JPH09127897A - Surface light emitting body - Google Patents
Surface light emitting bodyInfo
- Publication number
- JPH09127897A JPH09127897A JP30836995A JP30836995A JPH09127897A JP H09127897 A JPH09127897 A JP H09127897A JP 30836995 A JP30836995 A JP 30836995A JP 30836995 A JP30836995 A JP 30836995A JP H09127897 A JPH09127897 A JP H09127897A
- Authority
- JP
- Japan
- Prior art keywords
- light
- plate
- light emitting
- transmissive plate
- light transmissive
- 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
Classifications
-
- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09F—DISPLAYING; ADVERTISING; SIGNS; LABELS OR NAME-PLATES; SEALS
- G09F13/00—Illuminated signs; Luminous advertising
- G09F13/20—Illuminated signs; Luminous advertising with luminescent surfaces or parts
- G09F13/22—Illuminated signs; Luminous advertising with luminescent surfaces or parts electroluminescent
Landscapes
- Illuminated Signs And Luminous Advertising (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、高速道路やトンネ
ルの側壁イルミネーション等の用途に適した面発光体に
関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a surface light emitter suitable for applications such as side wall illumination of highways and tunnels.
【０００２】[0002]
【従来の技術】近年、高速道路やトンネル内の側壁に
は、渋滞緩和や交通の安全性、景観等を向上させる目的
で面発光体を取付けることが検討されている。2. Description of the Related Art In recent years, it has been considered to mount a surface light emitter on a side wall of a highway or a tunnel for the purpose of alleviating traffic congestion, improving traffic safety, and improving scenery.
【０００３】このような面発光体としては、一般にＥＬ
（電界発光灯）が用いられている。また、これらの用途
とは別に、面発光体として光拡散性プラスチックシート
の側面から光を照射、拡散させるタイプのものや、乳半
色のプラスチックプレートの後面側から光を照射するタ
イプのものも知られている。As such a surface-emitting body, an EL is generally used.
(Electroluminescence lamp) is used. In addition to these applications, there are types of surface light emitters that irradiate and diffuse light from the side of the light diffusing plastic sheet, and types that irradiate light from the rear surface side of the milky semi-colored plastic plate. Are known.
【０００４】[0004]
【発明が解決しようとする課題】しかしながら、ＥＬは
耐湿性が悪く、寿命が短いという問題がある。また、光
拡散性プラスチックシートを使用した面発光体は、構造
が複雑な上に該シートが高価であるため、製造コストが
高くなるという問題がある。そして乳半色のプラスチッ
クプレートを使用した面発光体は、プレートの背面側に
光源を配置するため全体の厚みが大きくなり、しかも、
輝度ムラが生じて完全な面発光にならないという問題が
ある。However, EL has a problem that it has poor moisture resistance and has a short life. Further, the surface-emitting body using the light diffusing plastic sheet has a problem that the manufacturing cost becomes high because the structure is complicated and the sheet is expensive. And the surface light emitter using a milky-colored plastic plate has a large overall thickness because the light source is arranged on the back side of the plate, and moreover,
There is a problem that uneven brightness occurs and perfect surface emission cannot be achieved.
【０００５】本発明は上記問題に鑑みてなされたもの
で、その目的とするところは、構造が簡単で全体の厚み
が小さく、輝度ムラのない均一な面発光を行え、しかも
長寿命な面発光体を提供することにある。The present invention has been made in view of the above problems, and it is an object of the present invention to provide a simple structure, a small overall thickness, uniform surface emission without uneven brightness, and a long-life surface emission. To provide the body.
【０００６】[0006]
【課題を解決するための手段】前記目的を達成するた
め、本発明の請求項１の面発光体は、透光板の両端部か
ら中央部に近づくにつれて板厚が薄くなるように透光板
の後面をその中央部で屈曲する傾斜面に形成し、この透
光板の両端面に光源を配設したことを特徴とするもので
あり、また、請求項２の面発光体は、透光板の一端部か
ら他端部に近づくにつれて板厚が薄くなるように透光板
の後面を傾斜面に形成し、この透光板の一端面に光源を
配設したことを特徴とするものである。In order to achieve the above-mentioned object, the surface light emitter according to claim 1 of the present invention is a transparent plate such that the plate thickness becomes thinner from both ends of the transparent plate toward the central part. The rear surface is formed as an inclined surface that is bent at its central portion, and light sources are disposed on both end surfaces of the light transmitting plate. The rear surface of the translucent plate is formed into an inclined surface so that the plate thickness becomes thinner from one end of the plate toward the other end, and the light source is disposed on one end surface of the translucent plate. is there.
