公开(公告)号：DE10231258A1

公开(公告)日：2004-01-22

申请号：DE10231258

申请日：2002-07-11

Applicant: PHILIPS INTELLECTUAL PROPERTY

Inventor： POLLMANN-RETSCH JENS ,  MOENCH HOLGER ,  MAES WOUTER ,  VERSTRAETEN EDMOND M E

IPC: H01J61/52 ,  H01J61/86 ,  H01J61/35

Abstract: A discharge lamp, and particularly a high-pressure gas-discharge lamp (an HID (high-intensity discharge) lamp or UHP (ultra-high performance) lamp), having a reflector and a cooling means is described. The cooling means comprises at least one nozzle ( 3 ) by which a flow of gas can be directed onto the discharge lamp, the at least one nozzle ( 3 ) being so arranged that it does not extend, at least to any substantial degree, into a beam path produced by the lamp ( 2 ) and the reflector ( 1 ). In this way, the cooling means does not produce any obstacles on the beam path for the light. With preferred embodiments, it is possible to produce a turbulent flow that surrounds particularly the discharge vessel ( 21 ) of the lamp and that considerably increases the effectiveness of the cooling means. Further embodiments also allow the discharge lamp to be operated in a plurality of different positions without individual regions of the lamp being too little or too severely cooled.