Display device for vehicle

Abstract

To provide a display device for a vehicle, which leaves a child with a quiet mind by displaying a baby mobile image M having a function similar to bed mobiles within a cabin, when the small child gets into the vehicle.SOLUTION: A display device 1 for a vehicle, which is provided in the vehicle C with a seat, comprises a projector 3 that is provided within a cabin of the vehicle C, and a control part 4. The control part 4 executes image display processing for displaying a baby mobile image M by projecting it onto an indoor projection region R by the projector 3.SELECTED DRAWING: Figure 1

Description

Technical Field

[0001] The present invention relates to a vehicle display device that displays a baby merry image in a desired display mode in the vehicle interior.

Background Art

[0002] Conventionally, for example, a child seat described in Patent Document 1 is known. In the child seat according to Patent Document 1, a fixed frame covered by a cover extends from the front end of the seat portion, and the tip thereof is fixed to the stay of the headrest provided on the front seat. And the upper part of the cover is formed wide, and a display such as a TV or a game machine is attached here.

Prior Art Documents

Patent Documents

[0003]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0004] However, in the above conventional child seat, when a child sitting on the child seat gets tired of the video displayed on the display, if the child is small, the child cannot operate the display. Therefore, the driver has to operate the display instead, and there is a problem that the driver cannot concentrate on driving.

[0005] In addition, although bed merry is widely popular as a toy for calming a baby, it is difficult to arrange a bed merry in the vehicle. Therefore, when the baby cries, the driver is concerned and cannot concentrate on driving.

[0006] Therefore, the present invention has been made in view of the above problems, and an object thereof is to provide a vehicle display device that calms a child by displaying a baby merry image having the same function as a bed merry in the vehicle interior when a small child rides in the vehicle.

Means for Solving the Problems

[0007] The present invention is a vehicle display device 1 provided in a vehicle C equipped with seats, comprising a projection unit 3 provided in the interior of the vehicle C and a control unit 4, wherein the control unit 4 executes an image display process of projecting and displaying a baby merry image M onto a projection area R in the interior by the projection unit 3.

Effects of the Invention

[0008] According to the present invention, a baby merry image having the same function as a bed merry is displayed in a desired display mode in the vehicle interior to calm the child, and an in-vehicle environment can be formed in which the driver can concentrate on driving.

Brief Description of the Drawings

[0009]

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Mode for Carrying Out the Invention

[0010] Hereinafter, an embodiment of the present invention will be described with reference to the drawings. The vehicle display device according to this embodiment projects and displays a merry image for infants, which has the same function as a bed merry, in an appropriate display mode for an infant sitting or lying on a child seat installed on a vehicle seat, thereby calming the infant.

[0011] FIG. 1 is a schematic diagram showing an example of the state inside a vehicle cabin when the vehicle display device according to the present embodiment is installed. In FIG. 1, a child seat 2 is installed on the rear seat of the vehicle C. Generally, the installation mode of the child seat 2 varies depending on the age of the seated infant or child, such as forward-facing, rear-facing, or side-facing (the forward-facing installation state is shown in FIG. 1). Further, in FIG. 1, for example, a projector 3 (projection unit) is provided near the rearview mirror on the ceiling inside the vehicle cabin. This projector 3 can project and display an arbitrary image onto an arbitrary projection area R inside the vehicle cabin. In the present embodiment, at least an arbitrary image is projected and displayed on the ceiling of the passenger seat and the rear seat. The display content and the projection area R when the projector 3 projects and displays are controlled by a control unit 4 disposed, for example, inside the instrument panel or in a predetermined space inside the vehicle cabin. Note that the projector 3 can be installed at an arbitrary location other than near the rearview mirror, such as on the B-pillar, center console, front seat, rear seat, rear seat armrest, ceiling, etc. The projector 3 is an example of a projection unit.

