Display device for vehicle

Abstract

A display device (10) for a vehicle, which, when a user performs a proceeding path changing operation as an operation for changing a proceeding path of a vehicle (5), irradiates light toward a road surface of the proceeding path side to draw a prescribed shape on the road surface, wherein, in a case where a danger warning switch (14) is turned on, the road surface drawing is prohibited.

Description

[0001] This application claims priority to Japanese Patent Application No. 2022-018546, filed February 9, 2022, which includes the entire contents of the specification, claims, drawings, and abstract of the specification by reference herein. TECHNICAL FIELD

[0002] The present disclosure relates to a display device for a vehicle that irradiates light toward a road surface of a travel path side to draw a prescribed shape on the road surface when a travel path changing operation, which is an operation for changing a travel path of the vehicle, is performed by a user. BACKGROUND

[0003] The display device for a vehicle is capable of irradiating light toward a road surface to draw a prescribed shape. For example, a display device for a vehicle is disclosed in International Publication No. 2021 / 006217 that causes a light of a travel path side of a vehicle to blink in a case where a winker lever is turned on, and irradiates light toward a road surface to draw a prescribed shape on the road surface in conjunction with the light.

[0004] Further, an electrical circuit of the light is sometimes connected to a hazard warning switch. In this case, light is sometimes irradiated toward a road surface to draw a prescribed shape on the road surface in conjunction with blinking of the light on both sides of the vehicle in a case where the hazard warning switch is turned on in the vehicle in a stop. In this case, it is feared that a surrounding pedestrian or the like is confused as to whether the vehicle is to start, and the surrounding pedestrian or the like is confused. SUMMARY

[0005] Therefore, an object of the present disclosure is to provide a display device for a vehicle that does not confuse a surrounding pedestrian or the like.

[0006] The display device for a vehicle of the present disclosure irradiates light toward a road surface of a travel path side to draw a prescribed shape on the road surface when a travel path changing operation, which is an operation for changing a travel path of the vehicle, is performed by a user, characterized in that drawing on the road surface is prohibited in a case where a hazard warning switch is turned on.

[0007] In the display device for a vehicle of the present disclosure, it is preferable that, in a case where the vehicle is in a stop and the hazard warning switch is turned on, drawing on the road surface is not performed even if the travel path changing operation is performed.

[0008] In the display device for a vehicle of the present disclosure, it is preferable that the travel path changing operation is a turning-on operation of a winker lever, and in a case where the winker lever is turned on while the vehicle is running or starting, the prohibition of drawing on the road surface is released.

[0009] In the vehicle display device of the present disclosure, it is preferable that the forward path change operation is a steering, and the prohibition of the road surface depiction is released when the steering is performed while the vehicle is running or starting.

[0010] Inventive Effects

[0011] The vehicle display device according to the present disclosure does not perform the road surface depiction in conjunction with the turn signal lamp, and thus does not cause confusion to the surrounding pedestrians and the like. BRIEF DESCRIPTION OF DRAWINGS

[0012] Figure 1 is a schematic view of a vehicle provided with a vehicle display device of one example of the embodiment.

[0013] Figure 2 is a block diagram showing the configuration of the vehicle display device of one example of the embodiment.

[0014] Figure 3 is a flowchart showing the flow of display performed by the vehicle display device of one example of the embodiment.

[0015] Figure 4 is a flowchart showing the flow of display in running performed by the vehicle display device of another example of the embodiment.

[0016] Figure 5 is a flowchart showing the flow of display in stopping performed by the vehicle display device of another example of the embodiment.

[0017] Figure 6 is a schematic view showing a display example.

[0018] Figure 7 is a schematic view showing another display example.

[0019] Figure 8 is a schematic view showing another display example.

[0020] Figure 9 is a schematic view showing another display example. DETAILED DESCRIPTION

[0021] Hereinafter, one example of the embodiment of the present disclosure will be described in detail. In the following description, specific shapes, materials, directions, numerical values, and the like are examples for making the understanding of the present disclosure easy, and can be appropriately changed according to the use, purpose, specifications, and the like.

[0022] “Vehicle”

[0023] Use Figure 1 A vehicle 5 provided with the display device 10 of one example of the embodiment will be described.

