JPS59143202A - Plane light source - Google Patents
Plane light sourceInfo
- Publication number
- JPS59143202A JPS59143202A JP58016535A JP1653583A JPS59143202A JP S59143202 A JPS59143202 A JP S59143202A JP 58016535 A JP58016535 A JP 58016535A JP 1653583 A JP1653583 A JP 1653583A JP S59143202 A JPS59143202 A JP S59143202A
- Authority
- JP
- Japan
- Prior art keywords
- light source
- fluorescent tube
- flat
- light
- flat light
- 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
Landscapes
- Planar Illumination Modules (AREA)
- Light Guides In General And Applications Therefor (AREA)
- Optical Integrated Circuits (AREA)
Abstract
(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.
Description
【発明の詳細な説明】 本発明は、薄型の平面光源に関する。[Detailed description of the invention] The present invention relates to a thin flat light source.
さらに詳しくは、螢光放電管の放射束を集光する系と導
光系から成る平面光源に関する。More specifically, the present invention relates to a flat light source comprising a system for condensing the radiant flux of a fluorescent discharge tube and a light guide system.
白熱電灯各種放電管を光源とした平（２）光源は、第１
図に示すように、反射板■、拡散板■金用いた系で構成
され、均質輝度を得るためには、拡散板を光源■から距
離を置く必要があり、このために占有する空間が大きく
、省スペースを要求される表示装置の光源や広告看板等
には不満足な光源であった。The flat (2) light source, which uses various discharge tubes as incandescent lamps, is the first
As shown in the figure, the system consists of a reflector plate (■) and a diffuser plate (■) using gold. In order to obtain uniform brightness, it is necessary to place the diffuser plate at a distance from the light source (■), which occupies a large amount of space. However, this light source is unsatisfactory for use in display devices that require space saving, advertising signboards, and the like.
また、省スペースな平面光源としては、ＥＬ（エレクト
ロルミネセンス）９発光ダイオード。In addition, as a space-saving flat light source, we use an EL (electroluminescence) 9 light emitting diode.
平型螢光管等が実用に供されているが、発光色が限定さ
れる。均質な平面輝度が得られない２発光効率が低いな
どの問題を持っている。Although flat fluorescent tubes and the like are in practical use, the colors of the emitted light are limited. There are problems such as the inability to obtain uniform planar brightness and low luminous efficiency.
本発明は、このような従来の半面光源の欠点に鑑み考案
されたもので、発光効率が高く白色光が得られる螢光管
の光束を集め、平型の導光系に導くことによって、高輝
度、均質、省スペースな平面光源を提供することを目的
とする。The present invention was devised in view of the shortcomings of the conventional half-surface light source, and it collects the luminous flux of a fluorescent tube, which has high luminous efficiency and produces white light, and guides it to a flat light guide system, thereby achieving a high-efficiency light source. The purpose is to provide a flat light source with high brightness, uniformity, and space saving.
以下、実施例を参照しながら本発明を詳説する。Hereinafter, the present invention will be explained in detail with reference to Examples.
実施例１゜
第２図は、螢光管として、アパーチャー型螢光管を使用
した場合の見取図である。アパーチャー型螢光管■は、
第５図（ａ）の断面図に示すようにガラス、す（匂に反
射膜■、螢光体層卸を塗付Ｌ１ アパーチャ一部■には
何も塗付しないｌｉｔ造、もしくは類似の（構造を有し
ている。したがってアパーチャ一部■は通常の渣范管の
数倍の光束発散度を得ている。言い換えると、螢光管の
光束を集め、アパーチャ一部から放射していることに他
ならない。Embodiment 1 FIG. 2 is a sketch of the case where an aperture type fluorescent tube is used as the fluorescent tube. Aperture type fluorescent tube ■
As shown in the cross-sectional view of Fig. 5(a), the glass is coated with a reflective film (2) and a phosphor layer. Therefore, a part of the aperture has a luminous flux divergence several times that of a normal tube.In other words, the luminous flux of the fluorescent tube is collected and radiated from a part of the aperture. Nothing but.
