Vehicle projection device

Abstract

Task: To provide a vehicle projection device that can properly display an image even when a door is open. Solution: An open / close detection sensor 5 for detecting the open or closed state of doors 3F and 3R of a vehicle C, a side mirror projector 11 for performing a desired first projection display 17 on an outer surface of doors 3F and 3R, and a control unit 7 are provided. The control unit 7 performs a variable projection process to change the display state of the first projection display 17 by the side mirror projector 11 based on the open / close detection sensor 5's detection result.

Description

Technical field

[0001] The present invention relates to a vehicle projection device for displaying a desired display to a viewer outside a vehicle. Technical background

[0002] A conventional example is a display device for a vehicle according to patent document 1. In this display device, a projector is installed in the side mirror of a vehicle and projects an image onto the surface of side display panels of the vehicle. The side display panels include a display panel on a front side door and a display panel on a rear side door. State of the art document (patent document)

[0003] Patent document 1: Japanese patent no. 6373594 Summary of the invention Problem to be solved by the invention

[0004] However, the problem with the conventional display device mentioned above is that proper image display is not possible when the door is open.

[0005] The present invention was designed taking into account the problems mentioned above and aims to provide a vehicle projection device that can properly display an image even when a door is open. Means of solving the task

[0006] The present invention relates to a vehicle projection device 1, which is provided in a vehicle C having doors 3F and 3R which can open and close, wherein the vehicle projection device 1 comprises an opening / closing detection sensor for detecting an opening or closing state of the doors 3F and 3R, a side mirror projector 11 for performing a desired first projection display on an outer surface of the doors 3F and 3R, and a control unit 7, and the control unit 7 performs a variable projection process in order to change a display state of the first projection display by the side mirror projector 11 based on a detection result of the opening or closing state by the opening / closing detection sensor 5. Advantages of the invention

[0007] According to the present invention, it is possible to provide a vehicle projection device that can properly display an image even when a door is open. Brief description of the drawings Fig. Figure 1 is a side view of a vehicle equipped with a vehicle projection device according to a first embodiment, with the doors closed. Fig. Figure 2 is a side view of the vehicle equipped with the vehicle projection device according to the first embodiment, with the rear side door open. Fig. Figure 3 is a functional block diagram showing a functional setup of the vehicle projection device according to the first embodiment. Fig. Figure 4 is a side view of a vehicle where high-priority information is retained in a variable projection process executed by a control unit. Fig. Figure 5 is a side view of a vehicle, showing another example of retaining high-priority information. Fig. Figure 6 is a side view of a vehicle, showing yet another example of retaining high-priority information. Fig. Figure 7 is a side view of a vehicle, showing yet another example of retaining high-priority information. Fig. Figure 8 is a flowchart showing control content when the control unit performs the function shown in Fig. 4 to Fig. The variable projection process shown in section 7 is executed. Fig. Figure 9 is a side view of a vehicle where an image is shifted in a variable projection process performed by the control unit. Fig. 10 is a flowchart showing control content when the control unit performs the function described in Fig. The variable projection process shown in 9 is executed. Fig. Figure 11 is a side view of a vehicle in which a recipient is shown in a variable projection process performed by the control unit. Fig. 12 is a flowchart showing control content when the control unit performs the function shown in Fig. The variable projection process shown in section 11 is executed. Fig. Figure 13 is a side view of a vehicle, showing another example of a recipient being displayed in a variable projection process performed by the control unit. Fig. 14 is a flowchart showing control content when the control unit performs the function shown in Fig. The variable projection process shown in section 13 is executed. Fig. Figure 15 is a side view of a vehicle, in which a carpet is displayed in a variable projection process performed by the control unit. Fig. 16 is a flowchart showing control content when the control unit performs the function shown in Fig. The variable projection process shown in section 15 is executed. Fig. Figure 17 is a side view of a vehicle in which an advertisement is deleted in a variable projection process performed by the control unit. Fig. 18 is a flowchart showing control content when the control unit performs the function shown in Fig. The variable projection process shown in 17 is executed. Fig. Figure 19 is a functional block diagram showing a functional structure of a vehicle projection device according to a second embodiment. Fig. Figure 20 is a side view of a vehicle in which a receiving person is displayed in a variable projection process carried out by the control unit, according to the opening or closing state of the door and the position of a passenger to be transported. Fig. 21 is a flowchart showing control content when the control unit performs the function shown in Fig. The variable projection process shown in Figure 20 is executed. Fig. Figure 22 is a side view of a vehicle in which a projection direction is changed in a variable projection process performed by the control unit according to the opening angle of a revolving door. Fig. Figure 23 is a side view of a vehicle in which a projection display is moved according to the opening or closing state of a door in a variable projection process executed by the control unit. Embodiments of the invention<Erste Ausführungsform>

[0008] A first embodiment of a vehicle projection device according to the present invention is described with reference to Fig. 1 to Fig. 18 described. <Aufbau von Fahrzeug und Fahrzeug-Projektionsvorrichtung>

[0009] The construction of a vehicle and a vehicle projection device according to the first embodiment is described with reference to Fig. 1 to Fig. 3 described. Fig. Figure 1 is a side view of a vehicle C equipped with a vehicle projection device 1 according to the first embodiment, with the doors closed. Fig. Figure 2 is a side view of vehicle C equipped with the vehicle projection device 1 according to the first embodiment, with the rear side door open. Fig. Figure 3 is a functional block diagram showing a functional structure of the vehicle projection device 1 according to the first embodiment.

