CN1531004A - Luminescent container for superhigh voltage discharge light and end closing component therewith - Google Patents
Luminescent container for superhigh voltage discharge light and end closing component therewith Download PDFInfo
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- CN1531004A CN1531004A CNA2004100079363A CN200410007936A CN1531004A CN 1531004 A CN1531004 A CN 1531004A CN A2004100079363 A CNA2004100079363 A CN A2004100079363A CN 200410007936 A CN200410007936 A CN 200410007936A CN 1531004 A CN1531004 A CN 1531004A
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Abstract
Luminescent container for superhigh voltage discharge light and end closing component therewith, to prevent cracking of an envelope after inserting an electrode member into an end sealing member and sealing with a bond. The luminous container 8 for a high-pressure discharge lamp includes a tube body 6 with a discharge space 10 formed therein, and the end sealing member 7 for sealing an end of the tube body 6. The container 8 is manufactured by baking an assembly of the baked tube body 6 and a baked body 7 of the end sealing member. The end sealing member 7 has an outer end face 7f, an inner end face 7e facing the discharge space 10, and an electrode member slot 7d provided between the outer end face 7f and the inner end face 7e. A recess part 7c is formed in at least one of the outer end face 7f and the inner end face 7e.
Description
Technical field
The present invention relates to the end packaged unit of a kind of liminous container for high-voltage discharge lamp and this containers.
Background technology
In the liminous container for high-voltage discharge lamp that Japanese documentation 1 (spy opens flat 10-125230 communique) is put down in writing, make the formed body of the end packaged unit of the formed body of tube body and ring-type respectively, with these two kinds of formed bodies assembly that is assembled.And this assembly of sintering is enclosed the container that metal halide is used to make.The internal diameter big mode of profile when at this moment, both sintering shrinkages being set at the formed body of independent sintering end packaged unit during than the formed body of independent sintered pipes body.Like this, during sintering, because be to apply crimp force from tube body towards the end packaged unit, both joints are better, can keep higher air-tightness.
Invent technical problem to be solved
The inventor studies the back to the production in enormous quantities of this liminous container for high-voltage discharge lamp and finds following problem.To this, describe with reference to Figure 10.High-pressure discharge lamp shown in Figure 10 is made of tube body 6 and end packaged unit 12 with illuminating container 11.The medial surface 6a of tube body 6 is in the face of discharge space 10.End packaged unit 12 has body part 12b and annulus 12a.The body part 12b insertion tube body 6 of end packaged unit 12 open-ended is to be bonded into one.The maintaining part 9a of electrod assembly 9 inserts and is fixed among the electrod assembly patchhole 12d of end packaged unit 12.Electrode 9b is accommodated in the discharge space 10.Between the lateral surface of the medial surface of end packaged unit 12 and electrod assembly 9 by for example frit 14 sealing of grafting material.
, even in container 11, can not see the crack, in electrod assembly 9 insertion end packaged units 12 and after, also can on tube body 6, see the crack sometimes by grafting material 14 sealings.This moment, goods became defective goods, existed the problem that effective rate of utilization descends of making.
Technical problem to be solved by this invention is, provide a kind of have tube body and be arranged on end packaged unit in the opening of tube body, for the container that the sintering of the assembly that is sintered body that is sintered body and end packaged unit by tube body forms, suppress electrod assembly and be inserted in the packaged unit of end and and produce the crack by the container after the grafting material sealing.
Summary of the invention
The present invention is the ceramic liminous container for high-voltage discharge lamp, have the tube body that forms discharge space and be arranged on end packaged unit in the opening of this tube body, the sintering of the assembly that is sintered body that is sintered body and end packaged unit by tube body is made, it is characterized in that, the end packaged unit has outside end face, in the face of the inner side end of discharge space be arranged on electrod assembly patchhole between outside end face and inner side end, formation recess at least one of side end face and inner side end outside.
