JPH03102758A - Electric bulb and manufacture thereof - Google Patents
Electric bulb and manufacture thereofInfo
- Publication number
- JPH03102758A JPH03102758A JP23963389A JP23963389A JPH03102758A JP H03102758 A JPH03102758 A JP H03102758A JP 23963389 A JP23963389 A JP 23963389A JP 23963389 A JP23963389 A JP 23963389A JP H03102758 A JPH03102758 A JP H03102758A
- Authority
- JP
- Japan
- Prior art keywords
- gas
- spherical part
- spherical
- tube
- filled tube
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 238000004519 manufacturing process Methods 0.000 title claims description 15
- 238000007789 sealing Methods 0.000 claims abstract description 12
- 238000000926 separation method Methods 0.000 claims description 5
- 230000008878 coupling Effects 0.000 abstract 1
- 238000010168 coupling process Methods 0.000 abstract 1
- 238000005859 coupling reaction Methods 0.000 abstract 1
- 238000005538 encapsulation Methods 0.000 abstract 1
- 230000004927 fusion Effects 0.000 abstract 1
- 239000007789 gas Substances 0.000 description 58
- 238000000034 method Methods 0.000 description 13
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 8
- 229910001507 metal halide Inorganic materials 0.000 description 7
- 150000005309 metal halides Chemical class 0.000 description 7
- PRPINYUDVPFIRX-UHFFFAOYSA-N 1-naphthaleneacetic acid Chemical compound C1=CC=C2C(CC(=O)O)=CC=CC2=C1 PRPINYUDVPFIRX-UHFFFAOYSA-N 0.000 description 6
- 239000011521 glass Substances 0.000 description 6
- 238000001816 cooling Methods 0.000 description 5
- 239000011265 semifinished product Substances 0.000 description 5
- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical compound [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 description 4
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 4
- 239000011888 foil Substances 0.000 description 4
- 239000011261 inert gas Substances 0.000 description 4
- 239000007788 liquid Substances 0.000 description 4
- 229910052751 metal Inorganic materials 0.000 description 4
- 239000002184 metal Substances 0.000 description 4
- 229910052757 nitrogen Inorganic materials 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- QSHDDOUJBYECFT-UHFFFAOYSA-N mercury Chemical compound [Hg] QSHDDOUJBYECFT-UHFFFAOYSA-N 0.000 description 3
- 229910052753 mercury Inorganic materials 0.000 description 3
- 229910001511 metal iodide Inorganic materials 0.000 description 3
- ZOKXTWBITQBERF-UHFFFAOYSA-N Molybdenum Chemical compound [Mo] ZOKXTWBITQBERF-UHFFFAOYSA-N 0.000 description 2
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 2
- 229910052786 argon Inorganic materials 0.000 description 2
- 229910002092 carbon dioxide Inorganic materials 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 229910052750 molybdenum Inorganic materials 0.000 description 2
- 239000011733 molybdenum Substances 0.000 description 2
- 230000002411 adverse Effects 0.000 description 1
- 239000001569 carbon dioxide Substances 0.000 description 1
- 238000001704 evaporation Methods 0.000 description 1
- 230000008020 evaporation Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- WFKWXMTUELFFGS-UHFFFAOYSA-N tungsten Chemical compound [W] WFKWXMTUELFFGS-UHFFFAOYSA-N 0.000 description 1
- 229910052721 tungsten Inorganic materials 0.000 description 1
- 239000010937 tungsten Substances 0.000 description 1
- 125000000391 vinyl group Chemical group [H]C([*])=C([H])[H] 0.000 description 1
- 229920002554 vinyl polymer Polymers 0.000 description 1
Landscapes
- Manufacture Of Electron Tubes, Discharge Lamp Vessels, Lead-In Wires, And The Like (AREA)
Abstract
Description
【発明の詳細な説明】
本発明電球及び電球の製造方法を以下の項目に従って説
明する。DETAILED DESCRIPTION OF THE INVENTION The light bulb and method for manufacturing the light bulb of the present invention will be explained according to the following items.
