KR20100123194A - Led lamp unit for vehiclular road and vehicular road led lighting system with the same - Google Patents

Abstract

PURPOSE: A street led lamp unit and an LED lighting system with the same are provided to prevent a dead zone between LED street lights by forming a rectangular projection region on the road. CONSTITUTION: An LED device(100) is arranged in a circuit board(200). A lens unit(300) projects light from the LED device. An LED lens receiving unit is provided in the lens unit. The lens unit includes a first projection unit(320) and a second projection unit(330). A first reflective side(340) is arranged on the side of the first projection unit.

Description

LED lamp for street light and LED street light having same {LED LAMP UNIT FOR VEHICLULAR ROAD AND VEHICULAR ROAD LED LIGHTING SYSTEM WITH THE SAME}

The present invention relates to a street lamp LED lamp and a street lamp having the same, and more specifically, to improve the light distribution structure to focus on the roadway LED lamp for the street lamp having a structure that can increase the attention in the night driving It is about a street lamp.

Due to the development of electronic technology, advances in technology are being made in daily life or in general industries. In the field of lighting, there were limitations of color and power consumption, such as conventional simple lamps and / or high-power lamps such as halogen lamps and gas discharge lamps. Various luminaires, such as LEDs, are being researched and produced that can minimize carbon emissions by minimizing maintenance costs that increase operability.

LEDs are able to emit light of various colors and minimize eye fatigue, and are expanding their use in various industrial and living fields such as display of products such as jewelry, automobiles, and exteriors of buildings. However, the LED has a problem in that the area to be irradiated light is limited due to the straightness of the light. In order to solve this problem, conventionally, lenses such as a reflector plate provided in the downlight or a condenser lens for spreading uniform light are provided to compensate for this. However, in the case of a street light placed on a vehicle road, it is related to the driver's safety, and therefore, uniform light spreading over the area to be irradiated, that is, excellent uniformity and concentration of light in a specific area are required. LEDs did not meet the requirements needed to be implemented in such streetlights.

Accordingly, an object of the present invention is to provide an LED lamp for a street lamp and a LED lamp for a street lamp having the same, which can form a light distribution structure having a shape in which illuminance is concentrated to a predetermined area suitable for illumination of a lane.

The present invention for achieving the above object, a circuit board; An LED element unit disposed on the circuit board; And a lens unit disposed to face the LED element unit and emitting light generated from the LED element unit, wherein the lens unit is a cross section in any one or more planes perpendicular to the circuit board around the LED element unit. An LED lamp for a street lamp having an asymmetrical asymmetric cross section is provided.

In the LED lamp for street light, a lens LED accommodating portion for accommodating the LED element portion is provided on one surface facing the LED element portion of the lens portion, the lens portion; A lens first output unit configured to emit light generated from the LED element unit, a lens second output unit formed integrally with the lens first output unit, and having a different radius of curvature from the lens first output unit; The light emitting surface of the lens first emitting portion may be larger than the light emitting surface of the lens second emitting portion.

In the LED lamp for street light, the exit surface of the lens first exit portion is larger than the exit surface of the lens second exit portion, the lens LED receiving portion: the line segment perpendicular to the circuit board light generated from the LED element portion A lens LED first accommodating part for emitting light in a direction opposite to an arrangement area of the lens second emitting part as a reference; and a lens LED second accommodating part connected to the lens LED first accommodating part; The connection point of the first accommodating part and the lens LED second accommodating part may be disposed to be close to an end of the lens LED second emitting part based on a plane perpendicular to the circuit board and including a center of the LED element part.

In the LED lamp for street light, the light emitted from the LED element portion on the side of the lens first output portion and introduced into the lens first output portion is emitted through the opposite surface of the LED element portion to one surface of the lens first output portion. It may be provided with the lens 1st output reflecting surface which reflects as possible.

In the LED lamp for street light, at least one of the vertical lines including the center of the radius of curvature of the lens first exit portion and the lens second exit portion on a plane perpendicular to the circuit board around the LED element portion is the LED element portion It may also be spaced apart from the centerline.

In the LED lamp for street light, the radius of curvature of the lens first exit portion may be smaller than the radius of curvature of the lens second exit portion.

In the LED lamp for street light, The LED element portion is provided with an LED element disposed on the circuit board and in electrical communication with the circuit wiring, and a hemispherical LED element lens for emitting light generated from the LED element; The radius of curvature of the lens first output part may be 4 to 6 times the radius of curvature of the LED element lens.

In the LED lamp for the street lamp, a lens holder may be provided at an end portion of the lens unit facing the circuit board, and the circuit board may include a substrate lens holder corresponding part engaged with the lens holder.

