KR102506056B1 - Safety marking apparatus using laser light - Google Patents

Abstract

The present invention relates to a safety display device using a laser light source, which can improve the safety by performing a display changed in accordance with an environment through a laser beam. The safety display device using a laser light source comprises: a laser irradiation device including one or more light source units for emitting a laser beam, a reflection unit for changing an oriented direction of the laser beam from the light source units, and a lens unit for diffusing the laser beam determined with a direction from the reflection unit to a line beam; a relay module for receiving a point beam from the laser irradiation device to reproduce the line beam; and a control unit for controlling the laser irradiation device and the relay module.

Description

Safety display device using laser light source {SAFETY MARKING APPARATUS USING LASER LIGHT}

The present invention relates to a safety display for facilities such as a crosswalk on a road, and more particularly, to a safety display device using a laser light source that can improve safety by performing a display changed according to the environment through a laser beam. will be.

There are various facilities for the safety of drivers or pedestrians on the road, and traditionally, crosswalks, lanes, and traffic lights correspond to them. Conventionally, development has been made in the direction of enhancing visibility by increasing the bead content of these road safety facilities or using LED lamps.

However, improvement in safety accidents is not guaranteed by simply increasing visibility, so in recent years it is possible to provide information suitable for various road environments and reflect the habits and speeds of drivers or pedestrians to more reliably recognize them. There are suggestions on how.

For example, it is a well-known fact that when bad weather such as fog or rain occurs on a road, traffic accidents increase and the degree of accident damage also increases. In addition, in many cases, bad weather such as fog and rain occurs without warning, so vehicle drivers or traffic officials are unable to prepare for bad weather, which increases damage, especially when bad weather overlaps at night, increasing the possibility of accidents.

In consideration of these problems, a device or system for safely guiding a vehicle on a road in bad weather has been developed.

Korean Patent Publication No. 10-2006-0122135 discloses a crosswalk stop induction device of the prior art, and FIG. 1 is a conceptual diagram thereof.

Looking at this in detail, a pair of supports 11 and 12 installed vertically at both ends of the crosswalk, a light source 20 installed on one support 11 and emitting light toward the other support 12, , It is configured to include a control unit 30 that is connected to the traffic light system and controls the operation of the light source 20 according to a signal, and emits light from the light source 20 located at the bottom of the support 11 when a yellow signal is received. The light source 20 located at the top of the support 11 when the yellow signal is changed from the yellow signal to the red signal applies the emission signal so that the light source 20 finally emits light.

However, in this case, there is a problem in that a space for installing a support and arranging a plurality of light sources is required, the construction process is complicated, and the cost is excessively increased. This also leads to a problem of maintainability.

In addition, it is not possible to respond flexibly to changes in the road environment, and when construction such as pavement of roads or sidewalks or reinstallation of traffic lights is necessary, the cost required for re-construction is excessive.

The present invention has been made to solve the above problems, and an object of the present invention is to provide a safety display device using a laser light source to improve safety display capability in accordance with various environmental changes.

In addition, an object of the present invention is to provide a safety display device using a laser light source that has excellent workability, is economical, and can be used semi-permanently.

The present invention provides a laser irradiation device (2000) including one or more light source units from which point beams are emitted, and a reflector for converting the direction of the point beams from the light source unit, and receiving and converting the point beams from the laser irradiation device. A relay module 2300 having a relay-side reflector and a relay-side lens section that diffuses point beams from the relay-side reflector in a selected direction and converts them into line beams, and is connected to the laser irradiation device and the relay module to emit light. A control unit 1000 that selects the type of laser beam to be used and determines the direction and position of a display unit on which line beams are displayed, wherein the reflector has a direction control unit that adjusts the direction of the point beam, and the relay side lens unit Provided is a safety display device using a laser light source having a line beam adjusting unit for adjusting the direction and position of a line beam.

In a preferred embodiment, the laser irradiation device and the relay module are disposed with a crosswalk interposed therebetween to display a display unit in conjunction with a waiting line or a stop line, and the direction and position of the display unit can be determined according to the operation of traffic lights.
It is preferable that the plurality of reflectors are configured to correspond to each of the plurality of light source units.

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The control unit may verify the position of the point beam incident to the relay module and control the direction control unit to form the point beam at the position of the relay-side reflector.

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The relay-side lens unit rotates or vibrates the display unit where the line beam is formed by rotationally driving the line beam adjusting unit, thereby increasing visual perception. This operation may be performed when a traffic light is out of order or an emergency situation is recognized by another sensor.

