CN103155092A - Ceramic tube and method for producing same - Google Patents

Ceramic tube and method for producing same Download PDF

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Publication number
CN103155092A
CN103155092A CN2011800481701A CN201180048170A CN103155092A CN 103155092 A CN103155092 A CN 103155092A CN 2011800481701 A CN2011800481701 A CN 2011800481701A CN 201180048170 A CN201180048170 A CN 201180048170A CN 103155092 A CN103155092 A CN 103155092A
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CN
China
Prior art keywords
capillary
axis
earthenware
hole
illuminating part
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Pending
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CN2011800481701A
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Chinese (zh)
Inventor
宫泽杉夫
渡边敬一郎
大桥玄章
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NGK Insulators Ltd
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NGK Insulators Ltd
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Publication of CN103155092A publication Critical patent/CN103155092A/en
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B28—WORKING CEMENT, CLAY, OR STONE
    • B28B—SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
    • B28B1/00—Producing shaped prefabricated articles from the material
    • B28B1/002—Producing shaped prefabricated articles from the material assembled from preformed elements
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B28—WORKING CEMENT, CLAY, OR STONE
    • B28B—SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
    • B28B1/00—Producing shaped prefabricated articles from the material
    • B28B1/24—Producing shaped prefabricated articles from the material by injection moulding
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J61/00—Gas-discharge or vapour-discharge lamps
    • H01J61/02—Details
    • H01J61/30—Vessels; Containers
    • H01J61/302—Vessels; Containers characterised by the material of the vessel
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J7/00—Details not provided for in the preceding groups and common to two or more basic types of discharge tubes or lamps
    • H01J7/14—Means for obtaining or maintaining the desired pressure within the vessel
    • H01J7/22—Tubulations therefor, e.g. for exhausting; Closures therefor
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J9/00—Apparatus or processes specially adapted for the manufacture, installation, removal, maintenance of electric discharge tubes, discharge lamps, or parts thereof; Recovery of material from discharge tubes or lamps
    • H01J9/24—Manufacture or joining of vessels, leading-in conductors or bases
    • H01J9/245—Manufacture or joining of vessels, leading-in conductors or bases specially adapted for gas discharge tubes or lamps
    • H01J9/247—Manufacture or joining of vessels, leading-in conductors or bases specially adapted for gas discharge tubes or lamps specially adapted for gas-discharge lamps
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J9/00—Apparatus or processes specially adapted for the manufacture, installation, removal, maintenance of electric discharge tubes, discharge lamps, or parts thereof; Recovery of material from discharge tubes or lamps
    • H01J9/24—Manufacture or joining of vessels, leading-in conductors or bases
    • H01J9/26—Sealing together parts of vessels
    • H01J9/265—Sealing together parts of vessels specially adapted for gas-discharge tubes or lamps
    • H01J9/266—Sealing together parts of vessels specially adapted for gas-discharge tubes or lamps specially adapted for gas-discharge lamps
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J9/00—Apparatus or processes specially adapted for the manufacture, installation, removal, maintenance of electric discharge tubes, discharge lamps, or parts thereof; Recovery of material from discharge tubes or lamps
    • H01J9/38—Exhausting, degassing, filling, or cleaning vessels
    • H01J9/395—Filling vessels

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  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Ceramic Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Mechanical Engineering (AREA)
  • Vessels And Coating Films For Discharge Lamps (AREA)
  • Manufacture Of Electron Tubes, Discharge Lamp Vessels, Lead-In Wires, And The Like (AREA)

Abstract

In the present invention, a first ceramic tube (10A) for a high-brightness discharge lamp has a light-emitting unit (12) that emits light therewithin and an electrode-sealing first tubule (14a) and second tubule (14b) respectively formed integrally to the two ends of the light-emitting unit (12). Of the light-emitting unit (12), a position towards the first tubule (14a) is provided with a through-hole (16) wherein the direction from the inside of the light-emitting unit (12) to the outside of the light-emitting unit (12) is the same as the direction of extension of the first tubule (14a).

Description

Earthenware and manufacture method thereof
Technical field
The present invention relates to a kind of manufacture method and earthenware of the earthenware for high brightness discharge lamps such as high-pressure sodium lamp or Metal halogen lamps.
Background technology
Ceramic gold-halogen lamp is a kind ofly by the pair of electrodes that is inserted in ceramic tube for high-intensity discharge lamp inside, metal halide to be carried out ionization, carries out thus the lamp of Discharge illuminating.
This earthenware has a pair of capillary, and this a pair of capillary is opposite to illuminating part with its axis respectively and the mode of locating forms.Be respectively arranged with the electrode patchhole at each capillary, and via these electrode patchhole electrode insertions.disclosed earthenware has following several: make up a plurality of members and the earthenware made, or the earthenware of making in integrated mode as solid memder, the earthenwares that engage two members and make etc. are (for example with reference to JP 63-143738 communique, Unexamined Patent 5-334962 communique, Unexamined Patent 7-21990 communique, Unexamined Patent 8-55606 communique, special table 2010-514125 communique, special table 2010-514127 communique, No. 2006/0001346 specification of U.S. Patent Application Publication, special table 2009-530127 communique, JP 2008-44344 communique).
In addition, for example in being arranged at two capillaries (pore) of earthenware, at a lateral electrode patchhole electrode insertion and after with sealings such as sintered glasses (fritted glass), import luminescent substance by remaining opposite side electrode patchhole in luminous containers, afterwards, to this opposite side electrode patchhole electrode insertion and with sealings such as sintered glasses, carry out thus the combination of luminous tube.In addition, except the structure that above-mentioned two capillaries are set in earthenware, as other structures, also known the insertion with electrode arranges the structure of three capillary or pore separately with capillary, this three capillary or pore are used for carrying out the importing of luminescent substance and import luminescent substance in luminous containers after enclosed electrode.
Particularly, in JP 63-143738 communique, following example is disclosed: a kind of ceramic discharge lamp, the both ends open section of the luminous tube bulb that is consisted of by light transparent ceramic, connect (solid phase bonding) and sealed by being used for blockage body solid phase support electrode, that be made of the conductive metal pottery respectively, wherein exhaust is used and is enclosed thing and supplies with the aperture that is used for using in the luminous tube bulb is provided with as pipe.Stop up this aperture by deposition pottery key.
In Unexamined Patent 5-334962 communique, disclose following example: the cylindrical-opening section at the light transmission bulb side that is made of polycrystal alumina is equipped with respectively blockage body, be formed with the respectively hole of through electrode in the center of each blockage body, be formed with for import the opening of luminescent substance in the light transmission bulb in the position of departing from a side blockage body center.
In Unexamined Patent 7-21990 communique, disclose following example: the pin-shaped Ampereconductors of diameter 300 μ m is inserted in the both ends of discharge tube, and the stopper at two ends (plug) is directly connected in this both ends by sintering; Especially in Fig. 3 and Fig. 4, disclose following example: be formed with filler opening more than diameter 1mm near the wall section of the discharge tube the second end or the second stopper, described filler opening is used for importing luminescent substance in discharge tube.
In Unexamined Patent 8-55606 communique, following example is disclosed: with the small diameter tube of bottom sealing with from the central part of luminous tube infundibular segment downwards sagging mode be wholely set, make thus bottom in this small diameter tube (become the part of cold section when lighting:, save bit by bit and do not evaporate and remain in liquid metal halide in luminous tube the coldest section).Following content is also disclosed especially: be arranged on and a side the coldest partition distance, opening that be flange shape pars intermedia, the introducing port when enclosing metal halide and mercury in luminous tube, but also can be with described small diameter tube as ingress pipe.
Show to disclose following ceramic burner in the 2010-514125 communique the spy: as the integrated part of discharge vessel and make, the end side of discharge vessel seals by the ceramic end portion stopper with a side end of discharge vessel and tube wall.Following example also being disclosed especially: at the discharge vessel ceramic wall, be provided with following pipe: during the manufacturing ceramic burner, is used for importing the ionization packing material in discharge vessel, and gives prominence to outside the ceramic wall of discharge vessel.In addition, pipe seals with air tight manner.
In special table 2010-514127 communique, disclose following example: discharge vessel is by two different parts (being separated by dotted line in Fig. 2 A of this communique), for example be substantial spherical or substantial ellipse, only the part at the first discharge vessel arranges following pipe: during the manufacturing ceramic burner, be used for importing packing material in the ionization discharge vessel, and give prominence to outside the ceramic wall of discharge vessel.In addition, pipe seals with air tight manner.
In No. 2006/0001346 specification of U.S. Patent Application Publication, disclose following example: the end member that has a section and be combined with the two ends of this one respectively is provided with the inboard electrode that extends to cylinder section at the central part of each end member; Especially be provided with entrance hole at a side end member, this entrance hole connects the outside of this end member to inner face (with the opposed face in inside of cylinder section).Importing metal halide etc. in the cylinder section is to carry out via entrance hole, seals entrance hole by stopper member afterwards.
In addition, in the prior art, known following content: a kind of manufacture method, at the composition surface of a plurality of inorganic powder formed bodies coating sizing-agent, a plurality of formed bodies are adjacent to and integrated, and carry out sintering, can access thus firm jointing sintered body (for example special table 2009-530127 communique); Or a kind of structure, when suppressing or avoiding the increase of the distortion at junction surface or surface roughness, can access the conjugant (for example with reference to JP 2008-44344 communique) of inorganic powder formed body.
Namely, in special table 2009-530127 communique, a kind of manufacture method that is applicable to the sintered body of discharge lamp luminous tube is disclosed, this manufacture method has: the step that obtains the first inorganic powder formed body and the second inorganic powder formed body, this the first inorganic powder formed body and the second inorganic powder formed body, contain inorganic powder, have organic dispersion medium and the gelling agent of reactive functional groups, and solidified by the chemical reaction of organic dispersion medium and gelling agent; In the step of the composition surface coating sizing-agent of the first inorganic powder formed body, this slurry contains powder composition and organic dispersion medium; With the inorganic powder formed body, obtain the step of one conjugant with the state contact of sandwich slurry; And this conjugant of sintering and obtain the step of sintered body.
The sintered body that is applicable to the discharge lamp luminous tube is disclosed in JP 2008-44344 communique, the sintered body of the conjugant of two above inorganic powder formed bodies is had: the first component part, its two the above inorganic powder formed bodies with described conjugant are corresponding, the second component part, its junction surface with described conjugant is corresponding; And have following characteristics (a) and (b) in a kind of or whole.
