JP2020082974A - In-cabin imaging device - Google Patents

Abstract

To provide an in-cabin imaging device properly imaging a person in a driving seat and a person in a front passenger seat.SOLUTION: An in-cabin imaging device (A) includes: a light source 2 emitting near-infrared ray; and a camera 1 disposed on a meter hood or a dashboard of a vehicle. The camera 1 images the face of a user using near-infrared ray emitted from the light source 2, reflected by the face of the user, and reflected by a reflection material disposed above the meter hood or the dashboard of the vehicle. For example, the camera 1 images using a front glass R of the vehicle as the reflection material.SELECTED DRAWING: Figure 1

Description

The present invention relates to a vehicle interior imaging device.

The state of an occupant such as a driver of a vehicle is detected, and the vehicle is controlled according to the state of the occupant.

Conventionally, a driver's face of a vehicle can be photographed. There is a photographing device (see Patent Document 1). This image capturing device captures an image of the occupant's face with a camera that is hidden in the hood portion of the dashboard and is located at a blind spot of the occupant.

JP, 2004-58799, A

However, the imaging device described in Patent Document 1 is arranged for imaging the driver's face, and there is a problem in that it is not possible to image the occupant sitting in the passenger seat.

Therefore, it is an object of the present invention to provide a vehicle interior image pickup apparatus capable of appropriately photographing passengers in a driver's seat and a passenger seat.

The vehicle interior imaging device according to an aspect of the present invention includes a light source that emits near-infrared rays, and a camera that is arranged on a meter hood or a dashboard of a vehicle, and the camera emits light from the light source and a face of a user. The near-infrared light reflected by the reflective material disposed above the meter hood or dashboard of the vehicle is used to image the face of the user.

Note that these comprehensive or specific aspects may be realized by a recording medium such as a system, a method, an integrated circuit, a computer program or a computer-readable CD-ROM, and the system, the method, the integrated circuit, the computer program. It may be realized by any combination of the recording medium and the recording medium.

The vehicle interior image pickup device according to the present invention can appropriately image the occupants in the driver's seat and the passenger seat.

FIG. 1 is a lateral view schematically showing the positions of an image pickup device and a user when an image is picked up by the image pickup device according to the embodiment. FIG. 2 is a top view schematically showing the positions of the image pickup device and the user at the time of image pickup by the image pickup device according to the embodiment. FIG. 3 is a block diagram showing a functional configuration of the image pickup apparatus according to the embodiment. FIG. 4 is an explanatory diagram showing an example of an image generated by imaging by the imaging device according to the embodiment. FIG. 5 is a schematic diagram showing a case where a windshield is used as a reflector in the image pickup apparatus according to the embodiment. FIG. 6 is a schematic diagram showing a case where a display plate of a HUD (Head Up Display) is used as a reflector in the image pickup apparatus according to the embodiment. FIG. 7 is a schematic diagram showing a case where a reflective material having a bulged shape is used in the imaging device according to the embodiment. FIG. 8 is a schematic diagram showing a configuration in which an airflow is applied to the camera according to the embodiment.

The vehicle interior imaging device according to an aspect of the present invention includes a light source that emits near-infrared rays, and a camera that is arranged on a meter hood or a dashboard of a vehicle, and the camera emits light from the light source and a face of a user. The near-infrared light reflected by the reflective material disposed above the meter hood or dashboard of the vehicle is used to image the face of the user.

According to the above aspect, the vehicle interior imaging device captures an image of the user by using near-infrared rays that travel in a space above the meter hood or dashboard of the vehicle that has relatively few obstacles that obstruct the progress of near-infrared rays. Therefore, the vehicle interior imaging device can appropriately capture images of the occupants in the driver's seat and the passenger seat.

For example, the camera captures the image using the windshield of the vehicle as the reflector.

According to the above aspect, the vehicle interior imaging device also uses the windshield of the vehicle as a reflecting member, so that the passengers in the driver's seat and the passenger's seat are appropriately provided without a member for reflection other than the windshield. Can be taken to.

For example, the camera uses the windshield mixed with a reflection member that reflects near-infrared rays or the windshield to which a reflection film that reflects near-infrared rays is attached as the reflection material to perform the image capturing.

According to the above-described aspect, the vehicle interior imaging device appropriately uses the windshield whose reflectance is improved by the reflection member or the reflection film as compared with the ordinary windshield as the reflection material, and thus the driver and the occupant in the front passenger seat are appropriately arranged. Can be taken to.