[0012] Also, as shown in FIG. 1, in addition to this, inside the vehicle cabin, for example, a first camera 5 (first imaging unit) provided near the ceiling or rearview mirror and imaging at least the area where the child seat 2 is installed, a microphone 6 (voice acquisition unit) provided, for example, on the ceiling and capable of collecting the voice inside the vehicle cabin, a display 7 provided at a position visible to the driver in front of the driver's seat, a weight sensor 8 provided inside at least the seat where the child seat 2 is installed and capable of detecting the weight of objects and people on the seat, and a second camera 9 (second imaging unit) provided, for example, near the rearview mirror or in front of the driver's seat and imaging the driver's face are provided. Note that these devices such as the first camera 5, microphone 6, display 7, weight sensor 8, and second camera 9 (hereinafter, these devices are collectively referred to as other devices 10) are not essential components and may be provided as necessary. The first camera 5 is an example of a first projection unit, the microphone 6 is an example of a voice acquisition unit, and the second camera 9 is an example of a second imaging unit.

[0013] FIG. 2 is a block diagram showing the configuration of the vehicle display device according to the present embodiment. As described above, the vehicle display device 1 includes a projector 3, a control unit 4, and other devices 10.

[0014] The projector 3 is a projection-type video display device having a function of changing the direction of the optical axis of the irradiated light and the focal length. Here, the inner wall of the ceiling of the rear seat where the child seat 2 is installed is set as the projection area R, and the baby merry image M is projected and displayed on this projection area R. FIG. 3 is a diagram showing an example of the baby merry image M projected and displayed by the vehicle display device 1 according to the present embodiment. As a toy having functions such as calming a baby such as an infant or stimulating vision and hearing to promote development, for example, a bed merry is known. The bed merry rotates a plurality of models in the space above the baby's head while sleeping and outputs music having a relaxing effect, thereby calming the mood and stimulating vision and hearing. The baby merry image M is a moving image that performs the same function as the bed merry. As shown in FIG. 3, it is a moving image having a rotating image portion in which a plurality of images arranged in a circle along the circumferential direction rotate around the center O of the circle at the same speed in the same direction all at once. The baby sitting or lying on the child seat 2 can calm down by looking at the baby merry image M projected on the ceiling and can ride in the car quietly. At this time, it is also possible to output music having the same function as the bed merry from the in-vehicle speaker.

[0015] The control unit 4 is a computer equipped with a CPU 50, a memory 60, etc. inside. The CPU 50 is connected to the projector 3 and other devices 10 via a bus 65. For example, the CPU 50 outputs a control signal for the projector 3 to project and display a merry image M for infants, and information can be input and output between the CPU 50 and the other devices 10. Further, the CPU 50 controls the vehicle display device 1 by executing various programs stored in advance while using the storage function of the memory 60. The memory 60 is a storage device including a RAM and a ROM not particularly shown. The above various programs at least include a program for executing the flowcharts shown in FIGS. 5 and 7 to 10 described later. Note that the connection between the control unit 4 and each component may be a connection via a communication interface such as CAN (Controller Area Network), or may be an electrical connection through a hard wire.

[0016] The processing of the control unit 4 will be described below. FIG. 4 is a functional block diagram showing the configuration of the control unit 4 in the vehicle display device 1 according to the present embodiment. The control unit 4 includes an information acquisition unit 41 that performs information acquisition processing for acquiring imaging information captured by the first camera 5 and the second camera 9, voice information in the vehicle interior acquired by the microphone 6, and weight information of the infant on the child seat 2 acquired by the weight sensor 8; a direction detection unit 42 that performs direction detection processing for detecting the orientation of the child seat 2; a region setting unit 43 that performs region setting processing for variably setting a projection region R projected by the projector 3 based on the result of the direction detection processing; an age estimation unit 44 that performs age estimation processing for estimating the age of the infant based on the imaging information and the weight information acquired by the information acquisition unit 41; a first determination unit 45 that performs first determination processing for determining whether the infant on the child seat 2 is sleeping or awake based on the imaging information acquired by the information acquisition unit 41; a second determination unit 46 that performs second determination processing for determining whether the infant is crying or not based on the imaging information and the voice information acquired by the information acquisition unit 41; and an image display processing unit 47 that performs image display processing for causing the projector 3 to project and display the image data stored in the image data unit 48, which stores the image data to be the target of projection display by the projector 3 including at least the above-described merry image M for the infant, in a predetermined projection region R, or for causing the projector 3 or the display 7 to display the imaging information acquired by the information acquisition unit 41.