In addition, the present invention together constitutes the end packaged unit of liminous container for high-voltage discharge lamp for the tube body with the formation discharge space, it is characterized in that, the sintering of the assembly that is sintered body that is sintered body and end packaged unit by tube body is made liminous container for high-voltage discharge lamp, the end packaged unit has outside end face, in the face of the inner side end of discharge space be arranged on electrod assembly patchhole between outside end face and the inner side end, formation recess at least one of side end face and inner side end outside.
Reasons of cracks takes place and studies for the end packaged unit that electrod assembly is inserted container and with after the grafting material sealing in the inventor on the outer peripheral portion container of electrod assembly, following discovery is arranged.That is, as Figure 10, shown in Figure 11, the crack is main many in the terminal part A place appearance of tube body 6 with the bonding part of end packaged unit 12.For this reason, near the situation the research A is found the situation that grafting material 15 soaks into A.This means that grafting material 14 overflows from the electrod assembly patchhole 12d of end packaged unit 12, soak into inner side end 12e, further arrive the internal face 6a of tube body 6.The infiltration of the internal face 6a of this tube body 6 can be thought following generation.That is, the retention time too high or under maximum temperature of the maximum temperature during joint is long, and as shown in Figure 10, grafting material 14 is moving along wall flow on very big face, finally arrives the internal face 6a of tube body 6 sometimes.In addition, grafting material 14 is too much the time, and similarly a part arrives the internal face 6a of tube body 6 sometimes as shown in figure 11.
At this, end packaged unit 12 and tube body 6 connect by the differential pressure of sintering shrinkage as previously mentioned.For this reason, along both bonding parts, residual stress, and also remaining fine gap.When the part of grafting material flows in this gap, become the reason that the crack takes place with this residual stress effect sometimes.Particularly, according to engaging condition, in grafting material 14, can generate the coefficient of thermal expansion low crystallization of coefficient of thermal expansion than the pottery that constitutes tube body 6.At this moment, closing step or when lighting lamp further makes the crack be easy to generate.
To this, in the present invention, by at least one of the inner side end of end packaged unit 12 and outside end face, establishing recess, in the fusion operation, absorb the part of grafting material, make grafting material be difficult for arriving the internal face 6a of tube body 6, thus successful inhibition the crack.
Description of drawings
Fig. 1 schematically illustrates electrod assembly 9 of one embodiment of the invention and the cutaway view under the container 8B fixed engagement state,
Fig. 2 is the cutaway view that the container 8 of one embodiment of the invention schematically is shown,
Fig. 3 schematically illustrates electrod assembly 9 of another embodiment of the present invention and the cutaway view under the container 8A fixed engagement state,
Fig. 4 schematically illustrates electrod assembly 9 of further embodiment of this invention and the cutaway view under the container 8 fixed engagement states,
Fig. 5 for schematically illustrate shaping end packaged unit be sintered body the time used patrix 1 and the cutaway view of counterdie 2,
Fig. 6 is the cutaway view that illustrates under patrix 1 and counterdie 2 confined states,
Fig. 7 is the cutaway view that the formed body 4 of the end packaged unit after the demoulding is shown,
Fig. 8 is the cutaway view of the formed body 5 of formed body 4 that the end packaged unit schematically is shown and tube body,
Cutaway view under the state of Fig. 9 when schematically illustrating the formed body 5 of the formed body 4 insertion tube bodies of end packaged unit open-ended,
The cutaway view that Figure 10 passes through under grafting material 14,15 engagement states for the container 11 that electrod assembly 9 relative reference examples schematically are shown,
The cutaway view that Figure 11 passes through under grafting material 14,15 engagement states for the container 11 that electrod assembly 9 relative reference examples schematically are shown.
