KR20140118223A - Crosswalk lighting devices - Google Patents

Crosswalk lighting devices Download PDF

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Publication number
KR20140118223A
KR20140118223A KR1020130033754A KR20130033754A KR20140118223A KR 20140118223 A KR20140118223 A KR 20140118223A KR 1020130033754 A KR1020130033754 A KR 1020130033754A KR 20130033754 A KR20130033754 A KR 20130033754A KR 20140118223 A KR20140118223 A KR 20140118223A
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KR
South Korea
Prior art keywords
light emitting
light
emitting portion
unit
angle
Prior art date
Application number
KR1020130033754A
Other languages
Korean (ko)
Inventor
곽준섭
김형진
Original Assignee
인텔렉추얼디스커버리 주식회사
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
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Priority to KR1020130033754A priority Critical patent/KR20140118223A/en
Publication of KR20140118223A publication Critical patent/KR20140118223A/en

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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21K—NON-ELECTRIC LIGHT SOURCES USING LUMINESCENCE; LIGHT SOURCES USING ELECTROCHEMILUMINESCENCE; LIGHT SOURCES USING CHARGES OF COMBUSTIBLE MATERIAL; LIGHT SOURCES USING SEMICONDUCTOR DEVICES AS LIGHT-GENERATING ELEMENTS; LIGHT SOURCES NOT OTHERWISE PROVIDED FOR
    • F21K9/00—Light sources using semiconductor devices as light-generating elements, e.g. using light-emitting diodes [LED] or lasers
    • F21K9/60—Optical arrangements integrated in the light source, e.g. for improving the colour rendering index or the light extraction
    • F21K9/68—Details of reflectors forming part of the light source
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S8/00—Lighting devices intended for fixed installation
    • F21S8/08—Lighting devices intended for fixed installation with a standard
    • F21S8/085—Lighting devices intended for fixed installation with a standard of high-built type, e.g. street light
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
    • F21V14/00—Controlling the distribution of the light emitted by adjustment of elements
    • F21V14/04—Controlling the distribution of the light emitted by adjustment of elements by movement of reflectors
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21W—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO USES OR APPLICATIONS OF LIGHTING DEVICES OR SYSTEMS
    • F21W2111/00—Use or application of lighting devices or systems for signalling, marking or indicating, not provided for in codes F21W2102/00 – F21W2107/00
    • F21W2111/02—Use or application of lighting devices or systems for signalling, marking or indicating, not provided for in codes F21W2102/00 – F21W2107/00 for roads, paths or the like
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21Y—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO THE FORM OR THE KIND OF THE LIGHT SOURCES OR OF THE COLOUR OF THE LIGHT EMITTED
    • F21Y2115/00—Light-generating elements of semiconductor light sources
    • F21Y2115/10—Light-emitting diodes [LED]
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S362/00—Illumination
    • Y10S362/80—Light emitting diode

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Optics & Photonics (AREA)
  • Non-Portable Lighting Devices Or Systems Thereof (AREA)

Abstract

A pedestrian crossing illuminator is disclosed which allows pedestrians to illuminate from the delivery of a pedestrian crossing to the road so as to be easily identified, and indirect lighting by means of a reflector is used so as not to be dimmed directly to the pedestrian.
The present invention relates to a light emitting device comprising a first light emitting portion extending from a lamppole to a road and arranged to emit light upward; A second light emitting portion rotatably coupled to one end of the first light emitting portion and arranged to emit light upward; And a reflector disposed at an upper end of the first light emitting portion and reflecting the light emitted from the first light emitting portion and the second light emitting portion so as to indirectly dim the light guide and the road, A crosswalk illumination device is provided that allows a driver of a vehicle to easily recognize a crosswalk even when the clock is poor or when approaching at a high speed.

Description

{CROSSWALK LIGHTING DEVICES}

The present invention relates to a crosswalk illuminator, and more particularly, to a crosswalk illuminator capable of uniformly illuminating illumination from a roadway where a crosswalk is drawn to a roadway.

In general, a pedestrian crossing is displayed on the road surface so that the pedestrian can cross the road safely on the road where the car is traveling, and the pedestrian traffic light is installed on the pedestrian crossing pedestrian crossing, To secure the time to cross the road safely.

On the other hand, the street including the area surrounding the pedestrian crossing is provided with a street light which is turned on at sunset and unlit during the day, so that a vehicle traveling on the road at night and a pedestrian crossing the road can safely run and walk.

