KR102194766B1 - Apparatus of displaying traffic signal information - Google Patents

Abstract

A signal input unit for receiving a traffic light control signal and an image signal indicating a change of the traffic signal; A control unit for generating traffic signal information indicating contents of a current traffic signal according to the traffic light control signal; A display unit that displays the generated traffic signal information and an image according to the image signal; The display unit includes a rotation support unit that adjusts one or more of a direction, an angle, and a height facing the display unit, wherein, when the current traffic signal is a driving signal, the display unit faces the pedestrian to cross the pedestrian crossing. The display unit adjusts the angle of the display unit in a direction to block entry, and when the current traffic signal is a walking signal, the display unit faces the driver and blocks the vehicle of the driver from entering the crosswalk. There is provided a traffic signal information display device characterized in that the angle is adjusted.

Description

Traffic signal information display device {APPARATUS OF DISPLAYING TRAFFIC SIGNAL INFORMATION}

The present invention relates to a traffic signal information display device, and more particularly, to a signal information display device that displays signal information and various additional information in a direction facing a driver or a pedestrian when changing between a walking signal and a driving signal.

Traffic lights have a function of determining the order of progress of vehicles for each flow at an intersection or crosswalk, or by setting the order of progress between pedestrians and vehicles.

For example, at intersections where roadways diverge in two or more directions, traffic lights are installed to allow vehicles for each direction to proceed sequentially, and at crosswalks where pedestrians cross the roadway, the vehicle is temporarily stopped for safe walking. Traffic lights are installed to suppress it.

Accordingly, the driver driving the vehicle recognizes the color of the signal lit by the traffic light and drives or stops in the direction of the vehicle.

Traffic lights are divided into traffic lights for pedestrians and traffic lights for vehicles. Traffic lights for pedestrians are mainly located at both ends of a crosswalk, and traffic lights for vehicles are mostly located in the air above the road. In addition, traffic lights for pedestrians can emit green and red, and traffic lights for vehicles can emit green, yellow, and red.

In particular, both vehicle traffic lights and pedestrian traffic lights are installed at crosswalks. When a pedestrian signal is turned on, that is, when a pedestrian traffic light is green and a vehicle traffic light is red, the vehicle must stop. In addition, a stop line is displayed on the road to prevent vehicles from entering the crosswalk at the time of a walking signal. However, when the driver does not see the traffic light or attempts to bite the tail due to the driver's carelessness, the vehicle enters the crosswalk frequently.

Meanwhile, a sidewalk for pedestrians is disposed adjacent to a roadway where a vehicle is driven, and a variable separator is sometimes installed at the boundary between the roadway and the sidewalk for the safety of pedestrians. In addition, in the center of a two-way roadway, a center line is marked to prevent reverse driving of vehicles traveling in different directions, and a central separator is sometimes installed on this center line to prevent vehicles traveling in different directions from entering. .

Therefore, not only the vehicle's invasion into the sidewalk is prevented by the variable separator, but also pedestrians in the sidewalk are also prevented from invading the roadway, thereby preventing safety accidents, and vehicles traveling in different directions by the lane separator invade the center line. It can prevent safety accidents caused by reverse driving.

On the other hand, in the case of a driver who drives a vehicle, it is easier to recognize the signal as the traffic light installed at the intersection is installed at a relatively long distance, whereas the traffic light installed at the crosswalk is installed at a relatively short distance, so that the signal may not be recognized. Can be.

For example, if a vehicle is stopped right in front of a crosswalk, it may not be easy to recognize changes in the signal because the traffic light is placed on the upper side of the vehicle, which violates the signal or interferes with the smooth vehicle flow. Cases are occurring.

In addition, even in the case of a pedestrian who wants to cross a crosswalk, there is a problem that a safety accident occurs when crossing the crosswalk at the time of the driving signal due to reasons such as not properly recognizing the crossing signal or causing an error.

An object of the present invention is to provide an apparatus and method capable of reducing human injury and property damage due to traffic accidents by notifying the contents of the traffic signal in a location and method that are easy for both drivers and pedestrians to recognize when a traffic signal is changed. In addition, it is intended to provide a traffic signal information display device capable of accurately transmitting the contents of a signal and delivering additional information such as advertisements to drivers or pedestrians waiting for the signal.

