JP2005128665A - Traffic light - Google Patents

Traffic light Download PDF

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JP2005128665A
JP2005128665A JP2003361455A JP2003361455A JP2005128665A JP 2005128665 A JP2005128665 A JP 2005128665A JP 2003361455 A JP2003361455 A JP 2003361455A JP 2003361455 A JP2003361455 A JP 2003361455A JP 2005128665 A JP2005128665 A JP 2005128665A
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light
display
light source
color
display unit
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JP4238696B2 (en
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Takashi Saito
孝 斎藤
Wataru Iwai
彌 岩井
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Panasonic Electric Works Co Ltd
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Matsushita Electric Works Ltd
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Abstract

<P>PROBLEM TO BE SOLVED: To provide a traffic light for enabling a color vision handicapped person to easily recognize a lighted display part without changing energy or the number of LEDs in the traffic light in comparison with those of an existing LED type one. <P>SOLUTION: This traffic light is provided with a plurality of display parts 2-4, which are displayed by arranging a plurality of small area light emission light sources 1, and a control part 7 for controlling turning on/off of a plurality of display parts 2-4, and the respective display parts 2-4 are lighted in different colors. When the predetermined display part 2 is turned on, at least one light source 1a is lighted in other display parts 3 and 4 differently from the predetermined display part 2 for showing that the display parts 3 and 4 are turned off. The intensity of the light source 1a showing the turning-off condition is lower than that of the light source 1 for display in the display part. A light color of the light source 1a is different from that of the light source 1. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

本発明は、光源にLEDなどの小面積発光の光源を複数用いた複数の表示部を有する交通信号灯に関するものである。   The present invention relates to a traffic signal lamp having a plurality of display units using a plurality of light sources of small area emission such as LEDs as light sources.

電球式交通信号灯（以下、電球式と記述する）は、道路の交差点などに設置されており、『赤』、『黄』、『緑』の表示部を有する（歩行者用の場合は『赤』、『緑』の2色のタイプも存在する）。いずれか一箇所の表示部を点灯することで自動車や歩行者の進行の可否を制御し、交通事故を低減している。   A light bulb type traffic signal light (hereinafter referred to as “bulb type”) is installed at intersections of roads, etc., and has display parts of “red”, “yellow”, and “green” (for pedestrians, “red” ”And“ Green ”are also available.) By illuminating any one of the display sections, it is possible to control the progress of automobiles and pedestrians and reduce traffic accidents.

しかし、電球式交通信号灯の場合、西日が交通信号灯に差し込むと灯体の反射板や前面にある色レンズによって運転者側に反射し、全ての表示部が点灯しているように見えてしまい、どの色に点灯しているか視認しにくくなる（ファントム現象）。また光源に白熱電球を使用しているため、フィラメントが切れると点灯しなくなる。そのため、1年に数回交換する必要があり、メンテナンスコストが大きい。   However, in the case of a light bulb-type traffic signal light, when the west sun is inserted into the traffic signal light, it is reflected to the driver side by the reflector of the lamp body and the color lens on the front, and all the display parts appear to be lit. It becomes difficult to see which color is lit (phantom phenomenon). Also, since an incandescent bulb is used as the light source, it will not light up if the filament breaks. Therefore, it needs to be replaced several times a year, and the maintenance cost is high.

LED式交通信号灯（以下、LED式と記述する）は、電球式の欠点であるファントム現象の回避とメンテナンスコストの低減を目的に開発された信号灯である。各色の表示部内に多数のLEDを配置している。LED式は色レンズや大きな反射板がないため、ファントム現象がほとんど起こらない。また、LEDは電球に比べて寿命が長いため、光源の交換が数年間不要であり、メンテナンスコストが小さい。   The LED traffic signal light (hereinafter referred to as the LED type) is a signal light developed for the purpose of avoiding the phantom phenomenon, which is a drawback of the light bulb type, and reducing maintenance costs. A large number of LEDs are arranged in the display section of each color. The LED type has almost no phantom phenomenon because there is no color lens or large reflector. In addition, since LEDs have a longer life than light bulbs, light source replacement is not necessary for several years, and maintenance costs are low.

