JPH06160638A - Illumination device and manufacture thereof - Google Patents
Illumination device and manufacture thereofInfo
- Publication number
- JPH06160638A JPH06160638A JP4313297A JP31329792A JPH06160638A JP H06160638 A JPH06160638 A JP H06160638A JP 4313297 A JP4313297 A JP 4313297A JP 31329792 A JP31329792 A JP 31329792A JP H06160638 A JPH06160638 A JP H06160638A
- Authority
- JP
- Japan
- Prior art keywords
- light
- guide plate
- light guide
- inclined surface
- lighting device
- 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
- Light Guides In General And Applications Therefor (AREA)
- Liquid Crystal (AREA)
Abstract
(57)【要約】
【目的】 ＬＣＤパネルのバック照明用の平面光源など
に使用される照明装置において、軽量、薄形の構造に
し、また光の利用率を高める。
【構成】 導光板２の形状を、二等辺三角形の二等辺を
各々の傾斜面５として凹状断面を有するようにし、この
２分割構成の導光板２の両側端に凸レンズ状の光導入部
４を形成し、細径の蛍光灯１からの光を平行にして導光
板２内に進入させる。また、傾斜面５の外側に光を拡散
反射させる光拡散層６を設け、更にその外側に反射板７
を配置する。そして、傾斜面５から光拡散層６に進入し
て反射した光を導光板２の前面の発光面３を通してＬＣ
Ｄパネル８に供給する。
(57) [Summary] [Object] To make a lighting device used for a flat light source for back lighting of an LCD panel, etc., to have a lightweight and thin structure and to improve the light utilization rate. [Structure] The light guide plate 2 has a concave cross-section with an isosceles triangle having an isosceles triangle as each inclined surface 5, and a convex lens-shaped light introducing portion 4 is provided at both ends of the light guide plate 2 having the two-division structure. The light from the fluorescent lamp 1 having a small diameter is formed in parallel and enters the light guide plate 2. Further, a light diffusing layer 6 for diffusing and reflecting light is provided on the outer side of the inclined surface 5, and a reflecting plate 7 is further provided on the outer side thereof.
To place. Then, the light that has entered the light diffusion layer 6 from the inclined surface 5 and is reflected by the light emitting surface 3 on the front surface of the light guide plate 2 is LC
Supply to the D panel 8.
Description
【０００１】[0001]
【産業上の利用分野】この発明は、例えばＬＣＤパネル
のバック照明用平面光源として使用される照明装置、特
に蛍光灯などの細径の線状光源及び導光板を用いた照明
装置及びその製造方法に関するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a lighting device used as a flat light source for back lighting of an LCD panel, for example, a lighting device using a linear light source having a small diameter such as a fluorescent lamp and a light guide plate, and a method for manufacturing the same. It is about.
【０００２】[0002]
【従来の技術】図１１は一般的なエッジライト方式のＬ
ＣＤバック照明装置の概要を示す構成図であり、（ａ）
は平面図、（ｂ）は側面断面図となっている。同図にお
いて、１１は光源として設けられた細径の蛍光灯で、平
板状に形成された導光板１２の両端側に配置されてい
る。１３は導光板１２の裏側、つまり発光面１４と反対
側に設けられた光拡散用のインクで、導光板１２と光屈
折率が近似し、光を反射する微粒子が混入されている。
１５はこのインク１３の外側に配置された反射板であ
る。2. Description of the Related Art FIG. 11 shows a general edge light type L.
It is a block diagram which shows the outline of a CD back lighting device, (a)
Is a plan view, and (b) is a side sectional view. In the figure, reference numeral 11 denotes a small-diameter fluorescent lamp provided as a light source, which is arranged at both ends of a light guide plate 12 formed in a flat plate shape. Reference numeral 13 denotes a light diffusing ink provided on the back side of the light guide plate 12, that is, on the side opposite to the light emitting surface 14, and has a light refraction index similar to that of the light guide plate 12 and contains fine particles that reflect light.
Reference numeral 15 is a reflection plate arranged outside the ink 13.
【０００３】上記導光板１２の裏側に設けられた光拡散
用のインク１３は、導光板１２の一方の側端部から他方
の側端部まで縞状に設けられており、発光面１４からの
光の放出を均一にするために、光源に近い両端側は粗、
光源から遠い中央側は密に設けられている。そして、光
源である蛍光灯１１の光は導光板１２の両端面から進入
し、図の矢印の如くインク１３に入り、このインク１３
内の微粒子で反射して導光板１２の発光面から出てい
く。これにより、ＬＣＤバック照明用の平面光源が得ら
れる。The light diffusing ink 13 provided on the back side of the light guide plate 12 is provided in a striped pattern from one side end of the light guide plate 12 to the other side end thereof. In order to make the light emission uniform, both ends near the light source are rough,
The central side far from the light source is densely provided. Then, the light of the fluorescent lamp 11 as the light source enters from both end surfaces of the light guide plate 12 and enters the ink 13 as shown by the arrow in the figure.