[0010] As in Fig. 1 and Fig. As shown in Figure 2, the vehicle projection device 1 is provided in vehicle C, which has doors 3F and 3R that can open and close. As shown in Fig. As shown in Figure 3, the vehicle projection device 1 comprises an opening / closing detection sensor 5 (opening / closing detection unit) for detecting an opening or closing state of the doors 3F and 3R, a control unit 7, a projection image generation unit 9, a side mirror projector 11 (first projection unit) and an interior projector 13 (second projection unit).

[0011] As in Fig. 1 and Fig. As shown in Figure 2, vehicle C has door 3F (second door) on the front of the left side panel (one side in the width direction) and door 3R (first door) on the rear of the left side panel. Hereafter, door 3F will appropriately be referred to as "front side door 3F" and door 3R as "rear side door 3R". The front side door 3F is a hinged door that opens and closes by pivoting around a predetermined axis. The rear side door 3R is a sliding door that opens and closes by sliding along the side panel of vehicle C. It should be noted that the rear side door 3R may also be a hinged door. Furthermore, the number of doors on a single side panel of vehicle C is not limited to two, but may be one, three, or more. It should be noted that vehicle C also has doors similar to doors 3F and 3R on the right side panel.

[0012] The side mirror projector 11 is located inside or outside a left side mirror 15 of the vehicle C and performs a first projection display on the doors 3F and 3R, which constitute a projection target and are located behind the side mirror projector 11. Specifically, the side mirror projector 11 performs a first projection display by illuminating a first area R1 on an outer surface of the doors 3F and 3R of the vehicle C with a first illumination light L1, which represents a predetermined image. In the present embodiment, the predetermined image is, for example, an advertising image. However, the predetermined image can also be an image other than an advertising image. The first area R1 can be an area that extends over both doors 3F and 3R, or an area that fits into one of the doors 3F and 3R.The side mirror projector 11 can be provided only on the left side mirror 15 of vehicle C or on both the left and a right side mirror of vehicle C.

[0013] As in Fig. As shown in Figure 2, the interior projector 13 is provided in the vehicle C and, when the rear side door 3R is open, performs a second projection display by shining a second illumination light L2, which represents a predefined image, onto a second area R2 of the road surface. This area serves as an entry and exit route for a passenger entering and exiting the vehicle C through the rear side door 3R. In the present embodiment, the predefined image is, for example, an image (such as an image of a carpet) that guides the passenger along the entry and exit route. However, other images (such as an advertising image, etc.) can also be used. The interior projector 13 is, for example, mounted on the left side of the roof of the vehicle C.It should be noted that the interior projector 13 can be provided only on the left side of the roof of vehicle C or on both the left and right sides of the roof.

[0014] As in Fig. As shown in Figure 3, the open / close detection sensor 5 detects the open or closed state of doors 3F and 3R. The open or closed state includes not only whether doors 3F and 3R are in an open or closed position, but also the position of an open door (a sliding position for a sliding door, a rotation angle for a revolving door, and so on). The open / close detection sensor 5 can be, for example, an imaging sensor such as a camera, a non-contact sensor such as a magnetic, optical, or ultrasonic sensor, or a mechanical sensor such as a limit switch or a microswitch.

[0015] The control unit 7 executes a variable projection process to change the display state of the first projection by the side mirror projector 11, based on the open / close detection status of doors 3F and 3R as determined by the open / close detection sensor 5. Furthermore, the control unit 7 controls the execution of the second projection by the interior projector 13 in conjunction with the control of the side mirror projector 11 via the variable projection process. The control unit 7 executes the variable projection process when doors 3F and 3R are opened from a closed state or when doors 3F and 3R are closed from an open state. The variable projection process is described in detail later.

[0016] The projection image generation unit 9, under the control of the control unit 7, generates an image that is projected from the side mirror projector 11 onto the first area R1, and an image that is projected from the interior projector 13 onto the second area R2. <Spezifische Beispiele für variablen Projektionsprozess>

[0017] Next, with reference to Fig. 4 to Fig. 18 specific examples of the variable projection process performed by control unit 7 are described. <Belassen von Informationen mit hoher Priorität>

[0018] In a variable projection process, control unit 7 changes the projection area according to the open position of doors 3F and 3R, which represent the projection target, thereby changing the display state of the first projection display on doors 3F and 3R. In this case, if the display information shown on doors 3F and 3R consists of a large number of display information pieces, each with a different display priority, control unit 7 can make the display information disappear sequentially in order of lowest priority or appear sequentially in order of highest priority. In the Fig. The example shown in Figure 4 comprises a first projection display 17, shown in the first area R1, which extends across doors 3F and 3R, and includes a variety of display information pieces, each with a different display priority. For example, the first projection display 17 includes text information 17a, which specifies a product name, service designation, or the like, and background information 17b, which includes a variety of people. The text information 17a is display information with a higher priority than the background information 17b. In the example shown in Figure 4, the first projection display 17 includes text information 17a, which specifies a product name, service designation, or the like, and background information 17b, which includes a variety of people. The text information 17a is display information with a higher priority than the background information 17b. Fig. In the example shown in Figure 4, when the rear side door 3R is opened, the control unit 7 deletes both end sections of the low-priority background information 17b that do not contain any text information 17a, in order to leave the high-priority text information 17a on the front side door 3F.

