JP2020097324A - On-vehicle road marking device and attention system for road - Google Patents

Abstract

To alert a driver of a following vehicle to the presence of a vehicle ahead, and to provide information for prohibiting the driver of the following vehicle from passing or overtaking a service car.SOLUTION: There is provided an on-vehicle road marking device 2 which is loaded on a vehicle B and irradiates light so that a linear light sign L along a width direction of a traveling lane W1 is drawn on a road surface on a rear side in the traveling direction of the vehicle B. The on-vehicle road marking device 2 includes a projector 3 for irradiating light so that the linear light sign L is drawn on a road surface of the traveling lane W1, and on a road surface of an adjacent lane W2 adjacent to the traveling lane W1. An attention system 1 for a road including the same is also provided.SELECTED DRAWING: Figure 4

Description

INDUSTRIAL APPLICABILITY The present invention is a vehicle-mounted road that is mounted on a vehicle (for example, a work vehicle for road maintenance) and can illuminate a road surface behind the vehicle in the traveling direction to alert a driver or the like of a following vehicle. The present invention relates to a marking device and a road alert system.

On highways and the like, work vehicles are used for road maintenance such as road surface cleaning, watering, and snow removal. Road maintenance work may be performed while a work vehicle is running. However, the traveling speed of the work vehicle at this time is often lower than the traveling speed of the general vehicle. Therefore, in order to prevent a rear-end collision, it is necessary to alert the driver of the vehicle following the work vehicle that the work vehicle is ahead. Further, depending on the content of the maintenance work, overtaking the work vehicle may cause a danger. Therefore, it may be necessary to provide the driver of the vehicle following the work vehicle with information that prohibits overtaking or overtaking the work vehicle.

On the other hand, there is a "rear fog lamp device" that is mounted on a vehicle and lights up when fog is generated to alert the following vehicle. This device has, for example, the configuration described in Patent Document 1, and is configured to emit light from the rear portion of the vehicle to the rear.

However, this "rear fog lamp device" can only alert a vehicle traveling in the same lane as a vehicle equipped with the device. For this reason, this device has not been able to completely meet the above-mentioned circumstances in the work vehicle.

Patent No. 6203541

INDUSTRIAL APPLICABILITY The present invention can alert a driver of a following vehicle of the presence of a vehicle in front of the driver, and can provide a driver of a following vehicle with information that prohibits overtaking or overtaking a work vehicle. An object of the present invention is to provide a vehicle-mounted road marking device and a road warning system that can be used.

The present invention is a vehicle-mounted road marking device that is mounted on a vehicle and emits light so that a linear light marking along the width direction of a traveling lane is drawn on a road surface behind the traveling direction of the vehicle, wherein: It is an on-vehicle road marking device comprising a light projecting unit that irradiates light on a road surface of a traveling lane and a road surface of an adjacent lane adjacent to the traveling lane so that the linear light marking is drawn.

With this configuration, it is possible to draw a line-shaped optical marking on the road surface in the traveling direction of the vehicle and on the road surface in the traveling lane and the road surface in the adjacent lane. Therefore, it is possible to call attention to the driver of the following vehicle traveling in the traveling lane and the adjacent lane that there is a vehicle equipped with the on-vehicle road marking device.

Further, the light projecting unit may irradiate light so that the linear light marking is drawn over substantially the entire width of the road surface of the traveling lane and half or more of the entire width of the road surface of the adjacent lane.

According to this configuration, since a line-shaped optical marking is drawn on substantially the entire width of the road surface of the traveling lane of the vehicle equipped with the on-vehicle road marking device, special attention is given to the driver of the following vehicle traveling in the traveling lane. In addition, it is possible to call attention to the driver of the following vehicle traveling in the adjacent lane.

Further, the light projecting unit irradiates light so that the line-shaped light marking is drawn over the entire width of the road surface of the traveling lane and half or more of the entire width on the road surfaces of the adjacent lanes on both left and right sides of the traveling lane. can do.

With this configuration, linear light markings are drawn on both lanes adjacent to the traveling lane of the vehicle on which the vehicle road marking device is installed. Therefore, even on a road having three or more lanes, the traveling lane and both adjacent lanes are not affected. It is possible to call attention to the driver of the following vehicle traveling in each lane.

