JPH0695441B2 - Lighting equipment - Google Patents
Lighting equipmentInfo
- Publication number
- JPH0695441B2 JPH0695441B2 JP1162632A JP16263289A JPH0695441B2 JP H0695441 B2 JPH0695441 B2 JP H0695441B2 JP 1162632 A JP1162632 A JP 1162632A JP 16263289 A JP16263289 A JP 16263289A JP H0695441 B2 JPH0695441 B2 JP H0695441B2
- Authority
- JP
- Japan
- Prior art keywords
- light
- guide plate
- light guide
- emitting
- emitting body
- 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.)
- Expired - Lifetime
Links
Description
【発明の詳細な説明】 ［産業上の利用分野］ 本発明は、中型の規模の照明装置であり特に発光面全体
が均一な発光を行う照明装置に関する。TECHNICAL FIELD The present invention relates to a lighting device of a medium size, and more particularly to a lighting device that emits light uniformly over the entire light emitting surface.
［従来の技術］ 照明装置には、面発光するものがある。この面発光タイ
プのものは発光面全体が均一に発光することが望まし
い。[Prior Art] Some lighting devices emit surface light. In this surface emitting type, it is desirable that the entire light emitting surface emits light uniformly.
そして、面発光タイプのものにも発光源が面部の一側部
に設けられたものがある。Further, there is a surface emitting type in which a light emitting source is provided on one side of the surface portion.
［発明が解決しようとする課題］ この発光源が発光面の一側部に設けられた照明装置は、
発光源の保守が容易である利点を有する反面、発光源か
ら離れるにつれ照度が低くなる欠点を有していた。[Problems to be Solved by the Invention] A lighting device in which this light emitting source is provided on one side of a light emitting surface is
While it has the advantage that the light emitting source is easy to maintain, it has the drawback that the illuminance decreases as the distance from the light emitting source increases.
本発明は、上記問題点を解消するためになされたもので
あり、発光面が均一な照度で発光することができる照明
装置を提供することを目的としている。The present invention has been made to solve the above problems, and an object of the present invention is to provide an illuminating device capable of emitting light with a uniform illuminance on its light emitting surface.
［課題を解決するための手段］ 上記目的を達成するため本発明の照明装置は、内部を光
が透過自在であり、下面側には凹凸2aが設けられて上面
を発光面とする平面状の表面導光板２と、 該表面導光板２の下部に設けられ内部を光が透過自在な
裏面導光板３と、 前記表面導光板２および裏面導光板３の一側部に設けら
れ、各導光板2,3側部から光を入射する発光体６と、 前記各導光板2,3の他側部に設けられ、該各導光板2,3に
対し各々所定角度傾斜する斜辺部5dが対向して形成さ
れ、前記裏面導光板３の他側部から出射する光を前記表
面導光板２の他側部から再び入射させる光変向体５とを
備えたことを特徴としている。[Means for Solving the Problems] In order to achieve the above-mentioned object, the lighting device of the present invention has a planar shape in which light can be transmitted through the inside and unevenness 2a is provided on the lower surface side and the upper surface serves as a light emitting surface. The front light guide plate 2, a back light guide plate 3 provided below the front light guide plate 2 and allowing light to pass through the inside, and one light guide plate provided on one side of the front light guide plate 2 and the back light guide plate 3. The light emitter 6 which receives light from the side portions 2 and 3 and the oblique side portion 5d which is provided on the other side portion of each of the light guide plates 2 and 3 and is inclined at a predetermined angle with respect to each of the light guide plates 2 and 3 face each other. And a light redirecting body 5 that causes the light emitted from the other side of the back surface light guide plate 3 to enter again from the other side of the front light guide plate 2.
［作用］ 上記構成によれば、発光体６から出射された光は、表面
導光板２の一側部から入射され、凹凸2aによりこの光は
立ち上げられて表面導光板１表面を面発光させる。[Operation] According to the above configuration, the light emitted from the light emitting body 6 is incident from one side of the surface light guide plate 2, and the light is raised by the unevenness 2a to cause the surface of the surface light guide plate 1 to emit surface light. .
さらに、発光体６の光は、裏面導光板３を透過し光変向
体５により再び表面導光板２の他側部に入射される。こ
の光変向体５には、所定角度傾斜する斜辺部5dが形成さ
れており、この斜辺部5dにより裏面導光板３の光を表面
導光板２に屈折して入射させる。Further, the light of the light-emitting body 6 is transmitted through the back surface light guide plate 3 and is incident on the other side portion of the front surface light guide plate 2 again by the light deflector 5. The light diverting body 5 is formed with a slanted portion 5d inclined by a predetermined angle, and the slanted portion 5d refracts the light of the rear light guide plate 3 into the front light guide plate 2 and makes it incident.