しかし、電球式では色フィルタの透過率によって各色の表示部の光度が異なっていた（赤：黄：緑＝1：約3：約1．3）が、LED式ではLED素子の発光効率によって光度が決まるため、電球式とLED式で各色の光度比が異なる（現状のLED式の光度比は赤：黄：緑＝1：約1：約1）。電球式に慣れた色覚障害者は点灯位置だけではなく、表示部の明るさの程度からどの表示部が点灯しているかを判断していたため、光度比が異なるLED式では電球式に比べて色を判断しにくい。   However, in the light bulb type, the luminous intensity of the display part of each color differs depending on the transmittance of the color filter (red: yellow: green = 1: about 3: about 1.3). In the LED type, the luminous intensity depends on the luminous efficiency of the LED element. Therefore, the light intensity ratio of each color differs between the light bulb type and the LED type (the current LED type light intensity ratio is red: yellow: green = 1: about 1: about 1). People with color blindness who are accustomed to the light bulb type judge not only the lighting position but also which display part is lit based on the brightness of the display part, so the LED type with a different luminous intensity ratio is more colored than the light bulb type. It is difficult to judge.

また夜間、遠方から交通信号灯を見る場合、信号灯体自体が暗くて見えないため、 LED式のように各表示部の光度比が似ていると、色覚障害者は点灯している位置を特定することが非常に難しい。
特開平１１−１１０６９２号公報 In addition, when viewing traffic signal lights from a distance at night, the signal light itself is dark and cannot be seen. It is very difficult.
JP-A-11-110682

上記のように、従来例のLED式交通信号灯は電球式と異なる光度比になっているため、色覚障害者がどの表示部が点灯しているか判断することが難しいという課題がある。もし、色覚障害者が表示部の点灯状態を誤れば重大な事故につながる可能性がある。解決策の一つとして、LED式の表示部の光度比を電球式と合致させる手法があるが、例えば黄色は赤色の3倍の光度が必要となるため、色覚障害者対策として黄色発光時は約3倍のエネルギーや他の色に比べて多くのLED個数が必要となってしまう。  As described above, the LED traffic signal lamp of the conventional example has a light intensity ratio different from that of the light bulb type, and thus there is a problem that it is difficult for a color blind person to determine which display unit is lit. If a person with color blindness makes a mistake in the lighting state of the display unit, it may lead to a serious accident. One solution is to match the luminous intensity ratio of the LED-type display unit to that of the bulb type.For example, yellow requires three times the luminous intensity of red, so as a measure against color blindness when emitting yellow light. Approximately 3 times more energy and a larger number of LEDs than other colors are required.

そこで、エネルギーやLEDの個数をできるだけ現状のLED式交通信号灯と変化させずに、色覚障害者がどの表示部が点灯しているかを判断しやすくするという課題を解決するため、消灯部分が消灯しているという情報を表示し、点灯している表示部と消灯している表示部をより区別しやすくさせることを目的とする。   Therefore, in order to solve the problem of making it easier for color-blind people to determine which display part is lit without changing the energy and number of LEDs with the current LED traffic signal lights as much as possible, the extinguished part is turned off. It is intended to make it easier to distinguish between a lit display portion and a non-lit display portion.

この発明の交通信号灯は、複数の小面積発光の光源を配置して表示する複数の表示部と、前記複数の表示部の点灯・消灯を制御する制御部とを備え、各表示部が異なる色光にて点灯する交通信号灯において、
所定の表示部が点灯している時に、別の表示部は少なくとも1個の前記光源が前記所定の表示部と異なる点灯をして、消灯状態であることを表示することを特徴とするものである。 The traffic signal lamp according to the present invention includes a plurality of display units for arranging and displaying a plurality of light sources of small-area light emission, and a control unit for controlling turning on / off of the plurality of display units, and each display unit has a different color light In the traffic light that lights at
When the predetermined display unit is turned on, the other display unit is characterized in that at least one of the light sources is turned on differently from the predetermined display unit and displays that the light is off. is there.

上記構成において、前記消灯状態を表す光源の強度は、前記表示部の表示用の光源の光の強度よりも低い。   The said structure WHEREIN: The intensity | strength of the light source showing the said light extinction state is lower than the intensity | strength of the light of the light source for a display of the said display part.

