JPH0981048A - Light transmission plate device - Google Patents

Light transmission plate device

Info

Publication number
JPH0981048A
JPH0981048A JP26243895A JP26243895A JPH0981048A JP H0981048 A JPH0981048 A JP H0981048A JP 26243895 A JP26243895 A JP 26243895A JP 26243895 A JP26243895 A JP 26243895A JP H0981048 A JPH0981048 A JP H0981048A
Authority
JP
Japan
Prior art keywords
light
guide plate
light guide
prism
back surface
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
Application number
JP26243895A
Other languages
Japanese (ja)
Inventor
Honami Harada
保波 原田
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
BEAM DENSHI KOGYO KK
Original Assignee
BEAM DENSHI KOGYO KK
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by BEAM DENSHI KOGYO KK filed Critical BEAM DENSHI KOGYO KK
Priority to JP26243895A priority Critical patent/JPH0981048A/en
Publication of JPH0981048A publication Critical patent/JPH0981048A/en
Pending legal-status Critical Current

Links

Abstract

PROBLEM TO BE SOLVED: To form the projecting surface of a front or rear surface which are projecting surface or an opposite surface as a uniform light emitting surface by providing this front or rear surface on a prism reflection surface and forming the prism reflection surface variably in its angle, pitch or depth or fixedly in one thereof and variably in the other two. SOLUTION: The rear surface on one side edge 2a of a light transmission plate 1 is provided with a recessed light receiving part 3 opening to a required shape. This light receiving part 3 is internally provided with an LED in such a manner that at least the light emitting part thereof may be inserted and arranged into this part. The front surface which is the projecting surface of the light transmission plate 1 is previously installed on the projecting matte surface 5 formed with satin patterns. The rear surface which is the surface opposite to this projecting matte surface 5 is provided with a reflection surface 7 to act the matte surface 5 as a uniform emitting surface by varying the angle, pitch and depth of the parallel striped groove prisms. While all of the angle, pitch and depth of the striped groove prism of the reflection surface 7 may be made variable, the matte surface 5 may be formed as the uniform light emitting surface as well by forming one thereof fixed and the other two variable.

Description

【発明の詳細な説明】Detailed Description of the Invention

【0001】[0001]

【発明の属する技術分野】この発明は、小型携帯パソコ
ン、携帯電話等の液晶文字板、画像板等を均一に照射す
る導光板装置に関する。
BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a light guide plate device for uniformly irradiating a liquid crystal dial plate, an image plate or the like of a small portable personal computer, a mobile phone or the like.

【0002】[0002]

【従来の技術】従来、光源を板体の側端から受け、板体
の表面に均一な投光を行う導光板は、光源から離れるに
したがって反射面が順次広くなるように間隔を設定した
帯状反射膜を板体の裏面に塗布したものが一般である。
2. Description of the Related Art Conventionally, a light guide plate which receives a light source from a side edge of a plate and uniformly projects light on the surface of the plate has a strip shape in which a reflection surface is gradually widened as the distance from the light source increases. Generally, a reflective film is applied to the back surface of the plate.

【0003】また従来の導光板の表面は平滑面であって
照度にむらがあり、これを平均化するために導光板と液
晶板の間に2枚のプリズム板等からなる拡散板を配置し
ているものである。
Further, the surface of the conventional light guide plate is a smooth surface, and the illuminance is uneven, and in order to average this, a diffuser plate composed of two prism plates or the like is arranged between the light guide plate and the liquid crystal plate. It is a thing.

【0004】[0004]

【発明が解決しようとする課題】前記従来の均一反射面
装置は、帯状反射膜をシルク印刷などの手段で製作する
ものであるから製作に手間が掛り、大量生産むきでな
く、また導光板と別の素材を付設するので光の吸収があ
って反射効率がよくないものである。
Since the conventional uniform reflecting surface device is manufactured by a method such as silk printing of the strip-shaped reflecting film, it takes a lot of time and effort to manufacture it, and it is not suitable for mass production. Since another material is attached, it absorbs light and the reflection efficiency is not good.

【0005】また2枚のプリズム板等からなる拡散板を
配置してコスト高を招くばかりか、その厚みを増加し、
嵩張る欠点がある。
Further, not only the cost is increased by arranging a diffusion plate composed of two prism plates but the thickness thereof is increased,
It has the drawback of being bulky.