[0019] Fig. Figure 5 shows another example of the first projection display, which contains a variety of display information pieces with different priorities. In the Fig. In the example shown in Figure 5, a first projection display 19 includes, for example, text information 19a, which specifies a product name, service designation, or the like, and text information 19b, which specifies a company name. The text information 19a is higher priority than the text information 19b. In this case, when the rear side door 3R is opened, the control unit 7 causes the lower priority text information 19b to disappear in a variable projection process. In other words, the control unit 7 causes only the high priority text information 19a to appear on the front side door 3F.

[0020] Fig. Figure 6 shows another example of a first projection display, which contains a large number of display information pieces with different priorities. In the one shown in Fig. The example shown contains a first projection display 21, text information 21a, which shows the date and start time of an event (in the example in Fig. 6 (the release of a new song), as well as a portrait image 21b of an organizer of the event. The text information 21a is display information with a higher priority than the portrait image 21b. In this case, when the rear side door 3R is opened, the control unit 7 causes the low-priority portrait image 21b to disappear in a variable projection process. In other words, the control unit 7 causes only the high-priority text information 21a to appear on the front side door 3F.

[0021] Fig. Figure 7 shows another example of a first projection display, which contains a large number of display information pieces with different priorities. In the one shown in Fig. The example shown contains a first projection display, 23 text information (23a) indicating the title of a film, 23b indicating the date and time of the film's theatrical release, and 23c indicating the name of the film series (the name of an anime in the example of). Fig. 7) and background information 23d, which includes the people appearing in the film. Text information 23a has the highest priority, text information 23b has the second-highest priority, text information 23c has the third-highest priority, and background information 23d is the display information with the lowest priority. In this case, when the rear side door 3R is opened, control unit 7 causes a portion of both sides of background information 23d, text information 23c, and text information 23b to disappear sequentially in order of lowest priority in a variable projection process. In other words, control unit 7 causes only the highest-priority text information 23a and the background information 23d in its vicinity to appear on the front side door 3F.

[0022] Fig. 8 is a flowchart showing control content when the control unit 7 performs the function described in Fig. 4 to Fig. The variable projection process shown in Figure 7 is executed. As in Fig. As shown in Figure 8, the control unit 7 causes the side mirror projector 11 to illuminate the first area R1 of the outer surface of doors 3F and 3R of vehicle C in order to display an advertising image on doors 3F and 3R (S10).

[0023] Next, based on the detection result from the open / close detection sensor 5, the control unit 7 determines whether the rear side door 3R has started to open (S20). The control unit 7 repeats S20 until the rear side door 3R starts to open. When the control unit 7 detects that the rear side door 3R has started to open, it detects the position and priority of the respective information contained in the advertising image (S30). The control unit 7 then restores the advertising image so that high-priority information can be displayed and projects the restored advertising image onto the front side door 3F (S40) (variable projection process).

[0024] Next, based on the detection result from the open / close detection sensor 5, the control unit 7 determines whether the rear side door 3R is fully closed (S50). The control unit 7 repeats S50 until the rear side door 3R is fully closed. When the control unit 7 determines that the rear side door 3R is fully closed, the control unit 7 resets the displayed image to the original advertising image and displays the original advertising image on doors 3F and 3R (S60) (variable projection process).

[0025] Next, control unit 7 determines whether a stop command to end the display of the advertising image has been received (S70). For example, control unit 7 recognizes that a stop command has been received if the driver switches off a switch for the advertising display or turns off the engine. If control unit 7 does not receive a stop command to end the display of the advertising image, the process returns to S20. However, if control unit 7 does receive a stop command to end the display of the advertising image, the process ends. <Verschieben eines Bildes>

[0026] In a variable projection process, control unit 7 changes the projection area according to the sliding position of doors 3F and 3R, which represent the projection target, thereby changing the display state of the first projection display on doors 3F and 3R. At this point, in the variable projection process, control unit 7 can make the first area R1 of the first projection display on the rear side door 3R disappear according to the open or closed state of the rear side door 3R, and in response to the disappearance of the first area R1 from the rear side door 3R, shift the display content of the first projection display on the front side door 3F within the display area of ​​the front side door 3F to show the display content of the rear side door 3R. In the Fig. The example shown in 9 is similar to the one above. Fig. As described in section 4, the first projection display 17 is shown in the first area R1, which extends across doors 3F and 3R. When the rear side door 3R is opened, the control unit 7 causes the first area R1 of the first projection display 17 to disappear from the rear side door 3R, leaving only the first area R1 of the front side door 3F. This makes the first area R1 narrower, and the display content of the rear side door 3R is no longer shown. In this case, the control unit 7 moves the first projection display 17, which is already displayed in the first area R1 on the front side door 3F, forward, thus displaying the content from the rear side door 3R. That is, the first projection display 17 on the front side door 3F is moved forward by means of an animation (moving image).

[0027] Fig. 10 is a flowchart showing control content when control unit 7 is in Fig. The variable projection process shown in section 9 is executed. As in Fig. As shown in Figure 10, the control unit 7 causes the side mirror projector 11 to illuminate the first area R1 of the outer surface of doors 3F and 3R of vehicle C in order to display an advertising image on doors 3F and 3R (S110).

