JP3404987B2 - Electrodeless discharge lamp - Google Patents
Electrodeless discharge lampInfo
- Publication number
- JP3404987B2 JP3404987B2 JP10638795A JP10638795A JP3404987B2 JP 3404987 B2 JP3404987 B2 JP 3404987B2 JP 10638795 A JP10638795 A JP 10638795A JP 10638795 A JP10638795 A JP 10638795A JP 3404987 B2 JP3404987 B2 JP 3404987B2
- Authority
- JP
- Japan
- Prior art keywords
- phosphor layer
- bulb
- discharge lamp
- electrodeless discharge
- mixed
- 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 - Lifetime
Links
Landscapes
- Luminescent Compositions (AREA)
- Discharge Lamps And Accessories Thereof (AREA)
Description
【０００１】[0001]
【産業上の利用分野】本発明は、ランプ内部に電極を持
たず、外部からの高周波電磁界によってランプ内部の放
電ガスを励起発光させる無電極放電ランプに関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an electrodeless discharge lamp which has no electrode inside the lamp and which excites and emits discharge gas inside the lamp by a high frequency electromagnetic field from the outside.
【０００２】[0002]
【従来の技術】従来より、透光性バルブ（以下、バルブ
と呼ぶ。）の周囲に巻回された誘導コイルに高周波電流
を通電することにより、誘導コイルの周囲に発生する高
周波電磁界をバルブに封入された放電ガスに対して作用
させ、励起発光させるようにした無電極放電ランプが知
られている。このような無電極放電ランプにおいては、
これまでに長時間点灯せずに放置したランプを、暗所始
動するまでに時間がかかる、という問題点が知られてい
る。2. Description of the Related Art Conventionally, a high-frequency electromagnetic field generated around an induction coil is supplied by energizing a high-frequency current through an induction coil wound around a translucent valve (hereinafter referred to as a valve). There is known an electrodeless discharge lamp that is caused to act on a discharge gas sealed in a lamp to cause excitation and light emission. In such an electrodeless discharge lamp,
It is known that it takes time to start a lamp that has been left unlit for a long time in a dark place.
【０００３】[0003]
【発明が解決しようとする課題】本発明は上記問題点に
鑑みてなされたもので、その目的とするところは、点灯
初期に必要な偶発電子をバルブ内に数多く発生させるこ
とにより、暗所での始動性を向上可能な無電極放電ラン
プを提供することである。SUMMARY OF THE INVENTION The present invention has been made in view of the above problems, and an object of the present invention is to generate a large number of accidental electrons necessary in the initial stage of lighting in a bulb so that it can be stored in a dark place. It is an object of the present invention to provide an electrodeless discharge lamp capable of improving the startability of the above.
【０００４】[0004]
【課題を解決するための手段】上記問題点を解決するた
めに、請求項１記載の発明によれば、透光性バルブ内に
放電ガスを封入すると共に、前記透光性バルブの内壁面
に蛍光体層が近接配置された無電極放電ランプにおい
て、前記蛍光体層は、ユーロピウム付活バリウム・マグ
ネシウム・アルミネート（ＢａＭｇ2Ａｌ16Ｏ27：Ｅ
ｕ）が混入された、光色に影響を及ぼさない膜厚の第１
の蛍光体層と、光色を決定する第２の蛍光体層とからな
り、前記第２の蛍光体層は、前記第１の蛍光体層よりも
放電空間側に配設することを特徴とする。[Means for Solving the Problems] To solve the above problems
Therefore, according to the invention of claim 1, in the translucent bulb,
Inner wall surface of the translucent bulb while enclosing discharge gas
For an electrodeless discharge lamp in which the phosphor layer is closely arrangedHey
The phosphor layer has europiumLiveBarium mug
Nesium aluminate (BaMg2Al16O27: E
u) was mixed, The first of the film thickness that does not affect the light color
And a second phosphor layer that determines the color of the light.
The second phosphor layer is more than the first phosphor layer.