According to an embodiment of the present invention, there is provided a signal input unit for receiving a traffic light control signal notifying a change of a traffic signal; A control unit for generating traffic signal information indicating contents of a current traffic signal according to the traffic light control signal; A display unit that displays the generated traffic signal information; The display unit includes a rotation support unit that adjusts one or more of a direction, an angle, and a height facing the display unit, wherein, when the current traffic signal is a driving signal, the display unit faces the pedestrian to cross the pedestrian crossing. The display unit adjusts the angle of the display unit in a direction to block entry, and when the current traffic signal is a walking signal, the display unit faces the driver and blocks the vehicle of the driver from entering the crosswalk. There is provided a traffic signal information display device characterized in that the angle is adjusted.

According to another embodiment of the present invention, receiving a traffic light control signal informing of a change of the traffic signal; Generating traffic signal information indicating contents of a current traffic signal according to the traffic light control signal; Adjusting at least one of a direction, an angle, and a height of a display unit in which the traffic signal information is to be displayed in response to the traffic signal information; And displaying the generated traffic signal information; wherein, when the current traffic signal is a driving signal, the display unit faces the pedestrian and adjusts the angle in a direction to block the pedestrian's entry into the crosswalk. When the current traffic signal is a walking signal, the display unit provides a traffic signal information display method, characterized in that the angle is adjusted in a direction that blocks the driver's vehicle from entering the crosswalk facing the driver. .

The disclosed technology can have the following effects. However, since it does not mean that a specific embodiment should include all of the following effects or only the following effects, it should not be understood that the scope of the rights of the disclosed technology is limited thereby.

According to an embodiment of the present invention, it is possible to reduce the occurrence of traffic accidents by inducing a driver to pay more attention not to invade a stop line at a crosswalk or an intersection. In addition, when the traffic signal information display device according to an embodiment of the present invention is actually applied, it is possible to prevent pedestrians from entering the crosswalk among the driving signals due to individual errors or mistakes in a more intuitive and physical way. , It can reduce the damage to people caused by traffic accidents at the crosswalk.

1 is a view showing a traffic signal information display system according to an embodiment of the present invention.
2 is a block diagram showing a traffic signal information display device according to an embodiment of the present invention.
3 is a flowchart showing a method of displaying traffic signal information according to an embodiment of the present invention.
4 is a view showing an example in which a traffic signal information display device according to an embodiment of the present invention operates.
5 is a view showing another example of operating a traffic signal information display device according to an embodiment of the present invention.
6 is a diagram illustrating a method of adjusting an angle of a traffic signal information display device according to an embodiment of the present invention.

Since the description of the present invention is merely an embodiment for structural or functional description, the scope of the present invention should not be construed as being limited by the embodiments described in the text. That is, since the embodiments can be variously changed and have various forms, the scope of the present invention should be understood to include equivalents capable of realizing the technical idea. In addition, since the object or effect presented in the present invention does not mean that a specific embodiment should include all of them or only those effects, the scope of the present invention should not be understood as being limited thereto.

Meanwhile, the meaning of terms described in the present application should be understood as follows.

Terms such as "first" and "second" are used to distinguish one component from other components, and the scope of rights is not limited by these terms. For example, a first component may be referred to as a second component, and similarly, a second component may be referred to as a first component.

When a component is referred to as being "connected" to another component, it should be understood that although it may be directly connected to the other component, another component may exist in the middle. On the other hand, when it is mentioned that a certain component is "directly connected" to another component, it should be understood that no other component exists in the middle. On the other hand, other expressions describing the relationship between the constituent elements, that is, "between" and "just between" or "neighboring to" and "directly neighboring to" should be interpreted as well.

Singular expressions are to be understood as including plural expressions unless the context clearly indicates otherwise, and terms such as “comprise” or “have” refer to implemented features, numbers, steps, actions, components, parts, or It is to be understood that it is intended to designate that a combination exists and does not preclude the presence or addition of one or more other features or numbers, steps, actions, components, parts, or combinations thereof.

