JP5491278B2 - LED lamps used in place of pedestrian traffic light bulbs - Google Patents

LED lamps used in place of pedestrian traffic light bulbs Download PDF

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JP5491278B2
JP5491278B2 JP2010115822A JP2010115822A JP5491278B2 JP 5491278 B2 JP5491278 B2 JP 5491278B2 JP 2010115822 A JP2010115822 A JP 2010115822A JP 2010115822 A JP2010115822 A JP 2010115822A JP 5491278 B2 JP5491278 B2 JP 5491278B2
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健一 吉田
雅之 岡本
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Nihon Funen Co Ltd
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Description

本発明は、歩行者用信号機の電球に代わって使用される光源をLEDとするランプに関する。   The present invention relates to a lamp in which a light source used in place of a light bulb of a pedestrian traffic light is an LED.

交通信号機用のランプには電球が使用される。電球は発光効率が低いので、電力消費が大きい欠点がある。また、寿命が数千時間と短いことから、定期的に交換する必要があってメンテナンスに手間がかかる欠点もある。さらにメンテナンスを簡単にするために、電球の寿命を長く設計すると、発光効率が急激に低下して消費電力が大きくなる欠点がある。電球の発光効率と寿命とは互いに相反する特性であって、両者を同時に満足できない。この欠点を解決するために、交通用信号機に、電球に代わって使用されるLEDランプが開発されている。(特許文献1参照)   Light bulbs are used as lamps for traffic lights. Since the light bulb has low luminous efficiency, it has a drawback of high power consumption. In addition, since the lifetime is as short as several thousand hours, there is a drawback in that it is necessary to replace it regularly, and maintenance is troublesome. Further, in order to simplify the maintenance, if the life of the bulb is designed to be long, there is a drawback that the light emission efficiency is drastically lowered and the power consumption is increased. The luminous efficiency and lifetime of a light bulb are mutually contradictory characteristics, and both cannot be satisfied at the same time. In order to solve this drawback, LED lamps that are used in place of light bulbs in traffic signals have been developed. (See Patent Document 1)

特開平9−265807号公報JP 9-265807 A

特許文献1に記載される、交通用信号機に電球に代わって使用されるLEDランプは、図1に示すように、多数のLED92を筒体95の側面95Aと先端面95Bとに固定している。このLEDランプ91は、歩行者用信号機に電球に代わって使用されて、前面ガラス99の全面を均一な明るさに照射できない欠点がある。それは、筒体95の後端部に多数のLED92を固定して、先端部に固定しないからである。   As shown in FIG. 1, an LED lamp described in Patent Document 1 that is used in place of a light bulb for a traffic signal light has a large number of LEDs 92 fixed to a side surface 95 </ b> A and a front end surface 95 </ b> B. . This LED lamp 91 is used in place of a light bulb in a pedestrian traffic light, and has a drawback that it cannot irradiate the entire surface of the front glass 99 with uniform brightness. This is because a large number of LEDs 92 are fixed to the rear end portion of the cylindrical body 95 and are not fixed to the front end portion.

歩行者用信号機は、円形の凹面鏡であって、開口部の周囲を四角形としている反射鏡の中心に電球を配置している。電球に代わって図1に示すLEDランプ91がセットされると、前面ガラス99の中心部が明るく周囲が暗くなる。それは、図2に示すように、凹面鏡である反射鏡94を前面から見るとき、中心部の半径(r1)は、外周部の半径(r2)に比べて小さく、中心部から外周部に向かって次第に半径が大きくなるにもかかわらず、小さい中心部を多数のLED92で照射するからである。たとえば、図3に示すように、中心部の半径(r)に対して半径を2倍とする領域に、円周方向に同じ個数のLED82を配置すると、反射鏡84を前面から見た場合に、半径が大きくなる外周部において円周方向に並ぶLED82の間隔(d2)は、中心部において円周方向に配列されるLED82の間隔(d1)よりも広くなって暗くなり、前面ガラス99の明るさに斑ができる。   The pedestrian traffic light is a circular concave mirror, and a light bulb is arranged at the center of a reflecting mirror having a square around the opening. When the LED lamp 91 shown in FIG. 1 is set in place of the light bulb, the center of the front glass 99 is bright and the surroundings are dark. As shown in FIG. 2, when the reflecting mirror 94, which is a concave mirror, is viewed from the front, the radius (r1) of the central portion is smaller than the radius (r2) of the outer peripheral portion, and from the central portion toward the outer peripheral portion. This is because a large number of LEDs 92 irradiate a small central portion even though the radius gradually increases. For example, as shown in FIG. 3, when the same number of LEDs 82 are arranged in the circumferential direction in a region where the radius is twice as large as the radius (r) of the central portion, when the reflecting mirror 84 is viewed from the front surface. The distance (d2) between the LEDs 82 arranged in the circumferential direction in the outer peripheral portion where the radius increases is wider and darker than the interval (d1) between the LEDs 82 arranged in the circumferential direction in the central portion, and the brightness of the front glass 99 is increased. Spots appear on the surface.

本発明は、この欠点を解決することを目的に開発されたものである。本発明の重要な目的は、複数のLEDでもって歩行者用信号機の前面ガラスを均一に明るく照射できる歩行者用信号機に電球に代わって使用されるLEDランプを提供することにある。   The present invention has been developed for the purpose of solving this drawback. An important object of the present invention is to provide an LED lamp used in place of a light bulb in a pedestrian traffic light that can uniformly and brightly illuminate the front glass of a pedestrian traffic light with a plurality of LEDs.

課題を解決するための手段及び発明の効果Means for Solving the Problems and Effects of the Invention

本発明の歩行者用信号機の電球に代わって使用されるLEDランプは、表面で光を反射する凹面鏡40であって開口部43を四角形としてなる反射器4の中心部に設けてなるソケット5にねじ込んで交換自在に連結される、光源をLED2とするLEDランプである。LEDランプは、ソケット5にねじ込んで連結される外周に雄ネジ12を設けてなる連結部11と、この連結部11に固定してなる複数のLED2を備えるランプ本体10とからなる。ランプ本体10は、長方形である複数枚の側面基板15Aを多角形の筒状に配置し、かつ先端面を前面基板15Bで閉塞してなる多角筒体15を備えている。この多角筒体15は、その中心軸を連結部11の雄ネジ12と同軸に配置して、側面基板15Aと前面基板15Bの表面に複数のLED2を固定している。さらに、側面基板15Aは、長手方向に離して複数のLED2を固定しており、幅方向に配置されるLED2の個数を、後端よりも先端に多くしている。   The LED lamp used in place of the light bulb for the pedestrian traffic light of the present invention is a concave mirror 40 that reflects light on the surface, and the socket 5 is provided in the center of the reflector 4 having a rectangular opening 43. It is an LED lamp in which the light source is LED2, which is screwed and connected in a replaceable manner. The LED lamp includes a connecting portion 11 provided with a male screw 12 on the outer periphery thereof screwed into the socket 5 and a lamp body 10 including a plurality of LEDs 2 fixed to the connecting portion 11. The lamp body 10 includes a polygonal cylindrical body 15 in which a plurality of rectangular side substrates 15A are arranged in a polygonal cylinder, and the front end surface is closed with a front substrate 15B. The polygonal cylinder 15 has a central axis coaxially arranged with the male screw 12 of the connecting portion 11 and fixes the plurality of LEDs 2 on the surfaces of the side substrate 15A and the front substrate 15B. Further, the side substrate 15A fixes a plurality of LEDs 2 apart in the longitudinal direction, and the number of LEDs 2 arranged in the width direction is larger at the front end than at the rear end.

以上のLEDランプは、複数のLEDでもって歩行者用信号機の前面ガラスを均一に明るく照射できる特徴がある。それは、長方形である複数枚の側面基板を多角形の筒状に配置して、その先端面を前面基板で閉塞して多角筒体とし、側面基板と前面基板の表面に複数のLEDを固定し、さらに側面基板には、長手方向に離して複数のLEDを固定して、幅方向に配置するLEDの個数を、後端よりも先端に多くしているからである。   The above LED lamp has the characteristic that the front glass of the pedestrian traffic light can be uniformly and brightly illuminated by a plurality of LEDs. It arranges a plurality of rectangular side substrates in a polygonal cylinder shape, closes the front end surface with a front substrate to form a polygonal cylinder, and fixes a plurality of LEDs on the surface of the side substrate and the front substrate. Further, this is because a plurality of LEDs are fixed to the side surface substrate apart in the longitudinal direction, and the number of LEDs arranged in the width direction is increased at the front end than at the rear end.

本発明のLEDランプは、側面基板15Aに、長手方向に離して3列にLED2を配置し、先端側に位置する第1列には2個又は3個のLED2を横方向に離して配置し、後端側に配置される第3列には1個のLED2を配置することができる。
さらに、本発明のLEDランプは、側面基板15Aが、第1列に2個又は3個、第2列に2個、第3列には1個のLED2を配置することができる。
以上のLEDランプは、少ない数のLEDで歩行者用信号機の前面ガラスを均一に明るく照射できる。
In the LED lamp of the present invention, LEDs 2 are arranged in three rows on the side substrate 15A in the longitudinal direction, and two or three LEDs 2 are arranged in the lateral direction in the first row located on the tip side. In the third row arranged on the rear end side, one LED 2 can be arranged.
Furthermore, in the LED lamp of the present invention, two or three side substrates 15A can be arranged in the first row, two in the second row, and one LED 2 in the third row.
The above LED lamps can uniformly and brightly illuminate the front glass of a pedestrian traffic light with a small number of LEDs.

本発明のLEDランプは、多角筒体15を五角形以上の多角形とすることができる。
以上のLEDランプは、反射器に連結する位置を問わず、開口部を四角形とする反射器の全面を均一に明るく照射できる。
In the LED lamp of the present invention, the polygonal cylindrical body 15 can be a pentagon or more polygon.
The above LED lamp can uniformly and brightly illuminate the entire surface of the reflector having a rectangular opening regardless of the position where it is connected to the reflector.