[0017] The processing contents performed by each processing unit will be specifically described. FIG. 5 is a flowchart showing the process of switching the projection area R in the vehicle display device according to the present embodiment. In FIG. 5, the information acquisition unit 41 acquires the imaging information of the first camera 5 (S1). The imaging information acquired here includes an image of the peripheral area including the child seat 2. The direction detection unit 42 analyzes the imaging information acquired in S1 to detect the orientation of the child seat 2 (S2) (direction detection process). The area setting unit 43 variably sets the projection area R according to the orientation of the child seat 2 detected in S2 (S3) (area setting process). FIG. 6 is a diagram showing an example of specifying the projection area R according to the orientation of the child seat 2 in the vehicle display device 1 according to the present embodiment. As shown in FIG. 6(A), for example, when it is detected that the child seat 2 is installed facing forward, the front area near the front of the ceiling is specified as the projection area R. As shown in FIG. 6(B), for example, when it is detected that the child seat 2 is installed facing backward, the rear area near the rear of the ceiling, which is behind the front area different from the front area, is specified as the projection area R. When the child seat 2 is installed sideways (the head is inside the passenger compartment and the feet are on the window side), the area near the window on the ceiling above the installation position of the child seat 2 may be specified as the projection area R. When the projection area R is set in S3, the image display processing unit 47 causes the projector 3 to project and display the baby merry image M stored in the image data unit 48 in the projection area R (S4) (image display process), and ends the process.

[0018] Note that, on the premise of detecting the orientation of the child seat 2, the direction detection unit 42 may detect based on the imaging information of the first camera 5 which seat (passenger seat, right rear seat, left rear seat, etc.) in the passenger compartment the child seat 2 is installed on.

[0019] Further, the direction detection unit 42 may determine the orientation of the child seat 2 based on whether the dedicated buckle used when installing the child seat 2 can be connected, or may determine based on the driver's switch operation.

[0020] FIG. 7 is a flowchart showing a process of performing projection display according to the age in the vehicle display device 1 according to the present embodiment. In FIG. 7, an information acquisition unit 41 acquires imaging information of the first camera 5 and weight information of the weight sensor 8 (S1) (information acquisition process). Since the imaging information acquired here includes an image of the peripheral area including the child seat 2 as described above, it also includes a face image of the infant on the child seat 2. The weight information includes the weight information of the infant on the child seat 2. These face image information and weight information are acquired as age estimation information. An age estimation unit 44 estimates the age of the infant on the child seat 2 based on the age estimation information acquired in S1 (S2) (age estimation process). Note that, for the age estimation process, a known age estimation technique may be used, or for example, the average value of the age obtained by inputting the face image information into AI and the age or month estimated from the weight information may be used as the estimated age. An image display processing unit 47 determines whether the age estimated in S2 is equal to or less than a predetermined value (for example, 1 year old or less) (S3). If it is greater than the predetermined value, the image display process is not performed. If the age estimated in S2 is equal to or less than the predetermined value, the projector 3 projects and displays the baby merry image M stored in the image data unit 48 in the projection area R (S4) (image display process), and the process ends.

[0021] FIG. 8 is a flowchart showing a process of performing projection display according to the sleep state of an infant in the vehicle display device 1 according to the present embodiment. In FIG. 8, the information acquisition unit 41 acquires the imaging information of the first camera 5 (S1). The imaging information acquired here includes the face image of the infant on the child seat 2 as described above. The first determination unit 45 analyzes the imaging information acquired in S1 to determine whether the infant on the child seat 2 is sleeping or awake (S2) (first determination process). Note that, for example, when the eyes are closed for a predetermined time or more, it may be determined that the infant is sleeping, or when there is no movement or little movement for a predetermined time or more, it may be determined that the infant is sleeping. When it is determined in S2 that the infant on the child seat 2 is awake, the image display processing unit 47 causes the projector 3 to project and display the infant merry image M stored in the image data unit 48 in the projection area R (S3) (image display process). When it is determined in S2 that the infant on the child seat 2 is sleeping, the image display processing unit 47 ends the process without performing the image display process.

