KR101723669B1 - Lighting Apparatus for Pedestrian Crossing Zone - Google Patents

Abstract

The present invention relates to a lighting device for a crosswalk, capable of improving a structure to emit an equal amount of light to a crosswalk by having the same light source size regardless of a width of the crosswalk by changeably controlling a beam emission range of a lens combined with a front side of a plurality of LED lamps vertically placed in the lighting device. According to the present invention, the lighting device comprises: supports erected on both sides of a crosswalk; a lamp case placed on an upper part of the supports; an inner frame placed in the lamp case; a plurality of LED lamps vertically placed in an inner frame; and a lens including a plurality of lens parts combined with the front side of the LED lamps to be detachable to individually control an emission angle of a beam emitted from the LED lamps.

Description

[0001] Lighting Apparatus for Pedestrian Crossing Zone [

In particular, the present invention relates to a lighting apparatus for a crosswalk, and more particularly, to a lighting apparatus for a crosswalk, in particular, to an illumination lamp disposed at an oblique angle on an upper part of a column, The present invention relates to a lighting device for a crosswalk, the structure of which is improved so as to be uniformly illuminated regardless of the width of the crosswalk.

In general, a crosswalk is installed on a road so that a pedestrian can safely cross the road. In order to inform that there is a crosswalk at night, a warning light is turned on or a crosswalk is illuminated, So that the driver is alerted to safety.

In recent years, various devices have been developed and patented as a method of attracting attention to the driver by illuminating the crosswalk at night. Among them, the utility model registration No. 20-0289540 entitled " Pedestrian Warning and Lighting Device " .03), a post was formed on the edge of the crosswalk, a transverse bar was installed on the post in a direction parallel to the crosswalk, and a crosswalk was provided by illuminating the crosswalk with a plurality of reflectors. However, However, although the light may be damaged or detached due to strong winds or typhoons, it may be a considerable risk to the pedestrian. Also, although the reflector is provided to prevent glare and adjust the direction of illumination, It is installed from top to bottom so that the lights are lit It is difficult for the driver to perceive the surrounding traffic light or to recognize the person or object on the pedestrian crossing, and also the expensive equipment is required for the maintenance, and the repair work interrupts the traffic flow by blocking the center of the traveling road .

Other prior art related to the existing pedestrian crossing illumination device is disclosed in Korean Patent Registration No. 10-1275514 entitled " Crossing Sidewalk Lighting Device "(Registered on May 31, 2013) A substrate provided at predetermined intervals; A frame formed in a bar shape and having a guide portion vertically formed on both edges along the longitudinal direction and fixing the substrate through a guide groove formed inside each of the guide portions; And a reflection plate which is formed by connecting a plurality of reflection shafts in a line and which is tightly fixed to a surface of the substrate on which the LED is mounted by a guide portion of the frame, Grooves are formed, and different reflection gradients are formed in the forward direction, the backward direction and the lateral direction, respectively, along the longitudinal direction of the frame.

In addition, the above-mentioned conventional crosswalk lighting apparatuses use the same kind of lamp regardless of the size and width of the crosswalk, so that when the width of the crosswalk is small, the amount of light emitted by the lighting apparatus is more than necessary, On the other hand, when the width of the crosswalk is large, there is a problem that the lighting device can not reach the light, and since the lamp is fixed, there is a problem in that the direction of light irradiation can not be appropriately adjusted according to the situation in accordance with the size of the crosswalk .

However, in the existing pedestrian crossing lighting apparatus, the angle of the beam projected to the side of the crosswalk differs depending on the arrangement column angle of each LED lamp of the illumination lamp disposed at an inclined angle to the upper part of the column, The light intensity is different from each other, and the space where the light is not reflected by the part of the ground where the pedestrian crossing is displayed occurs, so that the pedestrian who is walking at night can not be properly identified, .

Registered utility model No. 20-0289540 "Pedestrian warning and lighting device" (registered on September 03, 2002) Korean Registered Patent No. 10-1275514 entitled " Lighting Device for Crosswalk "(Registered on March 31, 2013)

SUMMARY OF THE INVENTION The present invention has been made in view of the above-described problems, and its object is to provide a lighting apparatus for a crosswalk which is capable of varying a beam irradiation range of a lens coupled to a front surface of an LED lamp, And a light source unit having the same size regardless of a width of a crosswalk of the ground so that the crosswalk can be illuminated with a uniform illuminance.