【0006】[0006]

【課題を解決するための手段】透明プラスチック材を用
いて平板に成型される導光板の一側端面、複数側端面、
一側縁寄りの表面または裏面、複数側縁寄り表面または
裏面において冷陰極管、電球・LED等適宜発光体であ
る光源を受光する受光部を設け、その導光板の投光面と
なる表面または裏面を梨地模様の投光マット面に設け、
その投光面と反対面である表面または裏面を、角度、ピ
ッチ、深さまたは高さを可変、またはそれら角度、ピッ
チ、および深さまたは高さの内一を一定に、他の二を可
変に構成して平行な筋溝または突条のプリズム反射面に
設け、導光板の表面または裏面の投光面が均一の発光面
となることを特徴とする導光板装置にある。
[Means for Solving the Problems] One end surface, a plurality of end surfaces of a light guide plate molded into a flat plate using a transparent plastic material,
A light receiving portion for receiving a light source such as a cold cathode tube, a light bulb or an LED, which is an appropriate light emitting body, is provided on the front surface or the back surface near the one side edge, or the surface or the back surface facing the plurality of side edges, and the surface serving as the light emitting surface of the light guide plate or The back side is provided on the matte surface with a satin pattern,
The front surface or the back surface opposite to the projection surface can be changed in angle, pitch, depth or height, or one of the angle, pitch and depth or height can be fixed, and the other two can be changed. The light guide plate device is characterized in that it is provided on parallel prismatic reflecting surfaces of linear grooves or ridges, and the light projecting surface of the front surface or the back surface of the light guide plate becomes a uniform light emitting surface.

【0007】導光板の一側縁寄りまたは複数側縁寄りの
表面もしくは裏面に冷陰極管、電球・LED等適宜発光
体である光源を受光する受光部を設け、その受光部に対
応する表面または裏面を、所要の角度、ピッチ、および
深さまたは高さを有する平行な筋溝または突条の対応プ
リズム反射面に、所要幅設けてもよいものである。
A light receiving portion for receiving a light source which is a light emitting body such as a cold cathode tube, a light bulb or an LED is provided on the front surface or the back surface near one side edge or a plurality of side edges of the light guide plate, and the surface corresponding to the light receiving section or The back surface may be provided with a required width on the corresponding prism reflecting surface of parallel stripes or ridges having a required angle, pitch, and depth or height.

【0008】導光板の一側端面、複数側端面に冷陰極
管、電球・LED等適宜発光体である光源を受光する凹
陥受光部を設けてもよいものである。
A concave light receiving portion for receiving a light source such as a cold cathode tube, a light bulb or an LED, may be provided on one end surface or a plurality of end surfaces of the light guide plate.

【0009】導光板の一側縁寄りまたは複数側縁寄りの
表面もしくは裏面に冷陰極管、電球・LED等適宜発光
体である光源を受光する凹陥受光部を設けてもよいもの
である。
A concave light receiving portion for receiving a light source which is a light emitting body such as a cold cathode tube, a light bulb or an LED may be provided on a front surface or a back surface near one side edge or a plurality of side edges of the light guide plate.

【0010】導光板の一側縁寄りまたは複数側縁寄りの
表面もしくは裏面の凹陥受光部に対応する反対面の表面
または裏面を、所要の角度、ピッチ、および深さまたは
高さを有する平行な筋溝または突条の対応プリズム反射
面に、所要幅設けてもよいものである。
The surface or the back surface of the light guide plate which faces one side edge or a plurality of side edges of the front surface or the back surface, which corresponds to the concave light receiving portion, is formed into a parallel shape having a required angle, pitch, and depth or height. A required width may be provided on the corresponding prism reflecting surface of the groove or the ridge.

【0011】導光板の投光面となる表面または裏面を梨
地模様の投光マット面に、反対面のプリズム反射面にお
ける平行な筋溝または突条と所要角度で交差し、かつ所
要の角度、ピッチ、深さまたは高さを一定もしくは可
変、またはそれら角度、ピッチ、深さまたは高さの内一
を一定に、他の二を可変に構成する平行な筋溝または突
条の投光プリズム面に設けてもよいものである。
The front surface or the back surface which is the light projecting surface of the light guide plate intersects the matte surface of the matte pattern with the parallel groove or ridge on the opposite prism reflecting surface at the required angle, and the required angle, Pitch, depth or height of constant or variable, or one of these angles, pitch, depth or height is constant and the other two are variable: parallel prismatic grooves or ridges May be provided in the.