[0024] The vehicle 5 is provided with a display device 10, details of which will be described later. The vehicle 5 is an engine vehicle of four wheels, but is not limited thereto. The vehicle 5 may, for example, also be an electric vehicle or a hybrid vehicle.

[0025] "Display device"

[0026] Use Figures 1 to 3 The display device 10 as one example of an embodiment will be described.

[0027] The display device 10 as a display device for a vehicle, when a user performs a forward road change operation as an operation for changing a forward road of the vehicle 5, draws a display of a prescribed shape on a road surface by the drawing lamp 12 irradiating light toward the road surface of the forward road side. The forward road change operation includes a turning operation of the turn signal switch 13, and a case where a steering angle of a prescribed angle or more is detected by the steering angle sensor 15.

[0028] According to the display device 10, road surface drawing is not performed in conjunction with the turn signal lamp 11, so that confusion of surrounding pedestrians and the like is not caused, details of which will be described later.

[0029] As Figure 1 shown, the display device 10 is provided with: the turn signal lamps 11 provided on left and right sides of the vehicle 5, respectively; and the drawing lamps 12 provided on left and right sides of the vehicle 5, respectively, which irradiate light toward a road surface to draw a display of a prescribed shape.

[0030] Further, the display device 10 is provided with: the turn signal switch 13 for causing the turn signal lamp 11 of the forward road side to blink when the forward road of the vehicle 5 is changed; the hazard switch 14 for causing the turn signal lamps 11 of both sides of the vehicle 5 to blink; the steering angle sensor 15 for detecting a steering angle of a steering wheel; and the in-vehicle CAN (Controller Area Network) 16 (refer to Figure 2 ), which transmits a vehicle speed.

[0031] Further, the display device 10 is provided with: the ECU (Electronic Control Unit) 20 for performing on / off control of each switch 36 to 39 of a display circuit 30 described later, based on an on / off operation of the turn signal switch 13 or / and the hazard switch 14; and the display circuit 30 (refer to Figure 2 ), which is configured to include the turn signal lamp 11 and the drawing lamp 12.

[0032] The turn signal lamp 11 is a signal lamp that shows a change in the traveling direction of the vehicle 5 by flickering the traveling direction of the vehicle 5. Also, the turn signal lamp 11 functions as a hazard warning lamp by flickering all of the turn signal lamps 11 at the same time.

[0033] As described above, the turn signal lamps 11 are provided on the left and right sides of the vehicle 5, respectively. Also, the turn signal lamps 11 are provided on the front and rear sides of the vehicle 5, respectively. In the present embodiment, a configuration in which a total of four turn signal lamps 11 are provided on the front and rear and left and right sides of the vehicle 5 is adopted, but the present application is not limited thereto. The turn signal lamps 11 may, for example, be additionally provided on each of the door mirrors on the left and right sides or on each of the left and right sides of the side portions of the vehicle 5.

[0034] As described above, the delineator lamp 12 is provided on the left and right sides of the vehicle 5, respectively, and irradiates light toward the road surface to show a prescribed shape on the road surface. In the present embodiment, the delineator lamp 12 is provided in the vicinity of each of the turn signal lamps 11 and on the outer side of the turn signal lamps 11, but the present application is not limited thereto.

[0035] The delineator lamp 12 has, for example, a semiconductor light emitting element such as an LED (Light Emitting Diode), a first lens for projecting light emitted from the semiconductor light emitting element onto a projection screen, and a second lens for delineating a prescribed shape of an image on the projection screen toward the road surface. The projection screen can be formed with a transmission region corresponding to the prescribed shape to be delineated on the road surface from the beginning. Also, it can be configured to transmit various patterns of light by selectively driving a plurality of elements arranged in a matrix shape, like a transmission-type liquid crystal.

[0036] In the present embodiment, as the prescribed shape delineated by the delineator lamp 12, a shape in which a plurality of acute angle portions are arranged in a V-shape toward the traveling direction is illustrated, but the present application is not limited thereto. A shape indicating the traveling direction can be shown on the road surface.

[0037] As described above, the turn signal switch 13 flickers the turn signal lamp 11 on the side of the traveling road when the traveling road of the vehicle 5 is changed. The turn signal switch 13 is a so-called direction indicator lever, and is provided on the left or right side of the steering column. The turn signal switch 13 is a lever that can be turned, and in a case where it is turned to the left side and turned on, the left turn signal lamp 11 flickers, and in a case where it is turned to the right side and turned on, the right turn signal lamp 11 flickers.

