KR101566793B1 - Led crosswalk lighting using free curved surface and reflection, and assembly method thereof - Google Patents

Abstract

The present invention relates to an LED lighting device for crosswalk and an assembling method thereof. The device includes a reflector having a L-shaped curved body in a symmetrical structure, and forming a free curved surface by an aspherical surface to reflect emitted light of an LED to a target surface; a heat sink enabling the internal combination of the reflector, performing a function of a body case, and performing a radiation function; the LED installed in the heat sink, and making the emitted light reflected from the free curved surface of the reflector; and a cover protecting the LED and the reflector by being combined with a lower surface of the heat sink, and transmitting the controlled light of the LED, heading for the target surface by being reflected by the reflector. The emitted light of the LED is controlled by using an indirect lighting method without exposing a light source, and therefore, light pollution and glare problems are improved and a perfect waterproof function is formed.

Description

FIELD OF THE INVENTION [0001] The present invention relates to an LED lighting device for a pedestrian using a free-form surface design and reflection, and an assembly method thereof.

The present invention relates to an LED lighting apparatus for a crosswalk, and more particularly, to an LED lighting apparatus for a crosswalk, and more particularly, The present invention relates to a free curved surface design for improving the glare problem by controlling the light by structure designing by an illumination method, and an LED lighting device for a crosswalk using reflection and an assembly method for achieving a perfect waterproofing.

BACKGROUND ART [0002] Recently, the application of LED (Light Emitting Diode) as a light source of various lighting apparatuses has been gradually expanded.

LED, which is a semiconductor light source device that generates light, has advantages of low power consumption and long life compared to conventional incandescent lamps and fluorescent lamps, and is widely used in various industries including general lighting devices and backlighting sources have.

Generally, the LED light source has a strong directivity of light and has a radiation pattern close to the point light source. As shown in FIG. 1, the LED light source has a Gaussian distribution in which light distribution is concentrated at the center portion as compared with the surroundings.

However, this type of radiation causes light pollution due to the fact that the center light is too strong compared to the surrounding area, resulting in glare due to the shining of light.

Accordingly, in the related art, in order to compensate for the glare phenomenon and the light pollution caused by the direct emission type of the LED light source, there is an effort to solve the problem by using a brightest lens for controlling the light on the LED side .

As shown in FIG. 2, the light source of the light source, which is a point light source, controls the light emitted from the LED in the form of a surface light source by adjusting the linearity.

However, although the radiated form of the light-controlled LED light source through the coupling of the light-tight lens has the Lambertian distribution, it still indicates that the central light is stronger than the surrounding light, and the light control of the LED light source is still insufficient And there is a difficulty in eliminating the glare phenomenon caused by the glare of light.

Meanwhile, the LED light source is also applied to illuminate the pedestrian crossing, and the crosswalk is to protect the driver, the pedestrian and the traffic signaler and to lower the traffic accident rate through the LED lightening device for the crosswalk. Adoption and simple assembling of the cross-sectional sidewalk. Therefore, there is a problem that the above-described problem of glare and light pollution can not be solved yet.

This causes the problem of discomfort glare, which causes the glare of the driver and the pedestrian and the signal giver, to become serious, narrowing the view of the driver, the pedestrian and the signal giver.

In addition, the conventional LED lighting apparatus for pedestrian crossing has a structure for widening the heat dissipation area, has many LEDs, is heavy in weight and large in size, and has a high unit price.

On the other hand, according to the prior art related to the LED lighting device for pedestrian crossing, in Korean Patent Laid-Open No. 10-2012-0038622, light is emitted in the sky direction from the road surface of a pedestrian crossing, A plurality of light emitting units continuously provided on the road surface of the crosswalk; And a controller for controlling the driving of the vehicle signal lamp and the pedestrian signal lamp installed in the plurality of light emitting units and the pedestrian crossing, and is a system for causing light pollution.

In addition, in Korean Patent No. 10-0927868, an LED lamp is used as a light source, and an illuminating lamp for a crosswalk, to which an LED lamp is applied so that light irradiated from a plurality of light sources is not dispersed and each light source illuminates a predetermined area Which comprises a column and an illumination support plate formed on the column so as to face each region on a transverse sidewalk on which the divided regions are virtually divided, and a plurality of LEDs installed on the illumination support plate and illuminating the pedestrian crossing A back plate fixed to the column; a plurality of side plates disposed adjacent to the respective areas on the imaginaryly divided transverse sidewall and adjacent to each other so as to be angularly adjustable on the front surface of the back plate; And a lamp installation panel of the vehicle, and it is a technique of recognizing only the presence or absence of a crosswalk .