According to another aspect of the invention, the unit housing, the circuit board disposed inside the unit housing, the LED element portion disposed on the circuit board; And a lens unit disposed to face the LED element unit and emitting light generated from the LED element unit, wherein the lens unit is a cross section in any one or more planes perpendicular to the circuit board around the LED element unit. A street light LED unit having a plurality of street light LED lamps having an asymmetrical asymmetric cross section, and an LED street light having a street light housing in which a plurality of the street light LED units are disposed.

The LED street light includes a lens LED accommodating part accommodating the LED element part on one surface facing the LED element part of the lens part, and the lens part; the lens first output part which emits light generated from the LED element part. And a lens second output part integrally formed with the lens first output part and having a radius of curvature different from that of the lens first output part.

In the LED street light, the unit housing rotation shaft is disposed at one end of the unit housing,

One side of the streetlight housing may be provided with a unit housing rotation knob connected to the unit housing rotation shaft.

An LED lamp for a street lamp and an LED street lamp having the same according to the present invention having the configuration as described above have the following effects.

First, an LED lamp for a street lamp and an LED street lamp having the same according to the present invention generate a light having a light distribution structure that increases the irradiation amount of light to a predetermined area through a lens unit having an asymmetrical cross-sectional shape, so that the driver's front attention during night driving Can be improved.

Secondly, an LED lamp for a street lamp and an LED street lamp having the same according to the present invention form a dead zone of light in a space between LED street lamps spaced apart from each other by forming a rectangular irradiation area with respect to a driving direction of a road surface. Can be prevented.

Third, the LED lamp for street light according to the present invention and the LED street light having the same, minimize the light output to the side of the side in which a separate side lamp is installed, and oriented toward the side of the road to maximize the efficiency of the performance of the street lamp itself You can also

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it will be understood by those of ordinary skill in the art that various changes in form and details may be made therein without departing from the scope of the present invention. Accordingly, the true scope of the present invention should be determined by the technical idea of the appended claims.

Hereinafter, an LED lamp for a street lamp and an LED street lamp having the same will be described with reference to the drawings.

FIG. 1 shows a schematic perspective view of an LED lamp 10 for a street lamp according to an embodiment of the present invention, FIG. 2 shows a schematic cross-sectional view taken along the line I-I of FIG. 1, and FIG. A schematic cross sectional view taken along line II-II of FIG. 1 is shown, FIG. 4 shows a schematic three-dimensional alignment curve of an LED lamp 10 for a street lamp according to an embodiment of the present invention, and FIG. 5 shows the present invention. An orientation curve with respect to the yz and xz planes of the LED lamp 10 for a street lamp according to an embodiment of the present invention is shown, and FIG. 6 schematically illustrates an xy plane of the LED lamp 10 for a street lamp according to an embodiment of the present invention. A phosphorus alignment curve is shown, and FIGS. 7 to 10 show state diagrams showing a schematic light emission state of the LED lamp 10 for a street lamp according to an embodiment of the present invention. In addition, FIG. 11 is a layout view showing an arrangement state of the LED street light 1 having the LED lamp 10 for streetlights according to an embodiment of the present invention, Figure 12 is a street lamp according to an embodiment of the present invention A schematic partial perspective view of an LED street light 1 with an LED lamp 10 for the purpose is shown, and FIG. 13 shows an LED street light 1 with an LED lamp 10a for a street lamp according to an embodiment of the present invention. A schematic perspective view of the LED unit 20 for a street lamp is shown, and in FIG. 14, a schematic partial cross-sectional view of an LED street light 1 having an LED lamp 10a for a street lamp according to an embodiment of the present invention is shown. FIG. 15 is a schematic layout showing an arrangement state of the LED street light unit 20 of the LED street light 1 including the LED lamp 10a for the street lamp according to an embodiment of the present invention, and FIG. Work of invention A schematic partial state diagram of the LED street light unit 20 of the LED street light 1 having the LED lamp 10 for street lamps according to the embodiment is shown, and FIG. 17 shows a LED for street light according to an embodiment of the present invention. The floor roughness distribution at the column height 10M of the 120W class LED street light 1 having the lamp 10 is shown, and FIG. 18 is an LED street light having the LED lamp 10 for streetlights according to an embodiment of the present invention. A schematic arrangement of (1) and an arrangement diagram of road conditions are shown, and in FIG. 19, under the conditions of FIG. 18 of the 120W class LED street light 1 including the LED lamp 10a for a street lamp according to an embodiment of the present invention. Road surface roughness distribution is shown. In addition, FIG. 20 shows the illuminance distribution under the condition of FIG. 18 of a 120W LED street light using a general LED lens or a reflector.