[0038] As described above, the hazard warning switch 14 flickers all of the turn signal lamps 11. The hazard warning switch 14 is a push button type switch, and is provided between the driver's seat and the front passenger's seat.

[0039] As Figure 2As shown, the display circuit 30 has a relay circuit 31 provided with a direction indicator relay 35 that is connected / disconnected to a power supply (not shown) periodically, a left display circuit 32 to which a left turn signal lamp 11 and a delineator lamp 12 are connected in parallel, a right display circuit 33 to which a right turn signal lamp 11 and a delineator lamp 12 are connected in parallel, and a both-side display circuit 34 connected to the left display circuit 32 and the right display circuit 33.

[0040] A switch 36 is provided between the relay circuit 31 and the left display circuit 32 and the right display circuit 33. The switch 36 is switched between a left-on state in which the relay circuit 31 is connected to the left display circuit 32, a right-on state in which the relay circuit 31 is connected to the right display circuit 33, and an off state in which the relay circuit 31 is not connected to either of the left display circuit 32 and the right display circuit 33.

[0041] The switch 36 is driven and controlled in conjunction with the state of the turn signal switch 13. Specifically, in a case where the turn signal switch 13 is turned on to the left, the switch 36 becomes the left-on state, and electric power is supplied to the left display circuit 32. Likewise, in a case where the turn signal switch 13 is turned on to the right, the switch 36 becomes the right-on state, and electric power is supplied to the right display circuit 33. On the other hand, in a case where the turn signal switch 13 is turned off, the switch 36 becomes the off state.

[0042] The both-side display circuit 34 connects the relay circuit 31 to the left display circuit 32 and the right display circuit 33 bypassing the switch 36. A switch 37 is provided between the both-side display circuit 34 and the relay circuit 31. The switch 37 is driven and controlled in conjunction with the state of the hazard warning switch 14. Specifically, in a case where the hazard warning switch 14 is turned on, the switch 37 becomes on, and electric power is supplied to both the left display circuit 32 and the right display circuit 33. On the other hand, in a case where the hazard warning switch 14 is turned off, the switch 37 becomes off.

[0043] As described above, in the left display circuit 32, the turn signal lamp 11 and the delineator lamp 12 are connected in parallel. Further, a switch 38 is provided on the line in which the delineator lamp 12 is provided. In a case where the switch 38 is on, the delineator lamp 12 and the turn signal lamp 11 are completely synchronized in lighting. The same applies to the right display circuit 33. The switches 38 and 39 are turned off when road delineation is prohibited.

[0044] The ECU 20 controls the switch 36 based on the operation of the turn signal switch 13 and controls the switch 37 based on the operation of the hazard warning switch 14, thereby controlling the blinking or lighting of the turn signal lamp 11.

[0045] In addition to controlling switches 36 and 37, ECU20 also controls switches 38 and 39 based on turn signal switch 13, hazard warning switch 14, steering angle, and vehicle speed, thereby controlling the display of the display light 12.

[0046] The ECU20 has a CPU (Central Processing Unit) as an arithmetic processing unit and storage units such as RAM (Random Access Memory) and ROM (Read Only Memory). It uses the temporary storage function of RAM and performs signal processing according to the program pre-stored in ROM.

[0047] like Figure 2 As shown, the ECU20 is connected to the turn signal switch 13, the hazard warning switch 14, the steering angle sensor 15, the vehicle CAN 16, and the switches 36 to 39 of the display circuit 30. It receives on / off operation signals from the turn signal switch 13 and the hazard warning switch 14, and outputs on / off control signals to the switches 36 to 39 of the display circuit 30.

[0048] The following describes a display example of road surface depiction according to this disclosure. All display modes implemented by the turn signal light 11 and the depiction light 12 will be described using... Figure 4 and Figure 5 This will be described later.