Furthermore, the LED lighting apparatus for pedestrian crossing that has been proposed and disclosed in the prior art is a technology for recognizing only the presence or absence of a crosswalk, and has a structural design that does not have a solution for offensive glare and light pollution prevention.

Korean Patent Publication No. 10-2012-0038622 (2012.04.24. Open)

Korean Registered Patent No. 10-0927868 (Announcement of Nov. 13, 2009)

SUMMARY OF THE INVENTION The present invention has been made in view of the above problems and the like, and it is an object of the present invention to prevent light pollution by light control by using a free curved surface structure design and reflection of light through it, The object of the present invention is to provide a free curved surface design that minimizes glare by controlling the light by structure designing by indirect lighting, and an LED lighting device for crosswalk using reflection.

 The present invention can minimize the weight and size, lower the unit cost, allow for the recognition of the presence of the crosswalk, and design a free curved surface for solving unpleasant glare and light pollution problems, There is another purpose in providing an LED lighting device.

The present invention realizes compact lighting equipment and enables light weight to the installation site, effective light control suitable for the crosswalk illumination, and free-form curved surface design and reflection There is another object of the present invention to provide an LED lighting apparatus for a pedestrian using crosswalk.

SUMMARY OF THE INVENTION It is an object of the present invention to provide a method of assembling an LED lighting apparatus for a crosswalk using a free-form surface design and reflection for realizing perfect waterproofing due to the characteristics of being installed outdoors.

According to an aspect of the present invention, there is provided an LED lighting device for a crosswalk using a free-form curved surface design and a reflection type light source, the LED lighting device including: Controlling the light diffusion so as to prevent the light from deviating from the target surface while reducing the directivity and forming the light uniformity of the light on the target surface. It is a structure that is symmetrical with respect to the central axis, Of a bendable body; A vertical surface portion on which the LED arrangement opening is formed on the central axis; A concave reflecting surface which is formed by bending toward the front side and extending from the vertical surface portion and which is located in each of right and left regions of the inner surface and which is recessed and curved inwardly and a curved surface formed between the concave reflecting surfaces, A free-form surface reflecting portion including a protruding reflecting surface; An inclined-surface reflector formed on the free-form surface reflector so as to extend from the free-form surface reflector and inclined forward, the inclined-surface reflector having an inner surface formed as a flat inclined surface; And a reflector integral with the reflector.

According to another aspect of the present invention, there is provided an LED lighting apparatus for a curved crosswalk using free-form curved surface design and reflection, comprising: a bending-type body having a structure that is horizontally symmetrical with respect to a central axis, And a reflecting surface for indirectly irradiating the target surface by forming a free curved surface by an aspherical surface on the inner surface to generate a reflecting action with respect to divergent light of the LED; A heat sink for exerting a heat dissipation function as well as functioning as a main body case for enabling internal tightening of the reflector and showing an external shape; An LED mounted inside the heat sink and arranged so that diverging light hits the free curved surface of the reflector to cause a reflection action; A cover that is coupled to a lower surface of the heat sink to protect the reflector and the LED, and transmits the light-controlled light of the LED that is reflected by the reflector and faces the target surface; And a control unit.

Here, the reflector may have a bendable body having a memory structure symmetrical with respect to a central axis and having an outer shape; A vertical surface portion on which the LED arrangement opening is formed on the central axis; A concave reflecting surface which is formed by bending toward the front side and extending from the vertical surface portion and which is located in each of right and left regions of the inner surface and which is recessed and curved inwardly and a curved surface formed between the concave reflecting surfaces, A free-form surface reflecting portion including a protruding reflecting surface; An inclined-surface reflector formed on the free-form surface reflector so as to extend from the free-form surface reflector and inclined forward, the inclined-surface reflector having an inner surface formed as a flat inclined surface; As shown in FIG.

