Discharge lamp with secondary ignition electrode
First Claim
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1. A discharge lamp arrangement comprising:
- a lamp tube in which a noble gas is contained;
two internal electrodes disposed in the lamp tube;
a secondary ignition electrode disposed outside the lamp tube and running along the lamp tube close to a surface thereof; and
at least one stud disposed on the lamp tube, wherein the at least one stud extends away from the surface of the lamp tube and has a remote end which is thicker than a root at the surface of the lamp tube and wherein the secondary ignition electrode is wound at least once around the root of the at least one stud.
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Abstract
A discharge lamp includes a lamp tube containing a noble gas, two internal electrodes, and a secondary electrode disposed outside and close to the surface of the lamp tube. In one embodiment, studs are disposed on the lamp tube so as to affix the secondary electrode. In an alternate embodiment, a reflector includes an indentation pointing toward the lamp tube and configured as the secondary ignition wire.
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Citations
9 Claims
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1. A discharge lamp arrangement comprising:
- a lamp tube in which a noble gas is contained;
two internal electrodes disposed in the lamp tube;
a secondary ignition electrode disposed outside the lamp tube and running along the lamp tube close to a surface thereof; and
at least one stud disposed on the lamp tube, wherein the at least one stud extends away from the surface of the lamp tube and has a remote end which is thicker than a root at the surface of the lamp tube and wherein the secondary ignition electrode is wound at least once around the root of the at least one stud. - View Dependent Claims (2)
- a lamp tube in which a noble gas is contained;
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3. A discharge lamp arrangement comprising:
- a lamp tube in which a noble gas is contained;
two internal electrodes disposed in the lamp tube;
a secondary ignition electrode disposed outside the lamp tube and running along the lamp tube close to a surface thereof; and
pairs of studs disposed on the lamp tube and wherein each pair has one stud disposed on either side of the secondary ignition electrode. - View Dependent Claims (4)
- a lamp tube in which a noble gas is contained;
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5. A discharge lamp arrangement comprising:
- a lamp tube in which a noble gas is contained;
two internal electrodes disposed in the lamp tube;
a secondary ignition electrode disposed outside the lamp tube and running along the lamp tube close to a surface thereof;
a lamp housing for the lamp tube and comprising a reflector extending along the length of the lamp tube; and
wherein the reflector has a metal portion disposed outside the lamp tube and running along the lamp tube close to the surface thereof with an indentation pointing toward the lamp tube and configured as the secondary ignition electrode. - View Dependent Claims (6, 7, 8, 9)
- a lamp tube in which a noble gas is contained;
Specification