However, since a general streetlight as described above should not confuse a driver's view of a driving car, its brightness is relatively dark, so that a person or an object at a close distance can be identified. However, This is not easy.

As an example of the prior art for solving the above-mentioned problems, there has been proposed a method of using a signal lamp pillar having a light for pedestrian protection as shown in Fig. 1, Fig. 4, Fig. 8, etc. of Korean Utility Model Registration Application No. 20-2000-6419 Assembly 'has been provided. This technique is intended to secure the safety of pedestrians by illuminating the crosswalk at night by attaching an illumination light for illuminating a pedestrian crossing to a signal light for vehicle control installed at a position adjacent to the pedestrian crossing. However, such a prior art light fixture with a light fixture requires that the angle of the light fixture provided to illuminate the crosswalk be adjusted in view of the fact that the traffic light is installed at a position substantially spaced from the crosswalk in general, The light emitted from the illuminating lamp installed so as to have a slope may interfere with the visibility of the driver to threaten safe driving. In addition, this technique can be applied only to the crosswalk where the traffic light is installed.

That is, in the case of a road where a pedestrian crossing for pedestrians is displayed on the road but the number of pedestrians is not so large and the traffic volume of the vehicle is not large, and the traffic lights for vehicles and pedestrians are not installed, It is difficult to recognize the presence or absence of a crosswalk in front of the vehicle, which may cause a human accident that can not be reversed if the vehicle travels at a high speed.

SUMMARY OF THE INVENTION It is therefore an object of the present invention to provide a pedestrian crossing lighting system which enables easy identification of pedestrians crossing from the delivery of a pedestrian crossing to a road and indirect lighting using a reflector, Device.

According to an aspect of the present invention, there is provided a crosswalk illuminator comprising: a first light emitting unit extending from a lamppole to a road and arranged to emit light upward; A second light emitting portion rotatably coupled to one end of the first light emitting portion and arranged to emit light upward; And a reflector disposed at an upper end of the first light emitting unit and reflecting the light emitted from the first light emitting unit and the second light emitting unit to indirectly dim the light emitted from the first light emitting unit and the second light emitting unit.

At this time, the reflection part is installed to have a predetermined angle with respect to the ground surface, receives light of the first light emitting part installed horizontally to the ground and reflects the light to the road side, receives light of the second light emitting part having a certain angle with the first light emitting part, As shown in FIG. For example, the simulation results show that the reflector has an angle of 10 to 15 degrees with respect to the paper surface, the angle between the first light emitting portion and the second light emitting portion is 95 to 105 degrees, When the distance between the light emitting part and the reflection part is 30 cm, the light dimming effect is the best.

Meanwhile, the output of the first light emitting unit may be greater than the output of the second light emitting unit, so that the reflected light has a constant illuminance. In addition, since the angle of reflection of light reflected toward the road must be large, the lens emission angle of the first light emission unit can be set larger than the LED emission angle of the second light emission unit.

The crosswalk lighting device according to the present invention is installed on a pedestrian crossing and can illuminate both the roadway and the roadway so that the pedestrian can secure a clock from the road to the road. If the driver of the vehicle is bad at night or bad weather, The crosswalk can be easily recognized even when approaching at a high speed, so that an accident that may occur in the crosswalk can be prevented.

In addition, by using the indirect lighting using the reflector, there is an advantage that the pedestrian can easily pass the crosswalk by reducing the glare caused by the light that the pedestrian can feel.

Further, there is an advantage that the design change can be facilitated so that the angle of the two light emitting units rotatably installed and the angle of the reflection unit can be adjusted to have the optimum illuminance and the uniform illuminance.

The first light emitting unit may further include a first connection unit connecting the lamp unit and the first light emitting unit and adjusting a position of the first light emitting unit. For example, the first connection portion may be rotated around two axes to adjust the position of the first light emitting portion. The lighting unit may further include a second connection unit connecting between the lamp post and the reflection unit and adjusting the position of the reflection unit. For example, the second connection portion may be rotated around two axes to adjust the position of the reflection portion.

The control unit may further include a controller for individually controlling the first and second light emitting units. The controller may operate in conjunction with a traffic light to illuminate the vehicle with a high luminance while the signal lamp is turned on.

