JPH0439237B2 - - Google Patents
Info
- Publication number
- JPH0439237B2 JPH0439237B2 JP60264561A JP26456185A JPH0439237B2 JP H0439237 B2 JPH0439237 B2 JP H0439237B2 JP 60264561 A JP60264561 A JP 60264561A JP 26456185 A JP26456185 A JP 26456185A JP H0439237 B2 JPH0439237 B2 JP H0439237B2
- Authority
- JP
- Japan
- Prior art keywords
- light
- light emitting
- concave surface
- center line
- led lamp
- 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
- 239000000758 substrate Substances 0.000 claims description 9
- 230000005855 radiation Effects 0.000 claims description 7
- 230000000694 effects Effects 0.000 description 3
- 239000011521 glass Substances 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 239000011261 inert gas Substances 0.000 description 2
- 230000003287 optical effect Effects 0.000 description 2
- 238000007796 conventional method Methods 0.000 description 1
- 238000009792 diffusion process Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
Landscapes
- Arrangement Of Elements, Cooling, Sealing, Or The Like Of Lighting Devices (AREA)
- Non-Portable Lighting Devices Or Systems Thereof (AREA)
- Led Device Packages (AREA)
Description
【発明の詳細な説明】
〔産業上の利用分野〕
本発明は、例えば自動車の運転者に道路情報な
どを告知するために道路の上面などに設置されて
いる光点式の表示板などのように、専らに屋外に
設けられ、遠方からも判読出来るように比較的に
大きな発光面積を必要とするランプを信頼性の向
上などの目的で従来の白熱電球に替えて、発光ダ
イオードによるランプにしたものである。[Detailed Description of the Invention] [Industrial Application Field] The present invention is applicable to, for example, light-spot type display boards installed on the top of roads to notify road information etc. to car drivers. In order to improve the reliability of lamps that are installed exclusively outdoors and require a relatively large light-emitting area so that they can be read from a distance, conventional incandescent light bulbs were replaced with light-emitting diode lamps. It is something.
従来、この種の屋外用LENランプは第４図に
示すように平面状の例えばプリント基板１０の面
上に必要な発光面積が得られるように発光ダイオ
ード１を密接して配設するものであつた。
Conventionally, as shown in FIG. 4, in this type of outdoor LEN lamp, light emitting diodes 1 are disposed closely together on a flat surface, for example, a printed circuit board 10, so as to obtain the necessary light emitting area. Ta.
しかしながら、このような時に使用される一般
的な発光ダイオードは、その光の方射角が10度程
度と極めて狭いものであるので、前記した従来例
のように平面状の基板に取付けたのでは、発光面
積は広げることが出来るが、光の放射角は本質的
に広がることは無いので観察地点が僅かに側面に
ずれると、前記発光ダイオードの光の方射角から
外れ、その表示を読取ることが出来ないという問
題点を生じるものであり、当然にカーブしている
道路等に対応し難いという問題点を生じるもので
あつた。この問題点の解決方法として、前記発光
ダイオードの前面に比較的に微細な凸面あるいは
凹面を形成した前面レンズを取付けて光を拡散す
る方法などが提案され一部実施されているが、こ
の様なレンズで拡散を行うと、前記発光ダイオー
ドの光は均一的に散光してしまい配光に芯が無く
なり、光の到達距離が大きく減じ、それによつて
表示を行える範囲が狭いものになる別の問題点を
生じるものであり、本質的な解決策にはならない
ものであつた。
However, since the general light emitting diode used in such cases has an extremely narrow directional angle of about 10 degrees, it is difficult to install it on a flat substrate as in the conventional example mentioned above. Although the light emitting area can be expanded, the radiation angle of the light essentially does not widen, so if the observation point shifts slightly to the side, it will deviate from the directional angle of the light from the light emitting diode, making it difficult to read the display. This poses a problem in that it is not possible to do so, and naturally it is difficult to adapt to curved roads. As a solution to this problem, a method has been proposed and partially implemented, such as attaching a front lens with a relatively fine convex or concave surface to the front surface of the light emitting diode to diffuse the light. Another problem is that when diffusion is performed using a lens, the light from the light emitting diode is uniformly scattered, and there is no center in the light distribution, and the distance that the light reaches is greatly reduced, thereby narrowing the range that can be displayed. However, it did not provide a fundamental solution.
