A single-light-source steering device for roads and a method for steering a light source

Abstract

The present invention discloses a single-light-source steering device for roads and a light-source steering method, belonging to the technical field of road light-source steering. The device includes: a housing, which is installed at the top of a lamp post through a set of inclination adjustment mechanisms, and has a plurality of light-source emission layers distributed longitudinally inside. A cylindrical mirror arranged longitudinally is provided on the opening side of each light-source emission layer, and a light emitter is installed in the lowermost or uppermost light-source emission layer; the light source emitted by the light emitter forms multiple groups of light beams located in multiple light-source emission layers respectively through a light-source splitting structure provided inside the housing, and each group of light beams forms a fan-shaped light surface and emits out through the cylindrical mirror in the corresponding light-source emission layer; a first distance adjustment component is used to adjust the interval between two adjacent light-source emission layers; a dimming rotation angle mechanism is used to adjust the left and right emission angles of the fan-shaped light surface in the corresponding light-source emission layer; the device forms an optical path adapted to the turning angle in a turning section to help the driver better see or judge the road conditions ahead.

Description

Technical Field

[0001] The present invention relates to the technical field of road light source steering, and particularly to a single light source steering device for roads and a light source steering method. Background Art

[0002] Currently, lighting devices on roads are mainly used to provide a relatively uniform lighting coverage area to ensure the line-of-sight clarity of drivers at night or under low lighting conditions. However, such devices often cannot specifically enhance the lighting for the turning parts of the road, resulting in the obstruction of the driver's line of sight when turning, which may increase the risk of traffic accidents. Similarly, existing laser guiding devices on roads only roughly guide the straight direction of the road and cannot effectively guide or remind drivers of the turning conditions of the road ahead to alert them to potential risks in advance.

[0003] Therefore, existing road lighting devices or laser guiding devices are difficult to flexibly adjust the light distribution or laser guiding according to the specific geometry and turning angles of the road, and thus cannot fully meet the requirements for different lighting effects or laser guiding in complex road environments.

[0004] For this reason, aiming at the deficiencies of the prior art, the present invention proposes a novel single light source steering device for roads, aiming to provide targeted lighting or laser guiding for road turning situations, thereby improving the driver's line of sight and enhancing road safety. Summary of the Invention

[0005] Embodiments of the present invention provide a single light source steering device for roads and a light source steering method to solve the problems in the prior art.

[0006] Embodiments of the present invention adopt the following technical solutions: A single light source steering device for roads includes: a lamp post; a housing installed at the top of the lamp post through a set of inclination adjustment mechanisms, and having a plurality of longitudinally arranged light source emission layers inside, with a cylindrical mirror longitudinally arranged on the opening side of each light source emission layer, and a light emitter installed in the lowermost or uppermost light source emission layer; the light source emitted by the light emitter forms multiple groups of light beams located in multiple light source emission layers respectively through a light source splitting structure provided in the housing, and each group of light beams forms a fan-shaped light surface and emits out through the cylindrical mirror in the corresponding light source emission layer; a first distance adjustment component for adjusting the interval between two adjacent light source emission layers; a dimming and turning angle mechanism, configured with at least two groups and respectively installed in different light source emission layers to adjust the left and right emission angles of the fan-shaped light surface in the corresponding light source emission layer.

[0007] Preferably, the light source splitting structure includes a collimating lens and a plurality of beam splitters, and one beam splitter is correspondingly arranged in each light source emission layer; the collimating lens is fixedly arranged in the light source emission layer where the light emitter is located, and the light source emitted by the light emitter is collimated into a parallel beam by the collimating lens. This parallel beam is split into a transmitted beam and a reflected beam by the beam splitter arranged along the direction of the parallel beam. The transmitted beam forms the fan-shaped light surface after passing through the cylindrical lens in the corresponding light source emission layer, and the reflected beam sequentially passes through the beam splitters and cylindrical lenses in other light source emission layers to form a fan-shaped light surface in each light source emission layer.