BRIEF DESCRIPTION OF THE DRAWINGS Figure 1 shows a schematic configuration of a crosswalk illumination device according to an embodiment of the present invention.
2 schematically illustrates the operation of a crosswalk illumination device according to an embodiment of the present invention.
3 is a graph showing a simulation result when illuminance is measured while changing the angle between the first light emitting portion and the second light emitting portion from 95 ㅀ to 135 설정 while the angle of the reflection portion is set horizontally with the ground.
4 is a graph showing the simulation results when illuminance is measured while changing the angle between the first light emitting portion and the second light emitting portion from 95 ㅀ to 135 설정. .
5 is a graph showing the simulation result when illuminance is measured while changing the angle between the first light emitting portion and the second light emitting portion from 95 ㅀ to 135 를, Respectively.
6 is a graph showing simulation results when the illuminance is measured while changing the angle between the first light emitting portion and the second light emitting portion from 95 ㅀ to 135 설정, .
7 is a graph showing the simulation results when the illuminance is measured while changing the angle between the first light emitting portion and the second light emitting portion from 95 ㅀ to 135 설정. .
8 is a graph illustrating the simulation result when the illuminance is measured while changing the angle between the first light emitting portion and the second light emitting portion from 95 to 135 설정, Respectively.
9 is a graph showing simulation results when the illuminance is measured while changing the angle between the first light emitting portion and the second light emitting portion from 95 ㅀ to 135 설정, .

The present invention is capable of various modifications and various forms, and specific embodiments are illustrated in the drawings and described in detail in the text. It should be understood, however, that the invention is not intended to be limited to the particular forms disclosed, but includes all modifications, equivalents, and alternatives falling within the spirit and scope of the invention.

The terms first, second, etc. may be used to describe various elements, but the elements should not be limited by the terms. The terms are used only for the purpose of distinguishing one component from another. For example, without departing from the scope of the present invention, the first component may be referred to as a second component, and similarly, the second component may also be referred to as a first component.

The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. The singular expressions include plural expressions unless the context clearly dictates otherwise. In the present application, the terms "comprising" or "having ", and the like, are intended to specify the presence of stated features, integers, steps, operations, elements, parts, or combinations thereof, But do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, parts, or combinations thereof.

Unless otherwise defined, all terms used herein, including technical or scientific terms, have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs.

Terms such as those defined in commonly used dictionaries are to be interpreted as having a meaning consistent with the meaning in the context of the relevant art and are to be interpreted as ideal or overly formal in meaning unless explicitly defined in the present application Do not.

BRIEF DESCRIPTION OF THE DRAWINGS Figure 1 shows a schematic configuration of a crosswalk illumination device according to an embodiment of the present invention.

Referring to FIG. 1, a crosswalk lighting apparatus according to an exemplary embodiment of the present invention may include a first light emitting unit 110, a second light emitting unit 120, and a reflection unit 200.

The first light emitting unit 110 is installed to extend from the lamp pillar 300 toward the road and is arranged to emit light upward. The second light emitting unit 120 is rotatably coupled to one end of the first light emitting unit 110 and is arranged to emit light upward. The angle between the first light emitting part 110 and the second light emitting part 120 can be adjusted by the user.

The reflector 200 reflects light emitted from the first and second light emitting units 110 and 120 and indirectly dims the light emitted from the first and second light emitting units 110 and 120 . For example, the reflector 200 is installed at a predetermined angle (b) so that the reflector 200 is higher on the road side from the road side on the road surface. At this time, the first light emitting unit 110 is installed horizontally with the ground, and the light emitted from the first light emitting unit 110 is reflected by the reflection unit 200 to dim the road side. The second light emitting unit 120 is deflected to form a certain angle a with the first light emitting unit 110 so that the light emitted from the second light emitting unit 120 is reflected by the reflection unit 200 India will be delighted.

The first light emitting portion 110 for illuminating the road side has a large dimming area and the second light emitting portion 120 for illuminating the lead side has a dimming area of the dimming area by the first light emitting portion . Therefore, the output of the first light emitting unit 110 may be configured to be larger than the output of the second light emitting unit 120 in order to uniform the overall illuminance of the crosswalk. That is, the output of the first light emitting unit 110, which needs to be illuminated over a wide range, is increased, and the output of the second light emitting unit 120, which needs to illuminate a narrow area, is configured to be smaller than that of the first light emitting unit 110, It is possible to uniformly adjust the illuminance in the direction of the sideward and the direction of the road.

In addition, in dimming the road side, it is preferable that the LED lens of the first light emitting portion 110 has a large light emission angle because of a large dim range. On the other hand, it is preferable to use the LED lens of the second light emitting portion 120 having an angle smaller than the light emitting angle of the LED lens of the first light emitting portion 110, Do.