Embodiment
Below, illustrate in greater detail the present invention with reference to the accompanying drawings.Fig. 1 is the cutaway view that the liminous container for high-voltage discharge lamp 8 of one embodiment of the invention is shown, and the state after electrod assembly 9 is fixed is shown.Fig. 2 illustrates electrod assembly 9 fixing preceding containers 8.This routine container 8 is made of end packaged unit 7 and tube body 6.The medial surface 6a of tube body 6 is in the face of discharge space 10.End packaged unit 7 has body part 7b and annulus 7a.The body part 7b insertion tube body 6 of end packaged unit 7 open-ended is to be bonded into one.The maintaining part 9a of electrod assembly 9 inserts and is fixed among the electrod assembly patchhole 7d of end packaged unit 7.Electrode 9b is accommodated in the discharge space 10.Pass through for example frit 14 sealings of grafting material between the lateral surface of the medial surface of end packaged unit 7 and electrod assembly 9.
In this example, the inner side end 7e of end packaged unit 7 is general planar, but forms the roughly recess 7c of ring-type on the end face 7f of the outside.And, in engaging operation,, be difficult for arriving the internal face 6a of tube body 6 in recess 7c because mobile grafting material is absorbed, can reduce the crack incidence of tube body 6 thus.
Liminous container for high-voltage discharge lamp 8A shown in Figure 3 is made of end packaged unit 7A and tube body 6.In this routine end packaged unit 7A, be not provided with recess on the 7f of side end face outside, and be general planar.Facing of end packaged unit 7A is formed with the annular recessed portion 7g that surrounds electrod assembly patchhole 7d on the inner side end 7e of discharge space 10.Thus, in engaging operation, mobile grafting material 14 is difficult for arriving tabular surface 7e, thereby is difficult for arriving the internal face 6a of tube body 6.
Liminous container for high-voltage discharge lamp 8B shown in Figure 4 is made of end packaged unit 7B and tube body 6.In this routine end packaged unit 7B, go up the annular recessed portion 7g of formation encirclement electrod assembly patchhole 7d in the face of the inner side end 7e of discharge space 10.Form the roughly recess 7c of ring-type outside on the 7f of side end face.Thus, in engaging operation, mobile grafting material 14 is difficult for arriving tabular surface 7e, thereby is difficult for arriving the diapire face 6a of tube body 6.
In preferred embodiment, recess is arranged to surround the ring-type of electrod assembly patchhole 7d.In engaging operation, this shape is effective in that mobile grafting material can not be arrived aspect the tube body 6.
In preferred embodiment, recess is that comparative electrode parts patchhole is provided with continuously.
Constitute not special qualification of pottery of container, but preferably relative halogen is that corrosive gas has corrosion proof pottery.Suitable especially is aluminium oxide, yttria, yttrium pyralspite, aluminium nitride.
There is no particular limitation for the material of electrod assembly and form.The material of electrod assembly is refractory metal or conductivity pottery preferably.As refractory metal preferably include from the group who constitutes by molybdenum, tungsten, rhenium, hafnium, niobium and tantalum, select more than one metal or comprise the alloy of this metal.
There is no particular limitation for concave depth., in engaging operation, from absorbing mobile grafting material and suppressing the viewpoint consideration that this material arrives tube body 6, preferably more than the 0.2mm, 0.4mm is above better for concave depth.And the upper limit of recess depths is not particularly limited.Consider that from the productive viewpoint that adds man-hour concave depth is preferably in below the 0.3mm.
There is no particular limitation for the kind of grafting material, preferably so-called sintered glass, and suitable especially is the glass of the composition system of Al2O3-CaO-Y2O3-SrO system.
When using the sintered glass of composition system of Al2O3-CaO-Y2O3-SrO system, the engaging condition difference according to after the fusion generates 12CaO7Al sometimes
2O
3Crystallization.For example the thermal coefficient of expansion of alumina tube is 6.8 * 10
-6/ ℃, 12CaO7Al
2O
3The thermal coefficient of expansion of d is 5.98 * 10
-6/ ℃, can produce goodish thermal expansion difference.