(a) described the second component part has the following surface roughness of described the first component part.
(b) described the second component part has the light transmittance more than described the first component part near its width center.
Summary of the invention
In addition, in JP 63-143738 communique, Unexamined Patent 7-21990 communique, Unexamined Patent 8-55606 communique, special table 2010-514125 communique, special table 2010-514127 communique, be provided with: the first capillary and the second capillary are used for importing enclosed electrode in illuminating part; Three capillary (or the 3rd pore) is used for importing luminescent substance in illuminating part.The first capillary, the second capillary and three capillary are formed with respectively the first through hole, the second through hole and the 3rd through hole along direction of principal axis.Especially, the first capillary and the second direction of principal axis capillaceous, different from the direction of principal axis of three capillary (or the 3rd pore).Therefore, when making the foundation of earthenware-formed body with methods such as injection moulding or gel casting formings, the pin, different with the draw direction of the pin that is used for shaping the 3rd through hole (or the 3rd pore) of the first through hole and the second through hole be used for to be shaped, be necessary to consist of accordingly with it mechanism of forming machine, thereby need manufacturing equipment complicated and high price.This will cause the high price of manufacturing cost.
In illuminating part, be provided with the part of capillary or pore, to compare light transmission rate low with other parts, if therefore described part is arranged on the position of the corresponding region of discharge between electrode tip, the permeability of light can worsen, can become the reason of luminous efficiency or luminous intensity distribution reduction, therefore not preferred.On the other hand, if will be provided with the part of capillary or pore, be arranged on the first capillary or the second position capillaceous near electrode sealing use, when lighting, easily become cold spot, luminescent substance can be saved bit by bit at capillary or pore, produces thus the corrosion of ceramic part, and becomes the reason of life-span reduction.
in addition, as Unexamined Patent 5-334962 communique and No. 2006/0001346 specification of U.S. Patent Application Publication, in advance seal the first capillary of use or the second capillary separately with electrode, shaping is provided with the disc-shape section (plug part) of the 3rd pore, the 3rd pore has the direction of principal axis identical with the first capillary or the second capillary, and in the described disc-shape of pipe (tube) main body combination section, in the situation that make in this way, after combination lamp, pore is positioned near the wall thickness electrode, thereby cause the corrosion that is caused by cold spot, therefore not preferred.
If reduce the angle that the axis by the axis of three capillary and illuminating part becomes, on the border of the inner face of the through hole of three capillary and illuminating part, can form the edge that section is acute angle, therefore there are the following problems: after in the processing of operation or carrying etc., easily produce breach at the edge, produce rubbish, or the part that goes out breach cracks.
In addition, if three capillary is long, when lighting, can causes temperature not rise and become cold spot, therefore as mentioned above, can produce the corrosion of ceramic part, thus not preferred.
The present invention considers above problem and proposes, its purpose is to provide a kind of following ceramic tube for high-intensity discharge lamp: have for import the 3rd pore or the three capillary of luminescent substance in illuminating part, but can't cause the complicated of manufacturing equipment, in addition, can not exert an influence to seeing through of light, thereby can realize the reduction of manufacturing cost, the raising of productivity ratio, the raising of reliability.
In addition, other purposes of the present invention are, provide a kind of manufacture method of following ceramic tube for high-intensity discharge lamp: can enough simple operations, simple manufacturing equipment makes earthenware, described earthenware has the 3rd pore or the three capillary for importing luminescent substance in illuminating part, thereby can realize the reduction of manufacturing cost, the raising of productivity ratio, the raising of rate of finished products.
［ 1 ］ earthenware of the present invention's the first scheme is a kind of ceramic tube for high-intensity discharge lamp, and described earthenware has: illuminating part, and section carries out luminous within it; The first capillary and second capillary of electrode sealing use, be integrally formed in respectively the both sides of this illuminating part, it is characterized in that, the close described first position capillaceous at described illuminating part has through hole, and the direction that this through hole extends to the outside of described illuminating part from the inside of this illuminating part is identical with the described first bearing of trend capillaceous.
［ 2 ］ in the present invention's the first scheme, it is characterized in that, the axis of described through hole is parallel with the described first axis capillaceous.
［ 3 ］ in the present invention's the first scheme, it is characterized in that, the ratio that described through hole is formed on described illuminating part corresponding to by the position of the electrode tip of described the first capillary seal near the described first position capillaceous.
［ 4 ］ in the present invention's the first scheme, it is characterized in that, described through hole be formed on described illuminating part with upper/lower positions, namely the distance of the axis of this through hole and described the first axis capillaceous is in the position more than 0.55 times of described the first capillary external diameter.
［ 5 ］ in alternative plan of the present invention, it is characterized in that with regard to described illuminating part, part from from the part of corresponding region of discharge to described the first capillary extending or any one part from the part of the described region of discharge of correspondence is extended to the described second part capillaceous are flexure plane, and have described through hole at this flexure plane.
［ 6 ］ earthenware of alternative plan of the present invention is a kind of ceramic tube for high-intensity discharge lamp, and it has: illuminating part, and section carries out luminous within it; The first capillary and second capillary of electrode sealing use are integrally formed in respectively this illuminating part both sides; It is characterized in that, the close described first position capillaceous in described illuminating part has the projected direction three capillary identical with the described first bearing of trend capillaceous; And have from described three capillary top and connect to the hole of the inboard of described illuminating part.
［ 7 ］ in alternative plan of the present invention, it is characterized in that, the axis of described three capillary is parallel with the described first axis capillaceous.
［ 8 ］ in alternative plan of the present invention, it is characterized in that, described three capillary be formed on described illuminating part, than corresponding to being compared by the position of the electrode tip of described the first capillary seal near the described first position capillaceous.
［ 9 ］ in alternative plan of the present invention, it is characterized in that, described three capillary be formed on described illuminating part with upper/lower positions, namely the distance of the axis of this three capillary and described the first axis capillaceous is in the position more than 0.55 times of described the first capillary external diameter.
［ 10 ］ in alternative plan of the present invention, it is characterized in that, outline line when described illuminating part inner face is dissectd with the face that comprises described three capillary axis and the relation of described axis, at angle that the tangential direction of the intersection point of the above outline line of described outline line and described axis becomes with described axis more than 30 °.
［ 11 ］ in alternative plan of the present invention, it is characterized in that, in the time of becoming described three capillary and be made as basic point along the point of the benchmark of the maximum length of its axis, the maximum length of described three capillary is, from described basic point to described the first capillary end, along 1/10-5/10 of the length of described the first capillary axis.
［ 12 ］ in alternative plan of the present invention, it is characterized in that, with regard to described illuminating part, part from from the part of corresponding region of discharge to described the first capillary extending or from the part of the described region of discharge of correspondence to the part of described the second capillary extending any one be flexure plane, and have described three capillary at this flexure plane.
［ 13 ］ manufacture method of the earthenware of third party's case of the present invention by engaging the earthenware of a ceramic tube for high-intensity discharge lamp of a plurality of ceramic formation bodies making, is characterized in that described manufacture method has the formed body production process and formed body engages operation.In described formed body production process, make the first ceramic formation body and the second ceramic formation body, wherein, described the first ceramic formation body one has the first bend and the first cylindrical portion, and has along the through hole of described the first cylindrical portion axis direction at described the first bend; The second ceramic formation body, one have the second bend and the second cylindrical portion.Engage in operation at described formed body, the end face of the end face of described the first bend by engaging described the first ceramic formation body and described second bend of described the second ceramic formation body, make conjugant, and the axis of the axis of described first cylindrical portion of described the first ceramic formation body and described through hole is parallel.
［ 14 ］ manufacture method of the earthenware of the cubic case of the present invention by engaging the earthenware of a ceramic tube for high-intensity discharge lamp of a plurality of ceramic formation bodies making, is characterized in that described manufacture method has the formed body production process and formed body engages operation.In described formed body production process, make the first ceramic formation body and the second ceramic formation body, wherein, the first ceramic formation body one has the first bend and the first cylindrical portion, and have along the capillary of described the first cylindrical portion axis direction at described the first bend, and the hole in having from the top perforation of described capillary to described the first bend, the second ceramic formation body one has the second bend and the second cylindrical portion.Engage in operation at described formed body, the end face of the end face of described the first bend by engaging described the first ceramic formation body and described second bend of described the second ceramic formation body is made conjugant, and the axis of described first cylindrical portion of described the first ceramic formation body is parallel with the axis in described capillary and described hole.
As mentioned above, according to earthenware of the present invention, although have for import the 3rd pore or the three capillary of luminescent substance in illuminating part, but can not cause the complicated of manufacturing equipment yet, in addition, can not exert an influence to seeing through of light, thereby can realize the reduction of manufacturing cost, the raising of productivity ratio, the raising of reliability.
In addition, manufacture method according to earthenware of the present invention, the enough simple operations of energy, simple manufacturing equipment are made earthenware, described earthenware has the 3rd pore or the three capillary for importing luminescent substance in illuminating part, thereby can realize the reduction of manufacturing cost, the raising of productivity ratio, the raising of rate of finished products.
Description of drawings
Fig. 1 means the stereogram of the first embodiment earthenware (the first earthenware) structure.
Fig. 2 means in the manufacturing process of the first earthenware, the exploded perspective view of the combination example of the first ceramic formation body and the second ceramic formation body.
Fig. 3 means in the first earthenware, the profile of the state of sealing the first electrode and the second electrode.
Fig. 4 means the profile of the example of comparative example earthenware.
In Fig. 5, Fig. 5 A means that Fig. 5 B means the profile of the state of extracting pin for the profile of the mold of the earthenware of comparison example (fixed mould and moveable die) structure, and Fig. 5 C means the profile of the state of extracting moveable die.
In Fig. 6, Fig. 6 A means that Fig. 6 B means the profile of the state of extracting moveable die for the profile of mold (fixed mould and the moveable die) structure of making the first earthenware.
Fig. 7 means the flow chart for the manufacture method of making the first earthenware.
Fig. 8 means the profile of the first conjugant.
Fig. 9 means the stereogram of earthenware (the second earthenware) structure of the second embodiment.
Figure 10 means in the second earthenware, the profile of the state of sealing the first electrode and the second electrode.
In Figure 11, Figure 11 A means that Figure 11 B means the profile of the state of extracting moveable die for the profile of mold (fixed mould and the moveable die) structure of making the second earthenware.
Figure 12 be for explanation at the second earthenware, the major part enlarged drawing of the optimized angle of the projected direction of the three capillary of relative luminous section inner face.
