Pedestrian signal remaining time guidance device for color vision impaired individuals

Abstract

The present invention relates to a pedestrian signal remaining time guidance device for people with color vision deficiencies. Specifically, the pedestrian signal remaining time guidance device for people with color vision deficiencies comprises: a housing having a coupling means that is detachably coupled to a pedestrian signal light; a control unit electrically connected to the pedestrian signal light and a remaining time indicator installed on the pedestrian signal light, which detects the red / green pedestrian light illumination status of the pedestrian signal light and the remaining time information output to the remaining time indicator, generates pedestrian signal information such as a pedestrian-allowed signal or a pedestrian-prohibited signal, and controls the pedestrian signal information to be converted into characters or symbols and output; and a display unit mounted within the housing and outputting the pedestrian signal information in the form of characters or symbols according to the control of the control unit.

Description

Technology Field

[0001] The present invention relates to a pedestrian signal remaining time guidance device for people with color vision deficiencies. Specifically, the invention relates to a pedestrian signal remaining time guidance device for people with color vision deficiencies that converts pedestrian signal information into the form of characters or symbols and outputs it so that people with red-green color vision deficiencies can clearly recognize the signal information, thereby enabling them to intuitively determine whether walking is possible or prohibited, as pedestrian signal information output from a pedestrian signal light and a remaining time indicator installed on the pedestrian signal light is output in green and red. Background Technology

[0002] Generally, pedestrian traffic lights are installed at crosswalks to facilitate smooth traffic flow by automatically controlling whether pedestrians are crossing via signals. These pedestrian traffic lights consist of red and green lights arranged vertically to emit red and green light outwards.

[0003] Meanwhile, pedestrian traffic lights provide a function that flashes the green light at regular intervals when there is little time left for pedestrians to cross; however, since this flashing function alone makes it difficult for pedestrians to accurately predict when the green signal will end, some pedestrian traffic lights are equipped with and operated with a remaining time indicator to show the remaining crossing time.

[0004] However, individuals with red-green color vision deficiencies (color blindness and color vision deficiency) face the problem of difficulty in accurately perceiving this signaling system. Since the information displayed on pedestrian traffic lights and countdown timers is distinguished solely by color (green and red), individuals with color vision deficiencies find it difficult to intuitively understand whether walking is possible, leading to inconvenience in recognizing pedestrian signals.

[0005] As a prior art for solving the problem described above, Korean Registered Patent No. 10-2126151 discloses a traffic light information notification system utilizing signal API information, which enables safe walking or driving by receiving pedestrian request information from a visually impaired person or driver request information from a user terminal that has received pedestrian request information or driver request information from a person with color vision deficiency or color blindness, receiving GPS information from the user terminal, and transmitting traffic light information to the user terminal using signal API information.

[0006] However, the aforementioned prior art provides signal information to pedestrians via an external terminal without changing the color information of the pedestrian signal itself, making it difficult for individuals with color vision deficiencies to intuitively recognize pedestrian signals in real time. Additionally, because it requires an external terminal, there is a limitation in that signal information cannot be checked if the user is not carrying the terminal. The problem to be solved

[0007] Accordingly, the purpose of the present invention is to provide a pedestrian signal remaining time guidance device for people with color vision deficiencies, which enables intuitive determination of pedestrian-allowed and pedestrian-prohibited states by converting and outputting pedestrian signal information in the form of characters or symbols so that people with red-green color vision deficiencies can clearly recognize the corresponding signal information, as pedestrian signal information output from a pedestrian signal light and a remaining time indicator installed on the pedestrian signal light is output in green and red. means of solving the problem

[0008] To achieve the above-mentioned objective, a pedestrian signal remaining time guidance device for a person with color vision deficiency according to one embodiment of the present invention comprises: a housing having a coupling means that is detachably coupled to a pedestrian signal light; a control unit electrically connected to the pedestrian signal light and a remaining time indicator installed on the pedestrian signal light, which detects the red / green pedestrian light illumination status of the pedestrian signal light and the remaining time information output to the remaining time indicator, generates pedestrian signal information of either a pedestrian-allowed signal or a pedestrian-prohibited signal, and controls the pedestrian signal information to be converted into characters or symbols and output; and a display unit mounted within the housing and outputting the pedestrian signal information in the form of characters or symbols according to the control of the control unit.

[0009] The above coupling means is preferably composed of a clip-type bracket formed in a U-shape in one area of ​​the upper or lower surface of the housing, and the housing is fixed by the clip-type bracket being fitted onto a plate connecting the pedestrian signal light and the support post.

[0010] It is preferable that the control unit generates a pedestrian permission signal when the green pedestrian light is illuminated at the pedestrian traffic light or when the remaining time in green is displayed on the remaining time indicator, and generates a pedestrian prohibition signal when the red pedestrian light is illuminated at the pedestrian traffic light or when the remaining time in red is displayed on the remaining time indicator.