本発明のLEDランプは、ランプ本体10が、連結部11に一体構造の基板ホルダ20を備えて、この基板ホルダ20に側面基板15Aの後端部を連結することができる。側面基板15Aは、基板ホルダ20に係止される係止凹部15aを後端から前方に離れた位置に有し、基板ホルダ20は、側面基板15Aの背面に位置する連結壁23を有すると共に、側面基板15Aの後端を挿入して連結する嵌入部27を有し、さらに、連結壁23は、側面基板15Aに設けている係止凹部15aに案内される係止凸部23aを有し、後端が嵌入部27に案内された側面基板15Aの係止凹部15aに、基板ホルダ20の係止凸部23aを案内して側面基板15Aを抜けない状態で基板ホルダ20に連結することができる。さらに、前面基板15Bには、側面基板15Aの先端を挿入する連結穴15cを設けて、側面基板15Aの先端を前面基板15Bの連結穴15cに挿入して、側面基板15Aを基板ホルダ20に連結することができる。
以上のLEDランプは、簡単かつ容易に、しかも振動などを受けても側面基板を外れないように基板ホルダに連結できる特徴がある。
In the LED lamp of the present invention, the lamp body 10 includes a substrate holder 20 having an integral structure in the connecting portion 11, and the rear end portion of the side substrate 15 </ b> A can be connected to the substrate holder 20. The side substrate 15A has a locking recess 15a that is locked to the substrate holder 20 at a position away from the rear end, and the substrate holder 20 has a connecting wall 23 positioned on the back surface of the side substrate 15A. The side wall 15A has a fitting portion 27 for inserting and connecting the rear end thereof, and the connecting wall 23 has a locking projection 23a guided by a locking recess 15a provided on the side substrate 15A, The locking protrusion 15a of the substrate holder 20 can be guided to the locking recess 15a of the side substrate 15A, the rear end of which is guided by the insertion portion 27, and can be connected to the substrate holder 20 in a state where the side substrate 15A cannot be removed. . Further, the front substrate 15B is provided with a connection hole 15c for inserting the front end of the side substrate 15A, and the front end of the side substrate 15A is inserted into the connection hole 15c of the front substrate 15B to connect the side substrate 15A to the substrate holder 20. can do.
The above LED lamp has a feature that it can be easily and easily connected to the substrate holder so that the side substrate does not come off even when subjected to vibration.

本発明のLEDランプは、多角筒体15に連結してなる複数のLED2を直列に接続すると共に、直列接続しているLED2と並列に接続してなる、LED2の異常時にON状態となるバイパス回路6を備えて、LED2の異常時にバイパス回路6をオン状態として、直列接続してなる他のLED2を点灯することができる。
以上のLEDランプは、いずれかのLEDが故障しても全体のLEDが消灯されず、安全に歩行者用信号機を内部から照射できる特徴がある。
The LED lamp of the present invention connects a plurality of LEDs 2 connected to a polygonal cylinder 15 in series and is connected in parallel with the LEDs 2 connected in series, and is a bypass circuit that is turned on when the LED 2 is abnormal. 6, when the LED 2 is abnormal, the bypass circuit 6 can be turned on to turn on another LED 2 connected in series.
The above LED lamp has the feature that even if any LED fails, the entire LED is not turned off and the pedestrian traffic light can be safely irradiated from the inside.

本発明のLEDランプは、バイパス回路6を複数のLED2の直列回路と並列に、又はひとつのLED2と並列に接続し、かつ、バイパス回路6を並列に接続してなるLED2の個数を、側面基板15Aの先端部で後端部よりも多くすることができる。
以上のLEDランプは、いずれかのLEDが故障しても、前面ガラスの明るさの斑を少なくできる特徴がある。
In the LED lamp of the present invention, the bypass circuit 6 is connected in parallel with a series circuit of a plurality of LEDs 2 or in parallel with one LED 2 and the number of LEDs 2 formed by connecting the bypass circuit 6 in parallel is determined by the side board. More than the rear end portion at the front end portion of 15A.
The above LED lamp has the feature that even if any LED breaks down, the brightness spots on the front glass can be reduced.

本発明のLEDランプは、多角筒体15が、互いに隣接する側面基板15Aの間に冷却隙間28を設けることができる。
以上のLEDランプは、冷却隙間に空気を対流させて、側面基板に配置されるLEDを効率よく冷却できる特徴がある。
In the LED lamp of the present invention, the polygonal cylinder 15 can be provided with a cooling gap 28 between the side substrates 15A adjacent to each other.
The above LED lamp has the characteristic that the LED arrange | positioned on a side board | substrate can be efficiently cooled by making air convect through a cooling gap.

本発明のLEDランプは、基板ホルダ20に多角筒体15をカバーする透明カバー16を連結すると共に、この透明カバー16には、多角筒体15を構成する側面基板15Aの間に設けた冷却隙間28と対向する位置に換気口17を設けることができる。
以上のLEDランプは、多角筒体をカバーする透明カバーに、多角筒体の冷却隙間と対向する換気口を設けているので、側面基板の間の冷却隙間に流れる空気流を透明カバーの外部にスムーズに換気して、側面基板やLEDの発熱を効率よく冷却できる特徴がある。
The LED lamp of the present invention connects a transparent cover 16 that covers the polygonal cylinder 15 to the substrate holder 20, and a cooling gap provided between the side substrates 15 </ b> A constituting the polygonal cylinder 15 in the transparent cover 16. Ventilation opening 17 can be provided at a position facing 28.
In the above LED lamp, the transparent cover that covers the polygonal cylinder is provided with a ventilation port that faces the cooling gap of the polygonal cylinder, so that the airflow that flows through the cooling gap between the side substrates is transferred to the outside of the transparent cover. It has the feature that it can ventilate smoothly and cool the heat generation of the side board and LED efficiently.

本発明のLEDランプは、基板ホルダ20に多角筒体15をカバーする透明カバー16を連結し、透明カバー16の先端部の表面を、光を乱反射する無数の凹凸面として、先端部を除く部分を、表面を平滑面とすることができる。
以上のLEDランプは、点光源のLEDを使用しながら、前面ガラスを輝度斑なく明るく照射できる特徴がある。
In the LED lamp of the present invention, a transparent cover 16 that covers the polygonal cylinder 15 is connected to the substrate holder 20, and the surface of the front end portion of the transparent cover 16 is an infinite number of irregular surfaces that diffusely reflect light. The surface can be made smooth.
The above LED lamp has the feature that it can irradiate the front glass brightly without luminance unevenness while using the point light source LED.

従来の歩行者用信号機の断面図である。It is sectional drawing of the conventional traffic signal for pedestrians. 図1に示す歩行者用信号機の反射鏡を前面から見た図である。It is the figure which looked at the reflective mirror of the traffic signal for pedestrians shown in FIG. 1 from the front. 従来の歩行者用信号機の反射鏡の中心部と外周部に同数のLEDが配置される状態を示す図である。It is a figure which shows the state by which the same number of LED is arrange | positioned at the center part and outer peripheral part of the reflective mirror of the conventional pedestrian traffic light. 本発明の一実施例にかかるLEDランプを電球に代わって使用する歩行者用信号機の一例を示す分解斜視図である。It is a disassembled perspective view which shows an example of the pedestrian traffic light which uses the LED lamp concerning one Example of this invention instead of a light bulb. 図4に示す歩行者用信号機の反射器の背面斜視図である。It is a back perspective view of the reflector of the traffic signal for pedestrians shown in FIG. 図4に示す歩行者用信号機の反射器からランプホルダを取り外した状態を示す分解斜視図である。It is a disassembled perspective view which shows the state which removed the lamp holder from the reflector of the traffic signal for pedestrians shown in FIG. 図5に示す反射器からランプホルダを取り外した状態を示す分解斜視図である。It is a disassembled perspective view which shows the state which removed the lamp holder from the reflector shown in FIG. 図4に示す歩行者用信号機の反射器とランプホルダの連結構造を示す水平断面図である。It is a horizontal sectional view which shows the connection structure of the reflector of the pedestrian traffic light shown in FIG. 4, and a lamp holder. 図8に示すLEDランプとランプホルダの連結構造を示す断面図である。It is sectional drawing which shows the connection structure of the LED lamp and lamp holder shown in FIG. 図9に示すLEDランプとランプホルダの断面図である。It is sectional drawing of the LED lamp and lamp holder shown in FIG. 図9に示すLEDランプの透明カバーを取り除いた図である。It is the figure which removed the transparent cover of the LED lamp shown in FIG. 図10に示すLEDランプのXII−XII線断面図である。It is the XII-XII sectional view taken on the line of the LED lamp shown in FIG. 図11に示すLEDランプの多角筒体の分解斜視図である。It is a disassembled perspective view of the polygonal cylinder of the LED lamp shown in FIG. 図8に示す歩行者用信号機の反射器を前面から見た状態を示す図であって、凹面鏡に映るLEDの配置を示す図である。It is a figure which shows the state which looked at the reflector of the traffic signal for pedestrians shown in FIG. 8 from the front, Comprising: It is a figure which shows arrangement | positioning of LED reflected on a concave mirror. 本発明の他の実施例にかかるLEDランプの透明カバーを取り除いた図である。It is the figure which removed the transparent cover of the LED lamp concerning the other Example of this invention. 図15に示すLEDランプを備える歩行者用信号機の反射器を前面から見た状態を示す図であって、凹面鏡に映るLEDの配置を示す図である。It is a figure which shows the state which looked at the reflector of the traffic signal for pedestrians provided with the LED lamp shown in FIG. 15 from the front, Comprising: It is a figure which shows arrangement | positioning of LED reflected on a concave mirror. 本発明の一実施例にかかるLEDランプの概略回路図である。It is a schematic circuit diagram of the LED lamp concerning one Example of this invention. 複数のLEDを前面基板と側面基板に配置する状態を示す図である。It is a figure which shows the state which arrange | positions several LED on a front substrate and a side substrate. バイパス回路の原理を示す回路図である。It is a circuit diagram which shows the principle of a bypass circuit.

以下、本発明の実施例を図面に基づいて説明する。ただし、以下に示す実施例は、本発明の技術思想を具体化するための歩行者用信号機に電球に代わって使用されるLEDランプを例示するものであって、本発明はLEDランプを以下のものに特定しない。さらに、この明細書は、特許請求の範囲を理解しやすいように、実施例に示される部材に対応する番号を、「特許請求の範囲」および「課題を解決するための手段の欄」に示される部材に付記している。ただ、特許請求の範囲に示される部材を、実施例の部材に特定するものでは決してない。   Embodiments of the present invention will be described below with reference to the drawings. However, the embodiment shown below exemplifies an LED lamp used in place of a light bulb in a pedestrian traffic light for embodying the technical idea of the present invention. Not specific. Further, in this specification, in order to facilitate understanding of the scope of claims, numbers corresponding to the members shown in the examples are indicated in the “claims” and “means for solving problems” sections. It is added to the members. However, the members shown in the claims are not limited to the members in the embodiments.