The light is reflected by the fine particles inside and goes out from the light emitting surface of the light guide plate 12. This provides a flat light source for LCD back lighting.
【０００４】[0004]
【発明が解決しようとする課題】しかしながら、上記の
ような従来の照明装置にあっては、光拡散用のインクが
導光板の全面には存在しないので、光の利用率が低く、
また、導光板の断面は矩形であり、重量物となってしま
うという問題点があった。However, in the conventional lighting device as described above, since the light diffusing ink does not exist on the entire surface of the light guide plate, the light utilization rate is low,
In addition, the light guide plate has a rectangular cross section, which causes a problem that it becomes a heavy object.
【０００５】この発明は、上記のような問題点に着目し
てなされたもので、光の利用率が高く、また軽量で薄形
の面照明用の照明装置を得ることを目的としており、ま
たその製造方法を提供することを目的としている。The present invention has been made in view of the above problems, and an object thereof is to obtain a lighting device for surface lighting which has a high light utilization rate and is lightweight and thin. It is intended to provide a manufacturing method thereof.
【０００６】[0006]
【課題を解決するための手段】この発明の照明装置は、
次のように構成したものである。The lighting device of the present invention comprises:
It is configured as follows.
【０００７】（１）線状の光源と、この光源からの光を
側端より導入し、面状に光を放出する発光面を有した導
光板とを備え、該導光板は、前記側端に光源よりの光を
略平行にする凸レンズ状の光導入部を有するとともに、
略平行に導入された光が入射する傾斜面を有し、この傾
斜面の外側に入射した光を前記発光面に拡散反射させる
光拡散層を設けた。(1) It is provided with a linear light source and a light guide plate having a light emitting surface for introducing light from the light source from a side end and emitting light planarly, the light guide plate having the side end. In addition to having a convex lens-shaped light introduction part that makes the light from the light source substantially parallel,
A light diffusing layer is provided which has an inclined surface on which the light introduced substantially in parallel is incident and which diffuses and reflects the light incident on the outside of the inclined surface to the light emitting surface.
【０００８】（２）略平行に配置された二つの線状の光
源と、各光源からの光を両側端より導入し、面状に光を
放出する発光面を有した導光板とを備え、該導光板は、
両側端に各々の光源よりの光を略平行にする凸レンズ状
の光導入部を有するとともに、略平行に導入された光が
入射する傾斜面をそれぞれ有し、これらの傾斜面の外側
に入射した光を前記発光面に拡散反射させる光拡散層を
設けた。(2) It is provided with two linear light sources arranged substantially in parallel, and a light guide plate having a light emitting surface for introducing light from each light source from both ends and emitting light in a planar manner. The light guide plate is
It has a convex lens-shaped light introduction part for making the light from each light source substantially parallel to both ends, and also has inclined surfaces on which the light introduced substantially parallel enters, respectively, and enters the outside of these inclined surfaces. A light diffusion layer for diffusing and reflecting light on the light emitting surface was provided.
【０００９】（３）上記（２）の照明装置において、導
光板は、左右対称の２分割構成とし、二等辺三角形の二
等辺により凹状断面を有するように組み合わせて形成し
た。(3) In the illumination device of (2) above, the light guide plate is formed in a bilaterally symmetrical two-division structure, and is formed by combining the two sides of an isosceles triangle so as to have a concave cross section.
【００１０】（４）上記（１）ないし（３）何れかの照
明装置において、光拡散層は、光反射用微粒子を含む導
光板と同一材料の樹脂を用いて導光板と一体成形した。(4) In the illumination device according to any one of (1) to (3) above, the light diffusion layer is integrally formed with the light guide plate by using a resin of the same material as that of the light guide plate containing the fine particles for light reflection.
【００１１】（５）上記（１）ないし（３）何れかの照
明装置において、光拡散層は、光反射用微粒子が混入し
た導光板と近似の光屈折率を有する光拡散用インクを導
光板の裏面に印刷して形成した。(5) In the illumination device according to any one of (1) to (3) above, the light diffusion layer is a light diffusion plate having a light diffusion ink having a light refractive index similar to that of the light guide plate mixed with light reflection fine particles. It was formed by printing on the back surface of.