[0049] In addition, please refer to the illustrations for the display examples as appropriate. Figures 6 to 9 . Figure 6 This indicates that turn signal 11 is off and road surface drawing is not performed. Figure 7 The turn signal 11 on the side of the road ahead is flashing, indicating that the road surface is being drawn on the side of the road ahead. Figure 8 This indicates that the turn signals 11 on both sides are flashing and the road surface is not being drawn. Figure 9 This indicates that the turn signal lights 11 on both sides are flashing, indicating the state of the road surface being depicted on the side of the road ahead.

[0050] When the hazard warning switch 14 is turned on, ECU20 prohibits road marking by the marking lights 12 (e.g., Figure 8 (Example shown). Specifically, ECU20 follows... Figure 3 The process shown is as follows.

[0051] like Figure 3 As shown, in step S11, ECU20 moves to step S12 when the turn signal switch 13 is turned on, and moves to step S15 when the turn signal switch 13 is turned off.

[0052] In step S12, the ECU 20 moves to step S13 in the case where the hazard warning switch 14 is turned on, and moves to step S14 in the case where the hazard warning switch 14 is turned off.

[0053] In step S13, the ECU 20 turns on the switch 36 to the forward road side in the display circuit 30, turns on the switch 37 to connect the relay circuit 31 to the both-side display circuit 34, and turns off the switches 38, 39. Thus, the road surface is not traced by the tracing lamp 12, and the both-side turn signal lamps 11 are blinked (refer to FIG. 6). That is, the ECU 20 does not trace the road surface by the tracing lamp 12 in the case where the turn signal switch 13 and the hazard warning switch 14 are turned on at the same time. Figure 8 ). That is, the ECU 20 does not trace the road surface by the tracing lamp 12 in the case where the turn signal switch 13 and the hazard warning switch 14 are turned on at the same time.

[0054] In step S14, the ECU 20 turns on the switch 36 to the forward road side in the display circuit 30 to connect the relay circuit 31 to the forward road side display circuit, turns off the switch 37, and turns on the switch of the forward road side among the switches 38, 39. Thus, the road surface is traced by the forward road side tracing lamp 12, and the forward road side turn signal lamp 11 is blinked (refer to FIG. 7). That is, the ECU 20 traces the road surface by the tracing lamp 12 in the case where the turn signal switch 13 is turned on and the hazard warning switch 14 is turned off. Figure 7 ). That is, the ECU 20 does not trace the road surface by the tracing lamp 12 in the case where the turn signal switch 13 and the hazard warning switch 14 are turned on at the same time.

[0055] In step S15, the ECU 20 moves to step S16 in the case where the hazard warning switch 14 is turned on, and moves to step S11 in the case where the hazard warning switch 14 is turned off.

[0056] In step S16, the ECU 20 turns off the switch 36 in the display circuit 30, turns on the switch 37 to connect the relay circuit 31 to the both-side display circuit 34, and turns off the switches 38, 39. Thus, the road surface is not traced by the tracing lamp 12, and the both-side turn signal lamps 11 are blinked (refer to FIG. 6). That is, the ECU 20 does not trace the road surface by the tracing lamp 12 in the case where the turn signal switch 13 is turned off and the hazard warning switch 14 is turned on. Figure 8 ). That is, the ECU 20 does not trace the road surface by the tracing lamp 12 in the case where the turn signal switch 13 and the hazard warning switch 14 are turned on at the same time.

[0057] Thus, the road surface tracing is prohibited at all times in the case where the hazard warning switch 14 is turned on, and thus the road surface is not traced in conjunction with the turn signal lamp 11, so that the surrounding pedestrians and the like are not confused.

[0058] Next, another embodiment will be described. In the example of FIG. 8, the road surface tracing is prohibited at all times in the case where the hazard warning switch 14 is turned on. However, as in the example of FIG. 9, the road surface tracing is permitted in the case where the hazard warning switch 14 is turned on. Figure 3 Figure 4 Figure 5 ​​As shown, the prohibition on road surface marking can also be lifted under specific conditions. Figure 4 , Figure 5 In the example, when the vehicle 5 is in motion or starting, if the turn signal switch 13 is turned on or a turn is made, road surface mapping is performed even if the hazard warning switch 14 is turned on.

[0059] On the other hand, when the vehicle 5 is stationary and the hazard warning switch 14 is activated, road marking is prohibited. Therefore, when the vehicle 5 is stationary (the vehicle speed transmitted by the in-vehicle CAN 16 is less than the prescribed speed) and the hazard warning switch 14 is activated, the ECU 20 will not perform road marking implemented by the marking lights 12, even if the turn signal switch 13 is activated.