Figure 13 is at the second earthenware, the profile of the maximum length of three capillary for explanation.
Figure 14 means the flow chart for the manufacture method of making the second earthenware.
Figure 15 means in the manufacturing process of the second earthenware, the exploded perspective view of the combination example of the first ceramic formation body and the second ceramic formation body.
Figure 16 means the profile of the second conjugant.
Figure 17 means the profile of the earthenware of comparative example 3.
Embodiment
Below, with reference to Fig. 1-Figure 17, the example of the execution mode of the manufacture method of earthenware of the present invention and earthenware is described.In addition, use in this manual "-" of number range to mean, the numerical value that writes on before and after it is comprised as lower limit and higher limit.
In following embodiment, suppose to make an earthenware and be illustrated.Certainly also can be applicable to make the situation of a plurality of earthenwares.
In addition, earthenware preferably uses as the luminous tube of discharge lamp.High-pressure discharge lamp is applicable to various lighting devices such as road lighting, shop illumination, automobile head lamp, liquid crystal projection apparatus.Luminous tube comprises that Metal halogen lamp is with luminous tube or high-pressure sodium lamp arc tube.
At first, as shown in Figure 1, the first embodiment earthenware (below be referred to as the first earthenware 10A) has: illuminating part 12, and section carries out luminous within it; Electrode sealing is with the first capillary 14a and the second capillary 14b, and is integrally formed in this illuminating part 12 both sides respectively.In addition, in illuminating part 12, have through hole 16 in the position near the first capillary 14a, the direction that described through hole extends to the outside of illuminating part 12 from the inside of this illuminating part 12 is identical with the bearing of trend of the first capillary 14a.In the process that the first earthenware 10A is for example made as luminous tube, this through hole 16 uses as the entrance hole that is used for to the interior importing luminescent substance of illuminating part 12 etc.Therefore, after importing luminescent substance etc., through hole 16 is sealed.In addition, in the inside of illuminating part 12, start gas (start gas) except enclosing the inertia such as argon, also enclose mercury and metal halide additive.But mercury is not to enclose.
As shown in Figure 2, by engaging the first ceramic formation body 22A and the second ceramic formation body 22B and burning till to make this first earthenware 10A, wherein, described the first ceramic formation body 22A is formed with the first bend 18a and the first cylindrical portion 20a, and described the second ceramic formation body 22B is formed with the second bend 18b and the second cylindrical portion 20b.In addition, as shown in Figure 1, with regard to the first earthenware 10A, have bulge (illuminating part 12) at central portion, described bulge is by the joint of the first bend 18a and the second bend 18b and burns till formation; Have respectively the first integrally formed capillary 14a and the second capillary 14b at illuminating part 12 two ends, and have and formed the shape that is communicated to the hollow bulb 24 of the second capillary 14b from the first capillary 14a in inside.
As shown in Figure 3, the first capillary 14a and the second capillary 14b respectively insert-seal the first electrode 26A and the second electrode 26B are arranged.The first electrode 26A has: the first electrode axis 28a, be wound on the first coil 30a on the first electrode axis 28a top and by the first guide portion 32a that is connected in the first electrode axis 28a rear end such as welding; By this first guide portion 32a being sealed in the inwall of the first capillary 14a, the first electrode 26A is sealed in the first capillary 14a as a whole.In the same manner, the second electrode 26B has: the second electrode axis 28b, be wound on the second coil 30b on the second electrode axis 28b top and by the second guide portion 32b that is connected in the second electrode axis 28b rear end such as welding; By this second guide portion 32b being sealed in the inwall of the second capillary 14b, the second electrode 26B is sealed in the second capillary 14b as a whole.In illuminating part 12, the zone between the first coil 30a and the second coil 30b is exactly to carry out luminous region of discharge 34.
In illuminating part 12, be to the part of extending to the first capillary 14a the first flexure plane 36a that diameter dwindles continuously from the part corresponding to region of discharge 34, be to the part of extending to the second capillary 14b the second flexure plane 36b that diameter dwindles continuously from the part corresponding to region of discharge 34.
In addition, in illuminating part 12, through hole 16 is arranged on than the first flexure plane 36a corresponding to the more close first capillary 14a in position of the first electrode 26A end (first coil 30a top).particularly, as shown in Figure 3, will be from the axis n1 place 35 farthest from the first capillary 14a of the opening of the through hole 16 in illuminating part 12, picture is the vertical line that intersects vertically perpendicular to vertical line Ln(vertical line Ln and the axis n1 of axis n1), and the position on the axis n1 that forms is made as Pa, the position on the first electrode 26A top on axis n1 is made as Pb, to be made as positive direction towards the direction of the first capillary 14a take position Pb as benchmark, when the direction of the second capillary 14b is made as negative direction, position Pa is preferably in the position identical with position Pb or be positioned at the position that relative position Pb is in positive direction.At this moment, preferably in the axis m1 of through hole 16 mode parallel with the axis n1 of the first capillary 14a, through hole 16 is set.
In addition, the earthenware of comparative example as shown in Figure 4 can consider above-mentioned through hole 16 is arranged in the mode that the axis n1 of the axis m1 of this through hole 16 and the first capillary 14a intersects vertically, but there are the following problems.
Namely, as shown in Figure 2, the first earthenware 10A is by engaging the first ceramic formation body 22A and the second ceramic formation body 22B and burn till to make, but when for example using the gel casting forming method and making the first ceramic formation body 22A that is provided with through hole 16, as shown in Fig. 5 A, must have as mold: fixed mould 38 and the moveable die 40 of be used for to be shaped the first bend 18a and the first cylindrical portion 20a, be used to form the pin 42 of through hole 16.And, need to the hole 44 that pin 42 is connected be set at fixed mould 38, and need to be provided for making at moveable die 40 that the top of pin 42 inserts escapes hole 46, in addition, when carrying out die sinking, at first, as shown in Fig. 5 B, extract pin 42, then as shown in Fig. 5 C, for extracting moveable die 40, needs are used for the reciprocating motion of the reciprocating motion of moveable die 40 and pin 42 is driven mechanism and the driving control system of control.Can exist like this cause the complicated of manufacturing equipment and maximize, and the problem that exists manufacturing cost to change at high price.
To this, in the first earthenware 10A, be provided with through hole 16 with the axis m1 that can make through hole 16 and the parallel mode of axis n1 of the first capillary 14a, therefore can not produce the problems referred to above.Namely, as shown in Fig. 6 A and Fig. 6 B, as the first mold that is used for making the first ceramic formation body 22A, be provided for forming the pin 48 of through hole 16 on opposed of moveable die 40 and fixed mould 38, and fixed mould 38 be provided for inserting this pin 48 escape hole 50 just can, need not to carry out significantly design alteration.And, as shown in Fig. 6 B, when carrying out die sinking, only need to extract moveable die 40, and not need separately pin to be driven special mechanism or the driving control system of control.That is, only need to be used for the reciprocating motion of moveable die 40 is driven mechanism and the driving control system of control, thereby can not cause complicated, the maximization of manufacturing equipment.
In addition, in this first earthenware 10A, the ratio that preferably through hole 16 is arranged on illuminating part 12 is corresponding to the position near the first capillary 14a, the position of the first electrode 26A end (first coil 30a top), more preferably through hole 16 is arranged on than corresponding to the position of the end of the first electrode 26A to the first capillary 14a near the position more than 0.5mm.Therefore through hole 16 can not exert an influence to seeing through of light, can prevent the deterioration of deteriorated, the light distribution characteristic of the luminous efficiency that caused by through hole 16.
In addition, preferably at the distance L a of the axis n1 of illuminating part 12, axis m1 through hole 16 and the first capillary 14a on the position more than 0.55 times of illuminating part 12 first capillary 14a D outer diameter a, through hole 16 is set.Thus, when with the first earthenware 10A when the luminous tube, can avoid during bright light the sealing of through hole 16 to become cold spot, thereby also can prevent the corrosion of sealing.In the situation that have structure as the first earthenware 10A, because thermal capacitance greatly easily becomes cold spot during bright light, even do not become cold spot, temperature is reduced near the first capillary 14a.When nearby through hole 16 being set, also can not gasify during lighting, near the luminescent substance of saving bit by bit through hole 16 can increase, and accelerated corrosion.Therefore, through hole 16 preferably be arranged on as far as possible little in thermal capacitance the first flexure plane 36a part and bright light during temperature higher position.On the other hand, if distance L a surpasses 1.6 times of illuminating part 12 first capillary 14a external diameters, when being shaped, the contraction that is caused by the curing of gelling agent easily cracks, therefore preferably below 1.6 times.
At this, with reference to Fig. 7, the manufacture method that is used for making the first earthenware 10A is described.
At first, as shown in Figure 2, in the step S1 of Fig. 7, make the first ceramic formation body 22A and the second ceramic formation body 22B.The first ceramic formation body 22A be formed with after become the through hole 52 of through hole 16 during as sintered body (the first earthenware 10A).Do not form through hole at the second ceramic formation body 22B.
Particularly, in step S1a, hybrid ceramic powder, decentralized medium, gelling agent etc. and modulated gel casting are with slurry (being referred to as the slurry that is shaped).In step S1b, to a ceramic formation body 22A with in the first mold and the second ceramic formation body 22B with injection molding slurry in the second mold after, be cured.As shown in Fig. 6 A and Fig. 6 B, be provided with pin 48 for shaping through hole 16 at the first mold moveable die 40, be provided with at fixed mould 38 and escape hole 50 for what insert pin 48.Be not provided with pin 48 as above and escape hole 50 at the second mold.Afterwards, in step S1c, as shown in Figure 2, by the first mold and the second mold are carried out die sinking, and obtain the first ceramic formation body 22A and the second ceramic formation body 22B.
The first ceramic formation body 22A and the second ceramic formation body 22B all form the tubular with hollow bulb 54.More specifically, have finished product the first earthenware 10A(with reference to Fig. 1) at the similar shape of the length direction center of axis P1 shape dichotomous.Wherein, as Fig. 2 and shown in Figure 8, the first ceramic formation body 22A have be formed with the first bend 18a(cup-shaped) and the shape of the first cylindrical portion 20a, especially be formed with through hole 52 at the first bend 18a, and the axis m2 of the axis n2 of the first cylindrical portion 20a and through hole 52 is parallel.The second ceramic formation body 22B have be formed with the second bend 18b(cup-shaped) and the shape of the second cylindrical portion 20b.