[0011] It is preferable that the control unit controls the display unit to output an 'O'-shaped symbol or the character 'green' in response to the walking allow signal, and controls the display unit to output an 'X'-shaped symbol or the character 'red' in response to the walking prohibition signal.

[0012] The above display unit is preferably composed of a dot matrix in which a plurality of LEDs are arranged in a grid shape.

[0013] It is preferable that the control unit generates a signal indicating imminent pedestrian access when the green pedestrian light in the pedestrian signal light flashes or when the green remaining time value displayed on the remaining time indicator is 10 seconds or less.

[0014] The above control unit controls the display unit to output an 'O'-shaped symbol or the character 'green' in response to the signal indicating imminent walking capability, and it is preferable to control the symbol or character output to the display unit to blink.

[0015] It is preferable that the control unit detects the lighting status of the red / green pedestrian lights of the pedestrian signal in real time and compares the generated first signal data with the second signal data received from the option board installed in the traffic signal controller, and if the first signal data and the second signal data are inconsistent, controls the display unit to turn off the light or output a warning signal to the display unit. Effects of the invention

[0016] According to one embodiment of the present invention, pedestrian signal information output from a pedestrian traffic light and a remaining time indicator installed on the pedestrian traffic light is converted into a character or symbol form and output, thereby enabling a person with color vision deficiency to intuitively determine whether walking is possible, such as whether walking is possible or prohibited, which has the effect of improving pedestrian safety.

[0017] In addition, according to one embodiment of the present invention, the pedestrian signal remaining time guidance device of the present invention is equipped with a coupling means that is detachable from the pedestrian signal light, thereby enabling easy installation and maintenance on the pedestrian signal light through the coupling means without modifying the existing pedestrian signal light, thus increasing economic efficiency.

[0018] In addition, according to one embodiment of the present invention, when the green pedestrian light flashes on a pedestrian traffic light or the remaining time value of the green displayed on the remaining time indicator is 10 seconds or less, a signal indicating imminent pedestrian crossing is generated, and a corresponding 'O'-shaped symbol or the word 'green' is displayed in a flashing form so that pedestrians can recognize the signal change in advance, thereby having the effect of inducing safe crossing of pedestrians. Brief explanation of the drawing

[0019] FIG. 1 is a configuration diagram of a walking signal remaining time guidance device for a person with color vision deficiency according to one embodiment of the present invention. FIGS. 2 and 3 are examples of schematic shapes of a walking signal remaining time guidance device for a person with color vision deficiency according to an embodiment of the present invention. FIGS. 4 and 5 are examples in which characters or symbols corresponding to pedestrian signal information output to a pedestrian signal light and a remaining time indicator are output from a display unit according to an embodiment of the present invention. Specific details for implementing the invention

[0020] Hereinafter, various embodiments and / or aspects are disclosed with reference to the drawings. For illustrative purposes, numerous specific details are disclosed in the following description to aid in a general understanding of one or more aspects. However, it will also be recognized by those skilled in the art that these aspects may be practiced without such specific details. The following description and the accompanying drawings describe specific exemplary aspects of one or more aspects in detail. However, these aspects are exemplary, and some of the various methods in the principles of the various aspects may be used, and the description is intended to include all such aspects and their equivalents.

[0021] As used herein, terms such as "examples," "examples," "aspects," "examples," etc., may not be interpreted as implying that any aspect or design described is better or more advantageous than other aspects or designs.

[0022] Additionally, the terms “comprising” and / or “comprising” should be understood to mean that the relevant feature and / or component is present, but not to exclude the presence or addition of one or more other features, components and / or groups thereof.

[0023] Additionally, terms including ordinal numbers, such as first, second, etc., may be used to describe various components, but said components are not limited by said terms. Such terms are used solely for the purpose of distinguishing one component from another. For example, without departing from the scope of the present invention, the first component may be named the second component, and similarly, the second component may be named the first component. The term "and / or" includes a combination of a plurality of related described items or any of a plurality of related described items.

[0024] Furthermore, in the embodiments of the present invention, all terms used herein, including technical or scientific terms, unless otherwise defined, have the same meaning as generally understood by those skilled in the art to which the present invention pertains. Terms such as those defined in commonly used dictionaries should be interpreted as having a meaning consistent with their meaning in the context of the relevant technology, and should not be interpreted in an ideal or overly formal sense unless explicitly defined in the embodiments of the present invention.

[0025] The present invention relates to a pedestrian signal remaining time guidance device for persons with color vision deficiencies. Specifically, the invention aims to provide a pedestrian signal remaining time guidance device for persons with color vision deficiencies that allows for intuitive determination of pedestrian-allowed and pedestrian-prohibited states by converting pedestrian signal information into the form of characters or symbols and outputting it so that persons with red-green color vision deficiencies can clearly recognize the corresponding signal information, as pedestrian signal information output from a pedestrian signal light and a remaining time indicator installed on the pedestrian signal light is output in green and red.

