JPH0886916A - Light transmission plate and forming method therefor - Google Patents
Light transmission plate and forming method thereforInfo
- Publication number
- JPH0886916A JPH0886916A JP6225120A JP22512094A JPH0886916A JP H0886916 A JPH0886916 A JP H0886916A JP 6225120 A JP6225120 A JP 6225120A JP 22512094 A JP22512094 A JP 22512094A JP H0886916 A JPH0886916 A JP H0886916A
- Authority
- JP
- Japan
- Prior art keywords
- light
- guide plate
- light guide
- illumination
- changed
- 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
- Liquid Crystal (AREA)
- Planar Illumination Modules (AREA)
- Light Guides In General And Applications Therefor (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は、オーディオ機器などの
電子機器のパネルの照明に係り、詳細には光源からの光
を導光体で導き効率よく照明用に用いることのできる照
明構造に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a panel of an electronic device such as an audio device, and more particularly to a lighting structure capable of efficiently guiding light from a light source with a light guide and using it for lighting.
【０００２】[0002]
【従来の技術】従来の照明構造を図面を用いて説明す
る。図７は従来の照明構造を示す図で、（ａ）は平面
図、（ｂ）はＨ−Ｈ断面図である。８０は導光板で、ラ
ンプ８５の光を採り入れ複数の照明箇所へ導光し、所望
の位置に光を取り出すためのもので、ランプ８５が入る
採光孔８１や光を取り出すための光反射部８２（導光板
８０の裏面側に設けられた方形の底部傾斜凹孔８３によ
り形成される）などが形成されている。尚、光反射部８
２の位置および角度は照明箇所の条件などにより設定さ
れる。導光板８０の材料には光の透過率が高く、しか
も、光の減衰率の低い透明アクリル樹脂材などが用いら
れ樹脂成形加工などにより形成される。2. Description of the Related Art A conventional lighting structure will be described with reference to the drawings. 7A and 7B are views showing a conventional illumination structure, FIG. 7A is a plan view, and FIG. 7B is a sectional view taken along line HH. Reference numeral 80 denotes a light guide plate for taking in the light of the lamp 85 and guiding it to a plurality of illuminating places to take out the light to a desired position. A light collecting hole 81 in which the lamp 85 is inserted and a light reflecting portion 82 for taking out the light. (Formed by a rectangular bottom inclined recessed hole 83 provided on the back surface side of the light guide plate 80) and the like. The light reflecting portion 8
The position and angle of No. 2 are set according to the conditions of the illumination location and the like. As the material of the light guide plate 80, a transparent acrylic resin material having a high light transmittance and a low light attenuation rate is used and is formed by resin molding.
【０００３】ランプ８５は照明用の光源となる白熱電球
で、用途により着色ガラスやゴム製の薄いカラーキャッ
プなどを用いて、発光色を着色し照明効果を上げること
もできる。パネル本体８６はオーディオ機器などの前面
意匠部品で、文字や記号などの表示部８７が形成されて
いる。そして、前記オーディオ機器の操作性をよくする
ために表示部８７を導光板８０で導いた光で照明し、夜
間などでも文字や記号を見やすくなるようにしている。
パネル本体８６の材料には、樹脂材が用いられ樹脂成形
加工により形成される。The lamp 85 is an incandescent lamp that serves as a light source for illumination, and depending on the application, a colored glass or a thin color cap made of rubber may be used to color the emission color to enhance the illumination effect. The panel body 86 is a front design component such as an audio device, and has a display portion 87 such as characters and symbols formed therein. Then, in order to improve the operability of the audio device, the display section 87 is illuminated by the light guided by the light guide plate 80 so that the characters and symbols can be easily seen even at night.
A resin material is used for the material of the panel body 86 and is formed by resin molding.
【０００４】動作について説明する。ランプ８５の光が
導光板８０の採光孔８１から導光板８０内に入光し、そ
の光が導光板８０内を伝わり、そして光の取り出し口と
なる光反射部８２により反射してパネル８６の表示部８
７方向に向かって導光板８０より出光する。尚、導光板
８０内部を伝達する光は、導光板８０の表面に対する入
射角が大きいため、略全反射されるので、平坦な部分か
らはあまり出光しない。The operation will be described. The light of the lamp 85 enters the light guide plate 80 through the light collecting hole 81 of the light guide plate 80, the light is transmitted through the light guide plate 80, and is reflected by the light reflecting portion 82 serving as a light extraction port. Display 8
Light is emitted from the light guide plate 80 in seven directions. Since the light transmitted inside the light guide plate 80 has a large incident angle with respect to the surface of the light guide plate 80, it is substantially totally reflected, so that it does not emerge much from the flat portion.
【０００５】[0005]
【発明が解決しようとする課題】しかし、上述の従来の
照明構造においては、導光板８０内に導光された光の取
り出し口の光反射部８２の反射面が同一面の傾斜部にな
っているため表示部８７の照明に強弱を設けたり、部分
的に光の反射方向を変え複数箇所の照明を行うなどのき
め細かい調整が難しい。また、試作段階から量産にいた
るまでの検討中に数回の変更が必要となる場合がある
が、成形金型の修正、変更が非常に困難で、最悪の場合
は成形金型の再製作につながることがある。However, in the above-described conventional illumination structure, the reflecting surface of the light reflecting portion 82 at the exit of the light guided in the light guide plate 80 is an inclined portion on the same plane. Therefore, it is difficult to make fine adjustments such as setting the intensity of the illumination of the display unit 87 or illuminating a plurality of places by partially changing the light reflection direction. In addition, it may be necessary to change several times during the examination from the prototype stage to mass production, but it is very difficult to correct and change the molding die, and in the worst case it is necessary to re-manufacture the molding die. May be connected.
