JP2022022684A - Light irradiation device and information transmission system - Google Patents

Abstract

To provide a light irradiation device and information transmission system capable of supporting a safe vehicle passage at an intersection where time-difference system traffic signals are arranged.SOLUTION: When a time-difference system traffic signal 10 on a side of an own vehicle 81 is in a green lamp lighting state and a time-difference system traffic signal 11 on a side of an opposing lane 82 of an own vehicle lane 81 is in a red lamp lighting state at an intersection 80 where the time-difference system traffic signals 10, 11 are arranged, light irradiation devices 3A, 3B display, inside the intersection 80, at least one plotting pattern between arrow patterns 71 indicating that the advance of the own vehicle 61 on the own vehicle lane 81 is promoted and a cross-mark pattern 72 indicating that the advance of an opposing vehicle 62 on the opposing lane 82 is stopped.SELECTED DRAWING: Figure 5

Description

The present invention relates to a light irradiation device and an information transmission system.

Patent Document 1 discloses a vehicle lamp that increases the degree of flexibility of the color of laser irradiation and enables the driver to draw a line or a mark that makes it easy for the driver to recognize the road condition. The vehicle lamp can emit laser light (R, G, B) of a plurality of colors, a light source capable of changing the color of the irradiation light, and scanning the laser light to draw a predetermined figure on the irradiation destination. It is equipped with an optical mechanism.

Japanese Unexamined Patent Publication No. 2015-164828

By the way, at an intersection where a staggered vehicle traffic light is arranged, the switching timing between the signal on the own lane side and the signal on the oncoming lane side is different, so it is possible to grasp the status of the signal on the oncoming lane side from the own lane side. Can not. Therefore, accidents caused by right-turning vehicles occur frequently at intersections where staggered traffic lights are placed.

Therefore, an object of the present invention is to provide a light irradiation device and an information transmission system capable of supporting safe vehicle passage at an intersection where a staggered vehicle traffic light is arranged.

In order to achieve the above object, the light irradiation device according to one aspect of the present invention is
At the intersection where the staggered vehicle traffic light is arranged, the staggered vehicle traffic light on the first lane side is a blue light and the staggered traffic light on the second lane side, which is the oncoming lane of the first lane, is a red light. At a certain time, at least one of a first drawing pattern indicating that the first vehicle on the first lane side is promoted and a second drawing pattern indicating that the second vehicle on the second lane side is stopped. The drawing pattern of is displayed in the intersection.

According to this configuration, it is possible to provide a light irradiation device capable of supporting safe vehicle passage at an intersection where a staggered vehicle traffic light is arranged.

Further, the information transmission system according to one aspect of the present invention is
With the above light irradiation device
The sound alarm device and
It is an information transmission system equipped with
The sounding device, in synchronization with the display of the first drawing pattern, sounds a sound indicating that the first vehicle is advancing, toward the first vehicle.

According to this configuration, it is possible to promote driving support for the driver of the first vehicle by sounding a voice prompting the driver of the vehicle to proceed.

According to the present invention, it is possible to provide a light irradiation device and an information transmission system capable of supporting safe vehicle passage at an intersection where a staggered vehicle traffic light is arranged.

It is a block diagram of the information transmission system provided with the light irradiation apparatus which concerns on embodiment of this invention. It is a figure which shows the light irradiation apparatus which concerns on 1st Embodiment, (a) is a light irradiation apparatus integrated with a blue signal lamp, (b) is a light irradiation apparatus integrated with a red signal lamp. 2 is a cross-sectional view taken along the line AA of FIG. 2A. It is a figure which shows the drawing pattern displayed on the road surface by a light irradiation apparatus. It is a figure which shows the drawing pattern displayed in the intersection. It is a figure which shows the light lighting apparatus which concerns on 2nd Embodiment, (a) is a separate type light irradiation apparatus corresponding to a blue signal lamp, (b) is a separate type light irradiation apparatus corresponding to a red signal. 6 is a cross-sectional view taken along the line BB of FIG. 6A. It is a figure which shows the drawing pattern displayed on the road surface from a light irradiation apparatus. It is a figure which shows the drawing pattern displayed in the intersection from the light irradiation apparatus which concerns on 3rd Embodiment.

Hereinafter, embodiments of the present invention (hereinafter referred to as the present embodiment) will be described with reference to the drawings. The dimensions of each member shown in this drawing may differ from the actual dimensions of each member for convenience of explanation.