In this case, the recessed reflective surface and the protruding reflective surface are continuous free-curved surfaces, and the reflective surface of the groove is a curved surface extending toward the outward direction, leading to a protruded reflective surface positioned at the center, May be positioned on the center axis of the reflector and positioned in front of the LED, which is the protrusion formation and light source.

Here, the reflector may be made of a plastic material to realize a light weight, and an aluminum coating layer may be formed on the surface of the reflector so as to increase the reflectance of the LED to divergent light.

Here, the reflector may be formed by forming a grid pattern wave pattern of concave-convex structure in which curved waves of a sinusoidal waveform are alternately arranged on the inner surface of the reflector so that a yellow pattern or a dispersive pattern Can be configured to be removed.

Here, the reflection shafts can be constituted by two pairs by separating them with respect to the central axis.

Here, the heat sink may be a cap-shaped round body having a bottom opening structure, A receiving space formed inside the round body for accommodating and locating the reflector; An LED mounting part for mounting and disposing an LED as a light source on a central portion of a vertical wall forming the rear surface of the accommodation space, the LED mounting part being capable of positioning the LED on the LED arrangement opening of the reflector when the reflector is fastened; As shown in FIG.

At this time, a waterproof ring insertion groove is formed in the round body so that a waterproof ring for a waterproof function can be used over the entire lower edge of the round body. The round body has a heat dissipating fin .

Here, the LED may be any one selected from a COB (Chip On Board) type LED module, a COM (Chip On Metal) type LED module, and an OLED (organic light emitting diode).

Here, the cover may be formed of a material such as polycarbonate (PC), silicone, polymethyl methacrylate (PMMA), cycloolefin copolymer (COC), polyethyleneterephthalate PET). ≪ / RTI >

Here, the heat sink may be made of a thermally conductive plastic or aluminum material so that the heat dissipation efficiency and the weight of the lighting apparatus can be reduced.

According to another aspect of the present invention, there is provided a method of assembling an LED lighting device for a pedestrian using a free curved surface design and a reflection method, the method comprising the steps of: (A) A heat sink having a waterproof ring insertion groove formed in a lower surface thereof and communicating with the accommodation space at an upper end of the space, an LED for mounting in the accommodation space of the heat sink, The method comprising: (B) tightening the cable gland for waterproofing to the wire insertion hole of the heat sink, and then tightening the cable gland through the electric wire; (C) connecting an electric wire to the LED by fastening the LED to the inner wall of the rear surface of the heat sink; (D) positioning the reflector in a receiving space of the heat sink and fixing the reflector; (E) tightening the transparent cover on the side of the heat sink in a state in which the waterproof ring is fitted in the waterproof ring insertion groove of the heat sink; And a control unit.

According to the present invention, the light is controlled by using the free-curved surface structure design and the reflection of light through the indirectly-illuminated method that does not expose the light source, so that the glare (glare) can be minimized But also the usefulness of preventing light pollution can be achieved.

 The present invention minimizes the weight and size compared to the prior art, thereby achieving weight reduction and lowering the unit cost. It is also possible to recognize the presence or absence of a crosswalk while achieving the usefulness of solving unpleasant glare and light pollution problems by indirect lighting design can do.

Since the present invention can realize a compact lighting apparatus, it can be lightened to a mounting stand, can perform effective light control suitable for a crosswalk illumination, can be easily manufactured with a simple configuration, Can be achieved.

According to the present invention, it is possible to induce and control the light diffusion so that the light does not deviate from the target surface while reducing the straightness of the light of the LED through the reflection of the light by the free-curved surface design and increase the light uniformity of light on the target surface And it is possible to remove the yellow pattern or the separable pattern which may occur as a result of applying the LED as a light source, thereby achieving the usefulness of improving the performance of the lighting apparatus.

The present invention can achieve usefulness to realize a perfect waterproofing through the use of a waterproof ring and a cable gland.

