Traffic light device changing the guide area depending on the position of the object

Abstract

A traffic signal device is disclosed comprising a plurality of light-emitting modules and a light-emitting control module for controlling the light emission of each of the plurality of light-emitting modules. The traffic signal device further comprises at least one laser module that irradiates a laser onto the ground to emit laser light onto the ground, and a laser control module that controls the laser output of the laser module by synchronizing with a control signal of the light-emitting control module for controlling the light emission of at least one of the plurality of light-emitting modules.

Description

Technology Field

[0001] The present disclosure relates to a traffic signal device (smart light signal) or a set of auxiliary devices including a laser module, and more specifically, to a system that provides a laser output to the ground in addition to a conventional light-emitting signal for pedestrians or vehicles. Background Technology

[0002] In the past, a light-emitting device embedded in the ground adjacent to the boundary between a crosswalk and a sidewalk was utilized as a means to assist traffic signal devices that guide pedestrians to walk or stop. This was a means of ensuring safety for pedestrians who could not see far, walked looking down, or moved while looking at a smartphone.

[0003] However, in order to bury the light-emitting device in the ground in this way, the process of securing space in the ground itself for installation is unavoidable, and there was a disadvantage that the case of the light-emitting device was highly likely to be damaged by the weight and impact caused by the movement of many pedestrians. In addition, there was a disadvantage that maintenance of the light-emitting device was also relatively inconvenient depending on the situation in which it was installed on the ground. Prior art literature

[0004] Registered Patent Publication No. 10-2271092 The problem to be solved

[0005] The present disclosure provides a traffic signal device that provides a signal on the ground for pedestrians or vehicles by irradiating a laser onto the ground in synchronization with a traffic signal system.

[0006] The present disclosure provides a set of auxiliary devices that can enhance a signal notification system based on laser irradiation by being additionally installed to be linked with an existing traffic signal device.

[0007] The purposes of the present disclosure are not limited to those mentioned above, and other purposes and advantages of the present disclosure not mentioned may be understood from the following description and will be more clearly understood from the embodiments of the present disclosure. Furthermore, it will be readily apparent that the purposes and advantages of the present disclosure can be realized by the means and combinations thereof set forth in the claims. means of solving the problem

[0008] A traffic signal device according to one embodiment of the present disclosure includes a plurality of light-emitting modules and a light-emitting control module that controls the light emission of each of the plurality of light-emitting modules. The traffic signal device further includes at least one laser module that irradiates a laser onto the ground to cause laser light to be emitted on the ground, and a laser control module that controls the laser output of the laser module by synchronizing with a control signal of the light-emitting control module for controlling the light emission of at least one of the plurality of light-emitting modules.

[0009] The above traffic signal device may further include an illuminance sensor for measuring ambient illuminance. The laser control module may control the laser output of the laser module so that the irradiation area of ​​the laser module is changed based on the illuminance measured through the illuminance sensor.

[0010] The above traffic signal device may include a camera for photographing an area including the laser irradiation area of ​​the laser module, and an object recognition module for identifying an object within the area photographed through the camera. Here, the laser control module may control the laser output of the laser module so that the irradiation area of ​​the laser module is changed based on the location of the object recognized through the object recognition module.

[0011] The laser control module may control the laser module so that it outputs light of a first color when the first light-emitting module among the plurality of light-emitting modules is driven to emit light, and may also control the laser module so that it outputs light of a second color when the second light-emitting module among the plurality of light-emitting modules is driven to emit light.

[0012] The plurality of light-emitting modules may include light-emitting modules that output light of different colors to guide pedestrians walking or stopping on the crosswalk. Additionally, the laser module may irradiate a laser onto an area that matches the boundary line between the crosswalk and the sidewalk.

[0013] Here, the laser module may include a first laser module that irradiates a laser onto an area matching the boundary line between the crosswalk and the sidewalk, and a second laser module that irradiates a laser onto an area matching the stop line provided in the direction of traffic of a vehicle crossing the crosswalk.

[0014] The laser module may selectively output a laser of one of a plurality of colors to guide the driving or stopping of a vehicle in the direction of travel on the road passing through the crosswalk.

[0015] According to one embodiment of the present disclosure, a set of auxiliary devices to be additionally installed in a traffic signal device comprising a plurality of light-emitting modules and a light-emitting control module comprises at least one laser module that irradiates a laser onto the ground to cause laser light to be emitted on the ground, and a laser control module that controls the laser output of the laser module by synchronizing with a control signal of the light-emitting control module for controlling the light emission of at least one of the plurality of light-emitting modules.