Arranged on the discharge space sideIt is characterized by
【０００５】請求項２記載の発明によれば、透光性バル
ブ内に放電ガスを封入すると共に、前記透光性バルブの
内壁面に蛍光体層が近接配置された無電極放電ランプに
おいて、前記蛍光体層は、ユーロピウム付活バリウム・
マグネシウム・アルミネート（ＢａＭｇ 2 Ａｌ 16 Ｏ 27 ：
Ｅｕ）が混入された、光色に影響を及ぼさない膜厚の第
１の蛍光体層と、光色を決定する第２の蛍光体層とから
なり、前記透光性バルブ内で、且つ前記放電ガスの励起
発光が届きにくいところにのみ前記第１の蛍光体層を配
置したことを特徴とする。According to the second aspect of the present invention, the translucent bulb is used.
The discharge gas is sealed in the bulb and the
For electrodeless discharge lamps with phosphor layers closely arranged on the inner wall surface
In the above, the phosphor layer is europium-activated barium.
Magnesium aluminate (BaMg 2 Al 16 O 27) :
Eu) is mixed and the thickness of the first layer does not affect the light color.
From one phosphor layer and a second phosphor layer that determines the light color
In the translucent bulb and excitation of the discharge gas
Place the first phosphor layer only where light emission is difficult to reach.
It is characterized by being placed .
【０００６】[0006]
【０００７】[0007]
【作用】請求項１記載の発明によれば、ユーロピウム付
活バリウム・マグネシウム・アルミネート（ＢａＭｇ2
Ａｌ16Ｏ27：Ｅｕ）が混入された、光色に影響を及ぼさ
ない膜厚の蛍光体層２ｂ１を、バルブの内壁に塗布、も
しくはバルブの内壁に近接配置すると共に、光色を決定
する蛍光体層２ｂ２を、蛍光体層２ｂ１よりも放電空間
側に近い場所に配設する。そして、暗所始動時に、誘導
コイルに電流を供給することにより、無電極放電ランプ
の点灯初期に必要な偶発電子を数多く発生させる。According to the invention described in claim 1, with europium
Active barium / magnesium / aluminate (BaMg 2
Al 16 O 27 : Eu) mixed , affecting the light color
The phosphor layer 2b1 having a non-thickness is applied to the inner wall of the bulb.
Ideally located close to the inner wall of the bulb and determine the color of the light
The fluorescent material layer 2b2 that is used as a discharge space more than the fluorescent material layer 2b1.
Place it near the side. Then, at the time of starting in the dark, by supplying a current to the induction coil, a large number of accidental electrons necessary for the initial lighting of the electrodeless discharge lamp are generated.
【０００８】請求項２記載の発明によれば、ユーロピウ
ム付活バリウム・マグネシウム・アルミネート（ＢａＭ
ｇ2Ａｌ16Ｏ27：Ｅｕ）が混入された蛍光体層２ｂ１
を、放電ガスの励起発光が届きにくく、且つバルブの内
壁に塗布、もしくはバルブの内壁に近接配置すると共
に、光色を決定する蛍光体層２ｂ２を、バルブの内壁に
塗布、もしくはバルブの内壁に近接配置する。そして、
暗所始動時に、誘導コイルに電流を供給することによ
り、無電極放電ランプの点灯初期に必要な偶発電子を数
多く発生させる。According to the second aspect of the present invention, europium-activated barium magnesium aluminate (BaM
g 2 Al 16 O 27 : Eu) mixed phosphor layer 2b1
It is difficult for the excited emission of the discharge gas to reach the inside of the bulb.
It is common to apply it on the wall or place it close to the inner wall of the valve.
In addition, the phosphor layer 2b2 that determines the light color is attached to the inner wall of the bulb.
Apply or place close to the inner wall of the valve. And
By supplying a current to the induction coil at the time of starting in the dark, a large number of accidental electrons necessary for the initial lighting of the electrodeless discharge lamp are generated.
【０００９】[0009]
【００１０】[0010]
（実施例１）本発明に係る第１実施例の断面側面図を図
１に示す。(Embodiment 1) A sectional side view of a first embodiment according to the present invention is shown in FIG.
【００１１】１はレフ型のバルブであって、気密性で且
つ透光性を有し、バルブの内部には放電ガスとして水銀
とアルゴンガスとが封入されており、例えばアルゴンガ
スを数Ｔｏｒｒ程度、水銀を１０数ｍｇ程度封入する。
バルブ１の内壁面には、無電極放電ランプの発光色を決
定する様な三波長希土類蛍光体層（以下、蛍光体層と呼
ぶ。）２ａが塗布されており、バルブ１の外壁面に沿っ
て誘導コイル３が巻回されている。バルブ１の下部には
ランプを照明器具（図示しない）に固定するための口金
４が取付られている。Reference numeral 1 is a reflex type valve, which is airtight and transparent, and mercury and argon gas are enclosed as discharge gas inside the valve. For example, argon gas is about several Torr. Enclose about 10 mg of mercury.