Ａ．産業上の利用分野
Ｂ．発明の概要
Ｃ．従来技術［第６図］
Ｄ．発明が解決しようとする課題
Ｅ．課題を解決するための手段
Ｆ．実施例［第１図乃至第５図］
ａ．メタルハライド電球［第１図］
ｂ．チップオフ
ｂ−１．半完成品
ｂ−２．チップオフ装置
ｂ−３．チップオフ工程
Ｇ．発明の効果
（Ａ．産業上の利用分野）
本発明は新規な電球及び電球の製造方法に関する。詳し
くは、ガス封入管のチップオフ部をすっきりとさせて球
体部の内部形状を安定させた新規な電球とそのような電
球を容易に製造することができる新規な電球の製造方法
を提供しようとするものである．
（Ｂ．発明の概要）
本発明電球は、ガスが封入された球体部のガス封入管分
離部が球形状に略沿った形状とされ、これによって、球
体部の内部の形状が極端な凹凸のないものとなり、安定
した点灯を得ることができ、また、本発明電球の製造方
法は、球体部と連通され球体部から上方へ延びたガス封
入管内に封入ガスを入れた状態で球体部を冷却して上記
ガスを球体部内Ｃ所望量収容させた後、球体部とガス封
入管との連結部にレーザー光を照射して該部分を局部的
に加熱溶融し、球体部のガス封入管連結部を密封すると
共にガス封入管を球体部から分離するようにすることに
よって、球体部とガス封入管との境界部を局部的に溶融
して該部分を封止すると共に球体部とガス封入管とを分
離することができるので、球体部の内面形状に極端な凹
凸が生じることがなく、また、ガス封入管の球体部から
の分離を短時間で行なうことができる。A. Industrial application field B. Summary of the invention C. Prior art [Figure 6] D. Problem to be solved by the inventionE. Means for solving problemsF. Example [Figures 1 to 5] a. Metal halide light bulb [Figure 1] b. Chip off b-1. Semi-finished product b-2. Tip-off device b-3. Chip-off process G. Effects of the Invention (A. Field of Industrial Application) The present invention relates to a novel light bulb and a method for manufacturing the light bulb. Specifically, the present invention aims to provide a new light bulb in which the tip-off part of the gas-filled tube is made neat and the internal shape of the spherical part is stabilized, and a new light bulb manufacturing method that makes it possible to easily produce such a light bulb. It is something to do. (B. Summary of the Invention) In the light bulb of the present invention, the gas-filled tube separation portion of the spherical portion filled with gas has a shape that roughly follows the spherical shape, so that the internal shape of the spherical portion has no extreme unevenness. In addition, the method for manufacturing the light bulb of the present invention cools the bulb while filling a gas-filled tube that communicates with the bulb and extends upward from the bulb. After the desired amount of the gas is accommodated in the spherical part, the connecting part between the spherical part and the gas-filled tube is irradiated with a laser beam to locally heat and melt the part, and the gas-filled tube connecting part of the spherical part is removed. By sealing the gas-filled tube and separating the gas-filled tube from the spherical portion, the boundary between the spherical portion and the gas-filled tube is locally melted to seal this portion, and the spherical portion and the gas-filled tube are separated. Since the spherical part can be separated from the spherical part, extreme unevenness does not occur on the inner surface of the spherical part, and the gas-filled tube can be separated from the spherical part in a short time.
（Ｃ．従来技術）［第６図］
従来のメタルハライド電球及びその製造方法につき説明
する。(C. Prior Art) [Fig. 6] A conventional metal halide light bulb and its manufacturing method will be explained.
ａはガラス製の発光管である。A is a glass arc tube.
ｂはガラス製のガス封入管であり、下端部に形成された
細径部Ｃの下端が発光管ａの上部中央に連設されている
。b is a gas-filled tube made of glass, and the lower end of a narrow diameter portion C formed at the lower end is connected to the upper center of the arc tube a.
そして、図示しない金属沃化物粒及び水銀を発光管ａ内
に封入すると共に、アルゴンガス等の不活性ガスをガス
封入管ｂを通して発光管ａに封入した後、ガス封入管ｂ
をその下端゛で切り離すと共に発光管ａのガス封入管ｂ
が連設されていた部分を封止する。Then, metal iodide grains (not shown) and mercury are sealed in the arc tube a, and an inert gas such as argon gas is sealed in the arc tube a through the gas-filled tube b.
is cut off at its lower end, and the gas-filled tube b of the arc tube a is separated.