本発明は上記した従来の問題点を解決するため
の具体的な手段として複数個の一定の光の方射角
を持つ発光ダイオードを一体の基板に配設して一
個のランプに形成してある屋外用のLEDランプ
において、前記一体の基板が非球面である回転凹
面に形成され、該非球面の回転凹面に配設された
前記複数個の発光ダイオードの光の方射角の中心
線は全て前記回転凹面の中心線の延長線と交差し
ていることを特徴とする屋外用LEDランプを提
供することによつて、光の放射角を広げると共
に、配光に芯のあるものとすることで表示の到達
距離も長いものとして従来の問題点を解決するも
のである。
The present invention is a specific means for solving the above-mentioned conventional problems, in which a plurality of light emitting diodes having a certain angle of light are arranged on a single substrate to form a single lamp. In the outdoor LED lamp, the integrated substrate is formed into an aspherical rotating concave surface, and the center line of the direction angle of the light of the plurality of light emitting diodes disposed on the aspherical rotating concave surface is all within the above-mentioned direction. By providing an outdoor LED lamp that is characterized by intersecting the extension line of the center line of the rotating concave surface, the radiation angle of light is widened and the light distribution is centered. It solves the problems of the conventional method by providing a long reach.
つぎに、本発明を図に示す一実施例に基づいて
詳細に説明する。
Next, the present invention will be explained in detail based on an embodiment shown in the drawings.
第１図に示すものは本発明の基本的な原理を表
すものであり、発光ダイオード１ａ，１ｂ，１ｃ
は凹面２ａに形成された基板２に配設されてい
る。図は必要以上に複雑化しない様に発光ダイオ
ードの配設を凹面２ａの中心線CLの片側の面の
みで数も限定して記入してあるが、実施にあたつ
てはより多数のものが両面側に配設されているこ
とは言うまでもないし、更に前記凹面２ａは前記
中心線CLを回転軸とする回転凹面であるので前
記中心線CLを中心として円周上の適宜の位置に
配設されているものである。 What is shown in FIG. 1 represents the basic principle of the present invention, and shows light emitting diodes 1a, 1b, 1c.
are arranged on the substrate 2 formed on the concave surface 2a. In order to avoid unnecessarily complicating the figure, the number of light emitting diodes is limited to only one side of the center line CL of the concave surface 2a. It goes without saying that the concave surfaces 2a are arranged on both sides, and since the concave surface 2a is a rotating concave surface whose rotation axis is the center line CL, it is disposed at an appropriate position on the circumference with the center line CL as the center. It is something that
図に示すごとく発光ダイオード１ａは前記中心
線CL上に配設されていて、それ故にその光の放
射の方向は前記中心線CLと同軸である。次の発
光ダイオード１ｂは、前記凹面２ａを形成する曲
面を適宜に調節することで前記中心線CLと交点
f1で光軸の中心が交差するようにされていて、同
様に発光ダイオード１ｃは、交点f2で効軸の中心
が交差している。この中心線CLと発光ダイオー
ドの光軸の交差する位置の選定が、LEDランプ
の総合の配光特性を定めるものであり、特には前
記基板２に最近接したものが前記LEDランプの
光の方射角を決定する。以上述べた原理に従い該
LEDランプが100メートル遠方より読み取りを可
能なものとするならば前記LEDランプから最遠
の交差の点を100メートル付近に設け、放射角を
30度とするならば、前記の最近の交差の点の交差
角度を｛30度−（発光ダイオードの放射角／２）｝
とすれば良い。第２図に示すものは、以上に説明
したようにして得られた本発明に係るLEDラン
プの光の放射特性をグラフで示すもので、光軸上
（０度）に芯のある理想的な配光であることが理
解出来る。 As shown in the figure, the light emitting diode 1a is arranged on the center line CL, and therefore the direction of its light emission is coaxial with the center line CL. The next light-emitting diode 1b can be formed by appropriately adjusting the curved surface forming the concave surface 2a to form a point that intersects with the center line CL.
The centers of the optical axes intersect at f 1 , and similarly, the centers of the effective axes of the light emitting diode 1c intersect at the intersection f 2 . The selection of the position where this center line CL intersects with the optical axis of the light emitting diode determines the overall light distribution characteristics of the LED lamp. Determine the angle of incidence. According to the principles stated above,
If the LED lamp can be read from a distance of 100 meters, the farthest crossing point from the LED lamp should be set near 100 meters, and the radiation angle should be adjusted.
If it is 30 degrees, then the intersection angle of the most recent intersection point is {30 degrees - (radiation angle of light emitting diode / 2)}
It's fine. Figure 2 is a graph showing the light radiation characteristics of the LED lamp according to the present invention obtained as explained above. You can understand that it is a light distribution.
