TWI390147B - Road illumination device - Google Patents

Abstract

The present invention relates to an anti-glare road illumination device for lighting a road. The illumination device includes at least one light source which comprises a light emitting diode and at least one optical element coupled to the at least one light emitting diode. The at least one optical element is configured to make light emitted from the at least one light emitting diode deflected to two opposite sides of the at least one light source along a first direction that is perpendicular to an extending direction of the road to from a winglike distribution curve. Thus the light which has a large light intensity from the at least one light emitting diode emits towards two sides of a glared area along the first direction. The at least one optical element is configured to make light emitting from the at least one light emitting diode deflected to a car going side with a predetermined angle along a second direction parallel to the extension direction of the road.

Description

Road lighting

The present invention relates to a lighting device, and a road lighting device having a function of preventing glare.

When a vehicle enters or exits a tunnel, a sudden change in brightness can cause a "black hole effect" or "white hole effect" in the driver's vision, thereby causing a driving safety hazard. In order to solve this safety problem, lighting fixtures should be arranged in the road tunnel. As shown in FIG. 1, the tunnel 100 is generally arcuate in cross section, and the luminaire 101 is disposed at the center of the inner wall surface of the tunnel 100, and the light emitted by the luminaire 101 is projected toward the road surface 102 centering on itself.

In the prior art, it is effective to realize that the radiation range of the lamp 101 in the X direction in which the vehicle travels is larger than the radiation range in the Y direction perpendicular to the X direction. The light utilization efficiency of the lamp 101 is improved. However, the radiation range formed by the luminaire 101 in the X direction is still symmetrically distributed around the luminaire 101 itself, that is, the illuminating angles θ 1 and θ 2 of the luminaire 101 to the sides thereof in the X direction are equal, usually θ 1 = θ 2 = 70 degrees. Here, the radiation angle may also be referred to as a half-peak side angle, which is an angle obtained by measuring half of the maximum light intensity toward the left and right sides centering on the vertical road surface, that is, the light emitted by the light source. The intensity is the angle between the light of 50% of the maximum luminous intensity on the plane and the vertical line. Referring to FIG. 2 , the light distribution curve of the lamp 101 in FIG. 1 in the X direction parallel to the running of the vehicle, wherein the light intensity of the point A corresponding to the light is 50 of the maximum light intensity of the lamp 101 between 0 degrees and 90 degrees. %, the light intensity of point B corresponds to the maximum light intensity of the lamp 101 in the range of 0 to 90 degrees, and the radiation angle of the lamp 101 is approximately equal to 70 degrees. See Figure 3, when the light When the source 101 is positioned above the human eye 104, the light source 101 tends to cause direct glare to the human eye 104 from a range of between 45 and 85 degrees from the vertical plane 105 where the human eye 104 is located. It can be seen that the conventional lamp 100 in the tunnel 100 causes direct glare to the driver's eyes.

A road lighting device that can effectively reduce glare will be described below by way of example.

A road lighting device comprising at least one light source for illuminating a road surface, the at least one light source comprising a light emitting diode and at least one optical component matched with the light emitting diode, the optical component extending perpendicular to the road surface The light emitted by the at least one light source is laterally deflected toward the at least one light source to form a wing-shaped light distribution curve, so that the light having a larger light intensity is respectively located on both outer sides of the glare region and extends parallel to the road surface. The light emitted by the at least one light source is deflected toward the driving side away from the side by a predetermined angle.

Compared with the prior art, when the road surface illumination device is irradiated to the road surface, the light is deflected toward the lateral direction of the at least one light source in a direction perpendicular to the road surface to form a wing-shaped light distribution curve, so that the light intensity is large. The light rays are respectively located on both outer sides of the glare region, so that the light intensity in the glare region near the axis of the light source is weakened without causing direct glare to the driver of the vehicle; the light is directed away from the side in the direction parallel to the road surface. When the vehicle is driving on the road, the light intensity near the side of the vehicle will not exceed the range of the human eye, and will not affect the driver's driver's direct glare, thus effectively ensuring the driver's driving safety.

The embodiments of the present invention will be further described in detail below with reference to the drawings.