In addition, the light projecting portion forms a clear portion having an illuminance of 10 lux or more in the linear light marking, and the clear portion has a length of 50% or more with respect to the entire length of the linear light marking. While being formed, the clear portion can be irradiated with light so as to be formed in both the traveling lane and the adjacent lane.

According to this configuration, a clear portion having an illuminance of 10 lux or more in the line-shaped light marking and a length of 50% or more with respect to the entire length of the line-shaped light marking is formed in both the traveling lane and the adjacent lane. Therefore, even in bad weather, for example, the driver of the following vehicle can be effectively warned.

Further, the light projecting portion forms an easily recognizable portion having a width of 100 mm or more in the linear light marking, and the easily recognizable portion has a length of 50% or more with respect to the entire length of the linear light marking. It is possible to irradiate light so that the easily visible portion is formed in both the traveling lane and the adjacent lane.

According to this configuration, the visually recognizable portion having a width of 100 mm or more in the linear light marking and having a length of 50% or more with respect to the entire length of the linear light marking is formed in both the traveling lane and the adjacent lane. Therefore, even in bad weather, for example, the driver of the following vehicle can be effectively warned.

Further, the on-vehicle road marking device includes a light blocking member for blocking the light emitted by the light projecting portion corresponding to the longitudinal end portion of the line-shaped light marking, and the line is protected by the light blocking member. The position of the longitudinal end of the light indicator can be adjusted.

According to this configuration, since the position of the longitudinal end portion of the line-shaped optical marking can be adjusted by the light shielding member, it is suitable for the situation of the road on which the vehicle equipped with the on-vehicle road marking device is traveling. It can be in a different irradiation state.

Further, the vehicle road marking device may include a snow melting portion having a heat generating member that suppresses snow landing on the light projecting portion.

According to this structure, the heat generation member suppresses snow accretion on the light projecting portion, so that the light from the light projecting portion can surely reach the road surface even during snowfall.

Further, the present invention is a road warning system including a vehicle-mounted road marking device that irradiates light so that a line-shaped light marking along the width direction of the traveling lane is drawn on the road surface behind the traveling direction, The vehicle-mounted road marking device is provided so that the line-shaped light marking is drawn on the road surface of the traveling lane and the road surface of the adjacent lane adjacent to the traveling lane, and the following vehicle by a character, a figure, or a symbol is used. It is a road alert system that includes an information display unit that displays an information display that means overtaking or prohibiting overtaking, facing backward.

With this configuration, the information display unit can allow the driver of the following vehicle to recognize the information of overtaking or overtaking prohibition.

Further, the present invention is a warning system including an on-vehicle road marking device and a guide light that emit light so that a line-shaped light marking along the width direction of the traveling lane is drawn on the road surface behind the traveling direction. The road surface of the traveling lane, and the vehicle-mounted road marking device is provided so that the linear light marking is drawn on the road surface of the adjacent lane adjacent to the traveling lane, the vehicle-mounted road marking device, It is a road alert system that irradiates light so that the line-shaped light marking is drawn only when the guide light is on.

According to this configuration, the on-vehicle road marking device and the guide light operate simultaneously, so that the driver of the following vehicle can be strongly warned.

According to the present invention, the driver of the following vehicle traveling in the traveling lane and the adjacent lane can be alerted that there is a vehicle equipped with the on-vehicle road marking device. For this reason, it is possible to alert the driver of the following vehicle that there is a vehicle ahead, and since a linear light marking is drawn on the road surface of the adjacent lane, Information can be given that prohibits overtaking or overtaking the work vehicle.

1 is a side view showing a work vehicle equipped with a road alert system including a vehicle road marking device according to an embodiment of the present invention. It is a rear view showing the work vehicle carrying the road alert system. It is a perspective view showing the above-mentioned road marking device for vehicles. It is a right view which shows the said vehicle-mounted road marking apparatus. It is a front view which shows the said vehicle road marking apparatus. It is a top view showing the above-mentioned road marking device for vehicles. It is a schematic plan view which shows the relationship between the said working vehicle, a driving lane, and an adjacent lane. It is a schematic explanatory drawing which shows the irradiation range of the light to a driving lane and an adjacent lane by the said vehicle road marking apparatus. It is a schematic explanatory drawing which shows an example of the light shielding member in the said vehicle road marking apparatus, (A) shows the form which a light shielding member slides, (B) shows the form which a light shielding member rotates. As the road alert system, the vehicle-mounted road marking device, the information display unit, showing the light projection state when the guide light (diffused rotating light) is provided, a schematic explanatory diagram when viewed from the rear of the vehicle. is there.

