JP2006144483A

JP2006144483A - Alternative led luminescence source for internally illuminating sign

Info

Publication number: JP2006144483A
Application number: JP2004339151A
Authority: JP
Inventors: Hitoshi Maruyama; 等圓山
Original assignee: Nippon Koki Kogyo Co Ltd
Current assignee: Nippon Koki Kogyo Co Ltd
Priority date: 2004-11-24
Filing date: 2004-11-24
Publication date: 2006-06-08

Abstract

<P>PROBLEM TO BE SOLVED: To provide a luminescence source which eliminates a problem of burning-out of a bulb and a need for maintenance (maintenance-free), and reduces the power consumption by replacing only the existing luminescence source while using an existing case of a sign. <P>SOLUTION: A circular light guide plate 10 has a central window part 12 which is formed by hollowing out a center part of the light guide plate in a manner of making a circle with a radius of about one third of that of the light guide plate. The light guide plate also has a plurality of rectangular housing window parts 14 for housing the source of luminescence. The rectangular housing window parts 14 are formed by hollowing out the outer side of the central window part 12 of the light guide plate in a direction being in contact with a concentric circle. The alternative LED luminescence source for an internally illuminating sign comprises the circular light guide plate 10, a first LED array 16a arranged toward the center side of the light guide plate and a second LED array 16b arranged toward the outer side of the light guide plate, of which the first and second LED arrays 16a, 16b are housed and held in each of the housing window parts. The circular light guide plate has a reflection sheet on its reverse face. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

本発明は、内部に光源を有する内照式標識に関し、さらに詳しくは、従来、内照式標識の光源として多用されていた蛍光管やネオン管の代替品として使用可能な代替ＬＥＤ発光源に関するものである。 The present invention relates to an internally illuminated sign having a light source therein, and more particularly to an alternative LED light source that can be used as a substitute for a fluorescent tube or a neon tube that has been widely used as a light source for an internally illuminated sign. It is.

従来より、屋外で使用される交通標識などの照明方式としては、蛍光管やネオン管などの光源を標識の内部に備え、標識の内側から表示面を照らす内照式の照明方式が多用されている。図５は、従来の蛍光管を使用した内照式標識１００の表示面１１０を外した状態での斜視図であり、筐体１２０の中央に蛍光管１３０が装着されている（例えば、特許文献１参照）。
特開２００２−６９９４６号公報（第２頁、第１０図） Conventionally, as an illumination method for traffic signs used outdoors, a light source such as a fluorescent tube or a neon tube is provided inside the sign, and an internally illuminated illumination method that illuminates the display surface from the inside of the sign has been widely used. Yes. FIG. 5 is a perspective view of the internally illuminated sign 100 using a conventional fluorescent tube with the display surface 110 removed, and a fluorescent tube 130 is mounted at the center of the housing 120 (for example, Patent Document 1). 1).
JP 2002-69946 (2nd page, FIG. 10)

ところが、上述したような蛍光管やネオン管などを用いた従来の内照式照明方式では、１）振動や衝撃が加わったり、劣化等によりネオン管や蛍光管内の結線やフィラメントが断線し使用不能となるいわゆる「玉切れの問題」、２）寿命が短く、定期的な保守点検、交換作業を必要とする「メンテナンスの問題」、３）放電現象を利用した発光であるため多くの電力を必要とする「消費電力の問題」、４）ネオン管や蛍光管の他にスタータランプや変圧器、安定器等の付属装置を必要とする「装置構成の複雑化」などの問題点が指摘されていた。 However, in the conventional internally-illuminated lighting system using a fluorescent tube or a neon tube as described above, 1) The connection or filament in the neon tube or the fluorescent tube is disconnected due to vibration or shock, or deterioration, and thus cannot be used. 2) “Maintenance problem” that requires short period of maintenance, inspection and replacement, and 3) Light emission using discharge phenomenon requires a lot of power "Problems of power consumption" 4) Problems such as "complexity of equipment configuration" that requires additional devices such as starter lamps, transformers and ballasts in addition to neon tubes and fluorescent tubes have been pointed out It was.

一方、ネオン管や蛍光管の寿命に比べて、標識を構成する筐体の寿命は長いため、既存の筐体を利用しつつ、上記の問題を解決することが嘱望されていた。 On the other hand, since the life of the casing constituting the sign is longer than that of the neon tube or the fluorescent tube, it has been desired to solve the above problem while using the existing housing.