Please refer to FIG. 4 , which is a schematic diagram of a state in which the lamp 21 is installed in the tunnel 20 according to the first embodiment of the present invention. The tunnel 21 has an arcuate cross section and includes an arcuate inner wall surface 23 that is disposed above the road surface 22 and opposite the road surface 22. The road surface 22 includes a first lane 221 and a second lane 222 respectively located on the left and right sides, and the first lane 221 and the second lane 222 are respectively for one-way driving of the vehicle. A plurality of lamps 21 are mounted at equal intervals in the X direction extending along the tunnel 21 in the upper and lower sides of the inner wall surface 23, and the lamps 21 on the left and right sides are mainly used for the first and second lanes in the tunnel 20 adjacent to the corresponding sides. 221, 222 for illumination. Preferably, the inner wall surface 23 is a rough surface, so that the light that is partially emitted on the inner wall surface 23 is diffusely reflected or diffused, so that the light is relatively uniform and presents a relatively comfortable light illumination environment. The rough inner wall surface 23 can be formed by sandblasting.

The luminaire 21 includes a flat circuit board (not shown) and a plurality of solid state light sources 25 mounted on the circuit board. Referring to FIG. 5, each light source 25 includes a light emitting diode 250 and an optical component mated with the light emitting diode 250. The optical component includes a lens 251 and a mirror 252. The lens 251 includes a bottom surface 253, a "V" shaped top surface 254 opposite the bottom surface 253, and a side surface 255 connecting the bottom surface 253 and the top surface 254. A receiving chamber 256 for receiving the LEDs 250 is recessed in the center of the bottom surface 253 in the direction of the top surface 254. The light-emitting diode 250 has a central axis H, and the light-emitting diode 250 is disposed at a geometric center of the bottom of the lens 251, and the lens 251 is centrally symmetric by the central axis H. The side surface 255 is provided with a plurality of zigzag optical microstructures 257 arranged along the central axis H direction. . Each of the optical microstructures 257 includes a first inclined surface 2571 and a second inclined surface 2572 intersecting the first inclined surface 2571. The first inclined surface 2571 and the second inclined surface 2572 intersect at an end away from the central axis H to form a Sharp angle. The top surface 254 is a quadric surface. The light emitting diode 250 is optically coupled to the lens 251. That is, the light emitted by the light emitting diode 250 directly enters the lens 251 and is emitted through the optical action of the lens 251. Wherein, a portion of the light emitted by the light-emitting diode 250 is directed toward the top surface 254, is totally reflected at the top surface 254, and is emitted through the side surface 255 at an angle of substantially 90 degrees to the central axis H, and another portion of the light is directly incident to the side 255 via Side 255 exits. Therefore, the light emitted through the lens 251 is offset from the central axis H by an angle such that the light emitted by the light source 25 is deflected toward the lateral direction of the light source 25 in the Y direction extending perpendicular to the road surface to form an airfoil of the airfoil. The curve is such that the range in which the light having a large intensity of light in the light of the light source 25 irradiated on the road surface 22 is concentrated is changed.

Generally, in the case where the relative position between the driver's eyes of the vehicle traveling on the road surface 22 and the light source 25 is determined, the range from 45 degrees to 85 degrees from the vertical plane of the eye is an angle range in which direct glare is easily generated. Therefore, it is defined as a glare area. In a specific implementation, when the light source 25 is located above the road surface 22 and is determined relative to the eye position of the driver of the vehicle traveling on the road surface 22, the light emitted from the light source 25 via the lens 251 may be laterally deflected away from the central axis H. At a certain angle, therefore, by adjusting the lens 251, the angle of the light deflected may be such that most of the light emitted by the light source 25 is deflected and located outside the glare area, so that the light intensity of the light in the glare area is weakened, so that Reduce or even prevent the generation of glare. Wherein, most of the light is also the light emitted by the light source 25. The light with a relatively high light intensity in the line assumes that the light intensity of the light that can directly glare when the light is directly directed to the eye is a certain value. Then, the light whose light intensity is greater than the certain value belongs to the light with a relatively high light intensity. Further, since the lamp 25 is mounted on both sides of the inner wall surface 23 of the tunnel 20 for illumination, and the inner wall surface 23 of the tunnel 20 is arcuately disposed above the road surface 22, it extends perpendicular to the road surface 22. The angle of the light emitted through the lens 251 in the Y direction is offset from the central axis H such that a part of the light emitted from the light source 25 can be directly incident on the inner wall surface 23 around the light source 25, and the light is diffused on the inner wall surface 23 After reflection or diffusion reflection, it exits to the road surface 22, thus forming a uniform illumination environment. Preferably, most of the light emitted by the light source 25 in the Y direction extending perpendicular to the road surface 22 is deflected with respect to the central axis H and concentrated on both sides of the glare region, respectively, and the light intensity of the light on the central axis H is less than its maximum One-third of the light intensity prevents direct glare from being directed at the driver of the vehicle on the road surface 22 directly. Since the side surface 255 is formed with the zigzag optical microstructure 257, when the light of the light source 25 is emitted by the first inclined surface 2571 or the second inclined surface 2572 of the optical microstructure 257, refraction is generated on the first inclined surface 2571 or the second inclined surface 2572. Further, the light emitted from the side surface 255 is concentrated in a predetermined non-glare area, and more light can be diffusely reflected or diffused and reflected to the inner wall surface 23 to form a uniform illumination environment.