【０００７】そして、請求項３の面発光体は、上記の透
光板と光源をハウジングに収納して透光板の前面をハウ
ジングの前面開口部に露出させたことを特徴とし、請求
項４の面発光体は、透光板の傾斜面に形成された後面の
前面に対する傾斜角が１０〜３０°であることを特徴と
し、請求項５の面発光体は、光源がＬＥＤ発光素子であ
ることを特徴とし、請求項６の面発光体は、ＬＥＤ発光
素子を帯状の配線基板に一列に並べて多数マウントし、
透光板の端面に形成された凹溝に該配線基板をＬＥＤ発
光素子が内側となるように嵌着したことを特徴とし、請
求項７の面発光体は、透光板の凹溝に嵌込んだＬＥＤ発
光素子を透明樹脂で凹溝内に封入したことを特徴とし請
求項８の面発光体は、ハウジングの内面を光反射面とし
たことを特徴とするものである。According to a third aspect of the present invention, there is provided a surface light emitter according to the third aspect, wherein the light transmitting plate and the light source are housed in a housing to expose a front surface of the light transmitting plate to a front opening of the housing. In the surface light emitter of claim 5, the inclination angle of the rear surface formed on the inclined surface of the translucent plate with respect to the front surface is 10 to 30 °, and in the surface light emitter of claim 5, the light source is an LED light emitting element. The surface emitting body according to claim 6, wherein a large number of LED light emitting elements are mounted in a line on a strip-shaped wiring board,
8. The surface emitting body according to claim 7, wherein the wiring board is fitted in a groove formed in an end surface of the light transmitting plate so that the LED light emitting element is inside. The embedded LED light emitting element is enclosed in a groove with a transparent resin, and the surface light emitter according to claim 8 is characterized in that the inner surface of the housing is a light reflecting surface.
【０００８】本発明の請求項１及び請求項２の面発光体
は、上記のように透光板の両端面又は一端面に光源を配
設した極めてシンプルな構造をしており、光源を透光板
の後面側に配設しないので全体の厚さを薄くすることが
できる。そして光源を点灯すると、請求項１の面発光体
では光源からの光が透光板の両端面から入射し、入射光
の大部分が透光板の後面、つまり屈曲した傾斜面で光屈
折率の差により全反射して透光板の前面から広角度で放
出され、また、請求項２の面発光体では光源からの光が
透光板の一端面から入射し、入射光の大部分が透光板の
傾斜面とされた後面で光屈折率の差により全反射して透
光板の前面から広角度で放出される。従って、これら請
求項１，２の面発光体はいずれも、輝度ムラが殆どない
状態でほぼ均一に面発光を行うことができる。特に、請
求項４の面発光体のように透光板の傾斜面に形成された
後面の傾斜角が１０〜３０°であると、入射光の全反射
する割合が高く、透光板前面からの光の放出角度も広く
なるので、良好な面発光が行われる。The surface light emitting device according to the first and second aspects of the present invention has an extremely simple structure in which the light sources are arranged on both end faces or one end face of the light transmitting plate as described above. Since it is not arranged on the rear surface side of the light plate, the total thickness can be reduced. Then, when the light source is turned on, in the surface light emitting device according to claim 1, the light from the light source is incident from both end surfaces of the light transmitting plate, and most of the incident light is at the rear surface of the light transmitting plate, that is, the curved inclined surface. The light is emitted from the front surface of the transparent plate at a wide angle due to the total reflection, and the light from the light source is incident from one end surface of the transparent plate, and most of the incident light is emitted. The light is reflected from the front surface of the transparent plate at a wide angle by being totally reflected on the rear surface of the transparent plate, which is an inclined surface. Therefore, each of the surface light emitters according to claims 1 and 2 can substantially uniformly perform surface light emission in the state where there is almost no unevenness in brightness. In particular, when the inclination angle of the rear surface formed on the inclined surface of the translucent plate is 10 to 30 ° as in the surface light emitter of claim 4, the incident light is totally reflected at a high rate, and the incident light from the front surface of the translucent plate is high. Since the emission angle of the light is also widened, excellent surface emission is performed.
