JPH0887696A - Traffic signal - Google Patents

Abstract

PURPOSE: To provide the energy saved type traffic signal, to prolong its service life and to respective emit light in red, yellow and blue on one display part by arranging a pair of red and green light emitting diodes as a light emitting unit and forming a dot matrix with this light emitting unit. CONSTITUTION: A traffic signal 1 is composed of the body 2 of the signal and one light emitting display part 3. This light emitting display part 3 is constituted by arranging plural light emitting units 30 in the shape of the dot matrix. Besides, the light emitting unit 30 is constituted by arranging a pair of red and green light emitting diodes inside a translucent case body. When emitting and displaying only the light in red, only the red light emitting diodes are emitted and when emitting and displaying the light in green, only the green light emitting diodes are emitted and displayed. Further, when the red light emitting diodes and the green light emitting diodes are respectively emitted at the same time, the light in yellow can be emitted and displayed on the same light emitting display part 3 because of the principle of three primary colors of light.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a traffic signal, and its object is to save power, have a long service life, and clearly display a color tone to smoothly control traffic such as pedestrians, automobiles, and trains. In addition to being able to
An object is to provide a traffic signal that can display three colors, yellow and green.

[0002]

2. Description of the Related Art As a traffic signal installed at an intersection such as a road, a traffic signal having a structure shown in FIG. 8 is generally used. In this traffic signal A, the inside of the housing b is separated by the partition plate c.
An incandescent lamp e is arranged together with the reflector d in each room, and red, yellow, and
One colored lens f of three colors is arranged for blue lighting, and each incandescent lamp e is lit in a prescribed order and at a prescribed interval to emit red, yellow, and blue light, respectively.

[0003]

However, in the traffic light shown in FIG. 8, there is a problem that the incandescent lamp, which is a light emitting source, has a short life and must be frequently replaced for ensuring safety. Moreover, since the power consumption is large, there is a problem that it is not suitable for the recent circumstances where energy saving is desired. Furthermore, red using an incandescent lamp,
In yellow and blue emission, it is difficult for light to diffuse,
The visibility is hindered by conditions such as direct sunlight or visual angle. Therefore, especially in the case of a straight ahead vehicle, the visibility of the color tone from a distance is poor, which may cause overspeeding, or it may be difficult to check the color tone of the left and right signals at intersections, and the number of departures may increase. However, there was a problem that it could easily become one of the factors that cause a traffic accident, such as contact with pedestrians. For this reason,
In the conventional incandescent lamp type traffic light, a method of attaching a “peak” to the traffic light is adopted in order to reduce the influence of sunlight, but the visibility of the color tone from a distance is still insufficient. In addition, the traffic signal A has to be divided into three lights of red, yellow, and blue, respectively, and there has been a problem that it cannot be made compact. Therefore, in the industry, it is an energy-saving type with low power consumption, has a long life, and has excellent visibility of the color tone that emits light, and can smoothly control traffic such as automobiles, pedestrians, trains, etc., and also red, yellow, blue There has been a demand for the creation of a traffic signal device suitable for downsizing, in which each of them can be luminescently displayed on one display unit.

[0004]

According to the present invention, a red light emitting diode and a green light emitting diode are arranged in a pair to form a light emitting unit, and a plurality of the light emitting units are arranged so as to form a dot matrix in the traffic signal body. By providing a traffic signal which is characterized in that one light emitting display unit is formed, the above-mentioned conventional problems are solved.

[0005]

According to the first aspect of the invention, since the LED is used as the light emitting body, it has a long life and can be semi-permanently used. Moreover, since the power consumption is small, it becomes an energy-saving traffic signal. Further, a light emitting diode (LE
Since D) is used, the light diffusibility is good, and the color tone from a distance can be very clearly visible. Therefore, it is possible to suppress an excessive speed increase for a straight-ahead vehicle from a distance, and it is possible to suppress an inadvertent start-off for an approaching vehicle at an intersection, which is excellent in traffic control. In addition, as a traffic light, only red and green light emitting diodes are used, and a plurality of light emitting diodes in which the light emitting diodes of these two colors are arranged in pairs are arranged in a traffic light body so as to form a dot matrix. Therefore, red like a traffic light using a conventional incandescent lamp,
You don't have to have three separate compartments for yellow and blue,
Since red, yellow, and green can be respectively emitted and displayed at one display portion, a very compact traffic signal can be achieved. That is, in a single light emitting device, by emitting red and green light emitting diodes at the same time, yellow can be generated according to the principle of the three primary colors of light, and various other colors can be produced by changing the mixing ratio of the two colors. It can also be generated, and can express multiple colors with a very simple structure. This traffic signal can be used as a warning signal for trains or a display for highways in addition to motorways. According to the second aspect of the invention, since the light emitting display section is provided only at one place, a very compact traffic signal can be obtained. Claim 3
In the invention described above, since two or more light emitting display sections are provided, any signal can be displayed.

[0006]

The structure of a traffic signal according to the present invention will be described below in detail with reference to the drawings. FIG. 1 is a front view showing an embodiment of a traffic signal device of the present invention. As shown in the figure, the traffic signal 1 of the present invention is composed of a signal body 2 and one light emitting display section 3 provided on the signal body 2. The light emitting display unit 3 is configured by arranging a plurality of light emitting units 30 in a dot matrix shape.

