Lane indicator with laser display projection

Abstract

The utility model discloses a lane indicator with laser display projection, which comprises a shell, a front traffic signal lamp panel and a rear traffic signal lamp panel, the front traffic signal lamp panel and the rear traffic signal lamp panel are respectively arranged on two sides of the shell, and the shell is provided with a power supply, a control card, a red laser projection lamp and a green laser projection lamp. The power supply, the front traffic signal lamp panel, the rear traffic signal lamp panel, the red laser projection lamp and the green laser projection lamp are all electrically connected with the control card; the projection end of the red laser projection lamp and the projection end of the green laser projection lamp are arranged downwards so that projection can be projected to a lane below the shell. The light source of the red laser projection lamp is a red laser diode, and the light source of the green laser projection lamp is a green laser diode. The monochromatic laser diode is used as a light source of the projection lamp, the light source utilization rate is improved, the size of a heat dissipation structure of the laser projection lamp is reduced, the projection lamp can be integrated in the lane indicator, the size of the indicator is reduced, and power consumption is reduced.

Description

Technical Field

[0001] This application relates to the technical field of lane indicators, and in particular, to a lane indicator with a laser display projection. Background Art

[0002] A lane indicator is a traffic signal indicator installed above the center of each lane, with double-sided display, informing passing vehicles whether the lane is allowed to pass. Usually, a "red cross" indicates that the lane is not allowed to pass, and a "green arrow" indicates that the lane can pass. When a "green arrow" is displayed on the front, a "red cross" is generally displayed on the back to warn against oncoming vehicles. It is usually installed at highway toll stations, main lines, tunnels, and tidal lanes of municipal roads. Among them, for the lane indicator in the tunnel, in order to more prominently and effectively remind the driver whether the lane is allowed to pass, in addition to displaying the indication signal on the front and back of the lane indicator, there is also a projection lamp that can project a traffic signal image onto the road surface of the lane. However, the lane indicators in related technologies have the technical problem of high power consumption. Utility Model Content

[0003] In order to overcome the deficiency of the large power consumption of the lane indicators in the existing technology, this application provides a lane indicator with a laser display projection.

[0004] The technical solution of this application is described as follows:

[0005] A lane indicator with a laser display projection, characterized in that it includes a housing, a front traffic signal lamp board, and a rear traffic signal lamp board. The front traffic signal lamp board and the rear traffic signal lamp board are respectively arranged on two sides of the housing. The housing is provided with a power supply, a control card, a red laser projection lamp, and a green laser projection lamp. The power supply, the front traffic signal lamp board, the rear traffic signal lamp board, the red laser projection lamp, and the green laser projection lamp are all electrically connected to the control card;

[0006] The projection ends of the red laser projection lamp and the green laser projection lamp are both arranged downward to project the projection onto the lane below the housing;

[0007] The light source of the red laser projection lamp is a red laser diode, and the light source of the green laser projection lamp is a green laser diode.

[0008] Further, in one embodiment, constant current driving components are respectively connected between the red laser projection lamp and the green laser projection lamp and the control card.

[0009] Further, in one embodiment, the housing is provided with an adjusting fixing plate. The upper ends of the red laser projection lamp and the green laser projection lamp are both fixed to the adjusting fixing plate. The adjusting fixing plate is inclined so that the projection light paths of the red laser projection lamp and the green laser projection lamp are inclined and projected onto the lane.

[0010] Further, in one embodiment, the red laser projection lamp includes a lamp body. One end of the lamp body is provided with a laser diode heat sink, and the other end is provided with a convex lens. The red laser diode is disposed inside the lamp body. A no-entry sign film is provided between the convex lens and the red laser diode. When the red laser diode is lit, the convex lens projects the image on the no-entry sign film onto the road surface of the lane.

[0011] Further, in one embodiment, the green laser projection lamp includes a lamp body. One end of the lamp body is provided with a laser diode heat sink, and the other end is provided with a convex lens. The green laser diode is disposed inside the lamp body. A go-ahead sign film is provided between the convex lens and the green laser diode. When the green laser diode is lit, the convex lens projects the image on the go-ahead sign film onto the road surface of the lane.