Seal the part where it was connected.
上記のように、発光管ａからガス封入管ｂを切り離し、
かつ、発光管ａを密閉する工程、いわゆるチップオフ工
程は、発光管ａとガス封入管ｂとの連結部分をバーナー
炎で加熱し、該部分が溶融したところで、ガス封入管ｂ
を発光管ａから引き離す方向に移動させることによって
行なってぃた．
（Ｄ．発明が解決しようとする課題）
上記した従来の電球の製造方法にあっては、発光管ａと
ガス封入管ｂとの連結部をバーナー炎によって加熱溶融
してチップオフを行なっていたので、加熱溶融される範
囲が広範囲となり、発光管ａに広い範囲に亘って変形が
生じ、また、チップオフ後の封止郎ｄもその形状が大き
く、かつ、形状も様々となり、これらが、放電に悪影響
を与えたり、強度を低下させたりしていた．また、発光
管ａ内に充分なガスを封入するため、発光管ａを液体窒
素中に浸漬して冷却する必要があり、そのためバーナー
炎は液体窒素の上方に位置しなければならず、液体窒素
の蒸発流によってバーナー炎が揺らぎ、チップオフのた
めの加熱に悪影響が出るという問題もある．
（Ｅ．課題を解決するための手段）
そこで、上記した課題を解決するために、本発明電球は
、ガスが封入された球体部のガス封入管分離部が球形状
に略沿った形状とされたものであり、また、本発明電球
の製造方法は、球体部と連通され球体部から上方へ延び
たガス封入管内に封１
大ガスを入れた状態で球体部を冷却して上記ガスを球体
部内に所望量収容させた後、球体部とガス封入管との連
結部にレーザー光を照射して該部分を局部的に加熱溶融
し、球体部のガス封入管連結部を密封すると共にガス封
入管を球体部から分離するようにしたものである。As mentioned above, disconnect the gas-filled tube b from the arc tube a,
In addition, in the process of sealing the arc tube a, the so-called tip-off process, the connecting part between the arc tube a and the gas-filled tube b is heated with a burner flame, and when this part is melted, the gas-filled tube b is closed.
This was done by moving it away from arc tube a. (D. Problems to be Solved by the Invention) In the conventional light bulb manufacturing method described above, tip-off is performed by heating and melting the connecting portion between the arc tube a and the gas-filled tube b using a burner flame. Therefore, the range that is heated and melted is wide, and the arc tube a is deformed over a wide range, and the sealing tube d after chip-off is also large and has various shapes. This had a negative effect on the discharge and reduced its intensity. In addition, in order to seal enough gas into the arc tube a, it is necessary to cool the arc tube a by immersing it in liquid nitrogen. Therefore, the burner flame must be located above the liquid nitrogen. There is also the problem that the burner flame fluctuates due to the evaporation flow, which adversely affects heating for tip-off. (E. Means for Solving the Problems) Therefore, in order to solve the above-mentioned problems, in the light bulb of the present invention, the gas-filled tube separation part of the spherical part filled with gas has a shape that substantially follows the spherical shape. In addition, the method for manufacturing the light bulb of the present invention includes: sealing a large amount of gas in a gas-filled tube communicating with the spherical portion and extending upward from the spherical portion; cooling the spherical portion to pour the gas into the spherical body; After the desired amount is contained in the spherical part, the connecting part between the spherical part and the gas-filled tube is irradiated with a laser beam to locally heat and melt the part, sealing the connecting part of the gas-filled tube in the spherical part and filling the gas. The tube is separated from the spherical part.
従って、本発明電球にあっては、球体部の内部の形状が
極端な凹凸の無いものとなり、安定した点灯を得ること
ができ、特に、放電ランプに適用した場合、安定した放
電状態が得られる。そして、本発明電球の製造方法によ
れば、球体部とガス封入管との境界部を局部的に加熱溶
融して該部分を封止すると共に球体部とガス封入管とを
分離することができるので、球体部の内面形状に極端な
凹凸が生じることが無く、また、ガス封入管の球体部か
らの分離を短時間で行なうことができる。Therefore, in the light bulb of the present invention, the inner shape of the spherical part is free from extreme irregularities, and stable lighting can be obtained. In particular, when applied to a discharge lamp, a stable discharge state can be obtained. . According to the method of manufacturing a light bulb of the present invention, the boundary between the spherical part and the gas-filled tube can be locally heated and melted to seal the boundary part and the spherical part and the gas-filled tube can be separated. Therefore, extreme unevenness does not occur on the inner surface of the spherical part, and the gas-filled tube can be separated from the spherical part in a short time.