The inner wall surface of the bulb 1 is coated with a three-wavelength rare earth phosphor layer (hereinafter referred to as a phosphor layer) 2a that determines the emission color of the electrodeless discharge lamp, and extends along the outer wall surface of the bulb 1. The induction coil 3 is wound around. A base 4 for fixing the lamp to a lighting fixture (not shown) is attached to the lower portion of the bulb 1.
【００１２】ここで蛍光体層としては、白色（赤色＜Ｙ
2 Ｏ3 ：Ｅｕ＞，緑色＜ＬａＰＯ4：Ｃｅ．Ｔｂ＞，青
色＜ＢａＭｇ2 Ａｌ16Ｏ27：Ｅｕ＞を混入），青色（青
色＜ＢａＭｇ2 Ａｌ16Ｏ27：Ｅｕ＞）のＢａＭｇ2 Ａｌ
16Ｏ27：Ｅｕ（ＢＡＭ）が混入されたもの、及び緑色
（緑色＜ＬａＰＯ4 ：Ｃｅ．Ｔｂ＞），電球色（赤色＜
Ｙ2 Ｏ3 ：Ｅｕ＞，緑色＜ＬａＰＯ4 ：Ｃｅ．Ｔｂ＞を
混入）のＢＡＭが混入されてないものなどがある。Here, the phosphor layer is white (red <Y
2 O 3 : Eu>, green <LaPO 4 : Ce. Tb>, blue <BaMg 2 Al 16 O 27 : Eu>), and blue (blue <BaMg 2 Al 16 O 27 : Eu>) BaMg 2 Al
16 O 27 : Eu (BAM) mixed, green (green <LaPO 4 : Ce.Tb>), bulb color (red <
Y 2 O 3: Eu>, green <LaPO 4: Ce. Tb> mixed) BAM is not mixed.
【００１３】図２は、白色，青色，緑色，電球色の各々
の蛍光体層が塗布された無電極放電ランプの、暗所での
初始動性を示す特性図であり、ここでは、無電極放電ラ
ンプを、８時間放電してから５００〜１０００Ｌｘの空
間に放置した後に暗所始動を行った場合の、初始動時間
を計測したものを示す。FIG. 2 is a characteristic diagram showing the initial startability in the dark of an electrodeless discharge lamp coated with white, blue, green and incandescent phosphor layers. The figure shows the measured initial starting time when the discharge lamp is discharged for 8 hours, left in a space of 500 to 1000 Lx, and then started in the dark.
【００１４】図２に示す特性図より、ＢａＭｇ2 Ａｌ16
Ｏ27：Ｅｕが混入している（ＢＭＡ有）蛍光体層が塗布
された無電極放電ランプは、ＢａＭｇ2 Ａｌ16Ｏ27：Ｅ
ｕが混入していない（ＢＭＡ無）蛍光体層が塗布された
無電極放電ランプに比べて、１桁〜２桁程暗所での初始
動時間が短縮されるのが分かる。From the characteristic diagram shown in FIG. 2, BaMg 2 Al 16
An electrodeless discharge lamp coated with a phosphor layer mixed with O 27 : Eu (with BMA) is BaMg 2 Al 16 O 27 : E.
It can be seen that the initial starting time in the dark is shortened by one to two digits as compared with the electrodeless discharge lamp coated with the phosphor layer in which u is not mixed (without BMA).
【００１５】よって、図１に示す様に、ＢＡＭが混入し
た蛍光体層２ａをバルブ１の内壁面に塗布することによ
り、点灯初期に必要な偶発電子をバルブ１内部にに数多
く発生させることができ、暗所での始動性が向上する。
なお、バルブ１に塗布された保護膜（図示せず）は始動
時間には影響しない。Therefore, as shown in FIG. 1, by coating the phosphor layer 2a mixed with BAM on the inner wall surface of the bulb 1, many accidental electrons necessary for the initial lighting can be generated inside the bulb 1. This improves the startability in the dark.
