公开(公告)号：US3543070A

公开(公告)日：1970-11-24

申请号：US3543070D

申请日：1968-04-08

Applicant: USHIO ELECTRIC INC

Inventor： NAKAMURA YOSHIHIKO ,  OHNISHI YASUO ,  SHIMIZU YASUHIRO

IPC: H01J61/52 ,  H01J61/98 ,  H01J5/56 ,  H01J7/26

CPC classification number: H01J61/526 ,  H01J61/98

公开(公告)号：US3521103A

公开(公告)日：1970-07-21

申请号：US3521103D

申请日：1968-04-08

Applicant: USHIO ELECTRIC INC

Inventor： NAKAMURA YOSHIHIKO ,  OHNISHI YASUO ,  SHIMIZU YASUHIRO

IPC: H01J61/52 ,  H01J1/42 ,  H01J61/06 ,  H01J61/84

CPC classification number: H01J61/526

公开(公告)号：US3604968A

公开(公告)日：1971-09-14

申请号：US3604968D

申请日：1969-06-27

Applicant: USHIO ELECTRIC INC

Inventor： SHIMIZU YASUHIRO ,  NAKAMURA YOSHIHIKO

IPC: H01J61/073 ,  H01J61/52

CPC classification number: H01J61/526

Abstract: A high pressure discharge lamp of the cooled electrode type comprising electrodes, an envelope sealing portion for said electrodes and said envelope, and a cooling liquid inlet passage and a cooling liquid outlet passage formed in the interior of at least one of said electrodes for introducing a cooling liquid into same discharging same therefrom. An indented or grooved portion and bulkheads are provided so as to form a snaky cooling liquid passage in the interior of the forward end portion of said electrode for increasing the area for dissipating heat from the electrode and for increasing mechanical strength of the forward end portion of said electrode.