JPH0216545B2 - - Google Patents
Info
- Publication number
- JPH0216545B2 JPH0216545B2 JP7069281A JP7069281A JPH0216545B2 JP H0216545 B2 JPH0216545 B2 JP H0216545B2 JP 7069281 A JP7069281 A JP 7069281A JP 7069281 A JP7069281 A JP 7069281A JP H0216545 B2 JPH0216545 B2 JP H0216545B2
- Authority
- JP
- Japan
- Prior art keywords
- phosphor
- bulb
- phosphor layer
- fluorescent lamp
- average particle
- 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.)
- Expired
Links
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 claims description 57
- 239000002245 particle Substances 0.000 claims description 18
- 239000000203 mixture Substances 0.000 claims description 2
- 239000011521 glass Substances 0.000 claims 2
- 238000000034 method Methods 0.000 description 7
- 230000004907 flux Effects 0.000 description 5
- 230000007423 decrease Effects 0.000 description 3
- 239000011572 manganese Substances 0.000 description 3
- 229910052693 Europium Inorganic materials 0.000 description 2
- BPQQTUXANYXVAA-UHFFFAOYSA-N Orthosilicate Chemical compound [O-][Si]([O-])([O-])[O-] BPQQTUXANYXVAA-UHFFFAOYSA-N 0.000 description 2
- -1 antimony-manganese activated calcium Chemical class 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- OGPBJKLSAFTDLK-UHFFFAOYSA-N europium atom Chemical compound [Eu] OGPBJKLSAFTDLK-UHFFFAOYSA-N 0.000 description 2
- WFKWXMTUELFFGS-UHFFFAOYSA-N tungsten Chemical compound [W] WFKWXMTUELFFGS-UHFFFAOYSA-N 0.000 description 2
- 229910052721 tungsten Inorganic materials 0.000 description 2
- 239000010937 tungsten Substances 0.000 description 2
- 150000003746 yttrium Chemical class 0.000 description 2
- 229910052684 Cerium Inorganic materials 0.000 description 1
- 229910052771 Terbium Inorganic materials 0.000 description 1
- GCAAQROFKRZNKT-UHFFFAOYSA-N [Tb].[Ce] Chemical compound [Tb].[Ce] GCAAQROFKRZNKT-UHFFFAOYSA-N 0.000 description 1
- 229910052787 antimony Inorganic materials 0.000 description 1
- WATWJIUSRGPENY-UHFFFAOYSA-N antimony atom Chemical compound [Sb] WATWJIUSRGPENY-UHFFFAOYSA-N 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 229910000389 calcium phosphate Inorganic materials 0.000 description 1
- 239000001506 calcium phosphate Substances 0.000 description 1
- 235000011010 calcium phosphates Nutrition 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 229910052748 manganese Inorganic materials 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- QORWJWZARLRLPR-UHFFFAOYSA-H tricalcium bis(phosphate) Chemical compound [Ca+2].[Ca+2].[Ca+2].[O-]P([O-])([O-])=O.[O-]P([O-])([O-])=O QORWJWZARLRLPR-UHFFFAOYSA-H 0.000 description 1
- 238000005303 weighing Methods 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- H01J61/00—Gas-discharge or vapour-discharge lamps
- H01J61/02—Details
- H01J61/38—Devices for influencing the colour or wavelength of the light
- H01J61/42—Devices for influencing the colour or wavelength of the light by transforming the wavelength of the light by luminescence
- H01J61/48—Separate coatings of different luminous materials
Landscapes
- Vessels And Coating Films For Discharge Lamps (AREA)
Description
【発明の詳細な説明】 本発明は曲管形けい光ランプに関する。[Detailed description of the invention] The present invention relates to a curved tube fluorescent lamp.
