CN114584719A - LED infrared light supplementing device for vehicle identification in traffic highway section - Google Patents
LED infrared light supplementing device for vehicle identification in traffic highway section Download PDFInfo
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- CN114584719A CN114584719A CN202210217574.9A CN202210217574A CN114584719A CN 114584719 A CN114584719 A CN 114584719A CN 202210217574 A CN202210217574 A CN 202210217574A CN 114584719 A CN114584719 A CN 114584719A
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- 230000001502 supplementing effect Effects 0.000 title description 7
- 239000013589 supplement Substances 0.000 claims abstract description 35
- 230000002457 bidirectional effect Effects 0.000 claims abstract description 33
- 238000009434 installation Methods 0.000 claims abstract description 31
- 230000017525 heat dissipation Effects 0.000 claims description 35
- 230000003287 optical effect Effects 0.000 claims description 11
- 238000012544 monitoring process Methods 0.000 claims description 3
- 239000005341 toughened glass Substances 0.000 claims description 3
- 230000000694 effects Effects 0.000 abstract description 6
- 239000002699 waste material Substances 0.000 abstract description 6
- 238000012423 maintenance Methods 0.000 description 9
- 239000004575 stone Substances 0.000 description 6
- 239000004576 sand Substances 0.000 description 5
- 238000010586 diagram Methods 0.000 description 4
- 238000013459 approach Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000009795 derivation Methods 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000004297 night vision Effects 0.000 description 1
- 238000005496 tempering Methods 0.000 description 1
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N5/00—Details of television systems
- H04N5/30—Transforming light or analogous information into electric information
- H04N5/33—Transforming infrared radiation
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- G—PHYSICS
- G08—SIGNALLING
- G08G—TRAFFIC CONTROL SYSTEMS
- G08G1/00—Traffic control systems for road vehicles
- G08G1/01—Detecting movement of traffic to be counted or controlled
- G08G1/017—Detecting movement of traffic to be counted or controlled identifying vehicles
- G08G1/0175—Detecting movement of traffic to be counted or controlled identifying vehicles by photographing vehicles, e.g. when violating traffic rules
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N23/00—Cameras or camera modules comprising electronic image sensors; Control thereof
- H04N23/60—Control of cameras or camera modules
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N23/00—Cameras or camera modules comprising electronic image sensors; Control thereof
- H04N23/70—Circuitry for compensating brightness variation in the scene
- H04N23/74—Circuitry for compensating brightness variation in the scene by influencing the scene brightness using illuminating means
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Lighting Device Outwards From Vehicle And Optical Signal (AREA)
Abstract
The invention relates to an LED infrared light supplement device for vehicle identification on a traffic highway section, which is arranged on an installation platform in the middle of a bidirectional lane and used for performing infrared light supplement on license plates of vehicles on a shooting section of the bidirectional lane. And when a good light supplement effect is obtained, energy waste and light pollution to passers-by caused by over-range light supplement are avoided. Meanwhile, the infrared supplementary lighting replaces the existing white light supplementary lighting, and the interference to human eyes is avoided.
Description
Technical Field
The invention relates to the technical field of LED infrared lamps, in particular to an LED infrared light supplementing device for vehicle identification in a traffic highway section.
Background
The camera of traffic route is usually worked all weather, wherein, shoots at night and mainly uses infrared camera, and infrared camera is integrated usually has the infrared light filling device of LED, and nevertheless there is the short and short-lived problem of night vision distance in the infrared lamp of LED. Nowadays, also have and install infrared light filling lamp or infrared camera at the scheme on ground, however, the ground dust of traffic route both sides is great, and the little stone that flies is hit when the vehicle high speed passes through can directly destroy infrared light filling lamp more, leads to the maintenance cost higher. Meanwhile, the existing infrared light supplement lamps are fixedly installed on the rack, the shooting conditions of different road sections are different, the installation height of the license plate is higher for the road sections with more trucks, the installation height of the license plate is lower for the road sections with more cars, the fixedly installed infrared light supplement lamps cannot meet the requirements of different road sections, and the movably installed infrared light supplement lamps can enable electrical configuration to be too complex, so that the maintenance and installation cost is increased. Meanwhile, the slope of the shooting road sections of different road sections is different, and infrared light cannot be transmitted in parallel to the shooting road sections, so that the light supplementing effect is poor. Meanwhile, the lane widths of different road sections are different, and the over-range light supplement not only can cause energy waste, but also can cause light pollution to the pedestrians on the roadside.
Therefore, it is necessary to provide an infrared light supplement device capable of effectively hiding the infrared light supplement lamp and adapting to different vehicle types and lane widths on different road sections.