【０００６】そこで、本発明は上述の問題を解決するも
ので、照明構造の照明効率を上げると共に、試作段階で
光反射部８２が容易に変更し易い導光板の成形方法を提
供することを目的とする。Therefore, the present invention solves the above-mentioned problems, and it is an object of the present invention to improve the illumination efficiency of an illumination structure and to provide a method for molding a light guide plate in which the light reflecting portion 82 can be easily changed at the trial production stage. And
【０００７】[0007]
【課題を解決するための手段】本発明は、上述の目的を
達成するもので、電子機器のパネルの表示部を、光源か
らの光を導き照明する導光板において、前記導光板内に
形成され、底部に傾斜面を有する複数の光反射凹部を設
け、前記光源からの光を前記光反射凹部の傾斜面にて前
記表示部に反射させるようにしたことを特徴とする。The present invention achieves the above-mentioned object. In a light guide plate for guiding and illuminating light from a light source, a display portion of a panel of an electronic device is formed in the light guide plate. A plurality of light-reflecting concave portions each having an inclined surface are provided at the bottom, and light from the light source is reflected by the inclined surface of the light-reflecting concave portions to the display unit.
【０００８】または、前記光反射凹部の断面積を変える
ことにより前記表示部の照明状態を変えられるようにし
たことを特徴とする。または、前記光反射凹部の深さを
変えることにより前記表示部の照度を変えられるように
したことを特徴とする。または、前記傾斜面の傾斜角度
を変えることにより前記表示部の照明範囲を変えられる
ようにしたことを特徴とする。Alternatively, the illumination state of the display section can be changed by changing the cross-sectional area of the light reflecting recess. Alternatively, the illuminance of the display unit can be changed by changing the depth of the light reflection recess. Alternatively, the illumination range of the display unit can be changed by changing the inclination angle of the inclined surface.
【０００９】または、前記傾斜面の傾斜方向を変えるこ
とにより前記表示部の照明位置を変えられるようにした
ことを特徴とする。または、前記導光体内に設けられた
第１光反射凹部と、前記第１光反射凹部の反射光を受け
前記表示部を照明する第２光反射凹部からなり、前記第
１光反射凹部により前記光源から第２光反射凹部への光
路を変更できるようにしたことを特徴とする。Alternatively, the illumination position of the display section can be changed by changing the inclination direction of the inclined surface. Alternatively, it comprises a first light-reflecting concave portion provided in the light guide body and a second light-reflecting concave portion for illuminating the display unit by receiving the reflected light of the first light-reflecting concave portion, and the first light-reflecting concave portion is used to It is characterized in that an optical path from the light source to the second light reflecting concave portion can be changed.
【００１０】または、前記導光板の本体部を成形する成
形金型本体部と、前記導光板の光反射凹部を成形する凹
部形成部材と、前記凹部形成部材を固定するために前記
成形金型本体部に設けられた固定部とを有する金型によ
り、前記導光板を成形することを特徴とする。Alternatively, a main body of a molding die for molding the main body of the light guide plate, a recess forming member for forming a light reflecting recess of the light guide plate, and the molding die main body for fixing the recess forming member. It is characterized in that the light guide plate is molded by a mold having a fixing portion provided in the portion.
【００１１】[0011]
【作用】本発明によれば、前記光源から導光板内に導光
された光が前記導光板内にそれぞれ独立して設けられた
複数の前記光反射凹部にて反射し、導光板から外へ出光
した光が前記表示部の複数箇所を照明する。第２の発明
によれば、前記光反射面の面積を変えることにより反射
光の光量が変わり、前記表示部の照明状態、特に照度、
照明範囲が変わる。According to the present invention, the light guided from the light source into the light guide plate is reflected by the plurality of light reflection recesses independently provided in the light guide plate, and is then emitted from the light guide plate to the outside. The emitted light illuminates a plurality of places on the display unit. According to the second invention, the light amount of the reflected light is changed by changing the area of the light reflecting surface, and the illumination state of the display unit, particularly the illuminance,
The lighting range changes.
【００１２】第３の発明によれば、前記光反射凹部の深
さを変えることにより前記光反射面と前記表示部との距
離が変わるので、前記表示部の照明状態、特に照度が変
わる。第４の発明によれば、前記傾斜面の傾斜角度を変
えることにより反射光の出射方向が変わり、前記表示部
の照明状態、特に照明範囲（位置）が変わる。According to the third invention, since the distance between the light reflecting surface and the display portion is changed by changing the depth of the light reflecting concave portion, the illumination state of the display portion, particularly the illuminance is changed. According to the fourth aspect, the emission direction of the reflected light is changed by changing the inclination angle of the inclined surface, and the illumination state of the display unit, particularly the illumination range (position) is changed.