そこで、本発明の目的は、既存の標識の筐体を利用しつつ、発光源のみを交換することによって、玉切れの問題を解消し、メンテナンスを不要（メンテナンスフリー）とし、消費電力の削減を図ることが可能な発光源を提供することにある。 Therefore, the object of the present invention is to eliminate the problem of running out of the ball by replacing only the light source while using the existing sign housing, making maintenance unnecessary (maintenance free) and reducing power consumption. It is an object of the present invention to provide a light source that can be realized.

上記目的を達成するため、本発明は、筐体内に蛍光管やネオン管を設置し、前記筐体の前面に設置した表示板を内側より照射する内照式標識の代替ＬＥＤ発光源であって、円形導光板が半径の略３分の１の半径の円で中央部がくりぬかれた中央窓部を有しており、その外側の導光板部分に１つの同心円に接する向きにくりぬかれた、複数の長方形の発光源収納窓部を有する前記円形導光板と、前記発光源収納窓部に収納保持され、導光板の中央側に向けて設置された第１のＬＥＤアレイと導光板の外周側に向けて設置された第２のＬＥＤアレイとを有し、前記円形導光板の裏面に反射シートを有することを特徴としている。 In order to achieve the above object, the present invention provides an alternative LED light source for an internally-illuminated sign, in which a fluorescent tube or a neon tube is installed in a housing, and a display plate installed on the front surface of the housing is irradiated from the inside. The circular light guide plate has a central window portion with a central portion hollowed by a circle having a radius of approximately one third of the radius, and the outer light guide plate portion is hollowed in a direction in contact with one concentric circle; The circular light guide plate having a plurality of rectangular light source storage window portions, the first LED array stored and held in the light source storage window portion and disposed toward the center side of the light guide plate, and the outer peripheral side of the light guide plate 2nd LED array installed toward the surface, and having a reflective sheet on the back surface of the circular light guide plate.

本発明によれば、筐体内に蛍光管やネオン管を設置し、前記筐体の前面に設置した表示板を内側より照射する内照式標識の代替ＬＥＤ発光源であって、円形導光板が半径の略３分の１の半径の円で中央部がくりぬかれた中央窓部を有しており、その外側の導光板部分に１つの同心円に接する向きにくりぬかれた、複数の長方形の発光源収納窓部を有する前記円形導光板と、前記発光源収納窓部に収納保持され、導光板の中央側に向けて設置された第１のＬＥＤアレイと導光板の外周側に向けて設置された第２のＬＥＤアレイとを有し、前記円形導光板の裏面に反射シートを有する構成にしているため、円形導光板の中央にくりぬかれた円形の中央窓部の側面から第１のＬＥＤアレイからの光が出光し、円形導光板の中央部が明るく照射される。また、第２のＬＥＤアレイから出光した光は、図４（ａ）に示すように、直線的に円形導光板に入り、外周側面から出光する際には、円形導光板の円周に沿って、拡散して出光される。そのため、図４（ｂ）のようにＬＥＤアレイによって、直接、筐体を照らす場合に比べて広い領域を照射でき、しかも、ＬＥＤの光線によって生じる明暗の差を減少させることができる。そのため、輝度むらを低減でき、筐体側面を満遍なく照射することができる。 According to the present invention, a fluorescent tube or a neon tube is installed in a housing, and it is an alternative LED light source for an internally illuminated sign that irradiates a display plate installed on the front surface of the housing from the inside. A plurality of rectangular light emission having a central window portion with a central portion hollowed out by a circle having a radius of approximately one third of the radius and hollowed in a direction in contact with one concentric circle on the outer light guide plate portion. The circular light guide plate having a source storage window portion, the first LED array stored and held in the light emission source storage window portion and installed toward the center side of the light guide plate, and the outer side of the light guide plate. The second LED array, and a reflection sheet on the back surface of the circular light guide plate, the first LED array from the side surface of the circular central window portion hollowed in the center of the circular light guide plate. The light from the light is emitted, and the central part of the circular light guide plate is illuminated brightlyFurther, as shown in FIG. 4A, the light emitted from the second LED array linearly enters the circular light guide plate, and emits light from the outer peripheral side surface along the circumference of the circular light guide plate. , Diffused and emitted. Therefore, as shown in FIG. 4 (b), the LED array can irradiate a wide area as compared with the case of directly illuminating the casing, and can reduce the difference in brightness caused by the light rays of the LED. Therefore, luminance unevenness can be reduced, and the side surface of the housing can be illuminated evenly.