The mirror 252 is located on one side of the lens 251 and includes an arcuate reflecting surface 2521 that faces the light emitting diode 250 and is used to reflect light. The projection of the mirror 252 on the plane of the light-emitting diode 250 overlaps with the projection of the top surface 254 of the lens 251 on the plane of the light-emitting diode 250. The projection of the mirror 252 on the plane of the LED 220 partially overlaps the light-emitting surface of the LED 230. The mirror 252 is configured to deflect the light emitted by the LED 230 in the X direction in which the road surface 22 extends in the lateral direction of the lamp 21, so that the light that the lamp 21 illuminates the road surface 22 extends along the X direction of the road surface 22. The light distribution curve is an asymmetric light distribution curve. Referring again to FIG. 4, in use, the luminaire 21 is disposed above the road surface 22. The axis 211 of the luminaire 21 divides the lanes 221, 222 of the road surface 22 into the approaching side 265 and away from the road along the X direction in which the road surface 22 extends. Side 266, the vehicle traveling on road surface 22 is driven toward the away side 266 by the approaching side 265. The light intensity of the light source 25 illuminating the road surface 22 causes the light intensity of the light source 25 to illuminate the road surface 22 in the X-direction light distribution curve of the road surface 22 to be offset from the center axis H by a certain angle, such as a 45 degree angle, toward the traveling away side 266. Thus, the light intensity of the light illuminating the road surface with light from the light source 25 on the approaching side 265 is much less than the light intensity of the light traveling away from the side 266. As the vehicle travels in the X direction extending along the road surface 22, the direction in which direct glare is likely to occur typically occurs in front of the driver of the vehicle, that is, when the driver of the vehicle is on the approach side 265, from the vertical of his eye. The surface is deflected in a range between 45 degrees and 85 degrees. Therefore, the light illuminating the road surface 22 by the light source 25 is deflected toward the traveling away side 266 by the mirror 252, so that the light intensity of the approaching side 265 is weakened when the driver is in the driving. When approaching the side 265, the eye is not stimulated by the light beyond the normal range and is not affected by the direct glare. When the vehicle is approaching the side 265 toward the driving away from the side 266, the driver is facing away from the direction of the light, which is also Will not be affected by direct glare. Preferably, the mirror 252 causes the light of the light source 25 to illuminate the road surface 22 to be deflected toward the traveling away side 266 in the direction along the road surface 22, and then leans on the road. The light intensity at the 45 degree angle of the proximal side 265 is less than one sixth of the maximum light intensity of the light traveling away from the side 266. Preferably, the light intensity at a 45 to 85 degree angle of the approaching side 265 of the vehicle is less than one sixth of the maximum light intensity of the light traveling away from the side 266.

Please refer to FIG. 6 , which is a light distribution graph of the light source 25 in the Y direction extending perpendicular to the road surface, and point C shows the lens 251 such that the light intensity emitted by the light emitting diode 250 in the direction of the central axis H is about 280. Candela (cd), point D shows that the maximum light intensity of the light emitted by the light-emitting diode 250 is about 890 candelas (cd), and the light intensity of the light emitted by the light-emitting diode 250 on the central axis H is less than its maximum light intensity. One third of the. Therefore, when the light sources 25 are respectively located at a certain height on both sides of the inner wall surface 23 of the tunnel 20, it is possible to obtain that the light having a greater intensity of light incident on the road surface 22 is mainly located on both sides of the glare region, and does not directly travel in the lane. The driver of the vehicle on 221, 222 has the effect of direct glare. Please refer to FIG. 7 , which is a light distribution curve of the light source 25 in the extension X direction of the road surface 22 , and point E shows the mirror 252 such that the maximum light intensity of the light emitted by the light-emitting diode 250 in the extension X direction of the road surface is relatively The central axis H is offset from the side 266 away from the side 266 by an angle of substantially 50 degrees. The point E indicates that the maximum light intensity of the light emitted by the light-emitting diode 250 on the away side 266 is approximately 750 candelas (cd), while the point F shows the approach of the vehicle. The light intensity at the 45 degree angle of side 265 is approximately 100 candelas (cd). Therefore, when the driver is located on the approaching side 265, the eye is not stimulated by the light beyond the normal range and is not affected by the direct glare, and when the vehicle is approaching the side 265 from the driving side toward the driving away side 266, the driver's back It is directed toward the light and it is not affected by direct glare.

