JPH03210731A - Manufacture of circular fluorescent lamp - Google Patents
Manufacture of circular fluorescent lampInfo
- Publication number
- JPH03210731A JPH03210731A JP504990A JP504990A JPH03210731A JP H03210731 A JPH03210731 A JP H03210731A JP 504990 A JP504990 A JP 504990A JP 504990 A JP504990 A JP 504990A JP H03210731 A JPH03210731 A JP H03210731A
- Authority
- JP
- Japan
- Prior art keywords
- white powder
- bulb
- glass bulb
- fluorescent lamp
- conductive stripes
- 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.)
- Pending
Links
- 238000004519 manufacturing process Methods 0.000 title claims description 13
- 239000000843 powder Substances 0.000 claims abstract description 39
- 239000011521 glass Substances 0.000 claims abstract description 35
- QVQLCTNNEUAWMS-UHFFFAOYSA-N barium oxide Chemical compound [Ba]=O QVQLCTNNEUAWMS-UHFFFAOYSA-N 0.000 claims abstract description 13
- ODINCKMPIJJUCX-UHFFFAOYSA-N calcium oxide Inorganic materials [Ca]=O ODINCKMPIJJUCX-UHFFFAOYSA-N 0.000 claims abstract description 9
- 238000010438 heat treatment Methods 0.000 claims abstract description 8
- 238000000034 method Methods 0.000 claims description 12
- 239000004327 boric acid Substances 0.000 claims description 11
- KGBXLFKZBHKPEV-UHFFFAOYSA-N boric acid Chemical compound OB(O)O KGBXLFKZBHKPEV-UHFFFAOYSA-N 0.000 claims description 5
- XPPKVPWEQAFLFU-UHFFFAOYSA-N diphosphoric acid Chemical compound OP(O)(=O)OP(O)(O)=O XPPKVPWEQAFLFU-UHFFFAOYSA-N 0.000 claims description 5
- 229940005657 pyrophosphoric acid Drugs 0.000 claims description 5
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 abstract description 7
- 239000002253 acid Substances 0.000 abstract description 2
- QSHDDOUJBYECFT-UHFFFAOYSA-N mercury Chemical compound [Hg] QSHDDOUJBYECFT-UHFFFAOYSA-N 0.000 abstract description 2
- 229910052753 mercury Inorganic materials 0.000 abstract description 2
- 239000000292 calcium oxide Substances 0.000 abstract 3
- JKWMSGQKBLHBQQ-UHFFFAOYSA-N diboron trioxide Chemical compound O=BOB=O JKWMSGQKBLHBQQ-UHFFFAOYSA-N 0.000 abstract 3
- 229910052810 boron oxide Inorganic materials 0.000 abstract 2
- BRPQOXSCLDDYGP-UHFFFAOYSA-N calcium oxide Chemical compound [O-2].[Ca+2] BRPQOXSCLDDYGP-UHFFFAOYSA-N 0.000 abstract 2
- 239000007789 gas Substances 0.000 abstract 1
- PQMFVUNERGGBPG-UHFFFAOYSA-N (6-bromopyridin-2-yl)hydrazine Chemical compound NNC1=CC=CC(Br)=N1 PQMFVUNERGGBPG-UHFFFAOYSA-N 0.000 description 6
- 239000000463 material Substances 0.000 description 5
- 238000000465 moulding Methods 0.000 description 4
- 238000004804 winding Methods 0.000 description 3
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 2
- IVHVNMLJNASKHW-UHFFFAOYSA-M Chlorphonium chloride Chemical compound [Cl-].CCCC[P+](CCCC)(CCCC)CC1=CC=C(Cl)C=C1Cl IVHVNMLJNASKHW-UHFFFAOYSA-M 0.000 description 2
- 229910052799 carbon Inorganic materials 0.000 description 2
- 239000011248 coating agent Substances 0.000 description 2
- 238000000576 coating method Methods 0.000 description 2
- 238000007796 conventional method Methods 0.000 description 2
- 238000002474 experimental method Methods 0.000 description 2
- 239000002245 particle Substances 0.000 description 2
- 238000007789 sealing Methods 0.000 description 2
- OYPRJOBELJOOCE-UHFFFAOYSA-N Calcium Chemical compound [Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 1
- 229910052791 calcium Inorganic materials 0.000 description 1
- 239000011575 calcium Substances 0.000 description 1
- 238000005336 cracking Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 239000000945 filler Substances 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 230000000717 retained effect Effects 0.000 description 1
- 239000000725 suspension Substances 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】
産業上の利用分野
本発明はガラスバルブの内面に導電性ストライプを形成
した環形蛍光ランプの製造方法に関するものである。DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to a method for manufacturing an annular fluorescent lamp in which conductive stripes are formed on the inner surface of a glass bulb.