このように−１１Ｌ光ζｉ’Ｌｆ−Ｃ光束は、くさび状
の導光系■に導びかれる。導光系（りの入射端面ばアパ
ーチャ一部に近接して設置され、光束全無駄なく導ける
構、直になっている。この例では、そのために１秀明（
ＧＪ Ｊ信ゆで密着させ−Ｃいる。また導光系は、７色
吸収が少ない屈折率が空気より大きい屈折率を持つ透明
材料ならば使用できるが、ここでは透明性と加工に［か
ら透明無色のアクリル樹脂（［−使用した。In this way, the -11L light ζi'Lf-C luminous flux is guided to the wedge-shaped light guide system (2). The incident end surface of the light guide system is installed close to a part of the aperture, so that it can guide all the light flux without wasting it.In this example, one Hideaki (
GJ J Faith-C close contact. The light guiding system can be made of any transparent material that absorbs less of the seven colors and has a refractive index higher than that of air, but here we used a transparent colorless acrylic resin ([-] for transparency and processing.
アクリル樹脂（導光系）は、第２図、第６圀のように、
くさび形に成形され、さらに反射面■を第６図（ｂ）に
示す鋸状断面や、同じく（Ｃ）に示す散乱面に加工され
る。これは入射、光束０が導光系の平面部０から垂直な
方向に多く放射されるようにするためである。アクリル
樹脂（導光系）の反射面■は、さらに反射性膜０（金属
の蒸着膜、白色顔料皮膜等）を被覆され、光束の損失を
防［ヒした構造になっている。同様な被覆は、平面部ｑ
Φ以外の導光系壁に設置してもよい。また、導光系は、
平面部以外からの光束のもれを防ぐために、反射面以外
の平面は平坦に仕上げることが肝要でちる。The acrylic resin (light guide system) is as shown in Figure 2, Section 6.
It is formed into a wedge shape, and the reflective surface (2) is further processed into a saw-shaped cross section as shown in FIG. 6(b) and a scattering surface as shown in FIG. 6(C). This is to ensure that a large amount of the incident light flux 0 is radiated from the flat part 0 of the light guide system in the perpendicular direction. The reflective surface (2) of the acrylic resin (light guiding system) is further coated with a reflective film 0 (deposited metal film, white pigment film, etc.) to prevent loss of luminous flux. A similar coating is applied to the flat part q
The light guide system may be installed on a wall other than Φ. In addition, the light guide system is
In order to prevent light flux from leaking from areas other than the flat surface, it is important to finish the flat surfaces other than the reflective surface flat.
４Ｗの小型アパーチャー型螢光管、アクリ／Ｌ、導光系
を用いた有効面積４Ｊ７）ｌの平面部・◎において、平
面部の輝度が２０００ ｃｄ／ｍ’以上金得た。これは
従来の反射板＋拡散叛に匹敵する値である。Using a 4W small aperture type fluorescent tube, Acrylic/L, and a light guide system, a flat area with an effective area of 4J7) ◎ achieved a brightness of 2000 cd/m' or more. This value is comparable to the conventional reflector + diffuser.
実施例２゜
実施％Ｊ ２は、螢光管として反射型螢光管全１史用し
、実施例１と同じ導光系により平面光源？得たものであ
る。そこで簡単に、実施レリ２で用いｔ反射型螢光管の
説明を加える。Example 2゜Implementation% J2 uses a reflection type fluorescent tube as the fluorescent tube, and uses the same light guide system as Example 1 to create a flat light source. That's what I got. Therefore, a brief explanation of the t-reflection type fluorescent tube used in Example 2 will be added.