(First Embodiment)
FIG. 1 is a block diagram of an information transmission system 1 including a light irradiation device 3 according to the first embodiment.
As shown in FIG. 1, the information transmission system 1 includes traffic lights 10 and 11 for staggered vehicles. The staggered vehicle traffic lights 10 and 11 are, for example, traffic lights installed to alleviate road congestion caused by differences in traffic volume depending on the lane, and the period during which progress is permitted (green light lighting period) differs depending on the lane. It is a traffic light that is controlled so as to. The staggered vehicle traffic lights 10 and 11 are installed at specific intersections, T-junctions, and the like. For example, at an intersection where a traffic light is installed, the staggered vehicle traffic lights 10 and 11 are installed between opposite lanes. In FIG. 1, (first lane side) and (second lane side) mean, for example, when the lane in which the own vehicle is traveling is the first lane, the lane in which the oncoming vehicle is traveling is the second lane. The own lane side is the first lane side, and the oncoming lane side is the second lane side.

The staggered vehicle traffic lights 10 and 11 have a signal lamp 2, a light irradiation device 3, a sound alarm device 4, and a control unit 5, respectively.

The signal lamp 2 is a signal lamp similar to the "blue signal lamp", the "yellow signal lamp", and the "red signal lamp" mounted on a normal traffic light.

The light irradiation device 3 is an irradiation device for displaying a predetermined drawing pattern that calls attention to the driver on the road surface in an intersection or the like. The predetermined drawing pattern includes, for example, a drawing pattern for transmitting to the driver that the vehicle is to be advanced, a drawing pattern for transmitting to the driver that the vehicle is to be stopped, and the like.

The sound alarm device 4 is a device for transmitting the sound of the content corresponding to the drawing pattern displayed on the road surface to the driver of the vehicle in the intersection or the like. The sound reporting device 4 is composed of a directional voice speaker. The voice corresponding to the drawing pattern includes, for example, "pip-pip-pip" as a voice for urging the driver to proceed with the vehicle.

The control unit 5 controls the operations of the signal lamp device 2, the light irradiation device 3, the sound alarm device 4, and the like, respectively.

The staggered vehicle traffic lights 10 and 11 of the information transmission system 1 are communicably connected to the management center 9. The control unit 5 of the staggered vehicle traffic lights 10 and 11 operates the signal lamp 2, the light irradiation device 3, the sound alarm device 4, etc. based on the control signal transmitted from the collective control unit 91 of the management center 9. Is configured to set and update.

Next, the configuration of the staggered vehicle traffic light 10 (11) will be described with reference to FIGS. 2 to 4.
FIG. 2 is a diagram showing a light irradiation device 3 (3A, 3B) according to the first embodiment. The light irradiation device 3 (3A, 3B) of the first embodiment is a light irradiation device integrally configured with the signal lamp device 2. FIG. 2A is a light irradiation device 3A integrally configured with the blue signal lamp 21b. FIG. 2B is a light irradiation device 3B integrally configured with the red signal lamp 21r.

As shown in FIG. 2A, a staggered vehicle traffic light 10 (11) equipped with a light irradiation device 3A integrally configured with a blue signal lamp 21b has a normal traffic light 10 (11) next to the light irradiation device 3A. A yellow signal lamp 21y similar to a traffic light is provided, and a red signal lamp 21r similar to a normal traffic light is provided next to the yellow signal lamp 21y. The light irradiation device 3A integrally configured with the blue signal lamp 21b uses the blue light emitted from the blue signal lamp 21b to draw a predetermined drawing pattern to draw the driver's attention on the road surface in an intersection or the like. It is configured to display in. In the light irradiation device 3A using the blue light emitted from the blue signal lamp 21b, for example, a drawing pattern for transmitting to the driver to urge the driver to move the vehicle is displayed. Specifically, as shown in the light irradiation device 3A of FIG. 2A, an "arrow pattern" for transmitting a travel permission direction is displayed on the road surface with blue light.

As shown in FIG. 2 (b), in the staggered vehicle traffic light 10 (11) equipped with the light irradiation device 3B integrally configured with the red signal lamp 21r, a normal traffic light 10 (11) is installed next to the light irradiation device 3B. A yellow signal lamp 21y similar to a traffic light is provided, and a blue signal lamp 21b similar to a normal traffic light is provided next to the yellow signal lamp 21y. The light irradiation device 3B, which is integrally configured with the red traffic light, uses the red light emitted from the red traffic light 21r to draw a predetermined drawing pattern to draw the driver's attention on the road surface in an intersection or the like. It is configured to display. In the light irradiation device 3B using the red light emitted from the red signal lamp, for example, a drawing pattern for transmitting to the driver to stop the progress of the vehicle is displayed. Specifically, as shown in the light irradiation device 3B of FIG. 2B, a "cross mark pattern" for transmitting that progress is not permitted is displayed on the road surface with red light.