The light intensity intensity diagram at the road surface of the LED street light 1 is shown.

LED lamp 10 for a street lamp according to an embodiment of the present invention is provided with a circuit board 200, the LED element unit 100, the lens unit 300 is in electrical communication with the circuit board 200 input Light generated from the LED device unit 100 is emitted to the outside through the lens unit 300 according to the electrical signal.

The LED device unit 100 includes an LED device 110, an LED base 120, an LED terminal 130, and an LED device lens 140. The LED element 110 is disposed on one surface of the LED base 120, the LED terminal 130 is disposed at the side end of the LED base 120, the LED base 120 through the LED terminal 130 is Electrical communication with the circuit board 200 is achieved. Therefore, the LED element 110 disposed on the LED base 120 according to the electrical signal input through the LED terminal 130 generates light and emits it. Light generated by the LED device 110 is emitted through the hemispherical LED lens 140 disposed on the LED base 120 to the top of the LED device 110. Since the configuration of the LED device unit 100 is the same as the conventional LED device unit, a detailed description thereof will be omitted.

The circuit board 200 includes predetermined circuit wiring and an electric device (not shown), and the LED device unit 100 is disposed on one surface of the circuit board 200. The circuit board 200 may be in electrical communication with a connector (not shown) to receive a power signal input through a connector (not shown) from an external power supply device. The circuit board 200 may be formed of a metal core substrate in this embodiment to smoothly attenuate heat generated in the process of generating light from the LED device unit 100. In some cases, heat sinks (not shown) such as heat pipes, heat dissipation fins, etc. may be further disposed on the other surface of the circuit board 200 implemented as a metal core circuit board to further promote attenuation of heat generated from the LED element unit 100. It may be.

The lens unit 300 is disposed to face the LED element unit 100, and the lens unit 300 emits light generated from the LED element unit 100 to the outside. The lens unit 300 may be formed of a material such as silicon, glass, polymethyl methacrylate (PMMA), polycarbonate, or the like. The lens unit 300 may be formed of a transparent material having a predetermined strength and excellent heat resistance. Various choices are possible in the range.

The lens unit 300 provided in the LED lamp 10 for street light of the present invention has an asymmetric cross section, the asymmetric cross section of the lens unit 300 of the LED lamp 10 is the LED element unit ( It is provided in any one or more of the plane perpendicular to the circuit board 200 with respect to 100. That is, when the LED lamp 10 for a street lamp shown in FIG. 1 takes a cross section in a plane including the center of the LED element unit 100 in a plane parallel to the xz plane, the LED lamp 10 for a street lamp is shown in FIG. 2. Asymmetric cross-sectional shape (Sasym) as shown in FIG. The light generated by the LED device unit 100 through such a configuration emits light that is deflected in a specific direction through a predetermined refraction or reflection process in the process of being emitted to the outside through the lens unit 300. . Through such an asymmetric cross-sectional shape (Sasym) structure, the light from the LED element portion 100 passing through the lens portion 300 forms an output of light deflected in a specific direction rather than an uniform emission.

More specifically, the lens unit 300 is provided with a lens LED receiving unit 310, the groove type on one surface toward the circuit board 200 and / or the LED element unit 100 to one surface of the lens unit 300. It consists of. The LED element unit 100 is disposed in the lens LED accommodating part 310, and the lens LED accommodating part 310 has a larger size than that of the LED element part 100 to provide an LED lens of the LED element part 100. 140 is spaced apart from the inner surface of the lens LED receiving portion 310 to ensure that the LED element portion 100 is stably disposed on the circuit board 200 without interference with other components of the lens portion 300. Make it possible.

In addition, the lens unit 300 includes a lens first emitter 320 and a lens second emitter 330, and the lens first emitter 320 and the lens second emitter 330 are adjacent to each other. Is placed. In the present exemplary embodiment, the lens first output unit 320 and the lens second output unit 330 are integrally formed, and various configurations are possible in a range of light distribution to a predetermined specific region. The light generated by the LED element unit 100 is emitted through the lens first output unit 320 and the lens second output unit 330, and a large portion of the light emitted through the lens unit 300 is the first lens 1. It is emitted through the exit unit 320. The difference in the emission rate of the light generated by the LED device unit 100 is formed from different radii of curvature of the lens first output unit 320 and the lens second output unit 330. That is, as shown in FIG. 2, when the lens unit 300 looks at a region where light is emitted from the LED element unit 100, an upper surface of the lens first emission unit 320, which is a region where light is emitted, is a lens. The lens first output part of the emission surface Sasym of the first emission part 320 and the upper surface of the lens second emission part 330, that is, the emission surface Sasym of the lens second emission part 330. The size of the emission surface Sasym 1 of 310 is greater than the size of the emission surface Sasym 2 of the lens second emission portion 330.