（Ｆ．実施例）［第１図乃至第５図］
以下に、本発明電球及び電球の製造方法の詳細を図示実
施例に従って説明する。尚、図示実施例は本発明をメタ
ルハライド電球及びメタルハライド電球の製造方法に適
用したものである。(F. Examples) [Figures 1 to 5] Details of the light bulb and the method for manufacturing the light bulb of the present invention will be described below according to the illustrated embodiments. In the illustrated embodiment, the present invention is applied to a metal halide light bulb and a method for manufacturing a metal halide light bulb.
（ａ．メタルハライド電球〉 ［第１図］図中１が車輌
前照灯用メタルハライド電球である。(a. Metal halide light bulb) [Figure 1] Number 1 in the figure is a metal halide light bulb for vehicle headlights.
２は石英ガラスから成るガラス球であり、楕円球状の放
電空間を為す球体部３と該球体部３の長袖方向における
両端から突出した矩形断面のビンチシール部４、４が形
成されている。Reference numeral 2 denotes a glass bulb made of quartz glass, and has a spherical part 3 forming an elliptical discharge space and Vinci seal parts 4, 4 having a rectangular cross section projecting from both ends of the spherical part 3 in the long sleeve direction.
５、５は上記ビンチシール部４、４内に埋設されたモリ
ブデン等から成る金属箔、６、６はタングステンから成
る電極棒であり、これら電極棒６、６の一端は上記金属
箔５、５の一端に連結され、他端は上記球体部３の両端
部に突出している。そして、この球体部３内に突出した
電極棒６、６の他端が放電電極６ａ、６ａとなる。5 and 5 are metal foils made of molybdenum etc. embedded in the vinyl seal parts 4 and 4, 6 and 6 are electrode rods made of tungsten, and one end of these electrode rods 6 and 6 is connected to the metal foils 5 and 5. The other end protrudes from both ends of the spherical part 3. The other ends of the electrode rods 6, 6 protruding into the spherical portion 3 become discharge electrodes 6a, 6a.
７、７はリード線であり、モリブデン等から成り、ビン
チシール部４、４の外端から突出した状態で一部がピン
チシール部４、４に埋着され、かつ、他端が前記金属箔
５、５の他端に接続されている。Lead wires 7 and 7 are made of molybdenum or the like, and a part thereof is embedded in the pinch seal parts 4, 4 while protruding from the outer ends of the pinch seal parts 4, 4, and the other end is connected to the metal foil. 5, connected to the other end of 5.
そして、ガラス球２の球体部３内には水銀と一乃至複数
の金属沃化物粒が封入され、かつ、起動ガスとしてアル
ゴン等の不活性ガスが充填されている。The spherical portion 3 of the glass bulb 2 is filled with mercury and one or more metal iodide grains, and is filled with an inert gas such as argon as a starting gas.
８が封止部であり、球体部３の上部中央に位置し、後述
するガス封入管が連結されていたところで、外側は僅か
に突出し、その内側が浅く小さな凹部となっている。Reference numeral 8 denotes a sealing part, which is located at the center of the upper part of the spherical part 3 and is connected to a gas-filled tube, which will be described later, and has a slightly protruding outer side and a small shallow recess on the inner side.
（ｂ．チップオフ）
（ｂ−１．半完成品）
９はチップオフ前の半完成のメタルハライド電球であり
、球体１ｉ３、ビンチシール部４、４は既に形成され、
金属箔５、５、電極棒６、６及びリード線７、７が組み
込まれている。(b. Chip-off) (b-1. Semi-finished product) 9 is a semi-finished metal halide light bulb before chip-off, and the sphere 1i3 and Vinci seal portions 4, 4 have already been formed,
Metal foils 5, 5, electrode rods 6, 6, and lead wires 7, 7 are incorporated.