FIG. 3 is a cross-sectional view taken along the line AA of FIG. 2A. As shown in FIG. 3, the light irradiation device 3A includes an LED light source 31, a diffuser lens 32, and a condenser lens 33.

The LED light source 31 is provided on the back side of the light irradiation device 3A. The LED light source 31 is composed of a plurality of LEDs arranged in a matrix. The LED light source 31 of the light irradiation device 3A integrally configured with the blue signal lamp 21b is a light source common to the light source of the blue signal lamp 21b. The LED light source 31 of the light irradiation device 3A is a blue LED.

The diffuser lens 32 is a lens that diffuses the light emitted from the LED light source 31 and emits it as a blue light like a normal traffic light. The diffuser lens 32 is provided so as to surround the condenser lens 33. The diffuser lens 32 is composed of, for example, a lens in which a plurality of so-called cylindrical lenses having a shape obtained by cutting out a part of a cylinder are continuously arranged. The diffusing lens 32 may be composed of a resin material constituting the lens to which a light diffusing material is added, a lens surface to which a light diffusing film is attached, or the like.

The condensing lens 33 is a lens that condenses the light emitted from the LED light source 31 and emits it as a blue drawing. The condenser lens 33 has a shape corresponding to the drawing pattern. The condenser lens 33 of the light irradiation device 3A is formed in an "arrow pattern" which is a shape that promotes the progress of the vehicle. The condenser lens 33 is composed of, for example, a convex lens, a plano-convex lens, or the like.

The light irradiation device 3A is formed so that the arrow-shaped condensing lens 33 is incorporated in the region of the diffuser lens 32 having a circular shape. When displaying the "arrow pattern" on the road surface, the light irradiation device 3A irradiates the LED light source 31 corresponding to the condenser lens 33, that is, the condenser lens 33 among a plurality of LEDs arranged in a matrix. Turn on the LED. The light emitted from the LED light source 31 is condensed by the condenser lens 33 and irradiated on the road surface in the intersection or the like, so that the arrow pattern is displayed. On the other hand, when the "arrow pattern" is not displayed on the road surface, the LED provided for irradiating the condenser lens 33 among the plurality of LEDs arranged in a matrix is turned off.

Although not shown, the light irradiation device 3B also has the same configuration as the light irradiation device 3A. However, in the case of the light irradiation device 3B, it is integrally configured with the red signal lamp 21r, and the shape of the condenser lens 33 is formed in a "cross mark pattern" that stops the progress of the vehicle.

FIG. 4 is a diagram showing a drawing pattern displayed on the road surface by the light irradiation device 3A. As shown in FIG. 4, the light irradiation device 3A collects the blue light emitted from the LED light source 31 by the condenser lens 33, and displays the “arrow pattern” 71 on the road surface 83 such as an intersection.

Next, an operation example of the information transmission system 1 will be described.
FIG. 5 shows a drawing pattern (“arrow pattern” 71 and “cross mark pattern” 72) displayed on the road surface 83 in the intersection 80 where the staggered vehicle traffic lights 10 and 11 are installed. It shows the situation.

The staggered vehicle traffic lights 10 and 11 at the intersection 80 shown in FIG. 5 are on the oncoming lane 82 side where the staggered vehicle traffic light 10 on the own lane 81 side where the own vehicle 61 is traveling and the oncoming vehicle 62 are traveling. The traffic light 11 for a staggered vehicle is controlled so as to switch from the state of the green light light that allows the progress together to the state of the red light light that the traffic light 11 for the staggered vehicle on the oncoming lane 82 side does not allow the progress first.

First, at an intersection 80, it is assumed that the own vehicle 61 enters the intersection 80 from the own lane 81 and tries to turn right at the intersection 80. When both the staggered vehicle traffic light 10 on the own lane 81 side and the staggered vehicle traffic light 11 on the oncoming lane 82 are in the green light state, the own vehicle 61 is in a situation where the flow of the vehicle on the oncoming lane 82 side is not interrupted. Can't turn right, so it stops and waits for a right turn.

