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1. 发明专利

JP2000331647A HIGH PRESSURE VAPOR DISCHARGE LAMP 失效
公开(公告)号：JP2000331647A
公开(公告)日：2000-11-30
申请号：JP14339299
申请日：1999-05-24
申请人： MATSUSHITA ELECTRONICS CORP
发明人： NISHIURA YOSHIHARU , YAMAMOTO TAKASHI , TAKEDA KAZUO , NAKAYAMA FUMINORI , NOHARA KOJI
IPC分类号： H01J61/073 , H01J61/82 , H01J61/88
摘要： PROBLEM TO BE SOLVED: To provide a high pressure vapor discharge lamp having an excellent long life characteristic, and outstandingly reducing a variation in the long life characteristic among the lamps. SOLUTION: An outer tube has an arc tube 1 inside. At least a pair of electrodes 8 are provided inside the arc tube 1. At least mercury is sealed inside the arc tube 1. The electrodes 8 comprise an electrode pin 12 and one or more types of metal pipes 13 surrounding the electrode pin 12. A contact area between the electrode pin 12 and the inner surface of the metal pipe 13 is maintained sufficiently stably, thereby sufficiently reducing the temperature at a tip of the electrode pin without a variation.

2. 发明专利

JPH10172513A HIGH-PRESSURE DISCHARGE LAMP 失效
公开(公告)号：JPH10172513A
公开(公告)日：1998-06-26
申请号：JP32811396
申请日：1996-12-09
申请人： MATSUSHITA ELECTRONICS CORP
发明人： NAKAYAMA FUMINORI , NOHARA KOJI , YAMAMOTO TAKASHI
IPC分类号： H01J61/36
摘要： PROBLEM TO BE SOLVED: To provide a high-pressure discharge lamp having enhanced reliability of a sealed portion and stable lifetime characteristics. SOLUTION: A light emitting tube 1 encloses therein mercury, argon and metal halide. In the light emitting tube 1, a main tube 6 is provided at both ends thereof with fine tubes 7, into each of which an introducing-in structure 9 having an electrode coil 5 at the tip is inserted. The introducing-in structure 9 is enclosed inside the fine tube 7 via a sealant 10 in such a manner that the electrode coil 5 is positioned inside the main tube 6. In the introducing-in structure 9, one end of a niobium rod 13 is inserted into and connected to one end of a conductive coil 14, while a tungsten rod 15 serving as the electrode 5 is inserted into and connected to the other end of conductive coil 14. A hollow portion 16 is defined between the niobium rod 13 and the tungsten rod 15 inside the coil 14. The sealant 10 flows in the hollow portion 16, and covers the niobium rod 13 inside the fine tube 7.

3. 发明专利

JPH10283996A HIGH PRESSURE METALLIC VAPOR DISCHARGE LAMP 失效
公开(公告)号：JPH10283996A
公开(公告)日：1998-10-23
申请号：JP9067297
申请日：1997-04-09
申请人： MATSUSHITA ELECTRONICS CORP
发明人： YAMAMOTO TAKASHI , NAKAYAMA FUMINORI , NOHARA KOJI , NISHIURA YOSHIHARU , TAKEDA KAZUO , SUGIMOTO KOICHI
IPC分类号： H01J61/32
摘要： PROBLEM TO BE SOLVED: To provide a high pressure metallic vapor discharge lamp having a ceramic emission tube with taper portions and capable of reducing changes in characteristic with the fluctuation of its lighting direction. SOLUTION: This lamp has a first cylinder portion 11, taper portions 12 joined to both ends of the first cylinder portion 11, and second cylinder portions 17a, 17b smaller than the bore of the first cylinder portion 11, at the ends of the taper portions 12. The lamp has an emission tube 1 made of ceramics, inside which electrode shafts 14a, 14b are secured to the second cylinder portions 17a, 17b in such a way that electrode coils 13a, 13b are located inside the emission tube 1. The angle α between the surface of the taper portion 12 inside the emission tube 1 and each electrode shaft 14a, 14b is 50 to 80 degrees, and the ratio of the length L(mm) of the first cylinder portion 11 to the bore D(mm) of the first cylinder portion 11 is -0.014α+1.4