[0028] Next, based on the detection result from the open / close sensor 5, the control unit 7 determines whether the rear side door 3R has started to open (S120). The control unit 7 repeats S120 until the rear side door 3R starts to open. When the control unit 7 detects that the rear side door 3R has started to open, it displays the advertising image only on the front side door 3F and shifts the advertising image to display the entire image (S130) (variable projection process). The image shift can be performed all at once, in a preset number of operations, or continuously and repeatedly.

[0029] Next, based on the detection result from the open / close detection sensor 5, the control unit 7 determines whether the rear side door 3R is fully closed (S140). The control unit 7 repeats S140 until the rear side door 3R is fully closed. When the control unit 7 determines that the rear side door 3R is fully closed, the control unit 7 resets the displayed image to the original advertising image and displays the original advertising image on doors 3F and 3R (S150) (variable projection process).

[0030] Next, control unit 7 checks whether a stop command to end the display of the advertisement has been received (S160). If control unit 7 does not receive a stop command to end the display of the advertisement, the process returns to S120. However, if control unit 7 does receive a stop command to end the display of the advertisement, the process ends. <Anzeige von Empfangsperson>

[0031] In a variable projection process, control unit 7 can replace the image of the first projection display, shown on doors 3F and 3R, with a different image according to the open or closed state of doors 3F and 3R, which represent the projection target. In the Fig. The example shown in 11 is similar to the one above. Fig. As described in section 4, the first projection display 17 is shown in the first area R1, which extends across doors 3F and 3R. When the rear side door 3R is opened, the control unit 7 switches the first projection display 17 to a first projection display 25, which is a different image. The first projection display 25 includes, for example, a text image 25a with the word "Welcome," which is displayed on the front side door 3F, and an image 25b of a receptionist and a text image 25c with the word "Open," which are displayed on the rear side door 3R. When the rear side door 3R moves backward and the text image 25c with the word "Open" is outside a projectable area, the control unit 7 stops displaying the text image 25c and shows only the image 25b of the receptionist.

[0032] Fig. 12 is a flowchart showing control content when control unit 7 is in Fig. The variable projection process shown in section 11 is executed. As in Fig. As shown in Figure 12, the control unit 7 causes the side mirror projector 11 to illuminate the first area R1 of the outer surface of doors 3F and 3R of vehicle C in order to display an advertising image on doors 3F and 3R (S210).

[0033] Next, based on the detection result from the open / close detection sensor 5, the control unit 7 determines whether the rear side door 3R has started to open (S220). The control unit 7 repeats S220 until the rear side door 3R starts to open. When the control unit 7 detects that the rear side door 3R has started to open, it changes the advertising image to one containing the word "Welcome," an image of a receptionist, and the word "Open," and displays the word "Welcome" on the front side door 3F and the image of the receptionist and the word "Open" on the rear side door 3R (S230) (variable projection process).

[0034] Next, based on the detection result from the open / close sensor 5, the control unit 7 determines whether the word "Open" is outside the projected area due to the backward movement of the rear side door 3R (S240). The control unit 7 repeats S240 until the word "Open" is outside the projected area. When the word "Open" is outside the projected area, the control unit 7 stops displaying the word "Open" on the rear side door 3R and displays only the image of the receptionist (S250).

[0035] Next, based on the detection result from the open / close detection sensor 5, the control unit 7 determines whether the rear side door 3R is fully closed (S260). The control unit 7 repeats S260 until the rear side door 3R is fully closed. When the control unit 7 determines that the rear side door 3R is fully closed, the control unit 7 resets the displayed image to the original advertising image and displays the original advertising image on doors 3F and 3R (S270) (variable projection process).

[0036] Next, control unit 7 checks whether a stop command to end the display of the advertisement has been received (S280). If control unit 7 does not receive a stop command to end the display of the advertisement, the process returns to S220. However, if control unit 7 does receive a stop command to end the display of the advertisement, the process ends.

[0037] Fig. Figure 13 shows another example, in which a receptionist is displayed. In the case of the Fig. In the example shown in Figure 13, when the rear side door 3R is opened, the control unit 7 switches the first projection display 17 to a first projection display 27, which shows a different image. The first projection display 27 includes, for example, an image 27a of a receptionist, displayed on the front side door 3F, and a text image 27b with the word "Open," displayed on the rear side door 3R. When the rear side door 3R moves backward and the text image 27b with the word "Open" is outside the projectable area, the control unit 7 stops displaying the text image 27b.

[0038] Fig. 14 is a flowchart showing control content when control unit 7 is in Fig. The variable projection process shown in section 13 is executed. As in Fig. As shown in Figure 14, the control unit 7 causes the side mirror projector 11 to illuminate the first area R1 of the outer surface of doors 3F and 3R of vehicle C in order to display an advertising image on doors 3F and 3R (S310).

[0039] Next, based on the detection result from the open / close detection sensor 5, the control unit 7 determines whether the rear side door 3R has started to open (S320). The control unit 7 repeats S320 until the rear side door 3R starts to open. When the control unit 7 detects that the rear side door 3R has started to open, it changes the advertising image to one containing the image of a receptionist and the word "Open" and displays the image of the receptionist on the front side door 3F and the word "Open" on the rear side door 3R (S330) (variable projection process).