Next, it is assumed that the staggered vehicle traffic light 11 on the oncoming lane 82 side first switches from the state of the green light to the state of the yellow light and then to the state of the red light. If the driver of the own vehicle 61 does not recognize that the intersection 80 is where the staggered vehicle traffic lights 10 and 11 are installed, the driver of the own vehicle 61 is the staggered vehicle traffic light on the oncoming lane 82 side. Assuming that 11 is still in the state of green light, it continues to wait for a right turn. Therefore, the following vehicle 63, which is waiting for a right turn in the same own lane 81 as the own vehicle 61, continues to be in the right turn standby state according to the own vehicle 61. That is, although the staggered vehicle traffic light 11 on the oncoming lane 82 side is in the red light light state and only the staggered vehicle traffic light 10 on the own lane 81 side is in the green light light state, it is on the own lane 81 side. The vehicle remains stopped and road congestion cannot be alleviated.

Therefore, in order to solve this situation, the control unit 5 of the staggered vehicle traffic light 10 on the own lane 81 side uses an arrow pattern 71 for transmitting that the right turn progress of the own vehicle 61 is promoted as shown in FIG. It is displayed in blue by the light irradiation device 3A on the road surface 83 in front of the own vehicle 61 in the intersection 80. The control unit 5 starts displaying the arrow pattern 71 after a certain period of time (for example, 2 to 3 seconds) has elapsed after the staggered vehicle traffic light 11 on the oncoming lane 82 side is switched to the red signal lighting state. The road surface 83 in FIG. 5 displays both an arrow prompting straight ahead and an arrow prompting a right turn as an arrow pattern 71. For example, when the lane in which the own vehicle 61 is traveling is a lane dedicated to a right turn. May display only the arrow that prompts you to turn right.

Further, the control unit 5 transmits a voice for further urging the right turn progress of the own vehicle 61 by the sound alarm device 4 in synchronization with the display of the arrow pattern 71. The sound reported from the sounding device 4 is output toward the arrow pattern 71 displayed in the intersection 80, that is, transmitted to the driver of the own vehicle 61.

Further, as shown in FIG. 5, the control unit 5 of the staggered vehicle traffic light 11 on the oncoming lane 82 side has a cross mark pattern 72 for transmitting the stop of the oncoming vehicle 62 going straight for the staggered vehicle in the intersection 80. It is displayed in red by the light irradiation device 3B on the road surface 83 in front of the traffic light 11. The cross mark pattern 72 displayed on the oncoming lane 82 side may be displayed at a position on the road surface 83 that can be recognized by the driver of the own vehicle 61 who is about to turn right.

As described above, in the light irradiation device 3 according to the present embodiment, at the intersection 80 where the staggered vehicle traffic lights 10 and 11 are arranged, the staggered vehicle traffic light 10 on the own lane 81 side is in a state of blue light. When the staggered vehicle traffic light 11 on the oncoming lane 82 side of the own lane 81 is in the state of red light, the arrow pattern 71 (first drawing pattern) indicating that the own vehicle 61 on the own lane 81 side is promoted to proceed. An example) and a cross mark pattern 72 (an example of a second drawing pattern) indicating that the oncoming vehicle 62 on the oncoming lane 82 side has stopped traveling are configured to be displayed in the intersection 80. According to this configuration, at the intersection 80 where the staggered vehicle traffic lights 10 and 11 are arranged, the drawing pattern for promoting the progress of the vehicle and the drawing pattern for stopping the progress of the vehicle are displayed in the intersection 80 to display the own vehicle. It is possible to make the drivers of the 61 and the oncoming vehicle 62 accurately recognize the situation instructed by the staggered vehicle traffic lights 10 and 11. This makes it possible to support safe vehicle passage at the intersection 80 where the staggered vehicle traffic lights 10 and 11 are arranged.

Further, according to the light irradiation device 3, the arrow pattern 71 includes a drawing pattern that promotes the right turn progress of the own vehicle 61 at the intersection 80. Therefore, it is possible to support the safe passage of a right-turning vehicle, which is particularly prone to accidents, at the intersection 80 where the staggered vehicle traffic lights 10 and 11 are arranged.

Further, according to the light irradiation device 3, the arrow pattern 71 for promoting the progress of the vehicle is displayed in blue, and the cross mark pattern 72 for stopping the progress of the vehicle is displayed in red. In this way, like the lights of the traffic light (traffic light), the pattern that encourages the progress of the vehicle is displayed in blue, which is the same color as the light of the blue signal light 21b, and the pattern that stops the progress of the vehicle is the red signal light 21r. By displaying it in red, which is the same color as the light, it is possible to intuitively alert the driver to the progress or stop of the vehicle.