本発明のLEDランプを使用してなる歩行者用信号機を図4ないし図8に示す。LEDランプ1は、反射器4の中心部に設けているソケット5に、電球に代わって交換できるように連結される。図の歩行者用信号機は、ランプホルダ3を介してソケット5を反射器4に連結している。   A pedestrian traffic light using the LED lamp of the present invention is shown in FIGS. The LED lamp 1 is connected to a socket 5 provided at the center of the reflector 4 so that it can be replaced in place of a light bulb. In the illustrated pedestrian traffic light, a socket 5 is connected to a reflector 4 via a lamp holder 3.

歩行者用信号機は、表面で光を反射する反射器4の中心部に脱着穴41を設けて、この脱着穴41に、ソケット5を連結しているランプホルダ3を脱着できるように連結している。LEDランプ1は、直接には反射器4に連結されず、ソケット5を設けているランプホルダ3に交換できるように連結される。歩行者用信号機は、LEDランプ1を交換するときにランプホルダ3を反射器4から外す。反射器4から外されたランプホルダ3は、ソケット5に連結している古い電球を外し、電球に代わってLEDランプ1を連結する。ソケット5に新しいLEDランプ1を連結する状態で、ランプホルダ3は反射器4の脱着穴41に連結される。図6と図7は、反射器4から外したランプホルダ3とLEDランプ1を示している。   The pedestrian traffic light is provided with an attachment / detachment hole 41 at the center of the reflector 4 that reflects light on the surface, and the attachment / detachment hole 41 is connected so that the lamp holder 3 connecting the socket 5 can be attached / detached. Yes. The LED lamp 1 is not directly connected to the reflector 4 but connected to the lamp holder 3 provided with the socket 5 so as to be exchanged. The pedestrian traffic light removes the lamp holder 3 from the reflector 4 when replacing the LED lamp 1. The lamp holder 3 removed from the reflector 4 removes the old light bulb connected to the socket 5 and connects the LED lamp 1 in place of the light bulb. With the new LED lamp 1 connected to the socket 5, the lamp holder 3 is connected to the attachment / detachment hole 41 of the reflector 4. 6 and 7 show the lamp holder 3 and the LED lamp 1 removed from the reflector 4.

反射器4は、表面で光を反射する凹面鏡40であって、開口部43を四角形としている。反射器4は金属板をプレス加工して製作され、内面にクロームメッキなどの金属メッキをして、光を効率よく反射するようにしている。凹面鏡40の反射器4は、球面ないし放物面の形状とし、かつ開口縁部には四角形の垂直面44を設けて、開口部43を四角形としている。垂直面44は、球面ないし放物面に設けられるので、その境界はアーチ状となる。四角形の開口部43は、図8に示すように、パッキン48、49を介して四角形の前面ガラス9で水密構造に密閉される。図の前面ガラス9は、前面に配置される透明ガラス9Aの内側に、青色(または緑色)や赤色に着色されたフィルター9Bを積層している。透明ガラス9Aとフィルター9Bの積層体である前面ガラス9は、外周縁に沿って、断面形状を溝側とするリング状のパッキン48を被覆している。さらに、パッキン48で被覆された前面ガラス9の外周部を、反射器4の開口部43に設けた段差部45の内側に嵌合させる状態で挿入している。さらに、前面ガラス9の外周部が嵌入された段差部45の外側を、断面形状を溝側とするリング状のパッキン49で被覆して水密構造に密閉している。   The reflector 4 is a concave mirror 40 that reflects light on the surface, and the opening 43 has a quadrangular shape. The reflector 4 is manufactured by pressing a metal plate, and the inner surface is plated with metal such as chrome plating so as to reflect light efficiently. The reflector 4 of the concave mirror 40 has a spherical or parabolic shape, a rectangular vertical surface 44 is provided at the opening edge, and the opening 43 is rectangular. Since the vertical surface 44 is provided on a spherical surface or a parabolic surface, the boundary thereof has an arch shape. As shown in FIG. 8, the rectangular opening 43 is sealed in a watertight structure with a rectangular front glass 9 via packings 48 and 49. In the illustrated front glass 9, a filter 9B colored in blue (or green) or red is laminated inside a transparent glass 9A disposed on the front surface. Front glass 9, which is a laminate of transparent glass 9A and filter 9B, covers ring-shaped packing 48 having a cross-sectional shape on the groove side along the outer peripheral edge. Further, the outer peripheral portion of the front glass 9 covered with the packing 48 is inserted in a state of being fitted inside the stepped portion 45 provided in the opening 43 of the reflector 4. Further, the outside of the stepped portion 45 in which the outer peripheral portion of the front glass 9 is fitted is covered with a ring-shaped packing 49 having a cross-sectional shape as a groove side, and is sealed in a watertight structure.

凹面鏡40の反射器4は、その中心にランプホルダ3を挿入する脱着穴41を設けている。脱着穴41は、ランプホルダ3を連結する円筒状の筒状突出部42を外側に突出して設けている。円筒状の筒状突出部42は四角形の垂直面44を含む方向に突出しており、この内側にランプホルダ3が挿入される。筒状突出部42の内形は、ランプホルダ3の外形にほぼ等しく、ランプホルダ3を、円筒状の筒状突出部42である周壁の内側に挿入して、定位置に連結できる構造としている。周壁にランプホルダ3が挿入して連結され、このランプホルダ3にLEDランプ1が連結される。筒状突出部42は、LEDランプ1や電球を挿通できる大きさとしている。   The reflector 4 of the concave mirror 40 is provided with an attachment / detachment hole 41 for inserting the lamp holder 3 at the center thereof. The attachment / detachment hole 41 is provided with a cylindrical tubular projecting portion 42 that connects the lamp holder 3 so as to project outward. The cylindrical tubular projecting portion 42 projects in a direction including the rectangular vertical surface 44, and the lamp holder 3 is inserted into the inside. The inner shape of the cylindrical projecting portion 42 is substantially equal to the outer shape of the lamp holder 3, and the lamp holder 3 is inserted into the inside of the peripheral wall that is the cylindrical tubular projecting portion 42 and can be connected to a fixed position. . The lamp holder 3 is inserted and connected to the peripheral wall, and the LED lamp 1 is connected to the lamp holder 3. The cylindrical protrusion 42 has a size that allows the LED lamp 1 and the light bulb to be inserted.

ランプホルダ3は、金属板をプレス加工して製作される。ランプホルダ3は、反射器4の中心に、後方に突出するように設けている筒状突出部42の内側に挿入して連結される円筒状の連結筒部32を有する。この連結筒部32の前面は、反射器4の脱着穴41を閉塞するリングプレート31を設けている。さらにリングプレート31には、中心に内側筒体33を連結してランプホルダ3に中心孔34を設けている。中心孔34を構成する内側筒体33の後端、すなわち中心孔34の底部には、電球をねじ込んで連結するソケット5を固定している。ソケット5は、電球の雄ネジ12をねじ込んで連結するために、内面に雌ネジ52を設けている。   The lamp holder 3 is manufactured by pressing a metal plate. The lamp holder 3 has a cylindrical connecting cylinder portion 32 that is inserted into and connected to the inside of a cylindrical protruding portion 42 provided at the center of the reflector 4 so as to protrude rearward. A ring plate 31 that closes the attachment / detachment hole 41 of the reflector 4 is provided on the front surface of the connecting cylinder portion 32. Further, the ring plate 31 is provided with a center hole 34 in the lamp holder 3 by connecting an inner cylinder 33 at the center. A socket 5 to which a light bulb is screwed and connected is fixed to the rear end of the inner cylinder 33 constituting the center hole 34, that is, the bottom of the center hole 34. The socket 5 is provided with a female screw 52 on the inner surface in order to screw and connect the male screw 12 of the bulb.

以上の歩行者用信号機は、以下のようにしてランプを交換する。
(1)図6と図7に示すように、ランプホルダ3を反射器4の筒状突出部42から引き抜いて反射器4から外す。
(2)反射器4から外された状態で、ランプホルダ3のランプを新しいものに交換する。
(3)その後、ランプホルダ3の連結筒部32を反射器4の筒状突出部42に挿入して、反射器4に連結する。ランプホルダ3を反射器4の開口部41に挿入する状態で、ランプホルダ3を固定するために、反射器4には弾性バネからなる連結具8を設けている。
In the above pedestrian traffic light, the lamp is replaced as follows.
(1) As shown in FIGS. 6 and 7, the lamp holder 3 is pulled out from the cylindrical protrusion 42 of the reflector 4 and removed from the reflector 4.
(2) Replace the lamp of the lamp holder 3 with a new one while being removed from the reflector 4.
(3) Thereafter, the connecting cylinder portion 32 of the lamp holder 3 is inserted into the cylindrical protrusion 42 of the reflector 4 and connected to the reflector 4. In order to fix the lamp holder 3 in a state where the lamp holder 3 is inserted into the opening 41 of the reflector 4, the reflector 4 is provided with a connector 8 made of an elastic spring.

以上のようにして、電球に代わって使用される、すなわち電球から交換されるLEDランプ1は、図9ないし図13に示すように、ランプホルダ3のソケット5にねじ込んで連結される連結部11と、この連結部11に固定しているランプ本体10とを備える。連結部11は、外周に雄ネジ12を設けて、ソケット5の雌ネジ52にねじ込んで連結できるようにしている。さらに、連結部11は電球と同じように、外周面と先端とに、互いに絶縁して電極13、14を設けている。   As described above, the LED lamp 1 that is used in place of the light bulb, that is, replaced by the light bulb, is connected to the socket 5 of the lamp holder 3 by screwing as shown in FIGS. 9 to 13. And a lamp body 10 fixed to the connecting portion 11. The connecting portion 11 is provided with a male screw 12 on the outer periphery so that it can be screwed into a female screw 52 of the socket 5. Further, like the light bulb, the connecting portion 11 is provided with electrodes 13 and 14 on the outer peripheral surface and the tip so as to be insulated from each other.