[0040] Next, based on the detection result from the open / close sensor 5, the control unit 7 determines whether the word "Open" is outside the projected area due to the backward movement of the rear side door 3R (S340). The control unit 7 repeats S340 until the word "Open" is outside the projected area. When the word "Open" is outside the projected area, the control unit 7 stops displaying the word "Open" on the rear side door 3R and displays only the image of the receptionist (S350).

[0041] Next, based on the detection result from the open / close sensor 5, the control unit 7 determines whether the rear side door 3R is fully closed (S360). The control unit 7 repeats S360 until the rear side door 3R is fully closed. When the control unit 7 determines that the rear side door 3R is fully closed, it resets the displayed image to the original advertising image and displays the original advertising image on doors 3F and 3R (S370) (variable projection process).

[0042] Next, control unit 7 checks whether a stop command to end the display of the advertisement has been received (S380). If control unit 7 does not receive a stop command to end the display of the advertisement, the process returns to S320. However, if control unit 7 does receive a stop command to end the display of the advertisement, the process ends. <Anzeige von Teppich>

[0043] The control unit 7 can, in a variable projection process, replace the image of the first projection display shown on doors 3F and 3R with another image, according to the open or closed state of doors 3F and 3R, which represent the projection target. Furthermore, the control unit 7 can control the interior projector 13 in conjunction with the control of the side mirror projector 11 via the variable projection process to generate a desired second projection display on a road surface. In the Fig. The example shown in 15 is similar to the one above. Fig. As described in section 4, the first projection display 17 is shown in the first area R1, which extends across doors 3F and 3R. When the rear side door 3R is opened, the control unit 7 switches the first projection display 17 to a first projection display 29, which is a different image. The first projection display 29 includes, for example, an image 29a of a receptionist, which is displayed on the front side door 3F. In addition, the control unit 7 controls the interior projector 13 to perform a second projection display 31 on a road surface, which serves as an entry / exit route for a passenger entering or exiting the vehicle C through the rear side door 3R when the rear side door 3R is open. The second projection display 31 is, for example, an image of a carpet laid on a staircase.

[0044] Fig. 16 is a flowchart showing control content when control unit 7 is in Fig. The variable projection process shown in section 15 is executed. As in Fig. As shown in Figure 16, the control unit 7 causes the side mirror projector 11 to illuminate the first area R1 of the outer surface of doors 3F and 3R of vehicle C in order to display an advertising image on doors 3F and 3R (S410).

[0045] Next, based on the detection result from the open / close sensor 5, the control unit 7 determines whether the rear side door 3R has begun to open (S420). The control unit 7 repeats S420 until the rear side door 3R begins to open. When the control unit 7 detects that the rear side door 3R has begun to open, it changes the advertising image to an image of a receptionist and displays the image of the receptionist on the front side door 3F (S430) (variable projection process). Next, the control unit 7 causes the interior projector 13 to illuminate the second area R2 of the road surface, which serves as the entry and exit route into and out of vehicle C, to display an image of a carpet (S440).

[0046] Next, based on the detection result from the open / close sensor 5, the control unit 7 determines whether the rear side door 3R is fully closed (S450). The control unit 7 repeats S450 until the rear side door 3R is fully closed. When the control unit 7 determines that the rear side door 3R is fully closed, it stops the carpet image being displayed by the interior projector 13 (S460). The control unit 7 also resets the image of the receptionist displayed on the front side door 3F to the original advertising image and displays the original advertising image on doors 3F and 3R (S470) (variable projection process).

[0047] Next, control unit 7 checks whether a stop command to end the display of the advertisement has been received (S480). If control unit 7 does not receive a stop command to end the display of the advertisement, the process returns to S420. However, if control unit 7 does receive a stop command to end the display of the advertisement, the process ends. <Löschen von Werbeanzeige>

[0048] Control unit 7 can, in a variable projection process, make an initial projection display, shown on doors 3F and 3R, disappear according to the open or closed state of doors 3F and 3R, which represent the projection target. In the Fig. The example shown in 17 is similar to the one above. Fig. As described in section 4, the first projection display 17 is shown in the first area R1, which extends across doors 3F and 3R. When the rear side door 3R is opened, the control unit 7 ends the first projection display 17. It should be noted that the control unit 7 can also end the first projection display 17 in a similar way when the front side door 3F is opened.

[0049] Fig. 18 is a flowchart showing control content when control unit 7 is in Fig. The variable projection process shown in section 17 is executed. As in Fig. As shown in Figure 18, the control unit 7 causes the side mirror projector 11 to illuminate the first area R1 of the outer surface of doors 3F and 3R of vehicle C in order to display an advertising image on doors 3F and 3R (S510).

[0050] Next, based on the detection result from the open / close sensor 5, the control unit 7 determines whether the rear side door 3R has started to open (S520). The control unit 7 repeats S520 until the rear side door 3R starts to open. When the control unit 7 detects that the rear side door 3R has started to open, the control unit 7 stops displaying the advertising image on doors 3F and 3R (S530) (variable projection process).

[0051] Next, based on the detection result from the open / close detection sensor 5, the control unit 7 determines whether the rear side door 3R is fully closed (S540). The control unit 7 repeats S540 until the rear side door 3R is fully closed. When the control unit 7 determines that the rear side door 3R is fully closed, the control unit 7 displays the original advertising image on doors 3F and 3R (S550) (variable projection process).