[0008] Preferably, the dimming rotation angle mechanism includes: a turntable rotatably connected to the bottom wall of the corresponding light source emission layer; a steering housing fixedly installed on the turntable to rotate with the turntable, and the beam splitter is installed in the steering housing to receive the reflected beam incident from other light source emission layers; the cylindrical lens is installed at the open end of the steering housing; a rotation driving mechanism installed in the light source emission layer to drive the turntable to rotate.

[0009] Preferably, the rotation driving mechanism includes a driving gear, a driven gear, a motor bracket and a rotation driving source; the driven gear is sleeved on the outer edge of the turntable, the rotation driving source is fixed inside the light source emission layer through the motor bracket, and the output shaft of the rotation driving source is coaxially connected to the driving gear to drive the driving gear to rotate, and the driving gear and the driven gear are meshed and connected.

[0010] Preferably, there are three groups of light source emission layers, and the light emitter is located in the lowermost light source emission layer, and there are two groups of dimming rotation angle mechanisms which are respectively located in the upper two light source emission layers.

[0011] Preferably, the distance between each cylindrical lens and its corresponding beam splitter is adjustable.

[0012] Preferably, the cylindrical lens is installed on a group of second distance adjusting components to adjust the distance between it and the corresponding beam splitter through the second distance adjusting components.

[0013] Preferably, the second distance adjusting component at least includes a rectangular frame which has a detachable top plate. Groove positions are provided on the opposite sides of the top plate and the bottom plate of the rectangular frame, and the two end parts of the cylindrical lens are respectively embedded in the groove positions on the top plate and the bottom plate.

[0014] Preferably, the second distance adjustment component further includes: a slide rail installed on the steering housing, and one side of the rectangular frame is slidably connected to the slide rail to move the cylindrical mirror in a direction close to or away from the beam splitter; a sliding plate attached to the outer wall of the steering housing; a locking bolt, the threaded end of which passes through the sliding plate and the guiding groove on the steering housing and is threadedly connected to the threaded hole on the rectangular frame; when the locking bolt is not tightened, the locking bolt is pushed to move along the guiding groove to drive the rectangular frame to move; when the locking bolt is locked on the sliding plate, the rectangular frame can be locked.

[0015] A light source steering method for roads includes the following steps:

[0016] S1: Set multiple layers of longitudinally arranged light source emission ports, and by changing the angles between the multiple layers of light source emission ports and the lamp post, the fan-shaped light source emitted from the light source emission ports is made flush with the road surface inclination or directed towards the road surface;

[0017] S2: By adjusting the longitudinal spacing between different light source emission ports, the fan-shaped light sources emitted from the light source emission ports form an intermittent light path or a full-covered light path on the road surface or in the air;

[0018] S3: By changing the left-right inclination angles of the multiple layers of light source emission ports, and the fan-shaped light source emitted from the lowermost light source emission port is exactly directed towards the current advancing direction of the road, and the upper multiple layers of light source emission ports sequentially increase the angles to emit multiple groups of fan-shaped light sources with different inclination angles, forming a light path adapted to the turning angle of the road ahead.

[0019] The above at least one technical solution adopted in the embodiments of the present invention can achieve the following beneficial effects:

[0020] First, the single light source steering device can achieve different lighting light path distributions and angles through various adjustment means (such as angle adjustment, spacing adjustment, etc.). It can not only provide eye-catching intermittent light paths, but also achieve comprehensive full-covered light paths, and can also adapt to road turning conditions for targeted lighting, meeting the diverse requirements for lighting effects in different road scenarios. In addition, by forming a light path adapted to the turning angle in the turning section, whether it is laser irradiation for prompting or lighting to illuminate the road surface, it can help the driver better see or judge the road conditions ahead, understand the road conditions in advance, and effectively reduce traffic accidents caused by poor visibility at road turns.