In addition, the lens LED accommodating part 310 includes a lens LED first accommodating part H1 and a lens LED second accommodating part H2, and the lens LED first accommodating part H1 is formed from the LED element part 100. The light is emitted in a direction opposite to the arrangement area of the lens second emission unit 330 based on a line segment (line AA or the like) perpendicular to the circuit board 20, and the lens LED second accommodation unit ( H2 is connected to the lens LED first accommodating part H1, and the connection point Ho of the lens LED first accommodating part H1 and the lens LED second accommodating part H2 is the center of the LED element part 100. It is disposed so as to be close to the end side of the lens LED second emitting portion (H2) relative to a plane perpendicular to the circuit board, that is, including a line AA and perpendicular to the ground of FIG. That is, as shown in FIG. 2, the lens LED first accommodating part H1 and the lens LED second accommodating part H2 are connected to each other to form a single lens LED accommodating part 310. The connection point Ho of the lens LED first accommodating portion H1 and the lens LED second accommodating portion H2 on the asymmetrical surface of, i.e., the ground as shown in FIG. It is disposed at a position spaced apart from the line AA toward the lens second output portion 330 by Q so as to be close to the end side of the lens second output portion 330 based on the line AA. As seen from the asymmetrical cross-section of the lens portion 300, the lens LED first receiving portion H1 is centered on the connection point Ho of the lens LED accommodating portion 310 and the circuit board 200 at the connecting point Ho. Light is emitted in a direction opposite to the arrangement area of the lens second output unit 330, that is, to the right of the line Lo-Lo, centered on a line Lo-Lo formed perpendicular to the lens Lo, and the lens LED second accommodating part H2 is formed. At the connection point Ho, light is emitted toward the lens second output unit 330 side, that is, to the left of the line Lo-Lo, around the line Lo-Lo formed perpendicular to the circuit board 200. That is, light generated from the LED device 110 of the LED device unit 100 is radially output around the point OL. In this case, the light generated and output from the LED device 110 may form an irradiation angle of 120 ° to 140 °, which may vary depending on the performance of the LED device 110 provided.

The LED lens 140 has a hemispherical shape so that the light output in the radial direction is almost generally straight. The light passing through the LED lens 140 goes straight in the internal space of the lens LED accommodating part 310 to form a predetermined incident angle with each of the lens LED first and second accommodating parts H1 and H2 and to the lens part 300. Enter. In this case, the lens unit 300 forms a denser medium than air in the lens LED accommodating unit 310, and thus is refracted at a predetermined angle with respect to the incident angle and introduced into the lens unit 300. When the light passing through the lens unit 300 is emitted to the outside through the exit surface (Sasym; Sasym, 1, Sasym, 2) of the lens unit 300, the light enters air, which is a medium smaller than the material of the lens unit 300. As a result, an exit angle of an angle larger than a predetermined incident angle (entering angle from the lens unit 300 to the exit surface of the lens unit 300) is formed on the boundary surface of the lens unit 300 and is emitted to the outside. In the present embodiment, referring to FIG. 2 showing an asymmetric cross section, the light passing through the connection point Ho of the light output from the LED element 110 is refracted at the point Lo and exits perpendicular to the circuit board 200. (A). On the other hand, the light passing through the right region in FIG. 2 based on the line Lo-Lo formed perpendicularly to the circuit board 200 with respect to the connection point Ho among the light output from the LED element 110 is the lens second output unit. It is emitted in the right direction with respect to the end direction L1 of the lens first output part 320 which is the direction opposite to the arrangement area of 330, that is, the line Lo-Lo (b). In addition, the light passing through the left region of FIG. 2 based on the line Lo-Lo formed perpendicularly to the circuit board 200 via the connection point Ho among the light output from the LED element 110 may be the lens second output unit ( 330 is emitted toward the end side L2, that is, to the left direction based on the line Lo-Lo (c). Therefore, through the asymmetric structure and the structure of the lens LED receiving portion according to an embodiment of the present invention it is possible to output the light generated in the LED element portion to be deflected or concentrated in a specific region or a specific direction.

