JPS6367315B2 - - Google Patents
Info
- Publication number
- JPS6367315B2 JPS6367315B2 JP58027222A JP2722283A JPS6367315B2 JP S6367315 B2 JPS6367315 B2 JP S6367315B2 JP 58027222 A JP58027222 A JP 58027222A JP 2722283 A JP2722283 A JP 2722283A JP S6367315 B2 JPS6367315 B2 JP S6367315B2
- Authority
- JP
- Japan
- Prior art keywords
- light
- tubes
- light source
- discharge space
- discharge
- 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
- 239000003086 colorant Substances 0.000 claims description 13
- QSHDDOUJBYECFT-UHFFFAOYSA-N mercury Chemical compound [Hg] QSHDDOUJBYECFT-UHFFFAOYSA-N 0.000 claims description 9
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 claims description 6
- 238000000576 coating method Methods 0.000 claims description 6
- 229910052753 mercury Inorganic materials 0.000 claims description 4
- 239000011248 coating agent Substances 0.000 description 4
- 239000007789 gas Substances 0.000 description 4
- 239000011521 glass Substances 0.000 description 3
- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical compound [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000010894 electron beam technology Methods 0.000 description 2
- 238000007789 sealing Methods 0.000 description 2
- 229910052786 argon Inorganic materials 0.000 description 1
- 238000009792 diffusion process Methods 0.000 description 1
- 239000000945 filler Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 239000003973 paint Substances 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
- H01J61/30—Vessels; Containers
- H01J61/32—Special longitudinal shape, e.g. for advertising purposes
- H01J61/327—"Compact"-lamps, i.e. lamps having a folded discharge path
Landscapes
- Vessels And Coating Films For Discharge Lamps (AREA)
- Devices For Indicating Variable Information By Combining Individual Elements (AREA)
Description
【発明の詳細な説明】
〔発明の技術分野〕
本発明は、野球場や競技場に設置される表示ス
クリーン等において、多数配列する光源として、
あるいは照明による演出等に単管で用いる光源と
しての低圧水銀蒸気放電灯に関する。[Detailed Description of the Invention] [Technical Field of the Invention] The present invention provides a light source arranged in large numbers on a display screen installed in a baseball stadium or stadium.
It also relates to a low-pressure mercury vapor discharge lamp as a single-tube light source for lighting effects.
最近、野球場や競技場等においては、テレビカ
メラやVTRに納められた画像を大型の表示スク
リーン上に写し出して表示するデイスプレイ装置
が設置されている。この装置は表示スクリーン上
に数千ないし数万個の光源を密に配置し、これら
の光源を画像信号に応じて選択的に適宜点灯させ
ることにより、上記表示スクリーン上に所定の画
像を表示するようになつている。
Recently, display devices have been installed at baseball stadiums, stadiums, and the like to project and display images stored in television cameras and VTRs on large display screens. This device displays a predetermined image on the display screen by disposing thousands to tens of thousands of light sources densely on the display screen and selectively turning on these light sources in accordance with image signals. It's becoming like that.
ところで、この種の光源としては、現在電子ビ
ームにより青、緑、赤のいずれかの単色を発光さ
せるものと、透光性塗料を塗布したカラー電球に
より、青、緑、赤のいずれかの単色を発光させる
ものが知られている。 By the way, this type of light source currently uses an electron beam to emit a single color of blue, green, or red, and a color light bulb coated with translucent paint that emits a single color of blue, green, or red. There are known devices that emit light.
しかしながら、上記電子ビームは消費電力が少
なく長寿命である等の利点を有するが、光源自体
が高価なものとなるためコスト高となる難点があ
る。また、電球は光源自体が安価で制御回路も簡
単となる等の利点はあるが、反面消費電力が大き
く、かつ寿命が短い等の欠点を有している。な
お、このような欠点は表示スクリーン上に配設す
る場合に限らない。例えば従来からカラー電球
は、店舗や舞台などの演出表示のための光源とし
て用いられているが、このような使用にあたつて
も上記のような欠点が生じていた。 However, although the electron beam has advantages such as low power consumption and long life, it has the disadvantage that the light source itself is expensive, resulting in high cost. Furthermore, although light bulbs have advantages such as the light source itself being inexpensive and the control circuit being simple, they also have disadvantages such as high power consumption and short lifespan. Note that such a drawback is not limited to the case where the display screen is provided. For example, color light bulbs have conventionally been used as light sources for displaying performances in stores, stages, etc., but even when used in this way, the above-mentioned drawbacks have arisen.