【００１２】（６）上記（１）ないし（３）何れかの照
明装置において、光拡散層は、導光板と近似の光屈折率
を有する乳白板等の光拡散フィルムで形成した。(6) In the illumination device according to any one of (1) to (3) above, the light diffusion layer is formed of a light diffusion film such as an opalescent plate having a light refractive index similar to that of the light guide plate.
【００１３】また、この発明の照明装置の製造方法は、
導光板の発光面から面状に光を放出する照明装置の製造
方法において、線状の光源からの光を側端より導入し、
この導入された光が入射する傾斜面を有した左右対称の
二つの断面略三角形の導光部材を、前記傾斜面が二等辺
三角形の二等辺となって凹状断面を有するように突き合
わせて一体的な導光板を形成するようにしたものであ
る。The method of manufacturing the lighting device according to the present invention is
In a method for manufacturing a lighting device that planarly emits light from a light emitting surface of a light guide plate, introducing light from a linear light source from a side end,
The left and right symmetrical light guide members having a substantially triangular cross section having an inclined surface on which the introduced light is incident are butted against each other so that the inclined surface becomes an isosceles isosceles triangle and has a concave cross section. It is designed to form a transparent light guide plate.
【００１４】[0014]
【作用】この発明の照明装置においては、光源からの光
が凸レンズ状の導入部にて略平行となり、導光板内に導
入される。そして、導光板の裏面の傾斜面を通して光拡
散層に到り、発光面に拡散反射される。In the illuminating device of the present invention, the light from the light source is made substantially parallel by the convex lens-like introducing portion and is introduced into the light guide plate. Then, it reaches the light diffusion layer through the inclined surface on the back surface of the light guide plate, and is diffused and reflected by the light emitting surface.
【００１５】またこの発明の照明装置の製造方法におい
ては、凹状断面を有する導光板が左右対称の二つの断面
略三角形の導光部材に分割して製作され、組み立て時に
それらの導光部材が突き合わされて一体的に形成され
る。In the method for manufacturing a lighting device of the present invention, a light guide plate having a concave cross section is divided into two symmetrical light guide members having a substantially triangular cross section, and the light guide members are projected at the time of assembly. They are combined and integrally formed.
【００１６】[0016]
【実施例】図１はこの発明の第１実施例による照明装置
の概略構成を示す断面図であり、ＬＣＤバック照明用の
平面光源として構成した例を示している。図において、
１，１は平行に配置された二つの線状の光源である細径
の蛍光灯（ＣＦＬ）、２は各蛍光灯１，１からの光を両
側端より導入し、面状に光を放出する発光面３を有した
アクリル板等の透明な導光板で、両側端に各々の蛍光灯
１からの光を略平行にする凸レンズ状の光導入部４，４
を有するとともに、略平行に導入された光が斜めに入射
する傾斜面５，５をそれぞれ有している。1 is a cross-sectional view showing a schematic structure of an illuminating device according to a first embodiment of the present invention, showing an example configured as a flat light source for LCD back illumination. In the figure,
1, 1 are two linear light sources arranged in parallel, a small diameter fluorescent lamp (CFL), 2 are the light from each fluorescent lamp 1, 1 introduced from both ends, and emit light in a planar manner. A transparent light guide plate, such as an acrylic plate, having a light emitting surface 3 for converting light from the respective fluorescent lamps 1 into substantially parallel light guide portions 4 and 4 at both ends.
And has inclined surfaces 5 and 5 on which the light introduced substantially in parallel enters, respectively.
【００１７】６は上記傾斜面５，５の外側に設けられた
光拡散層で、光反射用の微粒子が混入した導光板２と近
似の光屈折率を有する光拡散用インクを導光板２の裏面
に印刷することにより形成されており、入射した光を発
光面３に拡散反射させる。７は光拡散層６の外側（上）
を覆っている反射板で、蛍光灯１の周囲にも延長して設
けられている。８は導光板２の発光面３の前面側に配置
されたＬＣＤパネルである。Reference numeral 6 denotes a light diffusing layer provided outside the inclined surfaces 5 and 5, and a light diffusing ink having a light refraction index similar to that of the light guiding plate 2 in which fine particles for light reflection are mixed is provided in the light guiding plate 2. It is formed by printing on the back surface, and diffuses and reflects incident light on the light emitting surface 3. 7 is the outside (upper) of the light diffusion layer 6
Is a reflector that covers the fluorescent lamp 1 and extends around the fluorescent lamp 1. Reference numeral 8 denotes an LCD panel arranged on the front side of the light emitting surface 3 of the light guide plate 2.