従来の技術
従来、このような環形蛍光ランプの製造は、次のような
方法で行われてきた。Prior Art Conventionally, such annular fluorescent lamps have been manufactured by the following method.
まず、直管状ガラスバルブを洗浄・乾燥し、導電性スト
ライプをそのバルブ内面に形成して、付着・乾燥させる
。次いで、そのバルブ内面に蛍光体を塗布し乾燥させ、
蛍光体の焼付は処理をし、ガラスバルブ、蛍光体および
導電性ストライプ内の不純物などを除去する。このガラ
スバルブ内面の導電性ストライプ上の蛍光体の一部（ラ
ンプ完成時の電極近傍）を数−剥ぎ取る。この後、ガラ
スバルブの両端部に熱電子放射性物質を塗布した電極を
封止する。この時、導電性ストライプの位置はランプ完
成後に口金ビン方向（点灯時はランプを水平点灯した場
合、４５°上方内面側向き）円周上内面に位置するよう
に設定してなる。次いで、封止済ガラスバルブの導電性
ストライプを覆い隠すようにその外面に白色粉体を塗布
する（以下、外面コートという）。次に、この処理済ガ
ラスバルブをロータリ式自動成形・排気機に装着し、ま
ず成形準備のため、同機上内でガラスバルブ全体を予熱
・加熱炉を連続的に通し軟化させ、開戸の最終ポジショ
ンを通過直後に巻上げローラにより環形に成形する。こ
の後、ガラスバルブ上端封止部に連なる排気細管を通し
て、ガラスバルブ内部が排気される。この時並行して、
電極に通電し電極フィラメントの熱電子放射物質の活性
化を行い、ガラスバルブ内に適量の封入物を封入後、排
気管をチップオフして、排気工程を完了する。First, a straight glass bulb is cleaned and dried, and a conductive stripe is formed on the inner surface of the bulb, which is then attached and dried. Next, phosphor is applied to the inner surface of the bulb and dried.
The phosphor is processed to remove impurities in the glass bulb, phosphor and conductive stripes. A portion of the phosphor on the conductive stripe on the inner surface of the glass bulb (near the electrode when the lamp is completed) is peeled off. After this, the electrodes coated with thermionic emissive material are sealed at both ends of the glass bulb. At this time, the position of the conductive stripe is set so that it is located on the inner surface of the circumference in the direction of the base bottle (when the lamp is lit horizontally, 45° upward and inner side) after the lamp is completed. Next, white powder is applied to the outer surface of the sealed glass bulb so as to cover the conductive stripes (hereinafter referred to as outer surface coating). Next, this treated glass bulb is installed in a rotary automatic molding/exhaust machine, and first, in preparation for molding, the entire glass bulb is preheated and softened by being continuously passed through a heating furnace on the same machine, and the final stage for opening the door. Immediately after passing through the position, it is formed into a ring shape by a winding roller. Thereafter, the inside of the glass bulb is evacuated through the exhaust thin tube connected to the upper end sealing portion of the glass bulb. At this time, in parallel
Electricity is applied to the electrode to activate the thermionic emissive material in the electrode filament, and after filling an appropriate amount of material in the glass bulb, the exhaust pipe is tipped off to complete the exhaust process.
この後、白色粉体を除去し、同バルブに口金を組み立て
てランプを完成する。After this, the white powder is removed and the base is assembled to the bulb to complete the lamp.