【０００９】また、請求項３の面発光体のように透光板
と光源をハウジングに収納すると、光源等がハウジング
で保護されるため光源等の破損や断線の心配がなくな
り、運搬もしやすくなる。そして、請求項８の面発光体
のようにハウジングの内面を光反射面にすると、透光板
の後方へ屈折した光もハウジングの内面で反射されて無
駄なく前方へ放出されるため、発光輝度が向上する。特
に、請求項５の面発光体のように光源がＬＥＤ発光素子
であると、その寿命がＥＬより遥かに長いので半永久的
に使用可能となる。更に、請求項６の面発光体のように
ＬＥＤ発光素子を一列に並べて多数マウントした帯状の
配線基板を透光板の端面の凹溝に嵌着すると、ＬＥＤ発
光素子の透光板端面への配設作業や配線が極めて簡単と
なり、効率良く面発光体を組立てることができる。そし
て、請求項７の面発光体のようにＬＥＤ発光素子を透明
樹脂で凹溝内に封入すると、透光板にＬＥＤ発光素子の
光が入射する際、界面での光屈折の変化が少なく、光の
減衰が小さくなる。When the light-transmitting plate and the light source are housed in the housing as in the surface light emitter of claim 3, the light source and the like are protected by the housing, so that there is no fear of damage or disconnection of the light source or the like, and transportation becomes easy. . When the inner surface of the housing is a light-reflecting surface as in the surface light emitter of claim 8, the light refracted to the rear of the light-transmitting plate is also reflected on the inner surface of the housing and is emitted forward without waste. Is improved. In particular, when the light source is an LED light emitting element like the surface light emitter of claim 5, the life of the light emitting element is much longer than that of EL, so that it can be used semipermanently. Furthermore, when a strip-shaped wiring board in which a large number of LED light emitting elements are arranged in a line and mounted as in the surface light emitter according to claim 6 is fitted into a recessed groove on the end surface of the light transmitting plate, the end surface of the light emitting plate of the LED light emitting element is The installation work and wiring are extremely simple, and the surface light emitter can be efficiently assembled. When the LED light emitting element is sealed in the concave groove with a transparent resin like the surface light emitter according to claim 7, when the light of the LED light emitting element enters the translucent plate, the change of the light refraction at the interface is small, Light attenuation is reduced.
【００１０】[0010]
【発明の実施の形態】以下、図面を参照して本発明の好
ましい実施形態を説明する。Preferred embodiments of the present invention will be described below with reference to the accompanying drawings.
【００１１】図１は本発明の面発光体の一実施形態を示
す断面図、図２はその分解斜視図、図３はＬＥＤ発光素
子をマウントした基板の斜視図である。FIG. 1 is a sectional view showing an embodiment of the surface light emitting device of the present invention, FIG. 2 is an exploded perspective view thereof, and FIG. 3 is a perspective view of a substrate on which an LED light emitting element is mounted.
【００１２】この面発光体は、図１に示すように、透光
板１の上下の両端面に光源としてＬＥＤ発光素子２を配
設し、この透光板１をハウジング３に収納して透光板１
の前面１ａをハウジング３の前面開口部に露出させたシ
ンプルな構造をしている。As shown in FIG. 1, this surface-emitting body has LED light emitting elements 2 as light sources disposed on both upper and lower end surfaces of a light transmitting plate 1, and the light transmitting plate 1 is housed in a housing 3 to transmit light. Light board 1
It has a simple structure in which the front surface 1a is exposed at the front opening of the housing 3.