Further, according to the light irradiation device 3, the light irradiation device 3A in the staggered vehicle traffic light 10 on the own lane 81 side after a certain period of time has elapsed after the staggered vehicle traffic light 11 on the oncoming lane 82 side is switched to the red light. The display of the arrow pattern 71 is started. As a result, the arrow pattern 71 can be displayed after the oncoming vehicle 62 has stopped traveling to encourage the vehicle 61 to proceed, so that the safety of traffic at the intersection 80 can be ensured more reliably.

Further, the light irradiation device 3A is a signal lamp for blue light mounted on the staggered vehicle signal device 10, and diffuses the light emitted from the LED light source 31 and the LED light source 31 to emit light as a blue light. A diffuser lens 32 having a shape corresponding to the arrow pattern 71 and a condensing lens 33 capable of condensing the light from the LED light source 31 is provided, and the light emitted from the LED light source 31 is collected by the condensing lens 33. The arrow pattern 71 is displayed by being focused and irradiating on the road surface 83 of the intersection 80. The light irradiation device 3B is a signal lamp for red light mounted on the staggered vehicle signal 11 and diffuses the light emitted from the LED light source 31 and the LED light source 31 to emit light as a red light. The diffuser lens 32 is provided, and the condenser lens 33 having a shape corresponding to the cross mark pattern 72 and capable of condensing the light from the LED light source 31 is provided, and the light emitted from the LED light source 31 is the condensing lens 33. The cross mark pattern 72 is displayed by being focused by light and irradiating on the road surface 83 of the intersection 80. According to this configuration, the signal lamps 21b and 21r of the staggered vehicle traffic lights 10 and 11 can also be used as the light irradiation devices 3A and 3B (road surface drawing device), so that the light sources of the signal lamps 21b and 21r are used. The drawing pattern can be displayed in the same color as the colors of the signal lamps 21b and 21r. Therefore, since it is not necessary to newly install an additional light source for the light irradiation devices 3A and 3B in the staggered vehicle traffic lights 10 and 11, the manufacturing cost can be suppressed and the control of the light irradiation devices 3A and 3B can be simplified. can.

Further, the information transmission system 1 according to the present embodiment includes light irradiation devices 3A and 3B and a sound alarm device 4, and the sound alarm device 4 synchronizes with the display of the arrow pattern 71 and the own vehicle 61. A voice indicating that the progress of the system is urged is sent to the own vehicle 61. In this way, by reporting to the driver of the own vehicle 61 a voice prompting the progress of the vehicle in combination with the display of the arrow pattern 71, the driving support for the driver is not only visual but also auditory. Can also be promoted. In particular, since the sound reporting device 4 is composed of a directional speaker, for example, it is possible to sound the sound only to the right-turning vehicle where the importance of alerting is high (that is, accidents are likely to occur), and the time difference. It is possible to effectively suppress the occurrence of a right-handed accident at the intersection 80 where the traffic light 10 (10) for the type vehicle is arranged.

In the above embodiment, the arrow pattern 71 is displayed by the light irradiation device 3A of the staggered vehicle traffic light 10, and the cross mark pattern 72 is displayed by the light irradiation device 3B of the staggered vehicle traffic light 11. Not limited to. For example, both the arrow pattern 71 and the cross mark pattern 72 may be displayed on the one side of the light irradiation device 3A or the light irradiation device 3B. Further, depending on the situation in the intersection 80, at least one of the arrow pattern 71 and the cross mark pattern 72 may be displayed on the road surface 83.

Further, in the above embodiment, the control center 9 transmits a control signal to all the staggered vehicle traffic lights to centrally control the operation of each staggered vehicle traffic light, but the present invention is not limited to this. For example, when installing a pair of traffic lights 10 and 11 for a staggered vehicle at an intersection 80, the operation is performed for each pair of traffic lights so that the staggered vehicle traffic light 10 and the staggered vehicle traffic light 11 are interlocked with each other. It may be an individual control to be set.

Further, in the above embodiment, when the own vehicle 61 makes a right turn, driving support is provided by using the arrow pattern 71 from the light irradiation device 3A and the sound from the sound alarm device 4, but the present invention is not limited to this. For example, an image captured by an in-vehicle camera of the own vehicle 61 or a surveillance camera mounted on an infrastructure facility may be used. Specifically, the control unit 5 acquires an image of the oncoming lane 82 side captured by the in-vehicle camera or the monitoring camera, and from the analysis result of the captured image, the traveling oncoming vehicle is moved to the oncoming lane 82 side. After it is confirmed that there is no such thing, the display of the arrow pattern 71 and the sound from the sound device 4 may be performed.