ランプ本体10は、連結部11に一体構造の基板ホルダ20を備え、この基板ホルダ20の前方に、側面基板15A及び前面基板15Bからなる多角筒体15を固定している。多角筒体15の側面基板15Aと前面基板15Bは、その表面に複数のLED2を固定している。さらに、多角筒体15をカバーするように基板ホルダ20に透明カバー16を連結している。   The lamp body 10 includes a substrate holder 20 having an integral structure at the connecting portion 11, and a polygonal cylinder 15 including a side substrate 15 </ b> A and a front substrate 15 </ b> B is fixed in front of the substrate holder 20. The side substrate 15A and the front substrate 15B of the polygonal cylinder 15 have a plurality of LEDs 2 fixed on their surfaces. Further, the transparent cover 16 is connected to the substrate holder 20 so as to cover the polygonal cylinder 15.

基板ホルダ20は、ランプホルダ3の中心孔34に挿入される円柱状の挿入部21の一端に、円盤状の鍔部22を連結してなる形状にプラスチックで一体成形している。挿入部21は、ランプホルダ3の中心孔34に挿入できるように、その外形を中心孔34の外形より小さくしている。中心孔34に挿入される挿入部21は、その先端に、連結部11を被せて固定している。   The substrate holder 20 is integrally formed of plastic in a shape formed by connecting a disc-shaped flange portion 22 to one end of a columnar insertion portion 21 inserted into the center hole 34 of the lamp holder 3. The outer shape of the insertion portion 21 is smaller than the outer shape of the center hole 34 so that the insertion portion 21 can be inserted into the center hole 34 of the lamp holder 3. The insertion portion 21 to be inserted into the center hole 34 is fixed by covering the connecting portion 11 at the tip thereof.

鍔部22は、多角筒体15の側面基板15Aを固定している。図の鍔部22は、前面から突出する連結壁23を設けている。連結壁23は、側面基板15Aの背面側に位置して設けている。さらに、鍔部22は、連結壁23に対向して嵌着凸部26を設けており、連結壁23と嵌着凸部26との間を、側面基板15Aの後端を挿入して連結する嵌入部27としている。嵌入部27は、側面基板15Aを挿入して定位置に配置するので、その間隔を側面基板15Aの厚さにほぼ等しく、正確には側面基板15Aの厚さよりもわずかに広くしている。   The flange 22 fixes the side substrate 15A of the polygonal cylinder 15. The flange portion 22 in the figure is provided with a connecting wall 23 protruding from the front surface. The connecting wall 23 is provided on the back side of the side substrate 15A. Further, the flange portion 22 is provided with a fitting convex portion 26 so as to face the connecting wall 23, and the connecting wall 23 and the fitting convex portion 26 are connected by inserting the rear end of the side substrate 15A. The insertion portion 27 is used. Since the insertion portion 27 is inserted into the side substrate 15A and disposed at a fixed position, the interval is substantially equal to the thickness of the side substrate 15A, and more precisely, slightly larger than the thickness of the side substrate 15A.

図12と図13のLEDランプ1は、6枚の側面基板15Aを六角筒状に配置して、多角筒体15を六角筒状としている。したがって、基板ホルダ20には、六角筒状に連結壁23を配置して、その外側に嵌着凸部26を設けている。   In the LED lamp 1 of FIGS. 12 and 13, six side substrates 15 </ b> A are arranged in a hexagonal cylinder, and the polygonal cylinder 15 is in a hexagonal cylinder. Therefore, the connection wall 23 is arranged in a hexagonal cylinder shape on the substrate holder 20, and the fitting convex portion 26 is provided on the outside thereof.

嵌入部27に挿入された側面基板15Aを抜けないように連結するために、連結壁23は、側面基板15Aの係止凹部15aに案内される係止凸部23aを設けている。図13の側面基板15Aは両側に係止凹部15aを設けているので、連結壁23の両側に係止凸部23aを設けている。側面基板15Aは、後端から前方に離れた位置に係止凹部15aを設けているので、係止凸部23aはこの係止凹部15aを案内される位置に配置される。後端を嵌入部27に挿入している側面基板15Aは、係止凹部15aに係止凸部23aを案内して、基板ホルダ20に抜けないように連結される。ただ、側面基板15Aは、傾く姿勢で基板ホルダ20から抜ける、いいかえると、傾ける姿勢で後端を嵌入部27に挿入し、その後、鍔部22に対して垂直姿勢として、係止凹部15aに係止凸部23aを案内して抜けない状態となる。側面基板15Aは、先端を前面基板15Bに連結して、互いに傾斜しないように連結される。   In order to connect the side substrate 15A inserted into the fitting portion 27 so as not to come off, the connecting wall 23 is provided with a locking projection 23a guided by the locking recess 15a of the side substrate 15A. Since the side substrate 15A of FIG. 13 is provided with the locking recesses 15a on both sides, the locking projections 23a are provided on both sides of the connecting wall 23. Since the side substrate 15A is provided with a locking recess 15a at a position away from the rear end in the forward direction, the locking projection 23a is disposed at a position where the locking recess 15a is guided. The side substrate 15A having the rear end inserted into the insertion portion 27 is connected to the substrate holder 20 so as not to come out by guiding the locking projection 23a to the locking recess 15a. However, the side substrate 15A is detached from the substrate holder 20 in a tilted posture. In other words, the rear end is inserted into the fitting portion 27 in a tilted posture, and then is engaged with the locking recess 15a in a vertical posture with respect to the flange portion 22. It will be in the state which guides the stop convex part 23a and cannot be removed. The side substrate 15A is connected so as not to be inclined with respect to the front substrate 15B at the tip.

側面基板15Aを多角筒体15に固定するために、前面基板15Bは、図13に示すように、側面基板15Aの先端を挿入する連結穴15cを設けている。図の側面基板15Aは、先端部に複数の連結突出部15bを設けているので、前面基板15Bには各々の連結突出部15bを挿入して連結する複数の連結穴15cを設けている。側面基板15Aの先端に設けた連結突出部15bが前面基板15Bの連結穴15cに挿入されて、側面基板15Aはその先端が互いに連結される。この状態で、六角筒状の多角筒体15を構成する6枚の側面基板15Aは、その先端が広がらないように、すなわち傾動しない状態で基板ホルダ20に連結される。傾動しない側面基板15Aは、係止凹部15aに係止凸部23aが案内されて、基板ホルダ20に抜けないように固定される。   In order to fix the side substrate 15A to the polygonal cylinder 15, the front substrate 15B is provided with a connecting hole 15c into which the tip of the side substrate 15A is inserted, as shown in FIG. Since the side surface substrate 15A shown in the drawing has a plurality of connection protrusions 15b at the tip, a plurality of connection holes 15c are provided in the front substrate 15B to insert and connect the connection protrusions 15b. The connecting protrusion 15b provided at the tip of the side substrate 15A is inserted into the connecting hole 15c of the front substrate 15B, and the tips of the side substrates 15A are connected to each other. In this state, the six side-surface substrates 15A constituting the hexagonal cylindrical polygonal body 15 are connected to the substrate holder 20 so that the tips thereof do not spread, that is, do not tilt. The side substrate 15 </ b> A that does not tilt is fixed so that the locking projection 23 a is guided by the locking recess 15 a and does not come out of the substrate holder 20.

さらに、図10ないし図12のLEDランプ1は、側面基板15Aを貫通する止ネジ24を連結壁23にねじ込んで、止ネジ24で側面基板15Aを基板ホルダ20に確実に固定している。止ネジ24が緩まない状態で、側面基板15Aは基板ホルダ20から外れることはない。さらに、以上のLEDランプ1は、仮に止ネジ24が緩んでも、係止凹部15aに係止凸部23aを案内して、抜けないように基板ホルダ20に連結される。したがって、LEDランプは、必ずしも止ネジを介して側面基板を連結壁に固定する必要はなく、止ネジを省略することもできる。さらに、側面基板は、接着して連結壁に固定することもできる。   Further, in the LED lamp 1 of FIGS. 10 to 12, a set screw 24 penetrating the side substrate 15 </ b> A is screwed into the connecting wall 23, and the side substrate 15 </ b> A is securely fixed to the substrate holder 20 with the set screw 24. The side substrate 15A does not come off the substrate holder 20 in the state where the set screw 24 is not loosened. Further, the above LED lamp 1 is connected to the substrate holder 20 so as to guide the locking projection 23a to the locking recess 15a and prevent it from coming off even if the set screw 24 is loosened. Therefore, the LED lamp does not necessarily have to fix the side substrate to the connecting wall via the set screw, and the set screw can be omitted. Furthermore, the side substrate can be bonded and fixed to the connecting wall.

以上の多角筒体15は、鍔部22に対して垂直姿勢に固定されて、その中心軸を連結部11の雄ネジ12と同軸に、すなわち、多角筒体15の中心軸と、連結部11の中心軸とが同一直線状に配置されるように、多角筒体15は基板ホルダ20に固定される。   The above polygonal cylinder 15 is fixed in a vertical posture with respect to the flange part 22, and its central axis is coaxial with the male screw 12 of the connecting part 11, that is, the central axis of the polygonal cylinder 15 and the connecting part 11. The polygonal cylinder 15 is fixed to the substrate holder 20 so as to be arranged in the same straight line as the central axis.

また、図のLEDランプ1は、多角筒体15を六角筒状とするが、この多角筒体は、五角形以上の多角形の筒状とすることもできる。   Moreover, although the LED lamp 1 of a figure makes the polygonal cylinder 15 the hexagonal cylinder shape, this polygonal cylinder can also be made into the polygonal cylinder shape of a pentagon or more.

各々の側面基板15Aは、連結突出部15bを前面基板15Bの連結穴15cに連結して、前面基板15Bに電気接続している。この側面基板15Aは、連結突出部15bに導電部(図示せず)を設け、この導電部を前面基板15Bの連結穴15cに設けている導電部(図示せず)にハンダ付けして電気接続する。図13のLEDランプ1は、複数の連結突出部15bを前面基板15Bに連結するので、側面基板15Aのプラス側とマイナス側とを前面基板15Bに連結することができる。この構造は、側面基板15Aを前面基板15Bに物理的に固定すると共に、前面基板15Bに電気接続できる。ただ、本発明のLEDランプは、側面基板を接着し、あるいはL金具や止ネジ等の固定補助部品を介して互いに固定することもできる。   Each side substrate 15A is electrically connected to the front substrate 15B by connecting the connection protrusion 15b to the connection hole 15c of the front substrate 15B. The side substrate 15A is provided with a conductive portion (not shown) in the connecting protrusion 15b, and this conductive portion is soldered to a conductive portion (not shown) provided in the connecting hole 15c of the front substrate 15B for electrical connection. To do. Since the LED lamp 1 of FIG. 13 connects the plurality of connecting protrusions 15b to the front substrate 15B, the plus side and the minus side of the side substrate 15A can be connected to the front substrate 15B. This structure allows the side substrate 15A to be physically fixed to the front substrate 15B and electrically connected to the front substrate 15B. However, the LED lamps of the present invention can also be fixed to each other by adhering the side substrates or via fixing auxiliary parts such as L metal fittings and set screws.