[0021] Second, this application uses a single light source combined with beam splitting, adjustment and other structures to achieve multiple groups of light paths with different angles and distributions. Compared with the design of traditional multiple independent light sources, while ensuring the lighting effect, it may save more energy, reduce costs, and is convenient for overall maintenance and management. Description of the Drawings

[0022] The accompanying drawings described herein are used to provide a further understanding of the present invention, and constitute a part of the present invention. The schematic embodiments and descriptions thereof of the present invention are used to explain the present invention, and do not constitute an improper limitation to the present invention. In the drawings:

[0023] Figure 1 is the front view of the present invention;

[0024] Figure 2 is the perspective view of the housing of the present invention and its internal structure;

[0025] Figure 3 is the schematic structural view of several steering shells of the present invention;

[0026] Figure 4 is the plane cross-sectional view of the internal structure of several light source emission layers of the present invention;

[0027] Figure 5 is the schematic view of the internal structure of several light source emission layers of the present invention;

[0028] Figure 6 is the schematic structural view of the light beam direction of the present invention;

[0029] Figure 7 is the schematic view of the internal structure of the steering shell of the present invention;

[0030] Figure 8 is the perspective structural view at one of the steering shells of the present invention;

[0031] Figure 9 is the assembly schematic view of the rectangular frame and the cylindrical mirror of the present invention.

[0032] Reference numerals

[0033] 1 - lamp post; 2 - housing; 3 - inclination adjustment mechanism; 31 - bracket; 32 - electric telescopic rod; 4 - light source emission layer; 41 - cylindrical mirror; 42 - light emitter; 43 - collimating lens; 44 - beam splitter; 5 - first distance adjustment component; 51 - linear drive source; 52 - guide post; 6 - dimming rotation angle mechanism; 61 - turntable; 62 - steering shell; 621 - guiding groove; 63 - driving gear; 64 - driven gear; 65 - motor bracket; 66 - rotation drive source; 7 - second distance adjustment component; 71 - rectangular frame; 711 - top plate; 712 - bottom plate; 713 - slot; 714 - threaded hole; 72 - slide rail; 73 - sliding plate; 74 - locking bolt. Detailed embodiments

[0034] To further elaborate on the technical means and effects adopted by the present invention to achieve the predetermined invention purpose, the following, in combination with the accompanying drawings and preferred embodiments, details the specific embodiments, structures, features and their effects of the present invention as follows.

[0035] The technical solutions provided by the embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

[0036] Refer to Figures 1 to 9 As shown, an embodiment of the present invention provides a single-light-source steering device for roads, which mainly includes a lamp post 1, a housing 2, a first distance adjustment assembly 5, and a light-adjusting corner mechanism 6.

[0037] The housing 2 is installed at the top of the lamp post 1 through a set of inclination adjustment mechanisms 3, and it has a plurality of longitudinally arranged light source emission layers 4 inside. A cylindrical mirror 41 arranged longitudinally is provided on the opening side of each light source emission layer, and a light emitter 42 is installed in the lowermost or uppermost light source emission layer; the light emitted by the light emitter 42 forms multiple groups of light beams located in multiple light source emission layers respectively through a light source splitting structure provided in the housing 2, and each group of light beams forms a fan-shaped light surface through the cylindrical mirror 41 in the corresponding light source emission layer and shoots out;

[0038] Therefore, the housing 2 is installed at the top of the lamp post 1 through a set of inclination adjustment mechanisms 3. This installation method enables the housing 2 to change the angle relative to the lamp post 1, thereby realizing the adjustment of the angle of the internal light source emission layer and meeting different lighting or application requirements.

[0039] In some practical applications, refer to Figure 1 As shown, the inclination adjustment mechanism 3 includes a bracket 31 installed on the lamp post 1. One side of the top end of the bracket 31 is hinged to the housing 2, and an electric telescopic rod 32 is also provided between the bracket 31 and the housing 2. The base part and the telescopic end of the electric telescopic rod 32 are respectively hinged to the bracket 31 and the housing 2. Therefore, by operating the electric telescopic rod 32, the housing 2 can be pushed to move to change its angle, thereby realizing the angle adjustment of the multiple light source emission layers. When the light emitter 42 is a laser light emitter 42, this single-light-source steering device is applied in the field of laser lighting reminder on highways. The fan-shaped light surface emitted by the light source emission layer needs to be flush with the inclination angle of the road surface to form multiple fan-shaped laser surfaces parallel to the road surface in the air to prompt the driver of the road inclination in front of the road; when the light emitter 42 is a lighting light emitter 42, this single-light-source steering device is applied in the field of road lighting or reminder. In this case, the fan-shaped light surface emitted by the light source emission layer points to the road surface in front.