【００１３】透光板１は、アクリル樹脂、ポリカーボネ
ート、ポリ塩化ビニル等の透明樹脂、或はガラス等から
なる透明の板であり、この透光板１の上下両端部から中
央部に近づくにつれて板厚が徐々に薄くなるように、透
光板１の後面１ｂがその中央部で屈曲する傾斜面に形成
されている。そして、この透光板１の上下の側端面に
は、ＬＥＤ発光素子２を配設するための凹溝１ｃ，１ｃ
が形成されている。The light-transmitting plate 1 is a transparent plate made of a transparent resin such as acrylic resin, polycarbonate, polyvinyl chloride, or glass, and the plate is formed from the upper and lower end portions of the light-transmitting plate 1 toward the central portion. The rear surface 1b of the translucent plate 1 is formed into an inclined surface that is bent at the center thereof so that the thickness thereof becomes gradually smaller. Then, on the upper and lower side end surfaces of the transparent plate 1, concave grooves 1c for arranging the LED light emitting element 2 are formed.
Are formed.
【００１４】この屈曲する傾斜面に形成された透光板後
面１ｂの前面１ａに対する傾斜角θは、１０〜３０°の
範囲に設定することが望ましく、この範囲に設定する
と、後述のようにＬＥＤ発光素子２から出た光が透光板
後面１ｂで全反射する割合が高くなり、且つ、透光板前
面１ａからの光の放出角度も広くなって、良好な面発光
が行われるようになる。The inclination angle θ of the rear surface 1b of the light-transmitting plate formed on the curved inclined surface with respect to the front surface 1a is preferably set in the range of 10 to 30 °, and when set in this range, the LED will be described later. The proportion of the light emitted from the light emitting element 2 is totally reflected by the rear surface 1b of the transparent plate, and the emission angle of the light from the front surface 1a of the transparent plate is widened, so that good surface emission is performed. .
【００１５】ＬＥＤ発光素子２は、図３に示すように帯
状の配線基板４の上に一列に並べて多数マウントされて
おり、リード線４ａで通電すると各ＬＥＤ発光素子２が
一斉に点灯するようになっている。そして、図１に示す
ように、透光板１の上記凹溝１ｃ，１ｃに該配線基板４
をＬＥＤ発光素子２が内側となるように嵌着することに
よって、ＬＥＤ発光素子２が透光板１の上下の両端面に
一列に配設されている。このようにすると、ＬＥＤ発光
素子２の配設作業や配線が簡単となるので、面発光体の
組立作業効率を向上させることができる。As shown in FIG. 3, a large number of LED light emitting elements 2 are mounted in a line on a strip-shaped wiring board 4 so that the LED light emitting elements 2 are turned on all at once when energized by a lead wire 4a. Has become. Then, as shown in FIG. 1, the wiring board 4 is formed in the concave grooves 1c, 1c of the transparent plate 1.
The LED light emitting elements 2 are arranged in a line on both upper and lower end surfaces of the transparent plate 1 by fitting the LED light emitting elements 2 inside. In this way, the work of arranging the LED light emitting elements 2 and the wiring are simplified, so that the efficiency of assembling the surface light emitter can be improved.
【００１６】更に、図５に示すように透光板１の凹溝１
ｃに嵌込んだＬＥＤ発光素子２を透明樹脂５で凹溝１ｃ
内に封入すると、水分の浸入を防止することができ、し
かもＬＥＤ発光素子２から出た光が透光板１に入射する
際、界面での光屈折の変化が少なくなって光の減衰が小
さくなるので、発光輝度の低下を防止することができ
る。封入用の透明樹脂５としてはシリコン樹脂、エポキ
シ樹脂などの光透過性の良い樹脂が好適に使用され、注
型などの方法で封入される。Further, as shown in FIG. 5, the concave groove 1 of the transparent plate 1
The LED light emitting element 2 fitted in the c is made of the transparent resin 5 and the concave groove 1c is formed.
By enclosing it in the inside, it is possible to prevent the intrusion of water, and when the light emitted from the LED light emitting element 2 enters the transparent plate 1, the change of the light refraction at the interface is reduced and the light attenuation is small. Therefore, it is possible to prevent a decrease in light emission luminance. As the transparent resin 5 for encapsulation, a resin having a high light transmittance such as a silicone resin or an epoxy resin is preferably used, and it is encapsulated by a method such as casting.