[0052] Next, control unit 7 checks whether a stop command to end the display of the advertisement has been received (S560). If control unit 7 does not receive a stop command to end the display of the advertisement, the process returns to S520. However, if control unit 7 does receive a stop command to end the display of the advertisement, the process ends. <Wirkung der ersten Ausführungsform>

[0053] As described above, the control unit 7 in the vehicle projection device 1, according to the first embodiment, detects the open or closed state of doors 3F and 3R and changes the projection display of the side mirror projector 11 accordingly. This allows projection information to be displayed in such a way that an observer outside the vehicle C can see the projection information correctly, even if the rear side door 3R is open. Furthermore, it avoids a display that is not clearly visible to the observer (e.g., a display in which important information is missing).

[0054] In addition, the control unit 7 can, if necessary, change the projection area of ​​the side mirror projector 11 according to the position of the rear side door 3R when opening by sliding the rear side door 3R, thus enabling advertising information to be displayed in such a way that it is correctly visible to the viewer.

[0055] Furthermore, control unit 7 can switch off the projection display if necessary when doors 3F and 3R are open. This prevents a meaningless and unnecessary display from being shown, which cannot be properly seen by an observer outside vehicle C.

[0056] When the rear side door 3R is opened and the control unit 7 makes the projection display on the rear side door 3R disappear, the control unit 7 also shifts the already displayed image within the display area of ​​the front side door 3F, if necessary, so that the display content of the rear side door 3R is shown on the front side door 3F. This allows a display state to be achieved in which the projection display on the front side door 3F is moved by means of animation (moving image). Consequently, advertising information can be displayed in such a way that a viewer outside the vehicle C can see the advertising information correctly, even if the rear side door 3R is open.

[0057] Furthermore, if the display information shown on doors 3F and 3R contains a large number of information items, each with a different display priority, control unit 7 can make the information disappear sequentially in order of lowest priority or appear sequentially in order of highest priority, as needed. This makes it possible to keep important information visible to the viewer until the very end, thus preventing a loss of advertising effectiveness.

[0058] Furthermore, control unit 7 can, if necessary, replace the image displayed on the projection screen with a different image, thus enabling a more practical projection display. For example, when the door of a taxi or similar vehicle opens to allow a passenger to board, the passenger may be surprised by the sudden opening. By replacing the image with one that informs the passenger that the door is opening (e.g., the word "Welcome," a picture of a receptionist, or the word "Open"), the passenger can be prevented from being surprised, and the service can be improved.

[0059] Furthermore, when the rear side door 3R is open, the control unit 7 can provide the passenger with various presentations and display services as required, by causing the interior projector 13 to project a second projection display 31 from inside the vehicle through the open rear side door 3R onto the road surface, which serves as an entry and exit route in front of the door.

[0060] Furthermore, the control unit 7 can, if required, execute a variable projection process triggered by the opening or closing of the rear side door 3R, thereby displaying the projection information in such a way that it can be correctly seen by a viewer outside the vehicle C, regardless of the opening or closing state of the rear side door 3R.

[0061] Furthermore, the control unit 7 can, if required, project from the side mirror projector 11 attached to the side mirror 15 towards the doors 3F and 3R behind it, thus enabling a uniform projection display on the doors 3F and 3R without affecting the appearance of the vehicle C and without blocking the irradiation light. <Zweite Ausführungsform>

[0062] A second embodiment of a vehicle projection device according to the present invention is described with reference to Fig. 19 to Fig. 21 described. <Funktioneller Aufbau von Fahrzeug-Projektionsvorrichtung>

[0063] The functional design of a vehicle projection device according to the second embodiment is described with reference to Fig. 19 described. Fig. Figure 19 is a functional block diagram showing a functional setup of the vehicle projection device 1 according to the second embodiment. It should be noted that in Fig. 19 similar components as in Fig. 3 items are labelled with the same reference symbols and their descriptions are omitted.

[0064] As in Fig. As shown in Figure 19, the vehicle projection device 1 according to the second embodiment comprises, in addition to the previously mentioned open / close detection sensor 5, the control unit 7, the projection image generation unit 9, the side mirror projector 11, and the interior projector 13, a camera 33 (position detection unit). The camera 33 detects the position of a passenger to be transported in the vehicle C who is located outside the vehicle C. The camera 33 is, for example, a vehicle-mountable camera that is installed inside the vehicle C and can capture images in a 360-degree range. In the second embodiment, a variable projection process executed by the control unit 7 is based on the detection result of the open or closed state of the doors 3F and 3R by the open / close detection sensor 5 and the detection result of the position of a passenger to be transported by the camera 33. <Spezifisches Beispiel für variablen Projektionsprozess>

[0065] Next, with reference to Fig. 20 and Fig. 21 describes a specific example of the variable projection process performed by the control unit 7.