[0040] The first distance adjustment assembly 5 is used to adjust the interval between two adjacent light source emission layers; by changing the longitudinal distance, the distribution of the fan-shaped light surfaces emitted by each light source emission layer on the road surface or in the air can be controlled, realizing different lighting presentation effects such as an intermittent light path or a full-light path. When the light emitter 42 is a lighting light emitter 42, the intermittent light path can improve the eye-catching effect in the lighting field and attract the attention of drivers, etc.; the full-light path can provide a more uniform and comprehensive lighting effect, enhancing visibility and safety.

[0041] There are at least two sets of dimming turning mechanisms 6, which are respectively installed in different light source emitting layers to adjust the left and right emission angles of the fan-shaped light surfaces in the corresponding light source emitting layers, so that the irradiation range and angle of light in the horizontal direction can be flexibly controlled, enabling the lighting or light path to adapt to the actual direction and turning conditions of the road. Specifically, by changing the left and right tilt angles of the multi-layer light source emitting layers, and making the fan-shaped light source emitted from the light source emission port of the lowermost layer directly point to the current advancing direction of the road, the multi-layer light source emission ports above sequentially increase the angle, so that multiple fan-shaped light surfaces with different inclination angles can be emitted, thus forming a light path adapted to the turning angle of the road ahead. When applied in the field of laser irradiation, multiple laser lines with progressive turning can prompt the driver in advance about the turning situation of the road surface ahead and the approximate turning angle; when applied in the field of lighting lamp irradiation, the light source hits the road surface, and the cooperation of multiple light source emitting layers can illuminate the entire road surface at the turning point, ensuring the safety of vehicles driving on the turning section.

[0042] In summary, the single-light-source steering device can achieve different lighting light path distributions and angles through various adjustment means (such as angle adjustment, spacing adjustment, etc.). It can not only provide eye-catching intermittent light paths, but also achieve a comprehensive full-coverage light path, and can also adapt to road turning situations for targeted lighting, meeting the diverse requirements for lighting effects in different road scenarios. In addition, by forming a light path adapted to the turning angle in the turning section, whether it is laser irradiation prompt or lighting to illuminate the road surface, it can help the driver better see or judge the road conditions ahead, understand the road conditions in advance, and effectively reduce traffic accidents caused by poor visibility at road turns.

[0043] Moreover, this application uses a single light source combined with beam splitting, adjustment and other structures to achieve multiple sets of light paths with different angles and distributions. Compared with the design of traditional multiple independent light sources, while ensuring the lighting effect, it may be more energy-saving, cost-reducing, and convenient for overall maintenance and management.

[0044] In some practical applications, referring to Figure 4 and Figure 6As shown, the light source splitting structure includes a collimating lens 43 and a plurality of beam splitters 44, and one beam splitter 44 is correspondingly arranged in each light source emitting layer; the collimating lens 43 is fixedly arranged in the light source emitting layer where the light emitter 42 is located. The light emitted by the light emitter 42 is collimated into a parallel beam by the collimating lens 43, and this parallel beam is split into a transmitted beam and a reflected beam by the beam splitter 44 arranged along the direction of this parallel beam. The transmitted beam forms the fan-shaped light surface after passing through the cylindrical lens 41 in the corresponding light source emitting layer, and the reflected beam sequentially passes through the beam splitters 44 and cylindrical lenses 41 in other light source emitting layers to form a fan-shaped light surface in each light source emitting layer. As shown in the figure, the beam splitter 44 is configured to be inclined 45° to the right, so that the transmitted beam can continue to shoot forward in its original direction, while the reflected beam is refracted by the beam splitter 44 and shoots vertically upward to enter the beam splitter 44 in the upper light source emitting layer. Through the sequential light transmission and refraction of multiple beam splitters 44, a fan-shaped light surface can be formed at the open end of each light source emitting layer.

[0045] In some practical applications, referring to Figure 4 、 Figure 5 and Figure 7 as shown, the dimming rotation angle mechanism 6 includes a turntable 61, a steering housing 62 and a rotation driving mechanism.

