High-pressure discharge lamp having a starting aid
The invention relates to a high-pressure discharge lamp ( 1 ) having a burner ( 2 ), which is provided with a starting aid device ( 30, 32 ) for improving the starting behavior. Said device is configured according to the invention as a grid ( 30 ) encompassing the burner in the region of a ceramic ( 6 ) holding the burner ( 2 ) and having contact with a power feed ( 24 ). Said grid ( 30 ) acts as a starting aid and as protection against fragments in case of a burner explosion.
1. A high-pressure discharge lamp ( 1 ) with a burner ( 2 ), which has a discharge vessel ( 10 ) with shafts ( 12 , 14 ) arranged diametrically thereon and in which two mutually spaced-apart electrodes ( 16 , 18 ) are accommodated, which are connected to power supply lines ( 24 , 26 ) via sealing foils ( 20 , 22 ) fused into the shafts ( 12 , 14 ), an auxiliary starting device ( 30 , 32 ) engaging around a section of a shaft ( 14 ) with an auxiliary starting bubble ( 28 ) and interacting with one of the electrodes ( 14 ) as starting aid, the burner ( 2 ) being held on a ceramic ( 6 ), characterized in that the auxiliary starting device ( 30 , 32 ) is arranged in the region of the ceramic ( 6 ) as protection against shattering and the auxiliary starting device has a grating ( 30 ).
2. The high-pressure discharge lamp as claimed in claim 1 , the burner ( 2 ) being inserted into a reflector ( 4 ), which is likewise held on the ceramic ( 6 ).
3. The high-pressure discharge lamp as claimed in claim 1 , the grating ( 30 ) being inserted into the ceramic ( 6 ).
4. The high-pressure discharge lamp as claimed in claim 1 , contact being made between the grating ( 30 ) and one of the power supply lines ( 24 , 26 ).
5. The high-pressure discharge lamp as claimed in claim 1 or 2 , said lamp being a mercury ultra-high-pressure lamp.
6. The high-pressure discharge lamp as claimed in claim 1 or 2 said lamp being a high-pressure discharge lamp.
7. The high-pressure discharge lamp as claimed in claim 2 , the grating ( 30 ) being clamped or inserted, with prestress, into a through-bore ( 34 ) of the ceramic ( 6 ).
8. The high-pressure discharge lamp as claimed in claim 2 , the grating ( 30 ) being designed to be approximately in the form of a cylinder casing.
9. The high-pressure discharge lamp as claimed in claim 3 , the power supply line ( 26 ) being passed through a reflector neck ( 48 ).
10. The high-pressure discharge lamp as claimed in claim 4 , the power supply line ( 26 ) being passed laterally through the reflector ( 4 ).