【0012】[0012]

【発明の実施の形態】透明プラスチック材を用いて平板
に成型される導光板の対応側縁寄り裏面において冷陰極
管、電球・LED等適宜発光体である光源を受光する受
光部を設け、その導光板の投光面となる表面を梨地模様
の投光マット面に設け、その投光面と反対面である裏面
を、角度を一定、ピッチ、深さを可変に構成して平行な
筋溝のプリズム反射面に設け、導光板の表面の投光面が
均一の発光面となることを特徴とする導光板装置にあ
る。
BEST MODE FOR CARRYING OUT THE INVENTION A light receiving portion for receiving a light source which is a light emitting body such as a cold cathode tube, a light bulb or an LED is provided on a back surface of a light guide plate molded into a flat plate using a transparent plastic material, near the corresponding side edge. The light-transmitting surface of the light guide plate is provided on the matte surface of the matte pattern, and the back surface, which is the opposite surface of the light-transmitting surface, is formed with parallel angle grooves with variable pitch and depth. The light guide plate device is characterized in that the light projecting surface on the surface of the light guide plate is a uniform light emitting surface.

【0013】導光板の対応側縁寄りの裏面に冷陰極管、
電球・LED等適宜発光体である光源を受光する受光部
を設け、その受光部に対応する表面を、角度、ピッチ、
および深さが一定の平行な凸条の対応プリズム反射面
に、所要幅設ける。
On the back surface of the light guide plate near the corresponding side edge, a cold cathode tube,
A light receiving part for receiving a light source such as a light bulb or an LED, which is an appropriate light emitting body, is provided, and the surface corresponding to the light receiving part is angled, pitched,
And the required width is provided on the corresponding reflecting surfaces of the parallel convex stripes having a constant depth.

【0014】導光板の一側端面、複数側端面に冷陰極
管、電球・LED等適宜発光体である光源を受光する凹
陥受光部を設ける。
A concave light receiving portion for receiving a light source such as a cold cathode tube, a light bulb, an LED, or the like is provided on one end surface or a plurality of end surfaces of the light guide plate.

【0015】導光板の一側縁寄りまたは対応側縁寄りの
裏面に冷陰極管、電球・LED等適宜発光体である光源
を受光する凹陥受光部を設ける。
A concave light receiving portion for receiving a light source such as a cold-cathode tube, a light bulb or an LED is appropriately provided on the back surface of the light guide plate near one side edge or the corresponding side edge.

【0016】導光板の投光面となる表面を梨地模様の投
光マット面に、反対面のプリズム反射面における平行な
筋溝または突条と所要角度で交差し、かつ所要の角度、
ピッチ、深さまたは高さを一定に構成する平行な筋溝の
投光プリズム面に設ける。
The surface which becomes the light projecting surface of the light guide plate intersects with the matte surface of the matte pattern at the required angle with the parallel groove or ridge on the opposite prism reflecting surface, and at the required angle,
It is provided on the projection prism surface of the parallel groove having a constant pitch, depth or height.

【0017】[0017]

【実施例】以下、この発明の実施例について説明する
と、図1〜図5は第1の実施例で、1は導光板で、透明
プラスチック材を用いて所要の幅と長さと厚みを持つ平
板に成型され、その一側縁2aの裏面に所要の形状で開
口する凹陥受光部3を設け、その凹陥受光部3内にLE
D4を、その少なくとも発光部を挿入配置可能に設け、
その導光板1の投光面となる表面は、梨地模様を施して
投光マット面5に設け、その投光マット面5と反対面で
ある裏面は図10に示すように平行な筋溝プリズム6a
の角度θ、ピッチp、および深さhを異ならしめて投光
マット面5が均一の発光面となるプリズム反射面7を設
けてなるものである。
DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below. FIGS. 1 to 5 show a first embodiment, 1 is a light guide plate, and a flat plate having a required width, length and thickness using a transparent plastic material. And a recessed light receiving portion 3 which is opened in a required shape on the back surface of the one side edge 2a, and LE is provided in the recessed light receiving portion 3.
D4 is provided so that at least the light emitting portion can be inserted and arranged,
The light-projecting surface of the light guide plate 1 is provided with a satin pattern on the light-projecting mat surface 5, and the back surface opposite to the light-projecting mat surface 5 has parallel stripe groove prisms as shown in FIG. 6a
The prism reflection surface 7 is provided so that the projection mat surface 5 becomes a uniform light emitting surface by differentiating the angle θ, the pitch p, and the depth h.

【0018】前記投光マット面5の梨地模様は、メッシ
ュ#500〜#800の粒子をブラストして設けてい
る。
The satin pattern on the light-projecting mat surface 5 is provided by blasting particles of mesh # 500 to # 800.

【0019】光の拡散は、条件が数多くあるため、各点
の照度を測定し、筋溝プリズム6aの角度θ、ピッチ
p、および深さhの決定をする。
Since there are many conditions for light diffusion, the illuminance at each point is measured to determine the angle θ, pitch p, and depth h of the groove prism 6a.