[0026] In the following, a more detailed description of the present invention for achieving the aforementioned purpose will be provided with reference to the attached drawings, and multiple drawings may be simultaneously referenced to explain a single technical feature and a component constituting the invention.

[0027] To briefly describe the attached drawings, FIG. 1 shows a configuration diagram of a pedestrian signal remaining time guidance device for a person with color vision deficiency according to an embodiment of the present invention, and FIG. 2 and 3 show examples of schematic shapes of a pedestrian signal remaining time guidance device for a person with color vision deficiency according to an embodiment of the present invention. In addition, FIG. 4 and 5 show examples in which characters or symbols corresponding to pedestrian signal information output from a display unit according to an embodiment of the present invention are output to a pedestrian signal light and a remaining time indicator.

[0028] At this time, the pedestrian traffic light mentioned in the present invention can be understood as a traffic light generally installed at a crosswalk to control whether pedestrians can cross, and can be understood as being configured to visually guide whether walking is possible by emitting red and green light through a vertical arrangement of red and green lights.

[0029] In addition, the aforementioned remaining time indicator may be installed at the bottom or top of the pedestrian signal light and is understood as a display device that outputs the remaining time as a number so that pedestrians can intuitively check the remaining time of the pedestrian signal; it is configured to display the remaining time for pedestrians to cross when the green pedestrian signal is illuminated, and to output the waiting time until the next green signal is illuminated as a number when the red pedestrian signal is illuminated.

[0030] First, referring to FIGS. 1 to 3, the description of the present invention can be explained as follows: A walking signal remaining time guidance device (1000, hereinafter referred to as the 'device of the present invention') for a person with color vision deficiency according to one embodiment of the present invention may include, as a main component, a housing (100), a control unit (200), and a display unit (300).

[0031] The housing (100) described above constitutes the overall outer shape of the device (1000) of the present invention and may be equipped with a coupling means that enables attachment and detachment to a pedestrian signal light (10).

[0032] At this time, the aforementioned coupling means may be formed in an area of ​​the upper or lower surface of the housing (100), thereby allowing the housing (100) to be coupled to the upper or lower surface of the pedestrian signal light (10).

[0033] In addition, it is desirable that the aforementioned coupling means be formed with a structure that is easy to attach and detach, so that it can be easily removed and reinstalled during maintenance.

[0034] Meanwhile, as an embodiment of the present invention, the above-described coupling means may be composed of a clip-type bracket (110) formed in a U-shape in one area of ​​the upper or lower surface of the housing (100).

[0035] At this time, it can be understood that the housing (100) is fixed by fitting the aforementioned clip-type bracket (110) onto the plate (2) connecting the pedestrian signal light (10) and the support post (1).

[0036] To explain more specifically, the clip-type bracket (110) described above can be formed in a U-shape having an open end as shown in FIG. 3, and can be configured to be coupled by inserting the open end into the outer surface of a plate connecting the pedestrian signal light and the support post. Through this structure, the housing (100) described above can be firmly fixed to the upper or lower part of the pedestrian signal light, and at the same time can be positioned to be aligned with the central axis of the pedestrian signal light, so it is desirable to understand that it is stably positioned in line with the pedestrian signal light.

[0037] Meanwhile, the clip-type bracket (110) described above may be provided in multiple numbers as shown in FIGS. 4 and 5 and arranged at regular intervals along the longitudinal direction of the upper or lower surface of the housing (100). Accordingly, the housing (100) can be fixed more firmly to the plate (2), thereby providing the effect of improving fixation stability.

[0038] Meanwhile, when multiple clip-type brackets (110) are symmetrically fixed to both sides of the plate (120), the housing (100) can be aligned more precisely with the central axis of the pedestrian signal light (10), so that the housing (100) can be understood as being fixed in a structure integrated with the pedestrian signal light (10).

[0039] Additionally, a plurality of clip-type brackets (110) may be formed to be position-adjustable along the length direction of the upper or lower surface of the housing (100) so as to correspond to various shapes and sizes of the plate (2) connecting the pedestrian signal light (10) and the support post (1), but the present invention is not limited thereto.

[0040] Meanwhile, as another embodiment of the present invention, although not illustrated in the attached drawings, the clip-type bracket described above can be coupled to a pedestrian signal light in various ways.

[0041] For example, it may be possible to fix the housing to the pedestrian traffic light by fitting it into a portion of a frame formed to wrap around the outer surface of the pedestrian traffic light, or by fitting it into a shade installed at the top of the pedestrian traffic light to reduce light reflection, improve visibility, and prevent unnecessary malfunctions, but the present invention is not limited thereto.