For example, the camera takes the image by using a display plate of a head-up display device arranged on a dashboard or a meter hood of the vehicle as the reflector.

According to the above aspect, the vehicle interior imaging device uses the display plate of the head-up display device included in the vehicle also as a reflecting member, so that the driver's seat does not include a member for reflecting other than the reflecting member. Also, the passenger in the passenger seat can be appropriately photographed.

For example, the camera is provided in a light projecting unit of the head-up display device.

According to the above aspect, the vehicle interior imaging device captures an image using the camera built in the head-up display device. Therefore, it is not necessary to separately install a camera on the vehicle, and there are advantages of cost reduction due to reduction of the number of parts and simplification of installation work.

For example, the light source is arranged at a position and an orientation that irradiates the face of the user with near infrared rays without passing through reflection.

According to the above aspect, the vehicle interior image pickup apparatus can receive light sufficient for image pickup and be used for image pickup even when the intensity of light emitted from the light source is relatively weak. Therefore, a light source having relatively low performance can be used, and there are advantages of low cost and low heat generation.

For example, the light source and the camera are arranged at different positions.

According to the above aspect, the vehicle interior imaging device can prevent heat generated by the light source from being transmitted to the camera, and can avoid a malfunction or malfunction of the camera due to high temperature.

For example, the light source is arranged above the windshield of the vehicle.

According to the above aspect, in the vehicle interior imaging device, the near-infrared rays emitted from the light source travel in a space between the driver's seat or the passenger seat and the windshield in which there are relatively few obstacles that obstruct the progress of the near-infrared rays. Therefore, the vehicle interior image capturing apparatus can more appropriately capture the images of the occupants in the driver's seat and the passenger seat by lessening the progress of the near infrared rays.

For example, the reflector has a shape that bulges toward the rear of the vehicle.

According to the above-described aspect, the vehicle interior imaging device can image a wider range of imaging targets by using the reflective material (so-called convex mirror) having a bulged shape.

For example, the reflective material transmits visible light.

According to the above aspect, the vehicle interior image capturing apparatus can capture an image using the reflective material that is not visually recognized by the user. Therefore, it is possible to prevent the reflecting material as a member provided in the vehicle interior only for the image capturing by the vehicle interior imaging device from giving the user a feeling of strangeness. Therefore, the vehicle interior imaging device can appropriately capture the image of the occupants in the driver's seat and the passenger seat while suppressing the user's discomfort.

For example, the camera is arranged at a position where at least the lens of the camera is hit by the air flow generated by the defroster of the vehicle.

According to the above aspect, the vehicle interior imaging device can remove frost or dust that may adhere to the surface of the lens of the camera due to the air flow generated by the defroster. Therefore, the vehicle interior imaging device can obtain more appropriate images of the occupants in the driver's seat and the passenger seat by avoiding the adhesion of frost or the like to the surface of the lens of the camera.

Hereinafter, embodiments will be specifically described with reference to the drawings.

It should be noted that each of the embodiments described below shows a comprehensive or specific example. Numerical values, shapes, materials, constituent elements, arrangement positions and connection forms of constituent elements, steps, order of steps, and the like shown in the following embodiments are examples, and are not intended to limit the present invention. Further, among the constituent elements in the following embodiments, constituent elements that are not described in the independent claims showing the highest concept are described as arbitrary constituent elements.

(Embodiment)
In the present embodiment, an image pickup apparatus A capable of appropriately photographing passengers in the driver's seat and the passenger seat will be described. The imaging device A corresponds to a vehicle interior imaging device.

The image pickup apparatus A can take an image of a user sitting in at least one of a driver's seat and a passenger's seat in a vehicle cabin. Then, the image pickup apparatus A can appropriately image the occupants in the driver's seat and the passenger's seat, and can acquire the presence or absence of the occupant in each of the driver's seat and the passenger's seat, or the information such as the face direction, line of sight or posture of the occupant.

