JP2782677B2 - Display for traffic signal - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a display device for a traffic signal, and more particularly to a display device for a traffic signal which is disposed at a position visible at the same time as the traffic signal and displays information such as traffic information, traffic slogans, and advertisements. About.

[0002]

2. Description of the Related Art Traffic signals are intended to smooth the flow of vehicles and people and to prevent traffic accidents. For this purpose, the traffic light is sequentially turned on in three colors of blue, yellow and red by time control. In addition, a display board for displaying the name of an installation place of the traffic light and a display board for describing an advertisement are attached to upper and lower portions or side surfaces of the traffic light.

[0003]

By the way, in the above-mentioned display panel, it is easy to confirm the display contents by external light in the daytime, but it is difficult to confirm the display contents when the external light is dark at night or the like. There were problems such as difficulty. In addition, there is a problem that it is difficult for a driver or a pedestrian to confirm the signal light by sunlight in the daytime only by lighting the signal with the traffic signal alone.

The present invention has been made in view of such circumstances, and has a function of easily confirming a signal color by a driver or a pedestrian, and also has a function of confirming traffic information, a traffic slogan, and an advertisement function by advertising. An object of the present invention is to provide a display device for a traffic light.

[0005]

In order to achieve the above object, the invention according to claim 1 of the present application is provided at a position visible at the same time as a traffic signal and transmits character information such as traffic information, traffic slogans, and advertisements. Display means for displaying, and detection means disposed on any one of the red, blue and yellow lamps of the traffic signal and detecting the on / off state of the lamp without changing the electric circuit of the traffic signal. The display means is lit in the same color as the lighting color of the lamp in synchronization with the lighting of the lamp provided with the detection means, based on the detection output of the detection means, and the display is synchronized with the turning off of the lamp. Display control means for turning off the means.
Further, the invention according to claim 2 of the present application is characterized in that the display means is provided at a position visible at the same time as the traffic signal and displays character information such as traffic information, a traffic slogan, an advertisement, and the like, and is provided on a red lamp of the traffic signal. Detecting means for detecting the on / off state of the lamp without changing the electric circuit of the traffic signal; and displaying the display means in red in synchronization with the lighting of the red lamp based on the detection output of the detecting means. Display control means for turning on the light and turning off the display means in synchronization with the turning off of the lamp.

Further, as set forth in claim 4, the display means causes the background of the character information on the display surface of the display means to emit red light, and the display control means controls the character information on the display surface of the display means. Is turned on or off.

[0007]

According to the present invention, display means for displaying character information such as traffic information, traffic slogans, advertisements, etc., is arranged at a position visible at the same time as the traffic signal, and this display means is used to turn on the lamp of the traffic signal. The lamp is lit in the same color as the lighting color (for example, red) of the lamp in synchronization with it, and the display unit is turned off in synchronization with the turning off of the lamp. That is, the on / off state of the red lamp of the traffic signal is detected without changing the electric circuit of the traffic signal, and based on the detection output of this detecting means, the display means is displayed in red only when the red lamp is on. And the display means is turned off while the lamps of other colors are on. Thus, the red signal can be confirmed not only with the signal light but also with the display color of the display means, and various character information displayed on the display means can be confirmed at the same time. In addition, since the on / off state of each color of the traffic signal is detected without changing the electric circuit of the traffic signal and the electric circuit of the traffic signal is not changed, the safety of the traffic signal can be ensured. it can.

[0008]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Preferred embodiments of the display device for a traffic signal according to the present invention will be described below with reference to the accompanying drawings. FIG. 1 shows a traffic safe constituting a traffic light display device according to the present invention.
It is an external view which shows the state in which the ty panel (henceforth a TS panel) was attached to the traffic signal. In the figure, reference numeral 10 denotes a known traffic signal having three colors of blue, yellow, and red, and is attached to a support rod 12 from a telephone pole (not shown) via a fitting 14 below.