Below, the manufacture process that is suitable for is described.As shown in Figure 5, prepare patrix 1 and counterdie 2, in counterdie 2, take in powder 3.Projection 1a is set on the die face of patrix 1.As shown in Figure 6, with patrix 1 and counterdie 2 nested and assemblings.The shape of projection 1a becomes the shape that for example can form recess 7c shown in Figure 1.The pressure of this moment is determined according to the kind of powder.Then, patrix 1 is separated with counterdie 2, make formed body 4 demouldings.Formed body 4 has annulus 4a, body part 4b, through hole 4d and recess 4c.
Then, as shown in Figure 8, the end with the opening 5a of the formed body 5 of the body part 4b insertion tube body 6 of formed body 4 becomes state shown in Figure 9, to obtain assembly.Sintering assembly 20 is to obtain container for example shown in Figure 1.
In this example, formed body 4 and 5 is assembled, obtained assembly 20, and sintering assembly 20.But in the present invention, the body that is sintered that is sintered body, tube body of end packaged unit can be formed body roasting body in addition separately, also can be the degreasing body.
In sintering circuit, the external diameter of the internal diameter when making the formed body of independent sintered pipes body during than the formed body of independent sintering end packaged unit is little.Like this, during sintering, from tube body the end packaged unit is applied crimp force, both have been improved air-tightness by firmly crimping.According to this viewpoint, the independent ratio (RO/RI) of the internal diameter RI the during formed body of sintered pipes body relatively separately of the external diameter RO the during formed body of sintering end packaged unit, under the situation that crack of bonding part etc. is also taken into account, be preferably in more than 1.005, be more preferably more than 1.010.In addition, preferably RO is below 1.100 of RI, is more preferably below 1.080, and is particularly more remarkable in 1.060 following effects.
Example (example 1)
With reference to the step of Fig. 5～Fig. 9 explanation, make container 8 shown in Figure 1.Being specially, is to add magnesium oxide 750ppm, polyvinyl alcohol 2 weight %, polyethylene glycol 0.5 weight %, water 50 weight portions in the high-purity mangesium oxide aluminium powder more than 99.9% in purity, is pulverized 1 hour and is mixed by ball mill.With spray drier with mixture under the temperature about 200 ℃, drying and granulation obtain that average grain diameter is about 70 μ m, quiet bulk density is 0.7g/cm
3Prilling powder.
With this prilling powder at 2000kg/cm
2Pressure under press forming, obtain formed body 4,5 shown in Figure 8.At this moment, for the external diameter RO behind the formed body 4 that makes independent sintering end packaged unit 7 relatively separately the ratio (RO/RI) of the internal diameter RI behind the formed body 5 of sintered pipes body 6 become 1.040, adjusted both sizes.
Next, the formed body of using at 1200 ℃ of following roasting end packaged units 4 is to shrink its size.End with the roasting body inserts formed body 5 as shown in Figure 9 obtains assembly 20.At 1200 ℃ of following roasting assemblies, the formed body 5 that tube body is used shrinks, and the roasting body of using from 5 pairs of end packaged units of formed body applies crimp force.Then, at 1800 ℃ of following sintering assemblies, end packaged unit and tube body are engaged securely.
The external diameter of end packaged unit 7 is 10.0mm, and the diameter of recess 7c is 7.0mm, and the degree of depth is 0.3mm.Measure the internal diameter of its each several parts for the tube body 6 of such acquisition, find with the bonding part A of end packaged unit near internal diameter broaden.The maximum of this internal diameter and the difference of minimum value are 0.2mm.
Then, in the electrod assembly 9 insertion electrod assembly patchhole 7d with Nb system (entirely following be the Nb system), and engage with grafting material.As grafting material, using Al-Ca-Y-Sr is sintered glass.Its composition is made as Al
2O
3: 45 weight %, CaO:40%, Y
2O
3: SrO:10% 5%.The melting point of glass is 1370 ℃ ± 10 ℃.Being 1440 ℃ in maximum temperature engages under 5 minutes the condition of maintenance down.To the conjugant that is obtained, observation has free from flaw.Made 12 samples, the crack that observes is 0.