上記構成において、前記消灯状態を表す光源の光色は、前記表示部の表示用の光源の光色とは異なる色である。   The said structure WHEREIN: The light color of the light source showing the said light extinction state is a color different from the light color of the light source for a display of the said display part.

上記構成において、前記表示部の表示用の光源の発光スペクトルが狭帯域であり、かつ前記消灯状態を表す光源の光色は前記表示部の表示用の光源の緑の光色よりも短波長の青色である。   In the above-described configuration, the light emission spectrum of the light source for display of the display unit is a narrow band, and the light color of the light source representing the extinguishing state has a shorter wavelength than the green light color of the light source for display of the display unit. It is blue.

上記構成において、前記消灯状態を表す光源は図や文字を含む標識を形成するものである。   In the above configuration, the light source indicating the extinguished state forms a sign including a figure and characters.

この発明の交通信号灯によれば、表示部が標灯状態であることを表示する機能を有するため、色覚障害者に今どの位置が点灯しているかを従来例よりも確実に判断することができ、その結果交通信号灯の誤認による交通事故を防止することができる。   According to the traffic signal lamp of the present invention, since the display unit has a function of displaying that the indicator lamp is in the state of the headlamp, it is possible to more reliably determine which position is currently lit for the color blind person than the conventional example. As a result, it is possible to prevent traffic accidents due to misidentification of traffic signal lights.

消灯状態を表す光源の強度を、表示部の表示用の光源の光の強度よりも低くすると、消灯表示機能を常時点灯することができ、点灯している表示部で消灯状態を表示するための光源を消灯する制御が不要となるので、制御回路が簡単になり、かつ制御線などが少なくなるなど安価に開発することができる。   If the intensity of the light source indicating the light-off state is lower than the light intensity of the light source for display on the display unit, the light-off display function can be constantly turned on, and the light-off display unit can display the light-off state. Since the control for turning off the light source is not necessary, the control circuit can be simplified and the number of control lines and the like can be reduced.

消灯表示機能の光色を表示部に使用していない色にすることで、信号の誤認を防止することができる。   By making the light color of the turn-off display function a color that is not used in the display portion, signal misidentification can be prevented.

表示部の表示用の光源の発光スペクトルが狭帯域であり、かつ消灯状態を表す光源の光色は前記表示部の表示用の光源の緑の光色よりも短波長の青色にすることにより、光色を青色と色覚障害者に最適化したことで、消灯表示機能が視認しやすくなり、より点灯している表示部の位置情報を判断しやすくさせることができる。   The light emission spectrum of the light source for display of the display unit is a narrow band, and the light color of the light source representing the extinguishing state is set to a blue light having a shorter wavelength than the green light color of the light source for display of the display unit, By optimizing the light color for blue and color blind persons, it is easy to visually recognize the extinguished display function, and it is possible to make it easier to determine the position information of the display part that is lit.

消灯表示機能の光源で"図"や"文字"を形成させることで、他の色光に埋没せず一目で知覚できる。   By forming "Figures" and "Characters" with the light source of the off display function, it can be perceived at a glance without being buried in other color lights.

この発明の第１の実施の形態を図１から図３により説明する。すなわち、この交通信号灯は、例えばLED（発光ダイオード）のような小面積発光をする複数の光源１、１ａを用いた複数の表示部２〜４を有し、かつ複数の表示部２〜４でそれぞれ異なる色光を発する交通信号灯において、所定の表示部（例えば２）が点灯している時に、別の表示部３、４は少なくとも1個の光源１ａが所定の表示部２と異なる点灯をして、光源１ａがこれらの表示部３、４が現在消灯状態であることを表す機能（以下、消灯表示機能）を有するものである。   A first embodiment of the present invention will be described with reference to FIGS. That is, this traffic signal lamp has a plurality of display units 2 to 4 using a plurality of light sources 1 and 1a that emit light in a small area such as an LED (light emitting diode), for example, and includes a plurality of display units 2 to 4. In traffic signal lights that emit different colored lights, when a predetermined display section (for example, 2) is lit, the other display sections 3 and 4 have at least one light source 1a lit differently from the predetermined display section 2. The light source 1a has a function (hereinafter referred to as a light-off display function) indicating that the display units 3 and 4 are currently turned off.

