KR200480205Y1 - Lighting apparatus for crosswalk - Google Patents

Abstract

An LED light projecting part including first to n-th LED floodlights (n is a positive integer of 2 or more) for providing illumination for the crosswalk under the control of the control module; And the pedestrian signal lamp, and illuminates the illuminance of the first LED floodlight, the nth LED floodlights, and the like at an optimal illuminance in a traffic inhibition period in which the red traffic light of the pedestrian signal light is lit, And a control module for controlling the illuminance of the first LED floodlight, the nth LED floodlight and the like to a normal illuminance higher than the optimum illuminance in a traffic permitting period in which the red traffic light of the A lighting device for a lighting system is disclosed.

Description

[0001] LIGHTING APPARATUS FOR CROSSWALK [0002]

More particularly, the present invention relates to a lighting apparatus for a pedestrian traffic light, in which a pedestrian signal lamp is illuminated with a red light, And a lighting device for a crosswalk capable of providing illumination with normal illuminance in a section.

Traffic accidents that occur on the crosswalk are increasing rapidly as the number of vehicles increases rapidly. In particular, traffic accidents tend to occur more frequently in the nighttime, because it is difficult for a driver driving a vehicle to identify a pedestrian crossing a pedestrian crossing or a pedestrian crossing. In order to solve such a problem, in order to enable a driver of a vehicle to more easily identify a pedestrian crossing a pedestrian crossing and a pedestrian crossing, a method for installing a pedestrian crossing lighting device for illuminating a pedestrian crossing around the pedestrian crossing has recently been proposed .

In particular, LED floodlighting is widely used as an illumination device for a crosswalk. BACKGROUND ART Light emitting diodes (LEDs) are semiconductors made of Ga (gallium), P (phosphorus), As (arsenic), indium (In), nitrogen (N) It has the characteristics of a diode and it emits red, green, and blue light when current is applied. It is widely used because it has a longer lifetime than a light bulb, has a quick response speed (a time until a current flows and a light is emitted), and has a small power consumption.

However, the lighting device for a pedestrian crossing according to the related art as described above has a problem that the red light of the pedestrian signal lamp is turned on (i.e., the vehicle passing signal) or the green signal light of the pedestrian signal is turned on There is a problem in that it is wasted without electric power because it is always kept in a lighted state, and it may interfere with the driver of the vehicle.

In order to solve such a problem, an operation state of a pedestrian signal lamp is detected, and when a green signal lamp of a pedestrian signal lamp is turned on, an LED floodlight or the like of a pedestrian's lighting device is turned on, A lighting device for a crosswalk capable of turning off the LED floodlight of a walkway lighting device has been proposed. However, in the case of such a pedestrian illumination device, since the LED floodlight of the pedestrian illumination device is turned on in the turn-off state when the green traffic light of the pedestrian traffic light is lit, suddenly, There is a problem that it interferes with the driving of the vehicle.

1. Korean Patent Registration No. 10-1117071 (Feb. 22, 2012) 2. Korean Patent Publication No. 10-2013-0013441 (Feb.

The present invention is intended to solve the problems of the prior art as described above.

The present invention provides illumination at an illuminance set to an optimal illuminance below a normal illuminance in a section where a red traffic light of a pedestrian traffic light installed on a pedestrian crossing illuminates and provides an illuminance that is less than a normal illuminance in a section where a green traffic light of a pedestrian traffic light is lit It is an object of the present invention to provide a lighting device for a crosswalk capable of providing illumination at a higher normal illuminance.

It is another object of the present invention to provide a lighting device for a crosswalk capable of efficiently providing safety lighting for a crosswalk using a plurality of LED floodlights etc. that illuminate different sections of a crosswalk .

In addition, the present invention also provides a method of continuously maintaining LED light, such as a LED flood light illuminating at least a waiting area waiting for a pedestrian among a plurality of LED floodlights illuminating different sections of a pedestrian crossing, Another object of the present invention is to provide a lighting device for a crosswalk, which enables a driver to recognize the presence of a pedestrian crossing and a pedestrian from afar.