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According to the configuration of the present invention described above, there is an effect of maximizing the safety of pedestrians or workers by intuitively and efficiently displaying information related to safety in a road or industrial environment by displaying a line beam on the floor of a road surface or sidewalk. .

In addition, since only one laser irradiation device can be operated in conjunction with relay modules to form a display unit in a plurality of locations, it is economical and central management is efficient.

1 is a conceptual diagram of a crosswalk stop guidance device of the prior art.
2 is a conceptual diagram for explaining a safety display device using a laser light source according to the present invention.
3 is a configuration diagram showing an embodiment of a laser irradiation device in a safety display device using a laser light source according to the present invention.
4 is a configuration diagram showing a further embodiment of the laser irradiation device of the present invention.
5 is a conceptual diagram illustrating a safety display device using a laser light source according to an additional concept of the present invention.

Hereinafter, a safety display device using a laser light source according to the present invention will be described in more detail with reference to the accompanying drawings.

However, the embodiments described below are only intended to be described in detail so that those skilled in the art can easily practice the invention, thereby limiting the scope of protection of the present invention. doesn't mean

Throughout the specification and claims, when a part includes a certain component, it means that it may include other components, not excluding other components unless otherwise stated.

The present invention basically includes at least one light source unit that emits a laser beam, a reflector that converts the directing direction of the laser beam from the light source unit, and a laser beam whose direction has been determined from the reflector that is diffused into a line beam to determine the formation direction. Safety using a laser light source including a laser irradiation device composed of a lens unit to do, a relay module for receiving a point beam from the laser irradiation device and producing a line beam again, and a control unit for controlling the laser irradiation device and the relay module. display device is provided.

The present invention is mainly described as a main example of displaying a display for pedestrian safety at a crosswalk on the road, but if safety display can be made through light, it is installed in various places to display industrial environments and services such as factories and farms. includes being

2 is a conceptual diagram of a safety display device using a laser light source according to an embodiment of the present invention.

The safety display device using a laser light source according to the present invention mainly consists of a laser irradiation device 2000 that irradiates laser in a selected shape and direction to form a line beam and a control unit 1000 that controls it.

In the illustrated embodiment, it is shown that it is applied to a road environment with a crosswalk 101. In such a crosswalk 101, a sidewalk sign, a stop line, and a traffic light 300 are configured, and a laser irradiation device 2000 irradiates a laser beam to a selected location to display a predetermined safety mark.

In the present invention, a road is described on the basis of having a surface on which an asphalt pavement is made and a vehicle with markings such as lanes and crosswalks can run, as in the illustrated embodiments, but various types of surfaces or spaces on which vehicles can move It can be understood as including. Accordingly, the road environment can be understood to include various means through which people, horses, two-wheeled vehicles, etc. can operate or walk as well as vehicles such as the road and adjacent shoulder roads, sidewalks, crosswalks, overpasses, and underpasses. will be.

In one embodiment of the present invention, let's look at the case where the waiting line of the sidewalk and the stop line of the crosswalk can be selectively directed. The laser irradiation device 2000 has a structure for converting a laser beam in the form of a point beam into a line beam and a structure for adjusting the irradiation direction, and a specific embodiment thereof will be described later.

This laser irradiation device 2000 irradiates a line beam having a selected length and beam width to the road surface to perform a predetermined guide function, and alternately irradiates a waiting line (or virtual line) and a stop line where pedestrians wait at a crosswalk. can In the form of a general crosswalk 101, the waiting line and the stop line are formed at right angles, but this is optional according to the road environment, and the laser irradiation device 2000 may set the angle in advance. In this embodiment, the line beam displayed on the standby line is defined as the first display unit 2010a, and the line beam displayed on the stop line is defined as the second display unit 2010b.

The first display unit 2010a displays a waiting line when the pedestrian signal of the crosswalk 101 is red so that pedestrians can intuitively know the situation in which they should not cross, and the second display unit 2010b displays the crosswalk 101 When the walking signal of ) is green, it is displayed along the stop line so that the driving vehicle can intuitively recognize that the walking signal is turned on. The color of the line beam irradiated from the laser irradiation device 2000 is optional, and various colors such as red, green, or yellow may be used for safety indication. It goes without saying that in some cases, the display units may be displayed in a flickering manner.

The laser irradiation device 2000 is connected to the control unit 1000 so that the shape and/or color and/or direction of the beam can be controlled. can work in tandem.

The control unit 1000 and/or the laser irradiation device 2000 may be made of known elements such as a power supply unit, a signal control unit, or an oscillation unit, and the power supply unit may be composed of a low voltage supply unit and/or a high voltage supply unit to select an output. will be.