In each step, the identification code (for example, a, b, c, etc.) is used for convenience of explanation, and the identification code does not describe the order of each step, and each step has a specific sequence clearly in context. Unless otherwise stated, it may occur differently from the stated order. That is, each of the steps may occur in the same order as specified, may be performed substantially simultaneously, or may be performed in the reverse order.

The present invention can be embodied as computer-readable codes on a computer-readable recording medium, and the computer-readable recording medium includes all types of recording devices storing data that can be read by a computer system. . Examples of computer-readable recording media include ROM, RAM, CD-ROM, magnetic tape, floppy disk, and optical data storage devices. Further, the computer-readable recording medium is distributed over a computer system connected by a network, so that the computer-readable code can be stored and executed in a distributed manner.

All terms used herein have the same meaning as commonly understood by one of ordinary skill in the field to which the present invention belongs, unless otherwise defined. Terms defined in commonly used dictionaries should be construed as having meanings in the context of related technologies, and cannot be construed as having an ideal or excessive formal meaning unless explicitly defined in the present application.

1 is a diagram showing a traffic signal information display system according to an embodiment of the present invention.

The traffic signal information display system 100 according to an embodiment of the present invention includes a traffic light 120 connected to the traffic signal information display device 110 through a network. Here, the traffic light 120 may include a traffic light 120a for pedestrians and a traffic light 120b for a driver of a vehicle.

As described above, the traffic signal information display device 110 is connected to one or more traffic lights 120 through a network. In addition, the traffic signal information display device 110 and one or more traffic lights 120 may switch or maintain a traffic signal by a consistent control signal (a traffic light control signal).

Therefore, when the pedestrian traffic light 120a turns on the walking signal, the vehicle traffic light 120b turns on the stop signal, and the traffic signal information display device 110 adjusts the angle in a direction that prevents the vehicle from proceeding, and the walking signal is turned on. Can be displayed. Conversely, when the driving signal is turned on on the vehicle traffic light 120b, the pedestrian traffic light 120a turns on a pedestrian prohibition signal, and the traffic signal information display device 110 adjusts the angle in a direction that blocks pedestrians from entering the crosswalk. It can indicate that the driving signals of vehicles are turned on.

The traffic light 120 may be connected to a separate server (not shown) that controls signal change of the traffic light by wire or wireless. In this case, the traffic signal information display device 110 according to an embodiment of the present invention is connected to a separate server (not shown) for the traffic light 120 through a network, and changes or maintains the traffic signal of the traffic light 120 A traffic light control signal may be received together with the traffic light 120.

When the traffic signal information display device 110 is connected through a network or cannot be accessed to a separate server (not shown) that controls the traffic light 120, the traffic signal information display device 110 receives a traffic light control signal from the server. It is not possible to receive and control the operation of the traffic signal information display device 110 according to the traffic light control signal.

In this case, the traffic signal information display device 110 may detect the current traffic signal of the traffic light 120 through a sensor, and accordingly, the operation of the traffic signal information display device 110 may be controlled. In this case, the sensor may be a sensor capable of detecting at least the type of the traffic light 120 and the color being emitted. This will be described in more detail in the description of the sensing unit 220 in FIG. 2 in the embodiment described later with reference to FIG. 2.

2 is a block diagram illustrating an apparatus for displaying traffic signal information according to an embodiment of the present invention.

Referring to FIG. 2, the traffic signal information display device 110 includes a signal input unit 210, a sensing unit 220, a control unit 230, a memory unit 240, a rotation support unit 250, and a display unit 260. Can include. Not all embodiments of the present invention are required to necessarily include all of the above-described components, and may selectively include all or only some of the above-described components according to embodiments.

The signal input unit 210 receives a traffic light control signal indicating a change of the traffic signal. The signal input unit 210 may receive a traffic light control signal from a server or traffic light 120 connected to the traffic light 120. In addition, when the traffic signal information display device 110 displays information other than traffic signal information, the signal input unit 210 may receive or receive the corresponding information.

For example, when the traffic signal information display device 110 displays an advertisement image, after receiving and storing an advertisement requested image from the advertiser's server in advance in a server for controlling the traffic signal information display device 110, control the traffic light. It is also possible to receive signals and video signals for advertisements and the like. Alternatively, according to another embodiment, the signal input unit 210 may be directly connected to the advertiser's server and receive an advertisement image from the advertiser's server.