[0042] In addition, as another embodiment of the present invention, in order to prevent the device of the present invention from shaking or separating due to external environmental factors such as wind, shock, or vibration, the clip-type bracket described above may include a member such as a silicone packing or a rubber pad inside, or may have a locking projection or protrusion protruding from the inner surface of the clip-type bracket to increase the frictional force of the contact surface in contact with the plate, thereby further improving the fastening force, but the present invention is not limited thereto.

[0043] In addition, as another embodiment of the present invention, the clip-type bracket described above is fitted onto a plate connecting a pedestrian signal light and a support post, and to secure additional fastening force, a fastening hole (not shown) capable of fastening a screw is formed in the open end of the clip-type bracket, and the clip-type bracket can be more firmly fixed to the plate by inserting a screw or other fastening means into the fastening hole.

[0044] This configuration can be understood as a structure that supplements the fastening force that may be insufficient with a simple snap-fit ​​method alone, and it can perform the function of ensuring that the housing remains stable without shaking even in external environments such as wind, shock, and vibration. In addition, the screw fastened to the fastening hole can be removed as needed to facilitate the easy attachment and detachment of the housing, thereby improving the convenience of the operator during maintenance.

[0045] Meanwhile, as another embodiment of the present invention, although not illustrated in the attached drawings, the aforementioned coupling means can fix the aforementioned housing to a pedestrian signal light using any one of the following coupling methods: a bolt fastening method using a bolt and nut, a magnetic coupling method using a magnet, an attachment method using an adsorption pad, or a method of coupling to a support post with a clamp.

[0046] As an example of one embodiment, when using a bolt fastening method as the aforementioned coupling means, a bolt fastening portion may be formed in one area of ​​the upper or lower surface of the housing, and the housing portion may be fixed by inserting a bolt into the bolt fastening portion formed in the housing to pass through a plate connecting the pedestrian signal light and the support post, and then fixing it using a nut on the opposite side of the plate. In addition, it may be possible to increase the fastening force and prevent loosening due to external vibration or impact by inserting a washer or a rubber pad between the housing and the plate.

[0047] As another embodiment, when a magnetic coupling method is used as the coupling means described above, it may be possible to fix the housing by attaching a magnetic member having strong magnetism, such as a neodymium magnet, to the upper or lower surface of the housing and attaching it to the metal part of a plate connecting the pedestrian signal light or the support post, and the present invention is not limited thereto.

[0048] As another embodiment, when using an attachment method utilizing an adsorption pad as the coupling means described above, it may be possible to fix the housing by attaching it to a flat surface at the top or bottom of the pedestrian signal light by providing a vacuum adsorption pad on the upper or lower surface of the housing, and the present invention is not limited thereto.

[0049] As another embodiment, when using a method of connecting to a support post with a clamp as the aforementioned connecting means, it may be possible to provide a clamp on the side or rear of the housing and to fix the housing by fastening the clamp to the support post where the pedestrian signal light is installed, and the present invention is not limited thereto.

[0050] These various coupling methods can be selectively applied depending on the installation environment and the structure of the pedestrian signal light. In particular, the screw coupling method allows for more secure fixation of the housing, the magnetic coupling method facilitates easy attachment and detachment, and the suction pad method enables rapid installation while minimizing damage to the attachment surface. Additionally, the clamp-based coupling method allows for stable mounting without altering the structure of the pedestrian signal light.

[0051] Returning to Fig. 1 to continue the explanation, the device (1000) of the present invention may include a control unit (200).

[0052] The above-described control unit (200) is electrically connected to the pedestrian signal light (10) and the remaining time indicator (20) installed on the pedestrian signal light (10), and detects the red / green pedestrian light illumination status of the pedestrian signal light (10) and the remaining time information output to the remaining time indicator (20), generates pedestrian signal information of either a pedestrian-allowed signal or a pedestrian-prohibited signal, and controls the pedestrian signal information to be converted into characters or symbols and output.

[0053] As an embodiment of the present invention, the above-described control unit (200) can generate a pedestrian permission signal when a green pedestrian light is illuminated in the pedestrian traffic light (10) or when a green remaining time is displayed on the remaining time indicator (20), and can generate a pedestrian prohibition signal when a red pedestrian light is illuminated in the pedestrian traffic light (10) or when a red remaining time is displayed on the remaining time indicator (20).

[0054] Accordingly, the above-described control unit (200) can control the display unit (300) to output an 'O'-shaped symbol or the character 'green' in response to a walking-enabled signal, and control the display unit (300) to output an 'X'-shaped symbol or the character 'red' in response to a walking-prohibited signal.

[0055] To explain more specifically, the aforementioned pedestrian signal is a concept of a signal that allows pedestrians to cross the crosswalk, and can be understood as being generated when a green pedestrian light is illuminated on the pedestrian signal light (10) and the remaining time for walking is displayed in green numbers on the remaining time indicator (20).