Disclosure of Invention
The invention aims to provide an infrared light supplement device which can effectively hide an infrared light supplement lamp and can adapt to vehicle types and lane widths of different road sections.
According to an aspect of the invention, an LED infrared light supplement device for vehicle identification on a highway section of traffic is provided, which is installed on an installation platform in the middle of a bidirectional lane and is used for performing infrared light supplement on a license plate of a vehicle on a shooting section of the bidirectional lane, and the device comprises: the infrared light source is arranged in the machine body and emits infrared light along the vertical direction, the reflector is arranged in the machine body and changes the optical path of the infrared light, the light guide part is formed in the machine body and allows the infrared light to pass through, the light emitting part is movably arranged on the machine body and is communicated with the light guide part, and the light condensing part is arranged on the light emitting part in a sliding manner along the horizontal direction; the reflecting mirror comprises a first reflecting mirror which reflects infrared light emitted from the infrared light source along the vertical direction to be transmitted in the light guide part along the horizontal direction, a second reflecting mirror which reflects the infrared light emitted from the first reflecting mirror to be transmitted to the light outlet part along the vertical direction, and a third reflecting mirror which reflects the infrared light emitted into the light outlet part to be reflected to the light gathering part along the horizontal direction, wherein the third reflecting mirror is rotatably arranged in the light outlet part; adjusting the installation height of the light-emitting part on the machine body according to the height difference between the installation platform and the horizontal road section of the bidirectional lane, adjusting the distance between the light-collecting part and the third reflector according to the width of the shooting road section, and adjusting the rotating angle of the third reflector according to the gradient of the bidirectional lane, so that the infrared light just irradiates the license plate of the vehicle on the shooting road section along the direction parallel to the shooting road section.
Preferably, the horizontal road section of the bidirectional lane is taken as a reference horizontal plane, the mounting platform is parallel to the horizontal road section, and the height difference of the mounting platform relative to the horizontal road section is H1The height difference of the light-emitting part relative to the mounting platform is the mounting height H of the light-emitting part on the machine body2And satisfies the relation:
20cm≤H1+H2≤80cm。
preferably, the bidirectional lane is composed of a first unidirectional lane and a second unidirectional lane which have the same width and are opposite to each other, and a mounting platform located between the first unidirectional lane and the second unidirectional lane, when the distance between the light-gathering part and the third reflector is adjusted according to the width of the shooting road section, the distance from the light outlet of the light-emitting part to the shooting road section is T, and the width of the bidirectional lane is D1Of said light-emitting partThe included angle between the horizontal direction and the connecting line between the midpoint and the outer intersection point of the shooting road section is W1The infrared light is emitted from the light-gathering part and forms an included angle W with the light outlet2And satisfies the relation:
W2＝W1；
tanW1＝D1/2T。
preferably, the included angle between the shooting road section and the horizontal road section is W3The included angle between the optical path of the infrared light which is emitted out of the machine body through the midpoint of the light-gathering part and the horizontal direction is the corner W of the third reflector4And satisfies the relation:
W3＝W4。
preferably, the light guide portion includes a first light guide portion for allowing the infrared light to propagate in a vertical direction from the infrared light source to the first reflector, a second light guide portion for allowing the infrared light to propagate in a horizontal direction from the first reflector to the second reflector, and a third light guide portion for allowing the infrared light to propagate in a vertical direction from the second reflector to a third reflector in the light emergent portion.
Preferably, the light-gathering part comprises a convex lens, a lens seat for mounting the convex lens, and a sliding part arranged on the lens seat, the light-emitting part comprises a sliding rail, and the sliding part is connected with the sliding rail in a sliding manner; the light emitting part further comprises a first limiting part arranged at one end, close to the third reflector, of the slide rail, a second limiting part arranged at one end, far away from the third reflector, of the slide rail, a light emitting port formed at one end, far away from the third reflector, of the second limiting part, and a rotating mounting seat used for rotatably mounting the third reflector.
More preferably, the body comprises: the first reflection mounting part is arranged at one end, far away from the infrared light source, of the first light guide part along the vertical direction and used for mounting the first reflector; the first reflection installation part is arranged in the second light guide part and is far away from the second reflection installation part along the horizontal direction, the second reflection installation part is used for installing the second reflection mirror, the infrared light source is horizontally arranged, the included angle between the first reflection mirror and the horizontal direction is 45 degrees, and the included angle between the second reflection mirror and the horizontal direction is-45 degrees.