[0012] Further, in one embodiment, the adjusting fixing plate is rotatably connected to the housing through a damping moving shaft, and the damping moving shaft is parallel to the horizontal direction.

[0013] Further, in one embodiment, an inclined angle is formed between the projection light path of the red laser projection lamp or the green laser projection lamp and the surface of the projected lane, and the opening of the inclined angle faces the advancing direction of the traffic flow corresponding to the lane.

[0014] Further, in one embodiment, the emission range of the red laser diode is 650±10 nm, and the emission range of the green laser diode is 532±10 nm.

[0015] Further, in one embodiment, the power of the red laser diode is 5 W, and the power of the green laser diode is 5 W.

[0016] Further, in one embodiment, the control card includes an Ethernet connection port, an RS485 connection port or a digital input / output connection port.

[0017] According to the present application of the above solution, its beneficial effects are as follows: By using a red laser diode and a green laser diode as the light sources of two laser projection lamps respectively, when the monochromatic light source projects a single red or single green traffic signal image, it has a very high light source utilization rate. When the projected traffic signal images reach the same brightness and visual effects, the power consumption and heat generation of the laser projection lamps are smaller, and the space volume required for the heat dissipation structure of the laser projection lamps is smaller, enabling the projection lamps to be integrated inside the lane indicator, reducing the volume of the indicator and lowering the power consumption of the indicator. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following will briefly introduce the drawings required for use in the embodiments or the description of the prior art. Obviously, the following drawings are only some embodiments of the present application. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0019] Figure 1 Structural schematic diagram of the present application;

[0020] Figure 2 Connection relationship diagram of the present application;

[0021] Figure 3 Structural schematic diagram of the red laser projection lamp and the green laser projection lamp of the present application;

[0022] Figure 4 Cross-sectional structural schematic diagram of the present application;

[0023] Figure 5 Schematic diagram of the relationship between the projection tilt direction and the traffic flow direction when the present application is in use.

[0024] In the figure, 1, lamp body; 2, laser diode heat sink; 3, convex lens; 4, red laser diode; 5, no-entry sign film; 6, green laser diode; 7, go-ahead sign film;

[0025] 100, housing; 110, adjustment fixing plate; 120, damping moving shaft; 130, rotating shaft; 140, tower buckle; 200, power supply; 300, control card; 400, front traffic signal board; 500, constant current driver; 610, red laser projection lamp; 620, green laser projection lamp; 700, rear traffic signal board; A: Axis line of rotation of the damping moving shaft. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0026] The present application will be further described below in conjunction with the accompanying drawings and embodiments. All technical and scientific terms used in this specification have the same meaning as commonly understood by those skilled in the technical field to which the present application belongs. The terms used in the specification of the present application are only for the purpose of describing specific embodiments and are not intended to limit the present application. The term "and / or" used in this specification includes any and all combinations of one or more of the related listed items.

[0027] In addition, the technical features involved in different embodiments of the present application described below can be combined with each other as long as they do not conflict with each other.

[0028] In the related art, the function of projecting traffic signal images of the lane indicator is realized by an LED projection lamp. This LED projection lamp uses a white LED light source, and its spectrum is a continuous spectrum, including three color light components of red, blue, and green in visible light.

[0029] However, in actual use, the lane indicator usually only needs to project a single red or single green traffic signal image, which causes waste of light. Therefore, the light efficiency of the lane indicator using the LED projection lamp is low. To make the projected traffic signal image reach the designed brightness and visual effect, it is often necessary to use a high-power LED projection lamp, resulting in a large volume, large power consumption, and large heat generation of the LED projection lamp, making it difficult to integrate inside the lane indicator.

[0030] For this reason, the present application provides a lane indicator with laser display projection, which has the technical effects of smaller volume, smaller power consumption, and smaller heat generation.