【００１８】図２は図１のＡ部の詳細を拡大して示す断
面図である。導光板２の背面の光拡散層６には、上記の
ように光反射用の微粒子６ａが多数混入されている。そ
して、蛍光灯１から出た光は光導入部４で略平行となっ
て導光板２内に入り、更にこの導光板２と屈折率が近似
した光拡散層６に入り、上記微粒子６ａによってＬＣＤ
パネル８側に拡散反射される。FIG. 2 is an enlarged sectional view showing the details of the portion A in FIG. The light diffusion layer 6 on the back surface of the light guide plate 2 is mixed with a large number of light reflecting fine particles 6a as described above. Then, the light emitted from the fluorescent lamp 1 becomes substantially parallel to the light introducing portion 4 and enters the light guide plate 2, and further enters the light diffusing layer 6 having a refractive index similar to that of the light guide plate 2, and the fine particles 6a form the LCD.
It is diffusely reflected to the panel 8 side.
【００１９】また、上記の導光板２は、図３に示すよう
に左右対称の２分割構成となっており、各傾斜面５，５
が二等辺三角形の二等辺となって、凹状断面を有するよ
うに組み合わされて形成されている。図４は図３のＢ部
を拡大して示したものである。また、図５はこの導光板
２の両端に蛍光灯１を配置した状態を示す平面図であ
る。The light guide plate 2 has a bilaterally symmetrical two-part structure as shown in FIG.
Is an isosceles triangle and is an isosceles triangle, and is formed so as to have a concave cross section. FIG. 4 is an enlarged view of portion B of FIG. FIG. 5 is a plan view showing a state in which the fluorescent lamps 1 are arranged on both ends of the light guide plate 2.
【００２０】上記のように構成された照明装置におい
て、導光板２の両端の各蛍光灯１より発生された光は、
それぞれ凸レンズ状の光導入部４にて平行光線となり、
導光板２内に進入する。そして、二等辺三角形の凹状断
面を形成する傾斜面（テーパ面）５に当たった光は、こ
の傾斜面５に導光板２と近似の屈折率を有するインクを
塗布して形成した光拡散層６内に進入し、ここで微粒子
６ａに当たって拡散反射する。In the illuminating device constructed as described above, the light emitted from each fluorescent lamp 1 at both ends of the light guide plate 2 is
Each becomes a parallel light beam at the light introducing portion 4 having a convex lens shape,
It enters into the light guide plate 2. The light that strikes the inclined surface (tapered surface) 5 forming the concave cross section of the isosceles triangle has a light diffusion layer 6 formed by applying ink having a refractive index similar to that of the light guide plate 2 to the inclined surface 5. It enters inside and hits the fine particles 6a there to be diffusely reflected.
【００２１】この時、光拡散層６の微粒子６ａで導光板
２方向に反射した光は、導光板２の発光面３から出て平
面光となり、ＬＣＤパネル８のバック照明に供される。
また、微粒子６ａで反射板７方向に反射した光は、反射
板７で反射して再び光拡散層６内に入り、ここから導光
板２内に入って発光面３から出ていき、同様にＬＣＤパ
ネル８のバック照明用の平面光となる。At this time, the light reflected in the direction of the light guide plate 2 by the fine particles 6a of the light diffusion layer 6 emerges from the light emitting surface 3 of the light guide plate 2 and becomes flat light, which is used for back lighting of the LCD panel 8.
Further, the light reflected by the fine particles 6a toward the reflecting plate 7 is reflected by the reflecting plate 7 and enters the light diffusion layer 6 again, enters the light guide plate 2 from there, and exits from the light emitting surface 3 in the same manner. It becomes flat light for back illumination of the LCD panel 8.
【００２２】ここで、蛍光灯１から出た放射状の光は、
導光板２の側端に形成された凸レンズ状の光導入部４に
よって全てが平行光となり、そのまま導光板２内に進入
して全面にインクが塗布されている光拡散層６に到るの
で、光の有効活用率はほぼ１００％になり、光の利用率
が高く、しかも光分布が均一になるので、理想的な平面
光源となる。また、導光板２は傾斜面５による凹状断面
を有した形状であるので、軽量で薄形の面照明用の照明
装置を実現することができる。Here, the radial light emitted from the fluorescent lamp 1 is
Since the convex lens-shaped light introducing portion 4 formed on the side end of the light guide plate 2 makes all the parallel light, and enters the light guide plate 2 as it is to reach the light diffusion layer 6 coated with ink on the entire surface, The effective utilization rate of light is almost 100%, the utilization rate of light is high, and the light distribution is uniform, so that it becomes an ideal flat light source. Further, since the light guide plate 2 has a shape having a concave cross section by the inclined surface 5, it is possible to realize a lightweight and thin illumination device for surface illumination.