It goes without saying that the signal received by the signal input unit 210 is not limited to a traffic light control signal and an image signal for an advertisement image. For example, additional information that can be displayed by the traffic signal information display device 110 in addition to the traffic signal information includes weather information, air quality information due to fine dust or various air pollutants, information on accident occurrence, real-time major news in addition to advertisement information. , There may be various information such as information on road conditions or traffic conditions such as congestion, congestion, and blocking of a specific road, and weather forecast information.

In particular, in the case of information that continuously changes in real time, for example, information on road conditions, accident occurrence, and air quality pollution level is not passed through a dedicated server of the traffic signal information display device 110, but an external server that provides the information The signal input unit 210 may be connected to a network to directly receive a signal or data for additional information to be displayed from a corresponding external server.

Of course, if there is a large amount of data or there is no significant change in the content of the information, the traffic signal information display device 110 receives and stores data, video signals, text signals, etc. for images to be displayed in advance in the dedicated server, and then the signal input unit 210 may receive data or signals for additional information together with a traffic light control signal from a dedicated server for the traffic signal information display device 110.

There is no limit to the number of servers to which the signal input unit 210 is connected, or to the content, format, or capacity of data received through such a server. In addition, there is no restriction on the type of network to which the signal input unit 210 is connected to the corresponding servers, and whether to be connected directly to an external server or to an external server through a dedicated server for the traffic signal information display device 110 is also not limited.

When the traffic light control signal is not received from the outside, the sensing unit 220 may directly sense a traffic signal displayed by a current traffic light and transmit the contents of the current traffic signal to the control unit 230. Accordingly, the sensing unit 220 may detect the type of the traffic light and the color currently being emitted.

In addition, the sensing unit 220 may detect one or more of distances and directions to one or more pedestrians or vehicles waiting for a signal. For example, when the traffic signal information display device 110 is assumed to be the origin (0, 0) in coordinates, each position of a vehicle or pedestrians waiting for a signal in a nearby place may be converted into coordinate information to be detected.

In this case, the sensing unit 220 may detect the vehicle as a risk factor when a vehicle moves, approaches a traffic signal information display device or a pedestrian, particularly when the speed of the movement is faster than a preset speed. In addition, by transmitting this to the control unit 230 or the like, a warning signal for danger may be generated. The same is true when the movement of a pedestrian entering or approaching the roadway is detected during the driving signal. Even in this case, the sensing unit 220 may detect and identify the movement of a pedestrian as a risk factor based on its direction and speed.

The warning signal generated by the controller 230 according to the detection of a risk factor by the sensing unit 220 may be in the form of an image or a text, or may be in the form of a sound. Accordingly, the traffic signal information display device 110 may further include an alarm unit (not shown) that outputs a warning signal.

In addition, when such a risk factor is detected by the sensing unit 220, the controller 230 may change the attitude of the traffic signal information display device 110, apart from outputting a warning signal to warn it. That is, when the sensing unit 220 detects that a pedestrian approaches a roadway among a driving signal or a vehicle approaches a pedestrian crossing or a traffic signal information display device 110 or a pedestrian among the walking signals, the corresponding risk factor, that is, the approach Or the location where the movement occurred can be detected.

In addition, the sensing unit 220 may transmit location information where such a risk factor occurs to the control unit 230. Then, the control unit 230 may adjust or change one or more of the height or angle of the display unit 260 according to a location where a risk factor such as a corresponding approach occurs. To this end, the control unit 230 may generate a posture change signal and transmit it to the rotation support unit 250. The posture change signal includes information on how to increase or decrease the height of the display unit 260 and how many degrees to adjust the direction in which the display unit 260 faces. The rotation support unit 250 may change the height or angle of the display unit 260 by adjusting the height according to the posture change signal and rotating a predetermined amount.

For example, when there is a concern that the height of a pedestrian is too large, too small, or too far to see traffic signal information, the sensing unit 220, the control unit 230, and the revolving support unit 250 are configured according to the display unit 260. You can adjust the height or angle.