【００１７】ＬＥＤ発光素子２としては、図３に示すよ
うなチップ状の素子（所謂ＬＥＤチップ）の他、ランプ
状の素子（所謂ＬＥＤランプ）等も使用可能である。ま
た、ＬＥＤ発光素子２は全て同一の発光色のものに統一
してもよいが、発光色の異なる２種以上のＬＥＤ発光素
子を交互に並べ、通電の切替えにより発光色を変更でき
るようにしてもよい。As the LED light emitting element 2, in addition to a chip-shaped element (so-called LED chip) as shown in FIG. 3, a lamp-shaped element (so-called LED lamp) or the like can be used. The LED light emitting elements 2 may be unified to have the same light emitting color, but two or more kinds of LED light emitting elements having different light emitting colors are alternately arranged so that the light emitting color can be changed by switching the energization. Good.
【００１８】ハウジング３はアルミニウム等の金属や硬
質のプラスチックから成るもので、図１及び図２に示す
ようにハウジング３の上下両端縁にはコ字形折曲部３
ａ，３ａが形成されており、ハウジング３の前面は溝状
に開口している。そして、このコ字形折曲部３ａ，３ａ
に上記透光板１の上下両端縁を挿入して、透光板１、Ｌ
ＥＤ発光素子２、配線基板４等をハウジング３に収容す
ると共に、透光板１の前面をハウジング３の前面開口部
に露出させ、更に端板３ｂ，３ｂをハウジング３の長手
方向両端に取付けて面発光体を組立てている。このよう
にハウジング３に収容すると、ＬＥＤ発光素子２等の破
損や断線の心配がなくなり、運搬や保管もしやすくな
る。The housing 3 is made of a metal such as aluminum or a hard plastic. As shown in FIGS. 1 and 2, the upper and lower edges of the housing 3 have U-shaped bent portions 3 at the upper and lower edges thereof.
a and 3a are formed, and the front surface of the housing 3 is opened in a groove shape. Then, the U-shaped bent portions 3a, 3a
Insert the upper and lower edges of the transparent plate 1 into the transparent plate 1, L
The ED light emitting element 2, the wiring board 4 and the like are housed in the housing 3, the front surface of the translucent plate 1 is exposed in the front opening of the housing 3, and the end plates 3b and 3b are attached to both ends of the housing 3 in the longitudinal direction. The surface light emitter is assembled. When the LED light emitting element 2 and the like are housed in the housing 3 in this manner, there is no fear of damage or disconnection of the LED light emitting element 2 and the like, and it becomes easy to carry and store.
【００１９】このハウジング３の内面３ｃは、例えば白
色系や銀色系の光反射塗料を塗布する等の手段によって
光反射率の高い光反射面とすることが望ましく、このよ
うにハウジング内面３ｃを光反射面にすると、透光板１
の後面１ｂによって透光板１の後方へ屈折された光もハ
ウジング内面３ｃで反射されて無駄なく前方へ放出され
るため、発光輝度が向上する。尚、ハウジング３がプラ
スチック製のものである場合は、酸化チタン等の白色顔
料を混入して、ハウジング内面３ｃの光反射率を高める
ようにしてもよい。また、ハウジング内面３ｃを光反射
面とする代わりに、透光板１とハウジング３の間に光反
射シート（不図示）を挟み込むようにしてもよく、その
場合も上記と同様に発光輝度が向上する。The inner surface 3c of the housing 3 is preferably a light-reflecting surface having a high light reflectance by means such as applying a white or silver-based light-reflecting paint. When used as a reflective surface, the transparent plate 1
The light refracted to the rear of the transparent plate 1 by the rear surface 1b is also reflected on the inner surface 3c of the housing and is emitted to the front without waste, so that the emission brightness is improved. When the housing 3 is made of plastic, a white pigment such as titanium oxide may be mixed to increase the light reflectance of the housing inner surface 3c. Further, instead of using the inner surface 3c of the housing as a light reflecting surface, a light reflecting sheet (not shown) may be sandwiched between the light transmitting plate 1 and the housing 3, and in that case, the light emission brightness is improved similarly to the above. To do.