In addition, the inclination of the reflector 200 can be adjusted so that the position where the light is dimmed can be adjusted. For example, the angle of rotation can be adjusted by being rotatably coupled to a column of street lamps. As another example, it may be hinged to be rotatable at the center of the reflection portion, and may be rotated about the center of the reflection portion to form a tilt.

Meanwhile, the reflector 200 may be vertically movable to adjust the gap between the reflector 200 and the first light emitting unit 200. The dimming range can be changed by adjusting the interval between the reflective portion 200 and the first light emitting portion 110 so that light can be uniformly illuminated over the entire crosswalk according to the width of the road on which the pedestrian crossing is installed.

A first connection part 130 connecting between the lamppole and the first light emitting part and adjusting the position of the first light emitting part, and a second connection part 130 connecting between the lamppole and the reflection part, And a second connection unit 230 that can adjust the second connection unit 230. The first connection part 130 may be rotated about two axes to adjust the position of the first light emitting part, and the second connection part 230 may be rotated around two axes to adjust the position of the reflection part. As described above, by controlling the degree of rotation of the first connection part 130 and the second connection part 230, the direction and the illuminance range of the illumination can be easily controlled by adjusting the position.

The control unit may further include a controller for individually controlling the first and second light emitting units. It is usually used to illuminate only in India, but it is possible to save electric energy by making it possible to illuminate the road as soon as the traffic lights are turned on. In addition, since the driver of the vehicle is aware that the traffic light is turned on when the driver is dimmed toward the road, the occurrence of an accident can be reduced. Meanwhile, the control unit may operate in conjunction with a traffic light to illuminate the vehicle at a high luminance while the signal lamp is turned on. This allows the driver to recognize that there is a pedestrian crossing, and when the traffic lights are turned on, the pedestrian crossing can be clearly seen by setting the elevation of the pedestrian crossing so as to raise the output. Can be reduced.

Hereinafter, operations and effects of the present invention will be described with reference to the drawings.

2 is a schematic view of the operation of a crosswalk illumination device according to an embodiment of the present invention.

Referring to the drawing, the reflector 200 is inclined such that its lower end is directed toward the road 20. The first light emitting unit 110 is disposed at the lower end of the reflector 200 and is disposed horizontally with the ground. The second light emitting unit 120 is installed at a predetermined angle with the first light emitting unit 110.

The range in which light is reflected and dimmed by the illumination device installed as described above is shown in the figure.

As shown in the figure, the light emitted from the first light emitting unit 110 is reflected by the reflection unit to illuminate the road 20 side. In this case, since the first light emitting unit 110 needs to transmit light far away for a wide range of dimming, an LED lens having a large light emitting angle can be used and a high output LED can be used. On the contrary, the light emitted from the second light emitting unit 120 is reflected by the reflection unit 200, and the light emitted from the second light emitting unit 120 is dimmed. This is because the range of the light illuminated by the second light emitting unit 120 is relatively smaller than the range of the light illuminated by the first light emitting unit 110, And an LED having an output smaller than that of the first light emitting portion can be used.

Hereinafter, a process of finding an optimal condition for achieving a uniform illuminance throughout the entire crosswalk will be described, which is an embodiment of the present invention.

FIGS. 3 to 9 show simulation results according to various conditions of the crosswalk lighting apparatus, which is one embodiment of the present invention.

Referring to the drawings, a simulation result for finding an optimum condition can be seen on a crosswalk in a city area, which is a four-lane road reference.

The conditions for the simulation were such that the distance between the first light emitting portion and the reflecting portion was fixed to 30 cm and the uniformity of the illuminance was measured while adjusting the angle between the first light emitting portion and the second light emitting portion according to the inclination of the reflecting portion.

3 is a graph showing a simulation result when illuminance is measured while changing the angle between the first light emitting portion and the second light emitting portion from 95 ㅀ to 135 설정 while the angle of the reflection portion is set horizontally with the ground.

4 is a graph showing the simulation results when illuminance is measured while changing the angle between the first light emitting portion and the second light emitting portion from 95 ㅀ to 135 설정. .

5 is a graph showing the simulation result when the illuminance is measured while changing the angle between the first light emitting portion and the second light emitting portion from 95 to 135 설정, .

6 is a graph showing simulation results when the illuminance is measured while changing the angle between the first light emitting portion and the second light emitting portion from 95 ㅀ to 135 설정, .