More preferably, the body further comprises: the light-emitting part is detachably mounted on the frame, when the mounting height of the light-emitting part on the machine body is adjusted according to the height difference between the mounting platform and the bidirectional lane, the light-emitting part is firstly dismounted at the corresponding height, then the light-emitting part is dismounted and mounted at the corresponding height on the frame, and finally the dismounted light-emitting part is mounted at the original position of the light-emitting part.
More preferably, the body further comprises:
and the heat dissipation mechanism is arranged at one end of the infrared light source deviating from the reflector.
The end cover is arranged at one end of the first reflection installation part, which is far away from the infrared light source;
the light source accommodating part is detachably arranged on the frame and used for installing the infrared light source;
the heat dissipation accommodating part is detachably arranged on the frame and used for installing the heat dissipation mechanism;
the supporting part is arranged at one end of the heat dissipation accommodating part, which is far away from the infrared light source;
the heat dissipation holes are respectively arranged on the supporting part and the heat dissipation mounting part;
the ground foot part is fixed with the mounting platform and is arranged at one end of the supporting part, which deviates from the infrared light source.
More preferably, the infrared light source includes:
a circuit board;
the infrared LED lamp set is arranged on the circuit board and is electrically connected with the circuit board;
the tempered glass is detachably arranged at one end of the light source accommodating part close to the reflector;
the device further comprises:
the temperature sensor is used for monitoring the working temperature of the infrared light source;
and the control chip is electrically connected with the temperature sensor and the heat dissipation mechanism, and when the working temperature of the infrared light source exceeds a preset value, the control chip starts the heat dissipation mechanism or improves the heat dissipation power of the heat dissipation mechanism.
The invention has the beneficial effects that:
according to the invention, the light-emitting part which is movably arranged on the machine body and is communicated with the light guide part is arranged, so that the installation height of the light-emitting part on the machine body is adjusted according to the height difference between the installation platform and the horizontal road section of the bidirectional lane, the infrared light can irradiate the license plate at the front side at the height close to that of the license plate of a vehicle, and the light supplement effect is improved; the third reflector is rotatably arranged in the light emergent part, and the rotation angle of the third reflector is adjusted to enable the infrared light to be emitted in parallel to the shooting road section; the light-gathering part is slidably arranged on the light-emitting part, and the distance between the light-gathering part and the third reflector is adjusted according to the width of the shooting road section, so that the coverage range of infrared light on the shooting road section is adjusted, the infrared light just covers the shooting road section, and energy waste and light pollution to passersby caused by over-range light supplement are avoided. Meanwhile, the infrared supplementary lighting replaces the existing white light supplementary lighting, and the interference to human eyes is avoided.
The light path is changed through the reflector, so that the infrared light source is hidden in the machine body, the infrared light source is prevented from facing the light outlet, external sunlight, wind, rain, snow, sand and stone and corrosive automobile exhaust are prevented from directly acting on the infrared light source, and the infrared light source is protected better.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
FIG. 1 is a schematic perspective view of the apparatus of the present invention;
FIG. 2 is a front view of the apparatus of the present invention;
FIG. 3 is a side view of the apparatus of the present invention;
FIG. 4 is a schematic cross-sectional view taken along A-A of FIG. 2;
FIG. 5 is a schematic cross-sectional view taken along line B-B of FIG. 2;
FIG. 6 is a schematic diagram of the present invention showing infrared light emitted parallel to a photographed road;
FIG. 7 is a schematic diagram of the present invention showing infrared light just covering the width of a photographed road;
FIG. 8 is a schematic diagram illustrating the change of the optical path of infrared light when the light-condensing portion slides according to the present invention;
FIG. 9 is a schematic view of an infrared light source according to the present invention;
fig. 10 is a connection block diagram of the heat dissipation control of the present invention.
F1, vertical direction; f2, horizontal direction; 100. a device; 200. mounting a platform; 300. a bidirectional lane; 310. a first unidirectional lane; 320. a second unidirectional lane; 330. shooting a road section; 340. a horizontal section; 350. shooting a road section; p, the midpoint of the light emergent portion; 10. a body; 20. an infrared light source; 30. a mirror; 40. a light guide part; 50. a light emitting part; 60. a light-condensing section; 31. a first reflector; 32. a second reflector; 33. a third reflector; 41. a first light guide part; 42. a second light guide part; 43. a third light guide part; 61. a convex lens; 62. a lens base; 63. a slider; 51. a slide rail; 52. a first limiting part; 53. a second limiting part; 54. a light outlet; 11. a first reflective mounting section; 12. a second reflective mounting section; 13. a frame; 14. a visor; 151. a heat dissipation mechanism; 152. an end cap; 153. a light source accommodating section; 154. a heat dissipation housing part; 155. a support portion; 156. heat dissipation holes; 157. a ground foot part; 21. a circuit board; 22. an infrared LED lamp group; 23. tempering the glass; 161. a temperature sensor; 162. a control chip;
Detailed Description
To facilitate an understanding of the invention, the invention will now be described more fully with reference to the accompanying drawings. Preferred embodiments of the present invention are shown in the drawings. This invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete.