【００２０】このような構成の面発光体は、透光板１の
前面１ａが露出するように高速道路やトンネルの側壁に
埋設され、ＬＥＤ発光素子２に通電すると透光板１が面
発光して路側照明を行う。即ち、通電によりＬＥＤ発光
素子２を点灯させると、その光が透光板１の上下両端面
から入射し、入射光の大部分が透光板１の屈曲傾斜面と
された後面１ｂで光屈折率の差により全反射して透光板
１の前面１ａから広角度で放出されるため、輝度ムラが
殆どない均一な面発光が行われる。そして、その発光輝
度は、光源がＬＥＤ発光素子２であるため高く、特にハ
ウジング３の内面３ｃを光反射面に形成したものは、透
光板１の後面で反射されずに透光板１の後方へ屈折した
光もハウジング内面３ｃで反射させて無駄なく前方へ放
出させるため、発光輝度が一層向上する。従って、この
面発光体で路側照明を行うと、渋滞の緩和や交通の安全
性、道路の景観等をより一層向上させることができ、ま
た、ＬＥＤ発光素子の寿命が長いので耐久性も抜群であ
り、半永久的に使用することができる。The surface light emitter having such a structure is embedded in a side wall of a highway or a tunnel so that the front surface 1a of the light transmitting plate 1 is exposed. When the LED light emitting element 2 is energized, the light transmitting plate 1 emits surface light. Roadside lighting. That is, when the LED light emitting element 2 is turned on by energizing, the light is incident from the upper and lower end surfaces of the light transmitting plate 1, and most of the incident light is refracted by the rear surface 1b which is the bent inclined surface of the light transmitting plate 1. Since the light is totally reflected and emitted from the front surface 1a of the translucent plate 1 at a wide angle due to the difference in the ratio, uniform surface emission with almost no uneven brightness is performed. The light emission brightness is high because the light source is the LED light emitting element 2. In particular, the housing 3 having the inner surface 3c formed as a light reflecting surface is not reflected by the rear surface of the light transmitting plate 1 and is not reflected by the light transmitting plate 1. The light refracted backward is also reflected by the inner surface 3c of the housing and is emitted forward without waste, so that the emission brightness is further improved. Therefore, when roadside lighting is performed with this surface light emitter, traffic congestion can be alleviated, traffic safety, road scenery, etc. can be further improved, and since the LED light emitting element has a long life, its durability is also outstanding. Yes, it can be used semi-permanently.
【００２１】図４は本発明の面発光体の他の実施形態を
示す断面図である。FIG. 4 is a sectional view showing another embodiment of the surface light emitter of the present invention.
【００２２】この面発光体は、透光板１の一端部（図で
は上端部）から他端部（図では下端部）に近づくにつれ
て板厚が薄くなるように、透光板１の後面１ｂを平坦な
傾斜面に形成し、透光板１の一端面（上端面）に設けた
凹溝１ｃに、ＬＥＤ発光素子２を多数マウントした配線
基板４を嵌着している。その他の構成は前記実施形態の
面発光体と同一であるので、図４において同一部材に同
一符号を付し、説明を省略する。This surface-emitting body has a rear surface 1b of the transparent plate 1 such that the plate thickness becomes thinner from one end (the upper end in the drawing) of the transparent plate 1 toward the other end (the lower end in the drawing). Is formed on a flat inclined surface, and a wiring board 4 on which a large number of LED light emitting elements 2 are mounted is fitted into a concave groove 1c provided on one end surface (upper end surface) of the transparent plate 1. Since other configurations are the same as those of the surface-emitting body of the above-mentioned embodiment, the same members are designated by the same reference numerals in FIG.
【００２３】このような構成の面発光体も、ＬＥＤ発光
素子２を点灯させると、その光が透光板１の一端面（上
端面）から入射し、入射光の大部分が透光板１の傾斜面
にされた後面１ｂで光屈折率の差により全反射して透光
板１の前面１ａから広角度で放出されるため、輝度ムラ
の殆どない均一な面発光を行うことができる。In the surface light emitter having such a structure, when the LED light emitting element 2 is turned on, the light is incident from one end surface (upper end surface) of the light transmitting plate 1, and most of the incident light is transmitted through the light transmitting plate 1. Since the rear surface 1b, which is an inclined surface, is totally reflected by the difference in light refractive index and is emitted from the front surface 1a of the transparent plate 1 at a wide angle, it is possible to perform uniform surface emission with almost no uneven brightness.