図１において、５は支柱、６は円形の表示部２〜４を有する灯体、７は表示部２〜４の消灯・点灯を制御する制御部、８は電源線・制御線である。また表示部２は緑を表示し、表示部３は黄を表示し、表示部４は赤を表示する。消灯表示機能は、少なくとも1個の光源１ａで構成されればよいが、実施の形態では図２および図３に示すように５個の光源１ａを用い、そのうちの１個を表示部２〜４の中心にそれぞれ配置し、他の４個を表示部２〜４の中心を中心とする四角形のコーナ位置に配置して、５つ星またはＸを表示するように配列している。したがって、光源１ａが点灯したときは「×」あるいは「５つ星」の表示により消灯を表示していることがわかる。   In FIG. 1, 5 is a support | pillar, 6 is the lamp | ramp which has the circular display parts 2-4, 7 is a control part which controls lighting / lighting of the display parts 2-4, 8 is a power supply line / control line. The display unit 2 displays green, the display unit 3 displays yellow, and the display unit 4 displays red. The turn-off display function only needs to be configured by at least one light source 1a, but in the embodiment, as shown in FIGS. 2 and 3, five light sources 1a are used, one of which is the display units 2 to 4. Are arranged at the corners of a quadrangle centered on the center of the display units 2 to 4 and arranged to display five stars or X. Therefore, it can be seen that when the light source 1a is turned on, “X” or “5 stars” indicates that the light is turned off.

所定の表示部２を点灯させる時（ここでは『緑』を点灯させると仮定する）、制御部７から『緑』の表示部２の光源１を点灯させ、かつ『緑』の表示部２の消灯表示機能の光源１ａを消灯させ、『赤』と『黄』の表示部３、４の光源１を消灯させ、かつ消灯表示機能の光源１ａを点灯する命令信号を、各表示部表示用光源１および各消灯表示機能の光源１ａに伝達する。   When the predetermined display section 2 is turned on (here, it is assumed that “green” is turned on), the light source 1 of the “green” display section 2 is turned on from the control section 7 and the “green” display section 2 is turned on. The light source 1a for the off-display function is turned off, the light source 1 of the "red" and "yellow" display units 3 and 4 is turned off, and the command signal for turning on the light source 1a for the off-display function is sent to each display unit display light source. 1 and the light source 1a of each turn-off display function.

その結果、命令信号を受けた表示部表示用光源１と消灯表示用機能の光源１ａは図３のように点灯する。よって、光源１が点灯している位置と光源１が消灯している位置の両方を光源１、１ａによって視認する事ができるため、正常者はもとより色覚障害者においても今どの位置が点灯しているかを従来例よりも確実に判断する事ができる。   As a result, the display unit light source 1 and the turn-off display light source 1a that have received the command signal are turned on as shown in FIG. Therefore, both the position where the light source 1 is turned on and the position where the light source 1 is turned off can be visually recognized by the light sources 1, 1a. It can be determined more reliably than the conventional example.