The protective film (not shown) applied to the valve 1 does not affect the starting time.
【００１６】（実施例２）本発明に係る第２実施例の断
面側面図を図３に示す。(Second Embodiment) FIG. 3 is a sectional side view of a second embodiment according to the present invention.
【００１７】図１に示した第１実施例と異なる点は、バ
ルブ１の内壁面に、二層に重ねて蛍光体層２ｂ１，２ｂ
２を形成したことであり、その他の第１実施例と同一構
成には同一符号を付すことにより説明を省略する。The difference from the first embodiment shown in FIG. 1 is that the phosphor layers 2b1 and 2b are stacked on the inner wall surface of the bulb 1 in two layers.
2 is formed, and the same configurations as those of the other first embodiment are denoted by the same reference numerals and the description thereof will be omitted.
【００１８】ここで、バルブ１の内壁面に塗布された蛍
光体層２ｂ１はＢＡＭが混入された蛍光体層であり、無
電極放電ランプの発光色に影響のない程度の膜厚を有す
る。また、バルブ１の内壁面近傍、且つ蛍光体層２ｂ１
よりバルブ１内の放電空間８に近い方に配設された蛍光
体層２ｂ２は、例えば上述の様な白色，青色，緑色，電
球色などの任意の色を有する蛍光体層であり、無電極放
電ランプの発光色を決める程度の膜厚を有する。なお、
本実施例では蛍光体層を二層に重ねたが、少なくとも一
層の蛍光体層が蛍光体層２ｂ１の様なものであれば、三
層以上重ねてもよい。Here, the phosphor layer 2b1 coated on the inner wall surface of the bulb 1 is a phosphor layer mixed with BAM and has a thickness that does not affect the emission color of the electrodeless discharge lamp. Further, in the vicinity of the inner wall surface of the bulb 1 and the phosphor layer 2b1
The phosphor layer 2b2 disposed closer to the discharge space 8 in the bulb 1 is a phosphor layer having any color such as white, blue, green, and light bulb color as described above, and has no electrode. It has a film thickness that determines the emission color of the discharge lamp. In addition,
In this embodiment, two phosphor layers are stacked, but three or more may be stacked as long as at least one phosphor layer is the phosphor layer 2b1.
【００１９】（実施例３）本発明に係る第３実施例の断
面側面図を図４に示す。(Third Embodiment) FIG. 4 is a sectional side view of the third embodiment according to the present invention.
【００２０】図３に示した第２実施例と異なる点は、蛍
光体層２ｂ１の代わりに、バルブ１内部に封入された放
電ガスの励起発光が届きにくい場所、例えば図４に示す
様な、バルブ１内部且つステム９の壁面に、ＢＡＭが混
入された蛍光体層２ｃを塗布すると共に、ステム９の側
面からバルブ１内部へ向かって、且つ水平方向に対して
略平行にガラス部１０を設けたことであり、その他の第
１実施例と同一構成には同一符号を付すことにより説明
を省略する。The difference from the second embodiment shown in FIG. 3 is that, instead of the phosphor layer 2b1, it is hard to reach the excited emission of the discharge gas enclosed in the bulb 1, for example, as shown in FIG. The phosphor layer 2c mixed with BAM is applied to the inside of the bulb 1 and the wall surface of the stem 9, and the glass portion 10 is provided from the side surface of the stem 9 toward the inside of the bulb 1 and substantially parallel to the horizontal direction. Therefore, the same configurations as those of the other first embodiment are denoted by the same reference numerals and the description thereof will be omitted.
【００２１】水銀から放電される紫外線は、ガラス部１
０により吸収されるので、放電空間８と連なった空間に
塗布されている蛍光体層２ｃは発光しにくく、無電極放
電ランプの発光色には影響を与えない。なお、蛍光体層
２ｃは、バルブ１内部に封入された放電ガスの励起発光
が届きにくい場所で、無電極放電ランプの発光色に影響
を与えない場所ならどこに塗布してもよい。Ultraviolet rays discharged from mercury are the glass part 1
Since it is absorbed by 0, the phosphor layer 2c applied to the space continuous with the discharge space 8 is unlikely to emit light and does not affect the emission color of the electrodeless discharge lamp. The phosphor layer 2c may be applied to any place where the excitation and emission of the discharge gas enclosed in the bulb 1 does not reach easily and does not affect the emission color of the electrodeless discharge lamp.