Composition surface 56a and the 56b of the first ceramic formation body 22A and the second ceramic formation body 22B, be positioned at each end face of the first bend 18a and the second bend 18b, and be parallel to the face that the direction of principal axis with the first ceramic formation body 22A and the second ceramic formation body 22B intersects vertically.In addition, though not shown, can bestow chamfering (for example R face, C face) processing to each composition surface 56a and the outer peripheral portion of 56b, the interior circumferential portion of the first ceramic formation body 22A and the second ceramic formation body 22B.
In the step S2 of Fig. 7, engage the first ceramic formation body 22A and the second ceramic formation body 22B and make the first conjugant 58A.
Particularly, in step S2a, hybrid ceramic powder, solvent, adhesive etc. and modulation engages with slurry (being referred to as to engage slurry 60, with reference to Fig. 8).In step S2b, for example the composition surface 56a coating (supply) at the first ceramic formation body 22A engages slurry 60.Afterwards, in step S2c, the composition surface 56a of the first ceramic formation body 22A is alignd and crimping with the composition surface 56b of the second ceramic formation body 22B, obtain thus the first conjugant 58A shown in Figure 8.In addition, the the first conjugant 58A(that engages the first ceramic formation body 22A and the second ceramic formation body 22B and obtain is with reference to Fig. 8) shape and by burning till the similar shape that is shaped as of the first earthenware 10A that the first conjugant 58A obtains, the first earthenware 10A has the shape of dwindling the first conjugant 58A.
In addition, in the step S3 of Fig. 7, burn till the first conjugant 58A and obtain sintered body (the first earthenware 10A).
In the manufacture method of this first earthenware 10A, be formed with along the through hole 52 of the first cylindrical portion 20a axis direction at the first bend 18a of the first ceramic formation body 22A, therefore engaging and burning till when becoming the first earthenware 10A through subsequently the first ceramic formation body 22A and the second ceramic formation body 22B, can be easily form through hole 16 in the position near the first capillary 14a of illuminating part 12, this through hole 16 is identical with the bearing of trend of the first capillary 14a to the outside direction of extending of illuminating part 12 from this illuminating part 12 inside.In addition, need to not form through hole 52 for the first bend 18a at the first ceramic formation body 22A and the first mold be carried out significantly design alteration, or new driving mechanism etc. is set, therefore can be in the situation that do not cause complicated, the maximization of manufacturing equipment to make the first earthenware 10A.Namely, the enough simple operations of energy, simple manufacturing equipment are made the first earthenware 10A, the first earthenware 10A has for the through hole 16 to interior importing luminescent substance of illuminating part 12 etc., thereby can realize the reduction of manufacturing cost, the raising of productivity ratio, the raising of rate of finished products.
Then, with reference to Fig. 9-Figure 16 to the second embodiment earthenware (below, be referred to as the second earthenware 10B).
As shown in Figure 9, this second earthenware 10B has almost identical with above-mentioned the first earthenware 10A structure, but difference is as follows: illuminating part 12 have the projected direction three capillary 70 identical with the bearing of trend of the first capillary 14a near the position of the first capillary 14a, and have the hole (through hole 72) that connects from three capillary 70 tops to illuminating part 12 inboards.In the process that the second earthenware 10B is made as for example luminous tube, this three capillary 70 uses as the entrance hole that is used for to the interior importing luminescent substance of illuminating part 12 etc.Therefore, at the through hole 72 that imports the rear sealing three capillary 70 such as luminescent substance.
As shown in figure 10, on the first flexure plane 36a of three capillary 70 ratio that is arranged on illuminating part 12 corresponding to the more close first capillary 14a in position of the first electrode 26A end (first coil 30a top).in this case, the same with above-mentioned the first earthenware 10A, will be from the axis n1 point 35 farthest from the first capillary 14a of the opening of the interior through hole 72 of illuminating part 12, picture is the vertical line that intersects vertically perpendicular to vertical line Ln(vertical line Ln and the axis n1 of axis n1), and the position on the axis n1 that forms is made as Pa, the position on the first electrode 26A top on axis n1 is made as Pb, to be made as positive direction towards the direction of the first capillary 14a take position Pb as benchmark, direction towards the second capillary 14b is made as negative direction, at this moment, position Pa is preferably in the position identical with position Pb or be positioned at the position that relative position Pb is in positive direction.In addition, preferably in the axis m3 of three capillary 70 mode parallel with the axis n1 of the first capillary 14a, three capillary 70 is set.
Thus, as shown in Figure 11 A and Figure 11 B, as the first mold of making the first ceramic formation body 22A, moveable die 40 with opposed of fixed mould 38 on be provided for forming the pin 74 of through hole 72, and just can in the hole 78 of escaping that fixed mould 38 is provided for forming the space 76 of three capillary 70 and being used for insertion pin 74, need not to carry out significantly design alteration, and do not need separately pin 74 to be driven special mechanism or the driving control system of control.That is, only need to be used for the reciprocating motion of moveable die 40 is driven mechanism and the driving control system of control, thereby can not cause complicated, the maximization of manufacturing equipment.
In addition, in this second earthenware 10B, the ratio that preferably three capillary 70 is arranged on illuminating part 12 is corresponding to the position near the first capillary 14a, the position of the first electrode 26A end (first coil 30a top), more preferably through hole 16 is arranged on than corresponding to the position of the first electrode 26A end to the first capillary 14a near the position more than 0.5mm.Therefore three capillary 70 can not exert an influence to seeing through of light, can prevent the deterioration of deteriorated, the light distribution characteristic of the luminous efficiency that caused by three capillary 70.
At the distance L b of the axis n1 of illuminating part 12, axis m3 three capillary 70 and the first capillary 14a on the position more than 0.55 times of illuminating part 12 first capillary 14a D outer diameter a, three capillary 70 is set, therefore when the second earthenware 10B is used as luminous tube, can avoid that the sealing of three capillary 70 through holes 72 becomes cold spot during bright light, thereby also can prevent the corrosion of sealing.In the situation that have structure as the second earthenware 10B, because thermal capacitance greatly easily becomes cold spot when lighting, even do not become cold spot, temperature is reduced near the first capillary 14a.When nearby three capillary 70 being set, thermal capacitance can further increase, and temperature is reduced, and therefore also can not gasify during lighting, and near the luminescent substance of saving bit by bit three capillary 70 can increase, and accelerated corrosion.Therefore, three capillary 70 preferably be arranged on as far as possible little in thermal capacitance the first flexure plane 36a part and bright light during temperature higher position.On the other hand, if distance L b surpasses 1.6 times of illuminating part 12 first capillary 14a external diameters, when being shaped, the contraction that is caused by the curing of gelling agent easily cracks, therefore preferably below 1.6 times.
As shown in figure 12, outline line 80 when illuminating part 12 inner faces are dissectd with the face that comprises three capillary 70 axis m3 and the relation of axis m3, the angle θ that preferably becomes with axis m3 in tangent line 84 directions of the intersection point 82 of this outline line 80 on outline line 80 and axis m3 is more than 30 °.If reduce the angle θ that this becomes, can be on the border 86 of the inner face of the through hole 72 of three capillary 70 and illuminating part 12, form the edge that section is acute angle, in processing or handling process in operation subsequently, easily produce breach at the edge, and can produce rubbish or easily crack from the part that goes out breach.If the angle θ that becomes is more than 30 °, just this rough sledding can not occur.
In addition, as shown in figure 13, in the time of will being made as basic point 88 as the point along the benchmark of the maximum length Lc of the axis m3 of three capillary 70, the maximum length Lc of three capillary 70 is preferably, from basic point 88 to first capillary 14a ends, along 1/10-5/10 of the length L d of axis n1.If the maximum length Lc of three capillary 70 is too short, can be difficult to seal the through hole 72 of three capillary 70, if the maximum length Lc of three capillary 70 is long, when burning till, easily produce distortion, in addition, when bright light, owing to easily becoming cold spot, therefore there is the worry that easily causes corrosion.
At this, with reference to Figure 14, the manufacture method that is used for making the second earthenware 10B is described.
At first, as shown in figure 15, in the step S101 of Figure 14, make the first ceramic formation body 22A and the second ceramic formation body 22B.The first ceramic formation body 22A be formed with after become the 3rd cylindrical portion 90 and the through hole 92 of three capillary 70 and through hole 72 during as sintered body (the second earthenware 10B).Be not formed with the 3rd cylindrical portion 90 and through hole 92 at the second ceramic formation body 22B.
Particularly, hybrid ceramic powder, decentralized medium, gelling agent etc. and after modulation shaping slurry (the step S101a of Figure 14), after the first mold (with reference to Figure 11 A) and the second mold (not shown) injection molding slurry (step S101b), be cured.Afterwards, by the first mold and the second mold are carried out die sinking (step S101c), thereby obtain the first ceramic formation body 22A shown in Figure 15 and the second ceramic formation body 22B.
As shown in figure 15, the first ceramic formation body 22A have be formed with the first bend 18a(cup-shaped) and the shape of the first cylindrical portion 20a, especially be formed with to connecting with outstanding the 3rd cylindrical portion 90 of the projected direction equidirectional of the first cylindrical portion 20a with from the 3rd cylindrical portion 90 ends to the through hole 92 of the first bend 18a inboard at the first bend 18a, and the axis m4 of the axis n2 of the first cylindrical portion 20a and the 3rd cylindrical portion is parallel.In addition, the second ceramic formation body 22B have be formed with the second bend 18b(cup-shaped) and the shape of the second cylindrical portion 20b.
In the step S102 of Figure 14, make the second conjugant 58B shown in Figure 16 by engaging the first ceramic formation body 22A and the second ceramic formation body 22B.Particularly, hybrid ceramic powder, solvent, adhesive etc. and modulation engages slurry 60(step S102a) after, for example at composition surface 56a coating (supplys) joint slurry 60(of the first ceramic formation body 22A step S102b).Afterwards, align and crimping with the composition surface 56b of the second ceramic formation body 22B, obtain thus the second conjugant 58B shown in Figure 16.
In addition, in the step S103 of Figure 14, obtain sintered body (the second earthenware 10B) by burning till the second conjugant 58B.