【００２３】次に、上記の照明装置の製造方法について
簡単に説明する。なお、光拡散層６や反射板７について
は一般的であるので、ここでは上述の２分割構造の導光
板２についてのみ説明する。Next, a method of manufacturing the above lighting device will be briefly described. Since the light diffusion layer 6 and the reflection plate 7 are general, only the light guide plate 2 having the above-described two-divided structure will be described here.
【００２４】先ず、図６に示すように、側端より導入さ
た光が入射する傾斜面５を有した左右対称の二つの断面
略三角形の導光部材２ａ，２ｂを製作する。次に、各傾
斜面５が二等辺三角形の二等辺となって凹状断面を有す
るように二つの導光部材２ａ，２ｂを矢印ｃ方向に突き
合わせて、一体的な導光板２を組み立てる。First, as shown in FIG. 6, two bilaterally symmetrical light guide members 2a, 2b having an inclined surface 5 on which the light introduced from the side end is incident are manufactured. Next, the two light guide members 2a and 2b are abutted in the direction of arrow c so that each inclined surface 5 becomes an isosceles triangle isosceles and has a concave cross section, and the integrated light guide plate 2 is assembled.
【００２５】このように、導光板２を中心で分けた形で
製作して合わせることにより、凹状断面の中心部が製作
時に曲がってしまうのを防止することができる。By manufacturing and aligning the light guide plates 2 in such a manner that the light guide plates 2 are separated from each other in this way, it is possible to prevent the center portion of the concave cross section from being bent at the time of manufacture.
【００２６】図７はこの発明の第２実施例を示す断面図
であり、図１と同一符号は同一構成部分を示している。
この実施例は、導光板２の背面の光拡散層９を、光拡散
用インクではなく、導光板２と近似の光屈折率を有する
乳白板等の光拡散フィルムで形成したものである。この
ような構成としても、上述の実施例と同様の作用効果が
得られる。FIG. 7 is a sectional view showing a second embodiment of the present invention, and the same reference numerals as those in FIG. 1 indicate the same components.
In this embodiment, the light diffusion layer 9 on the back surface of the light guide plate 2 is formed of a light diffusion film such as an opalescent plate having a light refractive index similar to that of the light guide plate 2 instead of the light diffusion ink. Even with such a configuration, the same operational effects as those of the above-described embodiment can be obtained.
【００２７】図８はこの発明の第３実施例を示す断面図
であり、導光板２及び光拡散層１０の形式過程を示して
いる。この導光板２の背面の光拡散層１０は、光反射用
の微粒子１０ａを含む導光板２と同一材料の樹脂を用い
て、二色成形技術により導光板２と一体成形されてい
る。FIG. 8 is a sectional view showing a third embodiment of the present invention, showing the formal process of the light guide plate 2 and the light diffusion layer 10. The light diffusion layer 10 on the back surface of the light guide plate 2 is integrally formed with the light guide plate 2 by a two-color molding technique using a resin made of the same material as that of the light guide plate 2 including the light reflecting fine particles 10a.
【００２８】すなわち、先ず図８の（ａ）に示すよう
に、金型２１に上記光反射用の微粒子１０ａを含むアク
リル等の樹脂を容器２２を用いて流し込み、光拡散層１
０を形成する。次に、図８の（ｂ）に示すように、上記
光拡散層１０の上からアクリル等の同一樹脂を流し込
む。これにより、図８の（ｃ）に示すような、導光板２
と一体成形の光拡散層１０が形成される。That is, first, as shown in FIG. 8A, a resin such as acrylic resin containing the light-reflecting fine particles 10a is poured into a mold 21 using a container 22, and the light diffusion layer 1 is formed.
Form 0. Next, as shown in FIG. 8B, the same resin such as acrylic resin is poured from above the light diffusion layer 10. As a result, the light guide plate 2 as shown in FIG.
And the light diffusion layer 10 integrally formed with.
【００２９】このようにして、光拡散層２０を導光板２
と一体成形することができ、製造工程が簡略化されたも
のとなる。また、他の構成は上述の各実施例と同様であ
るので、同等の性能を得ることができる。In this way, the light diffusion layer 20 is connected to the light guide plate 2.
Can be integrally molded with, and the manufacturing process is simplified. Further, since the other configurations are the same as those of the above-mentioned respective embodiments, the same performance can be obtained.