[0016] A traffic signal device according to one embodiment of the present disclosure includes a plurality of light-emitting modules, at least one laser module that irradiates a laser onto the ground to emit laser light onto the ground, and an integrated control module that controls the light emission of each of the plurality of light-emitting modules and controls the laser output of the laser module. The integrated control module controls the light emission of at least one of the plurality of light-emitting modules and the laser output of the laser module by synchronizing them. Effects of the invention

[0017] A traffic signal device according to the present disclosure can additionally provide a signal on the ground for pedestrians or vehicles by irradiating a laser (smart light) onto the ground in synchronization with a traffic signal system. Brief explanation of the drawing

[0018] FIG. 1 is a block diagram illustrating the configuration of a traffic signal device that additionally includes a laser module and a laser control module in addition to a conventional configuration according to one embodiment of the present disclosure, FIG. 2a is a drawing for explaining the operation of a laser module included in a traffic signal device for pedestrian signals according to one embodiment of the present disclosure, FIG. 2b is a drawing for explaining the operation of a laser module included in a traffic signal device for pedestrian signals according to one embodiment of the present disclosure, FIG. 3a is a drawing for explaining the operation of a laser module included in a traffic signal device for a vehicle signal according to one embodiment of the present disclosure, FIG. 3b is a drawing for explaining the operation of a laser module included in a traffic signal device for a vehicle signal according to one embodiment of the present disclosure, FIG. 4 is a block diagram illustrating the configuration of a traffic signal device according to various embodiments of the present disclosure, FIG. 5 is a block diagram illustrating the configuration of a traffic signal device including an integrated control module according to one embodiment of the present disclosure, and FIG. 6 is a block diagram illustrating the configuration of a traffic signal device including a laser module and a laser control module according to one embodiment of the present disclosure. Specific details for implementing the invention

[0019] Before specifically describing the present disclosure, the method of description in the specification and drawings is described.

[0020] First, the terms used in this specification and claims have been selected based on general terms considering their functions in the various embodiments of this disclosure. However, these terms may vary depending on the intent of those skilled in the art, legal or technical interpretations, and the emergence of new technologies. Additionally, some terms have been arbitrarily selected by the applicant. Such terms may be interpreted according to the meanings defined in this specification; in the absence of specific definitions, they may be interpreted based on the overall content of this specification and common technical knowledge in the relevant field.

[0021] In addition, the same reference numbers or symbols described in each drawing attached to this specification represent parts or components that perform substantially the same function. For convenience of explanation and understanding, the same reference numbers or symbols are used to describe different embodiments. That is, even if components having the same reference number are all depicted in multiple drawings, the multiple drawings do not imply a single embodiment.

[0022] Additionally, in this specification and claims, terms including ordinal numbers, such as "first," "second," etc., may be used to distinguish between components. These ordinal numbers are used to distinguish identical or similar components from one another, and the meaning of the terms should not be limited by the use of such ordinal numbers. For example, the order of use or arrangement of components combined with such ordinal numbers should not be restricted by the number. If necessary, each ordinal number may be used interchangeably.

[0023] In this specification, singular expressions include plural expressions unless the context clearly indicates otherwise. In this application, terms such as "comprising" or "consisting of" are intended to specify the existence of the features, numbers, steps, actions, components, parts, or combinations thereof described in the specification, and should be understood as not precluding the existence or addition of one or more other features, numbers, steps, actions, components, parts, or combinations thereof.

[0024] In the embodiments of the present disclosure, terms such as "module," "unit," "part," etc. are used to refer to a component that performs at least one function or operation, and such component may be implemented in hardware or software, or in a combination of hardware and software. Additionally, a plurality of "modules," "units," "parts," etc. may be integrated into at least one module or chip and implemented as at least one processor, except where each needs to be implemented in specific individual hardware.

[0025] Furthermore, in the embodiments of the present disclosure, when a part is described as being connected to another part, this includes not only a direct connection but also an indirect connection through another medium. Additionally, the meaning that a part includes a certain component implies that, unless specifically stated otherwise, it does not exclude other components but may include additional components.

[0026] FIG. 1 is a block diagram illustrating the configuration of a traffic signal device that additionally includes a laser module and a laser control module in addition to a conventional configuration according to one embodiment of the present disclosure.