(Second embodiment)
FIG. 6 is a diagram showing a light irradiation device 103 (103A, 103B) according to the second embodiment. The light irradiation device 103 (103A, 103B) of the second embodiment is a light irradiation device provided separately from the signal lamp device 2. FIG. 6A is a light irradiation device 103A mounted on a staggered vehicle traffic light 110 as a light irradiation device corresponding to the blue signal lamp 121b. FIG. 6B is a light irradiation device 103B mounted on a staggered vehicle traffic light 111 as a light irradiation device corresponding to the red signal lamp 121r.

As shown in FIG. 6A, the staggered vehicle traffic light 110 (111) equipped with the light irradiation device 103A has a blue signal lamp 121b, a yellow signal lamp 121y, and a red signal lamp 121r, which are the same as those of a normal traffic light. Is provided. Then, the light irradiation device 103A corresponding to the blue signal lamp 121b is attached to the lower side of the blue signal lamp 121b. The light irradiation device 103A provided separately from the blue signal lamp 121b is individually controlled independently of the blue signal lamp 121b, and a predetermined drawing pattern that calls attention to the driver is applied to the road surface in an intersection or the like. indicate. In the light irradiation device 103A corresponding to the blue signal lamp 121b, for example, a drawing pattern for transmitting to the driver to urge the driver to move the vehicle is displayed. Specifically, as shown in the light irradiation device 103A of FIG. 6A, an “arrow pattern” for transmitting the travel permission direction is displayed on the road surface with blue light.

As shown in FIG. 6B, the staggered vehicle traffic light 110 (111) equipped with the light irradiation device 103B has a blue signal lamp 121b, a yellow signal lamp 121y, and a red signal lamp 121r, which are the same as those of a normal traffic light. Is provided. The light irradiation device 103B corresponding to the red signal lamp 121r is attached to the lower side of the red signal lamp 121r. The light irradiation device 103B provided separately from the red traffic light 121r is individually controlled independently of the red traffic light 121r, and a predetermined drawing pattern that draws the driver's attention is placed on the road surface in an intersection or the like. indicate. In the light irradiation device 103B corresponding to the red signal lamp 121r, for example, a drawing pattern for transmitting to the driver to stop the progress of the vehicle is displayed. Specifically, as shown in the light irradiation device 103B of FIG. 6B, a "cross mark pattern" for transmitting that progress is not permitted is displayed on the road surface with red light.

FIG. 7 is a cross-sectional view taken along the line BB of FIG. 6A. As shown in FIG. 7, the blue signal lamp 121b has the same configuration as the blue signal lamp of a normal traffic light, and has an LED light source 31 and a diffuser lens 32. The light irradiation device 103A has an LED light source 131 and a condenser lens 133.

Since the LED light source 31 and the diffuser lens 32 of the blue signal lamp 121b are the same as the configurations of the LED light source 31 and the diffuser lens 32 of the first embodiment, the description thereof will be omitted.

The LED light source 131 of the light irradiation device 103A is provided on the back surface side of the light irradiation device 103A, and is composed of a plurality of LEDs arranged in a matrix like the LED light source 31. The LED light source 131 of the light irradiation device 103A corresponding to the blue signal lamp 121b is a blue LED.

The condenser lens 133 is a lens that condenses the light emitted from the LED light source 131 and emits it as a blue drawing, and is composed of, for example, a convex lens, a plano-convex lens, and the like. The condenser lens 133 has a shape corresponding to a drawing pattern, and in the case of the light irradiation device 103A, it is formed in an "arrow pattern" which is a shape that promotes the progress of the vehicle.

The light irradiation device 103A displays the arrow pattern by condensing the light emitted from the LED light source 131 by the condenser lens 133 and irradiating it on the road surface in the intersection or the like.
Although not shown, the light irradiation device 103B also has the same configuration as the light irradiation device 3A. However, in the case of the light irradiation device 103B, it is provided corresponding to the red signal lamp 121r, and the shape of the condenser lens 133 is formed in a "cross mark pattern" that stops the progress of the vehicle.

FIG. 8 is a diagram showing a drawing pattern displayed on the road surface by the light irradiation device 103B. As shown in FIG. 8, the light irradiation device 103B collects the red light emitted from the LED light source 131 by the condenser lens 133, and displays the “cross mark pattern” 72 on the road surface 83 such as an intersection.