In order to achieve the object of the present invention as described above and achieve the specific effect of the present invention described below, the characteristic configuration of the present invention is as follows.

According to an aspect of the present invention, there is provided an LED lighting device including: an LED light-transmitting portion including first to n-th LED floodlights (n is a positive integer of 2 or more) for providing illumination for a crosswalk under the control of a control module; And the pedestrian signal lamp, and illuminates the illuminance of the first LED floodlight, the nth LED floodlights, and the like at an optimal illuminance in a traffic inhibition period in which the red traffic light of the pedestrian signal light is lit, And a control module for controlling the illuminance of the first LED floodlight, the nth LED floodlight and the like to a normal illuminance higher than the optimum illuminance in a traffic permitting period in which the red traffic light of the Is provided.

Preferably, the first LED floodlight, the nth LED floodlight, and the like may be configured to illuminate different areas of the crosswalk, respectively.

Preferably, at least one LED floodlight of the first LED floodlight or the nth LED floodlight or the like may be configured to dim the waiting area where the pedestrian waits to cross the crosswalk.

Preferably, the control module may be configured to always control the illuminance of the at least one LED floodlight illuminating the waiting area to the normal illuminance regardless of whether the red traffic light is illuminated or not.

Preferably, the control module is connected to the power line of the red signal lamp, and may be configured to determine whether the red signal lamp is turned on or off according to whether the power of the red signal lamp is applied.

Preferably, the control module includes: a power supply unit for rectifying and stabilizing an AC voltage applied from an external AC power supply to generate a driving voltage, and supplying the driving voltage to the LED light-transmitting unit and the control unit; A traffic signal detector connected to the power line of the red signal lamp and outputting a sensing signal while the power is applied to the red signal lamp; A controller for outputting an optimum illuminance control signal while the sensing signal is inputted from the traffic signal detector and outputting a normal illuminance control signal while the sensing signal is not inputted from the traffic signal detector; And controlling the illuminance of the first LED floodlight, the nth LED floodlight, etc. according to the optimum illuminance control signal output from the controller to a predetermined optimum illuminance, And a dimming control unit for controlling the illuminance of the one LED light or the like to the set normal illuminance.

Preferably, the traffic signal detection unit and the control unit are connected using a first photocoupler, and the control unit and the light control unit are connected using a second photocoupler.

Preferably, the traffic signal detecting unit, the control unit, and the light control unit may be mounted on separate printed circuit boards.

The present invention provides illumination at an optimal illuminance set in a section where a red traffic light of a pedestrian traffic light installed at a pedestrian crossing is illuminated and illuminates at a normal illuminance higher than optimum illuminance in a section where a green traffic light of a pedestrian traffic light is lit, It is expected that the power consumption of the lighting device for the sidewalk can be reduced.

In addition, the present invention can be expected to provide an efficient safety lighting for a crosswalk using a plurality of LED floodlights that illuminate different sections of the crosswalk.

In addition, the present invention also provides a lighting system for a vehicle, which continuously maintains a LED illuminating light or the like illuminating at least a waiting area in which a pedestrian waits for crossing a crosswalk among a plurality of LED floodlights illuminating different sections of a crosswalk, It is possible to expect the effect that the driver can recognize the existence of the pedestrian crossing and the pedestrian from afar without obstructing the operation.

1 is an exemplary view schematically showing a crosswalk in which a crosswalk illumination device according to an embodiment of the present invention is installed.
2 is a schematic block diagram of a lighting apparatus for a crosswalk according to an embodiment of the present invention.
3 is a circuit diagram of a lighting device for a crosswalk according to an embodiment of the present invention.
4 is a timing chart for explaining an operation process of the lighting apparatus for a crosswalk according to an embodiment of the present invention.