According to an aspect of the present invention, there is provided a lighting system comprising: a lighting case disposed at an inclined angle at an upper portion of a support post rising on a crosswalk; An inner frame provided in the illumination lamp case; An LED lamp disposed on the inner frame in a plurality of horizontal and vertical directions; And an irradiation angle of the beam irradiated from the LED lamp arranged in the plurality of transverses is detachably attached to the front surface of the LED lamp so as to be smaller than a beam irradiation angle of the third lens unit disposed on the lower transverse axis And a second lens unit having a first lens unit and a second lens unit, the lens unit including a first lens unit, a second lens unit, and a first lens unit arranged on the upper transverse band so as to be irradiated with a beam smaller than the beam irradiation angle of the second lens unit, A circumferential surface formed to be inclined at an oblique angle so that the circumference of the outer circumferential surface has a total curvature and a circumferential surface which is symmetrical to the first accommodating recess so as to concentrate the light emitted from the LED lamp, And an upper surface formed in a plane, and the second lens unit is configured to accommodate the LED lamp in a lower inner side, A second receiving groove formed so as to have a convex shape in a downwardly convex shape, a curved surface formed to be bent at an inclined angle so as to have a total curvature around the outer peripheral surface, and a top surface formed in a convex shape upward, The third lens unit includes a third receiving groove, which is formed inside the lower portion to receive the LED lamp and has a curvature of a convex shape on an upper surface thereof, and a third inclined surface and a flat surface that are formed to be inclined at an inclined angle so as to have a total curvature And each of the first, second and third lens units is irradiated with a light source of the same size on the crosswalk.

The inner frame has a plurality of transverse guide rails for detachably coupling the first, second and third lens units.

The first lens unit and the second lens unit are integrally connected by a first connection unit, and the second lens unit and the third lens unit are integrally connected by a second connection unit.

And a total radius of curvature of curvature with respect to a peripheral surface of the first lens unit is R36.1 to R37.1 mm.

The radius of curvature of the second lens part with respect to the upper surface of the second receiving groove is from R2.3 to R3.3 mm, the radius of total reflection curvature with respect to the curved surface is R43.5 to R44.5 mm and the radius of curvature with respect to the upper surface is R59. 0 to R60.0 mm.

The radius of curvature of the third lens portion with respect to the upper surface of the third receiving groove is R4.5 to R5.5 mm, and the radius of total reflection curvature with respect to the inclined surface is R135.8 to R136.8 mm.

According to the present invention, light generated from an LED lamp is variably converged according to an illumination angle of an illumination device illuminating the crosswalk, thereby illuminating the lightwave with the same size irrespective of the width of the crosswalk, It is possible to improve the discrimination of the pedestrian and the lane at night.

BRIEF DESCRIPTION OF THE DRAWINGS Fig. 1 is a configuration diagram showing a configuration of a lighting apparatus for a crosswalk according to the present invention; Fig.
2 is a front view of the illumination device of the present invention.
3 is a perspective view of the lens of the present invention.
4 is a sectional view of the first lens unit of the present invention.
5 is a sectional view of the second lens portion of the present invention.
6 is a sectional view of the third lens unit of the present invention.
Figs. 7, 8 and 9 are schematic views showing irradiation angles of the first, second and third lens portions of the present invention. Fig.
10 is a front view showing a modified embodiment of the lens in which the first, second and third lens units of the present invention are arranged in a plurality of lateral lines.
11 is a view showing brightness of light according to an irradiation angle and an illumination angle of a conventional LED lamp.
12 is a view showing the brightness of light according to the irradiation angle and the illumination angle of the lens of the present invention.
13 is a plan view showing a state in which a light source of a lighting apparatus of the present invention is irradiated on a crosswalk.

1 to 13, the lighting apparatus for a pedestrian crossing according to the present invention comprises a column 20 installed to stand on both left and right sides of a crosswalk, An inner frame 14 disposed in the lamp case 12; an LED lamp 50 disposed in the inner frame 14 in a plurality of horizontal and vertical directions; And a lens 100 having a plurality of lens units of a plurality of lateral lengths detachably attached to the front surface of the lens barrel 50 so as to respectively adjust an irradiation angle of a beam emitted from the LED lamps 50 of the plurality of lateral bars.

Referring to Fig. 1, the lamp case 12 of the lighting device 10 is arranged to be inclined toward the crosswalk of the ground at the upper part of the stanchion 20 standing on both left and right sides of the crosswalk.