Next, the on-vehicle road marking device and the road warning system of the present invention will be described by taking as an embodiment a form applied to a work vehicle B which is a vehicle for road maintenance. Specific examples of the work vehicle B include a snow removal vehicle, a wet salt spraying vehicle, a road surface cleaning vehicle, a water spraying vehicle, and a sign vehicle, but are not limited to these.

The in-vehicle road marking device 2 included in the road alert system 1 of the present embodiment emits light so that a line-shaped light marking L is drawn on the road surface as shown in FIGS. 1 and 2. The light unit 3 and the support unit 4 for installing the light projecting unit 3 on the vehicle body of the work vehicle B in a desired positional relationship are provided. In the following description, the expression "front-back direction" is based on the traveling direction of the work vehicle B equipped with the road alert system 1 (vehicle-mounted road marking device 2). The expressions "vertical direction" and "width direction" are also expressions based on the work vehicle B. Unless otherwise specified, the directions in each component of the road alert system 1 (vehicle-mounted road marking device 2) will also be described using these directions. However, with respect to the part where the light projecting unit 3 is described as a single unit, the front and back may be described with reference to the light irradiation direction.

For convenience of explanation, some drawings are not shown according to the dimensions stipulated by the regulations on vehicles. Specifically, in FIGS. 1 and 2, the vehicle-mounted road marking device 2, which is a main part of the invention, is drawn in an enlarged manner compared to the actual state to clearly show the installation state. By the way, when the on-vehicle road marking device 2 is actually mounted on the work vehicle B shown in FIGS. 1 and 2, the upper end of the on-vehicle road marking device 2 is lower than the upper end of the diffused rotary light 6 described later. Preferably located at Further, it is preferable that the rear end of the on-vehicle road marking device 2 is located ahead of the rear end (specifically, the bumper) of the work vehicle B. Further, in FIGS. 7 and 8, the rear portion of the vehicle road marking device 2 is drawn so as to project rearward from the rear end (specifically, the bumper) of the work vehicle B, so that the light irradiation state can be clearly shown. ing. By the way, when the vehicle-mounted road marking device 2 is actually mounted on the work vehicle B shown in FIGS. 7 and 8, the rear end of the vehicle-mounted road marking device 2 is set to the rear end of the work vehicle B (as described above). Specifically, it is preferable to position it in front of the bumper). By making the actual mounting state as described above, both when the vehicle-mounted road marking device 2 is newly mounted or when the vehicle-mounted road marking device 2 is retrofitted to the existing working vehicle B, the working vehicle B after mounting is mounted. , Can be adapted to the regulations on vehicles.

As shown in FIGS. 3 to 6, the light projecting unit 3 includes a light emitting unit 311 that emits light and a light indicator L formed from a linear light image on the road surface (see FIGS. 7, 8, and 10). ), an irradiation unit 31 having a lens unit 312 that focuses the light emitted from the light emitting unit 311 and a main body unit 32 provided with the irradiation unit 31 are provided. In the light emitting unit 311, a plurality of LED elements 3111 are arranged on the substrate in a straight line in a horizontal row as a part of which is shown in FIG. The lens portion 312 is configured to focus the radial light from the plurality of LED elements 3111 and draw a linear light mark L on the road surface. Specifically, a flat cylindrical lens (specifically, a cylindrical Fresnel lens) is used for the lens unit 312. The main body portion 32 is a box-shaped portion that accommodates the irradiation means 31, and the front end portion with respect to the irradiation direction is adapted to allow light to pass therethrough. The work vehicle B is used outdoors, and the snowplow and the wet salt sprayer are often used during snowfall. Therefore, it is preferable that the main body 32 has a waterproof function.

In this embodiment, green light is emitted from the light projecting unit 3. Therefore, the line-shaped light marking L on the road surface becomes green. Therefore, for example, when there is snow on the road surface, the green light indicator L is formed on the white snow, so that the driver of the following vehicle can clearly recognize the light indicator L.

