MULTIPLE TUBE TYPE DISCHARGE LAMP, ITS LIGHTING DEVICE AND PHOTOCHEMICAL REACTION DEVICE

• Main Authors: SASAKI HIROMOTO, YASHIRO TSUGIO, SUZUKI KATSUHIKO, YONEZAWA AKIHIRO
• Format: Patent
• Language: English
• Published: 29.01.1999
• Edition: 6
• Subjects: BASIC ELECTRIC ELEMENTS; CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOIDCHEMISTRY; ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS; ELECTRICITY; PERFORMING OPERATIONS; PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL; THEIR RELEVANT APPARATUS; TRANSPORTING

PROBLEM TO BE SOLVED: To prevent damages due to thermal impacts and to reduce variation of light-emitting characteristics by providing base end parts at an upper and lower end parts in an outer enclosure tube respectively and a support member with a holding band, which has a support to support an end part of a light- emitting tube and is wound around a periphery of a small diameter part. SOLUTION: A slender tube 14 of a light-emitting tube 1 is welded in recessed parts 46, 46 of a pair of clamping members 45, 45, and the end parts of the clamping parts 45, 45 are also fixed at end rim parts 43, 43 of cover bodies 42, 42 by welding or screwing. A supporting member of the light-emitting tube 1 is structured by a flange part 41, an end rim part 43, a cover 44, a clamping member 45 and a recessed part 46. Holding bonds 7, 7 are wound around a small diameter part 12 of an end part made by making slender an outer diameter of a valve 11 of the light-emitting tube 1 from an intermediate part via cushion material such as heat resistant alumina wool 75, 75 cut in strip, and end rim parts 71, 71 of the bands 7, 7 are fixed. Thereby, even if the light- emitting tube 1 is extends by thermal expansion, loosened parts will not cause cracks in the valve 11 of the light-emitting tube 1.