【００２４】以上、二つの実施形態を挙げて本発明の面
発光体を説明したが、本発明はこれらの実施形態のみに
限定されるものではなく、例えば、光源としてＬＥＤ発
光素子以外の豆球や蛍光灯等を使用するなど、種々の設
計的変更を許容するものである。また用途についても、
高速道路やトンネルの路側電飾の他に、ビルのアプロー
チ部分や壁面の電極、照明、公園等のセメント板敷設地
面の電飾、照明など、各種電飾、照明用途に使用できる
ことは言うまでもない。Although the surface light-emitting body of the present invention has been described above with reference to the two embodiments, the present invention is not limited to these embodiments. For example, a light bulb other than an LED light-emitting element as a light source is used. It allows various design changes such as using a fluorescent lamp or a fluorescent lamp. Also regarding the application,
It is needless to say that it can be used for various illuminations and lighting applications, such as roadside illuminations of highways and tunnels, electrodes of building approach parts and wall surfaces, lighting, illumination of cement plate laying grounds such as parks, and illumination.
【００２５】[0025]
【発明の効果】本発明の面発光体は、中央で屈曲する傾
斜面又は平坦な傾斜面に形成された透光板の後面で光屈
折率の差により全反射した光が、透光板の前面から広角
度で放出されるため、輝度ムラの殆どない均一な面発光
を行うことができ、しかも、構造がシンプルであるから
簡単且つ安価に製造することができ、また、全体の厚み
が小さいので取付スペースを小さくすることも可能であ
り、特に、光源としてＬＥＤ発光素子を用いたものは、
ＥＬの面発光体に比べて耐久性に優れているという顕著
な効果を奏する。In the surface light emitter of the present invention, the light totally reflected by the rear surface of the light transmitting plate formed on the inclined surface which is bent at the center or the flat inclined surface due to the difference in light refractive index, Since it is emitted from the front surface at a wide angle, it is possible to perform uniform surface emission with almost no unevenness in brightness, and the simple structure enables easy and inexpensive manufacture, and the overall thickness is small. Therefore, it is possible to reduce the mounting space. Especially, the one using the LED light emitting element as the light source is
It has a remarkable effect that it is superior in durability as compared with the surface light emitter of EL.
【図１】本発明の面発光体の一実施形態を示す断面図で
ある。FIG. 1 is a cross-sectional view showing an embodiment of a surface light emitter of the present invention.
【図２】同実施形態の面発光体の分解斜視図である。FIG. 2 is an exploded perspective view of the surface light emitter according to the same embodiment.
【図３】同実施形態の面発光体に用いるＬＥＤ発光素子
をマウントした基板の斜視図である。FIG. 3 is a perspective view of a substrate on which an LED light emitting element used for the surface light emitting device of the same embodiment is mounted.
【図４】本発明の面発光体の他の実施形態を示す断面図
である。FIG. 4 is a cross-sectional view showing another embodiment of the surface light emitter of the present invention.
【図５】本発明の面発光体の更に他の実施形態を示す部
分断面図である。FIG. 5 is a partial cross-sectional view showing still another embodiment of the surface light emitter of the present invention.
１ 透光性樹脂板 １ａ 透光性樹脂板の前面 １ｂ 透光性樹脂板の後面 ２ 光源（ＬＥＤ発光素子） ３ ハウジング ３ｃ ハウジングの内面 ４ 配線基板 ５ 透明樹脂 θ 透光性樹脂板の前面に対する後面の傾斜角 1 translucent resin plate 1a translucent resin plate front surface 1b translucent resin plate rear surface 2 light source (LED light emitting element) 3 housing 3c housing inner surface 4 wiring board 5 transparent resin θ translucent resin plate front surface Rear tilt angle
Claims (8)
て板厚が薄くなるように透光板の後面をその中央部で屈
曲する傾斜面に形成し、この透光板の両端面に光源を配
設したことを特徴とする面発光体。1. A rear surface of a translucent plate is formed into an inclined surface that is bent at the central part so that the plate thickness becomes thinner from both ends of the translucent plate toward the center part. A surface light emitter characterized by having a light source.
