公开(公告)号：US20010038267A1

公开(公告)日：2001-11-08

申请号：US09844321

申请日：2001-04-27

Inventor： Shunsuke Ono ,  Yoshiki Kitahara ,  Haruo Nagai

IPC: H01J009/44 ,  H01J061/073

CPC classification number: H05B41/2928 ,  H01J61/0732 ,  H01J61/822 ,  H01J61/86 ,  Y02B20/208

Abstract: A high pressure discharge lamp having a pair of electrodes with a space of 0.5 mm to 2.0 mm inclusive between them and disposed in an arc tube. An electrical discharge takes place between the electrodes. Each of the electrodes has an electrode rod and a head that is provided at the discharge side end of the electrode rod and having a larger diameter than the electrode rod. A surface of the head being opposite to the other electrode is convexly curved and a protruding part is formed in the vicinity of the center portion of the end of the head.

Abstract translation: 一种高压放电灯，具有一对电极，它们之间具有0.5mm至2.0mm的空间，并且设置在电弧管中。 在电极之间发生放电。 每个电极具有设置在电极棒的放电侧端部并且具有比电极棒更大的直径的电极棒和头部。 与另一个电极相对的头部的表面是凸形弯曲的，并且在头部的端部的中心部分附近形成有突出部分。

公开(公告)号：US20030020403A1

公开(公告)日：2003-01-30

申请号：US10089687

申请日：2002-04-03

Inventor： Keisuke Okubo ,  Mitsuru Ikeuchi ,  Shoji Miyanaga

IPC: H01J061/04 ,  H01J061/073

CPC classification number: H01J61/0732 ,  H01J61/86

Abstract: (Object) The object of the invention is to improve the thermal radiation characteristic of the electrodes in a high pressure discharge lamp of the short arc type in which the input power has been increased in order to increase the amount of radiant light, and to reduce the electrode temperature with high efficiency. (Arrangement) The object is achieved as claimed in the invention in a high pressure discharge lamp of the short arc type in the emission tube of which there is a pair of electrodes, in that at least part of the sides of the above described electrodes is provided with a groove area, that the depth D of this groove area is within 12% of the electrode diameter and that the relation D/P is between the depth D of the groove area and the pitch P between the grooves is greater than or equal to 2.

Abstract translation: （目的）本发明的目的在于提高输入功率增加的短弧型高压放电灯中的电极的热辐射特性，以增加辐射光量，并且减少 电极温度效率高。 （排列）根据本发明，在具有一对电极的发射管中的短弧型高压放电灯中实现上述目的，其中上述电极的至少一部分侧面是 设置有沟槽区域，该沟槽区域的深度D在电极直径的12％内，并且关系D / P在沟槽区域的深度D和沟槽之间的间距P之间的距离大于或等于 到2。