FIG. 1 is a lateral view schematically showing the positions of the image pickup apparatus A and the user at the time of image pickup by the image pickup apparatus A according to this embodiment. FIG. 2 is a top view schematically showing the positions of the image pickup apparatus A and the user at the time of image pickup by the image pickup apparatus A according to the present embodiment. In the following description, the XYZ coordinate axes shown in each drawing may be used. Further, the plus and minus directions of the Z axis are referred to as up (upward) and down (downward), respectively, and the plus and minus directions of the Y axis are forward (forward) and backward (rearward), respectively. ), and the plus direction and the minus direction of the X axis may be referred to as right (right direction) and left (left direction), respectively. As shown in FIG. 1 and the like, the Y-axis plus direction is also the traveling direction of the vehicle.

As shown in FIGS. 1 and 2, the image pickup apparatus A includes a camera 1 and a light source 2. Further, the imaging device A uses the reflector R provided in the vehicle at the time of image capturing, which is disposed above the meter hood or the dashboard of the vehicle. An example of the reflector R is a windshield of a vehicle, and this case is illustrated, but another example will be described in detail later.

The light source 2 is a light source that emits light for imaging by the camera 1. The light for imaging is, for example, near infrared light (peak wavelength is about 940 nm to 950 nm).

The light source 2 is arranged in a position and an orientation capable of emitting light to the user U sitting in the driver's seat or the passenger seat. For example, the light source 2 may be arranged on the face of the user U in a position and direction in which light is emitted without using reflection. In other words, the light source 2 may be arranged in front of the user U sitting in the driver's seat or the passenger seat, in a direction of emitting light toward the rear of the vehicle. More specifically, the light source 2 may be arranged above the windshield of the vehicle. By doing so, there is an advantage that even when the intensity of the light emitted from the light source 2 is relatively weak, the light sufficient for the image pickup is received by the camera 1 and can be used for the image pickup.

The light source 2 emits light L1 for imaging. The light L1 travels toward the face of the user U and is reflected by the face of the user U to become light L2. The light L2 travels toward the reflective material R and is reflected by the reflective material R to become light L3. The light L3 travels toward the camera 1 and is received by the camera 1. The specific configuration of the reflector R will be described later in detail.

The camera 1 is a camera that images the face of the user U. The camera 1 is arranged at a position different from the light source 2. The camera 1 takes an image of the face of the user U using the light emitted from the light source 2 (for example, near infrared rays).

The camera 1 is arranged on the meter hood or dashboard of the vehicle. More specifically, the camera 1 is arranged on the meter hood or dashboard near the center of the vehicle in the left-right direction. Further, the camera 1 is arranged in a direction capable of receiving the light L3 reflected by the reflecting material R, that is, facing the front of the vehicle and the diagonally upper direction.

In this manner, the camera 1 captures an image of the face of the user U using the light emitted from the light source 2, reflected by the face of the user U, and reflected by the reflective material R.

The light used by the camera 1 for image capturing and the light emitted from the light source 2 may be visible light instead of near infrared light. However, the use of near-infrared rays has an advantage that the near-infrared rays are hard to be visually recognized, so that it is difficult for the user to recognize that the image is picked up.

FIG. 3 is a block diagram showing a functional configuration of the image pickup apparatus A according to this embodiment.

As shown in FIG. 3, the image pickup apparatus A includes a camera 1, a light source 2, a vehicle interior monitoring ECU (Electronic Control Unit) 8, and a vehicle control ECU 9 as functional configurations.

The camera 1 is a camera that captures an image of the face of the user U, and its position and orientation are as described above. The camera 1 includes an image sensor (not shown) and an optical system (not shown) for forming an image of a subject to be imaged on the image sensor, and outputs an image of the imaged subject. The camera 1 takes an image under the control of the vehicle interior monitoring ECU 8. The camera 1 captures an image with the received light L3 to generate an image of the face of the user U as an imaging target. The generated image is provided to the vehicle interior monitoring ECU 8.

The light source 2 is a light source that irradiates the user U with light for imaging by the camera 1, and its position and orientation are as described above. The light source 2 is, for example, an LED (Light Emitting Diode). The light source 2 emits light under the control of the vehicle interior monitoring ECU 8. The light source 2 is not limited to the configuration controlled by the vehicle interior monitoring ECU 8, and for example, the camera 1 may control the light source 2.

The vehicle interior monitoring ECU 8 is an ECU for monitoring the vehicle interior of the vehicle. The vehicle interior monitoring ECU 8 controls the camera 1 to capture an image, and acquires the image generated by the camera 1. The vehicle interior monitoring ECU 8 also controls the light source 2 to emit light. Specifically, the vehicle interior monitoring ECU 8 controls the camera 1 so as to capture an image while the light source 2 emits light or during the period.