多角筒体15に配置される側面基板15Aは、互いに隣接する側面基板15Aの間に冷却隙間28を設けている。冷却隙間28のある多角筒体15は、LEDランプ1を水平姿勢に配置する状態で、冷却隙間28に空気を対流させて、側面基板15A、すなわちLED2を効率よく冷却できる。   The side board 15A arranged in the polygonal cylinder 15 has a cooling gap 28 between the side boards 15A adjacent to each other. The polygonal cylinder 15 having the cooling gap 28 can efficiently cool the side substrate 15A, that is, the LED 2 by causing the cooling gap 28 to convect air while the LED lamp 1 is disposed in a horizontal posture.

多角筒体15は、側面基板15Aと前面基板15Bの表面に複数のLED2を固定している。側面基板15Aは、長手方向に離して複数のLED2を固定し、かつ幅方向に配置されるLED2の個数を、後端よりも先端に多くしている。幅方向に配置するLED2の個数を、後端よりも先端で多くするのは、凹面鏡40の反射器4の半径が、先端に向かって大きくなるからである。   The polygonal cylinder 15 has a plurality of LEDs 2 fixed to the surfaces of the side substrate 15A and the front substrate 15B. The side substrate 15A fixes a plurality of LEDs 2 apart in the longitudinal direction, and the number of LEDs 2 arranged in the width direction is larger at the tip than at the rear end. The reason why the number of LEDs 2 arranged in the width direction is made larger at the front end than at the rear end is that the radius of the reflector 4 of the concave mirror 40 becomes larger toward the front end.

図11と図13のLEDランプ1は、側面基板15Aの長手方向に離して3列にLED2を配置して、先端側に位置する第1列には2個のLED2aを横方向に離して配置して、後端側に配置される第3列には1個のLED2cを配置している。さらに、図のLEDランプ1は、第2列にも2個のLED2bを配置している。すなわち、図のLEDランプ1は、第1列と第2列に2個、第3列に1個のLED2を配置している。   In the LED lamp 1 of FIGS. 11 and 13, the LEDs 2 are arranged in three rows apart in the longitudinal direction of the side substrate 15 </ b> A, and the two LEDs 2 a are arranged apart in the lateral direction in the first row located on the tip side. Then, one LED 2c is arranged in the third row arranged on the rear end side. Furthermore, the LED lamp 1 shown in the figure also has two LEDs 2b arranged in the second row. That is, the LED lamp 1 shown in the figure has two LEDs in the first and second rows and one LED 2 in the third row.

図14は、凹面鏡40の反射器4を前面から見て、凹面鏡40に写るLED2の位置を●で示している。この図に示すように、側面基板15Aの長手方向に配置している第1列、第2列、第3列のLED2は、外側から次第に内側に配置される状態で凹面鏡40に写る。反射器4の最も外側に写る第1列のLED2aは、最も大きな円周上に配置され、第2列のLED2bはその内側の円周上に、さらに第3列のLED2cは第2列のLED2bの円周よりも内側にあって最も小さい円周上に配置される。小さい円周と大きい円周に同じ個数のLEDを配置すると、小さい円周上のLEDは間隔が狭くなる。それは、円周の長さが短くなるからである。   FIG. 14 shows the position of the LED 2 reflected on the concave mirror 40 when the reflector 4 of the concave mirror 40 is viewed from the front. As shown in this figure, the LEDs 2 in the first row, the second row, and the third row arranged in the longitudinal direction of the side substrate 15A are reflected on the concave mirror 40 in a state of being gradually arranged from the outside to the inside. The LEDs 2a in the first row appearing on the outermost side of the reflector 4 are arranged on the largest circumference, the LEDs 2b in the second row are on the inner circumference, and the LEDs 2c in the third row are LEDs 2b in the second row. It is located on the smallest circumference inside the circumference. When the same number of LEDs are arranged on the small circumference and the large circumference, the intervals between the LEDs on the small circumference are narrow. This is because the circumference becomes shorter.

図9ないし図13のLEDランプ1は、側面基板15Aの第3列に1個、第2列と第1列に2個のLED2を配置するので、これを前面から見ると図14に示すように、最も小さい円周には6個、中間と最外周には12個のLED2が配置される。したがって、小さい円周の明るさと大きな円周の明るさの差を少なくして、前面を均一な明るさにできる。すなわち、前面ガラス9の前面を均一に明るく照射できる。さらに、図15と図16に示すように、側面基板15Aの第1列に3個、第2列に2個、第3列に1個のLED2を配置することで、前面から見てより均一な明るさとして、前面ガラス9をさらに均一に明るくできる。   In the LED lamp 1 of FIGS. 9 to 13, one LED 2 is arranged in the third row of the side substrate 15A, and two LEDs 2 are arranged in the second row and the first row. In addition, six LEDs 2 are arranged on the smallest circumference, and twelve LEDs 2 are arranged on the middle and outermost circumferences. Therefore, the difference between the brightness of the small circumference and the brightness of the large circumference can be reduced, and the front surface can be made uniform. That is, the front surface of the front glass 9 can be illuminated uniformly and brightly. Furthermore, as shown in FIGS. 15 and 16, by arranging three LEDs 2 in the first row, two rows in the second row, and one LED in the third row of the side substrate 15A, it is more uniform when viewed from the front. The front glass 9 can be evenly brightened with a high brightness.

図13のLEDランプ1は、さらに前面基板15Bには4個のLED2を固定して、全体で34個のLED2を多角筒体15に固定している。本発明のLEDランプは、多角筒体に固定するLEDの個数を特定するものではないが、多角筒体に固定するLEDの個数を変更して、全体の明るさを調整することができる。また、多角筒体に固定するLED自体の消費電力を変更して、全体の明るさを調整することもできる。   In the LED lamp 1 of FIG. 13, four LEDs 2 are fixed to the front substrate 15 </ b> B, and a total of 34 LEDs 2 are fixed to the polygonal cylinder 15. The LED lamp of the present invention does not specify the number of LEDs to be fixed to the polygonal cylinder, but the overall brightness can be adjusted by changing the number of LEDs to be fixed to the polygonal cylinder. In addition, the overall brightness can be adjusted by changing the power consumption of the LED itself fixed to the polygonal cylinder.

側面基板15A及び前面基板15Bに固定されるLED2は、好ましくは、基板実装型であるチップタイプのLED2を使用する。チップタイプのLED2は、基板の正確な位置に、簡単に実装できる特徴がある。さらに、チップタイプのLED2は、広い指向特性を有しており、照射される光が広く拡散される特性があるので、砲弾型の集光部を有するLEDに比較して、斑なく均一に前面ガラスを照射できる特徴がある。すなわち、LEDランプは、広い指向性を有するタイプのLEDを配置することで、LEDから照射される光を広く拡散して、前面ガラスを斑なく均一に明るく照射できる。ただ、本発明のLEDランプは、使用するLEDを、必ずしもチップタイプのLEDとする必要はなく、集光部を有するLED(例えば、砲弾型のLED)を使用することもできる。   The LED 2 fixed to the side substrate 15A and the front substrate 15B is preferably a chip type LED 2 which is a substrate mounting type. The chip-type LED 2 has a feature that it can be easily mounted at an accurate position on the substrate. Furthermore, the chip-type LED 2 has a wide directivity characteristic, and the irradiated light is widely diffused. Therefore, the front surface of the chip-type LED 2 can be evenly and uniformly compared to an LED having a shell-type condensing part. There is a feature that can irradiate glass. That is, the LED lamp can disperse the light emitted from the LED widely and uniformly and brightly illuminate the front glass without any spots by disposing a type of LED having a wide directivity. However, the LED lamp of the present invention does not necessarily need to be a chip-type LED, and an LED having a condensing part (for example, a bullet-type LED) can also be used.

図17はLEDランプ1の概略回路図を、図18は複数のLED2を前面基板15Bと側面基板15Aに配置する配置図を示している。これらの図に示すようにLEDランプ1は、連結部11の外周面と先端とに設けた電極13、14を整流回路18に接続し、整流回路18の出力側に、複数のLED2と定電流素子19を直列に接続している。このLEDランプ1は、商用電源を整流回路18で脈流に変換して複数のLED2を点灯する。定電流素子19は、LED2の電流が一定の電流値以上にならないように安定化する。   FIG. 17 is a schematic circuit diagram of the LED lamp 1, and FIG. 18 is a layout diagram in which a plurality of LEDs 2 are arranged on the front substrate 15B and the side substrate 15A. As shown in these drawings, the LED lamp 1 has electrodes 13 and 14 provided on the outer peripheral surface and the tip of the connecting portion 11 connected to a rectifier circuit 18. Elements 19 are connected in series. The LED lamp 1 turns on a plurality of LEDs 2 by converting a commercial power source into a pulsating flow by a rectifier circuit 18. The constant current element 19 is stabilized so that the current of the LED 2 does not exceed a certain current value.

整流回路18は、ダイオードブリッジ18Aである。ダイオードブリッジ18Aは、入力される交流電源を直流に変換して、複数のLED2を直列接続してなる直列回路のプラス側とマイナス側に整流された直流を出力する。直列に接続するLED2の個数は、供給される電源電圧とLED2の定格電圧で特定される。たとえば、商用電源としてAC100Vの交流電源を供給するLEDランプは、定格電圧を3VとするLEDを、30個〜40個直列に接続して点灯できる。図のLEDランプ1は34個のLED2を備えているので、全てのLED2を直列に接続している。ただ、複数のLEDは、直列と並列とに接続することもできる。   The rectifier circuit 18 is a diode bridge 18A. The diode bridge 18A converts the input AC power source to DC and outputs DC rectified to the plus side and the minus side of a series circuit formed by connecting a plurality of LEDs 2 in series. The number of LEDs 2 connected in series is specified by the supplied power supply voltage and the rated voltage of the LEDs 2. For example, an LED lamp that supplies AC 100V AC power as a commercial power source can be lit by connecting 30 to 40 LEDs in series with a rated voltage of 3V. Since the LED lamp 1 shown in the figure includes 34 LEDs 2, all the LEDs 2 are connected in series. However, a plurality of LEDs can be connected in series and in parallel.