FIG. 8 shows a light source 35 of a luminaire 21 according to a second embodiment of the present invention, which differs from the first embodiment in that the structure of the lens 351 in the light source 35 is different. The lens 351 has a circular plate-like profile including a planar light incident surface 350 and a light exit surface 353 opposite to the light incident surface 350. The light source 35 has an axis of symmetry I centered on the position of the light-emitting diode 250. The lens 351 is disposed above the light-emitting diode 250, and the light-incident surface 350 is disposed facing the light-emitting diode 250, and the light-emitting surface 352 is provided with a plurality of annular strip-shaped zigzag protrusions 352. Each of the protrusions 352 includes a first serration surface 3521 and a second serration surface 3522 connected to the first serration surface 3521 , wherein the first serration surface 3521 is located on a side of the corresponding protrusion 352 away from the axis of symmetry I. And perpendicular to the light incident surface 350. For each protrusion 352 on the same side of the axis of symmetry I, the second serration surface 3522 connects the first serration surface 3521 of the adjacent side protrusions 352, respectively. As shown by the arrow in FIG. 8, the light emitted by the LED 230 is incident on the lens 351 through the light incident surface 350, and is offset from the symmetry axis I when the light is emitted from the first sawtooth surface 3521 or the second sawtooth surface 3522. The light emitted by the light source 35 is deflected toward the side of the light source 35 to form an airfoil light distribution curve. Therefore, most of the light emitted by the light source 35 in the Y direction extending perpendicular to the road surface 22 is away from the axis of symmetry I, and the light having a higher light intensity is located outside the glare region, and the light intensity of the light in the glare region is relatively weakened. Direct glare can be avoided by glare from the vehicle or the driver. By adjusting the angle at which the second serration surface 3522 is inclined with respect to the first serration surface 3521, a light distribution curve similar to that of the light source 25 in the first embodiment can be obtained.

FIG. 9 shows a light source of a lamp 21 according to a third embodiment of the present invention. 45, which differs from the first embodiment described above in that the structure of the lens 451 in the light source 45 is different. The lens 451 has a substantially hemispherical contour, and includes a light incident surface 453, a light exit surface 454 opposite to the light incident surface 453, and a curved side surface 455 connecting the light incident surface 453 and the light exit surface 454. The center of the light incident surface 453 is recessed toward the light emitting surface 454 to form a receiving space 456 for receiving the light emitting diode 250. The center of the light exit surface 454 is formed as a funnel-shaped concave surface 458. As shown by the arrow in FIG. 9, the light emitted from the LED 230 is incident on the lens 451 through the light incident surface 453. When the light is emitted from the light exit surface 454, total reflection occurs at the concave surface 458 at the center of the light exit surface 454, and the original is changed. The direction of illumination is emitted through side 455. By adjusting the curvature and area of the concave surface 458, a light distribution curve similar to that of the light source 25 of the first embodiment can be obtained.

FIG. 10 shows a light source 55 of a luminaire 21 according to a fourth embodiment of the present invention, which differs from the first embodiment in that the structure of the mirror 552 in the light source 55 is different. The mirror 552 includes a linear reflecting surface 5521 that faces the light emitting diode 250 for reflecting light.