従来、けい光ランプの効率（lm／Ｗ）向上の
方法として、発光効率のよい３バンド狭帯域発光
けい光体を用いる方法がある。しかし、この３バ
ンド狭帯域発光けい光体は値段が高価であるため
次のような方法が一般に用いられている。すなわ
ちけい光ランプのバルブに被着させるけい光体を
２層にし、放電路側に値段の高価な３バンド狭帯
域発光けい光体よりなるけい光体層を設け、バル
ブ側に値段の安価なハロりん酸カルシウムなどか
らなるけい光体層を設ける方法が用いられてい
る。これは、放電路側に被着されたけい光体ほど
発光に大きく寄与することを利用したものであ
る。また、バルブ側のけい光体の平均粒径は7μ
程度の粒度の大きいけい光体を使用していた。以
上の方法は直管形けい光ランプにおいて常用され
ているが、この方法を曲管形けい光ランプに適用
するとバルブの屈曲工程の際、バルブに被着され
たけい光体がバルブに食い込みバルブ強度が低下
してしまうという欠点があつた。 Conventionally, as a method of improving the efficiency (lm/W) of a fluorescent lamp, there is a method of using a three-band narrowband light-emitting phosphor with high luminous efficiency. However, since this three-band narrowband light emitting phosphor is expensive, the following method is generally used. In other words, the phosphor layer attached to the bulb of the fluorescent lamp is made of two layers, the phosphor layer consisting of an expensive 3-band narrowband emitting phosphor is provided on the discharge path side, and the phosphor layer made of an expensive 3-band narrowband emitting phosphor is provided on the bulb side. A method of providing a phosphor layer made of calcium phosphate or the like is used. This is based on the fact that the closer the phosphor is attached to the discharge path, the more it contributes to light emission. In addition, the average particle size of the phosphor on the bulb side is 7μ
A phosphor with a relatively large particle size was used. The above method is commonly used for straight tube fluorescent lamps, but if this method is applied to curved tube fluorescent lamps, the phosphor adhered to the bulb will bite into the bulb during the bulb bending process, causing the bulb to bulge. The drawback was that the strength was reduced.
そこで本発明は上記の点に鑑みなされたもので
その目的とするところはバルブに２層のけい光体
層が設けられ、かつバルブ強度の向上をはかつた
曲管形けい光ランプを提供することにある。 The present invention has been made in view of the above points, and its object is to provide a curved tube-shaped fluorescent lamp in which the bulb is provided with two phosphor layers and the bulb strength is improved. There is a particular thing.
すなわち本発明は２層のけい光体層を有する曲
管形けい光ランプのバルブ側のけい光体の平均粒
径について、特に考慮することによりバルブ強度
の向上をはかつたものである。 That is, the present invention aims to improve the bulb strength by giving particular consideration to the average particle diameter of the phosphor on the bulb side of a curved fluorescent lamp having two phosphor layers.
以下本発明の一実施例を第１図ないし第３図を
用いて詳細に説明する。本実施例に係る曲管形け
い光ランプは三つのＵ字状から構成され、全体と
して一本の放電路をなし、略鞍形状に成形された
バルブ１の内表面に２層よりなる螢光体被膜が被
着されている。しかして放電路側の第一のけい光
体層２は３バンド狭帯域発光けい光体、例えばユ
ーロピウム付活ストロンチウム・カルシウム・ク
ロロアパタイトけい光体〔3Sr3（PO4）2CaCl／
Eu〕よりなる青色螢光体、セリウム・テルビウ
ム付活イツトリウムシリケートけい光体
〔Y2SiO5／Ce、Tb〕よりなる緑色けい光体、並
びにユーロピウム付活イツトリウムオキサイドけ
い光体〔Y2O3／Eu〕よりなる赤色けい光体の混
合物で平均粒径は4.5μである。一方バルブ１側の
第二のけい光体層３、は例えばアンチモン・マン
ガン付活ハロりん酸カルシウムけい光体〔3Ca3
（PO4）2・CaFCl／Sb・Mn〕よりなり、平均粒径
は4μである。またバルブ１の端部には電子放射
物質が被着されたタングステンフイラメント（い
ずれも図示しない）を有する電極構体４，４が封
着されている。さらにこの電極構体４，４には排
気管５が設けられており、この排気管の端部は封
止端６となつている。またタングステンフイラメ
ントと電気的に接続されたリード線７，７がバル
ブ１の外部に導出されている。 An embodiment of the present invention will be described in detail below with reference to FIGS. 1 to 3. The curved tube-shaped fluorescent lamp according to this embodiment is composed of three U-shaped parts, which form a single discharge path as a whole, and has two layers of fluorescent light on the inner surface of a bulb 1 formed into a substantially saddle shape. A body coating is applied. The first phosphor layer 2 on the discharge path side is therefore a three-band narrowband emitting phosphor, for example a europium-activated strontium-calcium-chloroapatite phosphor [3Sr 3 (PO 4 ) 2 CaCl/
A blue phosphor made of cerium-terbium-activated yttrium silicate phosphor [Y 2 SiO 5 /Ce, Tb], and a green phosphor made of europium-activated yttrium silicate phosphor [Y 2 A mixture of red phosphors consisting of O 3 /Eu] with an average particle size of 4.5μ. On the other hand, the second phosphor layer 3 on the bulb 1 side is made of, for example, an antimony-manganese activated calcium halophosphate phosphor [3Ca 3
(PO 4 ) 2・CaFCl/Sb・Mn], and the average particle size is 4μ. Moreover, electrode structures 4, 4 each having a tungsten filament (none of which is shown) coated with an electron emitting material are sealed to the end of the bulb 1. Further, the electrode structures 4, 4 are provided with an exhaust pipe 5, and the end of this exhaust pipe is a sealed end 6. Further, lead wires 7, 7 electrically connected to the tungsten filament are led out to the outside of the bulb 1.