In addition, the lens unit 300 may further include a component for increasing the emission of light in a specific region or a specific direction. As shown in FIG. 2 and FIG. 3, the lens first emission reflecting surface 340 is disposed on the side of the lens first emission unit 320, and the lens first emission reflecting surface 340 is the LED element unit 310. Light emitted from the lens first output unit 320 to the LED surface of the lens first output unit 320 toward the LED element 100, that is, the light exits to the exit surface Sasym, 1. Reflect. That is, the lights d1, d2, and d3 generated and output from the LED element 110 are irradiated toward the lens first emission reflecting surface 340. The lights d1, d2, and d3 form incident angles of θ1, θ2, and θ3 toward the lens first emission reflecting surface 340, respectively, and a critical angle θcr formed by the material of the lens unit 300 is formed. , θ1 is smaller than θcr, θ2 is equal to θcr, and θ3 is greater than θcr, the light indicated by reference numeral d1 is partially refracted relative to the lens first output reflecting surface 340 to emit the lens first output. The light is refracted by the reflecting surface 340 to be emitted to the outside (d11), and the rest d12 is reflected from the lens first output reflecting surface 340 to be an upper surface of the lens first output part 320, that is, the lens first output part ( Proceed toward the exit surface (Sasym, 1) of 320. On the other hand, the light indicated by reference numeral d2 travels along the lens first exit reflecting surface 340, and the light indicated by reference numeral d3 is totally reflected on the lens first output reflecting surface 340, so that the lens first output unit It proceeds toward the upper surface of 320, that is, toward the exit surface Sasym, 1 of the lens first exit portion 320, and in the case of d3 in the case where it is larger than the critical angle, it is totally reflected and proceeds in the direction of light indicated by d31. Here, as described above, since a predetermined irradiation angle of the LED element unit 100 exists, the amount of light that is refracted by the lens first exit reflecting surface 340 and exits therethrough is considerably less, and most of the lens first exit reflecting surfaces is present. The total reflection at 340 allows the output through the exit surface Sasym 1 of the lens first output unit 320 to enhance a predetermined function of the lens unit for adjusting the orientation in a predetermined region or direction.

Meanwhile, as described above, the LED lamp 10 for a street lamp according to the present invention has a different radius of curvature of the lens first output unit 320 and the lens second output unit 330 from each other. The center of curvature radius of the lens first output unit 320 and the lens second output unit 330 on a plane including an asymmetrical cross-section of the lens unit 300 among the planes perpendicular to the circuit board 200. One or more of the vertical lines (lines BB and CC) including OR1 and OR2 are spaced apart from the centerline (line AA) of the LED element portion 100. As shown in FIG. 2, the lens first output unit 320 and the lens second output unit 330 each have a center of curvature radius indicated by reference numerals OR1 and OR2, and each center of curvature includes a circuit board ( It is disposed on a line segment (line BB and line CC) perpendicular to 200. Lines B-B and C-C including respective centers of curvature are disposed in parallel with the center line A-A of the LED element unit 100. In this embodiment, the lines B-B and C-C are spaced apart from the line A-A. With such a configuration, the light generated and output from the LED element unit 100 is fixed to the exit surfaces Sasym, 1, Sasym, 2 of the lens first output unit 320 and the lens second output unit 330. And it is possible to be oriented and output in a predetermined area or a predetermined direction without being output uniformly. In the present embodiment, the radius of curvature of the lens first output unit 320 is a plane on the plane including the asymmetrical cross-section of the lens unit 300 among the planes perpendicular to the circuit board 200 with respect to the LED element unit 100. It is indicated by ρ1, the radius of curvature of the lens second exit portion 330 is indicated by ρ2, ρ1 has a value smaller than ρ2. Through such a configuration, more light is output to the exit surface Sasym, 1 of the lens first output part 320, that is, the light is focused toward the predetermined area by condensing toward the lens first output part 320. You can focus your work. In the present embodiment, the LED lens 140 provided in the LED element unit 100 is provided in a hemispherical shape and the radius of curvature of the LED lens 140 has a radius of curvature indicated by reference numeral ρ0 around the center point OL. The radius of curvature rho 1 of the lens first output unit 320 forms a size ratio of 4 to 6 times the radius of curvature rho 0 of the LED lens 140. As described above, when the ratio of the size of the radius of curvature ρ1 of the lens first output unit 320 and the radius of curvature ρ0 of the LED lens 140 is smaller than 4, the lens first accommodating part H1 and the lens second accommodating body are accommodated. By bringing the position of the connection point H0 of the portion H2 closer to the center side of the LED element portion 100, that is, to the line AA side, the concentration of light in a predetermined area is weakened, and the lens first output portion 320 is reduced. When the ratio of the radius of curvature ρ1 to the size of the radius of curvature ρ0 of the LED lens 140 is greater than six times, the angle of refraction at the exit surface Sasym 1 of the lens first accommodating portion H1 is made small. As a result, the ratio of the radius of curvature ρ1 of the lens first output unit 320 to the radius of curvature ρ0 of the LED lens 140 may be in a range of 4 to 6 because it cannot perform a function of concentrating light to a predetermined region. It is preferable to have. However, this is an example of the present invention and the present invention is not limited thereto.