[0027] The traffic signal device (100) corresponds to a device installed on a road or sidewalk to provide traffic signals for pedestrians or vehicles. The traffic signal device (100) may be formed as a pole or support including a traffic light for vehicles or pedestrians installed on the road or sidewalk.

[0028] Referring to FIG. 1, a conventional traffic signal device (e.g., a traffic light) includes only a plurality of light-emitting modules (110-1, 2, …) and a light-emitting control module (120), but a traffic signal device (100) according to the present disclosure may additionally include at least one laser module (130) and a laser control module (140).

[0029] A plurality of light-emitting modules (110-1, 2, …) may each include at least one light-emitting element for outputting light corresponding to at least one color.

[0030] For example, a first light-emitting module for outputting red light, a second light-emitting module for outputting green light, and a third light-emitting module for outputting yellow light may each be included, but are not limited thereto.

[0031] The light-emitting control module (120) is configured to control the light emission of each light-emitting module and can implement light emission maintenance, flashing, light emission interruption, etc.

[0032] Each light-emitting module may include a light-emitting panel equipped with a light-emitting element, and the light-emitting control module (120) may control at least one driving circuit for driving the light-emitting panel of each light-emitting module.

[0033] The light emission control module (120) may be implemented as at least one control circuit (e.g., Integrated Circuit) or as a computer including memory and a processor. The light emission control module (120) can control the light emission of each light emission module based on a predetermined signal sequence and a time interval corresponding to each signal sequence according to a preset signal system.

[0034] The laser module (130) is configured to irradiate a laser onto the ground so that laser light is emitted on the ground. The laser module (130) may include at least one of an active medium that emits photons to irradiate a laser beam, a laser diode, at least a resonator for reflecting and amplifying light, an output coupler for emitting light, and a lens, but is not limited thereto.

[0035] The laser module (130) may output only a laser corresponding to one color, but may also selectively output a laser corresponding to any one of a plurality of colors. To this end, it may include a plurality of active media or a plurality of laser diodes that emit light of different colors.

[0036] The laser module (130) can project a laser onto the ground area adjacent to the boundary between the crosswalk and the sidewalk to emit a linear laser beam that crosses the pedestrian's entry path to the crosswalk.

[0037] Alternatively, the laser module (130) can project a laser onto a ground area adjacent to the vehicle's stop line adjacent to the crosswalk on the road for the vehicle to travel on, so that a linear laser beam is emitted across the vehicle's path of travel as it passes the crosswalk.

[0038] The laser module (130) may include at least one rotary drive unit for changing the direction of the laser module (130) or the lens direction of the laser module (130) to change the output direction of the laser. For example, the rotary drive unit may be a pan / tilt structure provided on a support structure to which the laser module (130) is attached to drive the vertical / horizontal rotation of the laser module (130). In addition, the rotary drive unit may include, but is not limited to, a gimbal system, a gear train system, a rotary bearing system, a servo motor, etc.

[0039] The laser control module (140) is a configuration for controlling the laser output of the laser module (130). The laser control module (140) may be implemented as at least one control circuit (e.g., Integrated Circuit) or as a computer including memory and a processor.

[0040] As a result of power being supplied to the laser module (130) according to the control of the laser control module (140), energy may be supplied to the active medium of the laser module (130) or power may be supplied to the laser diode. To this end, the laser control module (140) may transmit a control signal to the laser module (130) or control at least one switch or converter for controlling the power supply to the laser module (130).

[0041] The laser control module (140) can control the laser output of the laser module by synchronizing with the control signal of the light emission control module (120) for controlling the light emission of at least one of the plurality of light emission modules (110-1, 2, …).

[0042] Specifically, the laser control module (140) can control the laser module (130) so that when the first light-emitting module (110-1) among the plurality of light-emitting modules (110-1, 2, …) is driven to emit light, the laser module (130) outputs light of a first color. On the other hand, the laser control module (140) can control the laser module (130) so that when the second light-emitting module (110-2) among the plurality of light-emitting modules (110-1, 2, …) is driven to emit light, the laser module (130) outputs light of a second color. Examples will be described later through FIGS. 2a to 2b and FIGS. 3a to 3b, respectively.