Further, the vehicle interior monitoring ECU 8 performs image recognition processing on the acquired image to determine whether or not an occupant is seated in each of the driver's seat and the passenger seat of the vehicle, or the direction, line of sight or posture of the occupant's face. The vehicle control ECU 9 is provided with information indicating the determination result.

The vehicle control ECU 9 is a general term for ECUs related to vehicle control. The vehicle control ECU 9 is specifically an ECU that is connected to equipment in the vehicle such as an engine, a transmission, a brake, a steering wheel, an airbag or an air conditioner, and controls the connected equipment. The vehicle control ECU 9 controls the connected equipment based on the information obtained from the vehicle interior monitoring ECU 8.

When the vehicle control ECU 9 is, for example, an ECU that controls an airbag, the vehicle control ECU 9 determines whether the seat in which a person is seated among the driver's seat and the passenger's seat based on the result of the determination based on the image acquired by the vehicle interior monitoring ECU 8. Control may be performed in which only the airbag is operated and the operation of the airbag in a seat where a person is not riding is suppressed.

Further, when the vehicle control ECU 9 is, for example, an ECU that controls an air conditioner, the vehicle control ECU 9 determines, based on the result of the determination based on the image acquired by the vehicle interior monitoring ECU 8, the seat in which a person is in the driver seat or the passenger seat. The control may be performed such that the air flow sent to the seat is relatively large, and the air flow sent to a seat not occupied by a person is relatively small.

FIG. 4 is an explanatory diagram showing an example of an image generated by image pickup of the image pickup apparatus A according to this embodiment.

FIG. 4 is an example of an image generated by the camera 1 when the user U1 is in the driver's seat and the user U2 is in the passenger seat as shown in FIG. Since the camera 1 images the users U1 and U2 through the reflection by the reflecting material R, the optical path length of the imaging light becomes longer, so that the users U1 and U2 can be directly captured by the camera 1 (that is, without reflection). It is possible to acquire an image with a wider angle of view than when capturing an image.

Then, the vehicle interior monitoring ECU 8 determines whether or not an occupant is in each of the driver seat and the passenger seat of the vehicle based on the acquired image, and the vehicle control ECU 9 controls the equipment based on the determination result. obtain.

Hereinafter, a specific example of the reflective material R will be described.

(1) Example of Using Windshield as Reflective Material FIG. 5 is a schematic diagram showing a case where the windshield is used as the reflective material R in the image pickup apparatus A according to the present embodiment. In this example, the camera 1 uses the windshield 4 as the reflective material R to image the face of the user U.

As shown in FIG. 5, the camera 1 is arranged on the meter hood 3 of the vehicle.

The light source 2 is arranged above the windshield of the vehicle.

The light L1 emitted by the light source 2 is reflected by the face of the user U to become light L2. The light L2 travels toward the windshield 4 serving as the reflector R, is reflected by the windshield 4 and becomes light L3, which is received by the camera 1.

The windshield 4 may be the same as a general windshield of a vehicle, or may be a general windshield of a vehicle with a reflective film 4A attached to the surface thereof. When a general windshield of a vehicle is used as the windshield 4, there is an advantage that a windshield made of a special material different from the windshield or a film attached to the windshield is not necessary. On the other hand, when a general windshield having a reflection film 4A attached to the surface thereof is used as the windshield 4, even when the intensity of the light emitted from the light source 2 is relatively weak, the reflection film 4A causes reflection to provide an image. A sufficient amount of light can be received by the camera 1. Therefore, a light source having a relatively low performance can be used as the light source 2, which has advantages of low cost and low heat generation.

Further, a general windshield mixed with a reflecting member such as particles that reflect light may be used as the windshield 4.

Although the example in which the camera 1 is arranged on the meter hood 3 is shown, the camera 1 may be arranged on the dashboard 5.

(2) Example in which HUD display plate is used as a reflector FIG. 6 is a schematic diagram showing a case where the HUD display plate is used as a reflector R in the image pickup apparatus A according to the present embodiment. In this example, the camera 1 captures an image using a HUD display plate as the reflector R.

As shown in FIG. 6, the HUD includes a display plate 6A and a light projecting unit 6B.

The light projecting unit 6B is a light source that emits image light M1 that is light indicating an image presented to the user U by the HUD.