It will be understood that when an element is referred to as being "secured to" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "left," "right," and the like as used herein are for illustrative purposes only.
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used in the description of the invention herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.
The invention provides an LED infrared light supplementing device for vehicle identification on a traffic highway section, which is arranged on an installation platform in the middle of a bidirectional lane and is used for performing infrared light supplementing on a license plate of a vehicle on a shooting road section of the bidirectional lane, and comprises: the infrared light source is arranged in the machine body and emits infrared light along the vertical direction, the reflector is arranged in the machine body and changes the optical path of the infrared light, the light guide part is formed in the machine body and is used for the infrared light to pass through, the light emitting part is movably arranged on the machine body and is communicated with the light guide part, and the light condensing part is arranged on the light emitting part in a sliding way along the horizontal direction; the reflecting mirror comprises a first reflecting mirror which reflects infrared light emitted from the infrared light source along the vertical direction to be transmitted in the light guide part along the horizontal direction, a second reflecting mirror which reflects the infrared light emitted from the first reflecting mirror to be transmitted to the light outlet part along the vertical direction, and a third reflecting mirror which reflects the infrared light emitted into the light outlet part to be reflected to the light gathering part along the horizontal direction, wherein the third reflecting mirror is rotatably arranged in the light outlet part; adjusting the installation height of the light-emitting part on the machine body according to the height difference between the installation platform and the horizontal road section of the bidirectional lane, adjusting the distance between the light-collecting part and the third reflector according to the width of the shooting road section, and adjusting the rotating angle of the third reflector according to the gradient of the bidirectional lane, so that the infrared light just irradiates the license plate of the vehicle on the shooting road section along the direction parallel to the shooting road section.
According to the invention, the light-emitting part which is movably arranged on the machine body and is communicated with the light guide part is arranged, so that the installation height of the light-emitting part on the machine body is adjusted according to the height difference between the installation platform and the horizontal section of the bidirectional lane, the infrared light can irradiate the license plate in front at the height close to the license plate of a vehicle, and the light supplementing effect is improved; the third reflector is rotatably arranged in the light emergent part, and the rotation angle of the third reflector is adjusted to enable the infrared light to be emitted in parallel to the shooting road section; the light-gathering part is slidably arranged on the light-emitting part, and the distance between the light-gathering part and the third reflector is adjusted according to the width of the shooting road section, so that the coverage range of infrared light on the shooting road section is adjusted, the infrared light just covers the shooting road section, and energy waste and light pollution to passersby caused by over-range light supplement are avoided. The light path is changed through the reflector, so that the infrared light source is hidden in the machine body, the infrared light source is prevented from facing the light outlet, external sunlight, wind, rain, snow, sand and stone and corrosive automobile exhaust are prevented from directly acting on the infrared light source, and the infrared light source is protected better.
Referring to fig. 1 to 10, the present invention provides an LED infrared light supplement device 100 for vehicle identification on a highway section, wherein the device 100 is installed on an installation platform 200 in the middle of a bidirectional lane 300, and is used for performing infrared light supplement on a license plate of a vehicle on a shooting road section 350 of the bidirectional lane 300, and the infrared light supplement replaces the existing white light supplement, so as to avoid interference to human eyes.
Specifically, the apparatus 100 includes: the infrared light source device comprises a body 10 mounted on the mounting platform 200, an infrared light source 20 mounted in the body 10 and emitting infrared light along a vertical direction F1, a reflector 30 mounted in the body 10 and changing an optical path of the infrared light, a light guide portion 40 formed in the body 10 and allowing the infrared light to pass through, a light emitting portion 50 movably mounted on the body 10 and communicated with the light guide portion 40, and a light condensing portion 60 slidably disposed on the light emitting portion 50 along a horizontal direction F2. By arranging the light-emitting part 50 movably mounted on the machine body 10 and communicated with the light guide part 40, the mounting height of the light-emitting part 50 on the machine body 10 is adjusted according to the height difference between the mounting platform 200 and the horizontal road section 340 of the bidirectional lane 300, so that infrared light can irradiate the license plate at the front side at the height close to that of the vehicle, and the light supplement effect is improved; by rotatably disposing the third reflector 33 in the light emergent portion 50, the rotation angle of the third reflector 33 is adjusted to make the infrared light be emitted in parallel to the photographing section 350; by slidably arranging the light-gathering part 60 on the light-emitting part 50, the distance between the light-gathering part 60 and the third reflector 33 is adjusted according to the width of the shooting road section 350, so that the coverage range of infrared light on the shooting road section 350 is adjusted, the infrared light just covers the shooting road section 350, and energy waste and light pollution to passersby caused by over-range light supplement are avoided.