BRIEF DESCRIPTION OF THE DRAWINGS Figure 1 shows a general radiation pattern for an LED light source.
2 is a view showing a radiation pattern of an LED light source that is optically controlled by use of a conventional brightening lens;
3 is a 3D modeling drawing of a LED lighting device for a pedestrian using free-form surface design and reflection according to an embodiment of the present invention.
FIG. 4 is a 2D drawing of a recessed portion of a reflector in a free-curved surface design and an LED lighting apparatus for a crosswalk using reflection according to an embodiment of the present invention.
5 is a photograph of a prototype product showing a reflector in an LED lighting device for a crosswalk using a free-form surface design and reflection according to an embodiment of the present invention.
FIG. 6 is a 2D view of a heat sink that also serves as a main body case in an LED lighting apparatus for a crosswalk using free-form surface design and reflection according to an embodiment of the present invention. FIG.
FIG. 7 is a photograph of a prototype product showing a heat sink that also serves as a main body case in an LED lighting device for a crosswalk using free-form surface design and reflection according to an embodiment of the present invention.
8 is a photograph showing a prototype of an LED lighting device for a pedestrian using free-form surface design and reflection according to an embodiment of the present invention.
9 is a light ray tracing diagram illustrating a light control state of a free-form surface design and reflection LED lighting apparatus for a pedestrian according to an embodiment of the present invention.
10 is a graph showing light distribution density of a free-curved surface design and an LED lighting apparatus for a crosswalk using reflection according to an embodiment of the present invention.
11 is a graph showing the heat dissipation performance of the LED lighting device for a crosswalk using a free-form surface design and reflection according to an embodiment of the present invention.
12 is a graph showing illumination performance of an LED lighting device for a crosswalk using a free-form surface design and reflection according to an embodiment of the present invention.
13 is a schematic flow diagram illustrating a method of assembling an LED lighting apparatus for a pedestrian using a free-form surface design and reflection according to an embodiment of the present invention.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, preferred embodiments of the present invention will be described with reference to the accompanying drawings. The present invention will become more apparent from the following detailed description when taken in conjunction with the accompanying drawings.

3 to 8, the LED lighting apparatus 1 for a crosswalk using free-form surface design and reflection according to an embodiment of the present invention includes a reflector 100, a heat sink 200, an LED 300, (400).

The reflector 100 guides and controls the light diffusion so that the light does not deviate from the target surface while reducing the straightness of the light by using reflection of light through the free curved surface design for the divergent light of the LED 300 applied as a light source And has a bending-type body having a substantially memory (A) structure, and is symmetrical with respect to the center axis (C) as a left-right symmetry.

The reflector 100 includes a vertical surface 110 on which an LED arrangement opening 111 for arranging an LED 300 as a light source is formed on a central axis; A concave reflecting surface 121 which is formed by bending toward the front and extending from the vertical surface 110 and which is located at the left and right sides of the inner surface and which is recessed and curved inwardly and formed between the concave reflecting surface 121 and the concave reflecting surface 121; A free-form surface reflector 120 including a protruding reflective surface 122 protruding outwardly and curved; And an inclined-surface reflector 130 inclined from the free-form surface reflector 120 and inclined toward the front, the inclined-surface reflector 130 having an inner surface formed as a flat inclined surface.

At this time, the recessed reflective surface 121 and the protruded reflective surface 122 are formed as free curved surfaces formed continuously and continuously.

The concave reflecting surface 121 is formed as a curved surface that expands as it goes outward and is formed to extend to a protruding reflecting surface 122 located at the center.

The protruded reflective surface 122 of the free-form surface reflector 120 is protruded and formed on the center axis of the reflector between the recessed reflective surfaces 121 located in the right and left regions, As shown in Fig.

The reflector 100 is preferably formed as an aspherical surface with respect to the inner surface including the free-form surface reflector 120. Through the configuration of the aspherical surface, the aspherical surface conic constant and the aspherical surface coefficient can be adjusted, It is possible to freely adjust the curvature value of the LED 300 as a light source and freely adjust the radiation path and the light distribution with respect to the divergent light of the LED 300 as a light source, .

A plurality of fastening holes for fastening the heat sink 200 to the reflector 100 are formed.

Also, the reflector 100 may be formed of a metal material, and more preferably, may be made of a plastic material so as to reduce the cost and ease of molding.

In particular, the reflector 100 may be formed of a plastic material, and the reflectance may be increased by forming an aluminum coating layer on the surface of the body using a plasma deposition technique. In this case, It is preferable to configure the optical switch so that more effective optical control can be performed.

Further, the reflection grating 100 may be provided with a grid pattern wave pattern having a concave-convex structure in which curved waves of sinusoidal waveforms are alternately arranged on the inner surface (reflection surface), and the LED 300 is used as a light source Accordingly, it is possible to remove the yellow pattern, the dispersed pattern, and the like that may occur on the target surface, and the problems of the LED 300 itself can be improved.