Referring to FIG. 2, an inner frame 14 is disposed inside the lamp case 12 so that the LED lamp 50 is spaced apart from each other by a plurality of arrows.

The inner frame 14 is formed in the illumination case 12 in the form of a heat dissipation frame and is mounted on the guide rails (not shown) so that the flanges 111, 121, and 131 of the first, 14a are formed.

3, the lens 100 includes a first lens unit 110 attached to the front surface of the LED lamp 50 disposed on the upper horizontal axis, and a second lens unit 110 disposed below the first lens unit 110, A second lens unit 120 integrally connected to the first lens unit 110 via a connection unit 140 and attached to a front surface of an LED lamp 50 positioned in a middle transverse direction, And a third lens unit 130 disposed on the lower side of the second lens unit 120 and attached to the front surface of the LED lamp 50 integrally connected to the second lens unit 120 via the second connection unit 150, ).

The first connection unit 140 integrally connects the first and second lens units 110 and 120 and the second connection unit 150 integrally connects the second and third lens units 120 and 130.

As shown in FIG. 4, the first lens unit 110 includes a first receiving groove 112 which receives the LED lamp 50 and has a top surface 112a formed in a plane, The lower surface 114a is symmetrical with respect to the first receiving groove 112 so that the light irradiated from the LED lamp 50 is concentrated on the upper surface, An upper groove 114 formed in a plane is formed, and the upper surface 113 is formed in a flat plane shape.

5, the second lens unit 120 includes a second receiving groove 122 for receiving the LED lamp 50 therein, and a second receiving groove 122 for receiving the LED lamp 50, A curved surface 125 formed to be inclined at an inclined angle so as to have a total curvature around the outer circumference and an upper surface 123 formed to be convex upward As shown in FIG.

6, the third lens unit 130 is formed with a third receiving groove 132 for receiving the LED lamp 50 therein, and a third receiving groove 132 for receiving the LED lamp 50, The upper surface 132a is formed to have a curvature in a downward convex shape and the inclined surface 135 formed to be inclined at an inclined angle so that the outer circumferential surface has a total curvature and the upper surface 133 is formed in a flat planar shape .

Accordingly, the first lens unit 110 is disposed on the upper portion of the inner frame 14 so that the irradiation distance of the beam projected to the transverse side of the ground surface is the farthest away from the second and third lens units 120 and 130, The light emitted from the LED lamp 50 is focused on the front side so that the angle of the beam irradiated from the LED lamp 50 is more concentrated than the irradiation angle of the beam irradiated from the second and third lens units 120 and 130 have.

That is, the first lens unit 110 focuses the light emitted from the LED lamp 50 received in the first receiving groove 112 more than the irradiation angle of the beam irradiated from the second and third lens units 120 and 130, A beam having a light source of the same size as that of the light source irradiated from the second and third lens units 120 and 130 can be irradiated onto the surface of the crosswalk.

The second lens unit 120 focuses the light irradiated from the LED lamp 50 received in the second receiving groove 122 more than the irradiation angle of the beam irradiated from the third lens unit 130, A light source having the same size as the light source irradiated from the lens unit 130 is irradiated to the crosswalk so that the light sources irradiated to the crosswalk are irradiated with the same size.

For example, when the irradiation angle of the light irradiated through the first lens unit 110 is 10 degrees with respect to the surface where the crosswalk is displayed, when the irradiation angle of the light irradiated through the second and third lens units 120 and 130 is 20 To 40 °.

The first lens unit 110 includes a first receiving groove 112 in which a LED lamp 50 is received and an upper groove 114 symmetrical with the first receiving groove 112, And the circumferential surface 115 is formed to be bent at an inclined angle around the lower portion thereof.

The total radius of curvature (unit: mm) of the peripheral surface 115 of the first lens unit 110 has an R value of R36.1 to R37.1.

If the radius of curvature of total reflection curvature of the peripheral surface 115 of the first lens unit 110 is less than R36.1, the curvature decreases and the reflection angle becomes narrow to narrow the outgoing angle. When the curvature value becomes small, The total reflection angle is widened, and the light distribution shape is scattered.

If the total curvature radius of the peripheral surface 115 of the first lens unit 110 exceeds R37.1, the curvature becomes wider and the reflection angle becomes too wide to broaden the exit angle, and the light distribution shape of the final exit surface There are disadvantages of crushing.

The first, second, and third lens units 110, 120, and 130 have a circumferential surface 115, a curved surface 125, and a slanted surface 135 formed to have a narrower outer diameter than the upper surface.