[0066] As in Fig. As shown in Figure 20, the rear side door 3R of vehicle C in the second embodiment is a revolving door that opens and closes by pivoting about a predetermined axis. In the Fig. The example shown in 20 is similar to the one above. Fig. As described in section 4, the first projection display 17 is shown in the first area R1, which extends over doors 3F and 3R. When the rear side door 3R is opened by turning, and the position of a passenger M to be transported, as detected by camera 33, corresponds to a position where the outer surface of the rear side door 3R is visible, the control unit 7 switches a portion of the area of ​​the first projection display 17 located on the rear side door 3R to a first projection display 35, which is a different image. The first projection display 35 is, for example, an image of a receptionist.If the position of the passenger M being transported, as detected by camera 33, corresponds to a position where the outer surface of the rear side door 3R is not visible, the control unit 7 switches the first projection display 35 on the rear side door 3R back to the original first projection display 17 and displays the original advertising image on doors 3F and 3R. It should be noted that a position where the outer surface of the rear side door 3R is visible, when viewed vertically from above, is, for example, a position in front of the rear side door 3R or in front of an extension line of the rear side door 3R. Furthermore, a position where the outer surface of the rear side door 3R is not visible, when viewed vertically from above, is, for example, a position behind the rear side door 3R or behind an extension line of the rear side door 3R.

[0067] Fig. 21 is a flowchart showing control content when control unit 7 is in Fig. The variable projection process shown in 20 is executed. As in Fig. As shown in Figure 21, the control unit 7 causes the side mirror projector 11 to illuminate the first area R1 of the outer surface of doors 3F and 3R of vehicle C in order to display an advertising image on doors 3F and 3R (S610).

[0068] Next, based on the detection result from the open / close detection sensor 5, the control unit 7 determines whether the rear side door 3R has begun to open (S620). The control unit 7 repeats S620 until the rear side door 3R begins to open. If the control unit 7 determines that the rear side door 3R has begun to open, it determines whether the position of the passenger M to be transported, as detected by the camera 33, corresponds to a position where the outer surface of the rear side door 3R is visible (S630). If the control unit 7 determines that the position of the passenger M to be transported corresponds to a position where the outer surface of the rear side door 3R is visible, the control unit 7 changes the image of part of the advertising image on the rear side door 3R to the image of a receptionist (S640) (variable projection process). After that, the process returns to S630.

[0069] If, however, in S630 the control unit 7 determines that the position of the passenger M to be transported corresponds to a position where the outer surface of the rear side door 3R is not visible, the control unit 7 resets the image of the receiving person displayed on the rear side door 3R to the original advertising image in order to display the original advertising image on doors 3F and 3R (S650) (variable projection process).

[0070] Next, control unit 7 checks whether a stop command to end the display of the advertisement has been received (S660). If control unit 7 does not receive a stop command to end the display of the advertisement, the process returns to S620. However, if control unit 7 does receive a stop command to end the display of the advertisement, the process ends. <Wirkung der zweiten Ausführungsform>

[0071] As described above, according to the second embodiment, the control unit 7 in the vehicle projection device 1 performs the variable projection process not only based on the open / closed state of the rear side door 3R, but also based on the position of the passenger M to be transported in the vehicle C. This makes it possible to provide a more detailed display service. <modifikationen>

[0072] The present invention is not limited to the first and second embodiments described above, and various modifications are possible without deviating from the essential content and technical concept of the present invention. Such modifications are described sequentially below. The same or similar components as in the first and second embodiments are designated with the same reference numerals, and their description is omitted or simplified as appropriate.

[0073] At the in Fig. In the modification shown in Figure 22, the rear side door 3R of vehicle C is a revolving door that opens and closes by pivoting around a predetermined axis. In the [document / model] Fig. The example shown in 22 is similar to the one above. Fig. As described in section 4, the first projection display 17 is shown in the first area R1, which extends across doors 3F and 3R. In the present modification, when the rear side door 3R is opened by rotating, the control unit 7 changes the display state of the first projection display 17 on the rear side door 3R in a variable projection process. The control unit 7 changes the projection direction of a portion of the first projection display 17 on the rear side door 3R according to the opening angle of the rear side door 3R, which is the projection target. In this way, projection information can be displayed so that an observer outside the vehicle C can see the projection information correctly, even if the opened door is a revolving door.It should be noted that when the front side door 3F is pivoted and opened, the display state of the first projection display 17 on the front side door 3F can also be changed by changing the projection direction in a similar way according to the opening angle of the front side door 3F, which represents the projection target.

[0074] At the in Fig. In the modification shown in Figure 23, the rear side door 3R of vehicle C is a sliding door that opens and closes by sliding along the side surface of vehicle C. In the [document / model] shown in Fig. The example shown in 23 is similar to the one above. Fig. As described in section 4, the first projection display 17 is shown in the first area R1, which extends across doors 3F and 3R. It should be noted that in the present modification, the size of the first area R1 is smaller in a front-to-back direction than in the one described above. Fig. 4. In the present modification, the control unit 7, in a variable projection process, reduces or deletes a display area of ​​the first projection display 17 on the rear side door 3R when the rear side door 3R is opened by sliding, according to the opening or closing state of the rear side door 3R. Furthermore, in response to the reduction or deletion of the display area, the first projection display 17 on the front side door 3F reappears or expands a display area of ​​the already displayed first projection display 17 on the front side door 3F. This allows, as described in Fig. Figure 23 shows that the first projection display 17, spanning doors 3F and 3R, is moved to the front side door 3F. In this way, projection information can be displayed so that an observer outside vehicle C can see the projection information correctly, even if the rear side door 3R is open. It should be noted that in the Fig. In the example shown in Figure 23, the size of the first projection display 17 did not change when moved. However, the size of the first projection display 17 can be increased or decreased when moved to fit the display area of ​​the front side door 3F.