The reflector 100 has a structure in which the reflector 100 is symmetrically symmetrical with respect to the center axis C, and the reflector 100 can be divided into two groups.

Here, the recessed reflective surface 121 of the free-form surface reflector 120 reflects the divergent light of the LED 300, which is a light source, and transmits light leaking in both side directions to the target surface, And the light uniformity of the light.

The protruding reflective surface 122 of the free-form surface reflector 120 induces light diffusion through the reflection of the divergent light of the LED 300 as a light source, thereby reducing the straightness of the light, thereby improving the glare, It controls to be in category so as not to go out of plane.

The inclined reflector 130 reflects the divergent light of the LED 300, which is a light source, to reduce the directivity of the light, thereby minimizing the sparkle of light and the glare together with the free curved surface reflector 120 .

The reflector 100 has a bending-type body having a memory structure and a free-form surface structure formed on the inner surface of the reflector 100, so that the LED 300, which is a light source, can be hidden to control the light. So that it is possible to improve the discomfort glare which is the most problematic in the prior art.

The heat sink 200 serves not only to show the external appearance of the lighting apparatus 1 but also to function as a main body case for tightening and protecting the reflector 100 and to exert a heat radiation function. Shaped cap body 210 having a bottom opening structure and designed to be able to fasten the reflection shade 100 while hiding it from being exposed to the outside.

The heat sink 200 includes a receiving space 220 formed inside the round body 210 for accommodating and positioning the reflector 100 and a vertical wall surface 220 forming a rear surface of the receiving space 220. [ And an LED mounting part 230 for mounting and disposing the LED 300 as a light source in the LED array 300 so that the LED 300 can be positioned on the LED array opening 111 of the reflector 100 when the reflector 100 is fastened .

At this time, a waterproof ring insertion groove 240 is formed in the round body 210 having a hat-like hat-like structure so that a waterproof ring for a waterproof function can be coupled to the entire bottom edge.

The receiving space 220 formed inside the round body 210 is formed in a groove shape having a substantially memory structure corresponding to the structure of the reflector 100.

The round body 210 is preferably configured to include a plurality of radiating fins 250 having a plurality of radiating fin forming structures for improving the heat radiating function.

The heat sink 200 is formed with a plurality of fastening holes corresponding to the fastening holes of the reflector 100 on the receiving space 220 formed inside the round body 210.

Here, the heat sink 200 is preferably made of a thermally conductive plastic or aluminum material for heat dissipation efficiency and lightening of the lighting device.

The heat sink 200 is formed with a wire insertion hole (not shown) formed at an outer upper end of the round body 210 so as to communicate with the inner accommodation space 220.

It is preferable that the LED 300 is fastened to the LED mounting part 230 of the heat sink 200 and a multi-chip package LED module is applied for miniaturization of the lighting device. A COB (Chip On Board) Type LED module or a COM (Chip On Metal) type LED module may be used.

Sometimes, the LED 300 may be an OLED (organic light emitting diode).

The LED 300 is located on the target surface of the heat sink 200 and is disposed in the LED rear opening 111 of the reflector 100 and is mounted on the inner wall of the heat sink 200, And the indirect illumination function for controlling the light to be irradiated to the target surface through the free curved surface of the reflector 100 coupled to the receiving space 220 formed in the inside of the housing 200.

The cover 400 is fastened to the bottom surface of the heat sink 200 and is made of a transparent cover made of a transparent material capable of transmitting light.

The cover 400 may be formed of a material such as polycarbonate (PC), silicone, polymethyl methacrylate (PMMA), cycloolefin copolymer (COC), polyethyleneterephthalate PET). ≪ / RTI >

A waterproof ring insertion groove (not shown) may be formed on one side of the cover 400 in a form and structure corresponding to the waterproof ring insertion groove 240 of the heat sink 200.

The performance test and the results of the free-curved surface design and the LED lighting device 1 for crossing using the reflection according to the embodiment of the present invention will be described as follows.

9 is a light ray tracing diagram showing the light control state of the LED lighting apparatus 1 for crosswalk using the free-form surface design and reflection according to the embodiment of the present invention.