In the manufacture method of this second earthenware 10B, make the first bend 18a of the first ceramic formation body 22A be formed with along the 3rd cylindrical portion 90 of the axis direction of the first cylindrical portion 20a, therefore engaging and burning till when becoming the second earthenware 10B through subsequently the first ceramic formation body 22A and the second ceramic formation body 22B, can illuminating part 12 easily form three capillary 70 near the position of the first capillary 14a, this three capillary 70 is identical with the bearing of trend of the first capillary 14a to the outside direction of extending of illuminating part 12 from this illuminating part 12 inside.In addition, need to not form the 3rd cylindrical portion 90 and through hole 92 and the first mold is carried out significantly design alteration or new driving mechanism etc. is set for the first bend 18a at the first ceramic formation body 22A, therefore can be in the situation that do not cause complicated, the maximization of manufacturing equipment to make the second earthenware 10B.Namely, the enough simple operations of energy, simple manufacturing equipment are made the second earthenware 10B, the second earthenware 10B has for three capillary 70 and through hole 72 to interior importing luminescent substance of illuminating part 12 etc., thereby can realize the reduction of manufacturing cost, the raising of productivity ratio and the raising of rate of finished products.
At this, the preferred version of the material that is used for the present embodiment manufacture method etc. is described.In addition, do not distinguish above-mentioned the first ceramic formation body 22A and the second ceramic formation body 22B and when calling, be simply referred to as " ceramic formation body 22 ", do not distinguish above-mentioned composition surface 56a and composition surface 56b and when calling, be simply referred to as " composition surface 56 ".
(ceramic formation body)
Prepare ceramic formation body 22 in above-mentioned manufacture method.The known existing the whole bag of tricks of the method for making of ceramic formation body 22 can use these class methods easily to obtain ceramic formation body.Method for making as ceramic formation body 22, for example can prepare by the gel casting forming method, described gel casting forming method is as follows: the shaping slurry that contains inorganic powder and organic compound to the mold casting, and by organic compound chemical reaction each other, after for example being cured by the chemical reaction between decentralized medium and gelling agent or gelling agent, it is carried out die sinking.This shaping slurry except material powder, also comprises decentralized medium, gelling agent, also can comprise for dispersant, the catalyst of adjusting viscosity or curing reaction.Below, these various compositions are described.
(material powder)
As the ceramic powders that is included in ceramic formation body 22, can the illustration aluminium oxide, aluminium nitride, zirconium dioxide, YAG(yttrium-aluminium-garnet) and these two or more mixture.As the sintering adjuvant that is used for improving agglutinating property or characteristic, can enumerate magnesium oxide, but preferably enumerate ZrO 2, Y 2O 3, La 2O 3And Sc 2O 3
[0081]
(decentralized medium)
As decentralized medium, preferably use reactive decentralized medium.For example, the preferred organic dispersion medium with reactive functional groups that uses.Have organic dispersion medium and the gelling agent chemical bond described later of reactive functional groups, namely preferably satisfy following two conditions: the liquid that is curable shaping slurry; And be any one material that can form the liquid state of the shaping slurry with high fluidity that is easy to cast molding.For with the gelling agent chemical bond, and solidified forming slurry, preferably have in molecule can be with reactive functional groups, namely form chemically combined functional group as hydroxyl, carboxyl, like that amino and gelling agent.
On the other hand, be easy to the shaping slurry with high fluidity of cast molding for formation, preferably use the alap organic dispersion medium of viscosity, especially, preferably use that viscosity is the material below 20cps at 20 ℃ of temperature.
In addition, with regard to polynary ethanol or polyacid, so long as do not make the significantly amount of tackify of shaping slurry, can effectively use in order to strengthen intensity.
(gelling agent)
Gelling agent is to cause with the reactive functional groups reaction that is included in decentralized medium can use following illustrative material by the material of curing reaction.
The gelling agent preferably viscosity at 20 ℃ of temperature is below 3000cps, and preferably selects following gelling agent: the reactive functional groups of gelling agent have reactive high isocyanic acid (Isocyanic acid) base (N=C=O) and/or different sulphur cyanogen (Isothiocyanate) base (N=C=S).
as the gelling agent with isocyanate group and/or isothiocyano, for example can enumerate, MDI(4, 4 '-diphenyl-methane-diisocyanate:4, 4 '-'-diphenylmethane diisocyanate) be isocyanic acid (resin), HDI(hexamethylene diisocyanate: hexamethylene diisocyanate) be isocyanates (resin), TDI(toluene diisocyanate: toluene di-isocyanate(TDI)) be isocyanic acid (resin), IPDI(Isophorone diisocyanate: IPDI) be isocyanic acid (resin), different sulphur cyanogen (resin) etc.These gelling agents, when solidifying, the contraction that generation is caused by the condensation reaction of resin, but especially, for the shaping when having the first capillary 14a and three capillary 70 the first ceramic formation body 22A of the second earthenware 10B, if the shrinkage when solidifying is large, makes the power of splitting between the first capillary 14a and three capillary 70 because contraction is applied in, thereby easily crack.For preventing this phenomenon, the contraction when preferably reducing as far as possible (below 3%) curing.In described gelling agent, be isocyanic acid if use MDI, can reduce (below 3%) dry contraction, therefore more preferably.
For the manufacture of the shaping slurry of ceramic formation body 22, can be illustrated in JP 2008-44344 communique or disclose the disclosed content of brochure in the world No. 2002/085590, for example can modulate as follows.At first, in decentralized medium the raw material dispersion powder as the shaping slurry after, add gelling agent, or add simultaneously material powder and gelling agent and it is disperseed as the shaping slurry at decentralized medium.If the viscosity of the shaping slurry under the operability when considering cast molding etc., 20 ℃ of temperature is preferably below 30000cps, more preferably below 20000cps.The viscosity of shaping slurry except the viscosity of above-mentioned reactive decentralized medium or gelling agent, can also be passed through powder kind, dispersion dosage, shaping slurry concentration (to the powder volume % of shaping slurry overall volume) adjustment.But the concentration of shaping slurry is preferably 25-75 volume % usually, if consider the less crackle that causes that shunk by drying, more elects 35-75 volume % as.
(joint slurry)
Obtain conjugant, need preparation for the joint slurry 60 that engages between a plurality of ceramic formation bodies 22.Engage slurry 60 and be preferably not the non-spontaneous hardening slurry that can solidify by chemical reaction.By using non-spontaneous indurative slurry, can easily keep the state of surface tension effects, can obtain the little junction surface of surface roughness (after dry and after sintering) by capillary effect thus.In addition, form the layer that engages slurry 60 under the state of surface tension effects, therefore easily control the shape of the layer that engages slurry 60, can control thus the section shape at the junction surface (after sintering) that finally obtains.
Engage slurry 60 except the material powder that can be used in the shaping slurry that has illustrated, non-reacted decentralized medium, can also use the various adhesives such as Pioloform, polyvinyl acetal (Polyvinyl acetals) resin and ethyl cellulose (ethyl cellulose).Dioctyl phthalate) etc. in addition, (2-ethylhexyl): dispersant or be used for when mixing is regulated the organic solvents such as the acetone (acetone) of viscosity or isopropyl alcohol (isopropanol) can suitably to use DOP(Phthalic acid bis.
Engaging slurry 60 can come mixed material powder, solvent, adhesive to obtain by the manufacture method of the common ceramic paste such as use three roller grinding machines (triroll mill), mill,pot (pot mill) or slurry.Suitably mixed dispersant or organic solvent.Particularly, can use butyl carbitol (Butyl carbitol), acetic acid butyl carbitol and terpinol (terpineol) etc.
(making of conjugant)
Then, engage with engaging slurry 60 two above ceramic formation bodies 22 preparing, thereby make conjugant.
(engaging the formation operation of pulp layer)
Obtain conjugant, at first between two above ceramic formation bodies 22 that will engage, composition surface 56 that will engage one another, keep the state of surface tension effects, thereby form the layer that consists of by engaging slurry 60.
About engaging slurry 60 to supplying with between the composition surface of ceramic formation body 22, can use the common practise such as distributor (dispenser), silk screen printing, metal mask printing.
To form by the state of keeping the surface tension effects that engages slurry 60 layer that is consisted of by this joint slurry 60, after supplying with joint slurry 60 between the composition surface 56 of ceramic formation body 22 or composition surface 56, do not carry out drying, just can and remain on predetermined distance between the composition surface 56 with ceramic formation body 22.This be because, have under non-spontaneous indurative situation engaging slurry 60, to composition surface 56 grades supply with engage slurries 60 after, before drying, easily keep within a certain period of time the state that surface tension can act on.
Keep in this way surface tension effects when engaging the state of slurry 60, distance between the composition surface 56 of adjusting or change ceramic formation body 22, or give vibration, or make its rotation, or ceramic formation body 22 relative bonding faces 56 are moved with the direction of level almost, can adjust thus the shape of the layer that engages slurry 60.Especially, by guarantee and the direction that intersects vertically of composition surface 56 on the load of machinery systems that applies and/or the distance between composition surface 56, the shape of the layer that engages slurry 60 can be easily controlled, the good sintered body (earthenware) without defectives such as bubbles can be accessed.
(drying process)
After forming the layer that engages slurry 60 between the composition surface 56 of opposed ceramic formation body 22, make the layer of this joint slurry 60 dry.Drying process can suitably be set according to the composition that engages slurry 60 or quantity delivered etc.Usually, can carry out about 5-120 minutes more than 40 ℃ and at the temperature below 200 ℃.
The conjugant that obtains by this way is following state: at least two ceramic formation bodies 22 engage by engaging 60 layers of dry junction surface of slurry (after dry).In addition, in the making of the conjugant of above-mentioned explanation, the situation that engages two ceramic formation bodies 22 is described, but be not limited to this, also can be with the ceramic formation body 22 more than three simultaneously or successively, engage layer engaging of slurry 60 by formations, thereby obtain conjugant.
(making of sintered body (earthenware))
Then, make agglutinating property composition sintering in ceramic formation body 22 and junction surface (after dry) by burning till conjugant, thereby obtain sintered body.Before sintering circuit, can carry out degreasing or calcining to conjugant.
Embodiment
［ the first embodiment ］
Measured make of the manufacture method of embodiment 1 and 2, comparative example 1-3, the crackle production of sintered body (earthenware), the leakage rate of illuminating part.
(embodiment 1)
Ten the first earthenware 10A shown in Figure 1 have been made according to manufacture method shown in Figure 7.
At first, as follows modulation be used for to be made the first ceramic formation body 22A and the second ceramic formation body 22B(with reference to Fig. 2) the shaping slurry.That is, will be as the alumina powder 100 weight sections of material powder and magnesium oxide (Magnesia) 0.025 weight section, as the polybasic ester 30 weight sections of decentralized medium, as 2 weight sections of the MDI resin 4 weight sections of gelling agent, dispersant, mix and obtain the slurry that is shaped as triethylamine (Triethylamine) the 0.2 weight section of catalyst.