多数のLED2を直列に接続しているLED2の直列回路は、ひとつのLEDが切れると全体のLEDが点灯しなくなる。いずれかのLEDが切れる確率は、直列に接続しているLEDの個数が多くなると高くなる。歩行者用信号機は、LEDランプ1が切れて点灯できない状態では、交通事故の原因となる。したがって、いかなる状態においても、LEDランプ1を確実に点灯することが大切である。この弊害は複数のLEDを並列に接続することで解消できる。並列接続しているLEDは、いずれかのLEDが切れても並列に接続しているLEDが消灯することがない。ただ、LEDを並列に接続する回路構成は、LEDに供給する電圧を商用電源を整流した電圧よりも低くする必要があるので、商用電源の電圧を降下してLEDに供給する電源回路を必要とする。この電源回路には、主としてスイッチング電源が使用される。スイッチング電源は整流回路に比較して回路構成が複雑で高価になる。また、整流回路に比較すると寿命が短くなる欠点もある。内蔵している電解コンデンサが経時的に劣化するからである。   In a series circuit of LEDs 2 in which a large number of LEDs 2 are connected in series, when one LED is cut off, the entire LED does not light up. The probability that any of the LEDs will be cut increases as the number of LEDs connected in series increases. The pedestrian traffic light causes a traffic accident when the LED lamp 1 is turned off and cannot be lit. Therefore, it is important to reliably turn on the LED lamp 1 in any state. This problem can be solved by connecting a plurality of LEDs in parallel. The LEDs connected in parallel do not turn off the LEDs connected in parallel even if one of the LEDs is cut off. However, the circuit configuration for connecting the LEDs in parallel requires that the voltage supplied to the LED be lower than the voltage obtained by rectifying the commercial power supply, and therefore requires a power supply circuit that drops the commercial power supply voltage and supplies it to the LED. To do. A switching power supply is mainly used for this power supply circuit. A switching power supply is more complicated and expensive than a rectifier circuit. In addition, there is a drawback that the life is shortened as compared with the rectifier circuit. This is because the built-in electrolytic capacitor deteriorates with time.

商用電源をダイオードの整流回路で整流してLEDに直接に供給する回路構成は極めて簡単で、安価に製造できる特徴がある。とくに、ダイオードで整流した脈流を電解コンデンサで平滑化しない整流回路は、経時的に劣化する部品がなく、長時間にわたって故障することなく安定に動作する。ただ、この回路構成は、商用電源を整流するので出力電圧がLEDの点灯電圧に比較して相当に高くなる。たとえば、100Vの商用電源が整流された脈流はピーク電圧が約140Vと相当に高くなる。この電圧でLEDを点灯するには、多数のLEDを直列に接続して、各々のLEDに印加される電圧を低くする必要がある。ただ、前述したように多数のLEDを直列に接続する回路構成は、いずれかひとつのLEDが切れると、直列に接続している他の全てのLEDが点灯されなくなる。   A circuit configuration in which commercial power is rectified by a diode rectifier circuit and directly supplied to the LED is very simple and can be manufactured at low cost. In particular, a rectifier circuit that does not smooth a pulsating current rectified by a diode with an electrolytic capacitor has no components that deteriorate with time, and operates stably without failing for a long time. However, since this circuit configuration rectifies the commercial power supply, the output voltage is considerably higher than the lighting voltage of the LED. For example, the pulsating flow obtained by rectifying a 100V commercial power supply has a peak voltage of about 140V, which is considerably high. In order to light an LED with this voltage, it is necessary to connect a large number of LEDs in series and reduce the voltage applied to each LED. However, as described above, in the circuit configuration in which a large number of LEDs are connected in series, when any one LED is cut off, all other LEDs connected in series are not turned on.

LED2に並列に接続しているバイパス回路6は、図19に示すように、切れたLED2’をバイパスさせて、他のLED2が消えるのを防止する。バイパス回路6は、図19の(a)で示すように、並列に接続しているLED2が切れない状態ではOFF、また、図19の(b)で示すように、LED2が切れた状態でONに切り換えられる。バイパス回路6は、並列に接続しているLED2の両端の電圧を検出する電圧検出部61と、この電圧検出部61でオンオフに制御させるスイッチング素子62とを備えている。電圧検出部61は、LED2が切れて入力電圧が正常電圧を超えると、スイッチング素子62をONに切り換えて、切れたLED2’に電流をバイパスさせる。LED両端の電圧は、LED2が切れない状態ではLED2の点灯電圧の1.5〜4Vとなる。しかしながら、LED2が切れると、切れたLED2’の両端がオープン状態となって、点灯電圧よりも高くなる。電圧検出部61は、LED両端の電圧が点灯電圧よりも高くなると、スイッチング素子62をONに切り換えて、切れたLED2’にバイパスして電流を流す回路を設ける。スイッチング素子62がONに切り換えられると、切れたLED2’の両端の電圧は低下する。この状態においても、スイッチング素子62はON状態に保持されて、切れたLED2’にバイパスさせるように電流を流す状態が保持される。   As shown in FIG. 19, the bypass circuit 6 connected in parallel to the LED 2 bypasses the broken LED 2 'and prevents the other LEDs 2 from disappearing. The bypass circuit 6 is turned off when the LEDs 2 connected in parallel are not cut off as shown in FIG. 19A, and is turned on when the LEDs 2 are cut off as shown in FIG. 19B. Can be switched to. The bypass circuit 6 includes a voltage detection unit 61 that detects a voltage at both ends of the LEDs 2 connected in parallel, and a switching element 62 that is controlled to be turned on and off by the voltage detection unit 61. When the LED 2 is turned off and the input voltage exceeds the normal voltage, the voltage detection unit 61 switches the switching element 62 to ON so that the broken LED 2 'bypasses the current. The voltage across the LED is 1.5 to 4 V, which is the lighting voltage of the LED 2 when the LED 2 is not turned off. However, when the LED 2 is turned off, both ends of the cut LED 2 ′ are in an open state and become higher than the lighting voltage. When the voltage across the LED becomes higher than the lighting voltage, the voltage detector 61 is provided with a circuit that switches the switching element 62 to ON and bypasses the disconnected LED 2 ′ to flow current. When the switching element 62 is switched on, the voltage across the broken LED 2 'decreases. Even in this state, the switching element 62 is maintained in the ON state, and a state in which a current is supplied so as to bypass the disconnected LED 2 ′ is maintained.

バイパス回路6は、図13と図10に示すように、側面基板15Aと前面基板15Bの裏面に実装されて、切れたLEDにバイパスするように通電する。   As shown in FIGS. 13 and 10, the bypass circuit 6 is mounted on the back surface of the side substrate 15A and the front substrate 15B and energizes the bypassed LED to bypass it.

バイパス回路6は、全てのLEDと並列に接続するのを理想とする。ただ、全てのLEDと並列にバイパス回路を制御すると、LEDと同じ数のバイパス回路を必要として、部品コストが高くなる。   The bypass circuit 6 is ideally connected in parallel with all LEDs. However, if the bypass circuit is controlled in parallel with all the LEDs, the same number of bypass circuits as the LEDs are required, resulting in a high component cost.

図18と図19のLEDランプ1は、バイパス回路6を複数LED2の直列回路と並列に接続して、バイパス回路6の数をLEDよりも少なくしている。図18と図19のLEDランプ1は、少ないLED2と並列に接続する少数LEDバイパス回路6Aと、この少数LEDバイパス回路6Aよりも多数のLED2の直列回路と並列に接続している多数LEDバイパス回路6Bとしている。図のLEDランプ1は、少数LEDバイパス回路6Aを1個のLED2と並列に接続して、多数LEDバイパス回路6Bは2個のLED2の直列回路と並列に接続している。図示しないが、少数LEDバイパス回は2個以上のLEDの直列回路と並列に接続し、多数LEDバイパス回路を少数LEDバイパス回路よりも多数のLEDの直列回路と並列に接続することもできる。   In the LED lamp 1 shown in FIGS. 18 and 19, the bypass circuit 6 is connected in parallel with the series circuit of the plurality of LEDs 2 so that the number of bypass circuits 6 is smaller than that of the LEDs. The LED lamp 1 of FIGS. 18 and 19 includes a small number LED bypass circuit 6A connected in parallel with a small number of LEDs 2, and a large number LED bypass circuit connected in parallel with a series circuit of a larger number of LEDs 2 than the small number LED bypass circuit 6A. 6B. In the illustrated LED lamp 1, a minority LED bypass circuit 6A is connected in parallel with one LED 2, and a majority LED bypass circuit 6B is connected in parallel with a series circuit of two LEDs 2. Although not shown, the minority LED bypass circuit may be connected in parallel with a series circuit of two or more LEDs, and the multiple LED bypass circuit may be connected in parallel with the series circuit of more LEDs than the minority LED bypass circuit.

図19のLEDランプは、バイパス回路6を並列に接続しているLED2の個数を、側面基板15Aの先端部で後端部よりも多くしている。すなわち、多数LEDバイパス回路6Bは側面基板15Aの先端部のLED2の直列回路に接続され、少数LEDバイパス回路6Aは、側面基板15Aの後端部のLED2と並列に接続している。図19のLEDランプは、側面基板15Aの両側に長手方向に並ぶ第1列のLED2aと第2列のLED2bを直列に接続して、これらのLED2a、2bの直列回路に多数LEDバイパス回路6Bを並列に接続して、第3列に配置する1個のLED2cと並列に少数LEDバイパス回路6Aを接続している。したがって、1枚の側面基板15Aには、2組の多数LEDバイパス回路6Bと1組の少数LEDバイパス回路6Aを実装している。   In the LED lamp of FIG. 19, the number of LEDs 2 connecting the bypass circuit 6 in parallel is greater at the front end portion of the side substrate 15A than at the rear end portion. That is, the majority LED bypass circuit 6B is connected to the series circuit of the LEDs 2 at the tip of the side board 15A, and the minority LED bypass circuit 6A is connected in parallel to the LEDs 2 at the rear end of the side board 15A. In the LED lamp of FIG. 19, a first row of LEDs 2a and a second row of LEDs 2b arranged in the longitudinal direction on both sides of a side substrate 15A are connected in series, and a plurality of LED bypass circuits 6B are added to the series circuit of these LEDs 2a and 2b. A small number of LED bypass circuits 6A are connected in parallel with one LED 2c arranged in the third row in parallel. Therefore, two sets of many LED bypass circuits 6B and one set of minority LED bypass circuits 6A are mounted on one side substrate 15A.