[0075] The description above explains an example in which the rear side door 3R opens. However, a similar variable projection process can also be performed when the front side door 3F opens. In the description above, the side mirror projector 11 was used. However, the projector (first projection unit) can also be located at a different protruding point on the vehicle C than the side mirror. Furthermore, in the description above, the side mirror projector 11 illuminates the first area R1 of the outer surface of the doors 3F and 3R of the vehicle C with the first illumination light L1, which represents a predetermined image, to perform a first projection display. However, a display (first image display unit), such as a thin-film transistor (TFT), can also be used to perform a first image display, which represents a predetermined image in the first area R1.

[0076] Furthermore, the techniques according to the above embodiments and respective modifications can be combined and used in addition to the content described above.

[0077] Although not mentioned in detail, the present invention can be modified and implemented in various ways without deviating from the essential content of the present invention. Reference symbol list 1 Vehicle projection device 3F Front side door 3R Rear side door 5 Opening / closing detection sensor (opening / closing detection unit) 7 Control unit 9 Projection image generation unit 11 Side mirror projector (First projection unit) 13 Indoor projector (Second projection unit) 15 side mirrors 17 First projection display 17a Text information 17b Background information 19 First projection display 19a Text information 19b Text information 21 First projection display 21a Text information 21b Portrait image 23 First projection display 23a Text information 23b Text information 23c Text information 23d Background Information 25 First projection display 25a Text image 25b Image of receptionist 25c Text image 27 First projection display 27a Image of receptionist 27b Text image 29 First projection display 29a Image of receptionist 31 Second projection display 33 Camera 35 First projection display C vehicle L1 First irradiation light L2 Second irradiation light M Passenger to be transported R1 First Area R2 Second Area QUOTES INCLUDED IN THE DESCRIPTION

[0000] This list of documents cited by the applicant was automatically generated and is included solely for the reader's convenience. The list is not part of the German patent or utility model application. The DPMA accepts no liability for any errors or omissions. Cited patent literature

[0000] JP 6373594

[0003] < / modifikationen>

Claims

[1] Vehicle projection device provided in a vehicle which has a door which can open and close, wherein the vehicle projection device an opening / closing detection unit for detecting the open or closed state of the door; a first projection unit that performs a desired first projection display on an outer surface of the door; and a control unit characterized by that the control unit executes a variable projection process to change the display state of the first projection display by the first projection unit based on a detection result of the opening or closing state by the opening / closing detection unit. [2] Vehicle projection device according to claim 1, characterized by , that the door opens and closes by sliding along a side surface of the vehicle, and the control unit in the variable projection process a projection area changes according to a sliding position of the door, which represents a projection target, and thus changes a display state of the first projection display on the door. [3] Vehicle projection device according to claim 1, characterized by , that the door opens and closes by pivoting around a predetermined axis, and the control unit in the variable projection process a projection direction changes according to an opening angle of the door, which represents a projection target, and thus changes a display state of the first projection display on the door. [4] Vehicle projection device according to claim 1, characterized by , that the control unit in the variable projection process The first projection display shown on the door disappears according to the opening or closing status of the door, which represents a projection target. [5] Vehicle projection device according to claim 1, characterized by , that in the vehicle the door has a multitude of doors, including a first door and a second door on one side in the width direction, and In the variable projection process, the control unit reduces or disappears a display area of ​​the first projection display on the first door according to the opening or closing state of the first door, and also, in response to the reduction or disappearance of the display area, makes the first projection display on the second door reappear or expands a display area of ​​the first projection display that is already displayed. [6] Vehicle projection device according to claim 1, characterized by , that in the vehicle the door has a multitude of doors, including a first door and a second door on one side in the width direction, and In the variable projection process, the control unit makes a display area of ​​the first projection display on the first door disappear according to the opening or closing state of the first door, and also, in response to the disappearance of the display area, shifts a display content of the first projection display on the second door into a display area of ​​the second door in order to display the display content on the first door. [7] Vehicle projection device according to claim 1, characterized by , that the first projection display contains a variety of display information pieces with different display priorities, and the control unit in the variable projection process The system makes the multitude of display information pieces shown on the door, which represents a projection target, disappear in a sequence of lowest priority or appear in a sequence of highest priority, according to the opening or closing state of the door. [8] Vehicle projection device according to claim 1, characterized by , that the control unit in the variable projection process An image of the first projection display, which is shown on the door, is replaced by another image according to the opening or closing state of the door, which represents a projection target. [9] Vehicle projection device according to claim 1, further comprising: a second projection unit, provided inside the vehicle, which performs a desired second projection display on a road surface, serving as an entry / exit route for a passenger who, when the door is open, enters or exits the vehicle through the door, characterized by , that The control unit controls the execution of the second projection display by the second projection unit in conjunction with the control of the first projection unit by the variable projection process. [10] Vehicle projection device according to claim 1, characterized by , that the control unit The variable projection process is executed when the door is opened from a closed state or when the door is closed from an open state. [11] Vehicle projection device according to any one of claims 1 to 8, further comprising: a position detection unit for detecting the position of a passenger being transported in the vehicle who is outside the vehicle, characterized by , that the control unit The variable projection process is based on a detection result of the opening or closing state by the opening / closing detection unit and a detection result of a position of the passenger to be transported by the position detection unit. [12] Vehicle projection device according to claim 1, characterized by , that the first projection unit is provided in a side mirror of the vehicle and executes the first projection display on the door, which represents a projection target and is located behind the first projection unit.

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