第３図は本発明を具体的にLEDランプとして
組立てた一実施例を示すものであり、前記で説明
したように組立てられた発光ダイオード１と基板
２はステム３にマウントされた後にガラスバルブ
４に封止され、前記ガラスバルブ４の内容には不
活性ガス５が封入された後に口金６が取付けられ
る。 FIG. 3 shows an embodiment in which the present invention is specifically assembled as an LED lamp, in which the light emitting diode 1 and the substrate 2 assembled as described above are mounted on the stem 3 and then attached to the glass bulb 4. After the glass bulb 4 is filled with an inert gas 5, a cap 6 is attached.
本発明によつて、発光ダイオードを回転凹面の
面上に配設したことによつて要求される光の放射
角が得られると共に、その配光には芯のあるもの
となり、より遠距離まで情報を告知することが出
来るものとなる。
According to the present invention, by arranging the light emitting diode on the surface of a rotating concave surface, the required radiation angle of light can be obtained, and the light distribution is centered, so that information can be transmitted over a longer distance. It will be possible to notify.
以上、詳細に説明したように、本発明により、
LEDランプに配設される発光ダイオードを凹面
状の基板に取付けたことにより広い角度で読み取
ることが出来、しかも表示内容を遠方まで到達出
来るようにして、この種の表示板の実用性を大き
く向上させる効果を奏するものである。
As explained above in detail, according to the present invention,
By attaching the light emitting diodes arranged in the LED lamp to a concave substrate, it can be read from a wide angle, and the displayed content can be seen over long distances, greatly improving the practicality of this type of display board. This has the effect of making
第１図は本発明に係るLEDランプの原理を示
す説明図、第２図は同じ本発明の特性を示すグラ
フ、第３図は同じ本発明の一実施例を示す断面
図、第４図は従来例を示す説明図である。
１，１ａ，１ｂ，１ｃ……発光ダイオード、２
……基板、３……ステム、４……ガラスバルブ、
５……不活性ガス、６……口金。
Fig. 1 is an explanatory diagram showing the principle of the LED lamp according to the present invention, Fig. 2 is a graph showing the characteristics of the same invention, Fig. 3 is a sectional view showing an embodiment of the same invention, Fig. 4 is FIG. 2 is an explanatory diagram showing a conventional example. 1, 1a, 1b, 1c... Light emitting diode, 2
...Substrate, 3...Stem, 4...Glass bulb,
5... Inert gas, 6... Base.
Claims (1)
ードを一体の基板に配設して一個のランプに形成
してある屋外用のLEDランプにおいて、前記一
体の基板が非球面である回転凹面に形成され、該
非球面の回転凹面に配設された前記複数個の発光
ダイオードの光の放射角の中心線は全て前記回転
凹面の中心線の延長線と交差していることを特徴
とする屋外用LEDランプ。1. In an outdoor LED lamp in which a plurality of light emitting diodes with a constant light emission angle are arranged on an integrated substrate to form a single lamp, the integrated substrate has an aspherical rotating concave surface. For outdoor use, the center line of the radiation angle of light of the plurality of light emitting diodes arranged on the aspherical rotating concave surface all intersects with an extension of the center line of the rotating concave surface. LED lamp.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP60264561A JPS62124781A (en) | 1985-11-25 | 1985-11-25 | Led lamp for outdoors |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP60264561A JPS62124781A (en) | 1985-11-25 | 1985-11-25 | Led lamp for outdoors |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS62124781A JPS62124781A (en) | 1987-06-06 |
| JPH0439237B2 true JPH0439237B2 (en) | 1992-06-26 |
Family
ID=17404988
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP60264561A Granted JPS62124781A (en) | 1985-11-25 | 1985-11-25 | Led lamp for outdoors |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS62124781A (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2712400B1 (en) * | 1993-11-09 | 1996-02-16 | Fas | Microfiche reader. |
| JP2008084990A (en) * | 2006-09-26 | 2008-04-10 | Matsushita Electric Works Ltd | Light-emitting apparatus and illumination appliance |
| JP6161872B2 (en) | 2011-07-14 | 2017-07-12 | 三菱電機照明株式会社 | LIGHT EMITTING DIODE LAMP, LIGHTING APPARATUS, AND LIGHT EMITTING DIODE LAMP |
| JP5840406B2 (en) | 2011-07-14 | 2016-01-06 | 三菱電機照明株式会社 | Light emitting diode lamp and lighting fixture |
-
1985
- 1985-11-25 JP JP60264561A patent/JPS62124781A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS62124781A (en) | 1987-06-06 |
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