JP7101574B2 - Crew condition detection device integrated display and display control device - Google Patents

Description

The present invention relates to a display with an integrated occupant state detection device for a vehicle and a display control device.

Conventionally, a DMS (Drive Monitoring System) for detecting a driver's dozing and inattentive states has been proposed. Further, there has been proposed a DMS integrated display in which an infrared LED (Light Emitting Diode) used as a light source of a DMS camera is integrated with a display mounted on a vehicle. The conventional DMS integrated display has a problem that it cannot be made thinner and narrower because the infrared LED prepared as a separate unit is incorporated in the display.

The line-of-sight detection device according to Patent Document 1 displays an infrared light pattern, images a range including the eye of the subject in which the corneal reflex image of the infrared light pattern is reflected, and the pupil and the corneal reflex image are taken from the captured image. Is extracted to detect the line of sight of the subject. This line-of-sight detection device realizes a thin and narrow frame of the liquid crystal display by replacing a part of the white LED which is the backlight of the liquid crystal display with an infrared LED.

Japanese Unexamined Patent Publication No. 2014-188322

By the way, in recent years, an occupant state detecting device that detects not only the state of the driver but also the state of other occupants has been proposed. The occupant state detection device detects the state of each occupant in the vehicle, such as dozing and inattentiveness, by processing the image captured by the camera mounted on the vehicle. When the infrared LED that is the light source of the camera used in this occupant state detection device is built in the backlight of the liquid crystal display as in Patent Document 1, a large area is required to irradiate each occupant with infrared light. Since it is necessary to arrange a large number of infrared LEDs on the back surface of the liquid crystal display, the power consumption of the infrared LEDs becomes large, and there is a problem that it is not realistic in a field where low power consumption is required such as an electric vehicle. ..

The present invention has been made to solve the above-mentioned problems, and an object of the present invention is to suppress power consumption when detecting a state of an occupant.

The occupant state detection device integrated display according to the present invention includes a camera having a function of capturing an infrared region, a liquid crystal display that illuminates the image pickup direction of the camera, and a plurality of white light emitting elements and a plurality of white light emitting elements arranged on the back surface of the liquid crystal display. The infrared light emitting element of the above, the occupant position detection unit that detects the position of the occupant on the vehicle using the image captured by the camera, and the occupant on the vehicle using the image captured by the camera. A occupant state detection unit that detects the state of the occupant, a liquid crystal display control unit that controls the transmission rate of the area corresponding to the occupant position detected by the occupant position detection unit, and a plurality of infrared light emitting elements. Of these, the transmission rate changes compared to normal drawing due to the control of the infrared light emitting element control unit that emits light from the infrared light emitting element in the area corresponding to the occupant position detected by the occupant position detection unit and the liquid crystal display control unit. It is provided with a white light emitting element control unit that turns off a plurality of white light emitting elements during the period.

According to the present invention, among the plurality of infrared light emitting elements arranged on the back surface of the liquid crystal display, only the infrared light emitting element in the area corresponding to the position of the occupant is made to emit light, so that the state of the occupant is detected. It is possible to suppress the power consumption at that time.

It is a block diagram which shows the configuration example of the occupant state detection device integrated display which concerns on Embodiment 1. FIG. FIG. 2A is a front view of the occupant state detection device integrated display according to the first embodiment, and FIG. 2B is a sectional view taken along the line AA. It is a time chart which shows the operation example of the liquid crystal display and LED in Embodiment 1. FIG. It is a flowchart which shows the operation example of the occupant state detection device integrated display which concerns on Embodiment 1. It is a block diagram which shows the configuration example of the occupant state detection device integrated display which concerns on Embodiment 2. FIG. It is a time chart which shows the operation example of the liquid crystal display and LED in Embodiment 2. 7A and 7B are diagrams showing a hardware configuration example of the display control device according to each embodiment.

Embodiment 1.
FIG. 1 is a block diagram showing a configuration example of the occupant state detection device integrated display 1 according to the first embodiment. The occupant state detection device integrated display 1 includes a camera 2, a liquid crystal display (hereinafter referred to as "LCD") 3, a white LED 4, an infrared LED 5, and a display control device 10. The white LED 4 corresponds to a "white light emitting element", and the infrared LED 5 corresponds to an "infrared light emitting element". The display control device 10 includes an occupant state detection device 11, an LCD control unit 14, a white LED control unit 15, and an infrared LED control unit 16. The occupant state detecting device 11 includes an occupant position detecting unit 12 and an occupant state detecting unit 13.

2A is a front view of the occupant state detection device integrated display 1 according to the first embodiment, and FIG. 2B is a sectional view taken along the line AA. Note that the display control device 10 is not shown in FIGS. 2A and 2B. The occupant state detection device integrated display 1 is installed on a dashboard or the like. In the occupant state detection device integrated display 1, for example, the occupant state detection device 11 is integrated with a display that displays a map image or the like generated by a car navigation device.