【００２２】上記第２，第３実施例に示した様な構成し
たことにより、点灯初期に必要な偶発電子をバルブ１に
数多く発生させることができ、任意の光色を得ることが
可能であると共に、暗所での始動性を向上可能となる。With the structure as shown in the second and third embodiments, a large number of accidental electrons necessary for the initial lighting can be generated in the bulb 1 and an arbitrary light color can be obtained. At the same time, it becomes possible to improve the startability in the dark.
【００２３】なお、上記全ての実施例に於て、蛍光体層
２ａ，２ｂ１，２ｃはバルブ１に塗布したが、蛍光体層
２ａ，２ｂ１，２ｃを塗布したものをバルブ１内部に配
設する様に構成してもよい。In all of the above embodiments, the phosphor layers 2a, 2b1 and 2c are applied to the bulb 1. However, the phosphor layers 2a, 2b1 and 2c are applied to the interior of the bulb 1. It may be configured like this.
【００２４】[0024]
【００２５】[0025]
【発明の効果】
請求項１及び２記載の発明によれば、任
意の光色を得ることが可能であると共に、暗所での始動
性を向上可能な無電極放電ランプを提供できる。 Effects of the Invention According to the invention of claim 1 and 2 wherein, with it is possible to obtain an arbitrary emission color can provide an electrodeless discharge lamp which can improve the startability of the dark.
【図１】本発明に係る第１実施例の断面側面図である。FIG. 1 is a sectional side view of a first embodiment according to the present invention.
【図２】蛍光体層の色と暗所での初始動性との関係を示
す特性図である。FIG. 2 is a characteristic diagram showing the relationship between the color of a phosphor layer and the initial starting property in a dark place.
【図３】本発明に係る第２実施例の断面側面図である。FIG. 3 is a sectional side view of a second embodiment according to the present invention.
【図４】本発明に係る第３実施例の断面側面図である。FIG. 4 is a sectional side view of a third embodiment according to the present invention.
１ バルブ ２ 蛍光体層 1 valve 2 Phosphor layer
───────────────────────────────────────────────────── フロントページの続き (72)発明者 西岡 浩二 大阪府門真市大字門真1048番地松下電工 株式会社内 (56)参考文献 特開 平５−174790（ＪＰ，Ａ) (58)調査した分野(Int.Cl.7，ＤＢ名) H01J 61/44 C09K 11/64 CPM H01J 65/04 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Koji Nishioka 1048, Kadoma, Kadoma City, Osaka Prefecture Matsushita Electric Works, Ltd. (56) Reference JP-A-5-174790 (JP, A) (58) Fields investigated (58) Int.Cl. 7 , DB name) H01J 61/44 C09K 11/64 CPM H01J 65/04
Claims (2)
共に、前記透光性バルブの内壁面に蛍光体層が近接配置
された無電極放電ランプにおいて、前記蛍光体層は、ユ
ーロピウム付活バリウム・マグネシウム・アルミネート
（ＢａＭｇ2Ａｌ16Ｏ27：Ｅｕ）が混入された、光色に
影響を及ぼさない膜厚の第１の蛍光体層と、光色を決定
する第２の蛍光体層とからなり、前記第２の蛍光体層
は、前記第１の蛍光体層よりも放電空間側に配設するこ
とを特徴とする無電極放電ランプ。Together to enclose the discharge gas to the claim 1] in the translucent bulb, at the electrodeless discharge lamp phosphor layer on the inner wall surface of the transparent bulb is arranged close, the phosphor layer, europium activator barium magnesium aluminate (BaMg 2 Al 16 O 27: Eu) are mixed, the light color
Determines the light color and the first phosphor layer with a thickness that does not affect
And a second phosphor layer for forming the second phosphor layer.
, The first of the electrodeless discharge lamp, wherein the this <br/> than phosphor layer disposed on the discharge space side.