Reference numeral 20 denotes a TS panel, specifically, a color plasma display panel. The TS panel 20 is mounted above the traffic signal 10 via the mounting bracket 14 so that the TS panel 20 can be visually recognized simultaneously with the traffic signal 10. At the intersection of a crossroad as shown in FIG.
For example, four T-mounts mounted on a traffic light for roadways
A total of twelve S panels 20A and eight TS panels 20B attached to sidewalk traffic signals are installed. And these 12 TS panels 20A, 20A
In B, the display pattern on each panel surface is simultaneously controlled from the controller 30 via the optical communication cable 35.

FIG. 3 is a block diagram showing one embodiment of the internal configuration of the TS panel and the controller. As shown in FIG. 1, the TS panel 20 mainly includes a synchronization detector 21, a central processing unit (CPU) 23, a memory 24, a video signal generator 25, a display control circuit 26, and a light emitting panel 27. The controller 30 mainly includes a 16-channel multiplexer 31 and an RS for performing optical communication.
232C circuit 32, a memory card unit 33, and a power supply unit 34.

The controller 30 is operated to change the display pattern of traffic information, traffic slogans, advertisements and the like displayed on the TS panel 20. By changing the memory card in the memory card unit 33, the controller 30 is operated. Is read in advance, and the display pattern data is transferred to each TS panel 20 via the RS-232C circuit 32, the 16-channel multiplexer 31, and the optical communication cable 35.

The display pattern data transferred from the controller 30 is stored in a memory 24 via an optical communication interface (not shown) of the TS panel 20 and a CPU 23. A synchronization signal is applied to the CPU 23 of the TS panel 20 from the synchronization detector 21 via the traffic light interface 22. The synchronization detector 21 is provided at the red lamp of the traffic signal 10 and outputs a synchronization signal indicating the ON / OFF state of the red lamp. The synchronization detector 21 is electrically connected to the electric circuit of the traffic signal 10. Not a detector.

For example, as this kind of synchronization detector 21, as shown in FIG. 4, a red lamp 10A of a traffic signal is used.
A coil 21A is wound around a conducting wire 10B for lighting a lamp, and converts a magnetic field generated by a current flowing when the lamp is turned on into an electric signal, or is disposed opposite to a red lamp 10A of a traffic signal as shown in FIG. A photosensor 21B or the like that converts the light when the lamp is turned on into an electric signal is conceivable. In addition, in FIG. 5, 10B is a sunshade cover of the lamp.

In FIG. 3, a CPU 23 has a memory 24
For example, based on the display pattern data stored in the memory and the synchronizing signal indicating the ON / OFF state of the red lamp applied via the traffic light interface 22, for example, the advertising character and the pattern are set to emit white light, and the red color is set to the background color. A video signal is output to the display control circuit 26 via the video signal generator 25 so as to emit red light only when it is turned on, and the display control circuit 26 causes the light emitting panel 27 to emit light based on the input video signal. That is, the light emitting panel 27
Indicates that information such as advertising characters and patterns is always displayed in white,
Only the background is turned on or off in synchronization with the red lamp.

Thus, the TS panel 20 can provide various information to the driver and the pedestrian, and the entire large panel surface is lit red in synchronization with the red color of the traffic light, so that the TS panel 20 can be provided from a distance. It can function as an auxiliary traffic light that can easily see red. Further, since the TS panel 20 is provided completely separated from the electric system of the traffic signal, the reliability of the traffic signal is not impaired.

The operating temperature range of the TS panel 20 is 0 °.
The thermo-heater and the fan heater 29 are driven by the power supply 28 so that the temperature becomes C to 45 ° C. The power supply 28 supplies power to each circuit of the TS panel 20. Also,
In the present embodiment, the TS panel is configured using a color plasma display panel that can appropriately change a display pattern. However, the present invention is not limited to this. For example, characters, figures, and the like are drawn on a display plate formed of a light-transmitting material. The display panel may be configured to be illuminated with a red backlight.
Further, in the present embodiment, the TS panel is turned on / off in synchronization with the red lamp. However, the present invention is not limited to this, and the TS panel may be turned on / off in synchronization with blue or yellow. Good.