【００１３】第５の発明によれば、前記傾斜面の傾斜方
向を変えることにより反射光の出射方向が変わり、前記
表示部の照明状態、特に照明位置が変わる。第６の発明
によれば、前記導光板内に設けられた第１光反射部の位
置および光反射面の反射角度を変えると、前記導光板内
に導光された光が第１光反射部に反射して光路が変わる
ので、もし前記光源と第２光反射部の間に導光障害物が
あっても回避して第２光反射部に導光される。According to the fifth aspect, the emission direction of the reflected light is changed by changing the inclination direction of the inclined surface, and the illumination state of the display section, particularly the illumination position is changed. According to the sixth invention, when the position of the first light reflecting portion provided in the light guide plate and the reflection angle of the light reflecting surface are changed, the light guided in the light guide plate is changed to the first light reflecting portion. Since the optical path is changed by being reflected by the light source, even if there is a light guiding obstacle between the light source and the second light reflecting portion, it is avoided and the light is guided to the second light reflecting portion.
【００１４】第７の発明によれば、前記成形金型本体部
に設けられた前記光反射凹部を成形する凹部形成部材を
回転または上下させることにより、前記導光板の光反射
凹部の傾斜方向または深さを容易に変えることができる
ので、光の反射効率の良い前記導光板を成形することが
できる。According to the seventh aspect of the invention, by rotating or vertically moving the recess forming member for forming the light reflecting recess provided in the molding die main body, the inclination direction of the light reflecting recess of the light guide plate or Since the depth can be easily changed, the light guide plate having good light reflection efficiency can be formed.
【００１５】[0015]
【実施例】本発明の実施例を図面により説明する。本発
明の第１実施例を図１により説明する。図１は照明構造
を示す図で、（ａ）は平面図、（ｂ）はＡ−Ａ断面図で
ある。１１は導光板で、ランプ２０の光を採り入れ複数
の照明箇所へ導光し、所望の位置に光を取り出すための
もので、ランプ２０が入る採光孔１２や光を取り出すた
めの光反射部１３、１５（導光板１１の裏面側に設けら
れた底部傾斜凹穴１４、１６によりそれぞれ独立して形
成される）などが形成されている。そして、底部傾斜凹
穴１４、１６の深さは表示部２２が均一の明るさで照明
されるようにランプ２０から離れた方が深く形成されて
いる。尚、光反射部１３、１５の位置、傾斜角度および
数量は照明箇所の条件などにより設定される。導光板１
１の材料には光の透過率が高く、しかも、光の減衰率の
低い透明アクリル樹脂材などが用いられ樹脂成形加工な
どにより形成される。Embodiments of the present invention will be described with reference to the drawings. A first embodiment of the present invention will be described with reference to FIG. 1A and 1B are views showing an illumination structure. FIG. 1A is a plan view and FIG. 1B is a sectional view taken along line AA. Reference numeral 11 denotes a light guide plate for taking in the light of the lamp 20 and guiding it to a plurality of illuminating places to take out the light to a desired position. A light collecting hole 12 into which the lamp 20 enters and a light reflecting portion 13 for taking out the light. , 15 (independently formed by the bottom inclined concave holes 14 and 16 provided on the back surface side of the light guide plate 11) and the like. The depth of the bottom inclined recessed holes 14 and 16 is formed deeper away from the lamp 20 so that the display unit 22 is illuminated with uniform brightness. The position, the inclination angle, and the number of the light reflecting portions 13 and 15 are set according to the conditions of the illuminated place. Light guide plate 1
The first material is a transparent acrylic resin material having a high light transmittance and a low light attenuation rate, and is formed by resin molding.
【００１６】ランプ２０は照明用の光源となる白熱電球
で、用途により着色ガラスやゴム製の薄いカラーキャッ
プなどを用いて、発光色を着色し照明効果を上げること
もできる。パネル２１はオーディオ機器などの前面意匠
部品で、文字や記号などの表示部２２が形成されてい
る。そして、前記オーディオ機器の操作性をよくするた
めに表示部２２を照明し、夜間などでも文字や記号を見
やすくなるようにしている。パネル２１の材料には、樹
脂材が用いられ樹脂成形加工により形成される。The lamp 20 is an incandescent light bulb that serves as a light source for illumination, and depending on the application, a colored glass or a thin color cap made of rubber may be used to color the emission color to enhance the illumination effect. The panel 21 is a front design component such as an audio device, and has a display portion 22 such as characters and symbols formed therein. The display unit 22 is illuminated to improve the operability of the audio device so that characters and symbols can be easily seen even at night. A resin material is used for the material of the panel 21, and is formed by resin molding.
【００１７】次に、動作を説明する。ランプ２０の光が
導光板１１の採光孔１２から導光板１１内に入光し、そ
の光が導光板１１内を伝わり、光の取り出し口となる光
反射部１３、１５にて反射し導光板１１内から外へ出光
する。そして、パネル２１の表示部２２を照明する。以
上説明したように、本実施例によれば、光反射部１３、
１５がそれぞれ独立的に形成されているため、各光反射
部１３、１５の形状（底部傾斜凹部１４、１６の深さ）
の変更により、表示部２２の微妙な照明調整が可能とな
る。尚、本実施例では光反射部１３、１５の形状を独立
した円柱形を複数個形成したが、これにこだわることは
なく独立した角柱状などにしてもよい。Next, the operation will be described. The light of the lamp 20 enters the light guide plate 11 through the light collection hole 12 of the light guide plate 11, the light is transmitted through the light guide plate 11, and is reflected by the light reflecting portions 13 and 15 which are light extraction ports. 11 Light is emitted from inside. Then, the display unit 22 of the panel 21 is illuminated. As described above, according to this embodiment, the light reflecting portion 13,
Since 15 are formed independently of each other, the shape of each of the light reflecting portions 13 and 15 (the depth of the bottom inclined recessed portions 14 and 16)
With the change of, it is possible to finely adjust the illumination of the display unit 22. In the present embodiment, the light reflecting portions 13 and 15 are formed in a plurality of independent cylindrical shapes, but they may be formed into independent prismatic shapes without being particular to this.