At room temperature, after injecting this shaping slurry to first mold (with reference to Fig. 6 A) of aluminium alloy system and the second mold (not shown), at room temperature placed 1 hour, carry out die sinking after solidifying.And, in room temperature, then placed respectively 2 hours, thereby obtain ten the first ceramic formation body 22A and ten the second ceramic formation body 22B at 90 ℃ of temperature.In addition, to outer peripheral portion and the interior circumferential portion of each composition surface 56a and the 56b of the first ceramic formation body 22A and the second ceramic formation body 22B, implement chamfering (for example R face) and process in the scope of radius 0.05-0.15mm.
Modulation engages slurry 60 as follows.That is, will mix and form and engage slurry 60 as 8 weight sections of 30 weight sections of 100 weight sections of 0.025 weight section of the alumina powder 100 weight sections of material powder, magnesium oxide, terpinol, butyl carbitol, polyvinyl acetal resin.
As screen printing, used the emulsion thickness with 100 μ m, the mesh of #290, and had the screen printing of the annular patterns corresponding with the first ceramic formation body 22A composition surface 56a (internal diameter 12.8mm, external diameter 13.7mm).In addition, for example screen printing with composition surface 56a(internal diameter 12.5mm, the external diameter 14.0mm of the first ceramic formation body 22A) parallel mode is fixed on the platform of screen process press (stage), and carried out the aligned in position of screen process press and screen printing.Then, use screen printing by the composition surface 56a supply modulated joint slurry 60 of screen process press to the first ceramic formation body 22A.Afterwards, the composition surface 56A of crimping the first ceramic formation body 22A and the composition surface 56b of the second ceramic formation body 22B, and with dry 15 minutes of the drier of 95 ℃ of temperature, be produced in the first bend 18a and be formed with ten the first conjugant 58A(of through hole 52 with reference to Fig. 8).
Then, the first conjugant 58A of making in the above described manner in atmosphere and after calcining at 1200 ℃ of temperature, is burnt till in the atmosphere of hydrogen: nitrogen=3:1 and at 1800 ℃ of temperature, make its densification and printing opacity.Its result, as shown in Figure 1, obtain following sintered body (the first earthenware 10A): have the direction through hole 16 identical with the bearing of trend of the first capillary 14a that extends to the outside of illuminating part 12 from the inside of this illuminating part 12 in the position near the first capillary 14a of illuminating part 12, and the external diameter of illuminating part 12 is 11mm, and the first capillary and the second length capillaceous are 17m.As shown in Figure 3, through hole 16 is can make position Pa be positioned to off normal the mode of putting Pb positive direction 0.5mm to form.
The sintered body of resulting ten embodiment 1 (the first earthenware 10A) is all less than finding to have crackle or distortion.In water, quench is estimated the result of resistance to sudden heating, and each sintered body does not all crack at 150 ℃ of temperature, and is identical with the identical shaped earthenware level that there is no through hole 16.Further, to these sintered bodies, carry out blocking the through hole 16 that is formed on illuminating part 12 and the leakage rate of measuring illuminating part 12 with helium (He) leakage detector after resistance to sudden heating estimates, its as a result each 1 * 10 -8Atmcc/ is below second.In addition, as under the situation of luminous tube, confirmed that through hole 16 can not exert an influence to light transmission.This is by measuring intrinsic brilliance, its measured value whether design brightness (design load) 98% with on confirm, be 99.5% in this embodiment 1.
(embodiment 2)
According to manufacture method shown in Figure 14, made the sintered body (the second earthenware 10B) of ten embodiment 2 shown in Figure 9.
At first, modulate the shaping slurry in the mode identical with above-described embodiment 1, after at room temperature injecting this shaping slurry to first mold (with reference to Figure 11 A) of aluminium alloy system and the second mold (not shown), at room temperature placed 1 hour, and carry out die sinking after solidifying.And, in room temperature, then placed respectively 2 hours, obtain ten the first ceramic formation body 22A and ten the second ceramic formation body 22B at 90 ℃ of temperature.In this case, to outer peripheral portion and the interior circumferential portion of each composition surface 56a and the 56b of the first ceramic formation body 22A and the second ceramic formation body 22B, implement chamfering (for example R face) and process in the scope of radius 0.05-0.15mm.
Modulate in the mode identical with above-described embodiment 1 and engage slurry 60, and use screen printing by the composition surface 56a supply modulated joint slurry 60 of screen process press to the first ceramic formation body 22A.Screen printing is identical with the screen printing structure of embodiment 1.
Also have, the composition surface 56A of crimping the first ceramic formation body 22A and the composition surface 56b of the second ceramic formation body 22B, and with dry 15 minutes of the drier of 95 ℃ of temperature, made respectively at the first bend 18a be formed with ten the second conjugant 58B(of the 3rd cylindrical portion 90 and through hole 92 with reference to Figure 16).
Then, to the second conjugant 58B that makes in the above described manner, with embodiment 1 in the same manner, carry out standard and burn till and burn till and make its densification and printing opacity.Its result, as shown in Figure 9, obtain the second following earthenware 10B: the external diameter of illuminating part 12 is 11mm, the length of the first capillary 14a and the second capillary 14b is 17mm, the position near the first capillary 14a at illuminating part 12 has the projected direction three capillary 70 identical with the bearing of trend of the first capillary 14a, and has the hole (through hole 72) that connects from the top of three capillary 70 to illuminating part 12 inboards.The maximum length Lc(of three capillary 70 is with reference to Figure 13) be 8mm(Ld=21mm), as shown in figure 10, through hole 72 is can make position Pa be positioned to off normal the mode of putting Pb positive direction 0.5mm to form.
The sintered body of ten embodiment 2 that obtain is all less than finding to have crackle or distortion.In water, quench is estimated the result of resistance to sudden heating, and each sintered body does not all crack at 150 ℃ of temperature, and is identical with the identical shaped luminous tube level that there is no three capillary 70.Further, to these sintered bodies, after carrying out the resistance to sudden heating evaluation, measure the result of leakage rate with the helium leakage detector, each is 1 * 10 -8Atmcc/ is below second.In addition, as under the situation of luminous tube, confirmed that three capillary 70 and through hole 72 can not exert an influence to light transmission.This is by measuring intrinsic brilliance, its measured value whether design brightness (design load) 98% with on confirm, be 99.5% in this embodiment 2.
(comparative example 1)
Made the sintered body of ten comparative examples 1.At first, modulate the shaping slurry in the mode identical with above-described embodiment 1, and after at room temperature injecting this shaping slurry to the second mold of aluminium alloy system, at room temperature placed 1 hour, and carry out die sinking after solidifying.And, in room temperature, then placed respectively 2 hours, obtained 20 the second ceramic formation body 22B at 90 ℃ of temperature.Then, thus respectively therein each second bend 18b of side second a ceramic formation body 22B carry out by the Drilling operation of drill bit, the through hole that diameter is 0.3mm being set.
Afterwards, modulate in the mode identical with above-described embodiment 1 and engage slurry 60, the composition surface 56b of side second a ceramic formation body 22B supplies with modulated joint slurry 60 to use screen printing to distinguish wherein by screen process press.Then, the composition surface 56b of a pair of the second ceramic formation body 22B of crimping respectively, and with the drier drying of 95 ℃ of temperature 15 minutes, thereby made ten conjugants.Then, with the conjugant of making in the above described manner, in the mode identical with embodiment 1, carry out standard and burn till and burn till and the sintered body that obtains ten comparative examples 1.
The sintered body of ten comparative examples 1 that obtain is all less than finding to have crackle or distortion.But in water, quench is estimated the result of resistance to sudden heating, and each sintered body has produced crackle at 150 ℃ of temperature.Further, to these sintered bodies, after carrying out the resistance to sudden heating evaluation, measure the result of leakage rate with the helium leakage detector, each is 1 * 10 -8Atmcc/ is below second.
(comparative example 2)
Made the sintered body of ten comparative examples 2.At first, with comparative example 1 in the same manner, obtained 20 the second ceramic formation body 22B.Then, respectively to each second bend 18b of side second a ceramic formation body 22B wherein for example carry out by drill bit Drilling operation, the through hole that diameter is 0.9mm is set.
Afterwards, after engaging respectively a pair of the second ceramic formation body 22B, engage in the part of through hole and be in control ten conjugants by what ceramic formation body consisted of.Then, with the conjugant of making in the above described manner, with embodiment 1 in the same manner, carry out standard and burn till and burn till and the sintered body that obtains ten comparative examples 2.
The sintered body of ten comparative examples 2 that obtain is all less than finding to have crackle or distortion.But in water, quench is estimated the result of resistance to sudden heating, and each sintered body has produced crackle at 140 ℃ of temperature.Further, to these sintered bodies, after carrying out the resistance to sudden heating evaluation, measure the result of leakage rate with the helium leakage detector, have two sintered bodies to produce leakage in ten sintered bodies.
(comparative example 3)
With embodiment 1 in the same manner, made the sintered body (earthenware) of ten comparative examples 3 shown in Figure 17.In this comparative example 3, three capillary 70 is arranged at illuminating part 12 in the mode that the axis n1 of the axis m3 of this three capillary and the first capillary 14a intersects vertically.And the maximum length that makes three capillary 70 is 9mm.
Ten sintered bodies that obtain have produced bending in the sintering process of three capillary 70, thereby can't be to the interior importing luminescent substance of illuminating part 12 in the manufacturing process of luminous tube.
［ the second embodiment ］
For having and the embodiment 11-13 of embodiment 1 same structure, reference example 1 and 2 and have embodiment 14-16, reference example 3 and 4 with embodiment 2 same structures, confirmed the characteristic when the distance L b of the axis n1 of the axis m3 of the distance L a of the axis n1 of the axis m1 that makes through hole 16 and the first capillary 14a and three capillary 70 and the first capillary 14a changes.
(embodiment 11)
Made the sintered body of ten embodiment 11 in the mode identical with above-described embodiment 1.Except the distance L a with the axis n1 of the axis m1 of through hole 16 and the first capillary 14a is made as 0.55 times of illuminating part 12 first capillary external diameter Da, identical with the sintered body of embodiment 1.
(embodiment 12)
Made the sintered body of ten embodiment 12 in the mode identical with above-described embodiment 2.Except described distance L a being made as 0.7 times of illuminating part 12 first capillary external diameter Da, identical with the sintered body of embodiment 1.