[0031] As Figures 1 - 4 shown, the lane indicator with laser display projection includes a housing 100, and a front traffic signal board 400 and a rear traffic signal board 700 arranged on the housing 100. The front traffic signal board 400 and the rear traffic signal board 700 are respectively arranged on two sides of the housing 100. Taking the side facing the traffic flow direction as the front side, that is, the reverse traffic flow direction is the front side of the housing 100, and the forward traffic flow direction is the rear side of the housing 100. The front traffic signal board 400 is arranged on the front side of the housing 100, and the rear traffic signal board 700 is arranged on the rear side of the housing 100. A power supply 200, a control card 300, a red laser projection lamp 610, and a green laser projection lamp 620 are arranged inside the housing 100. Among them, the power supply 200, the front traffic signal board 400, the rear traffic signal board 700, the red laser projection lamp 610, and the green laser projection lamp 620 are all electrically connected to the control card 300.

[0032] The projection ends of the red laser projection lamp 610 and the green laser projection lamp 620 are both arranged downward, so as to project the projections of the red laser projection lamp 610 or the green laser projection lamp 620 onto the lane below the housing 100. The control card 300 is used for the selection of traffic signs on the front traffic signal board 400 and the rear traffic signal board 700. At the same time, the control card 300 controls the red laser projection lamp 610 to turn on or off, or the green laser projection lamp 620 to turn on or off according to the traffic signs on the front traffic signal board. When the current traffic signal board 400 displays a passable sign, the corresponding green laser projection lamp 620 lights up to project an image allowing passage; when the current traffic signal board 400 displays a no-pass sign, the corresponding red laser projection lamp 610 lights up to project an image prohibiting passage.

[0033] The light source of the red laser projection lamp 610 is a red laser diode 4, and the light source of the green laser projection lamp 620 is a green laser diode 6. Using the red laser diode 4 and the green laser diode 6 as the light sources of the two laser projection lamps respectively, when the monochromatic light source projects a single red or single green traffic signal image, it has a very high light source utilization rate. When the projected traffic signal images reach the same brightness and visual effect, the laser projection lamp of the present application has less power consumption and heat generation, and the space volume required for the heat dissipation structure is smaller, enabling the projection lamp to be integrated inside the lane indicator, reducing the volume of the indicator.

[0034] It should be noted that in the direction description of the specification of the present application, for the lane indicator with laser display projection, the side facing the vehicle flow direction is the front side, that is, the reverse vehicle flow direction is the front side of the housing 100, and the forward vehicle flow direction is the rear side of the housing 100. The lane indicator with laser display projection for each lane is suspended above the lane and is generally fixed on the tunnel wall, elevated structure or lamp post. The front traffic signal board 400 is rotatably connected to a side rotating shaft 130 of the housing 100, and the front traffic signal board 400 and the housing 100 can be rotated and opened and closed. When the front traffic signal board 400 and the housing 100 are closed, the tower buckle 140 is buckled to prevent the front traffic signal board 400 from being opened by external force, which is convenient for maintenance and can also protect the safety of the internal components of the housing 100.

[0035] In the lane indicator with laser display projection in this embodiment, both the front traffic signal board 400 and the rear traffic signal board 700 can display a red cross, a green arrow, and a left-turn green arrow. When the front traffic signal board 400 displays a red cross, it means that this lane is closed, and the corresponding red laser projection lamp 610 should project a red no-entry traffic signal image. When the front traffic signal board 400 displays a green arrow, it means that this lane is passable, and the corresponding green laser projection lamp 620 should project a green go-ahead traffic signal image. The control card 300 can support the control mode of a conventional lane indicator and can control the display of traffic signal signs on the front traffic signal board 400 and the rear traffic signal board 700 of the lane indicator, as well as the on / off of the red laser projection lamp 610 and the green laser projection lamp 620 according to an external control signal.