これにより、表面導光板２は発光体から離れた箇所部分
でも暗くならずに、表面導光板２全体を均一に面発光さ
せることができる。As a result, the surface light guide plate 2 does not become dark even in a portion away from the light emitter, and the entire surface light guide plate 2 can be uniformly surface-emitted.
［実施例］ 第１図（ａ），（ｂ）は、本発明の照明装置の実施例を
示す平面図及び側断面図、第２図は、第１図（ｂ）のＡ
−Ａ線断面図である。[Embodiment] FIGS. 1 (a) and 1 (b) are a plan view and a side sectional view showing an embodiment of the illuminating device of the present invention, and FIG. 2 is A in FIG. 1 (b).
FIG.
照明体である導光板１は、アクリルにより側面が平面状
に、また平面で視て略長方形状に成型される。この導光
板１は、第２図に示すように表面導光板２と、裏面導光
板３による２層構造である。The light guide plate 1, which is an illuminator, is formed of acrylic into a flat side surface and a substantially rectangular shape when viewed from above. The light guide plate 1 has a two-layer structure including a front light guide plate 2 and a back light guide plate 3 as shown in FIG.
表面導光板２の底部には、凹凸2aが設けられる。凹凸2a
の形状は、半円状である。The bottom surface of the front light guide plate 2 is provided with irregularities 2a. Unevenness 2a
Has a semicircular shape.
これら、表面導光板２及び裏面導光板３の長尺方向側部
には、各々光集光体４と光変向体５が設けられる。光集
光体４は、一側部4aが前記導光板2,3に対接し、かつ中
間位置に突出する突起4bにより表面導光板２と裏面導光
板３とを所定距離隔設する。他側部4cは、隣接して設け
られる発光体６の外形に対応しかつ、発光体６に密接す
る形状とされている。ここで、発光体６は、導光板１の
長尺方向に断面円形状で筒形に形成されたものである。
従って、光集光体４は、発光体６とほぼ同一の高さに形
成されると共に、他側部4cは、発光体６の径とほぼ同一
の円弧状に形成される。そして、発光体６としては、白
熱ランプ、蛍光灯、及びLED等があり、いずれも円周の
全方向に発光するものを用いることとする。この発光体
６はリード6aが電源ラインに接続されることにより発光
動作する。A light condensing body 4 and a light diverting body 5 are provided on the longitudinal side portions of the front light guide plate 2 and the back light guide plate 3, respectively. In the light condensing body 4, one side portion 4a is in contact with the light guide plates 2 and 3, and the front light guide plate 2 and the back light guide plate 3 are separated from each other by a predetermined distance by a protrusion 4b protruding to an intermediate position. The other side portion 4c has a shape that corresponds to the outer shape of the light-emitting body 6 provided adjacent thereto and is in close contact with the light-emitting body 6. Here, the light emitting body 6 is formed in a tubular shape with a circular cross section in the longitudinal direction of the light guide plate 1.
Therefore, the light condensing body 4 is formed at substantially the same height as the light emitting body 6, and the other side portion 4c is formed in an arc shape substantially the same as the diameter of the light emitting body 6. The light-emitting body 6 includes an incandescent lamp, a fluorescent lamp, an LED, and the like, and all of them emit light in all directions of the circumference. The light emitting body 6 emits light when the lead 6a is connected to the power supply line.
これら、光集光体４、発光体６は、導光体１の長尺方向
に設けられる遮蔽枠７に収納される。遮蔽枠７は、内周
が倒Ｕ字形に形成され、前記表面導光板２、及び裏面導
光板３の両縁部を固定保持する。The light condensing body 4 and the light emitting body 6 are housed in a shielding frame 7 provided in the longitudinal direction of the light guide body 1. The shield frame 7 has an inner circumference formed in an inverted U shape, and fixedly holds both edges of the front light guide plate 2 and the back light guide plate 3.