DETAILED DESCRIPTION OF THE EMBODIMENTS Reference will now be made in detail to the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the like elements throughout. These embodiments are described in sufficient detail to enable those skilled in the art to practice the present invention. It should be understood that the various embodiments of the present invention are different, but need not be mutually exclusive. For example, the particular shapes, structures, and characteristics described herein may be implemented in other embodiments without departing from the spirit and scope of the invention in the context of an embodiment. It is also to be understood that the position or arrangement of the individual components within each disclosed embodiment may be varied without departing from the spirit and scope of the present invention. The following detailed description is, therefore, not to be taken in a limiting sense, and the scope of the present invention is to be limited only by the appended claims, along with the full scope of equivalents to which such claims are entitled, if properly explained. In the drawings, like reference numerals refer to the same or similar functions throughout the several views.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Reference will now be made in detail to the preferred embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the like elements throughout.

Fig. 1 is an exemplary view schematically showing a crosswalk in which a crosswalk illumination device according to an embodiment of the present invention is installed, Fig. 2 is a schematic configuration of a lighting device for a crosswalk according to an embodiment of the present invention Block diagram. Hereinafter, the configuration and function of the crosswalk illumination device 200 according to a preferred embodiment of the present invention will be described with reference to FIGS. 1 and 2. FIG.

1, the lighting apparatus 200 for a pedestrian crossing according to the present invention is installed in a signal lamp supporting stand 110 in which a pedestrian signal lamp 120 is installed to detect the operation state of the pedestrian signal lamp 120 , And to provide illumination for the pedestrian 100 at different light output levels according to the operational state of the pedestrian traffic light 120. [ Of course, according to the embodiment, the lighting device 200 for a pedestrian crossing according to the present invention may be installed in a separate pedestal (not shown) dedicated to a lighting device for pedestrian crossing, or installed together with a pedestal .

As shown in FIG. 2, according to the present invention, the lighting device 200 for a crosswalk can include a control module 210 and an LED light projecting part 260.

The LED projecting portion 260 of the pedestrian lighting device 200 according to one embodiment of the present invention is configured to provide a safety light around the pedestrian 100 under the control of the control module 210, (N is a positive integer of 2 or more) from the first LED floodlight to the nth LED floodlight. The lighting apparatus 200 for a crosswalk according to the embodiment shown in Figs. 1 and 2 is configured to include five LED floodlights from the first LED floodlight 270 to the fifth LED floodlight 278 It will be apparent to those skilled in the art that the number of LED floodlights and the like may be variously changed if necessary. Hereinafter, for the sake of explanation and understanding, as shown in Figs. 1 and 2, a lighting apparatus 200 for a crosswalk according to the present invention, which is based on a lighting apparatus 200 for a crosswalk including five LED floodlights, ) Will be described in detail.

More preferably, each of the first LED floodlight 270 to the fifth LED floodlight 278 according to the present invention can be configured to illuminate different areas of the crosswalk 100. 1, the first LED floodlight 270 may be configured to have a first light-directing angle 280 to illuminate a first area near the centerline of the pedestrian walkway 100. For example, have. Similarly, the second LED floodlight 272 may be configured to have a second light directing angle 282 to illuminate a second area that is located next to the first area. Similarly, the third LED floodlight 274 has a third light directing angle 284 to illuminate a third area, and a fourth LED floodlight 276 has a fourth light directing angle 284 for dimming the fourth area, (286). Further, the fifth LED floodlight 278 has a fifth light directing angle 288 for dimming the fifth area. At this time, the fifth area illuminated by the fifth LED floodlight 278 corresponds to a waiting area in which the pedestrian waits to cross the crosswalk 100. Thus, the fifth light directing angle 288 may be substantially perpendicular.

The control module 210 according to the present invention is connected to the pedestrian signal lamp 120 to detect the operation state of the pedestrian signal lamp 120 and to determine a section in which the red signal lamp of the pedestrian signal lamp 120 is lit The illuminance of the first LED floodlight 270 to the fifth LED floodlight 278 is controlled to a predetermined optimum illuminance ("first illuminance") to provide illumination, and the red traffic light of the pedestrian signal light 120 The illuminance of the first LED floodlight 270 to the fifth LED floodlight 278 is adjusted to the normal illuminance of the light output level higher than the optimum illuminance (hereinafter, referred to as " "Second Illumination") to provide illumination. In one embodiment, the optimal illumination may be about 30% of the light output level of normal illumination.