Depending on the case, the control unit 1000 may be modularly configured and combined with the laser irradiation device 2000, or may function so that the control unit 1000 controls a plurality of laser irradiation devices 2000 together at a remote location. At this time, it may be considered that the connection between the control unit 1000 and one or more laser irradiation devices 2000 is made in a wired manner such as power line communication, or may be made in a wireless manner such as Wifi, Lora, and Bluetooth.

3 is a configuration diagram showing a laser irradiation device according to an embodiment of the present invention.

The laser irradiation device 2000 includes a light source unit 2100 from which a laser beam is emitted, a reflector 2110 that converts the direction of a point beam from the light source unit 2100, and a lens unit that converts a point beam into a line beam. It may be configured to include (2120). Here, the point beam refers to a circular beam having a relatively small area focused on a predetermined surface or space and having a linear shape. The emitted beam is defined as a point beam. In addition, the line beam refers to a beam that can be formed on a surface or space in a straight line with a width of the other side (vertical) of which is significantly larger (more than 10 times) than that of either side (horizontal).

The light source unit 2100 may use a known laser light source, and the reflector 2110 may use a reflector capable of changing the direction of light, such as a mirror or a prism capable of adjusting an angle.

The combination or arrangement order of the reflector 2110 and the lens unit 2120 may be changed.

The point beam passing through the reflector 2110 has directionality and is diffused in the form of a line beam through the lens unit 2120. To this end, the lens unit 2120 may be formed in a fan shape. The lens unit 2120 may include a diffusion lens and a slit. It may be considered that the slit is composed of a predetermined collimator capable of controlling a beam width.

According to this configuration, the direction of the laser beam emitted from the light source unit 2100 is changed by the reflector 2110, and the shape and arrangement are changed by the lens unit 2120 to direct the line beam horizontally to the standby line and the stop line. And it can be irradiated according to the vertical form.

In order to change the position and shape of the display units, the reflector 2110 and the lens unit 2120 may have a predetermined control unit capable of adjusting the direction and position, and thus the reflector 2110 can adjust the direction of the reflector. A direction adjusting unit 2111 for controlling and a line beam adjusting unit 2121 for changing the direction of the lens unit 2120 may be included.

The direction control unit 2111 can perform a function of varying the irradiation direction of the point beam, and the lens unit 2120 is disposed in the path of the point beam having the directionality changed by the direction control unit 2111 to diffuse it. It may perform a function of determining the directionality of the line beam to be. Operations of the direction adjusting unit 2111 and the line beam adjusting unit 2121 may be controlled by the control unit 1000, and a known actuator including a motor and a driving system may be combined.

Additionally, the control unit 1000 can control the beam width of the line beam emitted from the lens unit 2120 with a collimator or slit at its rear end, which can be interlocked with the operation of the traffic light. For example, at the time of a walking signal, the beam width (traversing direction) of the first display unit 2010a may be increased, and the beam width may be decreased as the walking signal flickers or the time decreases to inform the floor intuitively. In addition, the beam width (road driving direction) of the second display unit 2010b may be increased, and the beam width may be reduced as the time of the walking signal becomes shorter, so that the vehicle may wait for departure.

In consideration of safety, dimming, blipping, or color change by operation of the light source unit may be applied for the certainty of visual recognition. However, a more efficient recognition scheme may be required to alert a running vehicle or pedestrian in an emergency situation. In an additional embodiment of the present invention, it is proposed that the display form is changed by the line beam adjusting unit 2121. That is, when the point beam is incident on the lens unit 2120, the direction in which the length of the line beam is formed is determined by the arc shape of the lens unit. The line beam adjustment unit 2121 may change the direction of the line beam by rotating the lens unit 2120, and as a result, the line beam may be rotated or vibrated on a floor surface such as a road surface, thereby increasing visual perception.

4 is a view showing an additional embodiment of the laser irradiation device of the present invention.

It is the same as the embodiment in that the light source unit, the reflector and the display unit are configured, and overlapping descriptions will be omitted.

In an additional embodiment of the present invention, the light source unit includes a plurality of light sources, and accordingly, the reflectors 2110a and 2110b and the lens units 2120a and 2120b are configured to correspond to the respective light sources.

Specifically, the light source unit includes a first light source 2101 and a second light source 2102, and a first reflector 2110a for converting a laser beam from the first light source 2101 and the first reflector 2110a. A first lens unit 2120a that diffuses a laser beam from the unit 2110a and emits a line beam may constitute one set. In addition, a second reflector 2110b for changing the direction of the laser beam from the second light source 2102 and a second lens unit for diffusing the laser beam from the second reflector 2110b to emit a line beam ( 2120b) may constitute one set.