Through the above structure, the light output from the LED lamp 10 for streetlight according to the present invention forms a predetermined light distribution. 4 to 6 shows a light distribution curve of the LED lamp 10 for a street lamp according to an embodiment of the present invention. 4 shows a light distribution curve D represented by a three-dimensional curve, FIG. 5 shows a light distribution curve D1 on the yz plane and a light distribution curve D2 on the xz plane, and FIG. 6 a light distribution curve on the xy plane. (D3) is shown. As such, a uniform light distribution curve D1 having a bat shape is formed along the length direction of the lens unit 300 as illustrated in FIG. 3, but the asymmetric structure of the lens first and second lens exit portions is shown. The lens unit 300 has a light distribution curve emitted by the asymmetrical cross section as shown in FIG. 2 indicated by reference numeral D2. In addition, the light disposed on the road and irradiated toward the road due to the characteristics of the LED lamp 10 for the street light toward one side on the basis of the line mm in the longitudinal direction, as shown in Figure 6, toward the upper part in the present embodiment Light distribution can be concentrated. 7 to 10 show a state diagram in each direction in which light is emitted from the LED lamp 10 for a street lamp having a lens unit according to an embodiment of the present invention. Through the substructure, the LED lamp 10 for the street lamp may form a light distribution structure concentrated in a predetermined area.

On the other hand, the present invention may provide an LED street light (1) having the LED lamp 10 for the street light described above. 11 shows a predetermined road standard in which the LED street light 1 according to the embodiment of the present invention is disposed. In this embodiment, the total road width is 14m and the shoulder widths from both ends of the road are each 1m, and each lane Are set to have widths of 3.5m each. The LED street lamp 1 according to the present invention is disposed outside the shoulders on both ends of the road and supported through the street lamp post 7, the LED lamps for street lamps disposed at the end of the street lamp post 7 are shouldered toward the road from the shoulder outside. And a road 2m from the border of the shoulder and sidewalk, including the road.

The LED street light 1 according to the present invention is disposed at the boundary between the shoulder and sidewalks by the street lamp post 7 as described above, and the street lamp housing 2 is disposed at the end of the street lamp post 7 and is shown in FIG. 12. As shown, the street lamp housing 2 is connected to and supported by the street lamp post 7 through the street lamp connector 3. One or more LED units 20 for street lamps are disposed in the street lamp housing 2. The LED unit 20 for a street light includes a unit housing 21, a circuit board 200a, and a plurality of LED lamps 10a for the street lamps. The LED lamps 10a for the street lamps are respectively provided in the plurality of unit housings 21. Except for the plurality of LED lamps 10a for street lamps disposed on the circuit board 200a to be arranged, the structure is the same as the LED lamp 10a for street lamps in the above-described embodiment.

The unit heat dissipation fin 23 is provided on the outer circumferential surface of the unit housing 21, and the unit heat dissipation fin 23 is formed in contact with the circuit board 200a to generate light from the LED lamp 10a for the street lamp. The heat is transferred to the unit heat dissipation fin 23 to increase the heat dissipation area through the heat transfer process, and through the heat dissipation process at the unit heat dissipation pin 23, the heat generated from the LED lamp 10a for the street lamp can be quickly released. In some cases, the unit housing flow port 25 may be further disposed outside the unit housing 21 to increase the heat dissipation effect through the flow of air.

The unit housing pivot shaft 22 is disposed on one side of the unit housing 21, and the unit housing pivot shaft 22 is rotatably disposed in the street lamp housing 2. The unit housing pivot 22 is connected to the unit pivot knob 5 through the pivot shaft through hole 6 formed on the side of the streetlight housing 2, and the unit housing 21 in which the unit housing pivot 22 is disposed. Rotating protrusions (not shown) are formed at the other end of the support) to be rotatably supported by the street lamp housing 2. Therefore, when the user rotates the unit rotation knob 5, the unit housing 21 connected to the unit housing rotation shaft 22 rotates by a predetermined angle with respect to the street lamp housing 2. In some cases, a rotation shaft detent protrusion 22a is formed on the outer circumferential surface of the unit housing rotation shaft 22, and a detent corresponding groove 8 is formed inside the rotation shaft through hole 6 corresponding thereto. The detent elastic member 27 is disposed in the detent corresponding groove 8, and the detent elastic member 27 may be implemented as a coil spring. One end of the detent elastic member 27 is supported by the detent corresponding groove 8 and the detent ball 28 is disposed at the other end. Therefore, when the user rotates the unit rotation knob 5, the unit housing rotation shaft 22 rotates together, and at this time, the rotation shaft detent protrusion 22a disposed on the outer circumference of the unit housing rotation shaft 22, By the engagement of the detent ball 28 elastically supported by the tent elastic member 27 it is possible to adjust the detent operation by a predetermined rotation angle.