【0020】前記プリズム反射面7の筋溝プリズム6a
の角度θ、ピッチp、および深さhは、それらの全部を
可変としてもよいが、その一を一定に設け、他の二を可
変に設けて投光マット面5が均一の発光面となるように
することができる。また図12で示すように、前記プリ
ズム反射面7の筋溝プリズム6aは、突条プリズム6b
とすることができる。
The grooved prism 6a of the prism reflecting surface 7
The angle .theta., The pitch p, and the depth h may all be variable, but one of them is fixed and the other two are variably set so that the light emitting mat surface 5 becomes a uniform light emitting surface. You can Further, as shown in FIG. 12, the linear groove prism 6a of the prism reflecting surface 7 is a ridge prism 6b.
It can be.

【0021】 次にその具体的実施例を説明すると、 単位 mm 筋溝プリズム6aの実施例1 角度 100° 一定(頂角) 深さ 0.002〜0.149 可変 ピッチ 0.15〜0.5 可変 筋溝プリズム6aの実施例2 ピッチ 0.5 & 0.1 一定 深さ 0.05〜0.01 可変 角度 90°〜110° 可変(頂角) 突条プリズム6bの実施例3 ピッチ 0.1 〜 0.8 可変 深さ 0.002〜 0.25 可変 角度 30°〜 85° 可変(傾斜角) 使用ランプ例 a 冷陰極管 2.6mm径 発光長 230mm b 電球 2.0mm径 高さ 5mm c LED 6灯 導光板寸法 a 232×178 b 26× 40 c 90×118Next, a description will be given of specific examples thereof. Unit 1 mm Example 1 of groove groove prism 6a Angle 100 ° Constant (apex angle) Depth 0.002 to 0.149 Variable pitch 0.15 to 0.5 Example 2 of variable streak prism 6a Pitch 0.5 & 0.1 Constant depth 0.05-0.01 Variable angle 90 ° -110 ° Variable (apex angle) Example 3 of ridge prism 6b Pitch 0. 1 to 0.8 Variable depth 0.002 to 0.25 Variable angle 30 ° to 85 ° Variable (tilt angle) Example of lamp used a Cold cathode tube 2.6 mm diameter Emission length 230 mm b Light bulb 2.0 mm Diameter height 5 mm c LED 6 lights, light guide plate size a 232 × 178 b 26 × 40 c 90 × 118

【0022】前記導光板1の凹陥受光部3に対応する表
面を所要の角度θ1 、ピッチp1 、および高さh1 を有
する突条プリズム8を所要幅設け、対応プリズム反射面
9を設けている。この突条プリズム8は、筋溝プリズム
としてもよいものである。
On the surface of the light guide plate 1 corresponding to the recessed light receiving portion 3, a ridge prism 8 having a required angle .theta.1, a pitch p1 and a height h1 is provided with a required width, and a corresponding prism reflecting surface 9 is provided. The ridge prism 8 may be a groove prism.

【0023】 次にその突条プリズム8の具体的実施例に説明すると、単位 mm ピッチ 0.1 一定 深さ 0.042 一定 角度 100° 一定(谷角)Next, a specific example of the ridge prism 8 will be described. Unit mm Pitch 0.1 Constant depth 0.042 Constant angle 100 ° Constant (valley angle)

【0024】前記導光板1は、図4および図5に示すよ
うに、表面および側面を窓枠形反射幕10により遮蔽反
射し、裏面を反射幕11により遮蔽反射してもよいもの
である。
As shown in FIGS. 4 and 5, the light guide plate 1 may have the front surface and the side surface shielded and reflected by the window frame type reflective curtain 10 and the back surface shielded and reflected by the reflective curtain 11.

【0025】前記導光板1の凹陥受光部3の形状は、図
3で示すように、円弧形に設けているが(LEDの光を
平均に拡散する)、図6に示すように、方形またはその
他の形状(図示しない)にすることができる。また輝度
を大きくするためには、LED等の点光源の数を増やす
ことにより簡単に行えるものでもある。
The concave light receiving portion 3 of the light guide plate 1 is formed in an arc shape as shown in FIG. 3 (which diffuses the light of the LED evenly), but as shown in FIG. Alternatively, it may have another shape (not shown). Further, in order to increase the brightness, it can be easily performed by increasing the number of point light sources such as LEDs.