したがって、従来の内照式標識の発光源であった蛍光管やネオン管に代えて、既存の筐体内に装着することによって、玉切れの問題を解消し、メンテナンスを不要（メンテナンスフリー）とし、消費電力の削減を図ることが可能となる。 Therefore, instead of the fluorescent tube and neon tube that were the light emission source of the conventional internally illuminated sign, by installing it in the existing housing, the problem of running out of the ball is solved and maintenance is unnecessary (maintenance-free). It is possible to reduce power consumption.

本発明の実施の形態について、図１乃至図３に基づいて説明する。図１は、本発明の代替ＬＥＤ発光源の正面図であり、図２は、図１に示した代替ＬＥＤ発光源を２−２線で切断したときの断面図である。図３は、蛍光管を使用する既存の内照式標識の発光源である蛍光管を取り外し、本発明による代替ＬＥＤ発光源を取り付けた場合の断面図である。 An embodiment of the present invention will be described with reference to FIGS. 1 to 3. FIG. 1 is a front view of an alternative LED light source of the present invention, and FIG. 2 is a cross-sectional view of the alternative LED light source shown in FIG. 1 taken along line 2-2. FIG. 3 is a cross-sectional view of a case where a fluorescent tube, which is a light source of an existing internally-illuminated marker using a fluorescent tube, is removed and an alternative LED light source according to the present invention is attached.

本発明の代替ＬＥＤ発光源は、図１及び図２に示すように、円形導光板１０が半径の略３分の１の半径の円で中央部がくりぬかれた中央窓部１２を有すると共に、その外側の導光板部分に１つの同心円に接する向きにくりぬかれた、複数の長方形の発光源収納窓部１４を有している。そして、発光源収納窓部１４に収納保持され、円形導光板１０の中央側に向けて設置された第１のＬＥＤアレイ１６ａと、円形導光板１０の外周側に向けて設置された第２のＬＥＤアレイ１６ｂとを有し、且つ、円形導光板１０の裏面に反射シート１８を有している。 As shown in FIGS. 1 and 2, the alternative LED light source of the present invention has a central light window 10 in which a circular light guide plate 10 is hollowed at a center of a circle having a radius of approximately one third of the radius, and A plurality of rectangular light source housing windows 14 are formed in the light guide plate portion on the outer side so as to be in contact with one concentric circle. And the 1st LED array 16a stored and hold | maintained at the light emission source storage window part 14, and was installed toward the center side of the circular light-guide plate 10, and the 2nd installed at the outer peripheral side of the circular light-guide plate 10 And a reflective sheet 18 on the back surface of the circular light guide plate 10.

図３において、符号１０は、本発明による代替ＬＥＤ発光源の円形導光板である。符号２０は、既存の内照式標識の筐体であり、符号３０は、筐体２０の前面に設置された表示板を示している。円形導光板１０は、既存の円形蛍光管（サークライン）と略同じ大きさを有しており、支柱２２によって、筐体２０に固定されている。筐体２０の内側は、白色の塗装が施してあり、ＬＥＤ（発光ダイオード）から放たれた光を反射させて、効率よく表示板３０を照射している。 In FIG. 3, reference numeral 10 denotes a circular light guide plate of an alternative LED light source according to the present invention. Reference numeral 20 denotes an existing internally-illuminated sign housing, and reference numeral 30 denotes a display board installed on the front surface of the housing 20. The circular light guide plate 10 has substantially the same size as an existing circular fluorescent tube (circular line), and is fixed to the housing 20 by a column 22. The inside of the housing 20 is painted white, and reflects the light emitted from the LED (light emitting diode) to efficiently irradiate the display board 30.

上述した、ＬＥＤ（発光ダイオード）アレイを発光源収納窓部１４に取り付ける方法については、特に限定されるものではないが、図１に示すように、発光源収納窓部１４の短辺側に溝部１０ａ、１０ｂを設けＬＥＤ（発光ダイオード）アレイを構成するエポキシ樹脂基板の両側部を係合させることにより、特別の保持部材を用いることなくＬＥＤ（発光ダイオード）アレイを発光源収納窓部１４の長辺に対峙して固定することができるため好ましい。 The method for attaching the LED (light emitting diode) array to the light source storage window portion 14 is not particularly limited. However, as shown in FIG. 10a and 10b are provided to engage both sides of the epoxy resin substrate constituting the LED (light emitting diode) array, so that the LED (light emitting diode) array can be made longer than the light source storage window portion 14 without using a special holding member. This is preferable because it can be fixed against the side.