11 and 12 illustrate a light source of a luminaire 21 according to a fifth embodiment of the present invention. The light source includes a plurality of first light sources 651 and a plurality of second light sources 652. The first light source 651 includes a light emitting diode 250 and a first lens 6510. The first lens 6510 has the same structure as the lens 251 of the light source 25 in the first embodiment. The second light source 652 includes a light emitting diode 250 and a second lens 6521. The second lens 6521 includes a light incident surface 6521 adjacent to the light emitting diode 250, a light emitting surface 6522 opposite to the light incident surface 6521, and a vertical connection between the light incident surface 6521 and the light emitting surface 6522. Straight side wall 6523. The light incident surface 6521 is a moment The second lens 652 has a central axis N that passes through the geometric center of the light incident surface 6520. The light-emitting surface 6522 is a concave curved surface at a predetermined angle with the light-incident surface 6520. The light exiting surface 6522 is recessed toward the light incident surface 6520, and the slope of the light exiting surface 6522 relative to the light incident surface 6520 gradually increases from one side to the other side. In use, the luminaire 21 is mounted such that the side of the light exiting surface 6522 of the second lens 652 with respect to the light incident surface 6520 is placed on the approaching side 265 while the other side is placed on the away side 266. As shown by the arrow in FIG. 12, the light emitted from the LED 230 is incident on the inside of the second lens 652 through the light incident surface 6520, and is further emitted from the light exit surface 6522 of the second lens 652. When the light is emitted from the light exit surface 6522, the light exit surface 6522 is refracted such that the light is deflected toward the traveling away side 266. Therefore, the light intensity at the driving away from side 266 is relatively large, and the light intensity at the approaching side 265 of the driving is relatively weak. By adjusting the curvature of the light emitting surface 6522 of the second lens 652, the light source illuminates the light of the road surface 22 on the road surface. The extended X direction is deflected toward the driving away from side 266 by a predetermined angle. The action of the lens 6210 in the first light source 651 is the same as that of the lens 251 in the light source 25, and as shown by the arrow in FIG. 11, the light emitted by the light-emitting diode 250 is emitted from the first lens 6510, and both are offset from the central axis H. The predetermined range is such that the light having a greater light intensity in the Y direction extending in the vertical road surface 22 is located on both sides of the glare region, and the light intensity of the light in the glare region is relatively weakened, thereby preventing the strong light from being directed toward the vehicle or driving. Direct glare from the staff.

FIG. 13 shows a light source of a luminaire 21 according to a sixth embodiment of the present invention, which differs from the fifth embodiment in that the structure of the lens 7521 in the second light source 752 is different. The lens 7521 includes a rectangular body portion 7520 and an optical portion 7522 formed at the center of the top surface 7523 of the main body portion 7520. The outer surface 7524 of the optical portion 7522 is a spherical surface that is convex away from the main body portion 7520. The thickness of the optical portion 7522 gradually increases from one side of the second light source 752 to the other side, that is, the outer surface of the optical portion 7522. The distance between the 7524 and the top surface 7523 of the body portion 7520 gradually increases from one side to the other. The bottom surface of the main body portion 7520 is recessed in a direction away from the top surface of the side of the optical portion 7522 having a smaller thickness to form a space 7525 for accommodating the LEDs 250. As shown by the arrow in FIG. 13, the light emitting diode 250 has an axis M centered on the position of the light emitting diode 250, and the light emitted from the light emitting diode 250 is incident into the lens 7521. When the light is emitted from the outer surface 7524 of the optical portion 7522, The outer surface 7524 is refracted such that the light is deflected toward the side of the optical portion 7522 having a larger thickness. In use, the side of the optical portion 7522 of the lens 7521 having a larger thickness is placed on the traveling away side 266, and the light emitted through the lens 7521 is deflected toward the traveling away side 266, so that the light intensity at the traveling away side 266 is large. The light intensity on the approaching side 265 is weak. By adjusting the curvature of the outer surface 7524 of the optical portion 7522, the light illuminating the road surface 22 by the light source can be deflected toward the traveling away side 266 in the X direction in which the road surface 22 extends. a predetermined angle.