As shown, each set is disposed on each optical path, and at least a portion of the beams may be parallel to each other.

A direction adjusting unit and a line beam adjusting unit may be configured in the reflectors 2110a and 2110b and the lens units 2120a and 2120b, respectively, as in the case of the exemplary embodiment.

The first light source 2101 and the second light source 2102 may emit laser beams of different properties, for example, produce laser beams of different colors. In addition, various selections such as sharpness of the beam, saturation, whether or not to blink may be applied.

As in the illustrated example, the display units 2010c and 2010d irradiated from the lens units 2120a and 2120b and projected onto the floor may overlap in whole or in part.

Referring to FIG. 2 , the first light source 2101 functions to recognize the display unit for pedestrians on the waiting line side of the crosswalk, and the second light source 2102 functions to recognize the display unit on the vehicle on the stop line side of the road. can do. For example, when the traffic light 300 is red, the first light source 2101 produces a red beam and the first reflector 2110a and the first lens unit 2120a display a red line beam on the standby line. (2010c), it is possible to prevent pedestrians from entering the crosswalk 101. In addition, the second light source 2102 produces a green beam, and the second reflector 2110b and the second lens unit 2120b display a green line beam on the stop line (2010d), indicating that the walking signal is not turned on. You can visually check the vehicle. Conversely, when the traffic light 300 is blue, the first light source 2101 produces a red beam, and the first reflector 2110a and the first lens unit 2120a change the irradiation direction to generate a red line beam at the stop line. By displaying (2010c), driving vehicles are induced to stop in front of the crosswalk. In addition, the second light source 2102 produces a green beam, and the second reflector 2110b and the second lens unit 2120b convert the direction to display a green line beam on the standby line (2010d) so that pedestrians can You can indicate that you can safely cross.

In some cases, one light source may emit two or more different types of light, and it may be considered to perform the above function in a manner in which the type of light is replaced by allowing display units to be formed at different positions, respectively.

5 is a conceptual diagram of a safety display device using a laser light source according to an additional concept of the present invention.

In the illustration, a curved road or an intersection is shown, and a plurality of crosswalks 101 are arranged close to each other. In this case, laser irradiation devices 2000 may be required corresponding to each waiting line and stop line, which means that a plurality of light sources should be provided. In the illustrated example, two crosswalks 101 are installed, and a total of four laser irradiation devices 2000 must be disposed because a stop line and a waiting line form one set for each part facing each crosswalk. In order to supply and control power for laser beam production, power and equipment are required separately, which leads to an increase in installation and management costs.

In the additional concept of the present invention, in order to solve this problem, a relay module 2300 is configured so that one laser irradiation device 2000 transmits a laser beam to a plurality of locations to make a display unit.

The relay module 2300 may include a relay-side reflector that converts the direction of a laser beam, more precisely, a point beam, and a relay-side lens that diffuses and converts a line beam. All cases where the display position and shape are varied by including a direction adjusting unit and a line beam adjusting unit may be considered.

In the illustrated embodiment, the laser irradiation device 2000 is installed on one side of the first crosswalk below, and the control unit 1000 is directly connected thereto. The laser irradiation device 2000 may selectively and/or additionally operate the first display unit 2010a1 on one side of the first crosswalk and the second display unit 2010b1 on one side of the first crosswalk on the first crosswalk. The display unit can be displayed on the other side of the first crosswalk in conjunction with the operation on the one side, which functions in the first relay module 2300a.

On the other side of the first crosswalk, the first relay module 2300a receives the first relay beam 2020a from the laser irradiation device 2000, and the first relay module 2300a displays the first display unit 2010a2 on the other side of the first crosswalk and the second on the other side of the first crosswalk. The display unit 2010b2 may be operated selectively and/or additionally.

In this way, based on the fact that the relay module 2300 is installed while looking at the laser irradiation device 2000 across one crosswalk, it can be considered that the laser irradiation device 2000 also operates at an adjacent crosswalk. There will be.

A second relay module 2300b is disposed on one side of the second crosswalk on the upper side, and the second relay module 2300b receives the second relay beam 2020b from the laser irradiation device 2000, and the second relay module 2300b crosses the second crosswalk The first display unit 2010a3 on one side and the second display unit 2010b3 on one side of the second crosswalk may be operated selectively and/or additionally.

In addition, the third relay module 2300c can operate in conjunction with the second relay module, and can operate together by receiving beams from the laser irradiation device 2000. By receiving the third relay beam 2020c, the third relay module 2300c can selectively and/or additionally operate the first display unit 2010a4 on the other side of the second crosswalk and the second display unit 2010b4 on the other side of the second crosswalk. there is.

