said high-voltage discharge lamp, said high-voltage pulse generating transformer increasing a voltage of the start pulse; cap means which mounts and holds said high-voltage discharge lamp thereon, said cap means including a magnetic core and a secondary coil which constitute said high-voltage pulse generating transformer of said ignitor circuit; and socket means to which said cap means is fitted and attached, said socket means including at least said oscillating circuit-for-driving of said ignitor circuit and a primary coil of said high-voltage pulse generating transformer, which is a component not included in said cap means, wherein the operation for fitting and attaching said cap means to said socket means causes said high-voltage pulse generating transformer to function, said socket means has a fitting and attaching portion which is made of a cylindrical member, and two connecting pieces connected to two output terminals of said stabilizer and disposed apart from each other in the axial direction on the inner circumferential surface of the cylindrical member, and said cap means has a fitting and attaching portion which is formed of a cylindrical member capable of being fitted to the inner circumference of the cylindrical member of said socket means, and first and second contacts being capable of contacting with the two connecting pieces of said socket means and disposed in ring shapes apart from each other in the axial direction on the outer circumferential surface of the cylindrical member of said cap means, the first contact being connected to one electrode of said high-voltage discharge lamp, the second contact being connected to a terminal end extended from the other electrode of said high-voltage discharge lamp via the secondary coil of said high-voltage pulse generating transformer.