【００３０】図９はこの発明の第４実施例を示す断面図
である。この実施例は、導光板２の背面の光拡散層６
（ａ）の厚さ寸法を部分的に変化させたもので、具体的
には蛍光灯１に近い程厚く、蛍光灯１から遠くなる程薄
くしてある。このような構造とすることにより、光取り
出し分布の均一性がより向上したものとなる。FIG. 9 is a sectional view showing a fourth embodiment of the present invention. In this embodiment, the light diffusion layer 6 on the back surface of the light guide plate 2 is used.
The thickness dimension of (a) is partially changed. Specifically, it is thicker as it is closer to the fluorescent lamp 1 and thinner as it is farther from the fluorescent lamp 1. With such a structure, the uniformity of the light extraction distribution is further improved.
【００３１】図１０はこの発明の第５実施例を示す断面
図である。この実施例は、導光板２の各傾斜面５，５を
曲面（凹面）としたものであり、これによって輝度の均
一性の向上を図ることができる。FIG. 10 is a sectional view showing a fifth embodiment of the present invention. In this embodiment, each of the inclined surfaces 5 and 5 of the light guide plate 2 is a curved surface (concave surface), which can improve the uniformity of brightness.
【００３２】[0032]
【発明の効果】以上のように、この発明によれば、光源
からの光を凸レンズ状の光導入部により略平行にして導
光板内に導き、また導光板の背面に傾斜面を設けてその
外側に光拡散層を形成するようにしたので、光の利用率
が高くなるとともに、軽量で薄形なものになるという効
果がある。As described above, according to the present invention, the light from the light source is guided substantially parallel by the convex lens-shaped light introducing portion into the light guide plate, and the inclined surface is provided on the back surface of the light guide plate. Since the light diffusing layer is formed on the outer side, there is an effect that the utilization factor of light is increased and the light weight and thin shape are achieved.
【００３３】また、上記傾斜面を有した左右対称の二つ
の導光部材を別々に製作し、これらの導光部材を各傾斜
面が二等辺三角形の二等辺となって凹状断面を有するよ
うに突き合わせて一体的な導光板を形成するようにした
ので、凹状断面の中心部が製作時に曲がってしまうのを
防止することができる。Further, two symmetrical light guide members having the above-mentioned inclined surface are separately manufactured, and these light guide members are formed so that each inclined surface becomes an isosceles triangle of an isosceles triangle and has a concave cross section. Since the light guide plates are integrally formed by butting, it is possible to prevent the center portion of the concave cross section from being bent at the time of manufacturing.
【図１】 この発明の第１実施例の構成を示す断面図FIG. 1 is a sectional view showing the configuration of a first embodiment of the present invention.
【図２】 図１のＡ部を拡大して示す断面図FIG. 2 is an enlarged sectional view showing part A of FIG.
【図３】 図１の導光板の形状を示す説明図FIG. 3 is an explanatory view showing the shape of the light guide plate of FIG.
【図４】 図３のＢ部の拡大図FIG. 4 is an enlarged view of part B in FIG.
【図５】 図３の導光板の両端に蛍光灯を配置した状態
を示す平面図5 is a plan view showing a state in which fluorescent lamps are arranged at both ends of the light guide plate of FIG.
【図６】 図３の導光板の製造過程を示す断面図6 is a cross-sectional view showing a manufacturing process of the light guide plate of FIG.
【図７】 この発明の第２実施例の構成を示す断面図FIG. 7 is a sectional view showing the configuration of a second embodiment of the present invention.
【図８】 この発明の第３実施例の構成を示す断面図FIG. 8 is a sectional view showing the structure of a third embodiment of the present invention.
【図９】 この発明の第４実施例の構成を示す断面図FIG. 9 is a sectional view showing the structure of a fourth embodiment of the present invention.
【図１０】 この発明の第５実施例の構成を示す断面図FIG. 10 is a sectional view showing the structure of a fifth embodiment of the present invention.
【図１１】 従来例を示す構成図FIG. 11 is a configuration diagram showing a conventional example.