【0026】導光板12は、第2の実施例であって、そ
の凹陥受光部3は、図7〜図9に示すように、導光板1
2の互いに対応する一側縁2aおよび他側縁2bの裏面
に設けているものである。この場合に、表面に突条プリ
ズム8を凹陥受光部3に対応させて所要幅設けて対応プ
リズム反射面9を設けてもよいことは勿論であるが、裏
面のプリズム6の角度θ、ピッチp、および深さhも、
第1の実施例のものと基本的に同一理論によるものであ
る。
The light guide plate 12 is the second embodiment, and the concave light receiving portion 3 has the light guide plate 1 as shown in FIGS.
It is provided on the back surfaces of the one side edge 2a and the other side edge 2b corresponding to each other. In this case, it goes without saying that the projection prism 8 may be provided on the front surface so as to have the required width in correspondence with the concave light receiving portion 3 to provide the corresponding prism reflection surface 9, but the angle θ of the prism 6 on the back surface and the pitch p. , And depth h also
It is based on the same theory as that of the first embodiment.

【0027】図示しないが、この第2の実施例の導光板
12において、表面および側面を窓枠形反射幕10によ
り遮蔽反射し、裏面を反射幕11により遮蔽反射しても
よいものである。
Although not shown, in the light guide plate 12 of the second embodiment, the front surface and the side surface may be shielded and reflected by the window frame type reflection screen 10 and the back surface may be shielded and reflected by the reflection screen 11.

【0028】導光板13は、第3の実施例であって、図
10に示すように、前記第2の実施例の導光板12の投
光面となる表面の梨地模様の投光マット面5に、反対裏
面のプリズム反射面7における平行な筋溝プリズム6a
と、例えば、90度で交差し、かつ例えば、角度100
°(谷角)、ピッチ(p)0.2mm、深さ(h)0.
042mm、拡散帯マット面5aの幅0.1mmの平行
な筋溝プリズム14を投光面に設け、投光マット・プリ
ズム面15に設けている。この筋溝プリズム14は、図
示しないが、突条プリズムとしても、勿論よいものであ
る。
The light guide plate 13 is the third embodiment, and as shown in FIG. 10, the matte projection surface 5 of the light guide plate 12 of the second embodiment, which is the light projection surface, has a matte pattern. In addition, the parallel groove prism 6a on the prism reflection surface 7 on the opposite back surface
And intersect, for example, 90 degrees and, for example, an angle of 100
° (valley angle), pitch (p) 0.2 mm, depth (h) 0.
A parallel groove prism 14 having a width of 042 mm and a width of the diffusion band mat surface 5a of 0.1 mm is provided on the light projecting surface and on the light projecting mat prism surface 15. Although not shown, the groove prism 14 may of course be a ridge prism.

【0029】冷陰極管16を、図14示すように、導光
板1に対して、また図示しないが導光板12、13に対
しても同様に配置してもよいものである。電球について
も、図示しないが、前述のLED4および冷陰極管16
と同様に、導光板1、導光板12および導光板13に対
して配置してもよいものである。
The cold cathode tubes 16 may be arranged similarly to the light guide plate 1 as shown in FIG. 14 or to the light guide plates 12 and 13 (not shown). Although not shown, the bulb 4 and the cold cathode fluorescent lamp 16 are also included in the bulb.
Similarly to the above, the light guide plate 1, the light guide plate 12, and the light guide plate 13 may be arranged.

【0030】[0030]

【効果】この発明は、以上のようになるから、発光体か
らの照射光は、受光部より導光板に効率よく入射するこ
とができるものである。
According to the present invention, as described above, the irradiation light from the light emitting body can be efficiently incident on the light guide plate from the light receiving portion.

【0031】またこの発明は、その投光面と反対面であ
る表面または裏面をプリズム反射面に設け、そのプリズ
ム反射面の角度、ピッチ、および深さを可変またはそれ
ら内一を一定に設け、他の二を可変に設け、表面または
裏面の投光面を均一の発光面となすことができる。
Further, according to the present invention, the front surface or the back surface opposite to the light projecting surface is provided on the prism reflecting surface, and the angle, pitch, and depth of the prism reflecting surface are variable or one of them is fixed, The other two can be variably provided and the front or back light projecting surface can be made to be a uniform light emitting surface.

【0032】またこの発明は、導光板の投光面となる表
面または裏面を梨地模様の拡散マット面に設けているか
ら、拡散投光ができ、従来の縦横二枚のプリズム拡散板
を不要とし、製造コストの低減と導光板装置の厚みの縮
小に寄与するものである。
Further, according to the present invention, since the front surface or the back surface serving as the light projecting surface of the light guide plate is provided on the matte diffusing matte surface, diffused light can be projected, and the conventional two prism diffuser plates, vertical and horizontal, are not required. This contributes to reduction of manufacturing cost and reduction of thickness of the light guide plate device.