【００１８】次に本発明の第２実施例を図２により説明
する。図２は照明構造を示す図で、（ａ）は平面図、
（ｂ）はＢ−Ｂ断面図である。尚、本実施例は第１実施
例の光反射部１３、１５の構造を変更したもので、その
他については第１実施例と略同じであるので、第１実施
例の構成と同じ構成には同じ符号を付しその説明を省略
する。また、動作も第１実施例と略同じであるので説明
を省略する。Next, a second embodiment of the present invention will be described with reference to FIG. FIG. 2 is a view showing an illumination structure, (a) is a plan view,
(B) is BB sectional drawing. In this embodiment, the structure of the light reflecting portions 13 and 15 of the first embodiment is modified, and other points are substantially the same as those of the first embodiment. The same reference numerals are given and the description thereof is omitted. Further, the operation is also substantially the same as that of the first embodiment, so that the description will be omitted.
【００１９】２４は導光板で、ランプ２０が入る採光孔
２５や光を取り出すための光反射部２６、２８（導光板
２４の裏面側に設けられた底部傾斜凹穴２７、２９によ
りそれぞれ独立して形成される）などが形成されてい
る。そして、底部傾斜凹穴２７、２９の断面積、深さ、
底部の傾斜角度は異なっている。尚、光反射部２６、２
８の位置、大きさ、傾斜角度および数量は照明箇所の条
件などにより設定される。Reference numeral 24 denotes a light guide plate, which is independent of a light collection hole 25 into which the lamp 20 enters and light reflecting portions 26 and 28 for extracting light (inclined bottom recessed holes 27 and 29 provided on the back surface side of the light guide plate 24, respectively. Are formed). Then, the cross-sectional area and depth of the bottom inclined recessed holes 27 and 29,
The angle of inclination of the bottom is different. The light reflecting portions 26, 2
The position, size, inclination angle, and quantity of 8 are set according to the conditions of the illumination location.
【００２０】以上説明したように、本実施例において
も、第１実施例と同じ効果を得ることができる。さら
に、光反射部２６、２８の位置、大きさ、傾斜角度およ
び数量などをそれぞれ独立して変えることにより、きめ
細かな照明が可能となる。従って、より照明効果を上げ
ることができる。次に本発明の第３実施例を図３により
説明する。As described above, also in this embodiment, the same effect as that of the first embodiment can be obtained. Further, by changing the position, size, inclination angle, quantity, etc. of the light reflecting portions 26 and 28 independently, fine illumination becomes possible. Therefore, the lighting effect can be further improved. Next, a third embodiment of the present invention will be described with reference to FIG.
【００２１】図３は照明構造を示す図で、（ａ）は平面
図、（ｂ）はＣ−Ｃ断面図、（ｃ）はＤ−Ｄ断面図であ
る。尚、本実施例は第１実施例の光反射部１３の構造を
変更したもので、その他については第１実施例と略同じ
であるので、第１実施例の構成と同じ構成には同じ符号
を付しその説明を省略する。また、動作も第１実施例と
略同じであるので説明を省略する。3A and 3B are views showing an illumination structure. FIG. 3A is a plan view, FIG. 3B is a sectional view taken along line CC, and FIG. 3C is a sectional view taken along line DD. In this embodiment, the structure of the light reflecting portion 13 of the first embodiment is modified, and other parts are substantially the same as those of the first embodiment. Therefore, the same components as those of the first embodiment are designated by the same reference numerals. Is attached and its description is omitted. Further, the operation is also substantially the same as that of the first embodiment, so that the description will be omitted.
【００２２】３０は導光板で、光反射部３２の光反射面
に対し光反射部３４の光反射面を略９０度回転させて光
の反射位置に差異を持たせたもので、その他については
第１実施例の導光板１１と略同じである。以上説明した
ように、本実施例においても、第１実施例と同じ効果を
得ることができる。さらに、光反射部３２、３４の光反
射面の方向、位置、大きさ、傾斜角度および数量などを
変えることにより導光板３０からの光の出射位置、方向
を変えることができるので、よりきめ細かな照明が可能
となる。従って、より照明効果を上げることができる。Reference numeral 30 denotes a light guide plate, which is formed by rotating the light reflecting surface of the light reflecting portion 34 by about 90 degrees with respect to the light reflecting surface of the light reflecting portion 32 to give a different light reflecting position. It is substantially the same as the light guide plate 11 of the first embodiment. As described above, also in this embodiment, the same effect as that of the first embodiment can be obtained. Furthermore, by changing the direction, position, size, inclination angle, quantity, etc. of the light reflecting surfaces of the light reflecting portions 32, 34, it is possible to change the light emitting position and direction of the light from the light guide plate 30, so that it is more detailed. Lighting is possible. Therefore, the lighting effect can be further improved.