Here, the data of FIG. 9 is simulation analysis data that induces and controls light diffusion with respect to divergent light of the LED 300 through reflection action of the reflector 100 having a structure design of a free-form surface structure by an aspherical surface on the inner surface .

10 is data showing the light distribution density of the LED lighting apparatus for crossing using free-form surface design and reflection according to the embodiment of the present invention.

Here, the data of FIG. 10 shows simulation analysis data that light is irradiated and distributed on a target surface in a certain region through the reflection action of the reflector 100 having the structure design of a free-form surface structure by an aspherical surface , The linearity of the light is reduced and the light uniformity is formed by the light control.

FIG. 11 is a test result showing the heat radiation performance of the LED lighting device for crossing using free-form surface design and reflection according to the embodiment of the present invention.

Here, the heat radiation performance is measured by measuring the Tc portion of the LED 300, the radiating fin portion of the heat sink 200, the top of the heat sink 200, and the front surface of the heat sink 200 using an MV100-4 channel heat meter Respectively.

At this time, the thermal grease is 3.0 W / m · k and the atmospheric temperature is 24 ° C.

As can be seen from the graph and the table shown in FIG. 11, the temperature of the Tc portion of the LED 300 becomes 50.2 ° C., and the time required for the thermal equilibrium is about 120 minutes. The temperature difference from the front surface of the heat sink 300 10 ° C, showing excellent heat radiation characteristics.

12 is data showing illumination performance of an LED lighting apparatus for a pedestrian using a free-form surface design and reflection according to an embodiment of the present invention.

Here, the table is the illumination performance measurement data, and the graph is the light distribution curve data indicating the radiation pattern according to the light control.

At this time, 40W-class LED lighting device for 40W-class pedestrian crossing was fabricated and requested to analyze the lighting performance of Korea Photovoltaic Source. The goniophotometer, which is located at the bottom of the table, Respectively.

The test results show that the light efficiency is 65.05 lumens per watt and the output is 40.51 watts.

Also, the graph shows that light control according to the reflection action is performed.

Herein, the term " target surface " used in the description of the present invention and in the claims is understood to mean a transverse press surface.

Meanwhile, FIG. 13 is a schematic flowchart for explaining a method of assembling an LED lighting apparatus for a pedestrian using a free-form surface design and reflection according to an embodiment of the present invention.

A heat sink having a waterproof ring insertion groove formed in a bottom surface thereof and having a receiving space for receiving the reflection gathers and having a wire insertion hole communicating with the accommodation space at an outer upper end thereof, An LED for mounting in a space, and a transparent cover for covering a receiving space of the heat sink.

At this time, the detailed configuration of each of the above-mentioned components shall apply mutatis mutandis to the above-described contents.

As shown in FIG. 13 (a), a cable gland for waterproofing is fastened to a wire insertion hole of a heat sink, and then a wire for power supply is passed and tightened.

As shown in FIG. 13 (b), the LED is fastened to the inner wall of the rear surface of the receiving space of the heat sink, and the wires (+, -) are connected to the LED by soldering.

As shown in Fig. 13 (c), the reflector is placed and placed in the receiving space of the heat sink, and then fastened by bolts.

13 (d), the transparent cover is fastened to the heat sink side using bolts in a state where the waterproof ring is fitted to the waterproof ring insertion groove formed in the bottom surface of the heat sink.

Next, an electric wire connected to the LED and an SMPS as a power supply are connected. Through this assembling process, an LED lighting device for a pedestrian crossing including a reflector having a free-curved surface design, as shown in FIG. 13 (e) And it is possible to provide an LED lighting device for a pedestrian which can fully perform a waterproof function, can be easily manufactured, and can satisfy mass productivity.

While the present invention has been described with reference to exemplary embodiments, it is to be understood that the present invention is not limited to the disclosed exemplary embodiments, but, on the contrary, Substitution can be made, which will be within the technical scope of the present invention.