[0046] The turntable 61 is rotatably connected to the bottom wall of the corresponding light source emitting layer; the steering housing 62 is fixedly installed on the turntable 61 to rotate with the turntable 61. The beam splitter 44 is installed in the steering housing 62 to receive the reflected beam incident from other light source emitting layers; the cylindrical lens 41 is installed at the open end of the steering housing 62. The rotation driving mechanism is installed in this light source emitting layer to drive the turntable 61 to rotate. Specifically, the rotation driving mechanism includes a driving gear 63, a driven gear 64, a motor bracket 65 and a rotation driving source 66; the driven gear 64 is sleeved on the outer edge of the turntable 61, the rotation driving source 66 is fixed inside this light source emitting layer through the motor bracket 65, and the output shaft of the rotation driving source 66 is coaxially connected to the driving gear 63 to drive the driving gear 63 to rotate, and the driving gear 63 and the driven gear 64 are meshed. It should be noted that there is a channel for the reflected beam in the lower layer to pass through between two adjacent light source emitting layers, as can be seen from the figure.

[0047] When it is necessary to adjust the left - and - right emission angles of the fan - shaped light surface in the corresponding light source emission layer, start the rotation drive source 66 (usually a motor). The output shaft of the rotation drive source 66 starts to rotate, driving the driving gear 63 connected coaxially therewith to rotate. Since the driving gear 63 and the driven gear 64 are meshed and connected, according to the gear transmission principle, the rotation of the driving gear 63 will drive the driven gear 64 to rotate accordingly. And the driven gear 64 is sleeved on the outer edge of the turntable 61, so the rotation of the driven gear 64 will drive the turntable 61 to rotate around its connection axis with the bottom wall of the light source emission layer (this connection axis should be coaxial with the center connection line of two adjacent beam splitters 44 to ensure that the reflected light beam emitted by the beam splitter 44 in the next layer can still directly hit the center of the rotated beam splitter 44). The rotation of the turntable 61 will cause the steering housing 62 fixedly installed thereon to rotate synchronously, and the angle of the beam splitter 44 in the steering housing 62 will change accordingly. This changes the processing direction of the light beam after the beam splitter 44 receives the reflected light beam in other light source emission layers, realizing the function of flexibly changing the irradiation angle of the fan - shaped light surface in the horizontal direction according to actual needs, so as to better adapt to different road directions, turning situations and other scenarios, and provide accurate optical path adjustment for applications such as lighting or laser irradiation.

[0048] In some practical cases, such as Figure 4 and Figure 5 shown, the light source emission layer is configured with three groups, and the light emitter 42 is located in the light source emission layer of the bottommost layer. The dimming rotation angle mechanism 6 is configured with two groups and is respectively located in the upper two light source emission layers.

[0049] In some practical applications, based on any of the above - mentioned embodiments, the distance between each cylindrical lens 41 and the corresponding beam splitter 44 can be adjusted. Specifically, the cylindrical lens 41 is installed on a set of second distance - adjusting components 7 to adjust the distance between it and the corresponding beam splitter 44 through the second distance - adjusting components 7.

[0050] Referring to Figure 2 and Figure 8As shown, the second distance adjustment component 7 includes at least a rectangular frame 71, which has a detachable top plate 711, and grooves 713 are provided on the opposite sides of the top plate 711 and the bottom plate 712 of the rectangular frame 71, and the two ends of the cylindrical mirror 41 are respectively embedded in the grooves 713 on the top plate 711 and the bottom plate 712. The slide rail 72 is installed on the steering housing 62, and one side of the rectangular frame 71 is slidably connected to the slide rail 72 to enable the cylindrical mirror 41 to move toward or away from the spectrometer 44; the sliding plate 73 is attached to the outer wall of the steering housing 62; the threaded end of the locking bolt 74 passes through the sliding plate 73 and the guide groove 621 on the steering housing 62 and is threadedly connected to the threaded hole 714 on the rectangular frame 71; when the locking bolt 74 is not locked, the locking bolt 74 is pushed to move along the guide groove 621 to drive the rectangular frame 71 to move; when the locking bolt 74 is locked on the sliding plate 73, the rectangular frame 71 is locked.