この発明の第２の実施の形態を図４により説明する。この交通信号灯は、第１の実施の形態の交通信号灯の構成要素である消灯表示機能および制御部７の制御方法を変化させている。すなわち、小さな発光面積で非常に輝度（輝きの程度）が高い光源１は大気中や眼球内で散乱し、人間が知覚される像ではハレーションを起し凄んで見える（光滲現象）。
光源１の設置間隔が非常に狭い場合、この光滲現象によって光源１間の隙間が視認できなかったり、分離できずに1つの光源に見えたりする効果を利用し、消灯表示機能の光源１ａの光の強度は表示部表示用光源１の光の強度よりも低いこととした。こうすることで、ある所定の表示部２が点灯している時に、その表示部２では表示部表示用光源１と消灯表示機能の光源１ａの両方を点灯させても、消灯表示機能の光源１ａの光の強度が低いため、表示部表示用光源１のハレーションの中に埋没し、ほぼ視認できなくなる。よって、その見え方は第１の実施の形態と変わらず、したがって第１の実施の形態と同等の効果を得ることができる。また、制御部７は消灯表示機能の光源１ａが常時点灯される構成にすることで消灯表示機能を点灯・消灯する制御が不要になるため、制御回路が簡単になり、かつ制御線８などが少なくなるなど、第１の実施の形態で光源１ａを点灯・消灯する場合に比べて安価に開発することができる。 A second embodiment of the present invention will be described with reference to FIG. In this traffic signal lamp, the turn-off display function and the control method of the control unit 7 which are components of the traffic signal lamp of the first embodiment are changed. That is, the light source 1 having a small light emitting area and extremely high luminance (brightness level) is scattered in the atmosphere and in the eyeball, and in an image perceived by human beings, halation appears to be amazing (light bleeding phenomenon).
When the installation interval of the light sources 1 is very narrow, the gap between the light sources 1 cannot be visually recognized due to this light bleeding phenomenon, or the light source 1a can be seen as one light source without being separated. The light intensity is lower than the light intensity of the display unit light source 1. In this way, when a certain predetermined display unit 2 is turned on, even if both the display unit display light source 1 and the light source 1a with the off display function are turned on, the light source 1a with the off display function is displayed. Since the intensity of the light is low, it is buried in the halation of the light source 1 for displaying the display section and becomes almost invisible. Therefore, the appearance is not different from that of the first embodiment, and therefore, an effect equivalent to that of the first embodiment can be obtained. In addition, since the control unit 7 is configured so that the light source 1a of the light-off display function is always turned on, the control for turning on / off the light-off display function is unnecessary, so that the control circuit is simplified and the control line 8 and the like are provided. It can be developed at a lower cost compared to the case where the light source 1a is turned on / off in the first embodiment, for example, it is reduced.

この発明の第３の実施の形態を図４により説明する。消灯表示機能の光源１ａの光色が表示部２〜４と同じ色だった場合、遠方から見て表示部２〜４が点のように見えていたり、道路上の構造物や雨粒や雪などで前方の一部が見えないような場合、消灯表示機能の光源１ａの光色により誤認する可能性がある。例えば、表示部２が『緑』点灯し、表示部３、４の消灯表示機能の光源１ａが『赤』、『黄』を点灯している状況で、道路構造や天候の理由で『赤』の表示部４しか見えない場合、消灯表示機能が赤色で点灯しているため、誤ってブレーキを踏み後方車両に追突される可能性がある。よって、消灯表示機能の光源１ａの光色を表示部表示用光源１の光色とは異なる色を用いることによって、運転者の誤認を防止することができるという効果がある。   A third embodiment of the present invention will be described with reference to FIG. When the light color of the light source 1a for the off-display function is the same color as the display units 2 to 4, the display units 2 to 4 look like dots from a distance, structures on the road, raindrops, snow, etc. In the case where a part of the front cannot be seen, there is a possibility that it may be misidentified by the light color of the light source 1a of the extinguishing display function. For example, in a situation where the display unit 2 is lit “green” and the light source 1a of the display unit 3 or 4 is turned off “red” or “yellow”, “red” is displayed due to road structure or weather. When only the display unit 4 is visible, the turn-off display function is lit in red, so there is a possibility that the brake will be accidentally stepped on and a rear vehicle will collide. Therefore, the use of a light color of the light source 1a of the extinguishing display function that is different from the light color of the light source 1 for displaying the display unit has an effect of preventing the driver from misidentifying.

この発明の第４の実施の形態を図４により説明する。色覚障害者にはその見え方の違いから様々な種類に分類される。色覚障害者は特に黄色人種で発生頻度が高く、かつ色覚障害として程度が重いのは2色型色盲の「第1色盲（赤色が認識できない）」と「第2色盲（緑色が認識できない）」である。一般的に日本人男性の5％、日本人女性の0．2％が「第1色盲」あるいは「第2色盲」と言われている。また「第3色盲（青色が認識できない）」は0．007％と第1色盲・第2色盲に比べて非常に少ない。   A fourth embodiment of the present invention will be described with reference to FIG. People with color blindness are classified into various types according to their visual differences. People with color blindness, especially in the yellow race, have a high incidence, and the degree of color blindness is heavy. The two-color type blindness "first color blindness (cannot recognize red)" and "second color blindness (green cannot be recognized)" Is. Generally, 5% of Japanese men and 0.2% of Japanese women are said to be “first color blind” or “second color blind”. “3rd color blindness (blue cannot be recognized)” is 0.007%, which is very small compared to the 1st and 2nd color blindness.