A light blocking member 33 is provided on each side surface of the body 32 in the width direction. The light blocking member 33 is a plate-like member for adjusting the length and the projection position of the line-shaped light marking L drawn on the road surface. The function of the light blocking member 33 will be described later. The light shielding member 33 of the present embodiment is provided with an elongated hole 332 extending in the front-rear direction based on the irradiation direction in the state shown by the solid line in FIGS. 3 and 4, and the fixing bolt 333 extending from the side surface of the main body portion 32 penetrates the light shielding member 33. ing. With the fixing bolt 333 loosened, the light shielding member 33 can be slid forwardly (in the direction of the horizontal arrow in FIG. 4) with respect to the irradiation direction, and can be brought into the state shown by the chain double-dashed line in FIG. The light blocking member 33 provided on one side in the width direction and the light blocking member 33 provided on the other side can be moved separately. In the present invention, the light blocking member 33 is not essential and may be omitted.

As shown in FIGS. 3 to 5, the support portion 4 includes a body mounting portion 41 mounted on the light projecting portion 3, a vehicle mounting portion 42 mounted on the vehicle body, a body mounting portion 41 and a vehicle mounting portion 42. And a connecting portion 43 for connecting.

The main body mounting portion 41 is a portion protruding from both side surfaces of the main body portion 32 in the width direction, and is implemented as a bolt screwed into the main body portion 32 as shown in the present embodiment. In this embodiment, as shown in FIGS. 3 and 4, three bolts are used. The body mounting portion 41 is supported by the connecting portion 43. In the present embodiment, the support structure of the main body 32 by the connecting portion 43 is a double-sided structure that is formed from both sides in the width direction. However, for example, the main body mounting portion 41 may have a cantilever structure as a portion protruding from only one side surface of the main body portion 32 in the width direction.

The vehicle mounting portion 42 is a portion in which, for example, a plate-like body is bent, and the vertical cross-sectional shape is a horizontal U-shape, and the lower surface portion 421 and the width direction both ends of the lower surface portion 421 are upwardly extended. And a side surface portion 422 that extends. The lower surface portion 421 is provided with a through hole (not shown), and can be bolted to the vehicle body of the work vehicle B or a bracket (not shown) attached to the vehicle body, for example.

The connecting portions 43 are flat plate-shaped portions fixed to the side surface portions 422 of the vehicle mounting portion 42, respectively. For example, as shown in FIGS. 3 and 4, a large number of through holes 431 are formed in the connecting portion 43, and two or more through holes 431 are arbitrarily selected from the large number of through holes 431 on one side. It can be used and screwed to the vehicle mounting portion 42. Since the large number of through holes 431 are formed, it is highly adaptable to the case where the shape of the vehicle mounting portion 42 is changed.

In addition, the connecting portion 43 has a circular through hole 432 through which one of the three bolts forming the main body mounting portion 41 penetrates and one through the lower portion of the drawing penetrates each of the three bolts and has a constant curvature. The curved elongated hole 433 is formed. With this configuration, the angle of the main body mounting portion 41 when viewed from the side (one side in the width direction) with respect to the connecting portion 43 is set to the left and right extending in the left and right direction within a range corresponding to the forming range of the curved elongated hole 433. It can be adjusted in the direction of rotation around the axis. As a result, the main body 32 can be swung with respect to the support portion 4 and the vehicle main body to which the support portion 4 is attached (the curved arrow shown in FIG. 4 and the shape shown by the two-dot chain line in the diagonal direction (the light shielding member 33). Is on the side of the main body 32 and the shape in which the light is slid forward based on the irradiation direction of the light projecting unit 3)), and the direction of the optical axis of the light emitted from the light emitting unit 311 is changed. be able to. For example, the direction of the optical axis can be adjusted from the horizontal direction to the obliquely downward direction within the range indicated by the chain double-dashed line in FIG. The shape indicated by the chain double-dashed line in FIG. 4 is a shape in which the light shielding member 33 is pulled out forward with reference to the irradiation direction.

As shown in FIGS. 1 and 2, the vehicle-mounted road marking device 2 of the present embodiment is provided with the light projecting unit 3 via the support unit 4 at the center of the working vehicle B in the width direction and above the vehicle body. Is configured. The installation position of the light projecting unit 3 in the vehicle body is not limited to the upper portion as in the present embodiment as long as the light of the light projecting unit 3 can be applied to the road surface behind the work vehicle B. Various positions such as a slightly lower position as shown in FIG. 10 and a position off the center of the work vehicle B in the width direction can be used.