FIG. 14 shows a light source of a luminaire 21 according to a seventh embodiment of the present invention, which differs from the fifth embodiment in that the structure of the lens 8521 in the second light source 852 is different. The lens 8521 has a plate-like profile, and includes a light-incident surface 8520 and a light-emitting surface 8522 opposite to the light-incident surface 8520. The lens 8521 is located above the light-emitting diode 250, and the light-incident surface 8520 is planar and disposed adjacent to the light-emitting diode 250. The light-emitting surface 8522 is provided with a plurality of zigzag-shaped protrusions 8523. Each protrusion 8523 A vertical surface 8525 and an inclined surface 8524 connecting the vertical surface 8525 are included. Wherein, the vertical faces 8525 are parallel to each other, respectively perpendicular to the light incident surface 8520, and the inclined faces 8524 are obliquely extended and connected to the vertical faces 8525 of the adjacent sides thereof. As shown by the arrow in FIG. 14, the light emitted from the LED 230 is incident on the lens 8521 through the light incident surface 8520, and is refracted when the light is emitted through the vertical surface 8525 or the inclined surface 8522 on the light exit surface 8522, and is directed toward the corresponding protrusion. The side of the vertical face 8525 of the 8523 is partially deflected. In use, the luminaire 21 is mounted such that the vertical face 8525 of the protrusion 8523 in the lens 8521 is placed on the side of the vehicle away from the side 266, and thus the light exiting through the lens 8521 is deflected toward the away side 266. By adjusting the slope of the inclined surface 8524 in the protrusion 8523, the light illuminating the road surface 22 by the light source can be deflected by a predetermined angle toward the traveling away side 266 in the X direction in which the road surface 22 extends.

Finally, the lenses 251, 351, 451 of the light sources 25, 35, 45 in the first, second, and third embodiments can be used to change the light intensity in the light emitted by the light-emitting diode 250, respectively. The range in which the light is concentrated is such that the light emitted by the light-emitting diode 250 is laterally offset to form a light distribution curve of the airfoil. Therefore, the light of the light emitted from the light-emitting surface of the light-emitting device 21 is determined in the Y direction extending perpendicular to the road surface 22 The relative position of the luminaire 21 and the eyes of the driver of the vehicle traveling on the road surface 22 is such that the light having a relatively large light intensity that is laterally offset is located outside the glare region, and the light intensity in the glare region is weakened, thereby avoiding glare. Direct glare is produced by direct illumination of the vehicle or driver. When the luminaire 21 is used as a luminaire in the tunnel 20, a part of the ray in the Y direction extending perpendicular to the road surface 22 is projected on the inner wall surface 23 of the tunnel 20 to be diffusely reflected or diffused and then uniformly It exits to the road surface 22 to further form a uniform light environment. The lenses 6521, 7521, and 8521 of the second light sources 652, 752, and 852 in the fifth, sixth, and seventh embodiments, respectively, can be used to change the outgoing direction of the light emitted by the light-emitting diode 250, thereby allowing the lamp 21 to be illuminated. The light of the road surface 22 is deflected toward the driving away side 266 along the X direction in which the road surface 22 extends. When the driver is traveling on the road surface 22 on the approaching side 265 of the road, the light stimulation of the eyes does not exceed the normal range, and thus is not subject to The effect of direct glare, and when the car is driven from the approaching side 265 toward the driving away from side 266, the driver is facing away from the direction of light illumination, which is also unaffected by direct glare. In a specific implementation, the luminaire 21 may include a combination of other different light sources to achieve the above-mentioned purpose of avoiding direct glare. For example, the luminaire 21 may include the light sources 25, 35, 45 in the first, second, and third embodiments described above. Any combination of the middle light emitting diode 250 and the lenses 251, 351, 451 is used in combination with any of the second light sources 652, 752, 852 in the fifth, sixth, and seventh embodiments to avoid the driver It is affected by direct glare when traveling on the road surface 22.

In summary, the present invention has indeed met the requirements of the invention patent, and has filed a patent application according to law. However, the above description is only a preferred embodiment of the present invention, and it is not possible to limit the scope of the patent application of the present invention. Equivalent modifications or variations made by persons skilled in the art in light of the spirit of the invention are intended to be included within the scope of the following claims.

