Dischanrge lamp with outer electrodes on a printed circuit board
A lighting system has a discharge lamp ( 2 ), and an associated electronic ballast ( 1 ), a printed circuit board ( 3 ) on one side bearing outer electrodes for the discharge vessel ( 5, 6, 7 ) and on the other side being used for mounting the ballast ( 1 ).
1 . A lighting system having
a discharge lamp with electrodes positioned on the outside on a discharge vessel,
and an electronic ballast for the electrical supply to the discharge lamp which is connected to the electrodes,
wherein the electrodes are conductor tracks on a printed circuit board, which is fitted to the discharge vessel, and the electronic ballast is mounted on the same printed circuit board.
2 . The lighting system as claimed in claim 1 , in which the printed circuit board is fitted to the discharge vessel by means of adhesive bonding.
3 . The lighting system as claimed in claim 1 , in which an electrically conductive interlayer is provided between the electrodes on the printed circuit board and the discharge vessel.
4 . The lighting system as claimed in claim 1 , in which the discharge vessel is in the form of a flat radiator.
5 . The lighting system as claimed in claim 1 , in which the discharge vessel and the printed circuit board are connected via clips.
6 . The lighting system as claimed in claim 5 , in which a flat device, in particular a diffuser or an EMC shield, is fitted on the light-emitting side of the discharge vessel and is connected to the discharge vessel via clips.
7 . The lighting system as claimed in claim 1 , in which the printed circuit board is rigid and is in the form of a mechanical holder for the electronic ballast.
8 . The lighting system as claimed in claim 1 , in which electronic components of the electronic ballast are mounted on the printed circuit board.
9 . The lighting system as claimed in claim 8 , in which the printed circuit board is flexible.
10 . The lighting system as claimed in claim 1 , in which a metallic cooling face for cooling the printed circuit board and the discharge vessel is provided on a side of the printed circuit board which faces away from the discharge vessel.
11 . The lighting system as claimed in claim 10 , in which a cooling plate, which is spaced apart from the printed circuit board, is provided as the cooling face.
12 . The lighting system as claimed in claim 2 , in which the printed circuit board is rigid and is in the form of a mechanical holder for the electronic ballast.
13 . The lighting system as claimed in claim 3 , in which the printed circuit board is rigid and is in the form of a mechanical holder for the electronic ballast.
14 . The lighting system as claimed in claim 4 , in which the printed circuit board is rigid and is in the form of a mechanical holder for the electronic ballast.
15 . The lighting system as claimed in claim 5 , in which the printed circuit board is rigid and is in the form of a mechanical holder for the electronic ballast.
16 . The lighting system as claimed in claim 6 , in which the printed circuit board is rigid and is in the form of a mechanical holder for the electronic ballast.