The display plate 6A reflects the image light M1 emitted from the light projecting unit 6B toward the user U. The image light M1 is reflected by the display plate 6A to become the image light M2, travels toward the user U, and is visually recognized by the user U. The user U visually recognizes the image presented by the light projecting unit 6B by the image light M2.

As shown in FIG. 6, the camera 1 is arranged on the dashboard 5 of the vehicle.

The light L2 emitted from the light source 2 and reflected on the face of the user U travels toward the display plate 6A serving as the reflecting material R, is reflected by the display plate 6A, becomes light L3, and is received by the camera 1. ..

Although the example in which the camera 1 is arranged on the dashboard 5 is shown, the camera 1 may be arranged on the meter hood 3.

The camera 1 may be provided in the light projecting unit 6B of the HUD. More specifically, the camera 1 may be configured integrally with the light projecting unit 6B of the HUD. Further, the camera 1 may be arranged inside the light projecting unit 6B of the HUD. This has the advantage that the camera 1 and the HUD can be configured as an integrated device.

Further, the light source 2 may also be included in the light projecting unit 6B of the HUD. This has the advantage that the imaging device A and the HUD can be configured as an integrated device.

(3) Example of using reflective material having bulged shape FIG. 7 is a schematic diagram showing a case where the reflective material 7 having a bulged shape is used in the imaging device A according to the present embodiment. In this example, the camera 1 uses the reflective material 7 having a shape bulging toward the rear of the vehicle as the reflective material R to perform shooting.

As shown in FIG. 7, the reflective material 7 has a shape that bulges toward the rear of the vehicle, in other words, the surface of the reflective material 7 has a shape that swells smoothly toward the rear of the vehicle. is doing. For example, the reflector 7 has the shape of a convex mirror. The reflective material 7 functions as a convex mirror for the light used for imaging.

Since the reflective material 7 has a bulged shape, light for imaging can be reflected toward the camera 1 from a wider range than when it has a planar shape. Therefore, the camera 1 can shoot a wider range as a shooting target by using the reflecting material 7 as the reflecting material R. The same effect can be obtained when the HUD display plate 6A described in (2) above has a bulged shape.

Note that the position where the camera 1 is arranged may be further determined in relation to the air flow of the defroster included in the vehicle. FIG. 8 is a schematic diagram showing a configuration in which the airflow 11 is applied to the camera 1 according to the present embodiment.

In FIG. 8, the camera 1 is arranged at a position where the airflow 11 generated by the defroster of the vehicle hits. The vehicle 12 may be provided with a member 12 that changes the direction or path of the airflow 11 generated by the defroster.

When the air flow 11 generated by the defroster hits the camera 1, it has a defrosting effect on the surface of the camera 1 (more specifically, the surface of an optical system such as a lens included in the camera 1) and adheres to the surface of the camera 1. It has an effect of removing dust and the like. The airflow 11 generated by the defroster may hit not only the surface of the lens but also the surface including the lens of the camera 1.

When the reflective material R reflects near-infrared rays and transmits visible light, the reflective material R is not visually recognized by the user U, so the user U cares about the existence of the reflective material R. There is an advantage of not doing.

As described above, the vehicle interior imaging device of the present embodiment uses the near infrared rays that travel in a space above the meter hood or dashboard of the vehicle that has relatively few obstacles that obstruct the progress of the near infrared rays. Take an image. Therefore, the vehicle interior imaging device can appropriately capture images of the occupants in the driver's seat and the passenger seat.

In addition, the vehicle interior imaging device also uses the windshield of the vehicle as a reflecting material, so that an image of the occupant in the driver's seat and the front passenger seat can be taken appropriately without providing a member for reflection in addition to the windshield. You can

In addition, the vehicle interior image pickup device can appropriately photograph the driver and the passenger in the passenger seat by also using the windshield whose reflectance is improved by a reflection member or a reflection film as compared with a normal windshield as a reflection material. You can

In addition, the vehicle interior imaging device uses the display plate of the head-up display device included in the vehicle also as a reflecting member, so that the driver seat and the passenger seat can be provided without a member for reflecting other than the reflecting member. The occupant can be photographed appropriately.

Further, the vehicle interior image pickup device picks up an image by using a camera built in the head-up display device. Therefore, it is not necessary to separately install a camera on the vehicle, and there are advantages of cost reduction due to reduction of the number of parts and simplification of installation work.