100, 20‧‧‧ tunnel

101, 21‧‧‧ lamps

102, 22‧‧‧ pavement

104‧‧‧ human eyes

105‧‧‧Vertical

211‧‧‧ axis

221‧‧‧First lane

222‧‧‧second lane

23‧‧‧ inner wall

25, 35, 45, 55‧‧‧ light source

250‧‧‧Lighting diode

251, 351, 451, 7521, 8521 ‧ lens

252, 552‧‧ ‧ mirror

2521, 5521‧‧‧reflecting surface

253‧‧‧ bottom

254‧‧‧ top surface

255‧‧‧ side

256‧‧‧ containment room

257‧‧‧Optical microstructure

2571‧‧‧First bevel

2572‧‧‧second bevel

265‧‧‧ Driving near the side

266‧‧‧ Driving away from the side

350, 453, 6520, 8520‧‧‧ into the glossy surface

352‧‧‧ bumps

3521‧‧‧First serrated surface

3522‧‧‧Second serrated surface

353, 454, 6522, 8522‧‧ ‧ light surface

455‧‧‧ side

456‧‧‧ accommodating space

458‧‧‧ concave

651‧‧‧First light source

6510‧‧‧First lens

652, 752, 852‧‧‧ second light source

6521‧‧‧second lens

6523‧‧‧ side wall

7520‧‧‧ Main body

7522‧‧‧Optical Department

7523‧‧‧ top surface

7524‧‧‧ outer surface

7525‧‧‧ space

8523‧‧‧Protrusion

8524‧‧‧Sloping surface

8525‧‧‧Vertical

Fig. 1 is a schematic view showing the state of use of a conventional luminaire in a tunnel.

2 is a light distribution graph of the lamp of FIG. 1.

FIG. 3 is a schematic diagram showing the principle of glare generated by the lamp shown in FIG. 1. FIG.

4 is a schematic view showing the state of use of the luminaire in the tunnel provided by the first embodiment of the present invention.

FIG. 5 is a schematic structural view of a light source of the luminaire of FIG. 4. FIG.

Figure 6 is a light distribution diagram of the light source of Figure 5 extending in a direction perpendicular to the road surface.

Fig. 7 is a light distribution graph of the light source in Fig. 5 in a direction in which the road surface extends.

FIG. 8 is a schematic structural view of a light source of a luminaire according to a second embodiment of the present invention.

FIG. 9 is a schematic structural view of a light source of a luminaire according to a third embodiment of the present invention.

FIG. 10 is a schematic structural view of a light source of a luminaire according to a fourth embodiment of the present invention.

11 is a schematic structural view of a first light source of a luminaire according to a fifth embodiment of the present invention.

FIG. 12 is a schematic structural view of a second light source of a luminaire according to a fifth embodiment of the present invention.

FIG. 13 is a schematic structural diagram of a second light source of a luminaire according to a sixth embodiment of the present invention.

14 is a schematic structural view of a second light source of a luminaire according to a seventh embodiment of the present invention.

25‧‧‧Light source

250‧‧‧Lighting diode

251‧‧‧ lens

252‧‧‧Mirror

2521‧‧‧reflecting surface

253‧‧‧ bottom

254‧‧‧ top surface

255‧‧‧ side

256‧‧‧ containment room

257‧‧‧Optical microstructure

2571‧‧‧First bevel

2572‧‧‧second bevel

Claims (16)