ＦＡ４図ｔよ実施例２の断面図である。反射型螢光管［
相］に、ガラス壁■に一部を除いて反射膜■が塗付、焼
成され、次に螢光体層０が全管内に塗付。FIG. FA4 is a sectional view of Example 2. Reflection type fluorescent tube [
Phase], a reflective film (2) is applied to the glass wall (2) except for a portion and fired, and then a phosphor layer (0) is applied to the entire tube.
焼成さオしている。反射型螢光管について詳しくは特許
公報昭４９−４５５１０．昭５０−８８６１を参照さノ
ｔｋい。It is fired. For more information on reflective fluorescent tubes, see Patent Publication No. 49-45510. Please refer to 1986-8861.
この反射型螢光管を用いた系では、可視光ではなく、紫
外線を有効に発光部［相］に集める点が、実施例１と異
なっている。この実施例２の場合も、実１布例１と同程
度の平面部の輝度に得ている。This system using a reflection type fluorescent tube differs from Example 1 in that it effectively collects ultraviolet light, rather than visible light, into the light emitting part (phase). In the case of this Example 2 as well, the brightness of the flat part was obtained to be comparable to that of Fabric Example 1.
実施例６゜
実砲例５は、螢光管とじて特殊な発光部金持たない一般
型を用いた鳴合である。Example 6 Actual gun Example 5 is a firing using a general type without a special light-emitting part other than a fluorescent tube.
第５図の断面・図に示すように、螢光管Ｏは反射板＠に
よつ−Ｃ周囲を取り囲まれ、導光系に近接する一部の反
射板が開口している。螢光管Ｏから出た光束は、反射板
０により開口部ＣＤに集光される。As shown in the cross-sectional view of FIG. 5, the fluorescent tube O is surrounded by a reflection plate @, and a part of the reflection plate near the light guide system is open. The light flux emitted from the fluorescent tube O is focused on the opening CD by the reflecting plate 0.
し力・しこの時、反射鈑０からの反射光の一部１は再び
螢光管に戻り吸収される。このため実施例１のアパーチ
ャー形螢光管や、実施例２の反射型螢光管に比べ効率の
低下が見られる。しかるに開口部０の光束発散度は明ら
かに大きくなる。こうして導光系に集ぬられた光束は、
実施例１と同じく発散し、平面光源となる。When the force is applied, a portion 1 of the reflected light from the reflecting plate 0 returns to the fluorescent tube and is absorbed. Therefore, the efficiency is lower than that of the aperture type fluorescent tube of Example 1 and the reflection type fluorescent tube of Example 2. However, the luminous flux divergence of the aperture 0 becomes clearly large. The light flux concentrated in the light guide system in this way is
As in Example 1, it diverges and becomes a flat light source.
実施例４゜
実施例１〜５は、直管タイプの螢光管であったが、本発
明は螢光管の形状について（１自由に対応できる。その
−例として、実姉例４ｉｄＵ字型の螢光管の場合である
。一般に、螢光管はある程度管長が長くないと効率が低
下する。したがって、Ｕ字型管（は効率の点からも、直
管に比べ有利である。Example 4 Although Examples 1 to 5 were straight type fluorescent tubes, the present invention can be freely adapted to the shape of the fluorescent tube (1). This is the case with fluorescent tubes.In general, the efficiency of fluorescent tubes decreases unless the length of the tube is long to a certain extent.Therefore, U-shaped tubes are advantageous over straight tubes in terms of efficiency as well.
実施例１〜６で挙げたいずれの集光方式を採用しでも、
Ｕ字管にも適用されるが、ここではアパーチャー型０字
螢光管の例を挙げる、第６図はその見取図、第７図は断
面図である。No matter which light collection method mentioned in Examples 1 to 6 is adopted,
Although the invention is also applied to U-shaped tubes, an example of an aperture-type O-shaped fluorescent tube will be given here. FIG. 6 is a sketch thereof, and FIG. 7 is a sectional view thereof.