[0043] The laser control module (140) may control the rotational drive unit of the laser module (130) described above by generating a control signal including the laser output direction of the laser module (130). In this case, the direction of the laser module (130) can be adjusted by the laser control module (140).

[0044] Meanwhile, although not illustrated, the traffic signal device (100) may include at least one power supply module for supplying power to each of the above components. The power supply module may supply power to each component within the traffic signal device (100) by collecting power from an external power source through at least one terminal or cable, or it may supply power to each component within the traffic signal device (100) through at least one battery provided by itself.

[0045] Meanwhile, according to one embodiment of the present disclosure, in a conventional traffic signal device comprising a plurality of light-emitting modules (110-1, 2, …) and a light-emitting control module (120), an auxiliary device set (200) that can be optionally additionally installed may be implemented. Specifically, the auxiliary device set (200) is intended to be additionally installed in a conventional traffic signal device (100) comprising a plurality of light-emitting modules and a light-emitting control module, and may include at least one laser module (130) and a laser control module (140). During the installation process, the laser control module (140) may be connected and installed to be synchronized with the control signal of the light-emitting control module (120) of the traffic signal device (100). By utilizing the auxiliary device set (200) in this way, there is an advantage that the signal environment can be improved by additionally installing the auxiliary device set (200) including the laser module, while utilizing existing infrastructure such as using the conventional traffic signal device used in the existing traffic environment as is.

[0046] FIG. 2a is a drawing for explaining the operation of a laser module included in a traffic signal device for pedestrian signals according to one embodiment of the present disclosure.

[0047] Referring to FIG. 2a, the traffic signal device (100) may include light-emitting modules (110-1, 2) that output light of different colors to guide pedestrians walking or stopping at a crosswalk. In this case, the laser module (130-1, 2) can be synchronized with the operation of each light-emitting module to irradiate a laser onto an area that matches the boundary line between the crosswalk and the sidewalk. For synchronization, a control signal from the light-emitting control module (120) may be transmitted to the laser control module (140).

[0048] For example, when the red light-emitting module (110-1) outputs red light, the laser module (130-1, 2) can irradiate the ground with a red laser, and when the green light-emitting module (110-2) outputs green light, the laser module (130-1, 2) can irradiate the ground with a green laser.

[0049] Meanwhile, multiple laser modules (130-1, 2) may irradiate lasers to different ground areas.

[0050] In this regard, referring to FIG. 2b, unlike FIG. 2a, each laser module (130-1, 2) can irradiate a laser onto a different ground area. Specifically, laser module (130-1) can irradiate a laser onto an area that matches the boundary line between the crosswalk and the sidewalk. Here, the area that matches the boundary line is within a certain distance (e.g., 50 cm, 1 m, etc.) from the boundary line and may correspond to a linear area that is at least partially parallel to the boundary line. Also, laser module (130-2) can irradiate a laser onto an area that matches the stop line provided in the direction of traffic of vehicles crossing the crosswalk. Here, the area that matches the stop line is within a certain distance (e.g., 50 cm, 1 m, etc.) from the boundary line and may correspond to a linear area that is at least partially parallel to the boundary line.

[0051] For example, when the red light-emitting module (110-1) outputs red light, the laser module (130-1) irradiates a red laser, and the laser module (130-2) can irradiate one of a blue, yellow, or red laser to guide the vehicle according to the signal situation (control signal of the light-emitting control module (120).

[0052] For example, when the green light-emitting module (110-2) outputs green light, the laser module (130-1) can irradiate the ground with a green laser and the laser module (130-2) can irradiate the ground with a red laser.

[0053] Meanwhile, FIG. 3a is a drawing for explaining the operation of a laser module included in a traffic signal device for vehicle signals according to one embodiment of the present disclosure.

[0054] Referring to FIG. 3a, the traffic signal device (100) may include light-emitting modules (110-1, 2) that output light of different colors to guide the driving or stopping of a vehicle in the direction of travel on the road passing through the crosswalk.

[0055] In this case, the laser module (130-1, 2) can be synchronized with the operation of each light-emitting module to irradiate a laser onto an area that matches the boundary line between the crosswalk and the sidewalk. For synchronization, a control signal from the light-emitting control module (120) can be transmitted to the laser control module (140).

[0056] For example, when the red light-emitting module (110-1) outputs red light, the laser module (130-1, 2) can irradiate the ground with a red laser or a green laser according to the sequence of pedestrian signals in the traffic system. When the green light-emitting module (110-2) outputs green light, the laser module (130-1, 2) can irradiate the ground with a red laser.