A road lighting device comprising at least one light source for illuminating a road surface, the at least one light source comprising a light emitting diode and at least one optical component matched with the light emitting diode, the optical component extending perpendicular to the road surface The light emitted by the at least one light source is laterally deflected toward the at least one light source to form a wing-shaped light distribution curve, so that the light having a larger light intensity is respectively located on both outer sides of the glare region and extends parallel to the road surface. The light emitted by the at least one light source is deflected toward the driving away from the side by a predetermined angle, and the light intensity of the light on the axis of the at least one light source extending in a direction perpendicular to the road surface is smaller than the maximum light in the direction One-third of the light intensity, and the light intensity at a 45 to 85 degree angle away from the side of the vehicle in a direction parallel to the road surface is less than one-sixth of the maximum light intensity of the light on the approaching side of the vehicle. The road lighting device of claim 1, wherein the optical component of the at least one light source comprises a lens coupled to the light emitting diode and a mirror on a side of the lens for causing illumination The light emitted by the diode emits the light emitted by the at least one light source to the lateral direction of the at least one light source in a direction perpendicular to the road surface, and the mirror is used to move the light emitted by the light emitting diode away from the driving Side deflection. The road lighting device of claim 2, wherein the lens comprises a bottom surface, a "V" shaped top surface opposite the bottom surface, and a side surface connecting the bottom surface and the top surface, the bottom surface facing the top surface The direction recess forms a receiving chamber for accommodating the light emitting diode, and part of the light emitted by the light emitting diode is emitted to the top surface, and is totally reflected on the top surface, and then is emitted to the side surface and is emitted through the side surface. The road lighting device of claim 3, wherein the side surface is provided with a plurality of protrusions in the axial direction, and each protrusion includes a first slope and a second slope respectively inclined to the axis, the first The bevel intersects the second bevel at an end remote from the axis to form an acute angle. The road lighting device of claim 2, wherein the lens is located above the light emitting diode, and comprises a planar light incident surface and an opposite light emitting surface, wherein the light emitting surface is provided with a plurality of convex surfaces. Each of the protrusions includes a first sawtooth surface perpendicular to the light incident surface and a second sawtooth surface intersecting the first sawtooth surface, the protrusions being symmetrically disposed with respect to the axis, and convex on the same side of the axis The first serrated faces are located on one side away from the axis. The road surface illumination device of claim 2, wherein the lens comprises a light incident surface, a light exit surface opposite to the light incident surface, and a curved side surface connected to the light surface and the light exit surface, the light entering The surface is recessed toward the light-emitting surface to form a receiving space for receiving the light-emitting diode. The center of the light-emitting surface is formed as a funnel-shaped concave surface. A road lighting device according to any one of claims 2-6, wherein the mirror has an arc-shaped or linear reflecting surface facing the light-emitting diode for reflecting light, the mirror The projection on the plane of the light-emitting diode at least partially overlaps the light-emitting diode. The road lighting device of claim 1, wherein the at least one light source comprises at least one first light source and at least one second light source, and the at least one optical component of the first light source comprises a first lens, The first lens is configured to cause a light emitted from the LED to be laterally deflected toward the first light source to form a wing-shaped light distribution curve, and at least one optical component of the second light source includes a second lens. The second lens is configured to deflect the light emitted by the LED from the side away from the vehicle. The road surface illumination device of claim 8, wherein the second lens comprises a planar light-incident surface, an opposite light-emitting surface, and a vertical side surface connected to the light-emitting surface and the light-emitting surface. The surface is a concave curved surface at a predetermined angle with the light incident surface, and the slope of the light emitting surface opposite to the light incident surface is gradually increased from one side of the second light source to the other side. The road illumination device of claim 8, wherein the second lens comprises a rectangular body portion and an optical portion formed on a top surface of the body portion, the outer surface of the optical portion being away from the body portion In the direction of the convex spherical surface, the thickness of the optical portion gradually increases from one side of the second light source to the other side. The road lighting device of claim 10, wherein the bottom portion of the body portion is recessed toward the top surface to form a receiving space for receiving the light emitting diode, wherein the receiving space is close to the optical portion. Set on one side. The road surface illumination device of claim 8, wherein the second lens is located above the light emitting diode, and comprises a planar light incident surface and a light emitting surface opposite to the light incident surface, the light output a plurality of protrusions are disposed on the surface, each protrusion includes a vertical surface perpendicular to the light incident surface and an inclined surface connecting the vertical surfaces, the vertical surfaces are parallel to each other, and the inclined surfaces are respectively connected to the adjacent two Vertical face. The road surface lighting device of claim 12, wherein the first lens comprises a bottom surface, a "V" shaped top surface opposite the bottom surface, and a side surface connecting the bottom surface and the top surface, the center of the bottom surface Forming a receiving chamber for accommodating the light emitting diode in a direction of the top surface, wherein the side surface is provided with a plurality of protrusions in the axial direction, and each of the protrusions includes a first inclined surface and a second inclined surface respectively inclined to the axis, The first slope intersects the second slope at an end remote from the central axis to form an acute angle. The road surface illumination device according to any one of claims 9 to 12, wherein the lens is located above the light emitting diode, and comprises a planar light incident surface and a light exiting the light incident surface. a plurality of protrusions on the light-emitting surface, each protrusion includes a first sawtooth surface perpendicular to the light incident surface and a second sawtooth surface intersecting the first sawtooth surface, the protrusion being opposite to the axis The center is symmetrically disposed, and the convex first serrated faces on the same side of the axis are located on one side away from the axis. The road surface illumination device of any one of claims 9-12, wherein the lens comprises a light incident surface, a light exit surface opposite to the light incident surface, and an arc connected to the light surface and the light exit surface. The central side of the light-incident surface is recessed toward the light-emitting surface to form a receiving space for receiving the light-emitting diode. The center of the light-emitting surface is formed as a funnel-shaped concave surface. The road lighting device according to any one of claims 9 to 12, wherein the light intensity of the light on the axis in the direction perpendicular to the road surface of the at least one light source is smaller than the maximum light in the direction One-third of the light intensity, and the light intensity at a 45 to 85 degree angle away from the side of the vehicle in a direction parallel to the road surface is less than one-sixth of the maximum light intensity of the light on the approaching side of the vehicle.