In addition, since the sensing unit 220 can measure the distance of surrounding objects, it is possible to detect the longest distance to the farthest pedestrian or vehicle among pedestrians or vehicles waiting for a signal. When it is difficult to extend the rotation support unit 250 to a pedestrian or vehicle in the distance, the traffic signal information display device 110 adjusts the angle of the display unit 260 to make it easier for a driver or a pedestrian in the distance to obtain traffic signal information. You can make it checkable. Accordingly, the controller 230 may increase or decrease the angle of the display unit according to the longest distance to a pedestrian or vehicle.

According to another embodiment, the sensing unit 220 may detect the gender, age, etc. of a pedestrian or driver waiting for a signal, and based on the gender or age of a pedestrian or driver identified by the sensing unit 220 , The controller 230 may select which image to display together with traffic signal information, and display the selected image as an additional image through the display unit 260.

The control unit 230 may generate traffic signal information indicating the contents of the current traffic signal according to the traffic light control signal. That is, information about whether it is a current driving signal, a walking signal, and how much time remains of the corresponding signal may be generated as traffic signal information. That is, the traffic signal information may include one or more of the type and remaining time of the current traffic signal, precautions according to the current traffic signal, and behavior guidelines of pedestrians and drivers.

For example, when a green light is on for a pedestrian traffic light, the control unit 230 may generate textual information such as “walking signal, pedestrian walking, remaining time 19 seconds, vehicle stop” as traffic signal information. In addition, if the remaining time remains less than a predetermined value even during the current walking signal, the control unit 230 may generate traffic signal information as “5 seconds for the remaining time of the walking signal, no entry to the crosswalk”.

In addition, the controller 230 may display traffic signal information and an additional image on the display unit 260 according to a preset setting. For example, the control unit 230 displays the advertisement image of Company A together with traffic signal information from 3 pm to 6 pm, and displays the advertisement image of company B from 6 pm to 10 pm, as set in advance. Can be marked with.

The memory unit 240 is implemented as a nonvolatile memory such as a solid state disk (SSD) or a hard disk drive (HDD), and includes an auxiliary storage device used to store all data required for the traffic signal information providing device 110. In addition, a main memory device implemented as a volatile memory such as random access memory (RAM) may be included. As such, the memory unit 240 may be implemented as volatile and nonvolatile memory, and if implemented as a nonvolatile memory, it may be implemented to be connected through a hyperlink.

In the memory unit 240, when a traffic light control signal is input, contents of information to be output for each signal may be stored in the form of text, still images, moving pictures, and sounds. As described above, additional information displayed together with traffic signal information, particularly an image signal, may be temporarily stored in the memory unit 240 before being displayed through the display unit 260.

The rotation support unit 250 is fixed to the ground, is connected to the display unit 260, and is implemented in a form capable of rotation. And it is also possible to partially adjust the height within a certain range.

The rotation support 250 may adjust one or more of a direction, an angle, and a height in which the display unit 260 faces. Here, the rotation support unit 250 may adjust the direction in which the display unit 260 and the like face each other by rotating at the position while the display unit 260 is fixed and attached.

When the current traffic signal is a driving signal, the rotation support unit 250 may change and adjust the angle of the display unit in a direction in which the display unit 260 faces the pedestrian and blocks pedestrians from entering the crosswalk. And when the current traffic signal is a walking signal, the rotation support unit 250 adjusts the angle of the display unit 260 in a direction in which the display unit 260 faces the driver and blocks the driver's vehicle from entering the crosswalk or intersection. Can be adjusted.

The display unit 260 may display traffic signal information generated by the controller 230. The display unit 260 may be divided into one or more areas and managed. For example, it may be preset to display traffic signal information through the first area, output an advertisement image through the second area, and always display air quality information through the third area.

While the traffic signal continues, the display unit 260 provides information other than traffic signal information, that is, road conditions, traffic information, traffic accident information, and specific road information through a designated area (for example, a second area) in the display unit 260. Additional information including one or more of information on congestion, congestion, blocking, etc., air quality information around roads, weather forecasts, and advertisement images may be further output.

3 is a flowchart illustrating a method of displaying traffic signal information according to an embodiment of the present invention.