In order to transmit the relay beam 2020, the laser irradiation device 2000 may include a plurality of light source units 2100 and a plurality of reflectors 2110 to control the direction of each relay beam 2020. In this regard, the above embodiments may be applied or applied mutatis mutandis.

Depending on the case, the laser irradiation device 2000 and the relay module 2300 may have pedestrian and vehicle detection sensors to perform an alarm operation separately from the operation of the traffic light 300 . For example, when a pedestrian crosses a jaywalk or a vehicle enters a pedestrian signal, the display unit may be individually controlled to light up or blink.

On the other hand, the control unit 1000 may include a verification unit (not shown) capable of verifying whether the laser beam reaches the correct position in each relay module 2300 and whether the display unit is formed as predicted. . The verification unit detours some images on the optical path to see if the relay beam 2020 input to the relay module 2300 can be focused on the correct position, and receives this as a verification signal so that the laser irradiation device 2000 side is the reflector. 2110 or the relay module 2300 may function to form an image at an accurate position by adjusting the reflector.

Additionally, while the relay beam 2020 in the form of a point beam is transmitted from the laser irradiation device 2000 to the relay module 2300, a portion of the diffusion is performed, and to control this, the input side of the reflector 2110 of the relay module 2300 A collimator (not shown) may be provided, and a slit for limiting the width of the line beam may be provided on the output side of the lens unit 2120 .

In addition, a management server (not shown) may be configured to centrally manage the locations of the plurality of control units 1000 . The management server can collect information and perform integrated control by assigning identification numbers to the control unit 1000 for a plurality of locations, and a relay network for data communication between the control unit 1000 and the management server is an Internet network or It is based on a communication network including a base station of a communication company providing mobile communication service, but is not necessarily limited thereto. For example, the relay network may include all network relay means conforming to TCP/IP (Transmission Control Protocol/Internet Protocol) communication protocols for efficient remote management, and as wireless Internet, WiBRO (Wireless BROadband internet) and WiMAX ( World Interoperability for Microwave Access). In addition, of course, it may be combined with the existing CCTV transmission network or configured as a part thereof.

The above-described safety display device using a laser light source of the present invention maximizes the safety of pedestrians or workers by intuitively and efficiently displaying information related to safety in a road or industrial environment by displaying a line beam on the floor of a road surface or sidewalk. can do.

In addition, since only one laser irradiation device can be operated in conjunction with relay modules to form a display unit in a plurality of locations, it is economical and central management is efficient.

In the above, the present invention has been described in detail based on examples and accompanying drawings. However, the scope of the present invention is not limited by the above embodiments and drawings, and the scope of the present invention will be limited only by the content described in the claims below.

101...crosswalk 300...traffic light
1000 ... control unit 2000 ... laser irradiation device
2010 ... display part 2010a ... first display part
2010b ... second display unit 2020 ... relay beam
2100 ... light source unit 2101 ... first light source
2102... second light source 2110... reflector
2111 ... direction control unit 2120 ... lens unit
2121 ... line beam adjustment unit
2300 ... relay module

Claims (5)

A laser irradiation device (2000) including one or more light source units through which point beams are emitted, and a reflector configured to change the direction of the point beams from the light source unit;
A relay module including a relay-side reflector that receives the point beam from the laser irradiation device and converts the direction thereof, and a relay-side lens unit that diffuses the point beam from the relay-side reflector in a selected direction and converts it into a line beam ( 2300);
A control unit 1000 that selects the type of laser beam emitted by being connected to the laser irradiation device and the relay module and determines the direction and position of the display unit on which the line beam is displayed;
The reflector has a direction control unit for adjusting the direction of the point beam,
The relay-side lens unit has a line beam adjusting unit for adjusting the direction and position of the line beam, and a safety display device using a laser light source.
According to claim 1,
The laser irradiation device and relay module,
A safety display device using a laser light source that determines the direction and location of the display according to the operation of the traffic light while displaying the display in interlock with the waiting line or stop line arranged with the crosswalk in between.
According to claim 1,
the reflector,
A safety display device using a plurality of laser light sources corresponding to each of the plurality of light source units.
According to claim 1,
The control unit,
A safety display device using a laser light source that verifies the position of a point beam incident to the relay module and controls the direction control unit so that the point beam is formed at the position of the relay-side reflector.
According to claim 1,
The relay side lens unit,
A safety display device using a laser light source that rotates or vibrates a display unit in which a line beam is formed by rotationally driving a line beam adjusting unit to increase visual perception.

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