High pressure discharge lamp with a capacitive starting aid

• US 8,227,990 B2
• Filed: 09/14/2010
• Issued: 07/24/2012
• Est. Priority Date: 09/30/2009
• Status: Active Grant

• Current Assignee: LEDVANCE GmbH (MLS Co. Ltd.)
• Original Assignee: OSRAM Licht AG (Ams-Osram AG)
• Inventors: Buttstaedt, Johannes, Dunkel, Stefan, Grabinski, Leon, Hentschel, Janbernd, Tueshaus, Martin
• Primary Examiner(s): Patel, Vip
• Application Number:
  US12/881,191
• Publication Number:
  US 20110074285A1
• Time in Patent Office: 679 Days
• Field of Search: 313/594, 313/623, 313/624
• US Class Current: 313/623
• CPC Class Codes: H01J 61/547 using an auxiliary electrode outside the vessel H01J61/544 takes precedence

Abstract

A high pressure discharge lamp with a capacitive starting aid is provided. The high pressure discharge lamp may include an outer bulb; a discharge vessel that is accommodated in the outer bulb, the discharge vessel comprising at least one end with a seal in which an electrode system is fastened; a frame holding the discharge vessel in the outer bulb; and a starting aid fastened on the seal. The starting aid may have two functional parts.

Claims

1. A high pressure discharge lamp with a capacitive starting aid, the high pressure discharge lamp comprising:

a discharge vessel that is accommodated in an outer bulb, wherein the discharge vessel has two ends provided with seals, in which electrodes are fastened;

a frame holding the discharge vessel in the outer bulb;

a starting aid fastened on the seals;

wherein the starting aid comprises two clips, respectively attached at each of said seals and an electric line connected between the clips.

2. The high pressure discharge lamp as claimed in claim 1, wherein the electric line comprises a wire.

3. The high pressure discharge lamp as claimed in claim 2, wherein the clips on the seals are symmetrically fashioned or asymmetrically fashioned.

4. The high pressure discharge lamp as claimed in claim 3, wherein the clips on the seals are symmetrically fashioned or asymmetrically fashioned with a different width of the clip.

5. The high pressure discharge lamp as claimed in claim 2, wherein the clip is a spring sheet-metal part.

6. The high pressure discharge lamp as claimed in claim 2, wherein the discharge vessel is made from silica glass and has a metal halide fill that is substantially free of Na.

7. The high pressure discharge lamp as claimed in claim 2, wherein the seals are fused seals, which are provided with a flat for the seating of the clip.