[0022] FIG. 9 is a flowchart showing a process of performing projection display according to whether an infant is crying or not in the vehicle display device 1 according to the present embodiment. In FIG. 9, the information acquisition unit 41 acquires the imaging information of the first camera 5, the imaging information of the second camera 9, and the audio information of the microphone 6 (S1). The imaging information of the first camera 5 acquired here includes the face image of the infant on the child seat 2 as described above. The audio information includes the audio information of each occupant uttered in the vehicle interior. The imaging information of the second camera 9 includes the face image (specific image) of the driver. The second determination unit 46 determines whether the infant on the child seat 2 is crying or not based on the imaging information of the first camera 5 and the audio information of the microphone 6 acquired in S1 (S2) (second determination process). Note that, for the process of determining whether the infant is crying or not, a known technique may be used. For example, by inputting the face image information into AI, information on the expression and emotion of the infant can be acquired, and the state of the infant (for example, crying, laughing, talking, etc.) can be specified from the frequency distribution of the infant obtained by frequency analyzing the audio information, and it may be determined comprehensively whether the infant is crying or not from those information. If it is determined in S2 that the infant on the child seat 2 is not crying, the image display processing unit 47 causes the projector 3 to project and display the merry image M for infants stored in the image data unit 48 in the projection area R (S3) (image display process), and ends the process. If it is determined in S2 that the infant on the child seat 2 is crying, the image display processing unit 47 causes the projector 3 to project and display the face image of the driver included in the imaging information of the second camera 9 in the projection area R (S4) (image display process), and ends the process.

[0023] In the process shown in Fig. 9, it has been described that when the infant is crying, the projector 3 projects and displays the driver's face image in the projection area R. However, instead of the driver's face image, for example, an image (specific image) of an animal, object, character, etc. that the infant particularly likes may be projected and displayed. In this case, the images of animals, objects, characters, etc. may be registered in advance in the image data section 48. Also, when projecting and displaying images of animals, objects, characters, etc., in S1, the information acquisition section 41 may not need to acquire the imaging information of the second camera 9.

[0024] FIG. 10 is a flowchart showing a process of performing projection display when an infant does not stop crying in the vehicle display device 1 according to the present embodiment. In FIG. 10, the information acquisition unit 41 acquires imaging information of the first camera 5 and audio information of the microphone 6 (S1). The imaging information of the first camera 5 acquired here includes a face image of the infant on the child seat 2 as described above. The audio information includes information on the voices of each occupant emitted in the vehicle interior. The second determination unit 46 determines whether the infant on the child seat 2 is crying or not based on the imaging information of the first camera 5 and the audio information of the microphone 6 acquired in S1 (S2). This determination process is the same as the process of S2 in FIG. 9. If it is determined in S2 that the infant on the child seat 2 is not crying, the process ends without performing anything particularly. If it is determined in S2 that the infant on the child seat 2 is crying, the image display processing unit 47 causes the projector 3 to project and display the merry image M for infants stored in the image data unit 48 in the projection area R (S3). After a predetermined time in S3, the information acquisition unit 41 acquires the imaging information of the first camera 5 and the audio information of the microphone 6 again (S4), and the second determination unit 46 determines whether the infant on the child seat 2 is crying or not based on the imaging information of the first camera 5 and the audio information of the microphone 6 acquired in S4 (S5). If it is determined in S5 that the infant on the child seat 2 is not crying, the current projection display is maintained without performing anything particularly and the process ends. If it is determined in S5 that the infant on the child seat 2 is crying, the image display processing unit 47 increases the rotation speed of the merry image M for infants, or increases the luminance value, or performs both, and causes the projector 3 to project and display (S6). After a predetermined time in S6, the information acquisition unit 41 acquires the imaging information of the first camera 5 and the audio information of the microphone 6 again, and also acquires the imaging information of the second camera 9 (S7). The second determination unit 46 determines whether the infant on the child seat 2 is crying or not based on the imaging information of the first camera 5 and the audio information of the microphone 6 acquired in S7 (S8). If it is determined in S8 that the infant on the child seat 2 is not crying, the current projection display is maintained without performing anything particularly and the process ends.When it is determined in S8 that the infant on the child seat 2 is crying, the image display processing unit 47 causes the projector 3 to project and display the face image of the driver included in the imaging information of the second camera 9 on the projection area R instead of the infant merry image M (S9), and ends the process. Note that whether to display the face image of the driver in S9 may be determined according to the number of determination times from S7 to S8.

[0025] In addition, in the flowchart of FIG. 10 above, when music that performs the same function as the bed merry is output from the in-vehicle speaker, in the process of S6, the process of increasing the volume of the music may also be performed. Further, when the face image of the driver is projected and displayed instead of the infant merry image M, the image may be switched based on the driver's switch operation.