かかる工程の中で、特に封止工程における外面コートは
重要なポイントとなる。すなわち、導電性ストライプ用
の材料は、カーボン、アルミナ。Among these steps, the outer surface coating is particularly important in the sealing step. That is, the materials for the conductive stripes are carbon and alumina.
ガラス粉などからなり、黒色を呈するため、成形工程に
おけるガラスバルブの加熱軟化時には、このままでは加
熱炉内での熱吸収が強（、その結果、その部分のガラス
が極端に膨張し、導電性ストライプもまた同様の影響を
受けて膨張し亀裂を生じ導通が失なわれる。このため前
述のように、バルブの外面に導電性ストライプを覆い隠
すように白色粉体を形成することにより、加熱炉内での
熱吸収を抑制して、導電性ストライプに亀裂が発生する
のを防いでいる。この白色粉体は、例えば、安価なハロ
リン酸カルシウム系蛍光体をサスペンション状にして使
用している。It is made of glass powder and has a black color, so when the glass bulb is heated and softened in the molding process, it absorbs a lot of heat in the heating furnace (as a result, the glass in that area expands extremely, and the conductive stripes form). is also affected by the same effect, expanding and cracking, causing a loss of continuity.For this reason, as described above, by forming a white powder on the outside of the bulb to cover the conductive stripe, it is possible to This suppresses heat absorption in the conductive stripes and prevents cracks from forming in the conductive stripes.This white powder is made of, for example, an inexpensive calcium halophosphate phosphor in the form of a suspension.
発明が解決しようとする課題
前記白色粉体の材料には、前述のごと（白色粉体を使用
されてきたが、炉内でのバルブ軟化膨張、伸長作用およ
び機械振動などで白色粉体が剥離され、同剥離部分下の
導電性ストライプが吸熱作用を起こし、それ自体膨張し
亀裂を発生し、導通を失なわせていた。Problems to be Solved by the Invention As mentioned above, white powder has been used as the material for the white powder, but the white powder peels off due to bulb softening expansion, elongation, mechanical vibration, etc. As a result, the conductive strip under the peeled part absorbed heat, expanded, and cracked, causing a loss of continuity.
本発明は製造時、導電性ストライプの亀裂の発生を防止
し、歩留りの向上を図り、安定した品質を有する環形蛍
光ランプの製造方法を提供するものである。The present invention provides a method for manufacturing annular fluorescent lamps that prevents cracks in conductive stripes during manufacturing, improves yield, and has stable quality.
課題を解決するための手段
本発明の環形蛍光ランプの製造方法は、内面に導電性ス
トライプを形成した封止済み直管状ガラスバルブの外面
に、酸化カルシウム（ＣａＯ）、酸化バリウム（ＢａＯ
）およびホウ酸（Ｂ２Ｏ３）を０．５〜２．５重量％混
入した白色粉体を形成してこの白色粉体で前記導電性ス
トライプを覆った後、前記直管状ガラスバルブを加熱軟
化して環形に成形し、しかる後前記白色粉体を除去する
構成を有している。Means for Solving the Problems The method of manufacturing an annular fluorescent lamp of the present invention is to apply calcium oxide (CaO), barium oxide (BaO
) and boric acid (B2O3) in an amount of 0.5 to 2.5% by weight to form a white powder and cover the conductive stripes with this white powder, and then heat and soften the straight glass bulb. It has a structure in which the white powder is formed into a ring shape and then the white powder is removed.
又、本発明の環形蛍光ランプの製造方法は、内面に導電
性ストライプを形成した封止済み直管状ガラスバルブの
外面に、酸化カルシウム（ＣａＯ）。Further, in the method for manufacturing an annular fluorescent lamp of the present invention, calcium oxide (CaO) is coated on the outer surface of a sealed straight tubular glass bulb with conductive stripes formed on the inner surface.