アパーチャー型螢光管■は開口部■を有し、開口部■に
合わせて導光系■の入射性向が近接して配ｆｊｔされて
いる。導光系■に透明なアクリル樹脂から成り、中央部
が薄ｈ〈さびが向かいあった形状をしている。反射面等
の処置は、実施例１と一同一様に行なっている。The aperture type fluorescent tube (2) has an opening (2), and the incidence direction of the light guide system (2) is arranged close to the opening (2). The light guide system (■) is made of transparent acrylic resin, and the central part is shaped like a thin H (rust facing each other). The treatment of the reflective surface, etc., was carried out in the same manner as in Example 1.
実施例１〜４は、いずれも導光系からの光を出射する方
向を、平坦な面で説明したが、第８図のように反対側の
面で行なってもよい。この場合は、入射光束げ３を透過
出射面→から外部に取出す構造となる。透過出射面Ｃ優
は、第３図（ｂ） 、 （Ｃ）に示す鋸状断面、散乱面
となっている。捷た、反対の平面や他の端面には、必要
に応じ反射性の被照を施しである。In Examples 1 to 4, the direction in which light is emitted from the light guide system is explained using a flat surface, but it may be emitted from the opposite surface as shown in FIG. In this case, the structure is such that the incident light flux 3 is taken out from the transmission/emission surface →. The transmission/emission surface C has a sawtooth cross section and a scattering surface as shown in FIGS. 3(b) and 3(C). The opposite plane or other end face of the folded part is provided with reflective illumination as required.
以上、実雉例金挙げて本発明を説明した。このように本
発明によると、螢光管を光源とし、導光系を用いること
によって、白色、高発光効率、薄型、均質な輝３’ｓＨ
持つ平面光源が実１児さね、る。The present invention has been explained above using the example of a real pheasant. As described above, according to the present invention, by using a fluorescent tube as a light source and a light guide system, a white, high luminous efficiency, thin, and homogeneous brightness can be obtained.
The plane light source that I have is my first child.
本発明は、省スペースを要求される分野、ポータプルな
表示装祿の背面光源、表示殻器の分野に特に有効である
。The present invention is particularly effective in fields where space saving is required, back light sources for portable display devices, and display shells.
第１図は、反射板、拡散機を用いた従来り）例を示す切
欠き見取図である。
第２図は、本発明によるアパーチャー型螢光管を用いた
場合の見取図である。
第６図は第２図の場合の断面図である。（ａ）は全体の
断面、（ｂ） 、 （ｃ）は反射面の断＋ｋ ｆ示すも
のである。
第４図（仁、反射型螢光管を用いた場合の断面図である
。
第５図は、通常の螢光管と反射板を用い元場合の断面図
である。
第６図は、アパーチャー型Ｕ字螢光管會用い念場合の見
取図である。
第７図は第６図の断面図である。
第８図は、出射ｉｉｉを反対にした導光系の断面図であ
る。
以 上
出願人 株式会社 諏訪精工舎
代理人 弁理士 最上 務
第１図
第２図
第３図
第４図
第６図
第７図
第８図FIG. 1 is a cutaway diagram showing a conventional example using a reflector and a diffuser. FIG. 2 is a sketch of the aperture type fluorescent tube according to the present invention. FIG. 6 is a sectional view of the case shown in FIG. 2. (a) shows the entire cross section, and (b) and (c) show the cross section +kf of the reflective surface. Figure 4 is a sectional view when a reflective type fluorescent tube is used. Figure 5 is a sectional view when a normal fluorescent tube and reflector are used. Figure 6 is a sectional view when a reflection type fluorescent tube is used. This is a sketch of a case in which a U-shaped fluorescent tube is used. Fig. 7 is a cross-sectional view of Fig. 6. Fig. 8 is a cross-sectional view of a light guide system with output iii reversed. Applicant: Suwa Seikosha Co., Ltd. Agent: Patent Attorney: Mr. Mogami Figure 1 Figure 2 Figure 3 Figure 4 Figure 6 Figure 7 Figure 8
Claims (4)
、螢光放電管の放射束を集束し、屈折率が空気より大き
い平型の導光系に導き、導光系は一部の境界面で放射束
を反射、あるいＩｄ４過屈折、あるいに散乱することに
よって外部に取出すことを特徴とする平面光源。(1) In a flat light source that uses a fluorescent discharge tube as a light source, the radiant flux of the fluorescent discharge tube is focused and guided to a flat light guide system with a refractive index higher than that of air, and the light guide system is connected to a part of the boundary surface. A flat light source characterized in that a radiant beam is extracted to the outside by reflection, Id4 hyperrefraction, or scattering.