As shown in FIG. 2, the light emitting unit 30 comprises a transparent case body 301 in which a red light emitting diode 30a and a green light emitting diode 30b are arranged in a pair. The light emitting diodes 30a and 30b are respectively connected to the switch circuit 30c, and the red light emitting diode 30a and / or the green light emitting diode 30b are configured to emit light by any means. That is, in the case of displaying only red light, only the red light emitting diode 30a emits light, and in the case of displaying green light only, only green light emitting diode 30b emits and displays. Further, when the red light emitting diode 30a and the green light emitting diode 30b arranged in the transmissive case body 301 respectively emit light at the same time, yellow can be emitted and displayed on the same light emitting display unit 3 according to the principle of the three primary colors of light. .

FIG. 3 is an explanatory view showing a state in which the traffic signal 1 of the present invention is installed on a motorway H. In the traffic signal 1 of the present invention, since the dot matrix is formed by arranging a plurality of the light emitting single bodies 30 by the light emitting diodes 30a and 30b to form the display unit 3, the light diffusing property is very good, and the direct sunlight and the viewing angle are good. Therefore, the visibility is not impaired, and the displayed color tone can be clearly seen. Therefore, for straight-ahead vehicles, the emission of color tone from a distance is clear, so it is possible to regulate unintentional overshooting of the speed. Contact can be prevented and good traffic control can be performed. Further, in the traffic signal 1, the light emitting means may be a solar cell S provided as shown in FIG. 3, for example. In this case, it can be continuously used by charging (storing) the necessary electricity for blinking at night in the daytime.

The arrangement pattern of the light emitting units 30 in the present invention is not particularly limited, and the light emitting units 30 may be arranged in the light emitting display section 3 of the traffic light body 2 in a 16 × 16 arrangement or in a 24 × 24 arrangement. Either of them may be used. In this case, for example, 16 × as shown in FIG.
With the 16 array structure, it is possible to display JIS level 1 characters and symbols, and with the 24 × 24 array structure as shown in FIG. 5, the JIS level 2 characters and symbols can be displayed.
The symbol can be displayed. By limiting the dots to be arranged in this way to specific ones, it is possible to display not only the color tone but also the light emission display of characters and symbols. Therefore, in addition to the traffic lights that display red, yellow, and green, it can be used as a traffic light that displays "open" and "closed" as shown in FIG. 6 at a tollgate such as an expressway. Further, in the present invention, as the light emitting display unit 3, as shown in the above-described embodiment, in addition to the configuration in which only one is provided in the traffic light body 2, two or more are provided in one traffic light body 2 as in the embodiment shown in FIG. It may be configured. By providing two or more light emitting display units 3 in this manner, it is possible to display an arbitrary signal. Furthermore, the red light emitting diode 30a and the green light emitting diode 30
By changing the mixing ratio of the color with b, it is possible to generate a color tone other than yellow. Further, since the visibility from a distant place is good, it is also possible to install the train alarm signal 1 on the track Z as shown in FIG.

[0010]

As described above in detail, in the invention according to claim 1, a red light emitting diode and a green light emitting diode are arranged in a pair to form a light emitting single body, and this light emitting single body forms a dot matrix in the traffic signal body. Since it is a traffic signal that is characterized in that a plurality of light emitting display sections are arranged to form one light emitting display section, it can be an energy-saving and long-life traffic signal and has good light diffusivity and direct light. The luminescent color tone is not hindered by sunlight or viewing angle,
On a motorway, it is possible to clearly see the color tone of a vehicle going straight from a distance or an approaching vehicle at an intersection, to prevent excessive speeding and inadvertent departure from departure, and to perform smooth traffic control. It has an excellent effect. Moreover, since the light emission of the color tone in the light emitting display section is clear, it is not necessary to attach a "peak" provided to prevent the influence of sunlight in the conventional traffic signal, so that the manufacturing is simple. Play. Further, it has an excellent effect that light emission of three colors of red, yellow and green is possible with one light emitting display section. The invention according to claim 2 is the traffic signal apparatus according to claim 1, characterized in that only one light emitting display section is provided. The effect is that the traffic light itself can be made very compact. The invention according to claim 3 is characterized in that two or more light emitting display portions are provided.
Since it is the traffic signal described in (1), it has an effect of being an excellent traffic signal that can freely display an arbitrary signal on a highway or the like.

[Brief description of drawings]

FIG. 1 is a front explanatory view showing an embodiment of a traffic signal device according to the present invention.

FIG. 2 is an explanatory diagram showing an example of a light emitting unit used in the traffic signal according to the present invention.

FIG. 3 is an explanatory diagram showing a state in which the traffic signal of the embodiment shown in FIG. 1 is installed on a motorway.

FIG. 4 is an explanatory diagram showing an example of an array pattern of light emitting units in the light emitting display section of the traffic signal according to the present invention.

FIG. 5 is an explanatory diagram showing another example of an array pattern of light emitting units in a light emitting display section of a traffic signal according to the present invention.

FIG. 6 is an explanatory diagram showing another embodiment of the traffic signal device according to the present invention.

FIG. 7 is a use state explanatory view showing another embodiment of the traffic signal apparatus according to the present invention.

FIG. 8 is an external view showing an example of a traffic signal using a conventional incandescent lamp.

[Explanation of symbols]

 1 Traffic Signal 2 Traffic Light Main Body 3 Light Emitting Display Section 30 Light Emitting Single Element 30a Red Light Emitting Diode 30b Green Light Emitting Diode

Claims (3)

[Claims] 1. A red light emitting diode and a green light emitting diode are arranged in a pair to form a light emitting unit, and a plurality of the light emitting units are arranged so as to form a dot matrix in the traffic light body to form one light emitting display unit. A traffic signal characterized by being formed. 2. The traffic signal apparatus according to claim 1, wherein only one light emitting display unit is provided. 3. The traffic signal apparatus according to claim 1, wherein two or more light emitting display sections are provided.