Example 2
According to the order that reference Fig. 5～Fig. 9 is described, made container 8A shown in Figure 3.Being specially, is to add magnesium oxide 750ppm, polyvinyl alcohol 2 weight %, polyethylene glycol 0.5 weight %, water 50 weight portions in the high-purity mangesium oxide aluminium powder more than 99.9% in purity, by ball mill pulverize 1 hour, mix.With spray drier with mixture under the temperature about 200 ℃, drying and granulation obtain that average grain diameter is about 70 μ m, quiet bulk density is 0.7g/cm
3Prilling powder.
With this prilling powder at 2000kg/cm
2Pressure under press forming, obtain formed body 4,5 shown in Figure 8.But, do not establish recess at the outside end face of end packaged unit 7A, as shown in Figure 3, form recess 7g in inner side end 7e side.Adjust both sizes so that the ratio (RO/RI) of the internal diameter RI behind the formed body 5 of the independent relatively sintered pipes body 6 of the external diameter RO behind the formed body 4 of independent sintering end packaged unit 7A becomes 1.040.
Next, the formed body of using at 1200 ℃ of following roasting end packaged units 4 is to shrink its size.End with the roasting body inserts formed body 5 as shown in Figure 9 obtains assembly 20.At 1200 ℃ of following roasting assemblies, the formed body 5 that tube body is used shrinks, and the roasting body of using from 5 pairs of end packaged units of formed body applies crimp force.Then, at 1800 ℃ of following sintering assemblies, end packaged unit and tube body are engaged securely.
The external diameter of end packaged unit 7A is 10.0mm, and the diameter of recess 7g is 7.0mm, and the degree of depth is 0.3mm.The tube body 6 of such acquisition is measured the internal diameter of its each several parts, find with the bonding part A of end packaged unit near internal diameter broaden.The maximum of this internal diameter and the difference of minimum value are 0.2mm.
Then, the electrod assembly 9 of molybdenum system is inserted in the electrod assembly patchhole 7d, and engage with grafting material.As grafting material, using Al-Ca-Y-Sr is sintered glass.It consists of A1
2O 3: 45 weight %, CaO:40%, Y
2O
3: SrO:10% 5%.The melting point of glass is 1370 ℃ ± 10 ℃.Being 1440 ℃ in maximum temperature engages under 2 minutes the condition of maintenance down.To the conjugant that is obtained, observation has free from flaw.Make 12 samples, the crack that observes is 0.
Comparative example 1
The order that is described according to reference Fig. 5～Fig. 9 is made Figure 10, container 11 shown in Figure 11.Production order and embodiment 1,2 are same, but do not form aforementioned recess on the packaged unit of end.
Behind the joint, the external diameter of end packaged unit 11 is 10mm.The tube body 6 of such acquisition is measured the internal diameter of its each several parts, find with the bonding part A of end packaged unit near internal diameter broaden.The maximum of this internal diameter and the difference of minimum value are 0.2mm.
Then, the electrod assembly 9 of molybdenum system is inserted in the electrod assembly patchhole 7d, and engage with grafting material.As grafting material, using Al-Ca-Y-Sr is sintered glass.It consists of Al2O3:45 weight %, CaO:40%, Y2O3:5%, SrO:10%.The melting point of glass is 1370 ℃ ± 10 ℃.Being 1440 ℃ in maximum temperature engages under 5 minutes the condition of maintenance down.To the conjugant that is obtained, observation has free from flaw.Made 12 samples, the crack that observes has 10.
The effect of invention
As above-mentioned, according to the present invention, in the end-enclosed section with tube body and its end of sealing The burning of part and the assembling body that is sintered body that is sintered body and end-enclosed parts by tube body In the container of tying and making, can suppress to insert electrod assembly in the packaged unit of end and use joint The crack takes place in the container after the material sealing.