そこで、他の光源としてけい光ランプに代表さ
れる低圧水銀蒸気放電灯の使用が考えられる。け
い光ランプは消費電力が少なく長寿命で、しかも
輝度が高くコストも比較的安価であることは周知
の通りであり、この点から見れば光源として必要
な点を充分に満たしていると言える。 Therefore, it is conceivable to use a low-pressure mercury vapor discharge lamp, typified by a fluorescent lamp, as another light source. It is well known that fluorescent lamps consume less power, have a long life, have high brightness, and are relatively inexpensive, and from this point of view, they can be said to fully meet the requirements of a light source.
一方、従来の表示用あるいは演出表示などの光
源は赤、青、緑の各単色を発光する３個の光源が
１組になつて使用されている。したがつて、この
赤、青、緑の各色を１つの光源で発光できれば、
３色分の光源全体としてのコンパクト化やコスト
の低減が可能となる。 On the other hand, conventional light sources for display or performance display use a set of three light sources that emit red, blue, and green light in a single color. Therefore, if each of these red, blue, and green colors can be emitted by one light source,
The entire light source for three colors can be made more compact and the cost can be reduced.
本発明はこのような事情にもとづいてなされた
もので、単一の光源でありながら目的や使用方法
に応じて発光色を適宜変えることができる低圧水
銀蒸気放電灯の提供を目的とする。
The present invention has been made based on the above circumstances, and an object of the present invention is to provide a low-pressure mercury vapor discharge lamp that uses a single light source but whose emission color can be changed as appropriate depending on the purpose and method of use.
すなわち、本発明は上記目的を達成するため、
透光性の外管内に形成された放電空間に、一端に
電極を有しかつ他端が開口された複数本の発光細
管を収容し、これら発光細管の内面には互いに異
なる色の光を発するけい光体被膜を被着し、かつ
上記放電空間内には水銀および希ガスを封入する
とともに、各発光細管の放電路に対して共通の単
一の共用電極を設けたことを特徴とする。
That is, in order to achieve the above object, the present invention
A plurality of light emitting tubes each having an electrode at one end and open at the other end are housed in a discharge space formed within a translucent outer tube, and the inner surfaces of these light emitting tubes emit light of different colors. It is characterized in that a phosphor coating is applied, mercury and rare gas are sealed in the discharge space, and a single common electrode is provided for the discharge path of each light emitting capillary.
以下本発明を、表示スクリーン上に多数配列す
る光源に適用した図面を参照して説明する。
The present invention will be described below with reference to drawings in which the present invention is applied to a large number of light sources arranged on a display screen.
第１図は例えば野球場や競技場の一角に設置さ
れる大型の表示スクリーンの概略図を示し、略矩
形状をなしたスクリーンボート１上には数千ない
し数万個の光源２…が密に配置されている。これ
ら光源２…はけい光ランプに代表される低圧水銀
蒸気放電灯であり、この詳細については第２図以
降に示されている。 FIG. 1 shows a schematic diagram of a large display screen installed, for example, in a corner of a baseball stadium or stadium. Thousands to tens of thousands of light sources 2 are densely mounted on a roughly rectangular screen boat 1. It is located in These light sources 2 are low-pressure mercury vapor discharge lamps typified by fluorescent lamps, and details thereof are shown in FIGS. 2 and subsequent figures.