In addition, in another embodiment, the control module 210 according to the present invention controls the first through fourth LED light sources 270 through 276 in the same manner as described above, It is possible to always provide illumination with normal illumination regardless of the operation state of the pedestrian signal lamp 120 with respect to the fifth LED floodlight 278 of the second LED floodlight 278. That is, the control module 210 may be configured to control the fifth LED floodlight 278 to provide illumination with normal illumination even in a section where the red signal lamp of the pedestrian signal lamp 120 is lit. This is because, as described above, since the fifth LED light source 278 dims the waiting area of the pedestrian, even if the fifth LED light source 278 maintains the normal illuminance at all times, it does not interfere with the driver of the vehicle, So that the presence of the crosswalk 100 can be recognized.

In addition, according to the embodiment, the control module 210 according to the present invention is configured to provide illumination with different optimal illuminance for each of the first LED floodlight 270 to the fifth LED floodlight 278 in the traffic inhibition period . For example, in one embodiment, the first LED floodlight 270 provides illumination at a light output level of 15% and the second LED floodlight 272 provides illumination at a light output level of 20% The third LED floodlight 274 provides illumination at a light output level of 25%, the fourth LED floodlight 276 provides illumination at a light output level of 30%, and the fifth The LED floodlight 278 may be configured to provide illumination at a light output level of 50%. Of course, also in this embodiment, the fifth LED floodlight 278 may be configured to provide illumination at a light output level of 100%.

Also, in another embodiment, the first LED floodlight 270 provides illumination at a light output level of 30% and the second LED floodlight 272 provides illumination at a light output level of 25% The third LED floodlight 274 provides illumination at a light output level of 20%, the fourth LED floodlight 276 provides illumination at a light output level of 15%, the fifth LED floodlight 274 provides illumination Backlight 278 may be configured to provide illumination at a light output level of 100%. As described above, in the embodiments according to the present invention, when the first LED floodlight 270 to the fifth LED floodlight 278 are set at different light output levels May be configured to provide illumination for the crosswalk 100.

3 is a circuit diagram of a lighting device for a crosswalk according to an embodiment of the present invention. 2 to 3, the detailed configuration and function of the lighting apparatus 200 for a crosswalk according to the present invention will be described in detail.

2, the control module 210 according to an embodiment of the present invention may include a power supply unit 220, a traffic signal detection unit 230, and a control unit 240.

The power supply unit 220 is connected to an external commercial AC power source, and is configured to rectify and stabilize an input AC voltage to supply a stabilized direct current driving voltage. Since the power supply unit 220 itself uses known SMPS related technologies, detailed description will be omitted.

The traffic signal detector 230 is connected to the pedestrian signal lamp 120 to detect the operation state of the pedestrian signal lamp 120 and output a sensing signal corresponding to the detected operation state. More preferably, the traffic signal detector 230 according to an embodiment of the present invention can be configured to determine only the operation state of the red traffic light, without determining the operation state of the green traffic light of the pedestrian traffic light 120. This is because, in the case of the green signal lamp of the pedestrian signal lamp 120, it is configured to blink when the set time has elapsed after being turned on, and malfunction may occur when the operation state of the green signal lamp is used as a reference. Accordingly, the traffic signal detecting unit 230 according to the present invention is connected to a power line connected to a red signal lamp of the pedestrian signal lamp 120 to determine whether power is applied to the red signal lamp, and when the power is applied to the red signal lamp, And outputs a signal.