[0056] At this time, the green number displayed on the remaining time indicator (20) represents the time when a pedestrian can begin crossing the crosswalk. As the number decreases, it intuitively allows the pedestrian to recognize that they must cross the crosswalk quickly, thereby performing the function of guiding the pedestrian to cross the crosswalk safely. It is linked with the green light status of the pedestrian signal light (10) to display how much time remains for crossing in seconds.

[0057] Accordingly, it is preferable to understand that when the above-described control unit (200) generates a pedestrian crossing signal, the control unit (300) is controlled to output an 'O'-shaped symbol or the word 'green' in response to the pedestrian crossing signal, as the pedestrian can cross the crosswalk.

[0058] Meanwhile, the aforementioned pedestrian prohibition signal can be understood as a concept of a pedestrian impediment signal meaning a state in which a pedestrian cannot walk across the crosswalk, and is generated when the red pedestrian light of the pedestrian signal light (10) is turned on and the remaining time indicator (20) is turned off or when a red number is displayed on the remaining time indicator (20).

[0059] At this time, when the red pedestrian light of the pedestrian signal light (10) is lit, pedestrians cannot cross the crosswalk, and the signal may indicate that it is a time when vehicles have priority in passing by in conjunction with the vehicle signal.

[0060] In addition, when the pedestrian prohibition signal is active, the remaining time indicator (20) may indicate the remaining time of the vehicle signal or the remaining waiting time until the next pedestrian signal in seconds.

[0061] Accordingly, when the above-described control unit (200) generates a pedestrian prohibition signal, it can be understood that the display unit (300) is controlled to output an 'X' shaped symbol or the character 'Red' in response to the pedestrian prohibition signal, as pedestrians are prohibited from crossing the crosswalk.

[0062] Meanwhile, if the green pedestrian light of the pedestrian signal (10) flashes for a certain period of time (e.g., 10 seconds or less) immediately before the pedestrian signal ends at the pedestrian signal light (10), the remaining time indicator (20) may also flash a green number to reflect the signal.

[0063] In this case, the control unit (200) described above can generate a signal indicating imminent pedestrian access when the green pedestrian light in the pedestrian signal light (10) flashes or when the remaining green time value output to the remaining time indicator (20) is 10 seconds or less.

[0064] At this time, the aforementioned pedestrian imminent signal can be understood as a pedestrian caution signal that prohibits pedestrians who have not yet entered the crosswalk from crossing the crosswalk, and induces pedestrians who are crossing the crosswalk to quickly complete the crossing or stop crossing and return to the sidewalk, and can be understood as a signal that controls the display unit (300) to output the pedestrian possible signal in a flashing form.

[0065] Accordingly, the above-described control unit (200) controls the display unit (300) to output an 'O'-shaped symbol or the character 'green' in response to the above-described imminent walking signal, and can control the symbol or character output to the display unit (300) to blink.

[0066] For example, if an O-shaped symbol or the word 'green' is continuously illuminated on the display unit (300) while the walking signal is active, the O-shaped symbol or the word 'green' can be output to flash at a regular interval from the moment the walking signal is activated, and this can have the effect of allowing a person with color vision deficiency to intuitively recognize the signal change.

[0067] In addition, it is desirable to set the flashing cycle of the O'-shaped symbol or the word 'green' at a constant interval (e.g., 3 to 5 seconds) so that people with color vision deficiencies can easily recognize it, and it may be possible to set the flashing cycle to a shorter interval (e.g., 1 to 2 seconds) immediately before the end of the pedestrian signal (e.g., 3 seconds or less) or to increase the output brightness of the display unit to draw the attention of people with color vision deficiencies, but the present invention is not limited thereto.

[0068] Meanwhile, as an embodiment of the present invention, the above-described control unit (200) is electrically connected to a pedestrian signal light (10) and a remaining time indicator (20) to receive pedestrian signal information in real time, and can receive the signal in the following manner.

[0069] Generally, since the pedestrian signal light (10) operates by receiving power from the traffic signal controller, monitoring the voltage status inside the pedestrian signal light (10) allows for real-time identification of the pedestrian-enabled and pedestrian-prohibited states.

[0070] At this time, by detecting the voltage change that occurs when the red pedestrian light and the green pedestrian light of the pedestrian signal light (10) are turned on, it is possible to analyze which pedestrian signal state the corresponding voltage corresponds to.

[0071] In addition, the above-described control unit (200) can receive the number output to the remaining time indicator (20) by converting it into digital data while electrically connected to the remaining time indicator (20).

[0072] Generally, the remaining time indicator (20) can display the remaining time for walking using a 7-segment display or an LED display module, and the display module can operate by internally outputting numbers based on electronic signals.

[0073] For example, in the case of a 7-segment display, when a specific number is displayed, an individual electrical signal is generated for each segment (LED element), and the control unit (200) can detect these signals to determine the currently displayed number.