The traffic signal information display device 110 may receive a traffic light control signal indicating a change of a traffic signal displayed by the traffic light 120 (S310). The traffic light control signal may be received from a server that controls the traffic light 120 or a dedicated server for the traffic signal information display device 110. The traffic signal information display device 110 is based on the traffic light control signal. Traffic signal information indicating the content of may be generated (S320). Also, the additional image may be displayed through a designated area of the display unit 260 by using data for the additional image. When the traffic signal information display device 110 receives a traffic light control signal, the traffic signal information to be displayed is generated and displayed according to whether the traffic signal to be displayed is a walking signal or a driving signal, and the remaining time that the corresponding signal will continue in the future. You can decide whether to do it.

If the current traffic signal is a walking signal, traffic signal information that requires a driver to stop and pay attention may be generated, and if the current traffic signal is a driving signal, traffic signal information that requires a pedestrian to stop approaching and pay attention may be generated. Traffic signal information may include one or more of text, still image, video, and sound.

In addition to the traffic light control signal, when the traffic signal information display device 110 displays additional information or displays an additional image while waiting for a signal, the additional image or data corresponding to the additional information may be received from one or more servers. . Signals or data for outputting additional images may be received from a server controlling the traffic light 120, a dedicated server for the traffic signal information display device 110, or an external server providing corresponding additional information.

In addition, the traffic signal information display device 110 may adjust one or more of a direction, an angle, and a height of the display unit 260 in which the traffic signal information is to be displayed in response to the traffic signal information (S340). That is, when the current traffic signal is a walking signal, the attention and protection of the drivers are required, and thus the display unit 260 may rotate and adjust the angle by the rotation support 250 in a direction that is easy to be seen by the drivers.

Here, when the current traffic signal is a driving signal, the display unit 260 faces the pedestrian and the angle may be adjusted by the rotation support unit 250 in a direction that blocks the pedestrian's entry into the crosswalk. In addition, when the current traffic signal is a walking signal, the display unit 260 may adjust the angle by the rotation support unit 250 in a direction that blocks the driver's vehicle from entering the crosswalk facing the driver.

In addition, the traffic signal information display device 110 may output or display the generated traffic signal information (S340). If the traffic signal information is in the form of text or video, it is displayed through the display unit 260, and if it is in the form of voice, sound, or video, it may be output through a speaker (not shown) or an alarm unit (not shown).

As described above, the rotation support unit 250 may adjust the angle and position of the display unit 260 in a direction facing a driver or a pedestrian according to a change in a signal. However, in addition to the factor of signal change, when the distance to the farthest vehicle is far or close, the angle of the display unit 260 may be adjusted again in more detail in consideration of the driver's field of view.

For example, during the walking signal, the display unit 260 is generally positioned in a direction perpendicular to the traveling direction of the vehicle and in a direction facing the driver. However, the distant driver does not see what content is being displayed on the display unit 260. Therefore, depending on the distance to the farthest vehicle or the driver, the controller 230 may rotate the display unit 260 by a certain angle in consideration of the driver's viewing angle, and the adjusted angle is the controller 260 to the sensing unit 220 It can be calculated using distance information sensed by. The rotation support unit 250 may rotate the display unit 250 by a certain angle in a visible direction by the angle calculated by the control unit 230. Contents of adjusting the angle of the display unit 260 in consideration of the distance to the driver or pedestrian will be described in more detail later with reference to FIG. 6.

4 is a diagram showing an example in which a traffic signal information display device according to an embodiment of the present invention operates.

With reference to FIG. 4, the operation of the traffic signal information display apparatus according to an embodiment of the present invention will be described during a walking signal. Figure 4 (a) shows the state of the crosswalk with the pedestrian signal turned on. That is, a green light is on for pedestrian traffic lights and a red light is on for vehicle traffic lights.

While a pedestrian crosses the pedestrian crossing, the traffic signal information display device 110 rotates in a direction that blocks the progress of the vehicle, and the display unit 260 of the traffic signal information display device 110 is arranged in a direction opposite to the driver. do.