Claims (8)
1. liminous container for high-voltage discharge lamp, be a kind of tube body with formation discharge space, end packaged unit with the end of sealing this tube body, and the ceramic container used of the high-pressure discharge lamp made of the sintering of the assembly that is sintered body that is sintered body and described end packaged unit by described tube body, it is characterized in that, described end packaged unit has outside end face, in the face of the inner side end of described discharge space and be arranged on described outside end face and described inner side end between the electrod assembly patchhole, be formed with recess at least one side of described outside end face and described inner side end.
2. according to the described container of claim 1, it is characterized in that described recess is arranged on the end face of the described outside.
3. according to the described container of claim 1, it is characterized in that described recess is arranged on the described inner side end.
4. according to the arbitrary described container of claim 1～3, it is characterized in that described recess is arranged to surround the ring-type of described electrod assembly patchhole.
5. end packaged unit, this end packaged unit together constitutes liminous container for high-voltage discharge lamp with the tube body that forms discharge space, it is characterized in that, the sintering of the assembly that is sintered body that is sintered body and described end packaged unit by described tube body is made described container, described end packaged unit have outside end face, in the face of the inner side end of described discharge space and be arranged on described outside end face and described inner side end between the electrod assembly patchhole, at least one side of described outside end face and described inner side end, be formed with recess.
6. according to the described end of claim 5 packaged unit, it is characterized in that described recess is arranged on the end face of the described outside.
7. according to the described end of claim 5 packaged unit, it is characterized in that described recess is arranged on the described inner side end.
8. according to the arbitrary described end of claim 5～7 packaged unit, it is characterized in that described recess is arranged to surround the ring-type of described electrod assembly patchhole.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2003059690A JP4446430B2 (en) | 2003-03-06 | 2003-03-06 | Luminescent container for high pressure discharge lamp |
| JP2003059690 | 2003-03-06 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1531004A true CN1531004A (en) | 2004-09-22 |
| CN1280869C CN1280869C (en) | 2006-10-18 |
Family
ID=33122435
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200410007936 Expired - Fee Related CN1280869C (en) | 2003-03-06 | 2004-03-05 | Luminescent container for superhigh voltage discharge light and end closing component therewith |
Country Status (2)
| Country | Link |
|---|---|
| JP (1) | JP4446430B2 (en) |
| CN (1) | CN1280869C (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2012016389A1 (en) * | 2010-08-06 | 2012-02-09 | 潮州市晨歌电光源有限公司 | Ceramic metal halide lamp shell |
| CN101364523B (en) * | 2007-08-08 | 2012-06-27 | 优志旺电机株式会社 | Discharge lamp |
| CN103137423A (en) * | 2011-12-05 | 2013-06-05 | 欧司朗股份有限公司 | Ceramic metal halogenating lamp with improved frit seal portion |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2008269956A (en) * | 2007-04-20 | 2008-11-06 | Ushio Inc | Discharge lamp |
| US7710038B2 (en) * | 2007-12-21 | 2010-05-04 | Osram Sylvania Inc. | Ceramic discharge vessel having molybdenum alloy feedthrough |
-
2003
- 2003-03-06 JP JP2003059690A patent/JP4446430B2/en not_active Expired - Fee Related
-
2004
- 2004-03-05 CN CN 200410007936 patent/CN1280869C/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101364523B (en) * | 2007-08-08 | 2012-06-27 | 优志旺电机株式会社 | Discharge lamp |
| WO2012016389A1 (en) * | 2010-08-06 | 2012-02-09 | 潮州市晨歌电光源有限公司 | Ceramic metal halide lamp shell |
| CN103137423A (en) * | 2011-12-05 | 2013-06-05 | 欧司朗股份有限公司 | Ceramic metal halogenating lamp with improved frit seal portion |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1280869C (en) | 2006-10-18 |
| JP2004273187A (en) | 2004-09-30 |
| JP4446430B2 (en) | 2010-04-07 |
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