【0033】特に投光面となる表面の梨地模様の投光マ
ット面5に、反対裏面のプリズム反射面における平行な
筋溝または突条プリズムと90度乃至、その10度マイ
ナス角程度で交差する筋溝または突条プリズムを投光面
に設け、投光マット・プリズム面とする同一発光体で明
るさの均一性が増加し、かつ明るさも倍になった。
In particular, the matte projection surface 5 having a matte pattern on the surface serving as the projection surface intersects with parallel stripe grooves or projecting prisms on the prism reflecting surface on the opposite back surface at an angle of 90 ° to 10 ° minus. By providing a groove or a ridge prism on the light-projecting surface, the uniformity of brightness was increased and the brightness was doubled with the same light-emitting body used as the projection mat / prism surface.

【0034】よって、この発明は、小型携帯パソコン、
携帯電話等の液晶文字板、画像板等を照射する導光板装
置を高輝度で均一に、可及的厚みを薄く、しかも低コス
トで提供できるものである。
Therefore, the present invention provides a small portable personal computer,
It is possible to provide a light guide plate device for irradiating a liquid crystal dial plate, an image plate, etc. of a mobile phone or the like with high brightness and uniformity, as thin as possible, and at low cost.

【図面の簡単な説明】[Brief description of drawings]

【図1】この発明導光板装置の光源を一側縁に配置する
導光板単体の第1の実施例を示す横断側面図である。
FIG. 1 is a cross-sectional side view showing a first embodiment of a light guide plate alone in which a light source of the light guide plate device of the present invention is arranged at one side edge.

【図2】同じく、その投光面である表面の平面図であ
る。
FIG. 2 is likewise a plan view of a surface which is a light projecting surface thereof.

【図3】同じく、そのプリズム反射面である裏面の底面
図である。
FIG. 3 is a bottom view of the back surface that is the prism reflection surface of the same.

【図4】同じく、その要部の一部拡大断面図である。FIG. 4 is likewise a partially enlarged cross-sectional view of the relevant part.

【図5】同じく、その要部の一部拡大斜視図である。FIG. 5 is a partially enlarged perspective view of the main part of the same.

【図6】同じく、LEDの発光部が挿入する凹陥受光部
の形状の他の実施例を示す一部底面図である。
FIG. 6 is also a partial bottom view showing another embodiment of the shape of the recessed light receiving portion into which the light emitting portion of the LED is inserted.

【図7】光源が挿入される凹陥受光部を互いに向かい合
う両側縁に設けた導光板の第2の実施例を示す横断側面
図である。
FIG. 7 is a cross-sectional side view showing a second embodiment of a light guide plate in which concave light receiving portions into which light sources are inserted are provided on both side edges facing each other.

【図8】同じく、その投光面である表面の第2の実施例
を示す平面図である。
FIG. 8 is likewise a plan view showing a second embodiment of the surface which is the light projecting surface.

【図9】同じく、そのプリズム反射面である裏面の第2
の実施例を示す底面図である。
FIG. 9 is a second rear surface of the prism, which is a reflective surface of the prism.
It is a bottom view showing an example of.

【図10】導光板の投光面をプリズム投光面とした第3
の実施例を示す外観斜視図である。
FIG. 10 is a third structure in which the light projecting surface of the light guide plate is a prism projecting surface.
It is an external appearance perspective view which shows Example.

【図11】第1、第2および第3の実施例におけるプリ
ズム反射面を構成する筋溝プリズムのカットの拡大説明
図である。
FIG. 11 is an enlarged explanatory view of the cut of the groove prism forming the prism reflecting surface in the first, second and third embodiments.

【図12】第1、第2および第3の実施例におけるプリ
ズム反射面を構成する突条プリズムのカットの拡大説明
図である。
FIG. 12 is an enlarged explanatory view of the cut of the ridge prism constituting the prism reflecting surface in the first, second and third embodiments.

【図13】導光板の対応プリズム反射面の突条プリズム
のカットの拡大説明図である。
FIG. 13 is an enlarged explanatory diagram of the cut of the ridge prism on the corresponding prism reflection surface of the light guide plate.

【図14】冷陰極管と導光板の端面受光部の配置状況を
説明する拡大一部側面図である。
FIG. 14 is an enlarged partial side view for explaining how the cold cathode tubes and the end face light receiving portions of the light guide plate are arranged.