すなわち、３は中空円筒状をなした外管であ
り、ガラス等の透光性材料によつて構成される。
外管３の一端部は略球面状をなした球面４で一体
に閉塞されているとともに、他端はそのまま開口
されており、この球面部４の外表面には好ましい
例として図示しない光拡散膜が被着されている。
このような外管３の他端開口部には、円板状をな
したガラス製のステム５が気密に封着されてお
り、この封着によつて外管３内には外方とは区画
独立された放電空間６が形成されている。そし
て、この放電空間６内には例えば３本の発光細管
７，８，９が収容されている。本実施例の発光細
管７，８，９は直管形のガラスバルブを途中から
略Ｕ字状に曲成することにより、両端部を互いに
隣接して同方向に位置させたもので、そのＵ字状
をなした曲成部１０から一端部までの長さは同じ
く曲成部１０から他端部までの長さよりも長く形
成され、かつＵ字状に曲成された発光細管７，
８，９の各直線部が少なくともフアラデー暗部を
超えた長さに形成されている。 That is, 3 is a hollow cylindrical outer tube, which is made of a translucent material such as glass.
One end of the outer tube 3 is integrally closed with a spherical surface 4 having a substantially spherical shape, and the other end is left open. As a preferable example, a light diffusing film (not shown) is provided on the outer surface of the spherical surface 4. is covered.
A disc-shaped glass stem 5 is hermetically sealed to the opening at the other end of the outer tube 3. Due to this sealing, there is no space inside the outer tube 3 that is separate from the outside. A discharge space 6 that is partitioned independently is formed. For example, three luminous thin tubes 7, 8, and 9 are housed within this discharge space 6. The light-emitting thin tubes 7, 8, and 9 of this embodiment are straight glass bulbs that are bent into a substantially U-shape from the middle so that both ends are located adjacent to each other in the same direction. The length from the curved part 10 in the shape of a letter to one end is also longer than the length from the curved part 10 to the other end, and the light emitting capillary 7 is bent in a U-shape.
Each of the straight portions 8 and 9 is formed to have a length that exceeds at least the Faraday dark portion.
また、ステム５上にはリード線１２，１２を介
して電極１１を支持する３つのステム管２０が封
着されており、このステム管２０とステム５との
封着部に、各発光細管７，８，９の一端部が封着
されている。この封着により上記発光細管７，
８，９は、その曲成部１０を球面部４に向け、か
つ他端開口部１６をステム５側に向けた姿勢でス
テム５上に固定されており、これら各発光細管
７，８，９の一端部に電極１１が位置されてい
る。このため発光細管７，８，９内には側面略Ｕ
字形の放電路１３，１４，１５が形成されてお
り、これら放電路１３，１４，１５は各発光細管
７，８，９の他端開口部１６を通じて放電空間６
内に連通されている。なお、発光細管７，８，９
の内面には互いに異なる単光色、例えば本実施例
では赤、緑、青の単光色を発するけい光体被膜１
７，１８，１９が被着されている。 Moreover, three stem tubes 20 that support the electrodes 11 are sealed on the stem 5 via lead wires 12, 12, and each light emitting thin tube 7 is attached to the sealed portion between the stem tubes 20 and the stem 5. , 8, 9 are sealed at one end. Due to this sealing, the light emitting capillary 7,
8 and 9 are fixed on the stem 5 with the curved part 10 facing the spherical part 4 and the other end opening 16 facing the stem 5 side. An electrode 11 is located at one end. Therefore, the inside of the luminescent tubes 7, 8, 9 has a side surface approximately U.
Character-shaped discharge paths 13, 14, 15 are formed, and these discharge paths 13, 14, 15 are connected to a discharge space 6 through the other end opening 16 of each luminous thin tube 7, 8, 9.
communicated within. In addition, the light emitting tubes 7, 8, 9
On the inner surface thereof, there is a phosphor coating 1 that emits different monochromatic colors, for example, red, green, and blue monochromatic colors in this embodiment.
7, 18, and 19 are attached.
一方、発光細管７，８，９の他端開口部１６と
対向されるステム５上には、各発光細管７，８，
９の放電路１３，１４，１５に対して共通の１個
の共用電極２１がリード線２３，２３を介して封
着されている。また、上記放電空間６内にはステ
ム５から導出された排気管２２を通じて所定量の
水銀およびアルゴン等の希ガスを主成分としたガ
スが封入されており、この封入後において排気管
２２は溶断封止される。なお、このような構成の
光源２…は外管３の球面部４を被表示側に向けた
姿勢で上記スクリーンボード１上に密に並置され
ている。 On the other hand, on the stem 5 facing the other end opening 16 of the luminescent tubes 7, 8, 9, each luminescent tube 7, 8,
One common electrode 21 common to the nine discharge paths 13, 14, 15 is sealed via lead wires 23, 23. Further, a predetermined amount of gas mainly composed of mercury and a rare gas such as argon is sealed in the discharge space 6 through an exhaust pipe 22 led out from the stem 5, and after this filling, the exhaust pipe 22 is fused. sealed. The light sources 2 having such a configuration are closely arranged on the screen board 1 with the spherical portion 4 of the outer tube 3 facing the display side.