[0051] When the distance between the cylindrical mirror 41 and the beam splitter 44 needs to be adjusted, the locking bolt 74 is first loosened to be in an unlocked state. At this time, the operator can push the locking bolt 74 along the guide groove 621 on the steering housing 62. Since the locking bolt 74 is connected to the rectangular frame 71 through a thread, the locking bolt 74 will drive the rectangular frame 71 to slide along the slide rail 72 during the pushing process. The movement of the rectangular frame 71 will drive the cylindrical mirror 41 installed on the internal slot 713 thereof to move synchronously, so that the cylindrical mirror 41 changes its position in the direction of approaching or moving away from the beam splitter 44, and the distance between the two is adjusted to meet different light path adjustment requirements, such as adjusting the distance according to the actual lighting scene's requirements for the focusing, divergence and other effects of the light beam (when lighting, the light beam needs to diverge, while when laser prompting, the laser beam has a slight relative focus, and the angle of the fan beam formed should be smaller to improve the conspicuousness). After adjusting the cylindrical mirror 41 to a suitable distance, in order to ensure that its position is fixed and to avoid position changes caused by external factors (such as vibration, slight shaking during equipment operation, etc.) that affect the stability of the optical path, it is necessary to tighten the locking bolt 74 so that it is locked on the sliding plate 73. Through the threaded fastening effect between the locking bolt 74 and the rectangular frame 71 and the close fit with the sliding plate 73, the movement of the rectangular frame 71 can be limited, so that the cylindrical mirror 41 is stably locked in the current position, ensuring that the entire optical path system can operate stably according to the adjusted state and maintain the corresponding lighting or optical path effect.

[0052] Therefore, in this embodiment, through this structural design, the distance between the cylindrical lens 41 and the beam splitter 44 can be conveniently and flexibly adjusted to adapt to a variety of different actual application scenarios and optical path requirements. Whether it is necessary to enhance the convergence effect of the light beam, expand the scattering range of the light beam, or make fine optical path adjustments according to different road conditions, lighting area characteristics, etc., it can be achieved by adjusting the distance, greatly improving the adaptability of the device to different situations.

[0053] A method for steering a light source for a road can be implemented by using the above single light source steering device, and specifically includes the following steps:

[0054] S1: Set multiple layers of longitudinally arranged light source emission ports (i.e., equivalent to the above light source emission layer), and by changing the angle between the multiple layers of light source emission ports and the lamp post 1, so that the fan-shaped light source emitted from the light source emission ports is flush with the road surface inclination or points to the road surface;

[0055] S2: By adjusting the longitudinal spacing between different light source emission ports, so that the fan-shaped light sources emitted from the light source emission ports form an intermittent optical path or a full-covered optical path on the road surface or in the air;

[0056] S3: By changing the left-right inclination angles of the multiple layers of light source emission ports, and the fan-shaped light source emitted from the lowermost light source emission port points directly to the current forward direction of the road, and the multiple layers of light source emission ports above sequentially increase the angle to emit multiple groups of fan-shaped light sources with different inclination angles, forming an optical path adapted to the turning angle of the road ahead.

[0057] The above is only a preferred embodiment of the present invention, and does not impose any form of limitation on the present invention. Although the present invention has been disclosed above with a preferred embodiment, it is not intended to limit the present invention. Any person skilled in the art can make some changes or modifications to the above-disclosed technical content to form an equivalent embodiment with equivalent changes, but as long as the technical content of the present invention is not departed from, any brief modifications, equivalent changes and modifications made to the above embodiments based on the technical essence of the present invention still fall within the scope of the technical solution of the present invention.