【符号の説明】[Explanation of symbols]

1 導光板 2a 一側縁 2b 他側縁 3 凹陥受光部 4 LED 5 投光マット面 6a 筋溝プリズム 6b 突条プリズム 7 プリズム反射面 8 突条プリズム 9 対応プリズム反射面 10 窓枠形反射幕 11 反射幕 12 導光板 13 導光板 14 筋溝プリズム 15 投光マット・プリズム面 16 冷陰極管 1 Light guide plate 2a One side edge 2b Other side edge 3 Recessed light receiving part 4 LED 5 Light emitting mat surface 6a Streak prism 6b Ridge prism 7 Prism reflection surface 8 Ridge prism 9 Corresponding prism reflection surface 10 Window frame type reflection screen 11 Reflection screen 12 Light guide plate 13 Light guide plate 14 Strip groove prism 15 Light emitting mat / prism surface 16 Cold cathode tube

Claims (6)

【特許請求の範囲】[Claims] 【請求項1】 透明プラスチック材を用いて平板に成型
される導光板の一側端面、複数側端面、一側縁寄りの表
面または裏面、複数側縁寄り表面または裏面において冷
陰極管、電球・LED等適宜発光体である光源を受光す
る受光部を設け、その導光板の投光面となる表面または
裏面を梨地模様の投光マット面に設け、その投光面と反
対面である表面または裏面を、角度、ピッチ、深さまた
は高さを可変、またはそれら角度、ピッチ、および深さ
または高さの内一を一定に、他の二を可変に構成して平
行な筋溝または突条のプリズム反射面に設け、導光板の
表面または裏面の投光面が均一の発光面となることを特
徴とする導光板装置。
1. A cold-cathode tube, a light bulb, on one end surface, a plurality of side end surfaces, a front surface or a back surface near one side edge, a front surface or a back surface near a plurality of side edges, which is formed into a flat plate using a transparent plastic material. A light receiving portion for receiving a light source which is an appropriate light emitting body such as an LED is provided, and a front surface or a back surface serving as a light projecting surface of the light guide plate is provided on a matte surface having a satin pattern, and a surface opposite to the light projecting surface or Angles, pitches, depths or heights of the back surface are variable, or one of the angles, pitches, and depths or heights is constant, and the other two are variable and parallel muscle grooves or ridges are formed. The light guide plate device, characterized in that it is provided on the prism reflection surface and the light projecting surface on the front surface or the back surface of the light guide plate becomes a uniform light emitting surface.
【請求項2】 導光板の一側縁寄りまたは複数側縁寄り
の表面もしくは裏面に冷陰極管、電球・LED等適宜発
光体である光源を受光する受光部を設け、その受光部に
対応する表面または裏面を、所要の角度、ピッチ、およ
び深さまたは高さを有する平行な筋溝または突条の対応
プリズム反射面に、所要幅設けてなることを特徴とする
請求項1記載の導光板装置。
2. A light receiving portion for receiving a light source, which is a light emitting body such as a cold cathode tube, a light bulb or an LED, is provided on a front surface or a back surface near one side edge or a plurality of side edges of the light guide plate, and corresponds to the light receiving section. 2. The light guide plate according to claim 1, wherein the front surface or the back surface is provided with a required width on a corresponding prism reflection surface of parallel groove or ridge having a required angle, pitch, and depth or height. apparatus.
【請求項3】 導光板の一側端面、複数側端面に冷陰極
管、電球・LED等適宜発光体である光源を受光する凹
陥受光部を設けてなることを特徴とする請求項1または
請求項2記載の導光板装置。
3. A light receiving plate having a concave light receiving portion for receiving a light source which is a light emitting body such as a cold cathode tube, a light bulb or an LED, is provided on one end surface or a plurality of side end surfaces of the light guide plate. Item 2. The light guide plate device according to item 2.
【請求項4】 導光板の一側縁寄りまたは複数側縁寄り
の表面もしくは裏面に冷陰極管、電球・LED等適宜発
光体である光源を受光する凹陥受光部を設けてなること
を特徴とする請求項1または請求項2記載の導光板装
置。
4. A concave light receiving portion for receiving a light source, which is a light emitting body such as a cold cathode tube, a light bulb or an LED, is provided on a front surface or a back surface near one side edge or a plurality of side edges of the light guide plate. The light guide plate device according to claim 1 or 2.
【請求項5】 導光板の一側縁寄りまたは複数側縁寄り
の表面もしくは裏面の凹陥受光部に対応する反対面の表
面または裏面を、所要の角度、ピッチ、および深さまた
は高さを有する平行な筋溝または突条の対応プリズム反
射面に、所要幅設けてなることを特徴とする請求項1、
請求項2または請求項3記載の導光板装置。
5. The front surface or the back surface of the light guide plate facing one side edge or a plurality of side edges facing the concave light receiving portion of the front surface or the back surface having a required angle, pitch, and depth or height. A corresponding prism reflecting surface having parallel streak grooves or ridges is provided with a required width.
The light guide plate device according to claim 2 or 3.
【請求項6】 導光板の投光面となる表面または裏面を
梨地模様の投光マット面に、反対面のプリズム反射面に
おける平行な筋溝または突条と所要角度で交差し、かつ
所要の角度、ピッチ、深さまたは高さを一定もしくは可
変、またはそれら角度、ピッチ、深さまたは高さの内一
を一定に、他の二を可変に構成する平行な筋溝または突
条の投光プリズム面を、設けてなることを特徴とする請
求項1または請求項2記載の導光板装置。
6. A light-transmitting surface of a light guide plate, the front surface or the back surface intersecting with a matte surface having a matte pattern at a required angle with parallel stripe grooves or ridges on the opposite prism reflecting surface, and Projection of parallel ridges or ridges that make the angle, pitch, depth or height constant or variable, or make one of the angles, pitch, depth or height constant and the other two variable. The light guide plate device according to claim 1, wherein a prism surface is provided.
JP26243895A 1995-09-14 1995-09-14 Light transmission plate device Pending JPH0981048A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP26243895A JPH0981048A (en) 1995-09-14 1995-09-14 Light transmission plate device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP26243895A JPH0981048A (en) 1995-09-14 1995-09-14 Light transmission plate device