As described above, the light irradiation device 103A according to the second embodiment is mounted on the time difference type vehicle signal 110 together with the blue signal lamp 121b of the time difference type vehicle signal 110, and corresponds to the LED light source 131 and the arrow pattern 71. It is provided with a condensing lens 133 that has a shape and is capable of condensing light from the LED light source 131, and the light emitted from the LED light source 131 is condensed by the condensing lens 133 and is collected on the road surface 83 of the intersection 80. By being irradiated, the arrow pattern 71 is displayed. The light irradiation device 103B is mounted on the time difference type vehicle signal 111r together with the red signal lamp 121r of the time difference type vehicle signal 111, has a shape corresponding to the LED light source 131 and the cross mark pattern 72, and is from the LED light source 131. A condenser lens 133 capable of condensing light is provided, and the light emitted from the LED light source 131 is condensed by the condensing lens 133 and irradiated onto the road surface 83 of the intersection 80, whereby the cross mark pattern 72 is formed. Is displayed. According to this configuration, since the light irradiation devices 103A and 103B (road surface drawing devices) are mounted separately from the signal lamps 121b and 121r of the staggered vehicle traffic lights 110 and 111, the application to existing traffic lights becomes easy.

(Third embodiment)
FIG. 9 is a diagram showing a drawing pattern displayed in the intersection from the light irradiation device 203 according to the third embodiment. The light irradiation device 203 (203A, 203B) of the third embodiment is mounted on the own vehicle 61 and the oncoming vehicle 62. The light irradiation device 203A mounted on the own vehicle 61 is controlled by a vehicle control unit (not shown) of the own vehicle 61. The light irradiation device 203B mounted on the oncoming vehicle 62 is controlled by a vehicle control unit (not shown) of the oncoming vehicle 62. The vehicle control unit of the own vehicle 61 and the vehicle control unit of the oncoming vehicle 62 receive the infrastructure information from the infrastructure equipment such as traffic lights and indicator lights, and transmit the traveling information of the own vehicle 61 and the oncoming vehicle 62 to the infrastructure equipment. (Road-to-vehicle communication). For example, the vehicle control unit of the own vehicle 61 and the vehicle control unit of the oncoming vehicle 62 receive infrastructure information from the control unit 5 of the staggered vehicle traffic light 10 (11), and the vehicle travel information to the control unit 5. Is configured to be able to send.

As shown in FIG. 9, at the intersection 80 and its vicinity where the staggered vehicle traffic lights 10 and 11 are arranged, the vehicle control unit of the own vehicle 61 is transmitted from the staggered vehicle traffic lights 10, 11 and the like by road-to-vehicle communication. Acquire infrastructure information such as the timing of switching traffic lights. Based on the acquired infrastructure information, the vehicle control unit of the own vehicle 61 emits a light irradiation device on the road surface 83 in front of the own vehicle 61 in the intersection 80 with an arrow pattern 71 for transmitting the promotion of the right turn of the own vehicle 61. Displayed in blue by 203A. Further, the own vehicle 61 may be provided with a sounding device 4, and the sound prompting the right turn of the own vehicle 61 may be sounded from the sounding device 4 in synchronization with the display of the arrow pattern 71.

Similarly, the vehicle control unit of the oncoming vehicle 62 acquires infrastructure information such as the switching timing of the traffic lights from the staggered vehicle traffic lights 10, 11 and the like by road-to-vehicle communication. Based on the acquired infrastructure information, the vehicle control unit of the oncoming vehicle 62 applies a cross mark pattern 72 for transmitting that the oncoming vehicle 62 stops going straight on the road surface 83 in front of the oncoming vehicle 62 in the intersection 80. Displayed in red by 203B.

In addition to the infrastructure information acquired from the staggered vehicle traffic lights 10 and 11, the vehicle control unit of the own vehicle 61 is transmitted from the vehicle control unit of the oncoming vehicle 62 to the control unit 5 of the staggered vehicle traffic light 11. Based on the travel information, the display timing of the arrow pattern 71 that conveys the prompting of the right turn progress of the own vehicle 61 may be determined. Specifically, the vehicle control unit of the own vehicle 61 starts displaying the arrow pattern 71 after it is determined that the oncoming vehicle 62 has stopped traveling based on the acquired travel information of the oncoming vehicle 62. You may.

