JPS6191853A - Display device - Google Patents
Display deviceInfo
- Publication number
- JPS6191853A JPS6191853A JP21230784A JP21230784A JPS6191853A JP S6191853 A JPS6191853 A JP S6191853A JP 21230784 A JP21230784 A JP 21230784A JP 21230784 A JP21230784 A JP 21230784A JP S6191853 A JPS6191853 A JP S6191853A
- Authority
- JP
- Japan
- Prior art keywords
- conductors
- discharge lamp
- tube axis
- electromagnetic field
- metal vapor
- 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
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- H01J65/00—Lamps without any electrode inside the vessel; Lamps with at least one main electrode outside the vessel
- H01J65/04—Lamps in which a gas filling is excited to luminesce by an external electromagnetic field or by external corpuscular radiation, e.g. for indicating plasma display panels
- H01J65/042—Lamps in which a gas filling is excited to luminesce by an external electromagnetic field or by external corpuscular radiation, e.g. for indicating plasma display panels by an external electromagnetic field
- H01J65/046—Lamps in which a gas filling is excited to luminesce by an external electromagnetic field or by external corpuscular radiation, e.g. for indicating plasma display panels by an external electromagnetic field the field being produced by using capacitive means around the vessel
Landscapes
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Engineering & Computer Science (AREA)
- Plasma & Fusion (AREA)
- Discharge Lamps And Accessories Thereof (AREA)
- Audible And Visible Signals (AREA)
- Devices For Indicating Variable Information By Combining Individual Elements (AREA)
Abstract
Description
【発明の詳細な説明】
（技術分野）
本発明は、発光面積を自由に変えることができる放電灯
を用いた表示装置に関する。DETAILED DESCRIPTION OF THE INVENTION (Technical Field) The present invention relates to a display device using a discharge lamp whose light emitting area can be freely changed.
（背景技術）
近年の情報化社会の多様化するニーズに応え、ディスプ
レイの研究開発が各所で進められている。そのディスプ
レイにも、数字・文字表示、グラフインク表示、画像表
示等いろいろな種類があり、また、それらを実現する手
段も、ディスプレイ・デバイスの目覚しい進歩を背景に
多種多様である。例えば、発光面積を可変にすることに
より、ある量を表示する表示器（インディケータ）も一
種のグラフィックディスプレイといえる。(Background Art) In response to the diversifying needs of the recent information society, research and development of displays is progressing in various places. There are various types of displays such as numeric/character displays, graph ink displays, and image displays, and the means for realizing these displays are also diverse due to the remarkable progress of display devices. For example, an indicator that displays a certain amount by making the light emitting area variable can also be considered a type of graphic display.
而して、放電灯を用いた最も基本的な表示器としては、
第１図に示すように、ある放電灯１の前面に、可視光を
透過させない光遮蔽板２を設け、その光遮蔽板２を放電
灯１に沿って移動させることにより、放電灯１の前面か
らの可視面積を変化させ、表示効果を持たせたものがあ
る。また、かかる表示器において、第２図に示すように
、放電灯１の両端に光遮蔽板２を設けることにより、放
電灯ｌの管長以内の長さを自由に制御できる。しかしな
がら、かかる表示器においては、放電灯１の発光状態は
、表示器“とじての指示量によらず一定、すなわち消費
電力は一定であり、非常に不経済である。Therefore, the most basic indicator using a discharge lamp is
As shown in FIG. 1, a light shielding plate 2 that does not transmit visible light is provided on the front surface of a certain discharge lamp 1, and by moving the light shielding plate 2 along the discharge lamp 1, the front surface of the discharge lamp 1 is There are some that have a display effect by changing the visible area from the outside. Furthermore, in such an indicator, as shown in FIG. 2, by providing light shielding plates 2 at both ends of the discharge lamp 1, the length within the tube length of the discharge lamp 1 can be freely controlled. However, in such an indicator, the light emitting state of the discharge lamp 1 is constant regardless of the amount indicated by the indicator, that is, the power consumption is constant, which is very uneconomical.
それに対し、第３図に示すように、放電灯１に多数の電
極３を設け、その任意の２点の電極間で放電を行わせる
ことにより、可視面積を変化させ表示器とすることも可
能である。この場合、回路側の制御により可視面積を変
化させるので、消費電力もそれに応じて変化すると共に
、均一輝度が得られるという利点があるが、回路構成が
複雑になる上、電極数が限定されるので、可視面積を連
続的に変化させることが困難であるといった欠点を有す
る。On the other hand, as shown in Fig. 3, by providing a discharge lamp 1 with a large number of electrodes 3 and causing discharge to occur between any two electrodes, it is possible to change the visible area and use it as an indicator. It is. In this case, since the visible area is changed by control on the circuit side, the power consumption also changes accordingly, and there is an advantage that uniform brightness can be obtained, but the circuit configuration becomes complicated and the number of electrodes is limited. Therefore, it has the disadvantage that it is difficult to continuously change the visible area.
（発明の目的）
本発明は上記欠点に鑑みてなされたもので、その目的と
するところは、放電灯を用いた表示装置において、可視
面積を連続的に変化させる得ると共に、可視面積に応じ
て消費電力も変化させ得る表示装置を提供するにある。(Object of the Invention) The present invention has been made in view of the above-mentioned drawbacks, and an object of the present invention is to continuously change the visible area in a display device using a discharge lamp, and to change the visible area according to the visible area. An object of the present invention is to provide a display device whose power consumption can also be changed.