[0060] Specifically, in the display circuit 30, switch 36 is turned on to the forward road side, thereby connecting relay circuit 31 to the forward road side display circuit, switch 37 is turned on, and switches 38 and 39 are turned off. Thus, road surface marking is not performed via the marking lights 12, but the turn signal lights 11 on both sides flash (see reference). Figure 8 (This is the same action as step S33 described later).

[0061] Furthermore, as described above, when the vehicle 5 is in motion or starting (the vehicle speed sent by the in-vehicle CAN 16 is above the prescribed speed), the ECU 20 also removes the prohibition of road surface marking implemented by the marking lights 12 when the turn signal switch 13 is turned on, even if the hazard warning switch 14 is turned on.

[0062] Specifically, in the display circuit 30, switch 36 is turned on to the forward road side, switch 37 is turned on to connect the relay circuit 31 to the display circuits 34 on both sides, and the forward road side switches of switches 38 and 39 are turned on to connect to the road-side marking lights 12. Thus, the road surface is marked by the road-side marking lights 12, and the turn signals 11 on both sides flash (see reference). Figure 9 (This is the same action as step S24 described later).

[0063] In this embodiment, a configuration is used to sense whether the vehicle 5 is in motion or starting based on the vehicle speed transmitted by the in-vehicle CAN16, but it is not limited to this. For example, it is also possible to sense that the vehicle 5 is in motion or starting when the gear lever is in the D position.

[0064] Furthermore, when the vehicle 5 is in motion or starting, even if the hazard warning switch 14 is turned on, the ECU20 will remove the prohibition of road marking implemented by the marking lights 12 if the steering angle detected by the steering angle sensor 15 is above the specified angle.

[0065] Specifically, in display circuit 30, switch 36 is turned off, and switch 37 is turned on, thereby connecting relay circuit 31 to display circuits 34 on both sides. Switches 38 and 39 are turned on to connect the forward road side switch to the forward road side marking light 12. Thus, road surface marking is performed by the forward road side marking light 12, and the turn signal lights 11 on both sides flash (see reference). Figure 9 (This is the same action as step S28 described later).

[0066] Therefore, when the vehicle 5 is in motion or starting, even if the hazard warning switch 14 is turned on, the warning will be lifted when the user changes the direction of travel, thus conveying the meaning of the vehicle 5's direction of travel change to surrounding vehicles.

[0067] "Example Display"

[0068] use Figures 4 to 5 The process displayed by ECU20 will be explained.

[0069] like Figure 4 As shown, in step S21, if the vehicle speed transmitted by the in-vehicle CAN 16 is above a predetermined speed, the ECU 20 considers the vehicle 5 to be in motion or starting and moves to step S22. If the vehicle speed is below the predetermined speed, the ECU 20 considers the vehicle 5 to be stationary and moves to step S31 (see reference). Figure 5 ).

[0070] "While driving or starting"

[0071] In step S22, ECU20 moves to step S23 when the turn signal switch 13 is turned on, and moves to step S26 when the turn signal switch 13 is turned off.

[0072] In step S23, ECU20 moves to step S24 when the hazard warning switch 14 is turned on, and moves to step S25 when the hazard warning switch 14 is turned off.

[0073] In step S24, the ECU20, in the display circuit 30, turns on switch 36 to the forward road side and switch 37 to connect the relay circuit 31 to the display circuits 34 on both sides. It also turns on the forward road side switches 38 and 39 to connect to the road-side marking lights 12. Thus, the road surface is marked by the road-side marking lights 12, and the turn signals 11 on both sides flash (see reference). Figure 9 ).

[0074] In step S25, the ECU20, in the display circuit 30, turns on switch 36 to the forward road side, thereby connecting the relay circuit 31 to the forward road side display circuit, turns off switch 37, and turns on the forward road side switches of switches 38 and 39, thereby connecting to the forward road side marking light 12. Thus, road surface marking is performed by the forward road side marking light 12, causing the forward road side turn signal light 11 to flash (see reference). Figure 7 ).

[0075] In step S26, ECU20 moves to step S27 if the hazard warning switch 14 is turned on, and moves to step S21 if the hazard warning switch 14 is turned off.

