| US 7,586,250 B2 | ||
| Lamp having an arc tube protected from breakage | ||
| Shiro Iida, Kyoto (Japan); Kouhei Iwase, Takatsuki (Japan); and Yoshinori Kakuno, Katano (Japan) | ||
| Assigned to Panasonic Corporation, Osaka (Japan) | ||
| Filed on Jun. 30, 2005, as Appl. No. 11/172,030. | ||
| Claims priority of application No. 2004-203954 (JP), filed on Jul. 09, 2004; and application No. 2005-034894 (JP), filed on Feb. 10, 2005. | ||
| Prior Publication US 2006/0006781 A1, Jan. 12, 2006 | ||
| Int. Cl. H01J 5/48 (2006.01); H01J 5/50 (2006.01); H01J 5/00 (2006.01) | ||
| U.S. Cl. 313—318.02 [313/318.01; 313/493; 313/634] | 20 Claims |
| 1. A lamp comprising:
an arc tube including a pair of electrodes respectively at both tube ends defining, between the pair of electrodes, a discharge
path which turns in a double spiral substantially on one plane having a gap, Ge, on said plane between adjacent turns in a
spiraled portion of the arc tube; and
a holder for holding only both tube ends and a tube center of the arc tube, in a state where (i) ends of the holder are bonded
to (i) the tube ends of the arc tube and (ii) a center part of the holder is bonded to the tube center of the arc tube, using
an adhesive.
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