JP-7856384-B2 - Vehicle departure notification display device

JP7856384B2JP 7856384 B2JP7856384 B2JP 7856384B2JP-7856384-B2

Inventors

望月清隆
多々良直樹
小林範彦

Assignees

株式会社小糸製作所

Dates

Publication Date: 20260511
Application Date: 20190912
Priority Date: 20180928

Claims (11)

A vehicle departure notification display device comprising: a road surface drawing unit mounted on the vehicle that draws a predetermined shape of departure notification display on the road surface in the direction of the vehicle's movement using light; and a control unit that determines whether a departure notification display is necessary when the vehicle starts moving, controls the road surface drawing unit to draw the departure notification display when it is determined that it is necessary, and controls the road surface drawing unit again to stop the departure notification display when it is determined that the drawn departure notification display should be stopped, It has a start switch detection unit that detects the switching of the start switch and a brake detection unit that detects the switching of the brake from on to off. The control unit determines that a change from the start switch to the on state followed by a change from the brake to the off state is necessary for displaying a departure notification, and causes the road surface drawing unit to display a departure notification. It has a steering detection unit that detects right or left steering from the steering angle of the vehicle's steering system, The control unit determines the display direction of the departure notification display based on the detected steering direction of either the left or right steering device, and controls the road surface drawing unit to draw the departure notification display to the right of the vehicle when right steering is detected, or controls the road surface drawing unit to draw the departure notification display to the left of the vehicle when left steering is detected. A vehicle departure notification display device characterized in that, when it is detected that the steering angle detection angle of the steering device has returned to 0° from either a positive or negative angle, the road surface drawing unit is controlled to stop drawing the departure notification display on the road surface.
It has a speed sensor, The vehicle departure notification display device according to claim 1, characterized in that the control unit controls the road surface drawing unit to stop drawing the departure notification display on the road surface when the vehicle speed detected by the speed sensor reaches a predetermined speed or higher.
The vehicle departure notification display device according to claim 1, characterized in that the control unit controls the road surface drawing unit to stop drawing the departure notification display on the road surface when a certain amount of time has elapsed since the vehicle started moving.
It has a shift detection unit that detects whether the vehicle is moving forward or backward, The vehicle departure notification display device according to claim 1, characterized in that the control unit controls the road surface drawing unit to draw a departure notification display in front of the vehicle when the vehicle is detected moving forward, or controls the road surface drawing unit to draw a departure notification display behind the vehicle when the vehicle is detected moving backward.
It has a stop detection unit that detects when a vehicle comes to a stop, The vehicle departure notification display device according to claim 1, characterized in that the control unit causes the road surface drawing unit to draw a departure notification display when it detects that the vehicle has stopped temporarily and that a switch from the brake on to off has been detected after a non-notification determination time has elapsed since the detection of the temporary stop.
A vehicle departure notification display device according to claim 1, comprising a detection unit for detecting necessary targets for a departure notification display, which includes a shooting unit for shooting the area around the vehicle, and the control unit, after detecting a necessary target from the image captured by the shooting unit, determines that a switch from the brake on to the off state is detected, and causes the road surface drawing unit to draw a departure notification display as a necessary determination for a departure notification display.
A vehicle departure notification display device according to claim 1, comprising a radar sensor which is a unit for detecting a required target for a departure notification display, wherein the control unit determines whether a departure notification display is necessary when a switch from the brake on to the off state is detected after a required target is detected by the radar sensor, and causes the road surface drawing unit to draw a departure notification display.
A vehicle departure notification display device according to claim 1, wherein the vehicle departure notification display device has an unnecessary object detection unit for the departure notification display and an imaging unit for imaging the area around the vehicle, and the control unit controls the road surface drawing unit so as not to draw the departure notification display when an unnecessary object is detected from the image captured by the imaging unit and a switch of the brake from on to off is detected, as an unnecessary determination for the departure notification display .
A vehicle departure notification display device according to claim 1, comprising a stop signal detection unit which is an unnecessary object detection unit for the departure notification display, wherein the control unit controls the road surface drawing unit so as not to draw the departure notification display when the switching of the brake from on to off is detected after the stop signal detection unit has detected a red light of a traffic signal which is a stop signal for the vehicle as an unnecessary object, and the departure notification display is determined to be unnecessary.
A vehicle departure notification display device according to claim 1, comprising a preceding vehicle detection unit which is an unnecessary target detection unit for the departure notification display, wherein the control unit controls the road surface drawing unit so as not to draw the departure notification display when the switching of the brake from on to off is detected after the preceding vehicle detection unit has detected a preceding vehicle as an unnecessary target, as this is considered an unnecessary determination for the departure notification display.
The vehicle departure notification display device according to claim 1, comprising an automatic toll collection device detection unit which is an unnecessary target detection unit for the departure notification display, wherein the control unit controls the road surface drawing unit so as not to draw the departure notification display when the automatic toll collection device detection unit detects the passage of a vehicle towards an automatic toll collection device as an unnecessary target and then detects the switching of the brake from on to off , as an unnecessary determination for the departure notification display.