[0076] In step S27, if the steering angle detected by the steering angle sensor 15 is above a predetermined angle, the ECU 20 considers the vehicle 5 to be in a turn and moves to step S28. If the steering angle is less than the predetermined angle, the ECU 20 considers the vehicle 5 to be out of a turn and moves to step S29.

[0077] In step S28, the ECU20, in the display circuit 30, disconnects switch 36 and connects switch 37 to connect the relay circuit 31 to the display circuits 34 on both sides, and connects the forward road side switch of switches 38 and 39 to connect the forward road side marking light 12. Thus, the forward road side marking light 12 marks the road surface, causing the turn signal lights 11 on both sides to flash (see reference). Figure 9 ).

[0078] In step S29, the ECU20, in the display circuit 30, disconnects switch 36 and connects switch 37 to connect the relay circuit 31 to the display circuits 34 on both sides, and disconnects switches 38 and 39. Thus, instead of using the road marking lights 12 for road marking, the turn signal lights 11 on both sides flash (see reference). Figure 8 ).

[0079] It should be noted that if step S26 is not successful, the ECU20, in the display circuit 30, disconnects switch 36 and switch 37, thereby disconnecting the relay circuit 31 from the two display circuits 34, and disconnects switches 38 and 39. Therefore, road surface mapping is not performed, and the turn signal light 11 is not illuminated (see reference). Figure 6 ).

[0080] "Currently suspended"

[0081] like Figure 5 As shown, in step S31, ECU20 moves to step S32 when the turn signal switch 13 is turned on, and moves to step S35 when the turn signal switch 13 is turned off.

[0082] In step S32, the ECU 20 moves to step S33 in the case where the danger warning switch 14 is turned on, and moves to step S34 in the case where the danger warning switch 14 is turned off.

[0083] In step S33, the ECU 20 turns on the switch 36 to the forward road side in the display circuit 30, turns on the switch 37 to connect the relay circuit 31 to the both-side display circuit 34, and turns off the switches 38, 39. Thus, the road surface is not traced by the tracing lamp 12, and the both-side turn signal lamps 11 are blinked (refer to Figure 8 ).

[0084] In step S34, the ECU 20 turns on the switch 36 to the forward road side in the display circuit 30 to connect the relay circuit 31 to the forward road side display circuit, turns off the switch 37, and turns on the switch of the forward road side among the switches 38, 39. Thus, the road surface is traced by the forward road side tracing lamp 12, and the forward road side turn signal lamp 11 is blinked (refer to Figure 7 ).

[0085] In step S35, the ECU 20 moves to step S36 in the case where the danger warning switch 14 is turned on, and moves to step S21 in the case where the danger warning switch 14 is turned off.

[0086] In step S36, the ECU 20 turns off the switch 36, turns on the switch 37 to connect the relay circuit 31 to the both-side display circuit 34, and turns off the switches 38, 39 in the display circuit 30. Thus, the road surface is not traced by the tracing lamp 12, and the both-side turn signal lamps 11 are blinked (refer to Figure 8 ).

[0087] Note that, in the case where NO in step S35, the ECU 20 turns off the switch 36, turns off the switch 37 to disconnect the relay circuit 31 from the both-side display circuit 34, and turns off the switches 38, 39 in the display circuit 30. Thus, the road surface is not traced, and in addition, the turn signal lamps 11 are not lighted (refer to Figure 6 ).

[0088] Note that the present disclosure is not limited to the above-described embodiments and modified examples thereof, and various changes and improvements can of course be made within the scope of the matters recited in the claims of the present application.

Claims

1. A display device for a vehicle that, when a user performs a forward path changing operation that is an operation for changing a forward path of the vehicle, irradiates a road surface on a forward path side with light to draw a prescribed shape on the road surface, wherein the drawing on the road surface is prohibited when a hazard warning switch is turned on, the forward path changing operation is a turning signal switch turning-on operation, and the prohibition of the drawing on the road surface is canceled when the turning signal switch is turned on while the vehicle is running or starting.

2. The display device for a vehicle according to claim 1, wherein the drawing on the road surface is not performed even when the forward path changing operation is performed when the vehicle is stopped and the hazard warning switch is turned on. ​ ​ ​ ​

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