7, light is irradiated from the LED lamp 50 housed in the first receiving groove 112 through the first receiving groove 112 and the upper groove 114 at a central straight vertical line, In addition, the light irradiated to the circumferential surface 115 is reflected to the front, and the light is concentrated and irradiated to the side of the crosswalk.

As shown in FIGS. 8 and 9, the second and third lens units 120 and 130 are arranged such that the light is dispersed compared to the first lens unit 110, Is concentrated and irradiated to the crosswalk.

The upper surface 122a of the second receiving groove 122 is curved in a convex shape and the LED lamp 50 emits light in the second receiving groove 122, Light is concentrated and irradiated onto the front side in the second receiving groove 122, light is incident on the lower curved surface 125, reflected and irradiated to the front side.

The radius of curvature (central curvature) of the upper surface 122a of the second receiving groove 122 has an R value (unit: mm) of R2.3 to R3.3, and a radius of curvature of total reflection through the curved surface 125 is R43.5 to R44.5, and the curvature radius of the upper surface 123 has an R value of R59.0 to R60.0.

Since the curvature of the upper surface 123 is a value considering the light source illumination angle such as the center curvature and the curvature of the curved surface 125, the curvature of the upper surface 123 may be formed in a flat plane shape. However, .

Since the radius of curvature (central curvature) of the upper surface 122a of the second receiving groove 122 relatively acts as a convex lens, the angle of emergence becomes smaller when the angle is less than R2.3, The light output angle is rather widened, and the light distribution is scattered.

On the other hand, when the radius of curvature (central curvature) of the upper surface 122a of the second receiving groove 122 exceeds R3.3, the curvature becomes relatively gentle so that the angle toward the upper surface can not be concentrated through the center curvature, There is a disadvantage that it becomes wider.

When the radius of curvature of the second lens unit 120 that is totally reflected through the curved surface 125 is less than R43.5, the curvature is reduced and the reflection angle is narrowed, resulting in a narrowing of the output angle. The reflected light is crossed over a certain distance, so that the final output angle is rather widened and the light distribution shape is scattered.

When the radius of curvature of the second lens unit 120 that is totally reflected through the curved surface 125 is greater than R44.5, the curvature is widened and the angle of reflection is widened to widen the angle of outgoing light. The shape may be crushed.

The curvature of the upper surface 123 of the second lens portion 120 is the curvature of the central curvature and the radius of curvature that affects when the light coming through the curved surface 125 is finally emitted. In the case of less than R59.0, The angle becomes narrower, and the intersection point is severely widened, so that the light distribution shape may be crushed. On the other hand, when R60.0 is exceeded, the finally emitted angle widens and the light distribution shape may be crushed.

The third lens portion 130 has an R value of the curvature radius (central curvature) of the upper surface 132a of the third receiving groove 132 of R4.5 to R5.5 and a radius of curvature of the total reflection curvature of the inclined surface 135 Has an R value of R135.8 to R136.8.

When the radius of curvature (central curvature) of the upper surface 132a of the third receiving groove 132 is less than R4.5, the third lens unit 130 has a smaller angle of emergence due to the central curvature, The light distribution shape is likely to be crushed as the angle of outgoing light to the upper surface is rather widened. On the other hand, when the radius of curvature exceeds R5.5, the curvature becomes relatively gentle, The angle of the light going to the upper surface becomes too wide.

When the radius of curvature of total reflection of the inclined plane 135 of the third lens unit 130 is less than R135.8, the reflection angle becomes narrower as the curvature becomes smaller and the angle of emission becomes narrow. The reflected light from both sides cross each other and the final output angle is widened, and the light distribution shape may be crushed.

On the other hand, when the radius of total reflection curvature of the inclined surface 135 of the third lens unit 130 exceeds R136.8, the curvature becomes wider and the reflection angle becomes wider, and the light distribution shape may be crushed as the exit angle becomes too wide .

The center curvature of the second and third lens units 120 and 130 and the total total reflection curvature of the lower and upper lens units 120 and 130 are such that the light is concentrated as the R value decreases and the light is dispersed as the R value increases, 12, the angle of the light, which is an angle range of the interval of 50% of the maximum brightness while maintaining the shape of the light source irradiated to the crosswalk of the paper, is smaller than that of the conventional LED lamp 50 of FIG. The parabolic shape of the relatively narrow section is maintained as compared with the parabolic ray irradiated alone.