しかして、各発光細管７，８，９の電極１１お
よび共用電極２１は安定器等の点灯装置を介して
電源に接続されており、夫々の発光細管７，８，
９内での放電は、その一端に封着した電極１１と
共用電極２１との間で行なわれる。なお、本実施
例における放電は光流によつてなされているが、
勿論直流放電であつても良い。そして、上記点灯
装置をマイクロコンピユータ等の画像制御部で制
御することにより、画像信号に応じて発光すべき
表示素子２…の数および位置が変化し、種々な画
像がスクリーンボード１上に表示されるようにな
つている。また、各電極１１と点灯装置とを結ぶ
回路には図示しないスイツチが設けられており、
このスイツチを選択的に開閉することにより、発
光する発光細管７，８，９が変化し、種々な発光
色が得られるようになつている。 The electrode 11 and common electrode 21 of each light emitting tube 7, 8, 9 are connected to a power source via a lighting device such as a ballast.
Discharge within the electrode 9 occurs between the electrode 11 and the common electrode 21 sealed at one end thereof. Note that although the discharge in this example is performed by a light flow,
Of course, direct current discharge may also be used. By controlling the lighting device with an image control unit such as a microcomputer, the number and position of the display elements 2 to emit light are changed according to the image signal, and various images are displayed on the screen board 1. It is becoming more and more like this. In addition, a switch (not shown) is provided in the circuit connecting each electrode 11 and the lighting device.
By selectively opening and closing this switch, the light emitting tubes 7, 8, and 9 that emit light change, and various colors of emitted light can be obtained.
このような構成によれば、各発光細管７，８，
９の電極１１と共用電極１２との間に夫々放電が
生じると、発光細管７，８，９の放電路１３，１
４，１５を通過する陽光柱から紫外線が放出さ
れ、この紫外線は発光細管７，８，９内面のけい
光体被膜１７，１８，１９に入射してけい光体を
励起し、各発光細管７，８，９からは相異なる光
色の可視光線が放射される。そして、この可視光
線は図示しない拡散膜により拡散されるととも
に、各色が合成されて外方に放射される。 According to such a configuration, each of the light emitting tubes 7, 8,
When discharge occurs between the electrodes 11 and the common electrode 12 of the light emitting tubes 7, 8, 9, the discharge paths 13, 1 of the light emitting tubes 7, 8, 9
Ultraviolet light is emitted from the positive column passing through the light emitting tubes 7, 8, 9, and the ultraviolet light enters the phosphor coatings 17, 18, 19 on the inner surfaces of the light emitting tubes 7, 8, 9 to excite the phosphors. , 8 and 9 emit visible light of different colors. The visible light rays are then diffused by a diffusion film (not shown), and the respective colors are combined and radiated outward.
このように上記構成の光源２…は、外管３内に
３本の発光細管７，８，９を収容してあるので、
発光細管７，８，９を選択して発光させれば、単
一の光源２…でありながら発光色を自由に変える
ことができる。したがつて、従来の赤、青、緑の
単色発光の光源を３個組みあわせる場合に比べる
と、光源の使用を1/3に低減でき、全体としてコ
ンパククト化できる。 In this way, the light source 2 with the above configuration has three light emitting tubes 7, 8, and 9 housed in the outer tube 3, so that
By selectively emitting light from the light emitting tubes 7, 8, and 9, the color of the emitted light can be freely changed even though the light source 2 is a single light source. Therefore, compared to the conventional combination of three red, blue, and green monochromatic light sources, the use of light sources can be reduced to one-third, and the overall size can be made more compact.