以上の構成を有する曲管形けい光ランプはバル
ブ側の第二のけい光体層に使用するアンチモン・
マンガン付活ハロりん酸カルシウムけい光体
〔3Ca3（PO4）2・CaFCl／Sb・Mn〕の平均粒径を
従来の7μの曲管形けい光ランプと比較すると、
光束はほぼ同一、バルブ強度は約２倍という結果
が得られた。ここでバルブ強度の評価は、バルブ
を曲折したとき、バルブが最も延びて肉厚の薄く
なつている部分に直径10mmで3.5ｇの金属球を高
さを変えて自然落下させ、バルブが破損したとき
の落下エネルギー（ｇcm）を求め、これを比較す
ることにより得た。同様の実験を第一および第二
のけい光体層のけい光体の平均粒径を種々変えて
おこない、その結果を第２図に示す。図中曲線
ａ，ｂ，ｃ，ｄは第一のけい光体層のけい光体の
平均粒径がそれぞれ6.5μ、5.3μ、4.5μ、3.0μの結
果を示す。またこの場合の値はすべて第一および
第二のけい光体層のけい光体の平均粒径がそれぞ
れ4.5μ、7μの値を基準として百分率で表示してあ
る。またここでけい光体の成分は第一および第二
のけい光体層とも上記実施例と同一である。 The curved fluorescent lamp with the above structure uses antimony for the second phosphor layer on the bulb side.
Comparing the average particle size of the manganese-activated calcium halophosphate phosphor [3Ca 3 (PO 4 ) 2・CaFCl/Sb・Mn] with that of a conventional 7μ curved tube fluorescent lamp,
The result was that the luminous flux was almost the same, but the bulb intensity was approximately twice as high. To evaluate the strength of the bulb, when the bulb is bent, a metal ball with a diameter of 10 mm and weighing 3.5 g is dropped naturally at the thinnest part of the bulb at different heights, and the bulb is damaged. The falling energy (gcm) was calculated and compared. Similar experiments were conducted with various average particle sizes of the phosphors in the first and second phosphor layers, and the results are shown in FIG. Curves a, b, c, and d in the figure show the results when the average particle diameters of the phosphors in the first phosphor layer were 6.5 μ, 5.3 μ, 4.5 μ, and 3.0 μ, respectively. All values in this case are expressed as percentages based on the average particle diameters of the phosphors in the first and second phosphor layers of 4.5 μm and 7 μm, respectively. Moreover, the components of the phosphor here are the same as in the above embodiment for both the first and second phosphor layers.
第２図からわかるようにバルブ強度に大きく関
係するのはバルブ側の第二のけい光体層のけい光
体の平均粒径であり、第二のけい光体層のけい光
体の平均粒径が5μ以下になるとバルブ強度が急
に向上するのがわかる。 As can be seen from Figure 2, it is the average particle size of the phosphor in the second phosphor layer on the bulb side that is greatly related to the bulb intensity. It can be seen that the bulb strength suddenly improves when the diameter becomes 5μ or less.
これはバルブ１を加熱して曲折する際、けい光
体がバルブ１に食い込むためで、顕微鏡観察する
とこの食い込み現象がけい光体の粒度が小さいほ
ど少なくなることによる。 This is because the phosphor bites into the bulb 1 when the bulb 1 is heated and bent, and microscopic observation shows that this biting phenomenon becomes smaller as the particle size of the phosphor becomes smaller.
また第３図に示すようにけい光体の粒度変化に
伴う光束変化はあまりみられないことがわかる。
ここで曲線ａ，ｂ，ｃ，ｄは第一のけい光体層の
けい光体の平均粒径がそれぞれ6.5μ、5.3μ、4.5μ、
3.0μの結果を示している。これはけい光体の粒径
が小さくなると光束が減少するという従来の考え
方に反するが、バルブ側の第二のけい光体層のけ
い光体の平均粒径が小さくなると、けい光体のバ
ルブへの被着強度が向上し、またけい光体層の亀
裂が減少するため、全体として光束の変化がなく
なるからであると思われる。 Furthermore, as shown in FIG. 3, it can be seen that the luminous flux does not change much due to the change in the particle size of the phosphor.