In addition, traffic signal information is displayed on the display unit 260 of the traffic signal information display device 110. As described above, the traffic signal information may include information on the content of a signal indicated by a current traffic light, a caution of a pedestrian or driver according to the signal, and a remaining time for the signal to be maintained in the future. For example, as shown in (b) of FIG. 4, traffic signal information may be displayed on the display unit 260 in the form of'in a pedestrian signal','vehicle stop', and '19 seconds remaining'.

In addition, the display unit 260 may further display traffic signal information as well as additional information or an image through the designated area 265 in the display unit 260. As illustrated in FIG. 4B, the display unit 260 may reproduce an advertisement image for drivers through the designated area 265 while the driver's signal waiting state according to the walking signal continues.

5 is a diagram illustrating another example in which a traffic signal information display device operates according to another embodiment of the present invention.

With reference to FIG. 5, the operation of the traffic signal information display apparatus according to an embodiment of the present invention will be described during a driving signal. Figure 5 (a) shows the state of the crosswalk with the driving signal turned on. That is, a red light is on for a pedestrian traffic light and a green light is on for a vehicle traffic light.

While the vehicle passes through the crosswalk, the traffic signal information display device 110 rotates in a direction that blocks pedestrians from walking on the crosswalk, and the display unit 260 of the traffic signal information display device 110 crosses It is placed in the direction opposite to the pedestrians waiting to walk on the sidewalk.

In addition, traffic signal information is displayed on the display unit 260 of the traffic signal information display device 110. As described above, the traffic signal information may include information on the content of a signal indicated by a current traffic light, a caution of a pedestrian or driver according to the signal, and a remaining time for the signal to be maintained in the future. For example, as shown in (b) of FIG. 5, traffic signal information may be displayed on the display unit 260 in the form of'during a driving signal','do not cross', and '1 minute and 30 seconds of remaining time'.

In addition, the display unit 260 may further display traffic signal information as well as additional information or an image through the designated area 265 in the display unit 260. As shown in (b) of FIG. 5, the display unit 260 may reproduce an advertisement image for pedestrians through the designated area 265 while the signal waiting state of pedestrians according to the driving signal continues. .

6 is a diagram illustrating a method of adjusting an angle of a traffic signal information display device according to an embodiment of the present invention.

As illustrated in FIG. 6, the traffic signal information display device 110 may rotate the display unit 260 at a predetermined angle around the rotation support unit 250. If the angle when the display unit 260 is at the position P during the driving signal is 0 degrees, the rotation support unit 250 may rotate the display unit 260 by 90 degrees during the walking signal. That is, in this case, θ = 90 degrees.

The rotation support 250 may change the position or posture of the display unit 260 while rotating in a clockwise or counterclockwise direction as shown in FIG. 6. In addition, the inner pillar of the rotation support unit 250 moves up and down, so that the height of the display unit 260 may be adjusted within a certain range.

In particular, when a vehicle or pedestrian is distributed far away from the traffic signal information display device 110 due to a wide road width or a wide crosswalk, the traffic signal information display device 110 may determine the height or angle of the display unit 260. By adjusting the lights, traffic signal information can be easily recognized by as many people as possible.

For example, when the current traffic signal is a walking signal, the longest distance from the current rotation support unit 250 to the vehicle O at the farthest distance is d, and the vertical distance from the end of the display unit 260 to the vehicle is m, The sensing unit 220 senses the distance between d and m, and an appropriate angle θ'or θ of the display unit 260 may be calculated. An equation for calculating the angle θ'in the vertical direction of the display unit 260 using two or more of d, m, and the horizontal width l of the display unit 260 may be expressed as follows.

[Equation 1]

cos θ'=

In particular, when an object such as a vehicle is far enough away and the distance is greater than or equal to a predetermined value, θ'and θ gradually converge to closer values. Therefore, when d or m is, for example, 10 meters or more, it can be estimated as θ'≒ θ. However, here, θ may be limited to a value less than or equal to a certain value. For example, it may be limited to θ<30°.

Alternatively, the traffic signal information display device 110 may control the posture of the display unit 260 by determining a value of θ according to a value set for each section, not an equation. For example, when d or m is less than 5 meters in a walking signal, θ is 90°, when d or m is 5 meters or more and less than 10 meters, θ is 80°, and when d or m is 10 meters or more and less than 15 meters, θ is 70°, d Alternatively, when m is 15 meters or more, θ may be preset to 60°.