【００２３】尚、本実施例では光反射面を互いに９０度
回転させた状態としたが、９０度に限らず互いに独立し
て所望の方向に向ければよい。次に本発明の第４実施例
を図４により説明する。図４は照明構造を示す図で、
（ａ）は平面図、（ｂ）はＥ−Ｅ断面図、（ｃ）はＦ−
Ｆ断面図である。尚、本実施例は第１実施例の光反射部
１３の構造を変更したもので、その他については第１実
施例と略同じであるので、第１実施例の構成と同じ構成
には同じ符号を付しその説明を省略する。In this embodiment, the light reflecting surfaces are rotated by 90 degrees with respect to each other, but the light reflecting surfaces are not limited to 90 degrees and may be oriented in a desired direction independently of each other. Next, a fourth embodiment of the present invention will be described with reference to FIG. FIG. 4 is a diagram showing a lighting structure,
(A) is a plan view, (b) is a sectional view taken along line EE, and (c) is F-.
FIG. In this embodiment, the structure of the light reflecting portion 13 of the first embodiment is modified, and other parts are substantially the same as those of the first embodiment. Therefore, the same components as those of the first embodiment are designated by the same reference numerals. Is attached and its description is omitted.
【００２４】４０は導光板で、ランプ２０が入る採光孔
４１やランプ２０から導光された光の光路を変える第１
光反射部４２（導光板４０裏面側に設けられた傾斜凹孔
４３により形成される）と光を取り出し表示部２２を照
明すための第２光反射部４４、４６（導光板４０の裏面
側に設けられた底部傾斜凹穴４５、４７によりそれぞれ
独立して形成される）などが形成されている。尚、第１
光反射部４２はランプ２０から導光された光の光路の障
害となる箇所、例えば孔４８などがある場合には光が直
接第２光反射部４４、４６に届きにくいので光路を変え
るために設けられるもので、障害物との関係で位置、大
きさ、角度などが設定される。また、第２光反射部４
４、４６の位置、大きさ、傾斜角度および数量は照明箇
所の条件などにより設定される。Reference numeral 40 denotes a light guide plate, which changes the optical path of light guided from the lamp 20 and the lighting hole 41 into which the lamp 20 is inserted.
A light reflecting portion 42 (formed by an inclined concave hole 43 provided on the back surface side of the light guide plate 40) and second light reflecting portions 44 and 46 for extracting light and illuminating the display portion 22 (back surface side of the light guide plate 40). Are formed independently of each other by the bottom inclined recessed holes 45 and 47 provided in the above. The first
In order to change the optical path of the light reflecting portion 42, it is difficult for the light to directly reach the second light reflecting portions 44 and 46 when there is an obstacle, such as a hole 48, in the optical path of the light guided from the lamp 20. It is provided, and the position, size, angle, etc. are set in relation to the obstacle. In addition, the second light reflector 4
The positions, sizes, inclination angles, and the numbers of Nos. 4 and 46 are set according to the conditions of the illumination location and the like.
【００２５】次に動作を説明する。ランプ２０の光が導
光板４０の採光孔４１から導光板４０内に入光した光が
導光板４０内を伝わり、第１光反射部４２にて反射し光
路を変え光の取り出し口となる第２光反射部４４、４６
にて反射し、導光板４０内から外へ出光する。そして、
パネル２１の表示部２２を照明する。Next, the operation will be described. The light of the lamp 20 entering the light guide plate 40 from the light collecting hole 41 of the light guide plate 40 is transmitted through the light guide plate 40, is reflected by the first light reflecting portion 42, changes the optical path, and serves as a light extraction port. 2 light reflecting portions 44, 46
And is emitted from the inside of the light guide plate 40 to the outside. And
The display unit 22 of the panel 21 is illuminated.
【００２６】以上説明したように、本実施例によれば、
導光板４０内に光路を変える第１光反射部４２を設けた
ことにより、光の光路の障害となる孔４８などの影響を
受けることなく第２光反射部４４、４６の照明効率を上
げることができる。次に本発明の第５実施例を図５によ
り説明する。図５は照明構造を示す図で、（ａ）は平面
図、（ｂ）はＧ−Ｇ断面図である。尚、本実施例は第１
実施例の光反射部１３の構造を変更したもので、その他
については第１実施例と略同じであるので、第１実施例
の構成と同じ構成には同じ符号を付しその説明を省略す
る。As described above, according to this embodiment,
By providing the first light reflecting portion 42 that changes the optical path in the light guide plate 40, it is possible to improve the illumination efficiency of the second light reflecting portions 44 and 46 without being affected by the holes 48 that obstruct the light optical path. You can Next, a fifth embodiment of the present invention will be described with reference to FIG. 5A and 5B are views showing an illumination structure, FIG. 5A is a plan view, and FIG. 5B is a GG sectional view. The first embodiment is the first
Since the structure of the light reflecting portion 13 of the embodiment is modified and the other parts are substantially the same as those of the first embodiment, the same components as those of the first embodiment are designated by the same reference numerals and the description thereof will be omitted. .
【００２７】５０は導光板で、ランプ２０の光を採り入
れ複数の照明箇所へ導光し、所望の位置に光を取り出す
ためのもので、ランプ２０が入る採光孔５１や光を取り
出すための第３光反射部５２（導光板５０の裏面側に設
けられた方形の底部傾斜凹穴５３により形成される）と
第３光反射部５２の反射面より突出した第４光反射部５
４、５６（第３光反射部５２の裏面側に設けられた底部
傾斜凹穴５５、５７によりそれぞれ独立して形成され
る）などが形成されている。Reference numeral 50 denotes a light guide plate for taking in the light of the lamp 20 and guiding it to a plurality of illuminating points to take out the light to a desired position. The lighting hole 51 into which the lamp 20 enters and the first for taking out the light. A third light reflecting portion 52 (formed by a rectangular bottom inclined concave hole 53 provided on the back surface side of the light guide plate 50) and a fourth light reflecting portion 5 protruding from the reflecting surface of the third light reflecting portion 52.