Here, curves a, b, c, and d indicate that the average particle diameters of the phosphors in the first phosphor layer are 6.5μ, 5.3μ, and 4.5μ, respectively.
The results are shown for 3.0μ. This goes against the conventional idea that the luminous flux decreases as the particle size of the phosphor decreases, but as the average particle size of the phosphor in the second phosphor layer on the bulb side decreases, This seems to be because the adhesion strength to the phosphor layer is improved and cracks in the phosphor layer are reduced, so that there is no change in the luminous flux as a whole.
以上の実施例ではけい光ランプは略鞍形状であ
るが、Ｕ字状あるいは環状などの曲管形けい光ラ
ンプでもよい。またけい光体層も２層に限らず第
一のけい光体層と第二のけい光体層の間に要すれ
ば第三のけい光体層を設けてもよい。 In the above embodiments, the fluorescent lamp has a substantially saddle shape, but it may also be a curved tube shaped fluorescent lamp, such as a U-shape or an annular shape. Further, the number of phosphor layers is not limited to two, and a third phosphor layer may be provided between the first phosphor layer and the second phosphor layer if necessary.
以上本発明によればけい光体層を二層にし、放
電路側に３バンド狭帯域発光けい光体層を設ける
ことにより高効率を達成できるという利点をそこ
なうことなくバルブ強度の向上をはかることがで
きる。 As described above, according to the present invention, it is possible to improve the bulb strength without sacrificing the advantage of achieving high efficiency by forming the phosphor layer into two layers and providing a 3-band narrowband light-emitting phosphor layer on the discharge path side. can.
第１図は本発明の一実施例を示す曲管形管けい
光ランプの構成を示す一部切欠斜視図、第２図は
けい光体の平均粒径とバルブ強度の関係を示す特
性図、第３図はけい光体の平均粒径と光束の関係
を示す特性図である。
１……バルブ、２……第一のけい光体層、３…
…第二のけい光体層。
FIG. 1 is a partially cutaway perspective view showing the structure of a curved fluorescent lamp according to an embodiment of the present invention; FIG. 2 is a characteristic diagram showing the relationship between the average particle diameter of the phosphor and the bulb intensity; FIG. 3 is a characteristic diagram showing the relationship between the average particle diameter of the phosphor and the luminous flux. 1...Bulb, 2...First phosphor layer, 3...
...Second phosphor layer.
Claims (1)
のけい光体層が被着された後屈曲される曲管形け
い光ランプにおいて、放電路側の第一のけい光体
層は３バンド狭帯域発光けい光体よりなりガラス
バルブ側の第二のけい光体層は平均粒径が5μ以
下の他のけい光体よりなることを特徴とする曲管
形けい光ランプ。1. In a curved tube fluorescent lamp that is bent after two or more phosphor layers of different compositions are deposited on the inner wall of a glass bulb, the first phosphor layer on the discharge path side emits three-band narrowband light. A curved tube-shaped fluorescent lamp characterized in that the second phosphor layer on the glass bulb side is made of a phosphor and is made of another phosphor having an average particle size of 5 μm or less.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7069281A JPS57187855A (en) | 1981-05-13 | 1981-05-13 | Bent tube type fluorescent lamp |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7069281A JPS57187855A (en) | 1981-05-13 | 1981-05-13 | Bent tube type fluorescent lamp |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS57187855A JPS57187855A (en) | 1982-11-18 |
| JPH0216545B2 true JPH0216545B2 (en) | 1990-04-17 |
Family
ID=13438939
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP7069281A Granted JPS57187855A (en) | 1981-05-13 | 1981-05-13 | Bent tube type fluorescent lamp |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS57187855A (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5153479A (en) * | 1991-05-13 | 1992-10-06 | Gte Products Corporation | Miniature low-wattage neon light source |
| US5272406A (en) * | 1991-05-13 | 1993-12-21 | Gte Products Corporation | Miniature low-wattage neon light source |
| US5134336A (en) * | 1991-05-13 | 1992-07-28 | Gte Products Corporation | Fluorescent lamp having double-bore inner capillary tube |
-
1981
- 1981-05-13 JP JP7069281A patent/JPS57187855A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS57187855A (en) | 1982-11-18 |
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