In the in-vehicle road marking device 2 of the present embodiment configured as described above, the light projecting unit 3 is, as shown in FIG. 7, a traveling lane W1 (state in which the in-vehicle road marking device 2 is mounted on the vehicle body. Light is applied to the road surface of the lane (in which the work vehicle B is traveling) and the road surface of the adjacent lane W2 adjacent to the traveling lane W1 so that the linear light marking L is drawn. In the example shown in FIG. 7, the light marking L is drawn over almost the entire width of the traveling lane W1 and the adjacent lane W2, but the present invention is not limited to this as described later. The irradiation of light by the light projecting unit 3 can alert the driver of the following vehicle traveling in the traveling lane W1 and the adjacent lane W2 that the work vehicle B equipped with the on-vehicle road marking device 2 exists. Particularly on an expressway, since there are usually two or more lanes in the same direction, the vehicle-mounted road marking device 2 of this embodiment is useful on an expressway. The term “travel lane” used here refers to a lane in which the work vehicle B actually travels, and is a term of a concept different from the “travel lane” generally used on highways. ..

The light projecting unit 3 can irradiate light so that the line-shaped light marking L is drawn over substantially the entire width of the road surface of the traveling lane W1 and half the width of the road surface of the adjacent lane W2. Therefore, the driver of the following vehicle traveling in the traveling lane W1 can be particularly alerted, and at the same time, the driver of the following vehicle traveling in the adjacent lane W2 can also be alerted.

Further, as shown in FIG. 8, the light projecting unit 3 has the entire width of the road surface of the traveling lane W1 and the entire width of the road surface of each adjacent lane W2 (left adjacent lane W21 and right adjacent lane W22) on both left and right sides of the traveling lane W1. It is possible to irradiate the light so that the line-shaped light indicator L is drawn on half or more of the above. For this reason, even on a road having three or more lanes depending on the traffic volume or a road having an uphill lane, it is possible to call attention to the driver of the following vehicle traveling in the traveling lane W1 and the lanes on both sides thereof.

Although the example shown in FIG. 8 is merely an example and the present invention is not limited to this, in this example, the line-shaped light indicator L is on the road surface 4.5 m in plan view from the rear end (of the vehicle reference) of the light projecting unit 3. It is drawn with a length of 8.0 m. When the width dimension of each lane (distance between the center positions of the display lines (white lines) on the road surface) is 3.75 m, it is drawn in the traveling lane W1 with a total width of 3.75 m, and The adjacent lanes W21 and W22 on both the left and right sides of W1 are drawn with a length of 2.125 m, which is more than half of the total width (each of the above dimensions is an approximate value).

Further, the light projecting section 3 can form a clear section having an illuminance of 10 lux or more in the line-shaped light indicator L (not shown). This clear portion is one continuous light image formed with a length of 50% or more with respect to the entire length of the line-shaped light marking L. In the clear portion of the present embodiment, in order to improve visibility, the illuminance of at least a part of the light image formed with a length of 50% or more with respect to the entire length of the line-shaped light marking L is set to 20 lux or more. doing. Along with this, clear portions are formed in both the traveling lane W1 and the adjacent lane W2. In this case, since the clear portion is formed on both the traveling lane W1 and the adjacent lane W2, the driver of the following vehicle can be effectively alerted even in bad weather.

Further, the light projecting section 3 can form an easily visible section having a width of 100 mm or more in the line-shaped light indicator L (not shown). This easily visible portion is one continuous optical image formed with a length of 50% or more with respect to the entire length of the line-shaped optical indicator L. Along with this, the easily visible portion is formed in both the traveling lane W1 and the adjacent lane W2. In this case, since the easily visible portion is formed in both the traveling lane W1 and the adjacent lane W2, the driver of the following vehicle can be effectively alerted even in bad weather. It should be noted that the clear portion and the easily visible portion may be formed as one or both. When forming both, the formation range may overlap.