4. 发明专利

JP2000113859A METAL VAPOR DISCHARGE LAMP 失效
公开(公告)号：JP2000113859A
公开(公告)日：2000-04-21
申请号：JP36921098
申请日：1998-12-25
申请人： MATSUSHITA ELECTRONICS CORP
发明人： NOHARA KOJI , NISHIURA YOSHIHARU , SUGIMOTO KOICHI , KAKISAKA SHUNSUKE , TAKEDA KAZUO , AKIYOSHI KENJI , NAKAYAMA FUMINORI , YAMAMOTO TAKASHI
IPC分类号： H01J61/12 , H01J61/36 , H01J61/88
摘要： PROBLEM TO BE SOLVED: To provide a high-reliability seal section having a stable optical characteristic during its life, improve luminous efficiency and improve a luminous flux build-up characteristic in the initial stage of lighting. SOLUTION: This metal vapor discharge lamp is provided with an arc tube 1 made of a translucent ceramic, an outer tube 2 surrounding the arc tube 1, and metal wires 3a, 3b fixing the arc tube 1 in the outer tube 2. Nitrogen with the prescribed pressure is sealed in the outer tube 2. The arc tube 1 is provided with a main tube section 5 and fine tube sections 6 provided at both ends of the main tube section 5. A conductive cermet 7 is inserted into each fine tube section 6, and the fine tube section 6 is sealed by glass frit 8. The frit 8 is poured into the gap between the inner face of the fine tube section 6 and the outer face of the conductive cermet 7 until the distance L between the discharge space side end face of the frit 8 and a discharge space end face becomes 7 mm. The temperature on the discharge space side end face of the frit 8 is 800 deg.C at maximum.

5. 发明专利

JPH11191386A METALLIC VAPOR DISCHARGE LAMP 失效
公开(公告)号：JPH11191386A
公开(公告)日：1999-07-13
申请号：JP36082697
申请日：1997-12-26
申请人： MATSUSHITA ELECTRONICS CORP
发明人： SUGIMOTO KOICHI , NOHARA KOJI , NISHIURA YOSHIHARU , TAKEDA KAZUO , YAMAMOTO TAKASHI , NAKAYAMA FUMINORI
IPC分类号： H01J61/30
摘要： PROBLEM TO BE SOLVED: To provide a metallic vapor discharge lamp that secures its characteristics in its life and has small variation of its characteristics in relation to the change of the lighting direction by eliminating a disc out of components constituting an arc tube and reviewing the shape of the arc tube. SOLUTION: For a metallic vapor discharge lamp which has a pair of electrodes 17 in its container and has an arc tube in which at least a luminescent metal compound is filled in the container, a structure is so composed that the container has a first cylindrical part 11, second cylindrical parts 12 and third cylindrical parts 13, each of the second cylindrical parts 12 is formed at each of both the ends of the first cylindrical part 11 interposing a tapered part 14, each of the third cylindrical parts 13 is secured on each of the second cylindrical parts 12, the electrodes 17 each run through each of the third cylindrical parts 13 and face each other in the container, the electrodes 17 are attached to the third cylindrical parts 13 by the use of sealing bodies 18, a clearance is provided in between each inside wall of the third cylindrical parts 13 and each of the electrodes 17, the angle formed by the internal surface of each of the tapered parts 14 and the center axis of each of the electrodes 17 is 40-80 deg..

6. 发明专利

JPH10302725A METAL HALIDE LAMP 失效
公开(公告)号：JPH10302725A
公开(公告)日：1998-11-13
申请号：JP11077197
申请日：1997-04-28
申请人： MATSUSHITA ELECTRONICS CORP
发明人： NOHARA KOJI , YAMAMOTO TAKASHI , NAKAYAMA FUMINORI , TAKEDA KAZUO , NISHIURA YOSHIHARU , SUGIMOTO KOICHI , ODA SHIGEFUMI
IPC分类号： H01J61/54
摘要： PROBLEM TO BE SOLVED: To provide a stable lamp characteristic during lighting and improve a re-start characteristic by applying the constitution that a radiation source having a cover of alumina and the specific range of a radiation dose is sealed as a starting auxilairy substance into a luminous tube containing metal halide, mercury an rare gas sealed inside. SOLUTION: An outer tube 3 internally has a luminous tube 2 of light transmission alumina with a pair of electrodes 1 inside, and a light transmission cylinder 4 surrounding the luminous tube 2. In addition, a sealed radiation source 8 as a starting auxiliary substance 8, a prescribed amount of mercury, starting rare gas and metal halide are sealed into the luminous tube 2. Also, the sealed radiation source 8 has a radiation dose within the range of 1.0 to 37 MBq, and formed so that a carrier made of alumina is coated with a radiation layer of alumina containing radioactive material, and a thin film of non-radioactive layer of alumina is formed on the radiation layer. In this case, the crystal grain size of the alumina is preferably taken at a value equal to or above 15 μm. According to this construction, a sealed radiation source having a carrier mainly composed of alumina can be put to practical use.