１ 蛍光灯（光源） ２ 導光板 ２ａ，２ｂ 導光部材 ３ 発光面 ４ 光導入部 ５ 傾斜面 ６ 光拡散層 ６ａ 微粒子 ７ 反射板 ８ ＬＣＤパネル ９ 光拡散層 １０ 光拡散層 １０ａ 微粒子 DESCRIPTION OF SYMBOLS 1 Fluorescent lamp (light source) 2 Light guide plates 2a, 2b Light guide member 3 Light emitting surface 4 Light introducing part 5 Inclined surface 6 Light diffusing layer 6a Fine particles 7 Reflecting plate 8 LCD panel 9 Light diffusing layer 10 Light diffusing layer 10a Fine particles
Claims (7)
より導入し、面状に光を放出する発光面を有した導光板
とを備え、該導光板は、前記側端に光源よりの光を略平
行にする凸レンズ状の光導入部を有するとともに、略平
行に導入された光が入射する傾斜面を有し、この傾斜面
の外側に入射した光を前記発光面に拡散反射させる光拡
散層を設けたことを特徴とする照明装置。1. A linear light source, and a light guide plate having a light emitting surface for introducing light from the light source from a side end and emitting light planarly, wherein the light guide plate is provided at the side end. It has a convex lens-shaped light introduction part that makes the light from the light source substantially parallel, and has an inclined surface on which the light introduced substantially parallel is incident, and diffuses the light incident on the outside of this inclined surface to the light emitting surface. An illuminating device comprising a light diffusing layer for reflecting the light.
と、各光源からの光を両側端より導入し、面状に光を放
出する発光面を有した導光板とを備え、該導光板は、両
側端に各々の光源よりの光を略平行にする凸レンズ状の
光導入部を有するとともに、略平行に導入された光が入
射する傾斜面をそれぞれ有し、これらの傾斜面の外側に
入射した光を前記発光面に拡散反射させる光拡散層を設
けたことを特徴とする照明装置。2. A light guide plate having two linear light sources arranged substantially parallel to each other and a light guide plate having a light emitting surface for introducing light from each light source from both ends and emitting light planarly, The light guide plate has convex lens-shaped light introducing portions that make light from the respective light sources substantially parallel to each other at both ends, and each has an inclined surface on which the light introduced substantially parallel is incident. An illuminating device comprising a light diffusing layer for diffusing and reflecting light incident on the outside on the light emitting surface.
二等辺三角形の二等辺により凹状断面を有するように組
み合わせて形成したことを特徴とする請求項２記載の照
明装置。3. The light guide plate has a bilaterally symmetrical two-part configuration,
The lighting device according to claim 2, wherein the lighting device is formed by combining isosceles of an isosceles triangle so as to have a concave cross section.
板と同一材料の樹脂を用いて導光板と一体成形したこと
を特徴とする請求項１ないし３いずれか記載の照明装
置。4. The lighting device according to claim 1, wherein the light diffusion layer is integrally formed with the light guide plate by using a resin of the same material as that of the light guide plate containing the light reflection fine particles.
導光板と近似の光屈折率を有する光拡散用インクを導光
板の裏面に印刷して形成したことを特徴とする請求項１
ないし３いずれか記載の照明装置。5. The light diffusing layer is formed by printing a light diffusing ink having a light refractive index similar to that of the light guiding plate mixed with light reflecting fine particles on the back surface of the light guiding plate.
The illumination device according to any one of 1 to 3.
有する乳白板等の光拡散フィルムで形成したことを特徴
とする請求項１ないし３何れか記載の照明装置。6. The lighting device according to claim 1, wherein the light diffusing layer is formed of a light diffusing film such as an opalescent plate having a light refractive index similar to that of the light guide plate.
照明装置の製造方法において、線状の光源からの光を側
端より導入し、この導入された光が入射する傾斜面を有
した左右対称の二つの断面略三角形の導光部材を、前記
傾斜面が二等辺三角形の二等辺となって凹状断面を有す
るように突き合わせて一体的な導光板を形成するように
したことを特徴とする照明装置の製造方法。7. A method of manufacturing an illuminating device which emits light in a planar manner from a light emitting surface of a light guide plate, wherein light from a linear light source is introduced from a side end, and an inclined surface on which the introduced light is incident is formed. The left and right symmetrical light guide members having a substantially triangular cross-section are butted so that the inclined surface becomes an isosceles isosceles triangle and has a concave cross section to form an integrated light guide plate. A method for manufacturing a characteristic lighting device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4313297A JPH06160638A (en) | 1992-11-24 | 1992-11-24 | Illumination device and manufacture thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4313297A JPH06160638A (en) | 1992-11-24 | 1992-11-24 | Illumination device and manufacture thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH06160638A true JPH06160638A (en) | 1994-06-07 |
Family
ID=18039529