Further, in the vehicle interior imaging device, even when the intensity of the light emitted from the light source is comparatively weak, the light sufficient for the imaging is received by the camera and can be used for the imaging. Therefore, a light source having relatively low performance can be used, and there are advantages of low cost and low heat generation.

Further, the vehicle interior imaging device can prevent heat generated by the light source from being transmitted to the camera, and can avoid malfunction or malfunction of the camera due to high temperature.

Further, in the vehicle interior imaging device, the near infrared rays emitted from the light source travel in a space between the driver's seat or the passenger seat and the windshield with relatively few obstacles that obstruct the progress of the near infrared rays. Therefore, the vehicle interior image capturing apparatus can more appropriately capture the images of the occupants in the driver's seat and the passenger seat by lessening the progress of the near infrared rays.

Further, the vehicle interior image pickup device can pick up an image pickup target in a wider range by using the reflective material (so-called convex mirror) having a bulged shape.

Further, the vehicle interior image pickup device can take an image using a reflective material that is not visually recognized by the user. Therefore, it is possible to prevent the reflecting material, which is a member provided in the vehicle interior only for imaging by the vehicle interior imaging device, from giving the user a feeling of strangeness. Therefore, the vehicle interior imaging device can appropriately capture the image of the occupants in the driver's seat and the passenger seat while suppressing the user's discomfort.

In addition, the vehicle interior imaging device can remove frost or dust that may adhere to the surface of the lens of the camera due to the airflow generated by the defroster. Therefore, the vehicle interior imaging device can obtain more appropriate images of the occupants in the driver's seat and the passenger seat by avoiding the adhesion of frost or the like to the surface of the lens of the camera.

Although the imaging device and the like according to one or more aspects have been described above based on the embodiment, the present invention is not limited to this embodiment. As long as it does not depart from the gist of the present invention, various modifications that a person skilled in the art can think of in the present embodiment, and a form constructed by combining the components in different embodiments are also within the scope of one or more aspects. May be included within.

INDUSTRIAL APPLICABILITY The present invention can be used for an image pickup device capable of appropriately photographing passengers in a driver's seat and a passenger's seat. More specifically, it can be used for a car navigation device or an IVI (In-Vehicle Information) device installed in a vehicle interior.

1 Camera 2 Light Source 3 Meter Hood 4 Windshield 4A Reflective Film 5 Dashboard 6A Display Board 6B Projector 7, R Reflector 8 Vehicle Interior Monitoring ECU
9 Vehicle control ECU
11 Airflow 12 Member A Imaging Device L1, L2, L3 Light M1, M2 Image Light U, U1, U2 User

Claims (11)

A light source that emits near infrared rays,
With a camera arranged on the meter hood or dashboard of the vehicle,
The camera is
Vehicle interior imaging that captures the user's face using near-infrared light emitted from the light source, reflected by the user's face, and reflected by a reflector located above the vehicle's meter hood or dashboard apparatus. The vehicle interior imaging device according to claim 1, wherein the camera captures the image by using a windshield of the vehicle as the reflector. The said camera uses the said windshield which mixed the reflection member which reflects a near-infrared ray, or the said windshield which stuck the reflection film which reflects a near-infrared ray as the said reflective material, and image|photographs it. Vehicle interior imaging device. The vehicle interior image pickup device according to claim 1, wherein the camera performs the image pickup by using a display plate of a head-up display device arranged on a dashboard or a meter hood of the vehicle as the reflective material. The vehicle interior imaging device according to claim 4, wherein the camera is provided in a light projecting unit of the head-up display device. The vehicle interior imaging device according to any one of claims 1 to 5, wherein the light source is arranged at a position and a direction in which the face of the user is irradiated with near infrared rays without passing through reflection. The vehicle interior image pickup device according to claim 1, wherein the light source and the camera are arranged at positions different from each other. The vehicle interior image pickup device according to claim 1, wherein the light source is arranged on an upper portion of a windshield of the vehicle. The vehicle interior imaging device according to claim 1, wherein the reflector has a shape that bulges rearward of the vehicle. The vehicle interior imaging device according to claim 1, wherein the reflective material transmits visible light. The vehicle interior imaging device according to any one of claims 1 to 10, wherein the camera is arranged at a position where at least a lens of the camera is hit by an air flow generated by a defroster of the vehicle.

Images