1: LED lighting device for pedestrian crossing
100: reflector 110: vertical surface
111: LED arrangement opening 120: free-form surface reflection part
121: concave reflecting surface 122: projecting reflecting surface
130:
200: heat sink 210: round body
220: accommodation space 230: LED mounting part
240: Waterproof ring insertion groove 250:
300: LED
400: cover

Claims (13)

An LED lighting apparatus for a crosswalk in which an LED is used as a light source,
By using reflection of light through the free curved surface design for the divergent light of the LED used as the light source, it is possible to induce and control the light diffusion so that the light does not deviate from the target surface while reducing the straightness of the light, And has a bending-type body having a memory structure, the body being symmetrically symmetrical with respect to a central axis, and having an outer shape;
A vertical surface portion on which the LED arrangement opening is formed on the central axis;
A concave reflecting surface which is formed by bending toward the front side and extending from the vertical surface portion and which is located in each of right and left regions of the inner surface and which is recessed and curved inwardly and a curved surface formed between the concave reflecting surfaces, A free-form surface reflecting portion including a protruding reflecting surface;
An inclined-surface reflector formed on the free-form surface reflector so as to extend from the free-form surface reflector and inclined forward, the inclined-surface reflector having an inner surface formed as a flat inclined surface; And a reflector integral with the reflector. The LED illumination device for a crosswalk using reflection free curved surface design and reflection.
delete An LED lighting apparatus for a crosswalk in which an LED is used as a light source,
And has a bendable body of a memory structure and has a free curved surface formed by an aspherical surface on its inner surface to generate a reflecting action against the divergent light of the LED, A reflector for illumination;
A heat sink for exerting a heat dissipation function as well as functioning as a main body case for enabling internal tightening of the reflector and showing an external shape;
An LED mounted inside the heat sink and arranged so that diverging light hits the free curved surface of the reflector to cause a reflection action;
A cover that is coupled to a lower surface of the heat sink to protect the reflector and the LED, and transmits the light-controlled light of the LED that is reflected by the reflector and faces the target surface; / RTI >
The reflector
A body which is symmetrically symmetrical with respect to a central axis and has a bendable body of a memory structure;
A vertical surface portion on which the LED arrangement opening is formed on the central axis;
A concave reflecting surface which is formed by bending toward the front side and extending from the vertical surface portion and which is located in each of right and left regions of the inner surface and which is recessed and curved inwardly and a curved surface formed between the concave reflecting surfaces, A free-form surface reflecting portion including a protruding reflecting surface;
An inclined-surface reflector formed on the free-form surface reflector so as to extend from the free-form surface reflector and inclined forward, the inclined-surface reflector having an inner surface formed as a flat inclined surface; And an LED lighting device for a crosswalk using reflection.
The method according to claim 1 or 3,
Wherein the concave reflecting surface and the protruding reflecting surface are free curved surfaces formed continuously and continuously,
Wherein the concave reflecting surface is a curved surface extending toward the outside and extending to a protruding reflecting surface located at the center,
Wherein the protruding reflecting surface is located on the central axis of the reflector and is positioned in front of the LED as a protrusion forming and light source.
The method according to claim 1 or 3,
The reflector
The LED lighting device for a pedestrian using a free curved surface design and reflection is characterized in that it is made of a plastic material for light weighting and has an aluminum coating layer formed on the surface of the body so as to increase the reflectance against the divergent light of the LED.
The method according to claim 1 or 3,
The reflector
It is possible to remove the yellowish pattern and the dispersed pattern that may occur on the target surface by forming a grid pattern wave pattern of concave-convex structure in which the sinusoidal waves of the sinusoidal waveform are arranged on the inner surface, And a LED lighting device for a pedestrian using a reflection.
The method according to claim 1 or 3,
The reflector
Wherein the LED lighting device is divided into two groups based on a central axis, and the LED lighting device for a pedestrian using a free curved surface design and reflection is provided.
The method of claim 3,
The heat sink
A cap type round body having a lower open structure;
A receiving space formed inside the round body for accommodating and locating the reflector;
An LED mounting part for mounting and disposing an LED as a light source on a central portion of a vertical wall forming the rear surface of the accommodation space, the LED mounting part being capable of positioning the LED on the LED arrangement opening of the reflector when the reflector is fastened; And an LED lighting device for a crosswalk using reflection.
9. The method of claim 8,
A waterproof ring insertion groove is formed in the round body so that a waterproof ring for a waterproof function can be used in combination over the entire bottom edge,
Wherein the round body is formed with a radiating fin portion having a plurality of radiating fins for improving the heat radiation function on the rear portion thereof.
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