7 is a graph showing the simulation results when the illuminance is measured while changing the angle between the first light emitting portion and the second light emitting portion from 95 ㅀ to 135 설정. .

8 is a graph illustrating the simulation result when the illuminance is measured while changing the angle between the first light emitting portion and the second light emitting portion from 95 to 135 설정, Respectively.

9 is a graph showing simulation results when the illuminance is measured while changing the angle between the first light emitting portion and the second light emitting portion from 95 ㅀ to 135 설정, .

The results of the simulation show the optimum illuminance distribution at the crosswalk at the angles between the light emitting portions 28 to 36 and the reflection portion as a result of the simulation shown in FIG. In addition, the simulation results shown in FIG. 5 show the optimum illuminance distribution in the crosswalk and in the sidewalk at the angle between the light emitting portions 19 to 27 and the reflection angle.

Therefore, it is preferable to use the angle conditions shown in FIG. 5 and FIG. 6, but it is preferable that the crosswalk and the guide have a uniform roughness rather than a roughness distribution focused on the crosswalk. Therefore, according to the simulation result of FIG. 5, it is preferable that the angle of the reflection portion be 10 占 to 15 占 with the ground. On the other hand, the angle between the first light emitting portion and the second light emitting portion is preferably in the range of 95 to 105..

As described above, the crosswalk lighting device according to the present invention illuminates both the roadway and the crosswalk to provide a pedestrian's watch, and when the driver of the vehicle has a bad clock or a state of approaching at a high speed There is an advantage that the crosswalk can be easily recognized.

In addition, by using the indirect lighting, it is possible to reduce the ease of glare caused by the light that the pedestrian can feel.

Further, the angle of the two light-emitting portions and the angle of the reflecting portion that are rotatably installed can be adjusted, and the optimum illuminance environment according to the width of the road can be easily designed and changed.

While the present invention has been described in connection with what is presently considered to be practical and exemplary embodiments, it is to be understood that the invention is not limited to the disclosed embodiments, but, on the contrary, It will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention as defined by the appended claims.

10: India 20: Road
110: first light emitting portion 120: second light emitting portion
130: first connection part 200:
230: second connection part 300: street light

Claims (11)

A first light emitting part extending from the lamppole toward the road and arranged to emit light upward;
A second light emitting portion rotatably coupled to one end of the first light emitting portion and arranged to emit light upward; And
And a reflector disposed at an upper end of the first light emitting unit and reflecting the light emitted from the first light emitting unit and the second light emitting unit to indirectly dim the light guide and the road. The method according to claim 1,
The reflector is installed to have a predetermined angle with respect to the ground,
The light emitted from the first light emitting portion provided horizontally to the ground is reflected to the road side,
And reflects the light of the second light emitting portion having a certain angle with the first light emitting portion to reflect the light to the lead-in side. 3. The method of claim 2,
The reflector is installed so as to have an angle of 10 to 15 degrees with respect to the ground,
Wherein an angle between the first light-emitting portion and the second light-emitting portion is 95 to 105 degrees,
And the interval between the first light emitting portion and the reflection portion is 30 cm. The method according to claim 1,
Wherein an output of the first light emitting portion is larger than an output of the second light emitting portion. The method according to claim 1,
Wherein the lens emitting angle of the first light emitting portion is larger than the LED lens emitting angle of the second light emitting portion. The method according to claim 1,
Further comprising a first connection unit connecting the lamp unit and the first light emitting unit and adjusting a position of the first light emitting unit. The method according to claim 6,
Wherein the first connection portion is rotated about two axes to adjust the position of the first light emitting portion. The method according to claim 1,
Further comprising a second connection unit connecting between the lamppole and the reflection unit and adjusting a position of the reflection unit. 9. The method of claim 8,
And the second connecting portion is rotated about two axes to adjust the position of the reflection portion. The method according to claim 1,
Further comprising a control unit for individually controlling the first and second light emitting units. 11. The method of claim 10,
Wherein the control unit is operable in conjunction with a traffic light so that the traffic light can be illuminated with a high luminance by increasing the output while the traffic light is turned on.
KR1020130033754A 2013-03-28 2013-03-28 Crosswalk lighting devices KR20140118223A (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20200129387A (en) * 2019-05-08 2020-11-18 신재훈 Pedestrian safety system on the crosswalk

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20200129387A (en) * 2019-05-08 2020-11-18 신재훈 Pedestrian safety system on the crosswalk

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