Further, the light projecting section 3 can include the light shielding member 33 as described above. The light blocking member 33 is a member for blocking the light emitted corresponding to the longitudinal end portion of the line-shaped light indicator L. The light-blocking member 33 can be configured so that the light-blocking member 33 slides, as schematically shown in FIG. 9A, for example. In this case, as shown by the two-dot chain line in the figure, the light is blocked by the front end portion 331 of the light-shielding member 33 that is based on the irradiation direction, so that the longitudinal direction of the light indicator L on the road surface corresponds to the sliding state. The position of the end is fixed. The light-blocking member 33 has a different form from that shown in FIGS. 3 to 6, and the light-blocking member 33 rotates around the rear end of the irradiation direction reference, as schematically shown in FIG. 9B, for example. It can also be a moving form. Even in this case, since the light is blocked by the front end portion 331 of the light blocking member 33 as indicated by the chain double-dashed line in the drawing, the longitudinal end portion of the light marking L on the road surface corresponds to the rotating state. Can be positioned. Therefore, the position of the end portion in the longitudinal direction of the line-shaped optical indicator L can be adjusted by the light blocking by the light blocking member 33. Therefore, the irradiation state can be made appropriate for the condition of the road on which the work vehicle B equipped with the on-vehicle road marking device 2 is traveling. With this light-shielding member 33, for example, on a temporary two-lane road that is a two-way traffic, the light indicator L can be drawn only on the traveling lane W1, so it is possible to confuse the driver in the opposite lane by irradiation in an unnecessary range. It can be prevented. Further, it is possible to prevent light pollution due to irradiation to the outside of the lane.

In addition, the vehicle road marking device 2 can include a snow melting portion having a heat generating member that suppresses snow from landing on the light projecting portion 3 (not shown). The snow melting part can be implemented in a form having a line heater as a heat generating member wound around the front part on the basis of the irradiation direction of the main body part 32, for example. By providing the snow melting portion in this way, since the heat generation member suppresses snow from landing on the light projecting portion 3, the light from the light projecting portion 3 can be reliably reached on the road surface even during snowfall. ..

In addition, in the present embodiment, a road alert provided with the on-vehicle road marking device 2 that irradiates light so that a line-shaped light marking L along the width direction of the traveling lane W1 is drawn on the road surface behind the traveling direction. The system 1 can be configured. As shown in FIG. 10, this road alert system 1 is a vehicle road in which a linear light mark L is drawn on the road surface of a traveling lane W1 and the road surface of an adjacent lane W2 adjacent to the traveling lane W1. A marking device 2 is provided. Along with this, it is possible to provide an information display unit 5 that indicates, to the rear, an information display that means overtaking or overtaking prohibition of the following vehicle by characters, figures, or symbols.

As shown in FIGS. 1 and 2, the information display unit 5 is provided at the rear portion of the work vehicle B, and is configured to display information in the rear by lighting an LED, for example. The information display is, for example, the characters "prohibition of overtaking" shown in FIG. As described above, according to the road alert system 1 including the information display unit 5, the information display unit 5 allows the driver of the following vehicle to recognize the information of overtaking or overtaking prohibition.

Further, in the present embodiment, the in-vehicle road marking device 2 that irradiates light so that a line-shaped light marking L along the width direction of the traveling lane W1 is drawn on the road surface behind the traveling direction, and a diffusing rotation as a guide light. A warning system including the light 6 can be configured. As shown in FIG. 10, the road warning system 1 is a vehicle-mounted road in which a linear light mark L is drawn on a road surface of a traveling lane W1 and a road surface of an adjacent lane W2 adjacent to the traveling lane W1. A marking device 2 is provided. The in-vehicle road marking device 2 irradiates light so that the line-shaped light marking L is drawn only when the diffused rotary light 6 is turned on. According to this configuration, the on-vehicle road marking device 2 and the diffused rotary light 6 operate simultaneously, so that the driver of the following vehicle can be strongly warned.