（発明の開示）
第４図は本発明の一実施例を示すもので、無電極放電灯
５の外周には、一対の導体６ａ、６ｂが管軸方向に摺動
自在に装着され、両溝体６ａ、６ｂは導線７を介して無
線周波発振器８に接続され、該発振器８は電源９に接続
されている。無電極放電灯５の構成は周知のように、管
内壁面に螢光体１０が塗布され、管内には水銀等の金属
蒸気及びアルゴン等の不活性ガスが封入されている。(Disclosure of the Invention) FIG. 4 shows an embodiment of the present invention, in which a pair of conductors 6a and 6b are attached to the outer periphery of the electrodeless discharge lamp 5 so as to be slidable in the tube axis direction. The bodies 6a, 6b are connected via conductors 7 to a radio frequency oscillator 8, which is connected to a power source 9. As is well known, the structure of the electrodeless discharge lamp 5 is such that a phosphor 10 is coated on the inner wall of the tube, and a metal vapor such as mercury and an inert gas such as argon are sealed inside the tube.
而して、電源９を投入すると無線周波発振器８が作動し
、高周波電磁界が内導体６ａ、６ｂ間に発生する。それ
により、無電極放電灯５内の金属蒸気が電離し、放出さ
れた紫外線が螢光体１ｏを励起させ、放電灯５から可視
光が発生する。ここで、高周波電磁界は内導体６ａ、６
ｂ間に集中するため、各導体６ａ、６ｂからそれぞれの
管端部にかけては、殆ど金属蒸気は励起されず発光しな
“ い。従って、各導体６ａ、６ｂを管軸方向に摺動す
ることにより、発光面積を自在に変化させることができ
る。また、内導体６ａ、６ｂ間の距離を短くすれば、一
定電力を供給しても電磁界強度は高まり発光輝度が高く
なる。言い換えれば、一定輝度にしようとすれば、内導
体６ａ、６ｂ間の距離が短かければ、供給電力は少なく
てよく効率が良い。When the power source 9 is turned on, the radio frequency oscillator 8 is activated and a high frequency electromagnetic field is generated between the inner conductors 6a and 6b. As a result, the metal vapor within the electrodeless discharge lamp 5 is ionized, and the emitted ultraviolet light excites the phosphor 1o, causing the discharge lamp 5 to emit visible light. Here, the high frequency electromagnetic field is transmitted through the inner conductors 6a, 6
Since the metal vapor is concentrated between the conductors 6a and 6b and the ends of the tubes, almost no metal vapor is excited and does not emit light. Therefore, the light emitting area can be freely changed.Also, if the distance between the inner conductors 6a and 6b is shortened, the electromagnetic field strength will increase even if a constant power is supplied, and the light emitting brightness will increase.In other words, the light emitting brightness will be high. In order to achieve brightness, the shorter the distance between the inner conductors 6a and 6b, the less power is required and the efficiency is high.
（発明の効果）
本発明は上記のように、無電極放電灯の外周に一対の導
体を管軸方向に沿って摺動自在に装着すると共に、該内
導体間に高周波電磁界を印加せしめたことにより、無電
極放電灯から発光する可視光面積は、内導体間の距離に
よって連続的に変化し、しかも、可視面積に応じて消費
電力も変化する表示装置を提供できる。(Effects of the Invention) As described above, the present invention has a pair of conductors attached to the outer periphery of an electrodeless discharge lamp so as to be slidable along the tube axis direction, and a high frequency electromagnetic field is applied between the inner conductors. Thereby, it is possible to provide a display device in which the area of visible light emitted from the electrodeless discharge lamp changes continuously depending on the distance between the inner conductors, and the power consumption also changes according to the visible area.
第１図乃至第３図はそれぞれ従来例を説明する簡略図、
第４図は本発明の一実施例を説明する簡略図である。
５・・・無電極放電灯、６ａ、６ｂ・・・導体、８・・
・無線周波発振器、１０・・・螢光体。FIGS. 1 to 3 are simplified diagrams illustrating conventional examples, respectively;
FIG. 4 is a simplified diagram illustrating one embodiment of the present invention. 5... Electrodeless discharge lamp, 6a, 6b... Conductor, 8...
- Radio frequency oscillator, 10...fluorescent material.
Claims (1)
って摺動自在に装着すると共に、該両導体間に高周波電
磁界を印加せしめたことを特徴とする表示装置。(1) A display device characterized in that a pair of conductors is slidably attached to the outer periphery of an electrodeless discharge lamp along the tube axis direction, and a high-frequency electromagnetic field is applied between the two conductors.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP21230784A JPS6191853A (en) | 1984-10-09 | 1984-10-09 | Display device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP21230784A JPS6191853A (en) | 1984-10-09 | 1984-10-09 | Display device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS6191853A true JPS6191853A (en) | 1986-05-09 |
Family
ID=16620393
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP21230784A Pending JPS6191853A (en) | 1984-10-09 | 1984-10-09 | Display device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6191853A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2003081636A1 (en) * | 2002-03-22 | 2003-10-02 | Samsung Electronics Co., Ltd. | Lamp, method of fabricating the same and liquid crystal display apparatus having the same |
-
1984
- 1984-10-09 JP JP21230784A patent/JPS6191853A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2003081636A1 (en) * | 2002-03-22 | 2003-10-02 | Samsung Electronics Co., Ltd. | Lamp, method of fabricating the same and liquid crystal display apparatus having the same |
| US7474056B2 (en) | 2002-03-22 | 2009-01-06 | Samsung Electronics Co., Ltd. | Lamp, method of fabricating the same and liquid crystal display apparatus having the same |
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