酸化バリウム（ＢａＯ）、ホウ酸（Ｂ２Ｏ３）およびピ
ロリン酸（Ｐ ２Ｏ ｓ ）を０．５〜５．０重量％混
入した白色粉体を成形してこの白色粉体で前記導電性ス
トライプを覆った後、前記直管状ガラスバルブを加熱軟
化して環形に成形し、しがる後前記白色粉体を除去する
構成を有している。A white powder containing 0.5 to 5.0% by weight of barium oxide (BaO), boric acid (B2O3), and pyrophosphoric acid (P2Os) was molded and the conductive stripes were covered with this white powder. After that, the straight tubular glass bulb is heated and softened to form it into an annular shape, and after being tied, the white powder is removed.
作用
一般に、環形蛍光ランプの製造方法においては、直管形
ガラスバルブを環形に成形するために、ガラスバルブは
約８００〜９００℃に加熱される。したがって、かかる
加熱によって、ガラスバルブの外面に成形された白色粉
体中のＣａｂ。Function: Generally, in the method of manufacturing an annular fluorescent lamp, a straight glass bulb is heated to about 800 to 900° C. in order to form it into an annular shape. Therefore, by such heating, the Cab in the white powder is formed on the outer surface of the glass bulb.
ＢａＯおよびＢ ２Ｏ３ ＊またはＣａｂ、Ｂａｄ。BaO and B2O3 * or Cab, Bad.
Ｂ２Ｏ３およびＰ ２Ｏ ｓは溶けて、ガラスバルブの
ガラスと溶は合う。その結果、白色粉体はガラスバルブ
によく保持されて、製造時ガラスバルブがら剥離するの
が防止される。The B2O3 and P2Os melt and match the glass of the glass bulb. As a result, the white powder is well retained in the glass bulb and is prevented from peeling off from the glass bulb during manufacturing.
実施例
まず、第１図に示すように、通常の方法で内面にカーボ
ン、アルミニウム粉等からなる幅約２〜３ｍの導電性ス
トライプ（図示せず）を形成した直管状ガラスバルブｌ
を封止して作り、その外面に、ハロリン酸系蛍光体から
なる白色粉体２を形成して、前記導電性ストライプを覆
い、これを自動成形・排気機に装着し、加熱炉（図示せ
ず）で全体を加熱軟化させ、この加熱炉を出た後、第２
図に示すように、巻上げローラ３により軟化したガラス
バルブ１を環形に成形する。その後、排気細管４により
ガラスバルブ１内を排気し、水銀および希ガスからなる
封入物を封入して、排気細管４をチップオフした後、白
色粉体２を拭き取る（第３図）。そして、第４図に拡大
して示すように、ガラスバルブｌに口金５を取り付ける
。Example First, as shown in Fig. 1, a straight glass bulb l was prepared with a conductive stripe (not shown) about 2 to 3 m wide made of carbon, aluminum powder, etc. formed on its inner surface by a conventional method.
A white powder 2 made of a halophosphoric acid-based phosphor is formed on the outer surface of the powder to cover the conductive stripes, and this is installed in an automatic molding/exhaust machine and heated in a heating furnace (not shown). After leaving this heating furnace, the second
As shown in the figure, the softened glass bulb 1 is formed into a ring shape by a winding roller 3. Thereafter, the inside of the glass bulb 1 is evacuated through the exhaust capillary tube 4, a filler consisting of mercury and a rare gas is filled in, the exhaust capillary tube 4 is tipped off, and the white powder 2 is wiped off (FIG. 3). Then, as shown in an enlarged view in FIG. 4, a cap 5 is attached to the glass bulb l.
なお、第３図および第４図中、６は導電性ストライプを
示す。In addition, in FIGS. 3 and 4, 6 indicates a conductive stripe.