The form schematically shown in FIG. 10 is a work vehicle B equipped with a road alert system 1 including both an information display unit 5 and a diffusing rotary light 6 as a guide light. Here, the "guidance light" is a lamp that emits light so as to attract the line of sight of a viewer (driver or the like) who rides in the following vehicle by changing the intensity of light emitted to the rear of the vehicle. In addition to the diffusing rotary lamp 6, the flashing light is also applicable. In this form, the information display unit 5 is provided below the diffused rotary lamp 6. The vehicle road marking device 2 is provided below the information display unit 5. In particular, by providing the vehicle-mounted road marking device 2 below the information display unit 5, by utilizing the existence of the light L1 emitted from the light projecting unit 3 of the vehicle-mounted road marking device 2 to the road surface as shown in the figure, It is possible for the driver of the following vehicle to guide the eyes of the information display unit 5 from the road surface side. As a result, the driver of the following vehicle can be naturally directed to look at the information display unit 5, and the safety can be improved. It should be noted that this line-of-sight guidance effect is prominently exhibited when light on the way from the light projecting unit 3 to the road surface is clearly visible in the event of fog that causes poor visibility, or during snowfall. However, it is advantageous because it can improve the safety of the driver of the following vehicle.

In the form of FIG. 10, the vehicle-mounted road marking device 2 is provided below the information display unit 5, but the position of the vehicle-mounted road marking device 2 with respect to the information display unit 5 for exhibiting the gaze guidance effect. The relationship is not limited to this, and the vehicle-mounted road marking device 2 may be provided near or around the information display unit 5. However, since the in-vehicle road marking device 2 is provided below the information display unit 5, the driver of the following vehicle can be naturally prompted to follow the light L1 from the road surface to the information display unit 5. It is preferable because the visual line guiding effect can be effectively exhibited.

According to the vehicle road marking device 2 or the road warning system 1 of the present embodiment configured as described above, the vehicle road marking device is provided to the driver of the following vehicle traveling in the traveling lane W1 and the adjacent lane W2. It is possible to call attention to the existence of work vehicle B equipped with No. 2. Therefore, the driver of the following vehicle can be alerted that the work vehicle B is present in the front, and the line-shaped light marking L is also drawn on the road surface of the adjacent lane W2. Information that prohibits overtaking or overtaking the work vehicle B can be given to the driver.

Although one embodiment of the present invention has been described above, the present invention is not limited to the above embodiment, and various modifications can be made without departing from the scope of the present invention.

For example, the above-described embodiment was applied to the work vehicle B for road maintenance, but the present invention is not limited to this, and alerts the driver of a succeeding vehicle such as a dangerous goods transportation vehicle or a police vehicle. It is applicable to various vehicles that require

Further, regarding the light image on the light marking L drawn on the road surface, the specific shape of the above-mentioned "line shape" is not limited to the linear shape as in the above embodiment, and may be a curved shape or a bent shape. The shape may be such that the driver of the following vehicle can visually recognize it as a continuous light image. Further, the line-shaped optical indicators L do not have to have the same shape over the entire length, and may have a combination of different shapes. Further, the shape is not limited to the continuous shape in the longitudinal direction as in the above-described embodiment, and may be an intermittent shape with a space.

In addition, the light projecting unit 3 of the above-described embodiment has a plurality of LED elements 3111 arranged in a straight line on the substrate. However, the present invention is not limited to this, and may be linearly arranged in two or more rows. Further, the laser light may be emitted from the light projecting unit 3 without using the LED element 3111. Further, a plurality of LED elements 3111 are arranged on the substrate in a shape other than a straight line, and by providing a lens that focuses light in front of the LED elements, it is possible to form a linear light image on the road surface. ..

Further, the clear portion and the easily visible portion are one continuous optical image in the above-described embodiment. However, the invention is not limited to this, and may be a plurality of light images that are intermittently continuous.

Further, in the above-described embodiment, by providing the light projecting unit 3 with the light shielding member 33 that is a movable plate-like member, the length and the light projecting position of the line-shaped light marking L drawn on the road surface are adjusted. .. However, the configuration for the adjustment is not limited to that of the above-described embodiment, and for example, by swinging or slidingly moving the light projecting unit 3 itself in the width direction, the length of the light indicator L and the light projecting position can be adjusted. It may be configured to adjust. In addition, a part of the plurality of LED elements may be turned off. Incidentally, by configuring a part of the plurality of LED elements to be turned off, it is possible to adjust the length of the light indicator L or the brightness of the light indicator L.

Further, the vehicle road marking device 2 of the above-described embodiment is configured to be permanently attached to the vehicle (work vehicle B). However, the present invention is not limited to this, and it may be configured to be removable and attached to the vehicle (work vehicle B) as necessary. When detachable, it is advantageous because a plurality of vehicles (work vehicle B) can also serve as the vehicle road marking device 2.