[0036] In one embodiment, constant current driving components 500 are respectively connected between the red laser projection lamp 610 and the green laser projection lamp 620 and the control card 300. When the red laser projection lamp 610 and the green laser projection lamp 620 are lit under the constant current driving control mode, the light brightness is stable and not affected by factors such as voltage fluctuations, improving the reliability and stability of the entire electronic system. At the same time, constant current driving can reduce damage caused by excessive or too small current, thereby extending the service life of the red laser diode 4 and the green laser diode 6, that is, helping to extend the service time of the indicator.

[0037] As Figure 1 shown, in one embodiment, an adjusting fixing plate 110 is further provided below the interior of the housing 100. The upper ends of the red laser projection lamp 610 and the green laser projection lamp 620 are both fixed to the adjusting fixing plate 110. The adjusting fixing plate 110 is inclined, and the projection images of the red laser projection lamp 610 or the green laser projection lamp 620 are projected onto the road surface of the lane at a certain inclination angle.

[0038] As Figure 1 and Figure 5 shown, in this embodiment, the adjusting fixing plate 110 is rotationally connected to the housing 100 through a damping moving shaft 120. The damping moving shaft 120 is parallel to the horizontal direction, and its rotation axis line is the dotted line A shown in the figure. The adjusting fixing plate 110 can rotate around the damping moving shaft 120. By changing the inclination angle of the adjusting fixing plate 110, the projection angles of the red laser projection lamp 610 and the green laser projection lamp 620 fixed to the adjusting fixing plate 110 can be changed. In Figure 5Among them, an inclined included angle is formed between the projection optical path of the red laser projection lamp 610 or the green laser projection lamp 620 and the surface of the projected lane. The opening of the inclined included angle faces the advancing direction of the traffic flow corresponding to the lane, that is, the projection images of the red laser projection lamp 610 and the green laser projection lamp 620 will be inclined and projected onto the lane behind the lower part of the housing 100. The adjustable projection angle of the projections of the red laser projection lamp 610 and the green laser projection lamp 620 is less than 45 degrees. That is, the projection images of the red laser projection lamp 610 and the green laser projection lamp 620 can be adjusted and projected onto the road behind the housing 100 along the direction of the traffic flow, so that the projection light is inclined from the roof of the moving vehicle towards the head of the vehicle, so that the laser cannot directly shine into the eyes of the vehicle driver, thereby preventing the problem of glare of the vehicle driver caused by the projection light. The projection angle should be less than 45 degrees to prevent the position of the projected traffic signal image from being too far away from the fixed point position of the lane indicator, and to ensure the normal operation of the traffic information prompt function of the traffic signal image.

[0039] As Figure 1 and Figure 3 shown, in one embodiment, the red laser projection lamp 610 includes a lamp body 1. One end of the lamp body 1 is provided with a laser diode heat sink 2, and the other end is provided with a convex lens 3. The red laser diode 4 is arranged inside the lamp body 1. A no-entry sign film 5 is arranged between the convex lens 3 and the red laser diode 4. When the red laser diode 4 is lit, the convex lens 3 projects the image on the no-entry sign film 5 onto the road surface of the lane.

[0040] The green laser projection lamp 620 has a similar structure to the red laser projection lamp 610. The green laser projection lamp 620 also includes a lamp body 1. One end of the lamp body 1 is provided with a laser diode heat sink 2, and the other end is provided with a convex lens 3. The green laser diode 6 is arranged inside the lamp body 1. A go-ahead sign film 7 is arranged between the convex lens 3 and the green laser diode 6. When the green laser diode 6 is lit, the convex lens 3 projects the image on the go-ahead sign film 7 onto the road surface of the lane.

[0041] The red laser projection lamp 610 and the green laser projection lamp 620 respectively use the red laser diode 4 and the green laser diode 6 as light sources to project the image on the no-entry sign film 5 or the image on the go-ahead sign film 7, and the projection lamp has a simple structure. At the same time, since the laser diode has the advantages of single color, high efficiency, small volume, and long life, the laser projection lamp using the laser diode as the light source has the advantages of small volume, high luminous efficiency, fast heat dissipation, and long service time.