Specifically, the reflective mirrors 30 include a first reflective mirror 31 that reflects the infrared light emitted from the infrared light source 20 in the vertical direction F1 to propagate in the horizontal direction F2 within the light guide portion 40, a second reflective mirror 32 that reflects the infrared light reflected from the first reflective mirror 31 to propagate in the vertical direction F1 to the light exit portion 50, and a third reflective mirror 33 that reflects the infrared light emitted into the light exit portion 50 to reflect in the horizontal direction F2 to the light collection portion 60, where the third reflective mirror 33 is rotatably disposed within the light exit portion 50. The light path is changed by the first reflector 31 and the second reflector 32, so that the infrared light source 20 is hidden in the body 10, and the infrared light source 20 is prevented from facing the light outlet 54, so that external sunlight, wind, rain, snow, sand and stone and corrosive automobile exhaust are prevented from directly acting on the infrared light source 20, and the infrared light source 20 is protected better. The third reflector 33 is rotatably disposed in the light emitting portion 50, and the rotation angle of the third reflector 33 is adjusted to adapt to the gradient of the shooting road section 350, so that the infrared light is emitted in parallel to the shooting road section 350, and the light supplement effect is improved.
Specifically, the installation height of the light emitting part 50 on the machine body 10 is adjusted according to the height difference between the installation platform 200 and the horizontal section 340 of the bidirectional lane 300, the distance between the light collecting part 60 and the third reflector 33 is adjusted according to the width of the shooting section 350, the rotation angle of the third reflector 33 is adjusted according to the gradient of the bidirectional lane 300, and the infrared light is made to just irradiate the license plate of the vehicle on the shooting section 350 in the direction parallel to the shooting section 350.
Preferably, the horizontal segment 340 of the bidirectional lane 300 is used as a reference horizontal plane, the mounting platform 200 is parallel to the horizontal segment 340, the height difference between the mounting platform 200 and the horizontal segment 340 is H1, the height difference between the light-emitting portion 50 and the mounting platform 200 is the mounting height H2 of the light-emitting portion 50 on the machine body 10, and the following relation is satisfied:
20cm≤H1+H2≤80cm。
the installation height of the light emergent part 50 is limited to be between H1+ H2 and 80cm which are more than or equal to 20cm, so that the infrared light can irradiate the license plate at the front side with the height close to that of the license plate of the vehicle, and the light supplement effect is improved. Meanwhile, since the infrared lamp source is hidden in the body 10 and only contacts with the outside through the light emitting portion 50, only the light emitting portion 50 needs to be maintained during maintenance, thereby reducing the maintenance cost and enabling the maintenance to be more convenient.
Preferably, the bidirectional lane 300 is composed of a first unidirectional lane 310 and a second unidirectional lane 320 which have the same width and are opposite to each other, and a mounting platform 200 located between the first unidirectional lane 310 and the second unidirectional lane 320.
Specifically, when the distance between the light condensing unit 60 and the third reflecting mirror 33 is adjusted according to the width of the image capturing section 350, the distance from the light outlet 54 of the light outlet unit 50 to the image capturing section 350 is T, the width of the bidirectional lane 300 is D1, an included angle between a horizontal direction F2 and a connecting line between a midpoint P of the light outlet unit 50 and an outer intersection of the image capturing section 350 is W1, and an included angle between the infrared light emitted from the light condensing unit 60 and the light outlet 54 is W2, which satisfy the following relation:
W2＝W1；
tanW1＝D1/2T。
referring to fig. 8, the section of fig. 8 is parallel to the photographing section 350. When the light-condensing portion 60 approaches the light-emitting port 54 along the horizontal direction F2, an optical path of the infrared light that is wiped by the center point of the convex lens 61 through the light-emitting port 54 is L2, and when the light-condensing portion 60 is away from the light-emitting port 54 along the horizontal direction F2, an optical path of the infrared light that is wiped by the center point of the convex lens 61 through the light-emitting port 54 is L1, see fig. 7, taking the optical path L2 as an example, an included angle between the optical path L2 and the horizontal direction F2 is W2, a value of W1 is obtained by trigonometric function derivation, and the position of the light-condensing portion 60 on the horizontal direction F2 is adjusted so that W2 is W1, so that the infrared light can be emitted in parallel to the shooting road segment 350.