(embodiment 13)
Made the sintered body of ten embodiment 13 in the mode identical with above-described embodiment 2.Except described distance L a being made as 0.85 times of illuminating part 12 first capillary external diameter Da, identical with the sintered body of embodiment 1.
(embodiment 14)
Made the sintered body of ten embodiment 14 in the mode identical with above-described embodiment 2.Except the distance L b with the axis n1 of the axis m3 of three capillary 70 and the first capillary 14a is made as 0.55 times of illuminating part 12 first capillary external diameter Da, identical with the sintered body of embodiment 2.
(embodiment 15)
Made the sintered body of ten embodiment 15 in the mode identical with above-described embodiment 2.Except described distance L b being made as 0.7 times of illuminating part 12 first capillary external diameter Da, identical with the sintered body of embodiment 2.
(embodiment 16)
Made the sintered body of ten embodiment 16 in the mode identical with above-described embodiment 2.Except described distance L b being made as 0.85 times of illuminating part 12 first capillary external diameter Da, identical with the sintered body of embodiment 2.
(reference example 1)
Made the sintered body of ten reference examples 1 in the mode identical with above-described embodiment 1.Except described distance L a being made as 0.5 times of illuminating part 12 first capillary external diameter Da, identical with the sintered body of embodiment 1.
(reference example 2)
Made the sintered body of ten reference examples 2 in the mode identical with above-described embodiment 1.Except described distance L a being made as 0.4 times of illuminating part 12 first capillary external diameter Da, identical with the sintered body of embodiment 1.
(reference example 3)
Made the sintered body of ten reference examples 3 in the mode identical with above-described embodiment 2.Except described distance L b being made as 0.5 times of illuminating part 12 first capillary external diameter Da, identical with the sintered body of embodiment 2.
(reference example 4)
Made the sintered body of ten reference examples 4 in the mode identical with above-described embodiment 2.Except described distance L b being made as 0.4 times of illuminating part 12 first capillary external diameter Da, identical with the sintered body of embodiment 2.
＜estimate＞
Estimate as follows.That is, use the sintered body obtain to make respectively luminous tube, each luminous tube carried out continuous bright light test, instrumentation be reduced to the time (as the effective time of light fixture performance function) of 80% when lighting a lamp beginning till constantly from the zero hour of lighting a lamp to brightness.
In addition, will be made as effective time of embodiment 11 the h(time), the ratio of observing embodiment 11 and embodiment 12-16, reference example 1-4.
(evaluation result)
Evaluation result is as shown in table 1.
[table 1]
? Basic structure Distance L a Distance L b Effective time
Reference example 1 Embodiment 1 Da×0.4 — 0.7h
Reference example 2 Embodiment 1 Da×0.5 — 0.8h
Reference example 3 Embodiment 2 — Da×0.4 0.7h
Reference example 4 Embodiment 2 — Da×0.5 0.8h
Reference example 11 Embodiment 1 Da×0.55 — h
Reference example 12 Embodiment 1 Da×0.7 — 1.2h
Reference example 13 Embodiment 1 Da×0.8 — 1.3h
Reference example 14 Embodiment 2 — Da×0.55 h
Reference example 15 Embodiment 2 — Da×0.7 1.2h
Reference example 16 Embodiment 2 — Da×0.8 1.3h
From this evaluation result as can be known, take embodiment 11 as benchmark, the effective time of embodiment 12-16 is elongated, and the life-span is elongated.On the other hand, the effective time of reference example 1-4 is shorter than embodiment 11.This is because the sealing of through hole 16 or through hole 72 becomes cold spot during bright light, and makes the sealing corrosion.Thereby as can be known, preferably through hole 16 or three capillary 70 are being set as upper/lower positions: at the distance L b of the axis n1 of the axis m3 of the distance L a of the axis n1 of illuminating part 12, axis m1 through hole 16 and the first capillary 14a or three capillary 70 and the first capillary 14a, in the position more than 0.55 times of the first capillary external diameter Da of illuminating part 12.
［ the 3rd embodiment ］
As shown in figure 12, for the embodiment 21-23, the reference example 11 and 12 that have with embodiment 2 same structures, confirmed the generation situation of the crackle when angle θ changes, described angle θ is: the outline line 80 when dissecing from the face that illuminating part 12 inner faces use is comprised three capillary 70 axis m3 and the relation of axis m3, the angle that tangent line 84 directions of this outline line 80 on outline line 80 and the intersection point 82 of axis m3 become with axis m3.
(embodiment 21)
Made the sintered body of ten embodiment 21 in the mode identical with above-described embodiment 2.Except adjusting the shape of flexure plane, the angle θ that tangent line 84 directions of the intersection point 82 of described outline line 80 and axis m3 are become with axis m3 is made as outside 30 °, and is identical with the sintered body of embodiment 2.
(embodiment 22)
Made the sintered body of ten embodiment 22 in the mode identical with above-described embodiment 2.Except the angle θ with described formation is made as 35 °, identical with the sintered body of embodiment 2.
(embodiment 23)
Made the sintered body of ten embodiment 22 in the mode identical with above-described embodiment 2.Except the angle θ with described formation is made as 45 °, identical with the sintered body of embodiment 2.
(reference example 11)
Made the sintered body of ten reference examples 11 in the mode identical with above-described embodiment 2.Except the angle θ with described formation is made as 20 °, identical with the sintered body of embodiment 2.
(reference example 12)
Made the sintered body of ten reference examples 11 in the mode identical with above-described embodiment 2.Except the angle θ with described formation is made as 25 °, identical with the sintered body of embodiment 2.
＜estimate＞
Estimate as follows: in the heatproof impact test of quench (150 ℃ of temperature), confirmed whether produced crackle at the through hole 72 of three capillary 70 and the border 86 of illuminating part 12 inner faces in the stage that obtains sintered body and in making water.In reference example 11 and 12, embodiment 21-23, confirmed the number that cracks in each ten sintered bodies.
(evaluation result)
In evaluation result shown in table 2.
[table 2]
? The angle θ that becomes Crackle
Reference example 11 20° 5/10
Reference example 12 25° 4/10
Reference example 21 30° Nothing
Reference example 22 35° Nothing
Reference example 23 40° Nothing
From evaluation result as can be known, the neither one sintered body has produced crackle on described border 86 in embodiment 21-23.On the other hand, in reference example 11, there are five to produce crackle in ten sintered bodies.In reference example 12, there are four to produce crackle in ten sintered bodies.Thereby the angle θ that becomes with axis m3 in tangent line 84 directions of the intersection point 82 of described outline line 80 and axis m3 as can be known, is preferably more than 30 °.
［ the 4th embodiment ］
For having embodiment 31-35, the reference example 21 and 22 of same structure with embodiment 2, as shown in figure 13, observed the characteristic when three capillary 70 is changed along the maximum length Lc of axis m3.
(embodiment 31)
Made the sintered body of ten embodiment 31 in the mode identical with above-described embodiment 2.Except the maximum length Lc with three capillary 70 is made as, from basic point 88 to first capillary 14a ends, along the length L d of axis n1 1/10 outside, identical with the sintered body of embodiment 2.
(embodiment 32)
Made the sintered body of ten embodiment 32 in the mode identical with above-described embodiment 2.Except the maximum length Lc with three capillary 70 be made as described length L d 2/10, identical with the sintered body of embodiment 2.
(embodiment 33)
Made the sintered body of ten embodiment 33 in the mode identical with above-described embodiment 2.Except the maximum length Lc with three capillary 70 be made as described length L d 3/10, identical with the sintered body of embodiment 2.
(embodiment 34)
Made the sintered body of ten embodiment 34 in the mode identical with above-described embodiment 2.Except the maximum length Lc with three capillary 70 be made as described length L d 4/10, identical with the sintered body of embodiment 2.
(embodiment 35)
Made the sintered body of ten embodiment 35 in the mode identical with above-described embodiment 2.Except the maximum length Lc with three capillary 70 be made as described length L d 5/10, identical with the sintered body of embodiment 2.
(reference example 21)
Made the sintered body of ten reference examples 21 in the mode identical with above-described embodiment 2.Except the maximum length Lc with three capillary 70 be made as described length L d 0.5/10, identical with the sintered body of embodiment 2.
(reference example 22)
Made the sintered body of ten reference examples 22 in the mode identical with above-described embodiment 2.Except the maximum length Lc with three capillary 70 be made as described length L d 6/10, identical with the sintered body of embodiment 2.
＜estimate＞
Estimate as follows.Namely, the same with above-mentioned the second embodiment, use resulting sintered body to make respectively luminous tube, each luminous tube is carried out the test of continuous bright light, instrumentation be reduced to time (effective time of bringing into play function as light fixture) till moment of 98% when lighting a lamp beginning to brightness from the zero hour of lighting a lamp.
In addition, will be made as effective time of embodiment 35 the h(time), observed embodiment 35 and embodiment 31-34, reference example 21,22 ratio.
(evaluation result)
Evaluation result is as shown in table 3.
[table 3]
Figure GDA00003007654800281
Figure GDA00003007654800291
From this evaluation result as can be known: take embodiment 35 as benchmark, the effective time of embodiment 31-34 is elongated, and the life-span is elongated.On the other hand, the effective time of reference example 22 is shorter than embodiment 35.This is because during bright light, the sealing of through hole 16 or through hole 72 becomes cold spot, and makes the sealing corrosion.In addition, in reference example 21, be difficult to carry out the sealing to through hole, its result has produced leakage in the initial stage of life test.
As mentioned above as can be known, preferably the maximum length Lc of three capillary 70 is made as from basic point 88 to first capillary 14a ends, along 1/10-5/10 of the length L d of axis n1.
［ the 5th embodiment ］
For having and the embodiment 41-43 of embodiment 1 same structure, reference example 21 and 22 and have embodiment 44-46, a reference example 23 and 24 with embodiment 2 same structures, Fig. 3 or position Pa relative position Pb shown in Figure 10 are changed, and confirmed the impact that through hole 16 or three capillary 70 and through hole 72 produce light transmission.
(embodiment 41)
Made the sintered body of ten embodiment 41 in the mode identical with above-described embodiment 1.As shown in Figure 3, will from the opening of the interior through hole 16 of illuminating part 12 from farthest point 35 of the axis n1 of the first capillary 14a, draw position on the axis n1 that forms perpendicular to the vertical line Ln of axis n1 and be made as Pa, the position on the first electrode 26A top on axis n1 is made as Pb, will be take position Pb as benchmark be made as positive direction, be made as negative direction towards the direction of the second capillary 14b towards the direction of the first capillary 14a, at this moment, can make the Pa mode identical with position Pb in position form through hole 16, in addition, the sintered body with embodiment 1 is identical.