また、光源２の電極１１の数やリード線１２，
１２の数も、共用電極２１を使用することによ
り、減らすことができる。 Also, the number of electrodes 11 of the light source 2, lead wires 12,
The number of 12 can also be reduced by using a shared electrode 21.
さらに本実施例にあつては、従来自由な色を出
すために赤、青、緑の単色発光管を組みあわせて
いたため、人がそれらの単色が混ざつて見えるた
めには、かなり遠くからながめる必要があつた
が、本実施例では１つの光源２内で混色現象がお
こつているので、スクリーンの画質が著しく向上
する。 Furthermore, in the case of this embodiment, monochromatic light emitting tubes of red, blue, and green were conventionally combined to produce a free color, so in order for a person to see a mixture of these monochromatic colors, it would take a person to look at the tube from a considerable distance. Although it was necessary, in this embodiment, since the color mixing phenomenon occurs within one light source 2, the image quality of the screen is significantly improved.
なお、上述した実施例では発光細管の形状を略
Ｕ字形としたが、例えば直管形等であつても良い
とともに、その本数も３本に特定されない。 In the above-described embodiment, the shape of the light-emitting capillary tube is approximately U-shaped, but it may be a straight tube shape, for example, and the number of light-emitting tubes is not limited to three.
また、上記実施例では表示スクリーンに用いる
表示用の光源として説明しているが、本発明はこ
れに限らず、例えば単管で青、緑、赤の３色を発
光させる演出表示用の光源として使用することも
できる。 Furthermore, although the above embodiment has been described as a display light source used for a display screen, the present invention is not limited to this, but can be used as a light source for performance display that emits three colors of blue, green, and red using a single tube, for example. You can also use
以上詳述した本発明によれば、透光性の外管内
に形成された放電空間に、一端に電極を有しかつ
他端が開口された複数本の発光細管を収容し、こ
れら発光細管の内面には互いに異なる光色の光を
発するけい光体被膜を被着し、かつ上記放電空間
内には水銀および封入ガスを封入するとともに、
各発光細管の放電路に対して共通の単一の共用電
極を設けたので、発光細管を選択的に発光させれ
ば、単管でありながら種々なカラー発光が得られ
る。したがつて、光源の使用数を低減できるとと
もに、電極やリード線の数を減らすことができ
る。
According to the present invention described in detail above, a plurality of light emitting tubes each having an electrode at one end and an open end at the other end are housed in a discharge space formed within a light-transmitting outer tube, and The inner surface is coated with a phosphor coating that emits light of different colors, and the discharge space is filled with mercury and a filler gas,
Since a single common electrode is provided for the discharge path of each light-emitting tube, by selectively causing the light-emitting tubes to emit light, it is possible to obtain light emission in various colors even though it is a single tube. Therefore, the number of light sources used can be reduced, as well as the number of electrodes and lead wires.
図面は本発明の一実施例を示し、第１図は表示
スクリーンの概略構成図、第２図は第１図中部
の拡大図、第３図は光源の分解斜視図、第４図は
光源の断面図、第５図は第４図中−線に沿う
断面図である。
３……外管、６……放電空間、７，８，９……
発光細管、１１……電極、１３，１４，１５……
放電路、１７，１８，１９……けい光体被膜、２
１……共用電極。
The drawings show an embodiment of the present invention, in which Fig. 1 is a schematic diagram of the display screen, Fig. 2 is an enlarged view of the middle part of Fig. 1, Fig. 3 is an exploded perspective view of the light source, and Fig. 4 is an exploded perspective view of the light source. 5 is a sectional view taken along the line -- in FIG. 4. 3... Outer tube, 6... Discharge space, 7, 8, 9...
Luminous tube, 11... Electrode, 13, 14, 15...
Discharge path, 17, 18, 19... phosphor coating, 2
1... Common electrode.