Preferably, an included angle between the shooting section 350 and the horizontal section 340 is W3, an included angle between a light path of the infrared light emitted out of the body 10 through the middle point of the light-condensing portion 60 and the horizontal direction F2 is a rotation angle W4 of the third reflecting mirror 33, and the relationship:
W3＝W4。
by rotatably disposing the third reflector 33 in the light exit portion 50, the rotation angle of the third reflector 33 is adjusted so that the infrared light can be emitted in parallel to the photographing section 350.
More preferably, the light guide portion 40 includes a first light guide portion 41 for the infrared light to travel along a vertical direction F1 from the infrared light source 20 to the first reflector 31, a second light guide portion 42 for the infrared light to travel along a horizontal direction F2 from the first reflector 31 to the second reflector 32, and a third light guide portion 43 for the infrared light to travel along a vertical direction F1 from the second reflector 32 to the third reflector 33 in the light emergent portion 50.
Preferably, the light condensing portion 60 is slidably disposed on the light emitting portion 50 along a horizontal direction F2, the light condensing portion 60 includes a convex lens 61, a lens holder 62 for mounting the convex lens 61, and a sliding member 63 disposed on the lens holder 62, the light emitting portion 50 includes a sliding rail 51, and the sliding member 63 is slidably connected to the sliding rail 51.
Preferably, the light emitting portion 50 further includes a first limiting portion 52 disposed at one end of the slide rail 51 close to the third reflector 33, a second limiting portion 53 disposed at one end of the slide rail 51 far from the third reflector 33, a light emitting port 54 formed at one end of the second limiting portion 53 far from the third reflector 33, and a rotation mounting seat for rotatably mounting the third reflector 33.
More preferably, the body 10 comprises: a first reflector mounting portion 11 provided at an end of the first light guide portion 41 away from the infrared light source 20 in a vertical direction F1 and configured to mount the first reflector 31; the second reflective installation part 12 is disposed in the second light guide part 42 and far away from the first reflective installation part 11 along the horizontal direction F2 and is used for installing the second reflective mirror 32, the infrared light source 20 is horizontally disposed, an included angle between the first reflective mirror 31 and the horizontal direction F2 is 45 °, and an included angle between the second reflective mirror 32 and the horizontal direction F2 is-45 °.
More preferably, the body 10 further comprises: the light-emitting part 50 is detachably mounted on the frame 13, when the mounting height of the light-emitting part 50 on the machine body 10 is adjusted according to the height difference between the mounting platform 200 and the bidirectional lane 300, the light-emitting part 14 with the corresponding height is firstly dismounted, then the light-emitting part 50 is dismounted and mounted on the frame 13 with the corresponding height, and finally the dismounted light-emitting part 14 is mounted at the original position of the light-emitting part 50.
More preferably, the body 10 further comprises:
and the heat dissipation mechanism 151 is arranged at one end of the infrared light source 20, which is far away from the reflector 30.
An end cap 152 disposed at an end of the first reflective mounting portion 11 away from the infrared light source 20;
a light source accommodating portion 153 detachably provided on the frame 13 for mounting the infrared light source 20;
a heat dissipation accommodating part 154 detachably provided on the frame 13 for mounting the heat dissipation mechanism 151;
a support portion 155 disposed at one end of the heat dissipation accommodating portion 154 away from the infrared light source 20;
a plurality of heat dissipation holes 156, the plurality of heat dissipation holes 156 being disposed on the supporting portion 155 and the heat dissipation mounting portion, respectively;
and a ground foot portion 157 fixed with the mounting platform 200 and arranged at one end of the supporting portion 155 away from the infrared light source 20. The infrared light source 20 is hidden at one end of the light guide part 40 far away from the light emergent part 50, so that external sunlight, wind, rain, snow, sand and stone and corrosive automobile exhaust are prevented from directly acting on the infrared light source 20, and the infrared light source 20 is better protected; the reflector 30 is disposed at one end of the light guide part 40 communicating with the light emergent part 50, so that the infrared light of the infrared light source 20 hidden in the light guide part 40 is reflected to the outside of the machine body 10. Meanwhile, the machine body 10 is mounted on the mounting platform 200, which facilitates the disassembly and maintenance of the device 100; during maintenance, only the reflector needs to be cleaned or replaced, so that the daily maintenance is facilitated, and the maintenance cost is reduced.