１０はガス封入管であり、ガラス球２の材料ガラスと同
じ石英ガラスで形威されており、その下端が球体部３の
上部中央に連結され、その孔１０ａが球体部３内部と連
通されている。Reference numeral 10 denotes a gas-filled tube, which is made of quartz glass, which is the same as the glass material of the glass bulb 2, and whose lower end is connected to the upper center of the spherical part 3, and whose hole 10a is communicated with the inside of the spherical part 3. There is.
（ｂ−２．チップオフ装置）
１１は上記半完成品９のガス封入管１０を球体部３から
切り離すと共に球体部３のガス封入管１０と連通してい
た孔３ａを封止するためのチツプオフ装置である。(b-2. Chip-off device) Reference numeral 11 denotes a tip-off device for separating the gas-filled tube 10 of the semi-finished product 9 from the spherical portion 3 and sealing the hole 3a communicating with the gas-filled tube 10 of the spherical portion 3. It is a device.
１２はガスレーザー、例えば、ＣＯ２（炭酸ガス）レー
ザーである。12 is a gas laser, for example, a CO2 (carbon dioxide gas) laser.
１３はビームスブリッターであり、上記ガスレーザーｌ
２から照射されたレーザー光１４を２つの系統１４ａ，
１４ｂに分割するためのものである。13 is a beam splitter, and the gas laser l
The laser beam 14 irradiated from 2 is transmitted to two systems 14a,
This is for dividing into 14b.
１５ａ、１５ｂは互いに水平方向に間隔を置いて略対向
するように配置された集光レンズである。Reference numerals 15a and 15b are condenser lenses arranged so as to be substantially opposed to each other with an interval in the horizontal direction.
そして、ビームスブリッタ−１３により２系統に分割さ
れたレーザー光の一方１４ａは全反射ミラー１６ａによ
り反射されて集光レンズ１５ａに入射され、２つの集光
レンズ１５ａと１５ｂとの間の略中間に位置した点１７
ａに集光される。また、他方のレーザー光１４ｂは全反
射ミラー１６ｂ，１６ｂにより順次反射されて集光レン
ズ１５ｂに入射され、これも２つの集光レンズ１５ａと
１５ｂとの間の略中間に位置した点１７ｂに集光される
。そして、上記集光点１７ａと１７ｂとは一致すること
なく、僅かにずれて位置している。One of the laser beams 14a split into two systems by the beam splitter 13 is reflected by the total reflection mirror 16a and enters the condensing lens 15a, and is approximately halfway between the two condensing lenses 15a and 15b. Positioned point 17
The light is focused on a. The other laser beam 14b is sequentially reflected by the total reflection mirrors 16b and 16b and enters the condenser lens 15b, and is also condensed at a point 17b located approximately in the middle between the two condenser lenses 15a and 15b. be illuminated. The light condensing points 17a and 17b do not coincide with each other, but are slightly shifted from each other.
ｌ８は上記集光点１７ａ，１７ｂの直ぐ下に位置した冷
却浴槽であり、液体窒素１９がオーバーフローされるよ
うに供給されている．
２０は冷却浴槽１８の上側に位置し、上下方向に移動自
在とされた支持具であり、上記半完成品９のピンチシー
ル部４、４とガス封入管１０を各別に保持するようにな
っている。Reference numeral 18 denotes a cooling bath located immediately below the light condensing points 17a and 17b, into which liquid nitrogen 19 is supplied so as to overflow. Reference numeral 20 denotes a support that is located above the cooling bath 18 and is movable in the vertical direction, and is adapted to hold the pinch seal portions 4, 4 of the semi-finished product 9 and the gas filling tube 10 separately. There is.
（ｂ−３，チツブオフ工程）
しかして、所定量の金属沃化物粒及び水銀を球体部３内
に入れられた半完成品９を上記支持具２０に支持し、か
つ、ガス封入管１０が図示しない不活性ガス供給源と接
続される。(b-3, Chip-off step) The semi-finished product 9 containing a predetermined amount of metal iodide grains and mercury in the spherical part 3 is supported on the support 20, and the gas-filled tube 10 is shown in the figure. Not connected to an inert gas supply.