て板厚が薄くなるように透光板の後面を傾斜面に形成
し、この透光板の一端面に光源を配設したことを特徴と
する面発光体。2. A rear surface of the transparent plate is formed into an inclined surface so that the plate thickness becomes thinner from one end to the other end of the transparent plate, and a light source is arranged on one end surface of the transparent plate. A surface light emitter characterized by the above.
板の前面をハウジングの前面開口部に露出させたことを
特徴とする請求項１又は請求項２に記載の面発光体。3. The surface light emitter according to claim 1, wherein the light transmitting plate and the light source are housed in a housing, and the front surface of the light transmitting plate is exposed at the front opening of the housing.
対する傾斜角が１０〜３０°であることを特徴とする請
求項１ないし請求項３のいずれかに記載の面発光体。4. The surface light emitting device according to claim 1, wherein an inclination angle of the rear surface formed on the inclined surface of the light transmitting plate with respect to the front surface is 10 to 30 °.
する請求項１ないし請求項４のいずれかに記載の面発光
体。5. The surface light emitting device according to claim 1, wherein the light source is an LED light emitting element.
並べて多数マウントし、透光板の端面に形成された凹溝
に該配線基板をＬＥＤ発光素子が内側となるように嵌着
したことを特徴とする請求項５に記載の面発光体。6. A large number of LED light emitting elements are arranged in a line on a strip-shaped wiring board and mounted, and the wiring board is fitted in a groove formed on an end surface of a light-transmitting plate so that the LED light emitting elements are located inside. The surface light emitter according to claim 5.
透明樹脂で凹溝内に封入したことを特徴とする請求項６
に記載の面発光体。7. The LED light-emitting element fitted in the groove of the translucent plate is sealed in the groove with a transparent resin.
The surface light-emitting device according to.
特徴とする請求項３に記載の面発光体。8. The surface light emitter according to claim 3, wherein the inner surface of the housing is a light reflecting surface.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP30836995A JPH09127897A (en) | 1995-10-31 | 1995-10-31 | Surface light emitting body |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP30836995A JPH09127897A (en) | 1995-10-31 | 1995-10-31 | Surface light emitting body |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH09127897A true JPH09127897A (en) | 1997-05-16 |
Family
ID=17980243
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP30836995A Pending JPH09127897A (en) | 1995-10-31 | 1995-10-31 | Surface light emitting body |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH09127897A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2007226250A (en) * | 2000-07-25 | 2007-09-06 | Fujifilm Corp | Light emitting head |
| JP2008008070A (en) * | 2006-06-30 | 2008-01-17 | Iwasaki Electric Co Ltd | Guide display device |
| US8421910B2 (en) | 2000-07-25 | 2013-04-16 | Fujifilm Corporation | Electronic flash, electronic camera and light emitting head |
-
1995
- 1995-10-31 JP JP30836995A patent/JPH09127897A/en active Pending
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2007226250A (en) * | 2000-07-25 | 2007-09-06 | Fujifilm Corp | Light emitting head |
| US8421910B2 (en) | 2000-07-25 | 2013-04-16 | Fujifilm Corporation | Electronic flash, electronic camera and light emitting head |
| US8634021B2 (en) | 2000-07-25 | 2014-01-21 | Fujifilm Corporation | Electronic flash, electronic camera and light emitting head |
| US8675124B2 (en) | 2000-07-25 | 2014-03-18 | Fujifilm Corporation | Electronic flash, electronic camera and light emitting head |
| US9479751B2 (en) | 2000-07-25 | 2016-10-25 | Fujifilm Corporation | Electronic flash, electronic camera and light emitting head |
| US10250863B2 (en) | 2000-07-25 | 2019-04-02 | Fujifilm Corporation | Electronic flash, electronic camera and light emitting head |
| US10326970B1 (en) | 2000-07-25 | 2019-06-18 | Fujifilm Corporation | Electronic flash, electronic camera and light emitting head |
| JP2008008070A (en) * | 2006-06-30 | 2008-01-17 | Iwasaki Electric Co Ltd | Guide display device |
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