[0074] In addition, in the case of an LED display module, the control unit (200) can receive a decimal number output from the display module by converting it into a binary or hexadecimal digital data form, and based on this, can analyze the remaining time of the pedestrian permission signal and pedestrian prohibition signal in real time.

[0075] Accordingly, it is preferable to understand that the above-described control unit (200) can determine pedestrian signal information, either a pedestrian-allowed signal or a pedestrian-prohibited signal, by combining the voltage value detected by the pedestrian signal light (10) and the data received from the remaining time indicator (20).

[0076] Meanwhile, although not illustrated in the attached drawings, the above-described control unit can detect the lighting status of the red / green pedestrian lights of the pedestrian signal in real time and compare the generated first signal data with the second signal data received from the option board installed in the traffic signal controller, and if the first signal data and the second signal data are inconsistent, control the display unit to turn off the light or output a warning signal to the display unit.

[0077] At this time, the first signal data described above is data generated by detecting the red / green pedestrian light status of the pedestrian signal light (10) in real time, and can be obtained based on changes in voltage or current applied to the pedestrian signal light (10).

[0078] That is, when the green pedestrian light of the pedestrian signal light (10) is turned on, a specific voltage (V1) is applied, and when the red pedestrian light is turned on, a different voltage (V2) may be applied, and the control unit (200) can generate first signal data by detecting such voltage changes and converting the corresponding signal into a digital signal.

[0079] Meanwhile, when the pedestrian signal light (10) flashes, the voltage may fluctuate periodically according to the flashing cycle, and the control unit (200) may additionally determine whether the pedestrian signal is flashing by sampling these voltage changes at regular intervals, and the present invention is not limited thereto.

[0080] In addition, the above-described control unit (200) may generate first signal data based on the power supply status of the pedestrian signal light (10) and electrical signals generated in the internal circuit, thereby enabling real-time monitoring of whether the pedestrian signal light (10) is operating normally.

[0081] Meanwhile, the second signal data described above is data received from an option board installed in a traffic signal controller, and may include information related to the lighting status of the red / green pedestrian lights and signal switching timing of the pedestrian signal light (10) transmitted from the traffic signal controller.

[0082] That is, the traffic signal controller generates an operation command for the pedestrian signal light and transmits it to the option board, and the option board converts the command into a digital signal form and transmits it to the pedestrian signal light (10), and at the same time, can also transmit the same signal to the control unit (200).

[0083] In this way, the control unit (200) can determine whether the current pedestrian signal light (10) is operating normally by using the second signal data received from the option board.

[0084] Meanwhile, the above-described control unit (200) can determine whether there is a match between the signal operation status of the pedestrian signal light (10) and the command transmitted from the traffic signal controller by comparing the received second signal data with the first signal data detected in real time.

[0085] At this time, the above-described control unit (200) may be configured to determine whether the pedestrian signal light (10) is operating normally by comparing the first signal data and the second signal data in the following manner.

[0086] First, as an embodiment of the present invention, the control unit (200) described above may be configured to determine whether the signal state matches by directly comparing the first signal data and the second signal data.

[0087] For example, if the first signal data described above is a signal indicating that the green pedestrian light of the pedestrian traffic light (10) is lit, and the second signal data described above is a command to light the green pedestrian light transmitted from the option board, it can be determined that the first signal data and the second signal data match, and thus the pedestrian traffic light (10) can be determined to be operating normally. On the other hand, if the first signal data and the second signal data described above do not match, it can be determined that there is an abnormality in the operation of the pedestrian traffic light (10).

[0088] In addition, as another embodiment of the present invention, the control unit (200) described above may be configured to detect the flashing state of the pedestrian signal light (10) and compare whether the flashing period detected in the first signal data described above matches the flashing period set in the second signal data described above.

[0089] For example, if the green pedestrian light is set to flash at 3-second intervals in the second signal data described above, the control unit (200) described above may be configured to determine whether the flashing interval detected in the first signal data described above matches 3 seconds.

[0090] At this time, if the aforementioned flashing cycle is inconsistent, it may be determined that there is an abnormality in the operation of the pedestrian signal light (10).

[0091] In addition, as another embodiment of the present invention, the above-described control unit (200) may be configured to determine the signal maintenance state of the pedestrian traffic light (10) by comparing whether the red / green pedestrian light of the pedestrian traffic light (10) is continuously lit for a specific period of time.

[0092] For example, if the green pedestrian light is set to be maintained for 30 seconds in the second signal data described above, the control unit (200) described above may be configured to check whether the lighting time of the green pedestrian light detected in the first signal data described above is maintained for 30 seconds or more.

[0093] If the signal changes faster than the set maintenance time, it may be determined that there is a problem with the operation of the pedestrian signal light (10).