[0057] Meanwhile, likewise, multiple laser modules (130-1, 2) may irradiate lasers to different ground areas.

[0058] In this regard, referring to FIG. 3b, unlike FIG. 3a, each laser module (130-1, 2) can irradiate a laser onto a different ground area. Specifically, laser module (130-1) can irradiate a laser onto an area that matches the stop line provided in the direction of traffic of a vehicle crossing the crosswalk. And, laser module (130-2) can irradiate a laser onto an area that matches the boundary line between the crosswalk and the sidewalk.

[0059] For example, when the red light-emitting module (110-1) outputs red light, the laser module (130-1) irradiates a red laser, and the laser module (130-2) can irradiate a blue or red laser to guide pedestrians according to a signal system (control signal of the light-emitting control module (120)).

[0060] For example, when the green light-emitting module (110-2) outputs green light, the laser module (130-1) can irradiate the ground with a green laser and the laser module (130-2) can irradiate the ground with a red laser.

[0061] As such, the traffic signal device (100) of the present disclosure includes a light-emitting module that functions as a general traffic light as a signal device for vehicles or pedestrians, and also includes one or more laser modules that perform an auxiliary role to provide additional support for signal guidance for vehicles or pedestrians. In particular, since the laser module is installed in an upward direction rather than being buried in the ground and irradiates the laser onto the ground, there is less risk of damage and it is easy to manage. In addition, it has an advantage in terms of implementing a hardware structure for synchronization in that it is installed close to the light-emitting module (compared to a signal device buried in the ground).

[0062] In addition, according to the embodiments described below, the laser module and laser control module according to the present disclosure can dynamically adjust the irradiation area based on ambient illumination or objects, and thus have the advantage of being able to perform optimal operation depending on the environment.

[0063] FIG. 4 is a block diagram illustrating the configuration of a traffic signal device according to various embodiments of the present disclosure.

[0064] Referring to FIG. 4, the traffic signal device (100) of the present disclosure may further include at least one of an illuminance sensor (150), a camera (160), and an object recognition module (170) in addition to the above-described plurality of light-emitting modules, light-emitting control modules (120), laser modules (130), and laser control modules (140).

[0065] The illuminance sensor (150) corresponds to a sensor for measuring ambient illuminance. The illuminance sensor (150) may include at least one of a photodiode, a phototransistor, a photoresistor, an infrared sensor, a CCD sensor, and a CMOS sensor, but is not limited thereto.

[0066] In a related embodiment, the laser control module (140) can control the laser output of the laser module so that the irradiation area of ​​the laser module (130) is changed based on the illuminance measured through the illuminance sensor (150).

[0067] Specifically, the laser control module (140) can control the laser module (130) so that the thickness of the linear area corresponding to the laser irradiation area becomes thinner as the ambient light intensity increases. That is, as the ambient light intensity increases, the laser beam is condensed into a narrower area, so that strong laser light is emitted onto the ground, thereby maintaining signal identification even in a bright environment. Conversely, the laser control module (140) can control the laser module (130) so that the thickness of the linear area corresponding to the laser irradiation area becomes thicker as the ambient light intensity decreases.

[0068] The camera (160) is configured to photograph an area including the laser irradiation area of ​​the laser module. The camera (160) may include at least one image sensor and may include, but is not limited to, an RGB camera, a depth camera, a stereo camera, an infrared camera, etc.

[0069] The object recognition module (170) is configured to identify an object within the area captured by the camera (160). The object recognition module (170) may be implemented in software and / or hardware. For example, the object recognition module (170) may be composed of at least one instruction executed by the processor of the laser control module (140). Alternatively, the object recognition module (170) may be implemented as a separate computer including memory and a processor. Although shown separately in FIG. 4, the object recognition module (170) may, of course, be implemented as a single module integrated with the laser control module (140) described above.

[0070] For example, the object recognition module (170) may include at least one artificial intelligence model (e.g., CNN model) for recognizing pedestrians. Additionally, the object recognition module (170) may identify the area of ​​laser light projected onto the ground by recognizing a specific preset color within the image.

[0071] The laser control module (140) can control the laser output of the laser module (130) so that the irradiation area of ​​the laser module (130) is changed based on the location of the object recognized through the object recognition module (170).