第1色盲と第2色盲の色覚障害者が正常者と同様に知覚できる色として青色がある。そして、第1色盲と第2色盲の色覚障害者は単に青色が見えるだけでなく、青色の弁別能が正常者よりも高いことが知られている（池田光男著：色彩工学の基礎、p．194、図9．2、朝倉書店（1980））。また図５に示す分光視感効率を見ても、第1色盲・第2色盲ともに480nm以下の青色光では正常者よりも感度が高い。   Blue is a color that can be perceived by color blind people with the first and second color blindness in the same way as normal people. And it is known that color blind people with color blindness of the first and second color blinds not only see blue, but also have a higher blue discrimination ability than normal (Mitsuo Ikeda: Basics of Color Engineering, p. 194, Fig. 9.2, Asakura Shoten (1980)). Also, looking at the spectral luminous efficiency shown in FIG. 5, both the first color blindness and the second color blindness are higher in sensitivity than the normal person in blue light of 480 nm or less.

よって、光源１ａに従来例の交通信号灯の『緑』よりもより短波長の光である『青』を用いることにより、第３の実施の形態で示した交通信号灯の色光との誤認を防ぎ、かつ色覚障害者に確実に青色を認識させ、表示灯のどの位置が点灯しているか判断しやすくなるという効果を生じる。   Therefore, by using “blue”, which is light having a shorter wavelength than “green” of the traffic light of the conventional example, as the light source 1a, it is possible to prevent misidentification with the colored light of the traffic light shown in the third embodiment. In addition, there is an effect that the color blind person can be surely recognized blue and it is easy to determine which position of the indicator lamp is lit.

この発明の第５の実施の形態を図６および図７により説明する。消灯表示機能の光源１ａはその表示部２〜４が点灯していないことを示すために存在するのだから、その消灯表示機能の光源１ａが複数ある場合は、他の色光に埋没せず一目で消灯していることを知覚できるよう光源によって"図"や"文字"を形成させた方が良い場合がある。   A fifth embodiment of the present invention will be described with reference to FIGS. Since the light source 1a with the light-off display function exists to indicate that the display units 2 to 4 are not lit, when there are a plurality of light sources 1a with the light-off display function, it is not buried in other color lights at a glance. In some cases, it is better to form a “figure” or “character” with a light source so that it can be perceived to be turned off.

よって、図６に示す交通信号灯では、例えば表示部３の箇所が点灯していないことを示す「×」や、表示部２がその範囲に点灯することを示す「○」などの"図"を光源１ａで形成している。   Therefore, in the traffic signal lamp shown in FIG. 6, for example, “X” indicating that the portion of the display unit 3 is not lit or “O” indicating that the display unit 2 is lit in the range is used. The light source 1a is used.

図７は、表示部の色を示すような"文字"例えばＹ（Ｙｅｌｌｏｗの頭文字）や、表示部４について「赤」などを光源１ａで形成しても良い。   In FIG. 7, a “character” indicating the color of the display unit, for example, Y (acronym for Yellow), or “red” for the display unit 4 may be formed by the light source 1 a.

なお、その他の標識として文字等のほか、記号などを光源１ａにより形成してもよい。   In addition to the characters and the like as other signs, symbols or the like may be formed by the light source 1a.

この発明の第１の実施の形態の交通信号灯の説明図である。It is explanatory drawing of the traffic signal lamp of 1st Embodiment of this invention. 表示部の拡大図である。It is an enlarged view of a display part. 第２の実施の形態の交通信号灯の表示部の点灯状態の説明図である。It is explanatory drawing of the lighting state of the display part of the traffic signal light of 2nd Embodiment. 第３の実施の形態の交通信号灯の表示部の点灯状態の説明図である。It is explanatory drawing of the lighting state of the display part of the traffic signal light of 3rd Embodiment. 色覚障害者（Ｐ：第１色盲、Ｄ：第２色盲）と正常者（Ｎ）の分光視感効率の特性図を示し、横軸は波長λ（ｎｍ）、縦軸は比視感度である。A characteristic diagram of spectral luminous efficiency of a color blind person (P: 1st color blindness, D: 2nd color blindness) and normal person (N) is shown, the horizontal axis is wavelength λ (nm), and the vertical axis is relative luminous efficiency. . 第５の実施の形態の表示部の点灯状態の説明図である。It is explanatory drawing of the lighting state of the display part of 5th Embodiment. 表示部の別の標識による表示形態における点灯状態の説明図である。It is explanatory drawing of the lighting state in the display form by another label | marker of a display part.