螢光管を用いることを特徴とする特許請求の範囲第１項
記載の平面光源。(2) The flat light source according to claim 1, wherein an aperture type fluorescent tube is used as a light source constituting the flat light source.
用いることを特徴とする特許請求の範囲第１項記載の平
面光源。(3) The flat light source according to claim 1, characterized in that a reflection type fireproof tube is used as a light source constituting the flat light source.
る反射［１−用いることを特徴とする特許請求の範囲第
１項記載の平面光源。(4) A flat light source according to claim 1, characterized in that a fluorescent tube and surrounding reflection [1-] are used as a light source constituting the flat light source.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP58016535A JPS59143202A (en) | 1983-02-03 | 1983-02-03 | Plane light source |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP58016535A JPS59143202A (en) | 1983-02-03 | 1983-02-03 | Plane light source |
Related Child Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP4238405A Division JPH05264819A (en) | 1992-09-07 | 1992-09-07 | Plane light source |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS59143202A true JPS59143202A (en) | 1984-08-16 |
Family
ID=11918957
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP58016535A Pending JPS59143202A (en) | 1983-02-03 | 1983-02-03 | Plane light source |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS59143202A (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS59210411A (en) * | 1983-05-13 | 1984-11-29 | Seiko Epson Corp | Plane light source |
| JPS62161203U (en) * | 1986-04-01 | 1987-10-14 | ||
| JPS6323110A (en) * | 1986-03-31 | 1988-01-30 | Agency Of Ind Science & Technol | Surface illuminant |
| JPS63139709U (en) * | 1987-03-05 | 1988-09-14 | ||
| JPS63239702A (en) * | 1987-03-27 | 1988-10-05 | 株式会社小糸製作所 | Lens lighting apparatus for decoration |
| JPS63189835U (en) * | 1987-05-28 | 1988-12-06 | ||
| JPH0278980U (en) * | 1988-12-03 | 1990-06-18 |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5135582A (en) * | 1974-09-21 | 1976-03-26 | Murayama Takaharu | MENHATSUKOTAI |
-
1983
- 1983-02-03 JP JP58016535A patent/JPS59143202A/en active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5135582A (en) * | 1974-09-21 | 1976-03-26 | Murayama Takaharu | MENHATSUKOTAI |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS59210411A (en) * | 1983-05-13 | 1984-11-29 | Seiko Epson Corp | Plane light source |
| JPS6323110A (en) * | 1986-03-31 | 1988-01-30 | Agency Of Ind Science & Technol | Surface illuminant |
| JPS62161203U (en) * | 1986-04-01 | 1987-10-14 | ||
| JPS63139709U (en) * | 1987-03-05 | 1988-09-14 | ||
| JPS63239702A (en) * | 1987-03-27 | 1988-10-05 | 株式会社小糸製作所 | Lens lighting apparatus for decoration |
| JPH046043B2 (en) * | 1987-03-27 | 1992-02-04 | Koito Mfg Co Ltd | |
| JPS63189835U (en) * | 1987-05-28 | 1988-12-06 | ||
| JPH0278980U (en) * | 1988-12-03 | 1990-06-18 |
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