3, the traffic signal detector 230 includes a bridge diode BD1 for rectifying an AC voltage and outputting a rectified voltage, and a first photocoupler for receiving a rectified voltage supplied through the bridge diode BD1, (PC1). The light emitting unit of the first photocoupler PC1 emits light when a power source is applied to the red signal light and the light emitted from the light emitting unit of the first photocoupler PC1 is emitted from the first photocoupler PC1 of the control unit 240 And received via the light receiving unit. Accordingly, the control unit 240 can detect the operation state of the pedestrian signal lamp 120. [

The control unit 240 determines the operation state of the pedestrian signal lamp 120 according to the sensing signal outputted from the traffic signal detector 230 as described above and outputs the optimum illuminance control signal Or the normal illumination control signal to the dimming control unit. 3, the control unit 240 may be implemented using the control IC 245 and may be implemented by setting the resistance value of the variable resistor VR1 connected to the control IC 245, ) To the fourth LED floodlight 276 can be set. In the embodiment shown in FIG. 3, the first LED floodlight 270 to the fourth LED floodlight 276 are all controlled to the same light output level during the pass-through period, and the fifth LED floodlight 278 is always And is configured to emit light with normal illuminance. 3, the variable resistor VR1 for setting the optical output level is provided. However, the first LED floodlight 270 to the fifth floodlight 278 may have different light output levels , Or a plurality of variable resistors (VR1) for adjusting the optical output level may be included in a plurality of optical outputs Level may be set to be set. Meanwhile, the control signal output from the control unit 240 is input to the light control unit 250 through the second photocoupler PC2.

The dimming control unit 250 is configured to control the light output levels of the first LED floodlight 270 to the fifth LED floodlight 278 according to a control signal input from the controller 240. [ Since the light output of the LED is controlled according to the driving current for driving the LED according to the characteristics of the LED device, the light control unit 250 controls the first LED light source 270 to the fifth LED light source 278 The light output level of the first LED floodlight 270 to the fifth LED floodlight 278 can be controlled. 3, the first LED floodlight 270 to the fourth LED floodlight 276 all have the same light output level (for example, 30% light Output level), and the fifth LED floodlight 278 is always configured to emit light at normal illuminance (for example, 100% light output level). 3, the first to fourth LED floodlights 270 to 276 are connected to the dimming control unit 250, and the fifth LED floodlight 278 is connected to the dimming control unit 250. In the embodiment, (Not shown). 3, since the light output control for the fifth LED light floodlight 278 is not performed, the fifth LED floodlight 278 always lights at a light output level of 100% . Further, the first LED floodlight 270 to the fourth LED floodlight 276 are controlled to the same light output level by the dimming control unit 250. Accordingly, when the optimum illuminance control signal is inputted from the control unit 240, the dimming control unit 250 sets the first LED floodlight 270 to the fourth LED floodlight 276 to a predetermined optimum illuminance (for example, 30% When the normal illumination control signal is inputted from the control unit 240, the first LED floodlight 270 to the fourth LED floodlight 276 are controlled to a predetermined normal illuminance (e.g., The light output level of the first LED floodlight 270 to the fourth LED floodlight 276 is controlled by controlling the driving current according to the light intensity level of the first LED floodlights 270 (light output level of 100%).

3, the dimming control unit 250 according to the present invention controls the driving currents of the light receiving unit of the second photocoupler PC2, the first LED floodlight 270 to the fourth LED floodlight 276, (Composed of two FETs (FET1 and FET2)) for controlling the driving current control means. However, in another embodiment configured to control dimming at a different light output level for each of the first LED floodlight 270 to the fourth LED floodlight 276 for each pass-through period, the first LED floodlight < RTI ID = 0.0 > 270 to the fourth LED floodlight 276 may be included.

The traffic signal detector 230, the controller 240, and the light controller 250 may be mounted on a separate printed circuit board. The traffic signal detector 230 and the controller 240 1 through the first photocoupler PC1 and the control unit 240 and the light control unit 250 through the second photocoupler PC2. When the lighting device 200 for crosswalk is configured in this manner, it is possible to improve insulation between the printed circuit boards, to prevent electrical interference such as noise, and to send and receive signals in a contactless manner, An effect of minimizing the failure factor of the contact failure can be expected.