 As shown in FIG. 15 and FIG. 16, a plurality of street light LED units 20 are disposed in the street light housing 2. In the present embodiment, five street light LED units 20 are disposed in the street light housing 2. 20 street light LED lamps 10a are disposed in each LED street light unit 20 so that a total of 100 street light LED lamps 10a are disposed per LED street light 1. FIG. 17 shows a bottom roughness distribution chart of light emitted from the 120W LED street light 1 of the present invention with respect to the irradiation area At at 10M height, where the position indicated by the reference symbol Ac is the irradiation area At. The center of the, that is, the central position of the LED unit for the street lamp and the plurality of LED lamps for the street lamp provided in the LED street light (1). Therefore, the LED street light 1 according to the present invention is irradiated with a long rectangular shape but the highest light irradiation area occupies the position eccentric from the LED street light (1).

18, 19 and 20 are a reference layout and illuminance distribution chart for measuring the amount of light irradiated when the LED street light 1 of the present invention is disposed on the road, and the LED street lamp to which a general LED lens and a reflector are applied The illuminance distribution is shown, wherein the street lamp housing 2 of the LED street light 1 according to the embodiment of the present invention is supported by the street lamp post 7 with an interval of a on the road of width b and is bounded by the sidewalk and the road. It is arrange | positioned so that there may be space | interval u from the road side. In this embodiment, b is set to have a length of 16m, a is 25m, u is 2m and the street light housing 2 is set to have a height of 10m from the road surface. Accordingly, the light quantity measurement result on the road surface irradiated by the LED street light 1 is as shown in FIG. Here, the LED lamp 10a for the street lamp of the LED street light 1 was measured based on 120W, where the output of the LED lamp 10a for the street lamp may vary depending on test conditions without being limited thereto.

Road lighting test of 120W LED street light Average roughness
(E av) Illuminance
(E mx) Illuminance
(E mn) Comprehensive bacteria system
(U0) 1st axis
Leveling system
U1 (1) 2nd axis
Leveling system
U1 (2) LED street light having light distribution according to the present invention 31.7 36.7 24.2 0.76 0.88 0.91 LED street light to which conventional simple LED lens or reflector is applied 20.5 44.0 7.1 0.35 0.18 0.33

As described above, the LED street light 1 according to the present invention concentrates the light output to the side of the road to increase the average roughness on the road surface, compared to the LED streetlight to which a general LED lens or reflector is applied, the first lane and two roads It also increases the uniformity on the lane side, and the overall uniformity of the road lighting standard according to KSA-3701, and the value of the lane axis uniformity value larger than the value of 0.5 to 0.7, so that the light is spread evenly on the road. You can also significantly improve your acquisition.

The above embodiments are examples for describing the present invention. The present invention is not limited thereto, and a heat spreader such as a heat pipe may be further provided in the unit housing within a three-dimensional heat dissipation structure. The streetlight LED unit disposed in the central area of the streetlight LED unit may include a streetlight LED unit without a lens unit, and two streetlight LED units each on both sides may be configured to have the same structure as in the above embodiment. Various modifications are possible in the range provided with the lens part which has an asymmetric cross section in the LED lamp for street lamps.

1 is a schematic perspective view of an LED lamp for a street lamp according to an embodiment of the present invention.

FIG. 2 is a schematic cross-sectional view taken along the line I-I of FIG. 1.

3 is a schematic cross-sectional view taken along the line II-II of FIG.

Figure 4 is a schematic three-dimensional alignment curve of the LED lamp for streetlight according to an embodiment of the present invention.

5 is an orientation curve with respect to the y-z and x-z plane of the LED lamp for streetlight according to an embodiment of the present invention.

Figure 6 is a schematic orientation curve of the x-y plane of the LED lamp for streetlight according to an embodiment of the present invention.

7 to 10 is a state diagram showing the light emission state of the schematic of the LED lamp for streetlight according to an embodiment of the present invention.

FIG. 11 is a layout view illustrating an arrangement state of an LED street light including an LED lamp for a street lamp according to an exemplary embodiment of the present disclosure. FIG.

12 is a schematic partial perspective view of an LED street light having an LED lamp for streetlights according to an embodiment of the present invention.

FIG. 13 is a schematic perspective view of an LED street light unit of an LED street light having an LED lamp for a street lamp according to an embodiment of the present invention.