[0042] In one embodiment, a red laser diode 4 with a light emission range of 650±10nm and a green laser diode 6 with a light emission range of 532±10nm are selected as the monochromatic light source of the projection lamp. The power of the red laser diode 4 is 5W, and the power of the green laser diode 6 is also 5W. A laser diode with a power of 5W can meet the light emission requirements of the projection lamp, and the power consumption is low.

[0043] In one embodiment, the control card 300 includes an Ethernet connection port, an RS485 connection port or a switch connection port. Therefore, the control card 300 supports multiple communication modes such as Ethernet control, RS485 control and switch, and is compatible with multiple external devices for communication connection, which is convenient to use.

[0044] It should be understood that those skilled in the art can make improvements or changes based on the above description, and all these improvements and changes should fall within the scope of protection of the claims attached to this application.

[0045] The above is an exemplary description of the patent application in conjunction with the accompanying drawings. It is obvious that the implementation of the patent application is not limited to the above-mentioned method. As long as various improvements are made by adopting the method concept and technical solution of the patent application, or the concept and technical solution of the patent application are directly applied to other occasions without improvement, they are all within the scope of protection of this application.

Claims

1. A lane indicator with laser display projection, characterized in that: It includes a housing, a front traffic light board and a rear traffic light board, wherein the front traffic light board and the rear traffic light board are respectively arranged on two sides of the housing, the housing is provided with a power supply, a control card, a red laser projection light and a green laser projection light, and the power supply, the front traffic light board, the rear traffic light board, the red laser projection light and the green laser projection light are all electrically connected to the control card; The projection end of the red laser projection lamp and the projection end of the green laser projection lamp are both arranged downward to project the projection onto the lane below the shell; The light source of the red laser projection lamp is a red laser diode, and the light source of the green laser projection lamp is a green laser diode.

2. The lane indicator with laser display projection according to claim 1, characterized in that: A constant current driving component is connected between the red laser projection lamp, the green laser projection lamp and the control card.

3. The lane indicator with laser display projection according to claim 1, characterized in that: The shell is provided with an adjustment fixing plate, and the upper ends of the red laser projection lamp and the green laser projection lamp are fixed to the adjustment fixing plate. The adjustment fixing plate is tilted so that the projection light path of the red laser projection lamp and the projection light path of the green laser projection lamp are tilted and projected onto the lane.

4. The lane indicator with laser display projection according to claim 3, characterized in that: The red laser projection lamp includes a lamp body, one end of which is provided with a laser diode heat sink and the other end is provided with a convex lens. The red laser diode is arranged inside the lamp body, and a no-passing sign film is provided between the convex lens and the red laser diode. When the red laser diode is lit, the convex lens projects the image on the no-passing sign film onto the road surface of the lane.

5. The lane indicator with laser display projection according to claim 4, characterized in that: The green laser projection lamp includes a lamp body, one end of which is provided with a laser diode heat sink and the other end is provided with a convex lens. The green laser diode is arranged inside the lamp body, and a passage-allowed sign film is provided between the convex lens and the green laser diode. When the green laser diode is lit, the convex lens projects the image on the passage-allowed sign film onto the road surface of the lane.

6. The lane indicator with laser display projection according to claim 3, characterized in that: The adjusting fixing plate is rotatably connected to the housing via a damping movable shaft, and the damping movable shaft is parallel to the horizontal direction.

7. The lane indicator with laser display projection according to claim 3, characterized in that: An inclined angle is formed between the projection light path of the red laser projection lamp or the green laser projection lamp and the surface of the projected lane, and the opening of the inclined angle follows the advancing direction of the traffic flow corresponding to the lane.

8. The lane indicator with laser display projection according to claim 1, characterized in that: The light emitting range of the red laser diode is 650±10nm, and the light emitting range of the green laser diode is 532±10nm.

9. The lane indicator with laser display projection according to claim 8, characterized in that: The power of the red laser diode is 5W, and the power of the green laser diode is 5W.

10. The lane indicator with laser display projection according to claim 1, characterized in that: The control card includes an Ethernet connection port, an RS485 connection port or a switch quantity connection port.

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