光変向体５は、導光板１を挟んで前記光集光体４の対向
位置に設けられるものであり、一側部5aが前記導光板2,
3に対接し、かつ中間位置に突出する突起5bにより表面
導光板２と裏面導光板３とを所定距離隔設する。一方、
他側部5c側は、断面が倒台形状に形成されている。ここ
で、斜辺部5dは各々所定角度で傾斜して設けられる。The light redirecting body 5 is provided at a position facing the light converging body 4 with the light guide plate 1 interposed therebetween, and one side portion 5a has the light guide plate 2,
The front surface light guide plate 2 and the back surface light guide plate 3 are separated by a predetermined distance by a protrusion 5b that is in contact with the member 3 and projects to the intermediate position. on the other hand,
The other side portion 5c side has an inverted trapezoidal cross section. Here, the hypotenuse portions 5d are provided so as to be inclined at a predetermined angle.
この光変向体５は、導光体１を挟んで前記遮蔽枠７と対
向する遮蔽枠８に収納される。この遮蔽枠８は、前記表
面導光板２、及び裏面導光板３の両縁部を固定保持す
る。The light redirecting body 5 is housed in a shield frame 8 that faces the shield frame 7 with the light guide 1 interposed therebetween. The shielding frame 8 fixedly holds both edges of the front light guide plate 2 and the back light guide plate 3.
前記表面導光板２の表面全面には、半透明な光変向フィ
ルム９が設けられる。この光変向フィルム９は、光を面
方向に変向する。A semitransparent light diverting film 9 is provided on the entire surface of the surface light guide plate 2. The light redirecting film 9 redirects light in the plane direction.
一方、裏面導光板３の底面全面には、不透明な光遮蔽フ
ィルム10が設けられる。この光遮蔽フィルム10は、裏面
導光板３底面からの光の漏れを防止する。On the other hand, an opaque light shielding film 10 is provided on the entire bottom surface of the rear light guide plate 3. The light shielding film 10 prevents light from leaking from the bottom surface of the rear light guide plate 3.
そして、導光板１の短尺方向両側部には第１図（ａ）に
示す如く各々遮蔽枠11,12が設けられることにより、導
光板１を構成する表面導光板２及び裏面導光板３は遮蔽
枠7,8,11,12により枠付けされて仕上がる。Further, as shown in FIG. 1A, shielding frames 11 and 12 are provided on both sides of the light guide plate 1 in the short-side direction, so that the front light guide plate 2 and the back light guide plate 3 constituting the light guide plate 1 are shielded. Framed by frames 7, 8, 11, and 12 to finish.
次に、上記構成による照明装置の動作を説明する。Next, the operation of the lighting device having the above configuration will be described.
発光体６が発光することにより、この発光体６は外周全
面から光を放射する。発光体６には光集光体の他側部4c
が密接しているため発光体６の光は、光集光体４により
効率を落とすことなく表面導光板２及び裏面導光板３に
入射する。When the light emitting body 6 emits light, the light emitting body 6 emits light from the entire outer circumference. The light-emitting body 6 includes the other side portion 4c of the light collector.
The light of the light-emitting body 6 is incident on the front light guide plate 2 and the back light guide plate 3 without lowering the efficiency by the light condensing body 4 because of the close contact.
表面導光板２に入射された光は凹凸2aで立ち上げられ、
表面導光板２表面から出射される。The light incident on the surface light guide plate 2 is raised by the unevenness 2a,
The light is emitted from the surface of the front light guide plate 2.
尚、上記照明装置は、中規模のものに用いられ例えば、
液晶表示用のバックライトや、広告灯、非常口案内灯、
さらに室内インテリアに用いることができる。The above lighting device is used for medium-scale ones, for example,
LCD backlight, advertising lights, emergency exit lights,
Furthermore, it can be used for indoor interior.
そして、発光体６の光は、裏面導光板３を透過し光変向
体５により再び表面導光板２の他側部に入射される。こ
の光変向体５には、所定角度傾斜する斜辺部5dが対向形
成されており、この２つの斜辺部5dにより光が180度屈
折する。Then, the light of the light-emitting body 6 is transmitted through the rear light guide plate 3 and is incident on the other side portion of the front light guide plate 2 again by the light redirecting member 5. A hypotenuse portion 5d inclined by a predetermined angle is formed opposite to the light deflector 5, and light is refracted by 180 degrees by the two hypotenuse portions 5d.
これにより、表面導光板２全体を均一に面発光させるこ
とができる。Accordingly, the entire surface light guide plate 2 can be uniformly surface-emitted.