More preferably, the infrared light source 20 includes:
a wiring board 21;
the infrared LED lamp group 22 is arranged on the circuit board 21 and is electrically connected with the circuit board 21;
a tempered glass 23 detachably mounted on one end of the light source accommodating part 153 near the reflector 30;
the apparatus 100 further comprises:
a temperature sensor 161 for monitoring the operating temperature of the infrared light source 20;
and a control chip 162 electrically connected to the temperature sensor 161 and the heat dissipation mechanism 151, wherein when the operating temperature of the infrared light source 20 exceeds a preset value, the control chip 162 starts the heat dissipation mechanism 151 or increases the heat dissipation power of the heat dissipation mechanism 151.
By arranging the light-emitting part 50 movably mounted on the machine body 10 and communicated with the light guide part 40, the mounting height of the light-emitting part 50 on the machine body 10 is adjusted according to the height difference between the mounting platform 200 and the horizontal road section 340 of the bidirectional lane 300, so that infrared light can irradiate the license plate at the front side at the height close to that of the vehicle, and the light supplement effect is improved; by rotatably disposing the third reflector 33 in the light emergent portion 50, the rotation angle of the third reflector 33 is adjusted to make the infrared light be emitted in parallel to the photographing section 350; by slidably arranging the light-gathering part 60 on the light-emitting part 50, the distance between the light-gathering part 60 and the third reflector 33 is adjusted according to the width of the shooting road section 350, so that the coverage range of infrared light on the shooting road section 350 is adjusted, the infrared light just covers the shooting road section 350, and energy waste and light pollution to passersby caused by over-range light supplement are avoided. The light path is changed by the reflector 30, so that the infrared light source 20 is hidden in the body 10, and the infrared light source 20 is prevented from facing the light outlet 54, so that external sunlight, wind, rain, snow, sand and stone and corrosive automobile exhaust are prevented from directly acting on the infrared light source 20, and the infrared light source 20 is protected better. Meanwhile, the infrared supplementary lighting replaces the existing white light supplementary lighting, and the interference to human eyes is avoided.
The above-mentioned embodiments only express several embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the claims. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention. Therefore, the protection scope of the present patent shall be subject to the appended claims.
Claims (10)
1. The utility model provides an infrared light filling device of traffic highway section vehicle discernment LED, the device install in the middle of the two-way lane on the mounting platform for carry out infrared light filling to the license plate of vehicle on the shooting highway section in two-way lane, its characterized in that, the device includes: the infrared light source is arranged in the machine body and emits infrared light along the vertical direction, the reflector is arranged in the machine body and changes the optical path of the infrared light, the light guide part is formed in the machine body and is used for the infrared light to pass through, the light emitting part is movably arranged on the machine body and is communicated with the light guide part, and the light condensing part is arranged on the light emitting part in a sliding way along the horizontal direction; the reflecting mirrors comprise a first reflecting mirror which reflects infrared light emitted from the infrared light source along the vertical direction to propagate in the light guide part along the horizontal direction, a second reflecting mirror which reflects the infrared light emitted from the first reflecting mirror to propagate to the light outlet part along the vertical direction, and a third reflecting mirror which reflects the infrared light emitted into the light outlet part to reflect to the light collecting part along the horizontal direction, wherein the third reflecting mirror is rotatably arranged in the light outlet part; adjusting the installation height of the light-emitting part on the machine body according to the height difference between the installation platform and the horizontal road section of the bidirectional lane, adjusting the distance between the light-collecting part and the third reflector according to the width of the shooting road section, and adjusting the rotating angle of the third reflector according to the gradient of the bidirectional lane, so that the infrared light just irradiates the license plate of the vehicle on the shooting road section along the direction parallel to the shooting road section.