発明者は上記構成において、白色粉体中に酸化カルシウ
ム（ＣａＯ）、酸化バリウム（ＢａＯ）およびホウ酸（
Ｂ２Ｏ３）（以下、ＣＢＢという） （中心粒径０．８
±０．３μ）を０．５〜２．５重量％混入、ならびに、
酸化カルシウム（ＣａＯ）、酸化バリウム（Ｂ ａ Ｏ
）、ホウｉ！！（Ｂ２Ｏ３）およびピロリン酸（Ｐ２Ｏ
３）（以下、ＣＢＢＰという）（中心粒径０．８±０．
３μ）を０．５〜５．０重量％混入した環形ガラスバル
ブを多数作り、これらについて実験したところ、白色粉
体の剥離率、および完成ランプ表面外観（白色粉体拭き
取り跡の外観）は下表に示すとおりの結果となった。In the above structure, the inventors added calcium oxide (CaO), barium oxide (BaO), and boric acid (
B2O3) (hereinafter referred to as CBB) (center particle size 0.8
±0.3μ) mixed in 0.5 to 2.5% by weight, and
Calcium oxide (CaO), barium oxide (BaO
), Hoi! ! (B2O3) and pyrophosphoric acid (P2O
3) (hereinafter referred to as CBBP) (center particle size 0.8±0.
When we made a large number of annular glass bulbs containing 0.5 to 5.0% by weight of 3μ) and conducted experiments on these, we found that the peeling rate of the white powder and the appearance of the finished lamp surface (the appearance of the white powder wiping marks) were as follows. The results are as shown in the table.
（以 下 余 白）
ただし、上表中、○は良好、△やや劣る、×は不良をそ
れぞれ示す。※は従来例
上表から明らかなように、白色粉体中にＣＢＢを０．５
〜２．５重量％混入したとき、またはＣＢＢＰを０．５
〜５．０重量％混入したときにガラスバルブ外面に対す
る白色粉体の剥離率が激減し、かつ完成ランプ表面の外
観も良好となることがわかる。(Margin below) However, in the above table, ○ indicates good, △ is slightly poor, and × indicates poor. * indicates a conventional example.As is clear from the table above, 0.5 CBB is added to the white powder.
When mixed with ~2.5% by weight or 0.5% of CBBP
It can be seen that when ~5.0% by weight is mixed, the peeling rate of the white powder from the outer surface of the glass bulb is drastically reduced, and the appearance of the finished lamp surface is also improved.
なお、実験によれば、白色粉体の幅は、導電性ストライ
プを十分に被い隠すために、導電性ストライプの幅の１
．２〜２．０倍とすることが望ましい。According to experiments, the width of the white powder is 1 of the width of the conductive stripes in order to sufficiently cover the conductive stripes.
．． It is desirable to set it as 2 to 2.0 times.
発明の詳細
な説明したように、本発明の方法によれば、製造時、環
形蛍光ランプのガラスバルブの内面に成形された導電性
ストライプの亀裂の発生を従来に比し著しく減少するこ
とができ、またその外観も良好となる等歩留まりが向上
し、品質のすぐれた環形蛍光ランプを得ることができる
。As described in detail, according to the method of the present invention, the occurrence of cracks in the conductive stripes formed on the inner surface of the glass bulb of an annular fluorescent lamp during manufacturing can be significantly reduced compared to the conventional method. Moreover, the yield is improved, such as the appearance is improved, and an annular fluorescent lamp of excellent quality can be obtained.
を
第１図ないし第そ図は本発明の環形蛍光ランプの製造方
法の工程図である。
１・・・・・・ガラスバルブ、２・・・・・・白色粉体
、３・・・・・・巻上げローラ、６・・・・・・導電性
ストライプ。1 to 3 are process diagrams of a method for manufacturing an annular fluorescent lamp according to the present invention. 1... Glass bulb, 2... White powder, 3... Winding roller, 6... Conductive stripe.
Claims (3)
状ガラスバルブの外面に、酸化カルシウム（ＣａＯ）、
酸化バリウム（ＢａＯ）およびホウ酸（Ｂ＿２Ｏ＿３）
を０．５〜２．５重量％混入した白色粉体を形成してこ
の白色粉体で前記導電性ストライプを覆った後、前記直
管状ガラスバルブを加熱軟化して環形に成形し、しかる
後前記白色粉体を除去することを特徴とする環形蛍光ラ
ンプの製造方法。(1) Calcium oxide (CaO),
Barium oxide (BaO) and boric acid (B_2O_3)
After forming a white powder mixed with 0.5 to 2.5% by weight and covering the conductive stripes with this white powder, the straight tubular glass bulb is heated and softened to form it into an annular shape, and then A method for manufacturing an annular fluorescent lamp, characterized in that the white powder is removed.