[0094] In this way, the control unit (200) described above may be configured to detect whether the pedestrian signal light (10) is operating normally by comparing the first signal data described above and the second signal data described above, and when a signal mismatch is detected, the display unit (300) described above may be turned off or a warning signal may be output to the display unit (300) described above so that even a person with color vision deficiency can intuitively recognize it.

[0095] Specifically, when the control unit (200) described above detects a discrepancy between the first signal data and the second signal data and outputs a warning signal to the display unit (300), it is preferable to output a character such as 'Warning'. If necessary, it may be possible to control the character 'Warning' to blink, or to output a symbol or character other than the previously outputted 'O' or 'X' shape symbol or 'Green' or 'Red' character, and the present invention is not limited thereto.

[0096] Returning to Fig. 1 to continue the explanation, the device (1000) of the present invention may include a display unit (300).

[0097] The above-described display unit (300) is mounted within the above-described housing (100) and can perform the function of outputting walking signal information in the form of characters or symbols according to the control of the above-described control unit (200).

[0098] At this time, the above-described display unit (300) is preferably composed of a dot matrix in which a plurality of LEDs are arranged in a grid shape, thereby allowing various characters or symbols to be flexibly output.

[0099] Specifically, referring to FIGS. 4 and 5, which illustrate an example in which a character or symbol corresponding to pedestrian signal information output to the pedestrian signal light (10) and the remaining time indicator (20) is output from the display unit (300), the above-described display unit (300) can be configured to detect in real time the red / green pedestrian light status of the pedestrian signal light (10) and the pedestrian remaining time information output to the remaining time indicator (20), and to output the pedestrian signal information corresponding thereto in the form of a character or symbol.

[0100] For example, as illustrated in FIG. 4 (a), when the green pedestrian light (12) of the pedestrian signal light (10) is lit and the remaining time for walking is displayed as a green number on the remaining time indicator (20), the display unit (300) described above can be controlled to output an 'O' shaped symbol so as to intuitively inform a pedestrian with color vision deficiency that they can cross the crosswalk.

[0101] Additionally, as shown in Fig. 4(b), when the red pedestrian light (11) of the pedestrian signal light (10) is lit and a red number is displayed on the remaining time indicator (20), it can be controlled to display an 'X' shaped symbol to inform a pedestrian with color vision deficiency that they cannot cross the crosswalk.

[0102] In addition, referring to FIG. 5, the above-described display unit (300) can be configured to output pedestrian signal information as text, in addition to a simple symbol output method, in order to convey pedestrian signal information more intuitively.

[0103] For example, as illustrated in FIG. 5(a), when the green pedestrian light (12) of the pedestrian signal light (10) is lit and the remaining time for walking is displayed as a green number on the remaining time indicator (20), the display unit (300) can clearly recognize that a pedestrian with color vision deficiency is currently in a walking state by displaying the word 'green'.

[0104] On the other hand, as illustrated in FIG. 5(b), when the red pedestrian light (11) of the pedestrian signal light (10) is lit and a red number is displayed on the remaining time indicator (20), the display unit (300) can display the word 'red' so that a pedestrian with color vision deficiency can easily understand that they are currently unable to walk.

[0105] That is, the display unit (300) described above is configured to provide a method of outputting symbols and characters in parallel, rather than distinguishing only by color information, so that even people with color vision deficiencies can easily recognize pedestrian signal information. This allows pedestrians to clearly recognize whether walking is possible through symbols such as 'O' and 'X' or characters such as 'green' and 'red' even when they cannot distinguish colors, thereby improving the accuracy of pedestrian signal recognition.

[0106] In addition, the above-described display unit (300) can detect the signal status output to the pedestrian signal light (10) and the remaining time indicator (20) in real time and convert it into a character or symbol form so that all pedestrians, including those with color vision deficiencies, can intuitively recognize it, thereby further enhancing the safety of all pedestrians, including those with color vision deficiencies.

[0107] Meanwhile, the display unit (300) mounted within the housing (100) is formed at the same height as or at a similar ratio to the height of the pedestrian signal light (10) or the green pedestrian signal light and the remaining time indicator (20) so as to be balanced with the pedestrian signal light (10) and the remaining time indicator (20), taking into consideration the readability and visibility of people with color vision deficiencies, thereby maintaining consistency of information output from the pedestrian signal light (10), the remaining time indicator (20), and the display unit (300).

[0108] In summary, according to the pedestrian signal remaining time guidance device for colorblind people described above, the present invention converts pedestrian signal information output from a pedestrian traffic light and a remaining time indicator installed on the pedestrian traffic light into a character or symbol form and outputs it, thereby enabling a colorblind person to intuitively determine whether walking is possible, such as whether walking is allowed or prohibited, which has the effect of improving pedestrian safety.

[0109] In addition, according to one embodiment of the present invention, the pedestrian signal remaining time guidance device of the present invention is equipped with a coupling means that is detachable from the pedestrian signal light, thereby enabling easy installation and maintenance on the pedestrian signal light through the coupling means without modifying the existing pedestrian signal light, thus increasing economic efficiency.