［発明の効果］ 本発明によれば、表面導光板の下面には凹凸が設けら
れ、上面を発光させることができ、これと別な裏面導光
板により発光体の光が透過され、発光体から離れた箇所
には、対向する斜辺部が形成された光変向体を設けて裏
面導光板の光を表面導光板に再入射する構成であるた
め、表面導光板の発光体から離れた箇所部分でも暗くな
らずに、この表面導光板全体を均一に面発光させること
ができる。EFFECTS OF THE INVENTION According to the present invention, the lower surface of the front light guide plate is provided with irregularities, and the upper surface can emit light. A light diverting body having opposite oblique sides is formed at a distant location to re-enter the light from the rear light guide plate into the front light guide plate. However, the entire surface light guide plate can be uniformly surface-emitted without becoming dark.
また、上記効果は簡単な構成で達成することができ、か
つ従来同様、発光源の保守が容易に行える。Further, the above effect can be achieved with a simple structure, and the maintenance of the light emitting source can be easily performed as in the conventional case.
第１図（ａ）は、本発明の照明装置の一実施例を示す平
面図、第１図（ｂ）は、同図（ａ）のＡ−Ａ線断面図、
第２図は、第１図（ｂ）の拡大図である。 １……導光板、２……表面導光体、３……裏面導光体、
４……光集光体、５……光変向体、６……発光体、7,8,
11,12……遮蔽枠、９……光変向フィルム、10……光遮
蔽フィルム。1 (a) is a plan view showing an embodiment of the illuminating device of the present invention, FIG. 1 (b) is a sectional view taken along the line AA of FIG. 1 (a),
FIG. 2 is an enlarged view of FIG. 1 (b). 1 ... Light guide plate, 2 ... Front light guide, 3 ... Back light guide,
4 ... Light condensing body, 5 ... Light diverting body, 6 ... Light emitting body, 7,8,
11,12 …… Shielding frame, 9 …… Light diverting film, 10 …… Light shielding film.
Claims (1)
凸（2a）が設けられて上面を発光面とする平面状の表面
導光板（２）と、 該表面導光板の下部に設けられ内部を光が透過自在な裏
面導光板（３）と、 前記表面導光板および裏面導光板の一側部に設けられ、
各導光板側部から光を入射する発光体（６）と、 前記各導光板の他側部に設けられ、該各導光板に対し各
々所定角度傾斜する斜辺部（5d）が対向して形成され、
前記裏面導光板の他側部から出射する光を前記表面導光
板の他側部から再び入射させる光変向体（５）と、 を備えたことを特徴とする照明装置。1. A flat surface light guide plate (2) which allows light to pass through the inside thereof and is provided with unevenness (2a) on the lower surface side and has an upper surface as a light emitting surface, and a lower surface of the surface light guide plate. A backside light guide plate (3) that is provided to allow light to pass through the inside, and is provided on one side of the front and backside light guide plates,
A light-emitting body (6) that receives light from each side of each light guide plate and a hypotenuse part (5d) that is provided on the other side of each light guide plate and is inclined at a predetermined angle with respect to each light guide plate are formed to face each other. Is
An illuminating device, comprising: a light deflector (5) that causes light emitted from the other side of the back light guide plate to be incident again from the other side of the front light guide plate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1162632A JPH0695441B2 (en) | 1989-06-27 | 1989-06-27 | Lighting equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1162632A JPH0695441B2 (en) | 1989-06-27 | 1989-06-27 | Lighting equipment |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0329205A JPH0329205A (en) | 1991-02-07 |
| JPH0695441B2 true JPH0695441B2 (en) | 1994-11-24 |
Family
ID=15758303
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1162632A Expired - Lifetime JPH0695441B2 (en) | 1989-06-27 | 1989-06-27 | Lighting equipment |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0695441B2 (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106536280B (en) | 2014-07-23 | 2019-06-18 | Tk控股公司 | Turn to lever lamp bar system |
| DE112018000309B4 (en) | 2017-01-04 | 2021-08-26 | Joyson Safety Systems Acquisition Llc | Vehicle lighting systems and methods |
| WO2019173750A1 (en) | 2018-03-08 | 2019-09-12 | Joyson Safety Systems Acquisition Llc | Vehicle illumination systems and methods |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS55124106U (en) * | 1979-02-26 | 1980-09-03 | ||
| JPS55124104U (en) * | 1979-02-26 | 1980-09-03 | ||
| JPH06100886B2 (en) * | 1985-03-01 | 1994-12-12 | 達司 溝部 | Illumination light reflection display device |
| JPS6362105A (en) * | 1987-03-09 | 1988-03-18 | 株式会社明拓システム | Light source apparatus |
-
1989
- 1989-06-27 JP JP1162632A patent/JPH0695441B2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0329205A (en) | 1991-02-07 |
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