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP4313297A Pending JPH06160638A (en) | 1992-11-24 | 1992-11-24 | Illumination device and manufacture thereof |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH06160638A (en) |
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0894844A (en) * | 1994-09-26 | 1996-04-12 | Fujitsu Ltd | Light guide plate, surface light source using the same, and non-emissive display device |
| JP2002268058A (en) * | 2001-03-07 | 2002-09-18 | Nitto Denko Corp | Reflection plate incorporated type liquid crystal cell substrate and liquid crystal display device |
| WO2003032073A1 (en) * | 2001-09-27 | 2003-04-17 | Tsujiden Co., Ltd. | Reflective film |
| KR100414882B1 (en) * | 1996-09-25 | 2004-05-31 | 삼성전자주식회사 | Backlight structure of lcd for optical uniformity |
| WO2007023703A1 (en) * | 2005-08-26 | 2007-03-01 | Tohoku University | Liquid crystal display and light guide plate |
| JP2009064751A (en) * | 2007-09-10 | 2009-03-26 | Epson Imaging Devices Corp | Lighting device and manufacturing method thereof, and electrooptic device, as well as electronic equipment |
| US9464783B2 (en) | 2013-03-15 | 2016-10-11 | John Paul Morgan | Concentrated photovoltaic panel |
| US9595627B2 (en) | 2013-03-15 | 2017-03-14 | John Paul Morgan | Photovoltaic panel |
| US9714756B2 (en) | 2013-03-15 | 2017-07-25 | Morgan Solar Inc. | Illumination device |
| US9960303B2 (en) | 2013-03-15 | 2018-05-01 | Morgan Solar Inc. | Sunlight concentrating and harvesting device |
| WO2020241075A1 (en) * | 2019-05-31 | 2020-12-03 | マクセル株式会社 | Information display system and vehicle information display system using same |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH04234729A (en) * | 1990-09-27 | 1992-08-24 | Compaq Computer Corp | Back light system of liquid crystal display |
-
1992
- 1992-11-24 JP JP4313297A patent/JPH06160638A/en active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH04234729A (en) * | 1990-09-27 | 1992-08-24 | Compaq Computer Corp | Back light system of liquid crystal display |
Cited By (19)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0894844A (en) * | 1994-09-26 | 1996-04-12 | Fujitsu Ltd | Light guide plate, surface light source using the same, and non-emissive display device |
| KR100414882B1 (en) * | 1996-09-25 | 2004-05-31 | 삼성전자주식회사 | Backlight structure of lcd for optical uniformity |
| JP2002268058A (en) * | 2001-03-07 | 2002-09-18 | Nitto Denko Corp | Reflection plate incorporated type liquid crystal cell substrate and liquid crystal display device |
| CN100362407C (en) * | 2001-09-27 | 2008-01-16 | 株式会社智积电 | Reflective film |
| WO2003032073A1 (en) * | 2001-09-27 | 2003-04-17 | Tsujiden Co., Ltd. | Reflective film |
| US8130340B2 (en) | 2005-08-26 | 2012-03-06 | Tohoku University | Liquid crystal display and light guide plate |
| JP2007059316A (en) * | 2005-08-26 | 2007-03-08 | Tohoku Univ | Liquid crystal display and light guide plate |
| WO2007023703A1 (en) * | 2005-08-26 | 2007-03-01 | Tohoku University | Liquid crystal display and light guide plate |
| TWI391749B (en) * | 2005-08-26 | 2013-04-01 | Univ Tohoku | Liquid crystal display |
| JP2009064751A (en) * | 2007-09-10 | 2009-03-26 | Epson Imaging Devices Corp | Lighting device and manufacturing method thereof, and electrooptic device, as well as electronic equipment |
| US9595627B2 (en) | 2013-03-15 | 2017-03-14 | John Paul Morgan | Photovoltaic panel |
| US9464782B2 (en) | 2013-03-15 | 2016-10-11 | Morgan Solar Inc. | Light panel, optical assembly with improved interface and light panel with improved manufacturing tolerances |
| US9464783B2 (en) | 2013-03-15 | 2016-10-11 | John Paul Morgan | Concentrated photovoltaic panel |
| US9714756B2 (en) | 2013-03-15 | 2017-07-25 | Morgan Solar Inc. | Illumination device |
| US9732938B2 (en) | 2013-03-15 | 2017-08-15 | Morgan Solar Inc. | Illumination panel |
| US9960303B2 (en) | 2013-03-15 | 2018-05-01 | Morgan Solar Inc. | Sunlight concentrating and harvesting device |
| WO2020241075A1 (en) * | 2019-05-31 | 2020-12-03 | マクセル株式会社 | Information display system and vehicle information display system using same |
| JP2020197564A (en) * | 2019-05-31 | 2020-12-10 | マクセル株式会社 | Information display system and vehicular information display system utilizing the same |
| US12286012B2 (en) | 2019-05-31 | 2025-04-29 | Maxell, Ltd. | Information display system and vehicle information display system using the same |
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