[0110] In addition, according to one embodiment of the present invention, when the green pedestrian light flashes on a pedestrian traffic light or the remaining time value of the green displayed on the remaining time indicator is 10 seconds or less, a signal indicating imminent pedestrian crossing is generated, and a corresponding 'O'-shaped symbol or the word 'green' is displayed in a flashing form so that pedestrians can recognize the signal change in advance, thereby having the effect of inducing safe crossing of pedestrians.

[0111] Although the walking signal remaining time guidance device for colorblind people proposed in the present invention has been described above, the concept of the present invention is not limited to the embodiments presented in this specification. A person skilled in the art who understands the concept of the present invention may easily propose other embodiments within the scope of the same concept by adding, changing, deleting, or adding components, and such are also to be considered to fall within the scope of the concept of the present invention.

[0112] Furthermore, terms such as "include," "compose," or "have" described above, unless specifically stated otherwise, mean that the relevant component may be inherent; therefore, they should be interpreted as allowing for the inclusion of additional components rather than excluding them. All terms, including technical or scientific terms, have the same meaning as generally understood by those skilled in the art to which the present invention pertains, unless otherwise defined. Commonly used terms, such as those defined in advance, should be interpreted in accordance with their meaning in the context of the relevant technology and should not be interpreted in an ideal or overly formal sense unless explicitly defined in the present invention.

[0113] The foregoing description is merely an illustrative explanation of the technical concept of the present invention, and those skilled in the art to which the present invention pertains will be able to make various modifications and variations within the scope of the essential characteristics of the present invention. Accordingly, the embodiments disclosed in the present invention are intended to explain, not limit, the technical concept of the present invention, and the scope of the technical concept of the present invention is not limited by such embodiments. The scope of protection of the present invention shall be interpreted by the claims below, and all technical concepts within an equivalent scope shall be interpreted as being included within the scope of rights of the present invention.

Claims

Claim 1 A pedestrian signal remaining time guidance device for a person with color vision deficiency comprises: a housing having a coupling means that is detachably coupled to a pedestrian signal light; a control unit electrically connected to the pedestrian signal light and a remaining time indicator installed on the pedestrian signal light, and detecting the red / green pedestrian light illumination status of the pedestrian signal light and the remaining time information output to the remaining time indicator to generate pedestrian signal information of either a pedestrian-allowed signal or a pedestrian-prohibited signal, and controlling the pedestrian signal information to be converted into characters or symbols and output; and a display unit mounted within the housing and outputting the pedestrian signal information in the form of characters or symbols according to the control of the control unit.The method comprises, wherein the coupling means is composed of a clip-type bracket formed in a U-shape having an open end in one area of ​​the upper or lower surface of the housing, and the housing is fixed to the pedestrian signal light by fitting the open end of the clip-type bracket onto a plate connecting the pedestrian signal light and the support post; the control unit generates a pedestrian permission signal when the green pedestrian light is illuminated in the pedestrian signal light or when a green remaining time is output on the remaining time indicator, and generates a pedestrian prohibition signal when the red pedestrian light is illuminated in the pedestrian signal light or when a red remaining time is output on the remaining time indicator; the control unit controls the display unit to output an 'O'-shaped symbol or the character 'Green' in response to the pedestrian permission signal, and controls the display unit to output an 'X'-shaped symbol or the character 'Red' in response to the pedestrian prohibition signal; and the control unit controls the illumination status of the red / green pedestrian light of the pedestrian signal light in real time from changes in voltage or current applied to the pedestrian signal light. A pedestrian signal remaining time guidance device for a person with color vision deficiency, characterized by comparing first signal data generated by detection with second signal data including an operation command of the pedestrian signal light received from an option board installed in a traffic signal controller, and if the first signal data and the second signal data are inconsistent, controlling the display unit to turn off the light or output a warning signal to the display unit, wherein the warning signal is a signal controlled to output the character 'Warning' or to make the character 'Warning' flash. Claim 2 delete Claim 3 delete Claim 4 delete Claim 5 A walking signal remaining time guidance device for people with color vision deficiencies, wherein, in claim 1, the display unit is composed of a dot matrix in which a plurality of LEDs are arranged in a grid shape. Claim 6 A pedestrian signal remaining time guidance device for a person with color vision deficiency, wherein, in claim 1, the control unit generates a signal indicating imminent pedestrian capability when the green pedestrian light in the pedestrian signal is flashing or when the green remaining time value output to the remaining time indicator is 10 seconds or less. Claim 7 A walking signal remaining time guidance device for a person with color vision deficiency, characterized in that, in claim 6, the control unit controls the display unit to output an 'O'-shaped symbol or the character 'green' in response to the walking imminent signal, and controls the symbol or character output to the display unit to blink. Claim 8 delete

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