Also, as shown in FIG. 13, the light sources of the same size irradiated from the first, second, and third lens units 110, 120, and 130 are illuminated on the crosswalk, so that light of uniform illuminance is irradiated to the crosswalk.

On the other hand, the first, second and third lens units 110, 120, and 130 arranged in a plurality of rows and columns may be arranged in a plurality of rows instead of one row.

That is, the first, second, and third lens units 110, 120, and 130 may be arranged in a plurality of rows and columns.

The lens 100 of the present invention is arranged such that the beam irradiation angle of the LED lamp 50 disposed on the upper horizontal axis is smaller than the beam irradiation angle of the LED lamp 50 disposed on the lower horizontal axis, And the beam irradiation range is concentrated toward the lens part.

Therefore, according to the present invention, the irradiation angle of the light generated from the LED lamp 50 is variably converged according to the illumination angle of the illumination device 10 illuminating the side of the crosswalk, Illuminating the crosswalk can be illuminated with a uniform illuminance, so that it is possible to improve the discrimination of the pedestrian and the lane at night.

10: lighting device 12: lighting lamp case
14: inner frame 14a: guide rail
20: column 50: LED lamp
100: lens 110: first lens unit
112: first receiving groove 114: upper groove
115: circumferential surface 120: second lens portion
122: second receiving groove 122a: upper surface of (second receiving groove)
123: upper surface 125: curved surface
130: third lens portion 132: third receiving groove
132a: upper surface 135 (of the third receiving groove): inclined surface
140: first connection part 150: second connection part

Claims (6)

A lamp case (12) arranged at an angle to an upper part of the column (20) standing on the crosswalk;
An inner frame 14 provided within the lamp case 12;
An LED lamp (50) arranged on the inner frame (14) in a plurality of horizontal and vertical directions; And
The angle of the beam irradiated from the LED lamp 50, which is detachably coupled to the front surface of the LED lamp 50 and arranged in the plurality of transversely arranged stages, is smaller than the beam irradiation angle of the third lens unit 130 disposed on the lower transverse axis. And a first lens unit 110 disposed on the upper horizontal axis so as to be irradiated with a smaller angle than the beam irradiation angle of the second lens unit 120. The second lens unit 120 includes a first lens unit 110, (100)
The first lens 110 in an inclined angle accommodating the LED lamps 50 on the lower inner side and the upper surface (112a) is the first receiving groove 112 and the outer peripheral surface circumference is formed in a plane so as to have a total reflection of curvature A lower surface 114a symmetrical to the first receiving groove 112 so as to concentrate light radiated from the LED lamp 50 at an upper portion thereof and an upper groove 114 formed in a plane, And an upper surface 113,
The second lens unit 120 includes a second receiving groove 122 which receives the LED lamp 50 and has a top surface 122a formed to have a curvature in a downward convex shape, A curved surface 125 formed at an inclined angle so as to have a convex shape and an upper surface 123 formed in a convex shape upward,
The third lens unit 130 includes a third receiving groove 132 which receives the LED lamp 50 and is formed such that the upper surface 132a of the third lens unit 130 has a convex shape curving downwardly, And an upper surface 133 formed in a flat surface,
Wherein each of the first, second and third lens units (110, 120, 130) is configured to be illuminated with light sources (W1, W2, W3) of the same size on a crosswalk. The method according to claim 1,
Wherein the inner frame (14) is formed with a plurality of lateral guide rails (14a) so that the first, second and third lens units (110, 120, 130) are detachably coupled. The method according to claim 1,
The first lens unit 110 and the second lens unit 120 are integrally connected by a first connection unit 140 and the second lens unit 120 and the third lens unit 130 are connected to each other by a second connection unit 140. [ (150) so as to be integrally connected to each other. The method according to claim 1,
Wherein a radius of total reflection curvature of the peripheral surface (115) of the first lens unit (110) is R36.1 to R37.1 mm. The method according to claim 1,
The radius of curvature of the second lens portion 120 with respect to the upper surface 122a of the second receiving groove 122 is from R2.3 to R3.3 mm and the radius of curvature of total reflection with respect to the curved surface 125 is R43.5 to R44 And the radius of curvature with respect to the upper surface (123) is R59.0 to R60.0 mm. The method according to claim 1,
The radius of curvature of the third lens part 130 with respect to the upper surface 132a of the third receiving groove 132 is R4.5 to R5.5 mm and the total radius of curvature radius of the inclined surface 135 is R135.8 to R136. Wherein the light emitting device is a light emitting device for a crosswalk.

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