Claims

1. A single-light source steering device for roads, characterized in that Comprising: A lamp post (1); a housing (2) installed at the top of the lamp post (1) through a set of inclination adjustment mechanisms (3), and having multiple longitudinally arranged light source emission layers inside. A cylindrical mirror (41) arranged longitudinally is provided on the opening side of each light source emission layer, and a light emitter (42) is installed in the lowermost or uppermost light source emission layer; the light source emitted by the light emitter (42) forms multiple groups of light beams located in the multiple light source emission layers respectively through a light source splitting structure provided in the housing (2), and each group of light beams forms a fan-shaped light surface and emits out through the cylindrical mirror (41) in the corresponding light source emission layer; a first distance adjustment component (5) for adjusting the interval between two adjacent light source emission layers; a dimming rotation angle mechanism (6), at least two groups are configured and are respectively installed in different light source emission layers to adjust the left and right emission angles of the fan-shaped light surface in the corresponding light source emission layer; the light source splitting structure includes a collimating lens (43) and several beam splitters (44), and one beam splitter (44) is correspondingly configured in each light source emission layer; the collimating lens (43) is fixedly arranged in the light source emission layer where the light emitter (42) is located, the light source emitted by the light emitter (42) is collimated into a parallel light beam through the collimating lens (43), and this parallel light beam is split into a transmitted light beam and a reflected light beam through the beam splitter (44) arranged along the direction of this parallel light beam. The transmitted light beam forms the fan-shaped light surface after passing through the cylindrical mirror (41) in the corresponding light source emission layer, and the reflected light beam sequentially passes through the beam splitters (44) and cylindrical mirrors (41) in other light source emission layers to form a fan-shaped light surface in each light source emission layer; the dimming rotation angle mechanism (6) includes: a turntable (61) rotatably connected to the bottom wall of the corresponding light source emission layer; a steering housing (62) fixedly installed on the turntable (61) to rotate with the turntable (61), and the beam splitter (44) is installed in this steering housing (62) to receive the reflected light beam incident from other light source emission layers; the cylindrical mirror (41) is installed at the open end of this steering housing (62); A rotation driving mechanism installed in this light source emission layer for driving the turntable (61) to rotate.

2. The single-light source steering device for roads according to claim 1, characterized in that, The rotation driving mechanism includes a driving gear (63), a driven gear (64), a motor bracket (65) and a rotation driving source (66); the driven gear (64) is sleeved on the outer edge of the turntable (61), the rotation driving source (66) is fixed inside this light source emission layer through the motor bracket (65), and the output shaft of the rotation driving source (66) is coaxially connected to the driving gear (63) to drive the driving gear (63) to rotate, and the driving gear (63) and the driven gear (64) are meshed and connected.

3. The single-light source steering device for roads according to claim 1, characterized in that, There are three groups of the light source emission layers, and the light emitter (42) is located in the lowermost light source emission layer, and there are two groups of the dimming rotation angle mechanisms (6) and are respectively located in the upper two light source emission layers.

4. The single-light source steering device for roads according to claim 1, characterized in that The distance between each cylindrical mirror (41) and the corresponding beam splitter (44) is adjustable.

5. The single-light source steering device for roads according to claim 1, characterized in that, The cylindrical lens (41) is mounted on a set of second distance adjustment components (7) to adjust the distance between it and the corresponding beam splitter (44) through the second distance adjustment components (7).

6. The single light source steering device for roads according to claim 5, characterized in that, The second distance adjustment components (7) at least include a rectangular frame (71). The rectangular frame (71) has a detachable top plate (711). Slots (713) are provided on opposite sides of the top plate (711) and the bottom plate (712) of the rectangular frame (71). Both end portions of the cylindrical lens (41) are respectively embedded in the slots (713) on the top plate (711) and the bottom plate (712).

7. The single-light source steering device for roads according to claim 6, wherein, The second distance adjustment components (7) further include: a slide rail (72), which is mounted on the steering housing (62), and one side of the rectangular frame (71) is slidably connected to the slide rail (72) to move the cylindrical lens (41) in a direction closer to or farther from the beam splitter (44); a sliding plate (73), which is attached to the outer wall of the steering housing (62); a locking bolt (74), the threaded end of which passes through the sliding plate (73) and the guiding slot (621) on the steering housing (62) and is threadedly connected to the threaded hole (714) on the rectangular frame (71). When the locking bolt (74) is not tightened, the locking bolt (74) is pushed to move along the guiding slot (621) to drive the rectangular frame (71) to move. When the locking bolt (74) is tightened on the sliding plate (73), the locking of the rectangular frame (71) is achieved.

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