[0072] For example, assume a case where the laser module (130) irradiates a red laser onto an area that matches the boundary line between the crosswalk and the sidewalk.

[0073] Thus, while a red laser is being emitted for pedestrians, the laser control module (140) can identify the number of pedestrians located in the irradiation area on the ground where the laser module (130) emits the laser. If the number of pedestrians located in the irradiation area is greater than a certain number, the laser control module (140) can control the rotation drive of the laser module (130) so that the position of the irradiation area is changed by a certain distance inward toward the crosswalk (in a direction away from the sidewalk).

[0074] After the location of the investigation area is changed, the laser control module (140) can identify the number of pedestrians located on the investigation area again through the camera (160) and the object recognition module (170), and if the number is still above a certain number, the investigation area can be changed again, and if the number is below a certain number, the investigation area can be maintained.

[0075] As a result, the situation where the laser beam on the ground is blocked by people standing closer to the crosswalk than necessary during a red signal can be prevented, and safety can be enhanced by projecting the laser at a position where people close to the crosswalk can see it.

[0076] Additionally, while the laser module (130) is irradiating a red laser for pedestrians onto an area that matches the boundary line between the crosswalk and the sidewalk, the object recognition module (170) may determine whether there is a pedestrian entering the crosswalk. To this end, the object recognition module (170) may identify the crosswalk area based on a pattern or identify the crosswalk area through at least one artificial intelligence model.

[0077] Here, if a pedestrian is present within the crosswalk area, the laser control module (140) can identify the direction of movement of the user recognized in real time through the object recognition module (170) and control the laser module (130) to irradiate a red laser at a location spaced apart by the direction of movement relative to the user's real-time location. That is, the laser control module (140) drives the rotation of the laser module (130) according to the direction of movement and location of a pedestrian who has entered the crosswalk despite the red signal, so that the laser irradiation area is positioned ahead of the pedestrian present on the crosswalk, thereby causing the pedestrian who has entered the crosswalk despite the red signal to recognize the red laser light, and as a result, can induce the pedestrian to stop or turn back. In addition, the visual sight of the laser irradiation area changing in real time according to the pedestrian's movement can contribute to safety by making the pedestrian who has entered the crosswalk more visually visible to surrounding pedestrians as well as moving vehicles.

[0078] Meanwhile, FIG. 5 is a block diagram illustrating the configuration of a traffic signal device including an integrated control module according to one embodiment of the present disclosure.

[0079] Referring to FIG. 5, unlike the above-described embodiment in which a light-emitting control module (120) for controlling a light-emitting module and a laser control module (140) for controlling a laser module (130) are each separately provided, the traffic signal device (100) may include a single integrated control module (120') in which the light-emitting control module (120) and the laser control module (140) are integrated. In this case, the single integrated control module (120') can control the light emission of each of the plurality of light-emitting modules (110-1, 2, …) and can also control the laser output of the laser module (130), and at this time, the light emission of at least one of the plurality of light-emitting modules and the laser output of the laser module can be controlled in synchronization.

[0080] At this time, the traffic signal device (100) is provided with at least one communication interface to synchronize with the light emission control module of another traffic signal device corresponding to an external device, thereby enabling laser output in conjunction with the light emission of the light emission module of another traffic signal device.

[0081] The communication interface may include various interfaces (e.g., Ethernet, USB, Wi-Fi, Wi-Fi Direct, Bluetooth, etc.) for performing wired or wireless communication with adjacent traffic signal devices.

[0082] In addition, in this case, although not shown, the traffic signal device (100) may further include at least one of an illuminance sensor, a camera, and an object recognition module.

[0083] Meanwhile, FIG. 6 is a block diagram illustrating the configuration of a traffic signal device including a laser module and a laser control module according to one embodiment of the present disclosure.

[0084] Referring to FIG. 6, a traffic signal device (100) according to one embodiment of the present disclosure may not include at least one light-emitting module or light-emitting control module, but may include at least one laser module (130) and a laser control module (140). For example, this reflects the fact that a traffic signal device equipped with a light-emitting module and a traffic signal device equipped with a laser module may each be implemented as separate devices.

[0085] In this case as well, although not shown, the traffic signal device (100) may further include at least one of an illuminance sensor, a camera, and an object recognition module.

[0086] Meanwhile, the various embodiments described above may be implemented by combining two or more embodiments, provided that they do not conflict or contradict each other.