また、前面基板15Bに設けているLED2は、2個のLED2dを直列に接続して、これらのLED2dの直列回路に多数LEDバイパス回路6Bを並列に接続している。ただ、前面基板に設けているLEDは、各々のLEDに少数LEDバイパス回路を並列に接続、すなわち、1個のLEDと並列に少数LEDバイパス回路を接続することもできる。   The LED 2 provided on the front substrate 15B has two LEDs 2d connected in series, and a large number of LED bypass circuits 6B are connected in parallel to the series circuit of these LEDs 2d. However, the LEDs provided on the front substrate can be connected to each LED in parallel with a minority LED bypass circuit, that is, a minority LED bypass circuit can be connected in parallel with one LED.

以上のLEDランプ1は、第3列のLED2cが切れて点灯しなくなると、切れたLED2’のみ消灯されて他の全てのLED2を点灯できる。また、第1列と第2列に配置するいずれかのLED2が切れて点灯しなくなると、切れたLED2’に対して、側面基板15Aの長手方向に並ぶひとつのLED2のみが消灯され、すなわち、2個のLED2が消灯して他の全てのLED2が点灯される。2個のLED2は、側面基板15Aの長手方向に並ぶので、ひとつのLED2が切れて消灯しても、前面ガラス9の明るさの不均一を最小にできる。それは、前面ガラス9を前から見る状態で、第1列と2列のLED2の間隔は、第1列目や第2列目に円周上に並ぶLED2の間隔よりも狭くなるからである。   In the above LED lamp 1, when the LED 2c in the third row is cut off and does not light up, only the cut off LED 2 'is turned off and all other LEDs 2 can be turned on. Further, when any of the LEDs 2 arranged in the first row and the second row are cut off and no longer lit, only one LED 2 arranged in the longitudinal direction of the side substrate 15A is turned off with respect to the cut LED 2 ′. The two LEDs 2 are turned off and all other LEDs 2 are turned on. Since the two LEDs 2 are arranged in the longitudinal direction of the side substrate 15A, even if one LED 2 is cut off and turned off, the uneven brightness of the front glass 9 can be minimized. This is because the distance between the LEDs 2 in the first row and the second row is narrower than the interval between the LEDs 2 arranged on the circumference in the first row and the second row in a state where the front glass 9 is viewed from the front.

ただし、多数LEDバイパス回路は、必ずしも側面基板の長手方向に並ぶ2個のLEDの直列回路と並列に接続することなく、側面基板の横方向に隣接するLEDの直列回路と並列に接続することができ、また、2個のLEDの直列回路と並列に接続することなく、3個以上のLEDの直列回路と並列に接続することができる。また、少数LEDバイパス回路も、必ずしも1個のLEDと並列に接続することなく、多数LEDバイパス回路が並列に接続しているLEDの直列回路よりも少数のLEDの直列回路と並列に接続することもできる。   However, the multiple LED bypass circuit is not necessarily connected in parallel to the series circuit of two LEDs arranged in the longitudinal direction of the side substrate, but can be connected in parallel to the series circuit of LEDs adjacent in the lateral direction of the side substrate. In addition, it can be connected in parallel with a series circuit of three or more LEDs without being connected in parallel with a series circuit of two LEDs. In addition, the minority LED bypass circuit is not necessarily connected in parallel with one LED, but is connected in parallel with a series circuit of a smaller number of LEDs than a series circuit of LEDs in which the majority LED bypass circuit is connected in parallel. You can also.

透明カバー16は、基板ホルダ20に配置された複数のLED2の発光を外部に透過できる透光性を有する。透明カバー16は、基板ホルダ20の前方に固定している複数の基板からなる多角筒体15を内部に収納できる形状にプラスチックやガラスで成形している。図9と図10の透明カバー16は、円筒部16Aの先端に球面部16Bを設けた形状に成形しており、円筒部16Aの内部に、基板ホルダ20に固定される多角筒体15を収納している。透明カバー16の先端部の球面部16Bの表面は、光を乱反射する無数の凹凸面として、先端部を除く部分となる円筒部16Aは、表面を平滑面としている。平滑面は、LED2の光を効率よく透過して、前面ガラス9を明るく照射し、乱反射する凹凸面は、前面基板15Bに固定しているLED2の光を散乱させて、前面ガラス9の表面を均等な明るさに照射する。   The transparent cover 16 has translucency that can transmit the light emitted from the plurality of LEDs 2 arranged on the substrate holder 20 to the outside. The transparent cover 16 is formed of plastic or glass into a shape that can accommodate the polygonal cylindrical body 15 composed of a plurality of substrates fixed in front of the substrate holder 20. The transparent cover 16 shown in FIGS. 9 and 10 is formed in a shape in which a spherical portion 16B is provided at the tip of the cylindrical portion 16A, and the polygonal cylinder 15 fixed to the substrate holder 20 is accommodated inside the cylindrical portion 16A. doing. The surface of the spherical portion 16B at the tip of the transparent cover 16 is an infinite number of irregular surfaces that diffusely reflect light, and the cylindrical portion 16A that is a portion excluding the tip has a smooth surface. The smooth surface efficiently transmits the light of the LED 2 and irradiates the front glass 9 brightly, and the uneven surface that irregularly reflects the light of the LED 2 fixed to the front substrate 15B scatters the surface of the front glass 9. Irradiate evenly.

この透明カバー16は、基板ホルダ20の前方に固定されて、内部に収納される光源であるLED2の発光を外部に透過させる。透明カバー16は、接着して、あるいは、ねじ込んで、あるいはまた係止構造で、基板ホルダ20の鍔部22の外周縁部に固定される。   The transparent cover 16 is fixed to the front of the substrate holder 20 and transmits light emitted from the LED 2 that is a light source housed inside to the outside. The transparent cover 16 is fixed to the outer peripheral edge portion of the flange portion 22 of the substrate holder 20 by bonding, screwing, or also with a locking structure.

さらに、図の透明カバー16は、内部の空気を換気する換気口17を開口している。図12に示す透明カバー16は、多角筒体15を構成する側面基板15Aの間に設けた冷却隙間28と対向する位置にスリット状の換気口17を設けている。このように、多角筒体15の冷却隙間28と対向する位置に換気口17を設けている透明カバー16は、側面基板15Aの間の冷却隙間28に流れる空気流を透明カバー16の外部にスムーズに換気して、側面基板15AやLED2の発熱を効率よく冷却する。さらに、図12に示す透明カバー16は、多角筒体15の冷却隙間28と対向する位置に設けた換気口17同士の間にも換気口17を設けている。このように、多数の換気口17を設けた透明カバー16は、どの位置で停止されても、内部の空気を確実に換気できる。さらに、図に示す換気口17は、透明カバー16の円筒部16Aから球面部16Bに向かってスリットの幅が広くなるように開口している。このように、換気口17の開口面積を球面部16Bに向かって大きくする透明カバー16は、電子部品が多く配置される前面基板15Bを効率よく放熱できる。   Further, the transparent cover 16 shown in the figure opens a ventilation port 17 for ventilating the air inside. The transparent cover 16 shown in FIG. 12 is provided with a slit-like ventilation port 17 at a position facing the cooling gap 28 provided between the side substrates 15A constituting the polygonal cylinder 15. As described above, the transparent cover 16 provided with the ventilation port 17 at a position facing the cooling gap 28 of the polygonal cylinder 15 allows the air flow flowing through the cooling gap 28 between the side substrates 15 </ b> A to flow smoothly to the outside of the transparent cover 16. To efficiently cool the heat generated by the side substrate 15A and the LED 2. Further, the transparent cover 16 shown in FIG. 12 is provided with a ventilation port 17 between the ventilation ports 17 provided at positions facing the cooling gap 28 of the polygonal cylinder 15. Thus, the transparent cover 16 provided with a large number of ventilation ports 17 can reliably ventilate the internal air regardless of the position at which the transparent cover 16 is stopped. Further, the ventilation port 17 shown in the drawing is opened so that the width of the slit becomes wider from the cylindrical portion 16A of the transparent cover 16 toward the spherical portion 16B. Thus, the transparent cover 16 that increases the opening area of the ventilation port 17 toward the spherical surface portion 16B can efficiently dissipate the front substrate 15B on which many electronic components are arranged.

1…LEDランプ
2…LED 2’…切れたLED
2a…LED
2b…LED
2c…LED
2d…LED
3…ランプホルダ
4…反射器
5…ソケット
6…バイパス回路 6A…少数LEDバイパス回路
6B…多数LEDバイパス回路
8…連結具
9…前面ガラス 9A…透明ガラス
9B…フィルター
10…ランプ本体
11…連結部
12…雄ネジ
13…電極
14…電極
15…多角筒体 15A…側面基板
15a…係止凹部
15b…連結突出部
15B…前面基板
15c…連結穴
16…透明カバー 16A…円筒部
16B…球面部
17…換気口
18…整流回路 18A…ダイオードブリッジ
19…定電流素子
20…基板ホルダ
21…挿入部
22…鍔部
23…連結壁 23a…係止凸部
24…止ネジ
26…嵌着凸部
27…嵌入部
28…冷却隙間
31…リングプレート
32…連結筒部
33…内側筒体
34…中心孔
40…凹面鏡
41…脱着穴
42…筒状突出部
43…開口部
44…垂直面
45…段差部
48…パッキン
49…パッキン
52…雌ネジ
61…電圧検出部
62…スイッチング素子
82…LED
84…反射鏡
91…LEDランプ
92…LED
94…反射鏡
95…筒体 95A…側面
95B…先端面
99…前面ガラス
1 ... LED lamp 2 ... LED 2 '... LED out
2a ... LED
2b ... LED
2c ... LED
2d ... LED
3 ... Lamp holder 4 ... Reflector 5 ... Socket 6 ... Bypass circuit 6A ... Minority LED bypass circuit
6B ... Many LED bypass circuits 8 ... Connector 9 ... Front glass 9A ... Transparent glass
9B ... Filter 10 ... Lamp body 11 ... Connecting part 12 ... Male screw 13 ... Electrode 14 ... Electrode 15 ... Polygonal cylinder 15A ... Side substrate
15a ... Locking recess
15b ... Connection protrusion part
15B ... Front substrate
15c ... Connecting hole 16 ... Transparent cover 16A ... Cylindrical part
16B ... Spherical surface 17 ... Ventilation port 18 ... Rectifier circuit 18A ... Diode bridge 19 ... Constant current element 20 ... Substrate holder 21 ... Insertion part 22 ... Hang 23 Attachment convex part 27 ... Insertion part 28 ... Cooling gap 31 ... Ring plate 32 ... Connection cylinder part 33 ... Inner cylinder 34 ... Center hole 40 ... Concave mirror 41 ... Desorption hole 42 ... Cylindrical protrusion 43 ... Opening part 44 ... Vertical surface 45 ... Stepped portion 48 ... Packing 49 ... Packing 52 ... Female screw 61 ... Voltage detection unit 62 ... Switching element 82 ... LED
84 ... Reflecting mirror 91 ... LED lamp 92 ... LED
94 ... Reflector 95 ... Cylinder 95A ... Side
95B ... tip side 99 ... front glass