Publications (1)

Publication Number Publication Date
JPH0981048A true JPH0981048A (en) 1997-03-28

Family

ID=17375798

Family Applications (1)

Application Number Title Priority Date Filing Date
JP26243895A Pending JPH0981048A (en) 1995-09-14 1995-09-14 Light transmission plate device

Country Status (1)

Country Link
JP (1) JPH0981048A (en)

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US6669350B2 (en) 2000-12-14 2003-12-30 Mitsubish Rayon Co., Ltd. Planar light source system and light deflecting device therefor
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JPH1115393A (en) * 1997-06-09 1999-01-22 Lumitex Inc Display panel assembly
JP2000194273A (en) * 1998-12-25 2000-07-14 Sanyo Electric Co Ltd Light guide plate and backlighting device
JP2001067915A (en) * 1999-08-25 2001-03-16 Hayashi Telempu Co Ltd Surface lighting system
JP2001166149A (en) * 1999-12-13 2001-06-22 Pioneer Electronic Corp Surface light source device and light transmission plate for the same
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US7014349B2 (en) 2000-02-28 2006-03-21 Omron Corporation Surface light source, method for manufacturing the same and apparatus using it
US6669350B2 (en) 2000-12-14 2003-12-30 Mitsubish Rayon Co., Ltd. Planar light source system and light deflecting device therefor
US7380969B2 (en) 2000-12-14 2008-06-03 Mitsubishi Rayon Co., Ltd. Planar light source system and light deflecting device therefor
US6854857B2 (en) 2002-06-11 2005-02-15 Fujitsu Limited Electronic apparatus, liquid crystal display device and light guide plate
JP2005353599A (en) * 2004-06-11 2005-12-22 Valeo Vision Vehicle lighting or signaling system with light guide
EP1780464A1 (en) * 2004-08-06 2007-05-02 Kuraray Co., Ltd. Light guide plate, production method therefor, and surface light source device provided with it
JPWO2006013969A1 (en) * 2004-08-06 2008-05-01 株式会社クラレ Light guide plate, method for manufacturing the same, and surface light source device including the same
WO2006013969A1 (en) * 2004-08-06 2006-02-09 Kuraray Co., Ltd. Light guide plate, production method therefor, and surface light source device provided with it
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US7883254B2 (en) 2004-08-06 2011-02-08 Kuraray Co., Ltd. Light guide plate, production method therefor, and surface light source device provided with it
JP4802094B2 (en) * 2004-08-06 2011-10-26 株式会社クラレ Light guide plate, method for manufacturing the same, and surface light source device including the same
KR100798680B1 (en) * 2005-11-10 2008-01-28 오완호 The luminous device using light emitting diodes
US7527411B2 (en) 2006-02-22 2009-05-05 Citizen Electronics Co., Ltd. Lightguide plate of a double-sided illumination backlight and a double-sided liquid crystal display unit using the backlight
JP2008004948A (en) * 2006-06-09 2008-01-10 Philips Lumileds Lightng Co Llc Low profile side emitting led
CN102086995A (en) * 2009-12-08 2011-06-08 乐金显示有限公司 Backlight unit and liquid crystal display device having the same
US8508693B2 (en) 2009-12-08 2013-08-13 Lg Display Co., Ltd. Backlight unit and liquid crystal display device having the same
WO2012050121A1 (en) * 2010-10-15 2012-04-19 シャープ株式会社 Backlight unit
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