(embodiment 42)
Made the sintered body of ten embodiment 42 in the mode identical with above-described embodiment 1.With embodiment 1 in the same manner, formed through hole 16 position Pa is positioned at off normal the mode of putting Pb positive direction 0.5mm.
(embodiment 43)
Made the sintered body of ten embodiment 43 in the mode identical with above-described embodiment 1.Except position Pa is positioned at off normal the mode of putting Pb positive direction 2mm to form the point of through hole 16, identical with the sintered body of embodiment 1.
(reference example 21)
Made the sintered body of ten reference examples 21 in the mode identical with above-described embodiment 1.Except position Pa is positioned at off normal the mode of putting Pb negative direction 0.5mm to form the point of through hole 16, identical with the sintered body of embodiment 1.
(reference example 22)
Made the sintered body of ten reference examples 22 in the mode identical with above-described embodiment 1.Except position Pa is positioned at off normal the mode of putting Pb negative direction 2mm to form the point of through hole 16, identical with the sintered body of embodiment 1.
(embodiment 44)
Made the sintered body of ten embodiment 44 in the mode identical with above-described embodiment 2.As shown in figure 10, except form the point of three capillary 70 and through hole 72 in the position Pa mode identical with position Pb, identical with the sintered body of embodiment 2.
(embodiment 45)
Made the sintered body of ten embodiment 45 in the mode identical with above-described embodiment 2.In the same manner as in Example 2, put the mode of Pb positive direction 0.5mm position Pa is positioned at off normal, formed three capillary 70 and through hole 72.
(embodiment 46)
Made the sintered body of ten embodiment 46 in the mode identical with above-described embodiment 2.Except position Pa is positioned at off normal the mode of putting Pb positive direction 2mm to form the point of three capillary 70 and through hole 72, identical with the sintered body of embodiment 2.
(reference example 23)
Made the sintered body of ten reference examples 23 in the mode identical with above-described embodiment 2.Except position Pa is positioned at off normal the mode of putting Pb negative direction 0.5mm to form the point of three capillary 70 and through hole 72, identical with the sintered body of embodiment 2.
(reference example 24)
Made the sintered body of ten reference examples 24 in the mode identical with above-described embodiment 2.Except position Pa is positioned at off normal the mode of putting Pb negative direction 2mm to form the point of three capillary 70 and through hole 72, identical with the sintered body of embodiment 2.
＜estimate＞
Estimate as follows.Namely, use resulting sintered body to make respectively luminous tube, each luminous tube has been measured intrinsic brilliance, and determined its measured value is compared low how many degree with the brightness (design load) of design, if measured value is at being judged to be more than 99% of design load " A ", if measured value is judged to be " B " design load more than 98% and less than 99%, if measured value design load be judged to be " C " more than 97% and less than 98%, if measured value is being judged to be " D " less than 97% of design load.
(evaluation result)
Evaluation result is as shown in table 4.
[table 4]
? Basic structure The position relationship of position pa relative position pb Estimate
Embodiment 41 Embodiment 1 0 B
Embodiment
42 Embodiment 1 +0.5mm A
Embodiment 43 Embodiment 1 +2mm A
Reference example 21 Embodiment 1 -0.5mm C
Reference example 22 Embodiment 1 -2mm D
Embodiment
44 Embodiment 2 0 B
Embodiment 45 Embodiment 2 +0.5mm A
Embodiment
46 Embodiment 2 +2mm A
Reference example 23 Embodiment 2 -0.5mm C
Reference example 24 Embodiment 2 -2mm D
From this evaluation result as can be known, in any one embodiment of embodiment 41-46, because of through hole 16(or three capillary 70 and through hole 72) formation the situation that illuminating part 12 light transmissions exert an influence is not almost had.Therefore, through hole 16 preferred (or three capillary 70 and through hole 72) ratio that is formed on illuminating part 12 is corresponding to the position near the first capillary 14a, the position of the first electrode 26A end that seals in the first capillary 14a as can be known, more preferably be arranged on than corresponding to the position of the first electrode 26A end to the first capillary 14a near the position more than 0.5mm.
In addition, earthenware of the present invention and manufacture method thereof are not limited to above-mentioned embodiment, certainly can adopt various structures in the situation that do not break away from purport of the present invention.

Claims (14)

1. an earthenware, be ceramic tube for high-intensity discharge lamp, and described earthenware has: illuminating part (12), and section carries out luminous within it; Electrode seals the first capillary (14a) and second capillary (14b) of use, is integrally formed in respectively the both sides of this illuminating part (12), it is characterized in that,
Position at close described first capillary (14a) of described illuminating part (12) has through hole (16), and the direction that this through hole (16) extends to the outside of described illuminating part (12) from the inside of this illuminating part (12) is identical with the bearing of trend of described the first capillary (14a).
2. earthenware claimed in claim 1, is characterized in that, the axis (m1) of described through hole (16) is parallel with the axis (n1) of described the first capillary (14a).
3. earthenware claimed in claim 1, it is characterized in that, described through hole (16) be formed on described illuminating part (12), than corresponding to by the position of the position (Pb) of electrode (26A) end of described the first capillary (14a) sealing near described the first capillary (14a).
4. earthenware claimed in claim 1, it is characterized in that, described through hole (16) be formed on described illuminating part (12) with upper/lower positions, namely the distance (La) of the axis (n1) of the axis (m1) of this through hole (16) and described the first capillary (14a) is in the position more than 0.55 times of described the first capillary (14a) external diameter (Da).
5. the described earthenware of any one in claim 1-4, it is characterized in that, with regard to described illuminating part (12), any one part the part of extending from the part of corresponding region of discharge (34) to described the first capillary (14a) or the part of extending from from the part of the described region of discharge of correspondence (34) to described the second capillary (14b) is flexure plane, and has described through hole (16) at this flexure plane.
6. an earthenware, be ceramic tube for high-intensity discharge lamp, and described earthenware has: illuminating part (12), and section carries out luminous within it; Electrode seals the first capillary (14a) and second capillary (14b) of use, is integrally formed in respectively the both sides of this illuminating part (12), it is characterized in that,
Position at close described first capillary (14a) of described illuminating part (12) has the projected direction three capillary (70) identical with the bearing of trend of described the first capillary (14a),
And have from described three capillary (70) top perforation to the inboard hole (72) of described illuminating part (12).
7. earthenware claimed in claim 6, is characterized in that, the axis (m3) of described three capillary (70) is parallel with the axis (n1) of described the first capillary (14a).
8. earthenware claimed in claim 6, it is characterized in that, described three capillary (70) be formed on described illuminating part (12), than corresponding to by the position of the position (Pb) of electrode (26A) end of described the first capillary (14a) sealing near described the first capillary (14a).
9. earthenware claimed in claim 6, it is characterized in that, described three capillary (70) be formed on described illuminating part (12) with upper/lower positions, namely the distance (Lb) of the axis (n1) of the axis (m3) of this three capillary (70) and described the first capillary (14a) is in the position more than 0.55 times of described the first capillary (14a) external diameter (Da).
10. earthenware claimed in claim 6, is characterized in that,
Outline line (80) when dissecing from the face that described illuminating part (12) inner face use is comprised described three capillary (70) axis (m3) and the relation of described axis (m3),
At angle (θ) that tangent line (84) direction of the intersection point (82) of the above outline line of described outline line (80) (80) and described axis (m3) becomes with described axis (m3) more than 30 °.
11. earthenware claimed in claim 6 is characterized in that,
In the time of becoming described three capillary (70) and be made as basic point (88) along the point of the benchmark of the maximum length (Lc) of its axis (m3),
The maximum length (Lc) of described three capillary (70) is, from described basic point (88) to described the first capillary (14a) end, along 1/10-5/10 of the length (Ld) of the axis (n1) of described the first capillary (14a).
12. the described earthenware of any one in claim 6-11, it is characterized in that, with regard to described illuminating part (12), any one part of extending from the part of corresponding region of discharge (34) to described the first capillary (14a) or the part of extending from the part of the described region of discharge of correspondence (34) to described the second capillary (14b) is flexure plane, and has described three capillary (70) at this flexure plane.
13. the manufacture method of an earthenware is made a ceramic tube for high-intensity discharge lamp by engaging a plurality of ceramic formation bodies, it is characterized in that,
Described manufacture method has the formed body production process and formed body engages operation,
In described formed body production process, make the first ceramic formation body (22A) and the second ceramic formation body (22B), wherein, described the first ceramic formation body (22A) one has the first bend (18a) and the first cylindrical portion (20a), and has along the through hole (16) of described the first cylindrical portion (20a) axis direction at described the first bend (18a); Described the second ceramic formation body (22B) one has the second bend (18b) and the second cylindrical portion (20b),
Engage in operation at described formed body, the end face (56b) of the end face (56a) of described the first bend (18a) by engaging described the first ceramic formation body (22A) and described second bend (18b) of described the second ceramic formation body (22B), make conjugant (58A)
And the axis (n2) of described first cylindrical portion (20a) of described the first ceramic formation body (22A) and the axis (m2) of described through hole (16) are parallel.
14. the manufacture method of an earthenware is made a ceramic tube for high-intensity discharge lamp by engaging a plurality of ceramic formation bodies, it is characterized in that,
Described manufacture method has the formed body production process and formed body engages operation,
In described formed body production process, it makes the first ceramic formation body (22A) and the second ceramic formation body (22B), wherein, the first ceramic formation body (22A) one has the first bend (18a) and the first cylindrical portion (20a), and having along the capillary (90) of described the first cylindrical portion (20a) axis direction at described the first bend (18a), and the hole (92) in having from described capillary (90) top perforation to described the first bend (18a); The second ceramic formation body (22B) one has the second bend (18b) and the second cylindrical portion (20b),
Engage in operation at described formed body, the end face (56b) of the end face (56a) of described the first bend (18a) by engaging described the first ceramic formation body (22A) and described second bend (18b) of described the second ceramic formation body (22B) is made conjugant (58A);
And the axis (n2) of described first cylindrical portion (18a) of described the first ceramic formation body (22A) is parallel with the axis (m4) of described capillary (90) and described hole (92).
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Application publication date: 20130612