4 is a timing chart for explaining an operation process of the lighting apparatus for a crosswalk according to an embodiment of the present invention. More specifically, in the case of the timing diagram shown in Fig. 4, as described above with reference to Fig. 3, the fifth LED floodlight 278, which illuminates the atmospheric region of the pedestrian crossing 100, (270) to fourth LED floodlights (276) provide illumination at a light output level of 30% in the pass-through section 200 to the first LED light source 270 to the fourth LED light source 276. FIG. 4 is a waveform diagram of the power source applied to the green signal lamp of the pedestrian signal lamp 120. Fig. 4 (b) is a waveform diagram of the power source applied to the red signal lamp of the pedestrian signal lamp 120 (C) of FIG. 4 shows the light output levels of the first to fourth LED floodlights 270 to 276 synchronized with the power applied to the red signal lamp of the pedestrian signal lamp 120 Fig. As shown in FIG. 4, the first to fourth LED floodlights 276 to 276 of the pedestrian crossing illuminator 200 according to the present invention are powered by red light of the pedestrian signal lamp 120 Illumination is provided at a light output level of 30% in the passage-prohibited period to be applied, and illumination is provided at a light output level of 100% in a traffic-permitting period in which power is not applied to the red signal lamp of the pedestrian signal lamp 120. [ At the same time, as described above, the fifth LED floodlight 278 of the pedestrian circuit lighting device 200 according to the present invention always illuminates at an optical output level of 100% regardless of the operation state of the pedestrian signal lamp 120 . Therefore, the power consumption can be reduced by controlling the first LED floodlight 270 to the fourth LED floodlight 276 at a preset light output level during the traffic inhibition period, and the fifth LED floodlight 278 is always 100 The optical power output level can be maintained, so that it is possible to expect the effect that the driver can reliably recognize the presence of the pedestrian crossing 100 even without disturbing the driver of the vehicle.

Claims (8)

An LED light projecting part including first to n-th LED floodlights (n is a positive integer of 2 or more) for providing illumination for the crosswalk under the control of the control module;
The pedestrian signal lamp is illuminated with a red light of the pedestrian signal lamp is turned on, the illuminance of the first LED floodlight, the nth LED floodlights, And a control module for controlling the illuminance of the first LED floodlight, the nth LED floodlight and the like to a normal illuminance higher than the first illuminance in a traffic permission period in which the red traffic light of the traffic light is turned off,
The control module comprising:
A power supply unit for rectifying and stabilizing an AC voltage applied from an external AC power source to generate a driving voltage and supplying the driving voltage to the LED light projecting unit and the control unit;
A traffic signal detector connected to the power line of the red signal lamp and outputting a sensing signal while the power is applied to the red signal lamp;
A controller for outputting a first illuminance control signal while the sensing signal is being input from the traffic signal detector and outputting a normal illuminance control signal while the sensing signal is not being input from the traffic signal detector; And
Wherein the controller controls the illuminance of the first LED floodlight, the nth LED floodlights, and the like to a first illuminance set according to the first illuminance control signal output from the controller, And a dimming control unit for controlling the illuminance of the first LED floodlight, the nth LED floodlight, and the like to a predetermined normal illuminance,
Wherein the traffic signal detecting unit, the control unit, and the light control unit are mounted on separate printed circuit boards. The method according to claim 1,
And said first LED floodlight or said nth LED floodlight illuminates different areas of said pedestrian crosswalk. The method according to claim 1,
Wherein at least one of the first LED floodlight, the nth LED floodlights, and the like illuminates an atmospheric region in which a pedestrian waits to cross the pedestrian crossing. The method of claim 3,
Wherein the control module always controls the illuminance of the at least one LED floodlight illuminating the waiting area to the normal illuminance irrespective of whether the red traffic light is illuminated or not. The method according to claim 1,
Wherein the control module is connected to the power line of the red signal lamp and determines whether the red signal lamp is turned on or off according to whether or not the power of the red signal lamp is applied. delete The method according to claim 1,
Wherein the traffic signal detection unit and the control unit are connected using a first photocoupler, and the control unit and the light control unit are connected using a second photocoupler. delete

Images