Further, the information display unit 5 is not limited to a fixed type fixedly provided to the work vehicle B as in the above-described embodiment, and for example, at the time of normal traveling, the side of the work vehicle B (that is, the work vehicle B It may be a movable type such as a foldable type that is positioned parallel to the traveling direction) and rotates and faces backward when displaying information. In addition, the display body that displays the information display in the rearward direction in the information display unit 5 may be a display body that has a constant display content and cannot be changed. For example, LEDs arranged in a dot matrix form or the like. It may be a display body for selectively turning on and off the light-emitting body of, and displaying the changeable display content.

DESCRIPTION OF SYMBOLS 1... Road alert system, 2... Road marking device for vehicle, 3... Projector, 4... Support part, 5... Information display part, 6... Guide light (scattering rotary light), 31... Irradiation means, 32 ...Main body part, 33... Shading member, 41... Main body mounting part, 42... Vehicle mounting part, 43... Connecting part, 311... Light emitting part, 312... Lens part, 331... Front end part, 332... Long hole, 333... Fixing bolt , 421... Lower surface portion, 422... Side surface portion, 431... Through hole, 432... Through hole, 433... Curved elongated hole, 3111... LED element, B... Vehicle (work vehicle), L... Light indicator, L1... Light, W1 …Running lane, W2…Adjacent lane, W21…Left adjacent lane, W22…Right adjacent lane

Claims (9)

A vehicle-mounted road marking device that is mounted on a vehicle and emits light so that a line-shaped light marking along a width direction of a traveling lane is drawn on a road surface behind the traveling direction of the vehicle,
An on-vehicle road marking device comprising: a light projecting unit that irradiates light on the road surface of the traveling lane and the road surface of an adjacent lane adjacent to the traveling lane so that the linear light marking is drawn. 2. The light projecting unit irradiates light so that the linear light marking is drawn over substantially the entire width of the road surface of the traveling lane and half or more of the entire width of the road surface of the adjacent lane. In-vehicle road marking device described in. The light projecting unit irradiates light so that the line-shaped light marking is drawn over the entire width of the road surface of the traveling lane and the road surface of each adjacent lane on both the left and right sides of the traveling lane, respectively. The in-vehicle road marking device according to claim 2. The light projecting portion forms a clear portion having an illuminance of 10 lux or more in the linear light marking, and the clear portion is formed with a length of 50% or more with respect to the entire length of the linear light marking. The vehicle road marking device according to any one of claims 1 to 3, wherein the clear portion is irradiated with light so as to be formed in both the traveling lane and the adjacent lane. The light projecting portion forms an easily visible portion having a width of 100 mm or more in the linear light marking, and the easily visible portion is formed with a length of 50% or more with respect to the entire length of the linear light marking. At the same time, the easily recognizable portion irradiates light so that it is formed in both the traveling lane and the adjacent lane, and the vehicle road marking device according to any one of claims 1 to 4. The light projecting portion includes a light blocking member for blocking the light to be emitted corresponding to the longitudinal end portion of the linear light marking, and the light blocking member shields light from the longitudinal end portion of the linear light marking. The on-vehicle road marking device according to any one of claims 1 to 5, wherein the position is adjustable. The vehicle road marking device according to any one of claims 1 to 6, further comprising: a snow melting portion having a heat generating member that suppresses snow accretion on the light projecting portion. A road alert system comprising a vehicle-mounted road marking device that irradiates light so that a line-shaped light marking along the width direction of the traveling lane is drawn on the road surface behind the traveling direction,
The vehicle-mounted road marking device is provided so that the line-shaped light marking is drawn on the road surface of the traveling lane and the road surface of the adjacent lane adjacent to the traveling lane, and the following vehicle by a character, a figure, or a symbol is used. A road alert system, comprising an information display section that displays an information display that indicates overtaking or overtaking prohibition toward the rear. A warning system comprising an on-vehicle road marking device and a guide light that irradiate light so that a line-shaped light marking along the width direction of the traveling lane is drawn on the road surface behind the traveling direction,
The vehicle-mounted road marking device is provided so that the linear light marking is drawn on the road surface of the traveling lane and the road surface of an adjacent lane adjacent to the traveling lane,
The road alert system according to claim 1, wherein the on-vehicle road marking device emits light so that the line-shaped light marking is drawn only when the guide light is turned on.