それから、支持具２０が下降し、球体部３が冷却浴槽１
８の液体窒素１９内に浸漬されると共に球体部３とガス
封入管１０との連結部２１が略上記集光点１７ａ，１７
ｂに位置される．そして、球体部３が液体窒素１９中に
所定時間、例えば、６０秒間、浸漬されて充分に冷却さ
れ、所定量の不活性ガスが球体部３内に入ったところで
、上記レーザー光１４ａ、１４ｂが球体部３とガス封入
管１０との連結部２１に照射され、第５図（Ａ）から（
Ｄ）へ示す過程を経てガス封入管ｌＯが球体部３から分
離され、かつ、球体部３の孔３ａが閉塞されて封止部８
となる．（Ｇ．発明の効果）
以上に記載したところから明らかなとおり、本発明電球
は、ガスが封入された球体部のガス封入管分離部が球形
状に略沿った形状とされたことを特徴とし、また、本発
明電球の製造方法は、球体部と連通され球体部から上方
へ延びたガス封入管内に封入ガスを入れた状態で球体部
を冷却して上記ガスを球体部内に所望量収容させた後、
球体部とガス封入管との連結部にレーザー光を照射して
該部分を局部的に加熱溶融し、球体部のガス封入管連結
部を密封すると共にガス封入管を球体部から分離するこ
とを特徴とする。Then, the support 20 is lowered, and the spherical part 3 is attached to the cooling bath 1.
8, and the connecting portion 21 between the spherical portion 3 and the gas-filled tube 10 is approximately at the above-mentioned light converging points 17a, 17.
It is located at b. Then, when the spherical part 3 is sufficiently cooled by being immersed in the liquid nitrogen 19 for a predetermined time, for example, 60 seconds, and a predetermined amount of inert gas has entered the spherical part 3, the laser beams 14a and 14b are emitted. The connection part 21 between the spherical part 3 and the gas-filled tube 10 is irradiated, and from FIG.
Through the process shown in D), the gas-filled tube lO is separated from the spherical part 3, and the hole 3a of the spherical part 3 is closed to form the sealing part 8.
becomes. (G. Effects of the Invention) As is clear from the above description, the light bulb of the present invention is characterized in that the gas-filled tube separation part of the spherical part filled with gas has a shape that roughly follows the spherical shape. Further, the method for manufacturing the light bulb of the present invention includes filling a gas-filled tube communicating with the spherical portion and extending upward from the spherical portion, and cooling the spherical portion to accommodate a desired amount of the gas within the spherical portion. After
A laser beam is irradiated onto the connecting part between the spherical part and the gas-filled tube to locally heat and melt the part, thereby sealing the connecting part of the gas-filled tube in the spherical part and separating the gas-filled tube from the spherical part. Features.
従って、本発明電球にあっては、球体部の内部の形状が
極端な凹凸の無いものとなり、安定した点灯を得ること
ができ、特に、放電ランプに適用した場合、安定した放
電状態が得られる。そして、本発明電球の製造方法によ
れば、球体部とガス封入管との境界部を局部的に加熱溶
融して該部分を封止すると共に球体部とガス封入管とを
分離することができるので、球体部の内面形状に極端な
凹凸が生じることが無く、また、ガス封入管の球体部か
らの分離を短時間で行なうことができる。Therefore, in the light bulb of the present invention, the inner shape of the spherical part is free from extreme irregularities, and stable lighting can be obtained. In particular, when applied to a discharge lamp, a stable discharge state can be obtained. . According to the method of manufacturing a light bulb of the present invention, the boundary between the spherical part and the gas-filled tube can be locally heated and melted to seal the boundary part and the spherical part and the gas-filled tube can be separated. Therefore, extreme unevenness does not occur on the inner surface of the spherical part, and the gas-filled tube can be separated from the spherical part in a short time.
尚、上記実施例で示した具体的な構造や方法は、本発明
の実施に当っての具体化のＧ孟んの一イ列であって、こ
れらによって本発明の技術的範囲力く限定的に解釈され
るものではない．The specific structures and methods shown in the above embodiments are one example of embodiments of the present invention, and these do not limit the technical scope of the present invention. It is not intended to be interpreted as such.