14 is a schematic partial cross-sectional view of an LED street light having an LED lamp for a street lamp according to an embodiment of the present invention.

FIG. 15 is a schematic layout illustrating an arrangement state of a LED street light unit of an LED street light having an LED lamp for streetlights according to an embodiment of the present invention.

FIG. 16 is a schematic partial state diagram of an LED street light unit of an LED street light having an LED lamp for a street lamp according to an embodiment of the present invention.

FIG. 17 is a bottom roughness distribution diagram at a column height of 10M of a 120W LED streetlight separately including a LED lamp for streetlight according to an embodiment of the present invention.

FIG. 18 is a schematic layout of an LED street light having an LED lamp for a street lamp and a road condition according to an embodiment of the present invention. FIG.

19 is a bottom roughness distribution diagram in the condition of FIG. 18 of the 120W LED street light having the LED lamp for streetlight according to an embodiment of the present invention.

20 is a bottom roughness distribution diagram under the condition of FIG. 18 of a 120W class LED street light using a conventional conventional simple LED lens or a reflector.

* Description of the symbols for the main parts of the drawings *

1 ... LED street light 2 ... street light housing

10 ... LED lamp for street light 100 ... Housing

200 ... circuit board 300 ... LED lamps for streetlights

Claims (11)

Circuit board; An LED element unit disposed on the circuit board; And a lens unit disposed to face the LED element unit and emitting light generated from the LED element unit. And the lens unit has an asymmetrical cross-section having an asymmetrical cross section in at least one of the planes perpendicular to the circuit board with respect to the LED element unit. The method of claim 1, One surface facing the LED element portion of the lens portion is provided with a lens LED receiving portion for receiving the LED element portion, The lens unit; A lens first emission unit configured to emit light generated from the LED element unit; A lens second output part integrally formed with the lens first output part and having a radius of curvature different from that of the lens first output part; The LED lamp for the street lamp, characterized in that the light emitting surface of the lens first emitting portion is larger than the light emitting surface of the lens second emitting portion. 3. The method of claim 2, The exit surface of the lens first exit part is larger than the exit surface of the lens second exit part, The lens LED receiver: A lens LED first accommodating part configured to emit light generated from the LED element part in a direction opposite to an arrangement area of the lens second output part based on a line segment perpendicular to the circuit board; A lens LED second accommodating part connected to the lens LED first accommodating part, The connection point of the lens LED first accommodating part and the lens LED second accommodating part is disposed to be close to an end portion of the lens LED second emitting part based on a plane perpendicular to the circuit board and including a center of the LED element part. LED lamp for street light which is characterized by. The method of claim 3, wherein On the side surface of the lens first exit portion, the lens first exit half reflects the light generated from the LED element portion and introduced into the lens first exit portion to be emitted through the opposite surface of the LED element portion to one surface of the lens first exit portion LED lamp for street light characterized by having a slope. 3. The method of claim 2, At least one vertical line including a center of curvature radius of the lens first and second lens exit portions on a plane perpendicular to the circuit board around the LED element portion is spaced apart from the center line of the LED element portion. LED lamp for street lamp The method of claim 5, LED curvature of the lens first exit portion is smaller than the radius of curvature of the lens second emitter LED lamp. The method of claim 5, The LED device portion: An LED element disposed on the circuit board and in electrical communication with the circuit wiring; It is provided with a hemispherical LED element lens for emitting the light generated from the LED element, The curvature radius of the lens first exit portion is LED lamp for street light, characterized in that 4 to 6 times the radius of curvature of the LED element lens. The method of claim 1, A lens holder is provided at an end portion of the lens unit facing the circuit board. The LED lamp for a street light, characterized in that the circuit board is provided with a substrate lens holder counterpart engaging with the lens holder. Unit housing, A circuit board disposed in the unit housing; An LED element unit disposed on the circuit board; And a lens unit disposed to face the LED element unit and emitting light generated from the LED element unit, wherein the lens unit is a cross section in any one or more planes perpendicular to the circuit board around the LED element unit. A LED unit for a street lamp having a plurality of LED lamps for street lamps having an asymmetrical asymmetric cross section, and LED street light having a street light housing in which a plurality of the LED unit for street light is disposed. The method of claim 9, One surface facing the LED element portion of the lens portion is provided with a lens LED receiving portion for receiving the LED element portion, The lens unit; A lens first emission unit configured to emit light generated from the LED element unit; And a lens second output part formed integrally with the lens first output part and having a radius of curvature different from that of the lens first output part. The method of claim 9, One end of the unit housing is disposed in the unit housing rotation shaft, One side of the street light housing, the LED street light comprises a unit housing rotation knob connected to the unit housing rotation shaft.

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