4, 56 (independently formed by the bottom inclined recessed holes 55, 57 provided on the back surface side of the third light reflecting portion 52) and the like are formed.
【００２８】次に動作を説明する。ランプ２０の光が導
光板５０の採光孔５１から導光板５０内に入光し、その
光が導光板５０内を伝わり、光の取り出し口となる第３
光反射部５２と第４光反射部５４、５６にて反射して導
光板５０内から外へ出光する。そして、パネル２１の表
示部２２を照明する。Next, the operation will be described. The light of the lamp 20 enters the light guide plate 50 from the light collecting hole 51 of the light guide plate 50, the light is transmitted through the light guide plate 50, and serves as a light extraction port.
The light is reflected from the light reflecting portion 52 and the fourth light reflecting portions 54 and 56 and emitted from the inside of the light guide plate 50 to the outside. Then, the display unit 22 of the panel 21 is illuminated.
【００２９】以上説明したように、本実施例によれば、
第３光反射部５２で表示部２２の全体をまた第４光反射
部５４、５６にて部分的な照明が可能となるので、表示
部２２の微妙な照明調整が可能となり照明品質が向上す
る。次に本発明の第６実施例を図６により説明する。図
６は前記導光板の樹脂成形金型の要部（キャビティ、コ
ア部）の型締め状態を示す断面図である。As described above, according to the present embodiment,
Since it is possible to illuminate the entire display unit 22 by the third light reflecting unit 52 and partially illuminate the fourth light reflecting units 54 and 56, it is possible to finely adjust the illumination of the display unit 22 and improve the illumination quality. . Next, a sixth embodiment of the present invention will be described with reference to FIG. FIG. 6 is a cross-sectional view showing a clamped state of a main part (cavity, core part) of the resin molding die of the light guide plate.
【００３０】６０はキャビティで、導光板となる樹脂の
充填部６１（導光板の外形形状）が形成されている。６
２はコア本体で、光反射凹部を成形する凹部形成部材６
５および採光孔形成部材６８の挿入孔６３、６４が形成
されている。尚、挿入孔６３は凹部形成部材６５を挿入
後に調整できるように凹部形成部材６５より僅かに大き
な孔とする。凹部形成部材６５は円柱状をしており先端
部には光の反射部となる傾斜部６６がまた他方にはコア
本体６２に取り付けるねじ穴６７などが形成されてい
る。A cavity 60 is provided with a resin filling portion 61 (outer shape of the light guide plate) which serves as a light guide plate. 6
Reference numeral 2 is a core body, which is a recess forming member 6 for forming a light reflecting recess.
5 and the insertion holes 63 and 64 of the lighting hole forming member 68 are formed. The insertion hole 63 is slightly larger than the recess forming member 65 so that it can be adjusted after the recess forming member 65 is inserted. The recess forming member 65 has a columnar shape, and an inclined portion 66 which serves as a light reflecting portion is formed at the tip end thereof, and a screw hole 67 or the like for attaching to the core body 62 is formed on the other end.
【００３１】６９はスペーサで、ワッシャ状をなし凹部
形成部材６５の下部に設けられ、スペーサ６９の厚みを
調整することにより凹部形成部材６５の突出量を変え、
光反射凹部の深さを容易に変えることができる。次に凹
部形成部材６５の組付けを説明する。先ず、コア本体６
２の挿入孔６３とバックプレート７１の孔７２の位置を
合わせねじなどで固定する。そして、挿入孔６３にスペ
ーサ６９を挿入し次に凹部形成部材６５のねじ形成部を
図面下方にして挿入する。この際凹部形成部材６５の傾
斜部６６の高さと向きを決める必要がある。そこで、傾
斜部６６の高さを決めるにはスペーサ６９の厚みを調整
し、傾斜部６６の向きを決めるには凹部形成部材６５を
回転させて光の反射状態が最も良い位置になるようにね
じ７３によりコア本体６２に固定する。Reference numeral 69 denotes a spacer, which is provided in a lower portion of the recess forming member 65 and has a washer shape, and the protrusion amount of the recess forming member 65 is changed by adjusting the thickness of the spacer 69.
The depth of the light reflecting recess can be easily changed. Next, the assembling of the recess forming member 65 will be described. First, the core body 6
The positions of the second insertion hole 63 and the hole 72 of the back plate 71 are aligned and fixed with screws or the like. Then, the spacer 69 is inserted into the insertion hole 63, and then the screw forming portion of the recess forming member 65 is inserted downward in the drawing. At this time, it is necessary to determine the height and direction of the inclined portion 66 of the recess forming member 65. Therefore, in order to determine the height of the inclined portion 66, the thickness of the spacer 69 is adjusted, and in order to determine the direction of the inclined portion 66, the recess forming member 65 is rotated so that the light reflection state becomes the best position. It is fixed to the core body 62 by 73.