第１図及び第２図は本発明電球の実施の一例を示すもの
で、第１図は斜視図、第２図は第１図の１１ − １１
線に沿う断面図、第３図乃至第５図番よ本発明電球の製
造方法の一例を示すもので、第３図Ｃま概略正面図、第
４図はチツブオフが為されるときの概略正面図、第５図
は（Ａ）から（Ｄ）へチツブオフ工程の進行を順を追っ
て示す要部の概略拡大断面図、第６図は従来の電球の一
例を示す斜視図である。
８・・・ガス封入管分離部、
１０・・・ガス封入管、
１４ａ，１４ｂ・−−レーザー光、
２１・・・ガス封入管連結郎
出
同
願
人
株式会社小糸製作所
株式会社田中製作所
符号の説明
１・・・電球、 ３・・・球体部、
断面図（π一ｎ線）
第２図
４コ
要部の概略拡大断面図
第５図（，４）
要部の概略拡大断面図
第５図（Ｂ）
要部の概略拡大断面図
要部の概略拡大断面図
第５図
（Ｄ）Fig. 1 and Fig. 2 show an example of the implementation of the light bulb of the present invention, Fig. 1 is a perspective view, and Fig. 2 is a perspective view of Fig. 1.
3 to 5 show an example of the manufacturing method of the light bulb of the present invention, and FIG. 3C is a schematic front view, and FIG. 4 is a schematic front view when chip-off is performed. Figures 5 and 5 are schematic enlarged cross-sectional views of main parts showing the progress of the chip-off process from (A) to (D) in order, and Figure 6 is a perspective view showing an example of a conventional light bulb. 8...Gas-filled tube separation part, 10...Gas-filled tube, 14a, 14b--laser light, 21...Gas-filled tube connection applicant Koito Manufacturing Co., Ltd. Tanaka Manufacturing Co., Ltd. Code: Explanation 1...Light bulb, 3...Spherical part, Cross-sectional view (π-1n line) Fig. 2. Schematic enlarged sectional view of the main parts of 4. Fig. 5 (, 4) Schematic enlarged sectional view of the main parts. Figure (B) Schematic enlarged sectional view of the main part Figure 5 (D) Schematic enlarged sectional view of the main part
Claims (2)
形状に略沿った形状とされた ことを特徴とする電球(1) A light bulb characterized in that the gas-filled tube separation part of the spherical part filled with gas has a shape that roughly follows the spherical shape.
入管内に封入ガスを入れた状態で球体部を冷却して上記
ガスを球体部内に所望量収容させた後、球体部とガス封
入管との連結部にレーザー光を照射して該部分を局部的
に加熱溶融し、球体部のガス封入管連結部を密封すると
共にガス封入管を球体部から分離する ことを特徴とする電球の製造方法(2) Filled gas is placed in a gas-filled tube that communicates with the spherical part and extends upward from the spherical part, cools the spherical part to accommodate a desired amount of the gas in the spherical part, and then seals the gas with the spherical part. A light bulb characterized in that the connection part with the tube is irradiated with a laser beam to locally heat and melt the part, thereby sealing the connection part of the gas-filled tube of the spherical part and separating the gas-filled tube from the spherical part. Production method
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1239633A JP2649974B2 (en) | 1989-09-14 | 1989-09-14 | How to make a light bulb |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1239633A JP2649974B2 (en) | 1989-09-14 | 1989-09-14 | How to make a light bulb |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH03102758A true JPH03102758A (en) | 1991-04-30 |
| JP2649974B2 JP2649974B2 (en) | 1997-09-03 |
Family
ID=17047617
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1239633A Expired - Lifetime JP2649974B2 (en) | 1989-09-14 | 1989-09-14 | How to make a light bulb |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2649974B2 (en) |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5918121A (en) * | 1982-07-21 | 1984-01-30 | Toshiba Corp | Apparatus for welding glass parts |
| JPS6068531A (en) * | 1983-09-21 | 1985-04-19 | Toshiba Corp | Method of cutting exhaust tube of tubular bulb by fusion and its device |
-
1989
- 1989-09-14 JP JP1239633A patent/JP2649974B2/en not_active Expired - Lifetime
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5918121A (en) * | 1982-07-21 | 1984-01-30 | Toshiba Corp | Apparatus for welding glass parts |
| JPS6068531A (en) * | 1983-09-21 | 1985-04-19 | Toshiba Corp | Method of cutting exhaust tube of tubular bulb by fusion and its device |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2649974B2 (en) | 1997-09-03 |
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