Description

This relates to a vehicle departure notification display device that alerts pedestrians and others to the vehicle's departure. Patent Document 1 discloses a vehicle departure safety control device that projects a predetermined pattern of laser light onto the road surface to alert pedestrians and others to the vehicle's departure when a parked vehicle starts moving. Japanese Patent Publication No. 2016-101797 A block diagram of a vehicle departure notification display device according to an embodiment of the present invention.A block diagram showing a vehicle departure notification display system, including a modified example of the departure notification display device shown in Figure 1.Plan view of a vehicle equipped with a departure notification display device.A cross-sectional view of line I-I in Figure 2 relating to vehicle lighting equipment including a departure notification display device.These are diagrams relating to the light deflection device for the road surface drawing section. Figure (a) is a cross-sectional view taken along line II-II in Figure 3, and Figure (b) is a cross-sectional view taken along line III-III in Figure (a).An explanatory diagram of the first embodiment in which a vehicle starting to move forward or backward from a parked position displays a departure notification on the road surface.This diagram illustrates a second embodiment in which a vehicle starting to move diagonally forward or to the left or right from a parallel parking position displays a departure notification on the road surface.This diagram illustrates a third embodiment in which a vehicle that is parked alongside another vehicle and then starts moving diagonally forward displays a departure notification on the road surface.This diagram illustrates the fourth embodiment, which detects the target of the departure notification display when the vehicle is stopped and draws the departure notification display on the road surface.This diagram illustrates the fifth embodiment, in which the system detects when the vehicle is stopped at a traffic light or similar situation, and does not display a departure notification on the road surface, thus preventing the display from being drawn. The following describes preferred embodiments of the present invention with reference to Figures 1 to 5. In each figure, the direction of the road as seen from the driver of a vehicle equipped with a vehicle lighting system including a departure notification display device is described as (up: down: left: right: forward: backward = Up: Lo: Le: Ri: Fr: Re). The vehicle C shown in Figure 2 has a pair of left and right headlights 1 each equipped with a departure notification light 2, including the departure notification display device 3 shown in Figure 1, which illuminates the road surface in front of the vehicle. Similarly, the pair of left and right rear combination lamps 4 of the vehicle headlights 1 are also equipped with a pair of departure notification light devices 2, including the departure notification display device 3, which illuminates the road surface behind the vehicle. Note that the departure notification display device 3 may be omitted from one of the left or right headlights 1 (or rear combination lamps), or one for the front and one for the rear may be mounted in a location such as the center of the vehicle body, or the rear departure notification display device 3 may be omitted. The departure notification display device 3 shown in Figure 1 may include any or all of the following: a control unit 5 composed of a CPU or other arithmetic control device, a road surface drawing unit 6, a brake sensor 7, a start switch sensor 8, a shift sensor 9, a steering angle sensor 10, a speed sensor 11, a car navigation system 12, a shooting unit 13, a radar sensor 14, an automatic toll collection terminal 15, and a turn signal lamp sensor 16. Furthermore, Figure 1A shows a vehicle departure notification display system 33, which includes a departure notification display device 3', a modified version of the vehicle departure notification display device 3 shown in Figure 1. The vehicle departure notification display system 33 in Figure 1A is a system used in vehicles equipped with an autonomous driving system, and consists of a departure notification display device 3', which includes a control unit 5 and a road surface drawing unit 6 (not shown) mounted on a vehicle (not shown), and a brake sensor 7, start switch sensor 8, shift sensor 9, steering angle sensor 10, speed sensor 11, car navigation system 12, imaging unit 13, radar sensor 14, automatic toll collection terminal 15, and turn signal lamp sensor 16, excluding the control unit 5 and road surface drawing unit 6 from the vehicle departure notification display device 3 of Figure 1. The brake sensor 7, start switch sensor 8, shift sensor 9, steering angle sensor 10, speed sensor 11, car navigation system 12, imaging unit 13, radar sensor 14, automatic toll collection terminal 15, and turn