2. The LED infrared light supplement device for vehicle identification on the highway section according to claim 1, wherein a horizontal section of the bidirectional lane is taken as a reference horizontal plane, the installation platform is parallel to the horizontal section, and the height difference of the installation platform relative to the horizontal section is H1The height difference of the light-emitting part relative to the mounting platform is the mounting height H of the light-emitting part on the machine body2And satisfies the relation:
20cm≤H1+H2≤80cm。
3. the LED infrared light supplement device for vehicle identification on the highway section according to claim 1, wherein the bidirectional lane comprises a first unidirectional lane and a second unidirectional lane which have the same width and are opposite to each other, and a mounting platform between the first unidirectional lane and the second unidirectional lane, and the light concentration part and the third unidirectional lane are adjusted according to the width of the shooting sectionWhen the distance between the reflectors is long, the distance from the light outlet of the light outlet part to the shooting road section is T, and the width of the bidirectional lane is D1An included angle between a connecting line between the midpoint of the light emergent portion and the outer intersection point of the shooting road section and the horizontal direction is W1The infrared light is emitted from the light-gathering part and forms an included angle W with the light outlet2And satisfies the relation:
W2＝W1；
tanW1＝D1/2T。
4. the LED infrared light supplement device for vehicle identification on the highway section according to claim 1, wherein the included angle between the shooting section and the horizontal section is W3The included angle between the optical path of the infrared light which is emitted out of the machine body through the midpoint of the light-gathering part and the horizontal direction is the corner W of the third reflector4And satisfies the relation:
W3＝W4。
5. the LED infrared supplementary lighting device for vehicle identification on a highway section according to claim 1, wherein the light guide portion comprises a first light guide portion for transmitting the infrared light in a vertical direction from the infrared light source to a first reflector, a second light guide portion for transmitting the infrared light in a horizontal direction from the first reflector to a second reflector, and a third light guide portion for transmitting the infrared light in a vertical direction from the second reflector to a third reflector in the light emergent portion.
6. The LED infrared light supplement device for vehicle identification on the highway section according to claim 5, wherein the light gathering part comprises a convex lens, a mirror base for mounting the convex lens, and a sliding part arranged on the mirror base, the light emergent part comprises a sliding rail, and the sliding part is slidably connected with the sliding rail; the light emitting part further comprises a first limiting part arranged at one end, close to the third reflector, of the slide rail, a second limiting part arranged at one end, far away from the third reflector, of the slide rail, a light emitting port formed at one end, far away from the third reflector, of the second limiting part, and a rotating mounting seat used for rotatably mounting the third reflector.
7. The LED infrared light supplement device for vehicle identification on the highway section according to claim 6, wherein the body comprises: the first reflection mounting part is arranged at one end, far away from the infrared light source, of the first light guide part along the vertical direction and used for mounting the first reflector; the first reflection installation part is arranged in the second light guide part and is far away from the second reflection installation part along the horizontal direction, the second reflection installation part is used for installing the second reflection mirror, the infrared light source is horizontally arranged, the included angle between the first reflection mirror and the horizontal direction is 45 degrees, and the included angle between the second reflection mirror and the horizontal direction is-45 degrees.
8. The LED infrared light supplement device for vehicle identification on the highway section according to claim 7, wherein: the body further includes: the light-emitting part is detachably mounted on the frame, when the mounting height of the light-emitting part on the machine body is adjusted according to the height difference between the mounting platform and the bidirectional lane, the light-emitting part is firstly dismounted at the corresponding height, then the light-emitting part is dismounted and mounted at the corresponding height on the frame, and finally the dismounted light-emitting part is mounted at the original position of the light-emitting part.
9. The LED infrared light supplement device for vehicle identification on the highway section according to claim 8, wherein the body further comprises:
the heat dissipation mechanism is arranged at one end of the infrared light source, which is far away from the reflector;
the end cover is arranged at one end of the first reflection mounting part, which is far away from the infrared light source;
the light source accommodating part is detachably arranged on the frame and used for installing the infrared light source;
the heat dissipation accommodating part is detachably arranged on the frame and used for installing a heat dissipation mechanism;
the supporting part is arranged at one end of the heat dissipation accommodating part, which is far away from the infrared light source;
the heat dissipation holes are respectively arranged on the supporting part and the heat dissipation mounting part;
the ground foot part is fixed with the mounting platform and is arranged at one end of the supporting part, which deviates from the infrared light source.
10. The LED infrared light supplement device for vehicle identification on the highway section according to claim 9, wherein the infrared light source comprises:
a circuit board;
the infrared LED lamp group is arranged on the circuit board and is electrically connected with the circuit board;
the tempered glass is detachably arranged at one end of the light source accommodating part close to the reflector;
the device further comprises:
the temperature sensor is used for monitoring the working temperature of the infrared light source;
and the control chip is electrically connected with the temperature sensor and the heat dissipation mechanism, and when the working temperature of the infrared light source exceeds a preset value, the control chip starts the heat dissipation mechanism or improves the heat dissipation power of the heat dissipation mechanism.
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| CN202210217574.9A CN114584719A (en) | 2022-03-07 | 2022-03-07 | LED infrared light supplementing device for vehicle identification in traffic highway section |
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| CN202210217574.9A CN114584719A (en) | 2022-03-07 | 2022-03-07 | LED infrared light supplementing device for vehicle identification in traffic highway section |
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Cited By (1)
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