[0026] Also, when changing the display mode or volume of the infant merry image M, the projector 3 and the speaker may be controlled according to the preset setting information (not shown), or the degree of change may be varied according to the volume of the crying sound. For example, the higher the crying sound, the higher the rotation speed or the brightness of the infant merry image M may be increased.

[0027] By the process shown in this FIG. 10, even when the infant does not stop crying, it is possible to soothe the infant step by step and surely stop the crying.

[0028] In addition, in each process shown in FIGS. 5, 7 to 10, if necessary, the imaging information including the face image of the infant captured by the first camera 5 may be displayed on the display 7 provided at a position visible to the driver. For example, the face image of the infant may be displayed on the display 7 simultaneously with the process of S4 in FIG. 9, or the processes of S3 and S6 in FIG. 10.

[0029] Also, as described above, in the vehicle display device 1 according to the present embodiment, the other device 10 is not an essential component, and a part or all of it may be provided as needed. That is, regarding the processes of FIGS. 5, 7 to 10 described above, they may be executed in combination according to the presence or absence of the other device 10.

[0030] Furthermore, the image display processing unit 47 may cause the projector 3 to project and display an image other than the baby-friendly image M (for example, a landscape, a movie, a character preferred by the baby, etc.) on the projection area R according to the state and age of the baby on the child seat 2. At this time, the image to be projected and displayed may be registered in advance in the image data unit 48.

[0031] Furthermore, the image display processing unit 47 may prevent the baby from getting bored by varying the rotation state (for example, rotation speed, rotation direction, etc.) of the baby-friendly image M at predetermined intervals or varying the content (for example, characters or figures) of the rotating image.

[0032] Furthermore, one or a plurality of projectors 3 may be installed in the vehicle interior. In the case of one projector, it may be installed so that the entire ceiling can be within the projection display range. In the case of a plurality of projectors, an appropriate projector 3 may be selected according to the installation position of the corresponding child seat 2. Also, when a plurality of child seats 2 are installed, a plurality of baby-friendly images M may be projected and displayed on a plurality of projection areas R for each child seat 2.

[0033] As described above, in the vehicle display device 1 according to the present embodiment, a projector 3 provided in the interior of the vehicle C and a control unit 4 are provided. The control unit 4 executes an image display process for projecting and displaying a baby merry image M onto a projection area R in the interior by the projector 3. Therefore, the projector 3 can project a baby merry image M that has the same function as a bed merry and that makes a baby look at it with interest and be delighted, improving the baby's mood and preventing it from crying. As a result, the driver does not need to worry about the baby and can concentrate on driving.

[0034] In addition, since the projection area R in the interior is provided on the inner wall of the ceiling of the vehicle C, by directly projecting and displaying the baby merry image M on the ceiling, it is not necessary to provide a separate member such as a display device for display.

[0035] Furthermore, the control unit 4 executes a direction detection process for detecting the orientation of the child seat 2 placed on the seat, and an area setting process for variably setting the projection area R based on the detection result of the direction detection process. By making the projection area variable according to the orientation of the child seat, for example, in the case of a rear-facing arrangement, a merry image is projected and displayed in the rear area of the ceiling, and in the case of a forward-facing arrangement, in the front area of the ceiling, ensuring good visibility from the baby.

[0036] Moreover, the baby merry image M includes a plurality of rotating image portions arranged along the circumferential direction. The control unit 4 controls the projector 3 so that, in the image display process, the plurality of rotating image portions perform a display of rotating around a predetermined rotation center. Therefore, the baby can be strongly attracted, be fascinated, and be delighted, calming the baby and making it possible to concentrate on driving.

[0037] Furthermore, the control unit 4 executes information acquisition processing for acquiring age estimation information for estimating the age of an infant on the child seat 2 placed on the seat, and age estimation processing for estimating the age of the infant based on the age estimation information acquired in the information acquisition processing. Since the image display processing is executed when the age estimated in the age estimation processing is equal to or less than a predetermined value, for infants who have grown to an age outside the applicable range of the bed merry, it is possible to perform effective projection display only for infants in an age range who are interested in the bed merry without performing unnecessary display.