7. 发明专利

JPH10294085A MATAL HALIDE LAMP 失效
公开(公告)号：JPH10294085A
公开(公告)日：1998-11-04
申请号：JP10217097
申请日：1997-04-18
申请人： MATSUSHITA ELECTRONICS CORP
发明人： NAKAYAMA FUMINORI , YAMAMOTO TAKASHI , NOHARA KOJI , SUGIMOTO KOICHI , TAKEDA KAZUO , ODA SHIGEFUMI , NISHIURA YOSHIHARU
IPC分类号： F21V3/04 , H01J61/20 , H01J61/32 , H01J61/50 , H01J61/54 , H01J61/82
摘要： PROBLEM TO BE SOLVED: To enable illuminating operation by a low pulse voltage and shorten start and re-start time by constituting a metal halide lamp by a ceramic material, sealing a pair of electrodes and at least a metal halide being a luminous material and disposing a proximal conductor proximal to or in contact with the luminous tube. SOLUTION: At one end of an external lead wire 6a, one end of a proximal conductor 10 is fixed. The other end of the proximal conductor 10 is disposed proximal to a luminous tube 4. The proximal conductor 10 is provided with a given potential by a pulse voltage applied during lighting, and insulation destruction of rare gas in the luminous tube 4 and mercury steam is promoted. By annexing this proximal conductor 10, this lamp reduces a pulse voltage during start and re-start, and time required for start and re-start can be reduced. Further, there is no need for applying an emitter substance to an electrode.

8. 发明专利

JPH10106491A HIGH-PRESSURE METAL VAPOR DISCHARGE LAMP 失效
公开(公告)号：JPH10106491A
公开(公告)日：1998-04-24
申请号：JP26265896
申请日：1996-10-03
申请人： MATSUSHITA ELECTRONICS CORP
发明人： YAMAMOTO TAKASHI , NAKAYAMA FUMINORI , NOHARA KOJI , NISHIURA YOSHIHARU , ODA SHIGEFUMI
IPC分类号： H01J61/30 , H01J61/36 , H01J61/54
摘要： PROBLEM TO BE SOLVED: To prevent the occurrence of characteristic dispersion due to the dispersion of a shape, provide a highly efficient and stable service life characteristic independent of gases in an outer tube or the composition thereof, and further prevent a characteristic change due to a leak or reaction with frit during lighting. SOLUTION: An arc tube 1 has the first disc 18a and the second disc 18b of translucent ceramic respectively shrinkage fitted to and integrated with both open ends of a main tube 17 of translucent ceramic in such a state as sealed airtightly. Also, one end of each of capillary tubes 25a, 25b and 25c is shrinkage fitted to and integrated with the first disc 18a and the second disc 18b. Furthermore, electrode introduction materials are inserted in the capillary tubes 25a and 25b. Also, an auxiliary electrode introduction wire as the electrode introduction material is inserted and sealed in the capillary tube 25c.

9. 发明专利

JPH11144682A HIGH-PRESSURE DISCHARGE LAMP 失效
公开(公告)号：JPH11144682A
公开(公告)日：1999-05-28
申请号：JP30247497
申请日：1997-11-05
申请人： MATSUSHITA ELECTRONICS CORP
发明人： NOHARA KOJI , NISHIURA YOSHIHARU , TAKEDA KAZUO , SUGIMOTO KOICHI , NAKAYAMA FUMINORI , YAMAMOTO TAKASHI
IPC分类号： H01J61/36
摘要： PROBLEM TO BE SOLVED: To provide a high-pressure discharge lamp capable of preventings reaction of ceramic with a light emitting metal that are light emitting tube materials while the lamp is lit, and providing stable lamp characteristics during the service life with high efficiency. SOLUTION: A light emitting tube 1 consisting of a light-transmissive ceramic is provided in an outer tube. The light emitting tube 1 consists of a main tube part 10, disc-shaped disc parts 11a and 11b secured so as to close openings at both ends of this main tube 10 and having through holes formed at a center, this tube parts 12a and 12b at one end inserted into and secured to the through holes of these discs 11a and 11b. Electrode introducing bodies 14 and 15 at one end at which electrodes 13a and 13b are provided is inserted into the thin tube parts 12a and 12b and sealed therewith so that the electrodes 13a and 13b are positioned in the light emitting tube 1. A surface on a side facing discharge spaces of the discs 11a and 11b form grooves 16a and 16b in which the light emitting metal that is a sealant is retained while the lamp is lit.

10. 发明专利

JP2000340171A METAL VAPOR DISCHARGE LAMP 失效
公开(公告)号：JP2000340171A
公开(公告)日：2000-12-08
申请号：JP14469299
申请日：1999-05-25
申请人： MATSUSHITA ELECTRONICS CORP
发明人： KAKISAKA SHUNSUKE , NOHARA KOJI , ODA SHIGEFUMI , NAKAYAMA FUMINORI , YAMAMOTO TAKASHI
IPC分类号： H01J61/073 , H01J61/36 , H01J61/82 , H01J61/88
摘要： PROBLEM TO BE SOLVED: To provide a metal vapor discharge lamp having less color temperature variation even if continuously lit for a long time and stably holding its characteristics by suppressing settlement of a discharge metal into a narrow tube part. SOLUTION: In this lamp, the following equation is satisfied where the lamp power is P (W) and the distance between a narrow tube part 8a/8b side end of a coil 10a/10b to a discharge space side end of a narrow tube part 8a/8b is X. The equation is set X>0.0056P+0.394.

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