Claims (10)

表面で光を反射する凹面鏡(40)であって開口部を四角形としてなる反射器(4)の中心部に設けてなるソケット(5)にねじ込んで交換自在に連結される、光源をLED(2)とする歩行者用信号機の電球に代わって使用されるLEDランプであって、
前記ソケット(5)にねじ込んで連結される外周に雄ネジ(12)を設けてなる連結部(11)と、この連結部(11)に固定してなる複数のLED(2)を備えるランプ本体(10)とからなり、
前記ランプ本体(10)は、長方形である複数枚の側面基板(15A)が多角形の筒状に配置され、かつ先端面が前面基板(15B)で閉塞されてなる多角筒体(15)を備え、
この多角筒体(15)は、その中心軸を前記連結部(11)の雄ネジ(12)と同軸に配置して、側面基板(15A)と前面基板(15B)の表面に複数のLED(2)を固定しており、
さらに、前記側面基板(15A)は、長手方向に離して複数のLED(2)が固定されると共に、幅方向に配置されるLED(2)の個数を、後端よりも先端に多くしてなる歩行者用信号機の電球に代わって使用されるLEDランプ。
A concave mirror (40) that reflects light on the surface, and is connected to the socket (5) provided at the center of the reflector (4) having a rectangular opening by screwing the LED (2 LED lamps used in place of the light bulbs for pedestrian traffic lights,
A lamp body comprising a connecting portion (11) having a male screw (12) provided on the outer periphery to be screwed and connected to the socket (5), and a plurality of LEDs (2) fixed to the connecting portion (11) (10)
The lamp body (10) includes a polygonal cylindrical body (15) in which a plurality of rectangular side substrates (15A) are arranged in a polygonal cylindrical shape, and a front end surface is closed by a front substrate (15B). Prepared,
The polygonal cylinder (15) has a central axis arranged coaxially with the male screw (12) of the connecting portion (11), and a plurality of LEDs (on the surfaces of the side substrate (15A) and the front substrate (15B)). 2) is fixed,
Further, the side substrate (15A) is fixed with a plurality of LEDs (2) spaced apart in the longitudinal direction, and the number of LEDs (2) arranged in the width direction is increased at the front end than at the rear end. LED lamps used in place of pedestrian traffic light bulbs.
前記側面基板(15A)に、長手方向に離して3列にLED(2)が配置され、先端側に位置する第1列には2個又は3個のLED(2)が横方向に離して配置され、後端側に配置される第3列には1個のLED(2)を配置してなる請求項1に記載される歩行者用信号機の電球に代わって使用されるLEDランプ。   On the side substrate (15A), LEDs (2) are arranged in three rows apart in the longitudinal direction, and two or three LEDs (2) are separated in the lateral direction in the first row located on the tip side. The LED lamp used instead of the light bulb of the traffic light for pedestrians according to claim 1, wherein one LED (2) is arranged in the third row arranged on the rear end side. 前記側面基板(15A)に、第1列と第2列に2個、第3列には1個のLED(2)を配置してなる請求項2に記載される歩行者用信号機の電球に代わって使用されるLEDランプ。   3. The pedestrian traffic light bulb according to claim 2, wherein two LEDs in the first row and the second row and one LED (2) in the third row are arranged on the side board (15 </ b> A). LED lamp used instead. 前記多角筒体(15)が五角形以上の多角形である請求項1ないし3のいずれかに記載される歩行者用信号機の電球に代わって使用されるLEDランプ。   4. The LED lamp used in place of a light bulb for a pedestrian traffic light according to any one of claims 1 to 3, wherein the polygonal cylinder (15) is a pentagon or more polygon. 前記ランプ本体(10)が、前記連結部(11)に一体構造の基板ホルダ(20)を備えており、この基板ホルダ(20)に前記側面基板(15A)の後端部を連結しており、
前記側面基板(15A)は基板ホルダ(20)に係止される係止凹部(15a)を後端から前方に離れた位置に有し、
前記基板ホルダ(20)は、側面基板(15A)の背面に位置する連結壁(23)を有すると共に、側面基板(15A)の後端を挿入して連結する嵌入部(27)を有し、さらに連結壁(23)には、前記側面基板(15A)に設けている係止凹部(15a)に案内される係止凸部(23a)を有し、
後端が嵌入部(27)に案内された前記側面基板(15A)の係止凹部(15a)に、基板ホルダ(20)の係止凸部(23a)が案内されて側面基板(15A)が抜けない状態で基板ホルダ(20)に連結され、
さらに、前記前面基板(15B)には側面基板(15A)の先端を挿入する連結穴(15c)が設けられ、側面基板(15A)の先端が前面基板(15B)の連結穴(15c)に挿入されて、側面基板(15A)が基板ホルダ(20)に連結されてなる請求項1ないし4のいずれかに記載される歩行者用信号機の電球に代わって使用されるLEDランプ。
The lamp body (10) is provided with a substrate holder (20) having an integral structure at the connecting portion (11), and the rear end portion of the side substrate (15A) is connected to the substrate holder (20). ,
The side substrate (15A) has a locking recess (15a) locked to the substrate holder (20) at a position away from the rear end in the forward direction.
The substrate holder (20) has a connecting wall (23) located on the back surface of the side substrate (15A) and a fitting portion (27) for inserting and connecting the rear end of the side substrate (15A), Furthermore, the connecting wall (23) has a locking projection (23a) guided by a locking recess (15a) provided in the side substrate (15A),
The locking projection (23a) of the substrate holder (20) is guided to the locking recess (15a) of the side substrate (15A) whose rear end is guided by the fitting portion (27), and the side substrate (15A) is Connected to the substrate holder (20) in a state where it does not come off,
Further, the front substrate (15B) is provided with a connecting hole (15c) for inserting the tip of the side substrate (15A), and the tip of the side substrate (15A) is inserted into the connecting hole (15c) of the front substrate (15B). The LED lamp used instead of the light bulb of the pedestrian traffic light according to any one of claims 1 to 4, wherein the side board (15A) is connected to the board holder (20).
前記多角筒体(15)に連結してなる複数のLED(2)が直列に接続されると共に、直列接続しているLED(2)と並列に接続してなる、LED(2)の異常時にON状態となるバイパス回路(6)を備えており、LED(2)の異常時にバイパス回路(6)がオン状態となって、直列接続してなる他のLED(2)を点灯するようにしてなる請求項1ないし5のいずれかに記載される歩行者用信号機の電球に代わって使用されるLEDランプ。   A plurality of LEDs (2) connected to the polygonal cylinder (15) are connected in series, and connected in parallel with the LEDs (2) connected in series. It has a bypass circuit (6) that is turned on, and when the LED (2) is abnormal, the bypass circuit (6) is turned on so that the other LEDs (2) connected in series are lit. An LED lamp used in place of a light bulb for a pedestrian traffic light according to any one of claims 1 to 5. 前記バイパス回路(6)が複数LED(2)の直列回路と並列に、又はひとつのLED(2)と並列に接続され、
かつ、バイパス回路(6)が並列に接続してなるLED(2)の個数が、側面基板(15A)の先端部で後端部よりも多くしてなる請求項1ないし6のいずれかに記載される歩行者用信号機の電球に代わって使用されるLEDランプ。
The bypass circuit (6) is connected in parallel with a series circuit of a plurality of LEDs (2) or in parallel with one LED (2),
The number of LEDs (2) formed by connecting bypass circuits (6) in parallel is greater at the front end portion of the side substrate (15A) than at the rear end portion. LED lamp used in place of the pedestrian traffic light bulb.
前記多角筒体(15)が、互いに隣接する側面基板(15A)の間に冷却隙間(28)を設けてなる請求項1ないし7のいずれかに記載される歩行者用信号機の電球に代わって使用されるLEDランプ。   8. Instead of a light bulb for a pedestrian traffic light according to claim 1, wherein the polygonal cylinder (15) is provided with a cooling gap (28) between the side substrates (15A) adjacent to each other. LED lamp used. 前記基板ホルダ(20)に多角筒体(15)をカバーする透明カバー(16)を連結しており、この透明カバー(16)が、前記多角筒体(15)を構成する側面基板(15A)の間に設けた冷却隙間(28)と対向する位置に換気口(17)を設けてなる請求項8に記載される歩行者用信号機の電球に代わって使用されるLEDランプ。   A transparent cover (16) covering the polygonal cylinder (15) is connected to the substrate holder (20), and the transparent cover (16) is a side substrate (15A) constituting the polygonal cylinder (15). The LED lamp used instead of the light bulb of the traffic light for pedestrians described in Claim 8 which provides the ventilation opening (17) in the position facing the cooling gap (28) provided between. 前記基板ホルダ(20)に多角筒体(15)をカバーする透明カバー(16)を連結しており、透明カバー(16)の先端部の表面が光を乱反射する無数の凹凸面で、先端部を除く部分が表面を平滑面としてなる請求項1ないし9のいずれかに記載される歩行者用信号機の電球に代わって使用されるLEDランプ。   A transparent cover (16) that covers the polygonal cylinder (15) is connected to the substrate holder (20), and the surface of the tip of the transparent cover (16) is an infinite number of uneven surfaces that diffusely reflect light, and the tip The LED lamp used instead of the light bulb of the traffic light for pedestrians according to any one of claims 1 to 9, wherein a portion excluding the surface has a smooth surface.
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JP3574614B2 (en) * 2000-09-14 2004-10-06 常盤電業株式会社 Light emitters and lamps
JP4335621B2 (en) * 2003-04-25 2009-09-30 スタンレー電気株式会社 Vehicle lighting

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