なお、上記の実施例においては、発光源収納窓部１４を４つ設けているが、発光源収納窓部１４の数は、４つに限られるわけではなく、３つあるいは、５つ以上など円形導光板の大きさに応じて選択することが可能である。 In the above embodiment, four light source storage window portions 14 are provided. However, the number of light source storage window portions 14 is not limited to four, but three or five or more. It is possible to select according to the size of the circular light guide plate.

本発明による内照式標識の代替ＬＥＤ発光源によれば、これまで使われていた蛍光管やネオン管に代えて、取り付けるだけで、既存の内照式標識の玉切れの問題を解消し、メンテナンスを不要（メンテナンスフリー）とし、消費電力の削減を図ることができ、しかも、既存の内照式標識の筐体をそのまま利用可能である等、その産業上の利用可能性はきわめて高い。 According to the alternative LED light source of the internally illuminated sign according to the present invention, it is possible to replace the fluorescent tube or neon tube used so far, and solve the problem of running out of the existing internally illuminated sign, Maintenance can be eliminated (maintenance-free), power consumption can be reduced, and the existing interior-illuminated sign housing can be used as it is.

本発明の一実施例である代替ＬＥＤ発光源の正面図である。It is a front view of the alternative LED light source which is one Example of this invention. 図１に示した代替ＬＥＤ発光源の２−２線における断面図である。It is sectional drawing in the 2-2 line of the alternative LED light source shown in FIG. 図１に示した代替ＬＥＤ発光源を既存の内照式標識の筐体に装備した時の断面図である。It is sectional drawing when the alternative LED light emission source shown in FIG. 1 is equipped in the housing | casing of the existing internal illumination type | mold label | marker. 本発明により筐体側面を照射した場合（ａ）と、ＬＥＤアレイにより直接筐体側面を照射した場合（ｂ）の違いを説明する概念図である。It is a conceptual diagram explaining the difference between the case where the case side is irradiated according to the present invention (a) and the case where the case side is directly irradiated with the LED array (b). 従来の内照式標識を示した概略斜視図である。It is the schematic perspective view which showed the conventional internal illumination type | mold label | marker.

符号の説明Explanation of symbols

１０・・・円形導光板
１０ａ，１０ｂ・・・溝部
１２・・・中央窓部
１４・・・発光源収納窓部
１６ａ，１６ｂ・・・ＬＥＤ（発光ダイオード）アレイ
１８・・・反射シート
２０・・・筐体
２２・・・支柱
３０・・・表示体
DESCRIPTION OF SYMBOLS 10 ... Circular light-guide plate 10a, 10b ... Groove part 12 ... Center window part 14 ... Light source storage window part 16a, 16b ... LED (light emitting diode) array 18 ... Reflective sheet 20 ..Case 22 ... Prop 30 ... Display body

Claims

筐体内に蛍光管やネオン管を設置し、前記筐体の前面に設置した表示板を内側より照射する内照式標識の代替ＬＥＤ発光源であって、
円形導光板が半径の略３分の１の半径の円で中央部がくりぬかれた中央窓部を有しており、その外側の導光板部分に１つの同心円に接する向きにくりぬかれた、複数の長方形の発光源収納窓部を有する前記円形導光板と、
前記発光源収納窓部に収納保持され、導光板の中央側に向けて設置された第１のＬＥＤアレイと、導光板の外周側に向けて設置された第２のＬＥＤアレイとを有し、
前記円形導光板の裏面に反射シートを有すること
を特徴とする内照式標識の代替ＬＥＤ発光源。 A fluorescent tube or a neon tube is installed in the housing, and it is an alternative LED light source for an internally illuminated sign that irradiates the display plate installed on the front surface of the housing from the inside,
A circular light guide plate having a central window portion with a central portion hollowed by a circle having a radius of approximately one third of the radius, and a plurality of light guide plate portions that are hollowed in a direction in contact with one concentric circle on the outer light guide plate portion A circular light guide plate having a rectangular light source storage window portion;
The first LED array that is stored and held in the light source storage window portion and is set toward the center side of the light guide plate, and the second LED array that is set toward the outer peripheral side of the light guide plate,
An alternative LED light source for internally illuminated signs, comprising a reflective sheet on the back surface of the circular light guide plate.