符号の説明Explanation of symbols

１ 光源
１ａ 光源
２ 表示部
３ 表示部
４ 表示部 DESCRIPTION OF SYMBOLS 1 Light source 1a Light source 2 Display part 3 Display part 4 Display part

Claims (5)

複数の小面積発光の光源を配置して表示する複数の表示部と、前記複数の表示部の点灯・消灯を制御する制御部とを備え、各表示部が異なる色光にて点灯する交通信号灯において、
所定の表示部が点灯している時に、別の表示部は少なくとも1個の前記光源が前記所定の表示部と異なる点灯をして、消灯状態であることを表示することを特徴とする交通信号灯。 In a traffic signal lamp comprising a plurality of display units arranged to display a plurality of light sources of small-area light emission, and a control unit for controlling lighting / extinction of the plurality of display units, each display unit lighting with a different color light ,
When the predetermined display section is lit, another display section lights up at least one of the light sources differently from the predetermined display section, and displays a traffic signal lamp characterized by . 前記消灯状態を表す光源の強度は、前記表示部の表示用の光源の光の強度よりも低い請求項１記載の交通信号灯。   The traffic signal lamp according to claim 1, wherein an intensity of the light source indicating the light-off state is lower than an intensity of light of a display light source of the display unit. 前記消灯状態を表す光源の光色は、前記表示部の表示用の光源の光色とは異なる色である請求項1記載の交通信号灯。   2. The traffic signal light according to claim 1, wherein a light color of the light source indicating the light-off state is a color different from a light color of a light source for display of the display unit. 前記表示部の表示用の光源の発光スペクトルが狭帯域であり、かつ前記消灯状態を表す光源の光色は前記表示部の表示用の光源の緑の光色よりも短波長の青色である請求項３記載の交通信号灯。   The light emission spectrum of the light source for display of the display unit is a narrow band, and the light color of the light source representing the extinguished state is blue having a shorter wavelength than the green light color of the light source for display of the display unit. Item 3. Traffic light. 前記消灯状態を表す光源は図や文字を含む標識を形成する請求項１記載の交通信号灯。   The traffic light according to claim 1, wherein the light source indicating the light-off state forms a sign including a figure or a character.
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Cited By (5)

* Cited by examiner, † Cited by third party
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JP2012510123A (en) * 2008-12-05 2012-04-26 ダエ リュク イツ カンパニー リミテッド LED signal light
JP2015032163A (en) * 2013-08-02 2015-02-16 コイト電工株式会社 Signal light instrument
JP2019067291A (en) * 2017-10-04 2019-04-25 コイト電工株式会社 Lighting control device for signal light and signal light device
KR102210689B1 (en) * 2020-03-17 2021-02-02 (주)한국원자력 엔지니어링 Traffic Lights for Color Blindness
JP2021051580A (en) * 2019-09-25 2021-04-01 コイト電工株式会社 Lamp and signal lamp

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2012510123A (en) * 2008-12-05 2012-04-26 ダエ リュク イツ カンパニー リミテッド LED signal light
JP2015032163A (en) * 2013-08-02 2015-02-16 コイト電工株式会社 Signal light instrument
JP2019067291A (en) * 2017-10-04 2019-04-25 コイト電工株式会社 Lighting control device for signal light and signal light device
JP2021051580A (en) * 2019-09-25 2021-04-01 コイト電工株式会社 Lamp and signal lamp
JP7457477B2 (en) 2019-09-25 2024-03-28 コイト電工株式会社 Lights and signal lights
KR102210689B1 (en) * 2020-03-17 2021-02-02 (주)한국원자력 엔지니어링 Traffic Lights for Color Blindness
WO2021187763A1 (en) * 2020-03-17 2021-09-23 (주)한국원자력 엔지니어링 Traffic light for color-blind and color-deficient people

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