JP3183884U7 - - Google Patents

Claims (17)

Molybdenum foil used for electrode mounting of high-pressure discharge lamps,
The molybdenum foil has a longitudinal direction and a lateral direction, and has a base portion and a distal end portion that extends from the base portion in the longitudinal direction to form a distal end.
The tip has a tip edge end and a tip center extending adjacent to the longitudinal direction, an outer edge of the tip edge has a knife edge shape, and the tip edge and the tip Molybdenum foil in which the thickness of the center of the tip is larger than the thickness of the edge of the tip at the boundary of the tip center. Molybdenum foil used for electrode mounting of high-pressure discharge lamps,
The molybdenum foil has a longitudinal direction and a lateral direction, and has a base portion and a distal end portion that extends from the base portion in the longitudinal direction to form a distal end.
The tip has a tip edge end and a tip center extending adjacent to the longitudinal direction, an outer edge of the tip edge has a knife edge shape, and the tip edge and the tip A molybdenum foil, wherein a thickness of the tip central portion is larger than a thickness of the tip edge end portion, and a thickness of the tip center portion is substantially the same as a thickness of the base portion at a boundary portion of the tip center portion.   The molybdenum foil according to claim 1 or 2, wherein a boundary portion between the tip center portion and the tip edge end portion is formed in parallel to the longitudinal direction.   The molybdenum foil according to claim 1 or 2, wherein the tip center portion has a tapered shape that becomes narrower toward the tip side in the longitudinal direction.   3. The molybdenum foil according to claim 1, wherein the boundary portion between the tip center portion and the tip edge end portion has a convex portion protruding in the short-side direction or a concave portion cut in the short-side direction. An electrode mount for a high-pressure discharge lamp,
Molybdenum foil according to any one of claims 1 to 5,
The electrode mount provided with the tungsten electrode welded to the said front-end | tip center part of the said molybdenum foil. An electrode mount for a high-pressure discharge lamp,
Molybdenum foil according to any one of claims 1 to 5,
A tungsten electrode welded to the center of the tip of the molybdenum foil;
An electrode mount comprising a lead wire connected to the base of the molybdenum foil. A high pressure discharge lamp,
A quartz glass arc tube having a discharge space and a sealing portion;
A high pressure discharge lamp comprising: the electrode mount according to claim 7 embedded in the sealing portion, wherein the discharge space is sealed with the molybdenum foil. A covering member for protecting a part of the molybdenum foil when manufacturing the molybdenum foil used for sealing the high-pressure discharge lamp according to any one of claims 1 to 5 ,
The covering member has a longitudinal direction and a short direction, a covering base portion that covers the base portion of the molybdenum foil, and a tip extending from the covering base portion in the longitudinal direction to form a tip, and shorter than the covering base portion. side direction rather small, covering member having a covering tip that covers the central end portion of the molybdenum foil. A covering member for protecting a part of the molybdenum foil when manufacturing the molybdenum foil used for sealing the high-pressure discharge lamp according to claim 3 ,
The covering member has a longitudinal direction and a short direction, a covering base portion that covers the base portion of the molybdenum foil, and a tip extending from the covering base portion in the longitudinal direction to form a tip, and shorter than the covering base portion. side direction rather small, the and a covering tip that covers the central end portion of the molybdenum foil, the coating tip, covering member having a uniform shape with respect to the longitudinal direction. A covering member for protecting a part of the molybdenum foil when manufacturing the molybdenum foil used for sealing the high-pressure discharge lamp according to claim 4 ,
The covering member has a longitudinal direction and a short direction, a covering base portion that covers the base portion of the molybdenum foil, and a tip extending from the covering base portion in the longitudinal direction to form a tip, and shorter than the covering base portion. side direction rather small, the and a covering tip that covers the central end portion of the molybdenum foil, the coating tip, covering member having a narrowing tapered shape toward the tip end side with respect to the longitudinal direction. A covering member for protecting a part of the molybdenum foil when manufacturing the molybdenum foil used for sealing the high-pressure discharge lamp according to claim 5 ,
The covering member has a longitudinal direction and a short direction, a covering base portion that covers the base portion of the molybdenum foil, and a tip extending from the covering base portion in the longitudinal direction to form a tip, and shorter than the covering base portion. side direction rather small, the and a covering tip that covers the central end portion of the molybdenum foil, the recess in which the tip was cut said the convex portion or the lateral direction to protrude in the lateral direction A covering member.   The covering member according to any one of claims 9 to 12, comprising a material that is hardly soluble in an acidic solution.   The covering member according to claim 13, which is made of a material that is hardly soluble in an acidic solution containing phosphoric acid.   The covering member according to claim 14 which consists of nonmetallic materials.   The covering member according to claim 15 which consists of resin.   The covering member according to claim 16, comprising one or more materials selected from the group consisting of a fluororesin, a vinyl chloride resin, and a xylene resin.