As described above, the light irradiation device 203A according to the third embodiment is mounted on the own vehicle 61, for example, and the arrow pattern 71 is displayed from the light irradiation device 203A mounted on the own vehicle 61. The light irradiation device 203B is mounted on the oncoming vehicle 62, and the cross mark pattern 72 is displayed from the light irradiation device 203B mounted on the oncoming vehicle 62. According to this configuration, the light irradiation device 203A and the light irradiation device 203B mounted on the own vehicle 61 and the oncoming vehicle 62 are used without changing the existing infrastructure equipment at the intersection 80, and the staggered vehicle traffic light 10, It is possible to support safe vehicle passage at the intersection 80 where 11 is arranged.

Although the embodiments of the present invention have been described above, it goes without saying that the technical scope of the present invention should not be construed as being limited by the description of the present embodiments. It is understood by those skilled in the art that the present embodiment is merely an example, and various embodiments can be modified within the scope of the invention described in the claims. The technical scope of the present invention should be determined based on the scope of the invention described in the claims and the scope thereof.

1: Information transmission system, 2: Signal lamp, 3 (3A, 3B): Light irradiation device, 4: Sound alarm device, 5: Control unit, 9: Management center, 10, 11: Staggered vehicle signal, 21b, 121b: Blue traffic light, 21r, 121r: Red traffic light, 21y, 121y: Yellow traffic light, 31,131: LED light source, 32: Diffuse lens, 33,133: Condensing lens, 61: Own vehicle, 62: Opposite Vehicle, 63: Following vehicle, 71: Arrow pattern, 72: Cross mark pattern, 80: Crossing point, 81: Own lane, 82: Oncoming lane, 83: Road surface, 91: Collective control unit, 103 (103A, 103B): Optical Irradiation device, 203 (203A, 203B): Light irradiation device

Claims (10)

At the intersection where the traffic light for the staggered vehicle is arranged, the traffic light for the staggered vehicle on the first lane side is a blue light and the traffic light for the staggered vehicle on the second lane side which is the oncoming lane of the first lane is A first drawing pattern indicating that the first vehicle on the first lane side is promoted and a second drawing pattern indicating that the second vehicle on the second lane side is stopped when the red light is on. A light irradiation device that displays at least one of the drawing patterns in the intersection. The light irradiation device according to claim 1, wherein the first drawing pattern promotes the right turn progress of the first vehicle at the intersection. The light irradiation device according to claim 1 or 2, wherein the first drawing pattern is displayed in blue and the second drawing pattern is displayed in red. The light irradiation according to any one of claims 1 to 3, wherein the display of at least one of the drawing patterns is started after a certain period of time has elapsed after the staggered vehicle traffic light on the second lane side has changed to a red light. Device. The light irradiation device is a signal lamp for blue lighting mounted on the staggered vehicle traffic light.
Light source and
A diffuser lens that diffuses the light emitted from the light source and emits it as the blue light.
A condensing lens having a shape corresponding to the first drawing pattern and capable of condensing light from the light source,
Equipped with
The first drawing pattern is displayed by condensing the light emitted from the light source by the condensing lens and irradiating the road surface at the intersection, according to any one of claims 1 to 4. The light irradiation device described. The light irradiation device is a signal lamp for red lighting mounted on the staggered vehicle signal.
Light source and
A diffuser lens that diffuses the light emitted from the light source and emits it as the red light.
A condensing lens having a shape corresponding to the second drawing pattern and capable of condensing light from the light source,
Equipped with
The second drawing pattern is displayed by condensing the light emitted from the light source by the condensing lens and irradiating the road surface at the intersection, according to any one of claims 1 to 5. The light irradiation device described. The light irradiation device is mounted on the staggered vehicle traffic light together with the signal lamp of the staggered vehicle traffic light.
Light source and
A condensing lens having a shape corresponding to at least one of the drawing patterns and capable of condensing light from the light source.
Equipped with
One of claims 1 to 4, wherein the light emitted from the light source is collected by the condenser lens and irradiated on the road surface at the intersection to display at least one of the drawing patterns. The light irradiation device according to. The light irradiation device is mounted on the first vehicle and is mounted on the first vehicle.
The light irradiation device according to any one of claims 1 to 4, wherein the first drawing pattern is displayed from the light irradiation device mounted on the first vehicle. The light irradiation device is mounted on the second vehicle and is mounted on the second vehicle.
The light irradiation device according to claim 8, wherein the second drawing pattern is displayed from the light irradiation device mounted on the second vehicle. The light irradiation device according to any one of claims 1 to 9,
The sound alarm device and
It is an information transmission system equipped with
The sounding device is an information transmission system that, in synchronization with the display of the first drawing pattern, sounds a sound indicating that the first vehicle is urged to proceed to the first vehicle.

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