共に、前記透光性バルブの内壁面に蛍光体層が近接配置
された無電極放電ランプにおいて、前記蛍光体層は、ユ
ーロピウム付活バリウム・マグネシウム・アルミネート
（ＢａＭｇ 2 Ａｌ 16 Ｏ 27 ：Ｅｕ）が混入された、光色に
影響を及ぼさない膜厚の第１の蛍光体層と、光色を決定
する第２の蛍光体層とからなり、前記透光性バルブ内
で、且つ前記放電ガスの励起発光が届きにくいところに
のみ前記第１の蛍光体層を配置したことを特徴とする無
電極放電ランプ。2. When a discharge gas is enclosed in a translucent bulb
A phosphor layer is placed close to the inner wall surface of the translucent bulb.
In the above described electrodeless discharge lamp, the phosphor layer is
-Ropium activated barium / magnesium / aluminate
(BaMg 2 Al 16 O 27 : Eu) is mixed into the light color
Determines the light color and the first phosphor layer with a thickness that does not affect
And a second phosphor layer that
And in places where the excited emission of the discharge gas is difficult to reach
An electrodeless discharge lamp comprising the first phosphor layer only .
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10638795A JP3404987B2 (en) | 1995-04-28 | 1995-04-28 | Electrodeless discharge lamp |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10638795A JP3404987B2 (en) | 1995-04-28 | 1995-04-28 | Electrodeless discharge lamp |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH08306340A JPH08306340A (en) | 1996-11-22 |
| JP3404987B2 true JP3404987B2 (en) | 2003-05-12 |
Family
ID=14432298
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP10638795A Expired - Lifetime JP3404987B2 (en) | 1995-04-28 | 1995-04-28 | Electrodeless discharge lamp |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3404987B2 (en) |
-
1995
- 1995-04-28 JP JP10638795A patent/JP3404987B2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPH08306340A (en) | 1996-11-22 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| KR100802665B1 (en) | Low-pressure gas discharge lamp | |
| US3707641A (en) | Discharge device which utilizes a mixture of two fluorescent materials | |
| JPH0624116B2 (en) | Hot cathode low pressure rare gas discharge fluorescent lamp | |
| JP3189285B2 (en) | Electrodeless low pressure discharge lamp | |
| JP3404987B2 (en) | Electrodeless discharge lamp | |
| JPH08306341A (en) | Fluorescent lamp | |
| JPH05190152A (en) | Fluorescent lamp for display | |
| JP2005276691A (en) | Fluorescent lamp | |
| JP2782794B2 (en) | Electrodeless discharge lamp | |
| JP4681089B2 (en) | Fluorescent lamp with special phosphor blend | |
| JP3470449B2 (en) | Cold cathode discharge lamp device, lighting device using the same, backlight, liquid crystal display device | |
| JP2773245B2 (en) | Electrodeless discharge lamp | |
| JP3376608B2 (en) | Cold cathode discharge lamp | |
| JP2000156203A (en) | Cold cathode fluorescent lamp | |
| JPH1050261A (en) | Discharge lamp, lighting system, and display device | |
| JPH0992218A (en) | Fluorescent lamp and its manufacture | |
| JPH08273620A (en) | Fluorescent lamp and lighting apparatus thereof and light source apparatus and liquid crystal display apparatus employing thereof | |
| JP2001351579A (en) | Fluorescent lamp and lighting system | |
| KR930003837B1 (en) | Hot cathode type low pressure rare gas discharge fluorescent lamp | |
| JPH1125916A (en) | Cold-cathode fluorescent lamp and lighting system | |
| JPH05225960A (en) | Electrodeless low pressure rare gas type fluorescent lamp | |
| JP3203804B2 (en) | Capillary fluorescent lamp and backlight device | |
| JP2002289146A (en) | Fluorescent lamp and lighting device | |
| JPH0676798A (en) | Metal halide lamp | |
| JP2001052651A (en) | Dual tube type fluorescent lamp |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20080307 Year of fee payment: 5 |
|
| FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20090307 Year of fee payment: 6 |
|
| S533 | Written request for registration of change of name |
Free format text: JAPANESE INTERMEDIATE CODE: R313533 |
|
| FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20090307 Year of fee payment: 6 |
|
| R350 | Written notification of registration of transfer |
Free format text: JAPANESE INTERMEDIATE CODE: R350 |
|
| FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20100307 Year of fee payment: 7 |
|
| FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20100307 Year of fee payment: 7 |
|
| FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20110307 Year of fee payment: 8 |
|
| FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20120307 Year of fee payment: 9 |
|
| FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20120307 Year of fee payment: 9 |
|
| FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20130307 Year of fee payment: 10 |