【００３２】次に、採光孔形成部材６８を挿入孔６４に
挿入しねじ７３によりコア本体６２に固定する。この際
キャビティ６０とコア本体６２のパーティングライン７
５が密着状態（型締め状態の時）の時に採光孔形成部材
６８の上面７４とキャビティ６０の底面７６が密着する
ように採光孔形成部材６８の高さを調整する。尚、光の
反射状態は樹脂成形金型を組立後該金型で導光板を成形
し、実際の使用状態で照明効率が最もよくなるように調
整を繰り返し行う。Next, the lighting hole forming member 68 is inserted into the insertion hole 64 and fixed to the core body 62 with the screw 73. At this time, the parting line 7 between the cavity 60 and the core body 62
The height of the daylighting hole forming member 68 is adjusted so that the upper surface 74 of the daylighting hole forming member 68 and the bottom surface 76 of the cavity 60 come into close contact with each other when 5 is in a close contact state (when the mold is clamped). The light reflection state is adjusted by assembling a resin molding die, molding the light guide plate with the die, and repeating the adjustment so that the illumination efficiency is maximized in the actual use state.
【００３３】以上説明したように、本実施例によれば、
前記成形金型のコア本体６２に設けられた前記光反射凹
部を成形する凹部形成部材６５を回転または上下させる
ことにより、前記導光板の光反射凹部の傾斜方向または
深さを容易に変えることができるので、光反射凹部の微
調整が可能となる。従って、本成形金型を用いて成形す
ることにより反射効率の良い前記導光板を成形すること
ができる。As described above, according to this embodiment,
By rotating or vertically moving the recess forming member 65 for forming the light reflecting recess provided in the core body 62 of the molding die, the inclination direction or the depth of the light reflecting recess of the light guide plate can be easily changed. Therefore, it is possible to finely adjust the light reflection concave portion. Therefore, the light guide plate having good reflection efficiency can be formed by using the main forming die.
【００３４】尚、本実施例においては凹部形成部材６５
を断面円形としたが、それ以外の形状として上下、回転
が可能な形状、即ち断面正多角形が好ましく、また凹部
形成部材６５の種類は多くなるものの断面円形、あるい
は断面正多角形以外の形状でもかまわない。In this embodiment, the recess forming member 65 is used.
Although the cross section has a circular cross section, a shape that can be rotated up and down, that is, a regular polygonal cross section is preferable as the other shape, and a circular cross section or a shape other than a regular polygonal cross section although the number of types of the recess forming member 65 increases. But it doesn't matter.
【００３５】[0035]
【発明の効果】以上説明したように、本発明の照明構造
によれば、導光体内に導光された光の取り出し口の光反
射部が複数個の集合体となっているので、それぞれの大
きさ、反射角度、反射方向、数量などを変えることが容
易になる。従って、表示部の照明に強弱を設けたり、部
分的に光の反射方向を変え複数箇所の照明を行うなどき
め細かい調整が可能となる。また、照明構造（導光体）
の試作段階から量産にいたるまでの検討に際し、成形金
型の修正、変更が非常に容易になるので、製品開発期間
の短縮および金型設備費の節減などが図れる。As described above, according to the illumination structure of the present invention, since the light reflecting portions of the outlet for the light guided in the light guide body are a plurality of aggregates, each of them is It becomes easy to change the size, reflection angle, reflection direction, quantity, etc. Therefore, it is possible to make fine adjustments such as setting the intensity of the illumination of the display portion or partially changing the light reflection direction to illuminate a plurality of locations. Also, lighting structure (light guide)
During the examination from the trial production stage to the mass production, it is very easy to correct and change the molding die, so that it is possible to shorten the product development period and reduce the die equipment cost.
【図面の簡単な説明】[Brief description of drawings]
【図１】本発明の第１実施例の照明構造を示す図で、
（ａ）は平面図、（ｂ）はＡ−Ａ断面図である。FIG. 1 is a diagram showing a lighting structure according to a first embodiment of the present invention,
(A) is a top view and (b) is an AA sectional view.
【図２】本発明の第２実施例の照明構造を示す図で、
（ａ）は平面図、（ｂ）はＢ−Ｂ断面図である。FIG. 2 is a diagram showing a lighting structure of a second embodiment of the present invention,
(A) is a top view and (b) is a BB sectional view.
【図３】本発明の第３実施例の照明構造を示す図で、
（ａ）は平面図、（ｂ）はＣ−Ｃ断面図、（ｃ）はＤ−
Ｄ断面図である。FIG. 3 is a diagram showing a lighting structure according to a third embodiment of the present invention,
(A) is a plan view, (b) is a C-C sectional view, (c) is a D-
It is a D sectional view.
【図４】本発明の第４実施例の照明構造を示す図で、
（ａ）は平面図、（ｂ）はＥ−Ｅ断面図、（ｃ）はＦ−
Ｆ断面図である。FIG. 4 is a diagram showing a lighting structure of a fourth embodiment of the present invention,
(A) is a plan view, (b) is a sectional view taken along line EE, and (c) is F-.
FIG.
【図５】本発明の第５実施例の照明構造を示す図で、
（ａ）は平面図、（ｂ）はＧ−Ｇ断面図である。FIG. 5 is a view showing a lighting structure of a fifth embodiment of the present invention,
(A) is a plan view and (b) is a GG sectional view.
【図６】本発明の第６実施例の導光板の樹脂成形金型の
要部の型締め状態を示す断面図である。FIG. 6 is a cross-sectional view showing a clamped state of a main part of a resin molding die of a light guide plate according to a sixth embodiment of the present invention.