Although described above with reference to the preferred embodiments of the present application, those skilled in the art will variously modify the present application within the scope not departing from the spirit and scope of the present invention described in the following claims. And it will be appreciated that it can be changed.

100: traffic signal information display system
110: traffic signal information display device
210: signal input unit 220: sensing unit
230: control unit 240: memory unit
250: rotation support 260: display

Claims (8)

A signal input unit for receiving a traffic light control signal and an image signal indicating a change of the traffic signal;
A control unit for generating traffic signal information indicating contents of a current traffic signal according to the traffic light control signal;
A display unit that displays an image according to the image signal together with the generated traffic signal information;
A sensing unit that detects at least one of distances and directions to at least one pedestrian or vehicle waiting for a signal; And
Including a rotation support unit for adjusting at least one of a direction, an angle, and a height facing the display unit,
Here, the sensing unit detects a distance from the vehicle waiting for a signal to the vehicle at the farthest distance from the display unit,
When the traffic signal is a walking signal, and when it is detected that the distance to the vehicle waiting for the signal at the farthest distance from the display unit is more than a certain value, the control unit displays on the front of the display unit even in the vehicle at the farthest distance. The display unit calculates an angle value of the display unit in a direction partially facing the vehicle at the farthest distance so that the image can be seen,
When the current traffic signal is a driving signal, the rotation support unit adjusts the angle of the display unit in a direction in which the display unit faces the pedestrian and blocks the pedestrian from entering the pedestrian crossing, and the current traffic signal is a walking signal. In response to the angle value calculated by the control unit, the display unit faces the driver and blocks the vehicle of the driver from entering the crosswalk, and at the same time, the image displayed on the display unit is displayed by the driver's field of view. Traffic signal information display device, characterized in that adjusting the angle of the display unit in a direction provided within. The method of claim 1,
Wherein the traffic signal information includes at least one of a type and a remaining time of the current traffic signal and precautions according to the current traffic signal. The method of claim 1,
And an alarm unit for outputting a warning signal when the approach of the vehicle is detected among the walking signals or the approach of the pedestrian is detected among the driving signals. The method of claim 1,
When the approach of the vehicle is detected among the walking signals or the approach of the pedestrian is detected among the driving signals, the rotation support unit changes at least one of a height and an angle of the display unit corresponding to a position where the approach occurs. Traffic signal information display device. delete The method of claim 1,
The display unit displays an image according to the video signal through a designated area in the display unit while the traffic signal is sustained,
Wherein the image includes at least one of road conditions, traffic information, air quality information around roads, weather forecasts, and advertisement images. The method of claim 6,
The signal input unit may be connected to one or more servers,
Traffic signal information display device, characterized in that receiving each of the traffic light control signal and the video signal for the advertisement image from at least one server. Receiving a traffic light control signal and an image signal indicating a change of the traffic signal;
Generating traffic signal information indicating contents of a current traffic signal according to the traffic light control signal;
Detecting at least one of distances and directions to at least one pedestrian or vehicle waiting for a signal; And
Adjusting one or more of a direction, an angle, and a height facing the display unit on which the traffic signal information is to be displayed; And
Including the step of displaying an image according to the video signal together with the generated traffic signal information,
Here, in the step of detecting at least one of a distance and a direction to the pedestrian or the vehicle, a distance to the vehicle at the farthest distance from the display unit among the vehicles waiting for a signal is detected,
Adjusting one or more of a direction, an angle, and a height facing the display unit,
When the current traffic signal is a walking signal, when it is detected that the distance to the vehicle waiting for the signal at the farthest distance from the display unit is more than a predetermined value, the vehicle at the farthest distance is also displayed on the front of the display unit. The display unit faces the driver and the vehicle of the driver enters the crosswalk according to the angle value of the display unit, which is calculated in a direction partially facing the vehicle at the farthest distance so that an image can be seen. At the same time, the angle of the display unit is adjusted in a direction in which the image displayed on the display unit is provided within the view of the driver,
When the current traffic signal is a driving signal, the display unit adjusts an angle of the display unit in a direction in which the display unit faces the pedestrian and blocks the pedestrian from entering a crosswalk.

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