[0017]

As described above, according to the display device for a traffic signal according to the present invention, the display means for displaying information such as traffic information, traffic slogans, advertisements, etc. is lit in red in synchronization with the red color of the traffic signal. As a result, it is possible to function as an auxiliary traffic signal that allows a driver or a pedestrian to easily see the red signal. In addition, since the display device is disposed at a position that can be viewed at the same time as the traffic signal, it is possible to provide a display device with a high advertisement function when transmitting various information to a driver or a pedestrian. Furthermore, according to this display device for traffic signals, it is completely separated from the electric system of the traffic signals,
Since there is no need to change the electrical circuit of the traffic light,
The safety of the traffic signal can be ensured.

[Brief description of the drawings]

FIG. 1 is an external view showing a state in which a display device for a traffic signal according to the present invention is mounted on a traffic signal.

FIG. 2 is a diagram illustrating an example of an arrangement of a TS panel and a controller at a crossroad intersection;

FIG. 3 is a block diagram illustrating a configuration example of a TS panel and a controller.

FIG. 4 is a diagram illustrating an example of a synchronization detector illustrated in FIG. 3;

FIG. 5 is a diagram showing another example of the synchronization detector shown in FIG. 3;

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 10 ... Traffic light 10A ... Lamp 20, 20A, 20B ... TS panel 21 ... Synchronous detector 21A ... Coil 21B ... Photo sensor 23 ... CPU 24 ... Memory 25 ... Video signal generator 26 ... Display control circuit 27 ... Lighting panel 30 ... controller

──────────────────────────────────────────────────続 き Continuation of the front page (72) Inventor Terumasa Inami 1-13-12 Ginza, Chuo-ku, Tokyo Inside AIBI Co., Ltd. (56) References JP-A-53-147500 (JP, A) JP-A-55-127699 (JP, A) JP-A-55-127700 (JP, A) JP-A-3-280199 (JP, A) Fully open 1984-147298 (JP, U) Really open 61-147498 (JP, U) Japanese Utility Model 1-84198 (JP, U) (58) Fields investigated (Int. Cl. ⁶ , DB name) G08G 1/095 G09F 9/00

Claims (6)

(57) [Claims] 1. A display means disposed at a position visible at the same time as a traffic signal to display character information such as traffic information, a traffic slogan, and an advertisement, and one of red, blue, and yellow of the traffic signal Detecting means disposed on one of the lamps for detecting the on / off state of the lamps without changing the electric circuit of the traffic signal; lighting the lamps on which the detecting means is disposed based on the detection output of the detecting means Display control means for lighting the display means in the same color as the lighting color of the lamp in synchronization with the display means, and turning off the display means in synchronization with the turning off of the lamp. apparatus. 2. A display means disposed at a position visible at the same time as a traffic signal to display character information such as traffic information, a traffic slogan, and an advertisement; Detecting means for detecting an on / off state without changing an electric circuit of a traffic signal; and turning on the display means in red in synchronization with lighting of a red lamp based on a detection output of the detecting means, A display device for a traffic signal, comprising: display control means for turning off the display means in synchronization with turning off the light. 3. The traffic signal display device according to claim 1, wherein said display means comprises any one of a color plasma display panel, a fluorescent display tube, a light emitting diode panel, and a liquid crystal display. 4. The display device according to claim 1, wherein the display unit causes the background of the character information on the display surface of the display unit to emit red light, and the display control unit turns on or off only the background of the character information on the display surface of the display unit. Item 6. A display device for a traffic light according to Item 1. 5. The detecting means according to claim 1, wherein the detecting means is a magneto-electric converting means disposed on a conductor for lighting a red lamp of the traffic signal, and converting a magnetic field generated by a current flowing when the lamp is turned on into an electric signal. Display for traffic signals. 6. The traffic signal display device according to claim 1, wherein said detection means is a photosensor arranged to face a red lamp of the traffic signal and converts light when the lamp is turned on into an electric signal.