【図７】従来の照明構造を示す図で、（ａ）は平面図、
（ｂ）はＨ−Ｈ断面図である。FIG. 7 is a view showing a conventional illumination structure, (a) is a plan view,
(B) is a HH sectional view.
１１、２４、３０、４０、５０・・・・・導光板 １２、２５、３１、４１、５１・・・・・採光孔 １３、１５、２６、２８、３２、３４・・光反射部 ２０・・・・・ランプ ２１・・・・・パネル ２２・・・・・表示部 ４２・・・・・第１光反射部 ４４、４６・・第２光反射部 ５２・・・・・第３光反射部 ５４、５６・・第４光反射部 ６０・・・・・キャビティ ６１・・・・・樹脂充填部 ６２・・・・・コア本体 ６５・・・・・凹部形成部材 ６８・・・・・採光孔形成部材 ６９・・・・・スペーサ ７１・・・・・バックプレート ７５・・・・・パーティングライン 11, 24, 30, 40, 50 ... Light guide plate 12, 25, 31, 41, 51 ... Light collecting hole 13, 15, 26, 28, 32, 34 ... Light reflecting portion 20. .... lamp 21 ... panel 22 ... display section 42 ... first light reflecting section 44, 46 ... second light reflecting section 52 ... third light Reflecting portion 54, 56 ... Fourth light reflecting portion 60 ... Cavity 61 ... Resin filling portion 62 ... Core body 65 ... Recess forming member 68 ... -Lighting hole forming member 69-Spacer 71-Back plate 75-Parting line
Claims (7)
の光を導き照明する導光板において、 前記導光板内に
形成され、底部に傾斜面を有する複数の光反射凹部を設
け、 前記光源からの光を前記光反射凹部の傾斜面にて前記表
示部に反射させるようにしたことを特徴とする導光板。1. A light guide plate for guiding and illuminating light from a light source for a display part of a panel of an electronic device, wherein a plurality of light reflection concave portions formed in the light guide plate and having an inclined surface at a bottom are provided. The light guide plate is characterized in that light from the above is reflected on the display portion by the inclined surface of the light reflection concave portion.
より前記表示部の照明状態を変えられるようにしたこと
を特徴とする請求項１記載の導光板。2. The light guide plate according to claim 1, wherein the illumination state of the display section can be changed by changing the cross-sectional area of the light reflecting recess.
り前記表示部の照度を変えられるようにしたことを特徴
とする請求項１記載の導光板。3. The light guide plate according to claim 1, wherein the illuminance of the display unit can be changed by changing the depth of the light reflection recess.
り前記表示部の照明範囲を変えられるようにしたことを
特徴とする請求項１記載の導光板。4. The light guide plate according to claim 1, wherein an illumination range of the display unit can be changed by changing an inclination angle of the inclined surface.
り前記表示部の照明位置を変えられるようにしたことを
特徴とする請求項１記載の導光板。5. The light guide plate according to claim 1, wherein the illumination position of the display section can be changed by changing the inclination direction of the inclined surface.
部と、 前記第１光反射凹部の反射光を受け前記表示部を照明す
る第２光反射凹部からなり、 前記第１光反射凹部により前記光源から第２光反射凹部
への光路を変更できるようにしたことを特徴とする請求
項１記載の導光板。6. A first light-reflecting recess provided in the light guide, and a second light-reflecting recess for illuminating the display unit by receiving reflected light from the first light-reflecting recess. The light guide plate according to claim 1, wherein an optical path from the light source to the second light reflection concave portion can be changed by the concave portion.
本体部と、 前記導光板の光反射凹部を成形する凹部形成部材と、 前記凹部形成部材を固定するために前記成形金型本体部
に設けられた固定部とを有する金型により、 前記導光板を成形することを特徴とする導光板の成形方
法。7. A molding die body for molding a body of the light guide plate, a recess forming member for molding a light reflecting recess of the light guide plate, and a molding die body for fixing the recess forming member. A method of molding a light guide plate, characterized in that the light guide plate is molded by a mold having a fixing portion provided in the portion.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6225120A JPH0886916A (en) | 1994-09-20 | 1994-09-20 | Light transmission plate and forming method therefor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6225120A JPH0886916A (en) | 1994-09-20 | 1994-09-20 | Light transmission plate and forming method therefor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0886916A true JPH0886916A (en) | 1996-04-02 |
Family
ID=16824284
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP6225120A Pending JPH0886916A (en) | 1994-09-20 | 1994-09-20 | Light transmission plate and forming method therefor |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0886916A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100313246B1 (en) * | 1999-11-26 | 2001-11-07 | 구본준, 론 위라하디락사 | Apparatus of Fabricating Light Guide and Method thereof |
| US9579871B2 (en) | 2013-11-01 | 2017-02-28 | Solutia Inc. | High flow polymer interlayers for laminated glass |
-
1994
- 1994-09-20 JP JP6225120A patent/JPH0886916A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100313246B1 (en) * | 1999-11-26 | 2001-11-07 | 구본준, 론 위라하디락사 | Apparatus of Fabricating Light Guide and Method thereof |
| US9579871B2 (en) | 2013-11-01 | 2017-02-28 | Solutia Inc. | High flow polymer interlayers for laminated glass |
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| A02 | Decision of refusal |
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