状ガラスバルブの外面に、酸化カルシウム（ＣａＯ）、
酸化バリウム（ＢａＯ）、ホウ酸（Ｂ＿２Ｏ＿３）、お
よびピロリン酸（Ｐ＿２Ｏ＿５）を０．５〜５．０重量
％混入した白色粉体を形成してこの白色粉体で前記導電
性ストライプを覆った後、前記直管状ガラスバルブを加
熱軟化して環形に成形し、しかる後前記白色粉体を除去
することを特徴とする環形蛍光ランプの製造方法。(2) Calcium oxide (CaO),
After forming a white powder containing 0.5 to 5.0% by weight of barium oxide (BaO), boric acid (B_2O_3), and pyrophosphoric acid (P_2O_5) and covering the conductive stripes with this white powder. . A method for manufacturing an annular fluorescent lamp, which comprises heating and softening the straight glass bulb to form it into an annular shape, and then removing the white powder.
２．０倍の範囲としたことを特徴とする請求項１または
請求項２記載の環形蛍光ランプの製造方法。(3) The width of the white powder is 1.2 to the width of the conductive stripe.
3. The method for manufacturing an annular fluorescent lamp according to claim 1, wherein the range is 2.0 times.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP504990A JPH03210731A (en) | 1990-01-12 | 1990-01-12 | Manufacture of circular fluorescent lamp |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP504990A JPH03210731A (en) | 1990-01-12 | 1990-01-12 | Manufacture of circular fluorescent lamp |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH03210731A true JPH03210731A (en) | 1991-09-13 |
Family
ID=11600553
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP504990A Pending JPH03210731A (en) | 1990-01-12 | 1990-01-12 | Manufacture of circular fluorescent lamp |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH03210731A (en) |
-
1990
- 1990-01-12 JP JP504990A patent/JPH03210731A/en active Pending
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US4545774A (en) | Method of manufacturing a low-pressure mercury vapor discharge lamp and low-pressure mercury vapor discharge lamp manufactured by this method | |
| US4324447A (en) | Method of producing a low-pressure mercury vapor discharge lamp | |
| US3194625A (en) | Electric lamp with unitary inner envelope and stem assembly and manufacture thereof | |
| US5227693A (en) | Fluorescent lamp with uv suppressing film and its manufacturing method | |
| US4441050A (en) | Single-ended low pressure discharge lamp and method of manufacture | |
| US4088802A (en) | Process for coating envelope for reflector-type fluorescent lamp and the lamp resulting therefrom | |
| US2006568A (en) | Method of sealing metal wires to glass | |
| CA1088619A (en) | Manufacture of electric light sources | |
| US2449637A (en) | Method and apparatus for manufacturing fluorescent lamps | |
| JPH03210731A (en) | Manufacture of circular fluorescent lamp | |
| US2945327A (en) | Method of manufacturing electric lamps or similar devices | |
| US2733166A (en) | Method of internally coating lamp | |
| EP0662704A1 (en) | Lamp and lighting apparatus utilizing same | |
| US4599536A (en) | Single-ended low-pressure discharge lamp, such as fluorescent lamp, and method of its manufacture | |
| US4423350A (en) | Fluorescent lamp and process for fabricating the same | |
| JPS5951105B2 (en) | Surface treatment method for fluorescent light tubes and other glass tubes | |
| JPS6255257B2 (en) | ||
| US4103201A (en) | Cementless base incandescent lamp | |
| JPS59151730A (en) | How to make a lamp | |
| CN1127747C (en) | Bulb manufacturing method | |
| JP2008159398A (en) | Stem for fluorescent lamp, fluorescent lamp and lighting device | |
| US4689031A (en) | Method for sealing arc discharge lamps | |
| JPS6258539A (en) | Manufacture of rapid-start fluorescent lamp | |
| JPH0479093B2 (en) | ||
| JPH06223715A (en) | Fluorescent lamp sealing method |