Claims (1)
れた放電空間を形成し、この放電空間内に、一端
に電極を有しかつ他端が開口された複数本の発光
細管を収容し、これら発光細管の内面には互いに
異なる色の光を発するけい光体被膜を被着し、か
つ上記放電空間内には水銀および希ガスを封入す
るとともに、各発光細管の放電路に対して共通の
単一の共用電極を設けたことを特徴とする低圧水
銀蒸気放電灯。1 A discharge space that is airtightly partitioned and independent from the outside is formed in a translucent outer bulb, and a plurality of light-emitting thin tubes each having an electrode at one end and open at the other end are housed within this discharge space. The inner surfaces of these light-emitting tubes are coated with phosphor coatings that emit light of different colors, and the discharge space is filled with mercury and a rare gas. A low-pressure mercury vapor discharge lamp characterized by having a common single common electrode.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2722283A JPS59154739A (en) | 1983-02-21 | 1983-02-21 | Low pressure mercury vapor discharge lamp for indicator element |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2722283A JPS59154739A (en) | 1983-02-21 | 1983-02-21 | Low pressure mercury vapor discharge lamp for indicator element |
Related Child Applications (3)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP3030090A Division JPH02244550A (en) | 1990-02-09 | 1990-02-09 | Low pressure mercury vapor discharge lamp |
| JP3029990A Division JPH02244553A (en) | 1990-02-09 | 1990-02-09 | Low pressure mercury vapor discharge lamp |
| JP3030190A Division JPH0329261A (en) | 1990-02-09 | 1990-02-09 | Low pressure mercury vapor discharge lamp |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS59154739A JPS59154739A (en) | 1984-09-03 |
| JPS6367315B2 true JPS6367315B2 (en) | 1988-12-23 |
Family
ID=12215066
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2722283A Granted JPS59154739A (en) | 1983-02-21 | 1983-02-21 | Low pressure mercury vapor discharge lamp for indicator element |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS59154739A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1992002035A1 (en) * | 1990-07-18 | 1992-02-06 | Toto Ltd. | Variable color lamp |
Families Citing this family (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6023947A (en) * | 1983-07-18 | 1985-02-06 | Matsushita Electric Works Ltd | Color discharge lamp and its control |
| JPS6193970U (en) * | 1984-11-24 | 1986-06-17 | ||
| JPS61133551A (en) * | 1984-12-03 | 1986-06-20 | Matsushita Electric Works Ltd | Fluorescent lamp |
| JPS61147449A (en) * | 1984-12-18 | 1986-07-05 | Matsushita Electric Works Ltd | Variable color fluorescent lamp |
| JPS60140358U (en) * | 1984-12-24 | 1985-09-17 | 松下電工株式会社 | fluorescent lamp |
| JPS61163533A (en) * | 1985-01-14 | 1986-07-24 | Matsushita Electric Works Ltd | Manufacture of variable color fluorescent lamp |
| JPH0517800Y2 (en) * | 1985-08-24 | 1993-05-12 | ||
| JPH0329261A (en) * | 1990-02-09 | 1991-02-07 | Toshiba Lighting & Technol Corp | Low pressure mercury vapor discharge lamp |
| JPH02244550A (en) * | 1990-02-09 | 1990-09-28 | Toshiba Lighting & Technol Corp | Low pressure mercury vapor discharge lamp |
| JPH02244553A (en) * | 1990-02-09 | 1990-09-28 | Toshiba Lighting & Technol Corp | Low pressure mercury vapor discharge lamp |
| JP4263780B2 (en) | 1996-12-26 | 2009-05-13 | 株式会社日本触媒 | Inorganic dispersion stabilizer and process for producing resin particles using the same |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2561868A (en) * | 1946-12-20 | 1951-07-24 | Gen Electric | Gaseous electric discharge lamp |
| JPS5444370A (en) * | 1977-08-23 | 1979-04-07 | Philips Nv | Low pressure mercury vapor discharge lamp |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS56105254U (en) * | 1980-01-14 | 1981-08-17 | ||
| JPS56137362U (en) * | 1980-03-19 | 1981-10-17 |
-
1983
- 1983-02-21 JP JP2722283A patent/JPS59154739A/en active Granted
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2561868A (en) * | 1946-12-20 | 1951-07-24 | Gen Electric | Gaseous electric discharge lamp |
| JPS5444370A (en) * | 1977-08-23 | 1979-04-07 | Philips Nv | Low pressure mercury vapor discharge lamp |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1992002035A1 (en) * | 1990-07-18 | 1992-02-06 | Toto Ltd. | Variable color lamp |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS59154739A (en) | 1984-09-03 |
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