Abstract:
PROBLEM TO BE SOLVED: To facilitate assembly of a green-state discharge vessel. SOLUTION: A ceramic discharge vessel in a green state includes a first discharge vessel 40 in a green state, and a second discharge vessel 42 in a green state. The first and second discharge vessels form a discharge vessel when joined together. A first removable handle 44 is temporarily and removably attached to the first discharge vessel part 40. The removable handle is installed and matched to operate the first discharge vessel part. A second removable handle 46 is temporarily and removably attached to the second discharge vessel part 42. The removable handle is installed and matched to operate the second discharge vessel part. COPYRIGHT: (C)2007,JPO&INPIT
Abstract:
PROBLEM TO BE SOLVED: To provide a quartz arc tube for a metal halide lamp and a method of making the same. SOLUTION: In the quartz arc tube 2, the internal diameter D of an electric discharge room 5 is approximately equal to [(1+P/50) 1/2 -1] in a centimeter unit, wherein P is an input power (watt), and the ratio of the internal diameter of a light-emitting length is about one. A long life quartz arc tube is thereby obtained without exceeding the maximum surface temperature of the electric discharge room which is for example the trouble point of a conventional quartz arc tube. COPYRIGHT: (C)2009,JPO&INPIT
Abstract:
PROBLEM TO BE SOLVED: To provide a robust ceramic discharge tube for a metal halide lamp. SOLUTION: The discharge tube 10 for a lamp has: a hollow ceramic body 12; and two ceramic capillary tubes 14 extended from the same side of a body. The two capillary tubes are respectively placed and adapted so as to accept each electrodes 16 extended into the body. A web 20 is provided for connecting two capillary tubes each other along the lengthwise direction of the two capillary tubes. COPYRIGHT: (C)2007,JPO&INPIT
Abstract:
PROBLEM TO BE SOLVED: To provide a long-life quartz luminous tube for a metallic halogen lamp and its manufacturing method. SOLUTION: The quartz luminous tube, designed to be column-shaped, promotes a surface temperature profile almost symmetrical in the axial direction during operation. The profile has maximum temperature of around 900 deg.C and allows a longer operation life at high average wall surface heat load.
Abstract:
PROBLEM TO BE SOLVED: To provide an arc discharge lamp in which amalgam is separated from the arc discharge environment. SOLUTION: The arc discharge lamp has an arc chamber and the arc chamber is jointed to the above arc chamber and has an amalgam tip connected to it. The connected portion is made of a narrow tubular extended portion that is brought in the amalgam tip for an interval length shorter than the depth of the amalgam tip. The amalgam that contains bismuth is contained in the amalgam tip. This composition facilitates operation of lamp at any position and the bismuth in the amalgam enters the lamp and prevents the phosphorescent substance from becoming toxic.
Abstract:
PROBLEM TO BE SOLVED: To provide a method for introducing a limited amount of mercury to an outside tube of a fluorescent lamp during manufacturing of the lamp. SOLUTION: The method comprises (a) forming the fluorescent lamp having an exhaust tube opened at a far end part, (b) exhausting the interior of the lamp outside tube through the open end of the exhaust tube, and (c) arranging a rigid body of an inactive material in the exhaust tube between a sphere retaining structure and the exhaust tube open end part. The sphere has a coating of a metal selected from silver, gold, indium and those alloys that has a selected mass across a selected surface area of the sphere, and has mercury in the coated area of the sphere, allowing a limited amount of the mercury to be retained by the metal coating for (d) sealing the open end part of the exhaust tube. COPYRIGHT: (C)2004,JPO&NCIPI
Abstract:
PROBLEM TO BE SOLVED: To provide a closed loop type tubular lamp envelope suitable for automated manufacturing and its manufacturing method. SOLUTION: A hemispherical matter 12 is formed on one side end portion 26 of a light penetration tube 10. A blister 20 is formed on the hemispherical matter 12, and a hole 26 is formed in the blister 20. A hemispherical matter is formed on the other side end portion of the light penetration tube 10. A blister is formed on the hemispherical matter, and second hole is formed in the blister. The respective formed blisters are equipped with rims regulating the respective holes. Second tube is machined into the same form. The respective rims provided on the end portions of the first tube and the second tube are mutually fused so as to form a sealed closed loop type tubular lamp envelope. By bending the respective tubes, the lamp envelope of a required shape can be provided. By forming the rims, the joining of a sealed face is guaranteed.
Abstract:
PROBLEM TO BE SOLVED: To provide a novel method for forming one piece hollow ceramic container and to provide a casting mold core and apparatus for forming a container and a method of molding to remove the core from the container which had the core formed. SOLUTION: The method of forming the ceramic container includes a step of compressing water-soluble powder, a step of hanging the compressed powder object in the casing mold, a step of injecting a ceramic molding mixture 28 to the casting mold, and a step of dissolving the compressed powder by distributing water into the container. The core for forming an arc discharge container has an electric discharge container and two fine tubes. The core includes a casting mold core 24 of the water-soluble powder having the shape of an electrical discharge chamber, and two fine tube formation pins 30 advantageously elongated from this casting mold core. The device for removing the casting core contains a water tank, advantageously circulates the water into the container and dissolves the casting mold core. COPYRIGHT: (C)2007,JPO&INPIT
Abstract:
PROBLEM TO BE SOLVED: To enable outflow of a gas in operating a lamp and flow of mercury deposition in driving a lamp, by providing an amalgam assembly including an improved exhaust tube. SOLUTION: This amalgam assembly has the exhaust tube of glass with a free end sealed; a glass bulb disposed in the exhaust tube; a mercury amalgam body disposed between the glass bulb in the exhaust tube and the sealed end of the tube; and a tube constriction part. The tube constriction part has a plurality of projection parts separated from one another and projecting toward the inside, and is so structured that the glass tube can be held on the center axis of the tube; the glass tube is concentrically locked to the projecting parts in the tube, and the gas can pass between the glass bulb and the inside surface of the tube through gaps among the projection parts. COPYRIGHT: (C)2004,JPO
Abstract:
PROBLEM TO BE SOLVED: To provide an amalgam assembly characterized by amalgam which is located in an exhaust conduit of a fluorescent lamp which is so improved as to prevent the indraft of liquid amalgam into a lamp envelope. SOLUTION: The amalgam assembly for the fluorescent lamp has a glass exhaust conduit and a holding structure located in the glass exhaust conduit. The glass exhaust conduit is extended toward a base of the lamp and its one end is usually closed at a place where it is adjacent to the base of the lamp. The holding structure is held by a narrow part of the exhaust conduit. A mercury amalgam body is located between the holding structure and the closed end of the exhaust conduit. The amalgam body has a means for wetting an inner surface of the glass exhaust conduit. When the amalgam body is liquified, the means attaches the amalgam to the inner surface of the glass exhaust conduit, thereby preventing the amalgam from passing through the holding structure and flowing into the lamp envelope. COPYRIGHT: (C)2004,JPO