[0038] Furthermore, it has a first camera 5 that images the face of an infant on the child seat 2 placed on the seat, and the control unit 4 executes first determination processing for determining whether the infant is sleeping or awake according to the imaging result by the first camera 5. Since the image display processing is executed when it is determined in the first determination processing that the infant is awake, it is not necessary to perform unnecessary projection display for sleeping infants and it is possible to prevent waking up sleeping infants.

[0039] Furthermore, it has a microphone 6 that acquires the voice of an infant on the child seat 2 placed on the seat and a first camera 5 that images the face of the infant. The control unit 4 executes second determination processing for determining whether the infant is crying or not according to the voice acquisition result by the microphone 6 and the imaging result by the first camera 5. In the image display processing, when it is determined in the second determination processing that the infant is not crying, the infant merry image M is displayed in the projection area R by the projector 3, and when it is determined in the second determination processing that the infant is crying, a specific image different from the infant merry image M is displayed in the projection area R by the projector 3. Therefore, when the infant is not crying, it is possible to cheer up with the merry image, and even if the infant still cries, it is possible to stop the infant from crying by switching from the merry image to the specific image.

[0040] Furthermore, it has a second camera 9 that captures the face of the driver of the vehicle C, and the control unit 4 displays a face image of the driver based on the imaging result by the second camera 9 as a specific image in the image display process, so that the infant can be surely stopped from crying when the face the infant is familiar with comes into the field of view.

Explanation of Signs

[0041] C Vehicle M Merry image for infant O Center R Projection area 1 Display device for vehicle 2 Child seat 3 Projector 4 Control unit 5 First camera 6 Microphone 7 Display 8 Weight sensor 9 Second camera 10 Other devices 41 Information acquisition unit 42 Direction detection unit 43 Area setting unit 44 Age estimation unit 45 First determination unit 46 Second determination unit 47 Image display processing unit 48 Image data unit 50 CPU 60 Memory 65 Bus

Claims

1. A vehicle display device provided in a vehicle having seats, A projection unit provided in a cabin of the vehicle; A control unit; Equipped with The control unit is An image display process is executed to project and display an image of a baby merry-go-round on the projection area in the room by the projection unit. A display device for a vehicle.

2. The interior projection area is provided on an inner wall of the ceiling of the vehicle.

2. The display device for a vehicle according to claim 1.

3. The control unit further A direction detection process for detecting a direction of a child seat placed on the seat; an area setting process for variably setting the projection area based on a detection result of the direction detection process; 3. The display device for a vehicle according to claim 2, wherein the display device for a vehicle executes the following steps.

4. The baby merry-go-round image is A plurality of rotating image sections are arranged along a circumferential direction, The control unit, in the image display process, The projection unit is controlled so that the plurality of rotating image portions are displayed rotating around a predetermined rotation center.

4. The display device for a vehicle according to claim 2 or 3.

5. The control unit further An information acquisition process for acquiring age estimation information for estimating the age of an infant in a child seat placed on the seat; an age estimation process for estimating the age of the infant based on the age estimation information acquired in the information acquisition process; Run The image display process includes: Executed when the age estimated in the age estimation process is equal to or less than a predetermined value.

2. The display device for a vehicle according to claim 1.

6. a first imaging unit for imaging a face of an infant in a child seat placed on the seat, The control unit further execute a first determination process for determining whether the baby is sleeping or awake according to an imaging result by the first imaging unit; The image display process includes: This is executed when it is determined in the first determination process that the baby is awake.

2. The display device for a vehicle according to claim 1.

7. a voice acquiring unit that acquires voice from an infant in a child seat placed on the seat; A first imaging unit that captures an image of the face of the infant; and The control unit further execute a second determination process of determining whether the baby is crying or not based on the sound acquisition result by the sound acquisition unit and the image acquisition result by the first image acquisition unit; In the image display process, When it is determined in the second determination process that the baby is not crying, the baby merry image is displayed in the projection area by the projection unit; When it is determined in the second determination process that the baby is crying, a specific image different from the baby merry image is displayed in the projection area by the projection unit.

2. The display device for a vehicle according to claim 1.

8. A second imaging unit that captures an image of a face of a driver of the vehicle, The control unit is In the image display process, a face image of the driver based on an imaging result by the second imaging unit is displayed as the specific image.

8. The display device for a vehicle according to claim 7.

Images