[0087] Meanwhile, the various embodiments described above may be implemented in a recording medium readable by a computer or a similar device using software, hardware, or a combination thereof.

[0088] According to hardware implementation, the embodiments described in this disclosure may be implemented using at least one of ASICs (Application Specific Integrated Circuits), DSPs (digital signal processors), DSPDs (digital signal processing devices), PLDs (programmable logic devices), FPGAs (field programmable gate arrays), processors, controllers, microcontrollers, microprocessors, and other electrical units for performing functions.

[0089] In some cases, the embodiments described herein may be implemented as the processor itself. In a software implementation, embodiments such as the procedures and functions described herein may be implemented as separate software modules. Each of the aforementioned software modules may perform one or more functions and operations described herein.

[0090] Meanwhile, computer instructions or computer programs for performing processing operations in a traffic signal device, an auxiliary device set, etc., according to various embodiments of the present disclosure described above may be stored in a non-transitory computer-readable medium. When such computer instructions or computer programs stored in the non-transitory computer-readable medium are executed by a processor of a specific device, the specific device described above performs processing operations in a traffic signal device, an auxiliary device set, etc., according to various embodiments described above.

[0091] A non-transient computer-readable medium refers to a medium that stores data semi-permanently and can be read by a device, unlike media that store data for a short period of time such as registers, caches, and memory. Specific examples of non-transient computer-readable media include CDs, DVDs, hard disks, Blu-ray discs, USBs, memory cards, and ROMs.

[0092] Although preferred embodiments of the present disclosure have been illustrated and described above, the present disclosure is not limited to the specific embodiments described above. It is understood that various modifications can be made by those skilled in the art without departing from the essence of the present disclosure as claimed in the claims, and such modifications should not be understood individually from the technical spirit or perspective of the present disclosure. Explanation of the symbols

[0093] 100: Traffic signal device 200: Auxiliary device set 110-1, 2: Light-emitting module 120: Light emission control module 130: Laser Module 140: Laser control module 150: Light sensor 160: Camera 170: Object Recognition Module

Claims

Claim 1 A traffic signal device comprising: a plurality of light-emitting modules; and a light-emitting control module for controlling the light emission of each of the plurality of light-emitting modules; further comprising: at least one laser module for irradiating a laser onto the ground to cause laser light to be emitted on the ground; and a laser control module for controlling the laser output of the laser module by synchronizing with a control signal of the light-emitting control module for controlling the light emission of at least one of the plurality of light-emitting modules; wherein the plurality of light-emitting modules include light-emitting modules that output light of different colors to guide a pedestrian walking or stopping on a crosswalk; and wherein the laser module comprises: at least one rotary drive unit for changing at least one of the direction of the laser module and the direction of the lens; and a first laser module for irradiating a laser onto an irradiation area that matches the boundary line between the crosswalk and the sidewalk. and a second laser module that irradiates a laser onto an irradiation area matching a stop line provided in the direction of travel of a vehicle crossing the crosswalk; wherein the laser control module controls the rotary drive unit to change the output direction of the laser module, and the traffic signal device includes an illuminance sensor for measuring ambient illuminance; wherein the laser control module controls the laser output of the laser module so that the irradiation area of ​​the laser module is changed based on the illuminance measured through the illuminance sensor, and controls the laser module so that the thickness of the linear area corresponding to the irradiation area of ​​the laser module becomes thinner as the ambient illuminance measured by the illuminance sensor is high, and the thickness of the linear area becomes thicker as the ambient illuminance is low, and wherein the traffic signal device includes a camera for photographing an area including the laser irradiation area of ​​the laser module; and an object recognition module for identifying an object within the area photographed through the camera.A traffic signal device comprising: a laser control module that controls the laser output of the first laser module so that the irradiation area of ​​the first laser module is changed based on the position of an object recognized through the object recognition module; and when the number of pedestrians located in the laser irradiation area of ​​the first laser module is greater than or equal to a preset threshold value, controls the first laser module so that the position of the laser irradiation area is changed inward by a preset distance toward the crosswalk; the object recognition module identifies the position and direction of travel of a pedestrian entering the crosswalk while the first laser module is irradiating laser light into the irradiation area in correspondence with the color of the light-emitting module for guiding the pedestrian to stop toward the crosswalk; and the laser control module controls the first laser module to irradiate laser light at a position spaced apart by the direction of travel based on the real-time position of the pedestrian.

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