A camera 2 is installed in the display frame of the occupant state detection device integrated display 1. The camera 2 has a function of imaging an infrared region in addition to a function of imaging a visible light region. The camera 2 captures at least the driver's seat and the passenger's seat in the vehicle interior, and preferably captures the driver's seat, the passenger's seat, and the rear seat. Although not shown, the driver's seat, passenger's seat, and rear seat may be imaged by a plurality of cameras 2. Further, as shown in FIG. 1, the camera 2 has an exposure meter 2a for measuring the brightness of the subject.

An LCD 3 is installed in front of the occupant state detection device integrated display 1. In the examples of FIGS. 2A and 2B, the surface of the LCD 3 is covered with a protective cover or a touch panel. Of the LCD3, the right area 3R is the area facing the driver's seat, the central area 3C is the gap between the driver's seat and the passenger seat and facing the rear seat, and the left area 3L is the area facing the passenger seat. be. In a vehicle with the driver's seat on the left side, the left area 3L is the area facing the driver's seat, and the right area 3R is the area facing the passenger seat. The number and position of the areas of the LCD 3 can be changed according to the place where the occupant state detection device integrated display 1 is installed or the occupants targeted by the occupant state detection device 11.

A plurality of white LEDs 4 which are backlights are installed on the back surface of the LCD 3. Further, on the back surface of the LCD 3, a plurality of infrared LEDs 5 that serve as a light source for the camera 2 when the vehicle interior is dark are installed. In the example of FIG. 2B, the white LEDs 4 and the infrared LEDs 5 are arranged alternately. The backlight may be configured by a direct type in which the white LED 4 and the infrared LED 5 are arranged on the entire back surface of the LCD 3, or an edge type in which the white LED 4 and the infrared LED 5 are arranged at the end of the LCD 3. By arranging the infrared LED 5 together with the white LED 4 on the back surface of the LCD 3, it is possible to realize a thin and narrow frame of the occupant state detection device integrated display 1. The light from the backlight passes through the LCD 3 and illuminates the image pickup direction of the camera 2.

Of the plurality of infrared LEDs 5, a plurality of infrared LEDs 5 arranged in a range facing the right area 3R of the LCD 3 are referred to as "right area infrared LEDs 5R", and a plurality of infrared LEDs arranged in a range facing the central area 3C. The infrared LED 5 is referred to as a "central area infrared LED 5C", and a plurality of infrared LEDs arranged in a range facing the left area 3L is referred to as a "left area infrared LED 5L". On the other hand, the white LED 4 has no distinction according to the area of the LCD 3.

The occupant position detection unit 12 shown in FIG. 1 detects the presence or absence of an occupant and the position of the occupant using the image captured by the camera 2, and determines the detection result by the occupant state detection unit 13, the LCD control unit 14, and the white LED control. Output to unit 15 and infrared LED control unit 16. In the first embodiment, the "occupant" refers to each occupant of the driver's seat, the passenger seat, and the rear seat, and the "occupant's position" refers to the seat in which the occupant is seated.

When the occupant position detection unit 12 detects an occupant, the occupant state detection unit 13 detects the occupant's dozing state, inattentiveness, and the like by using the image captured by the camera 2.

FIG. 3 is a time chart showing an operation example of the LCD 3, the white LED 4, and the infrared LED 5 in the first embodiment. The operation of the LCD control unit 14, the white LED control unit 15, and the infrared LED control unit 16 will be described with reference to FIG.

The LCD control unit 14 draws a map image or the like of the car navigation device on the LCD 3 (hereinafter, referred to as "normal drawing"). Further, the LCD control unit 14 draws a map image or the like in a state where the transmittance of the LCD 3 is intentionally controlled (hereinafter, referred to as “transmittance control drawing”). Specifically, when the occupant position detection unit 12 does not detect the occupant, the LCD control unit 14 normally draws in the entire area of the LCD 3. On the other hand, when the occupant is detected by the occupant position detection unit 12, the LCD control unit 14 draws normally and controls the transmittance for the area corresponding to the detected occupant position, as shown in FIG. And are performed alternately, and normal drawing is performed for the area that does not correspond to the detected position of the occupant. For example, when the map image or the like drawn on the LCD 3 is 60 frames, the LCD control unit 14 repeats the normal drawing and the transmittance control drawing in 120 frames, which is doubled.

Further, the LCD control unit 14 controls the transmittance of the LCD 3 at the time of transmission control drawing according to the brightness measured by the exposure meter 2a. For example, the LCD control unit 14 increases the transmittance of the LCD 3 when the brightness of the subject is less than the predetermined brightness, and increases the transmittance of the LCD 3 when the brightness of the subject is equal to or higher than the predetermined brightness of the LCD 3. Decrease the transmittance. As will be described in detail later, the brightness of the infrared LED 5 is adjusted by controlling the transmittance of the LCD 3.

The white LED control unit 15 controls the light emission of the white LED 4, which is a backlight, in synchronization with the control of the LCD 3 by the LCD control unit 14. As shown in FIG. 3, the white LED control unit 15 causes the white LEDs 4 in the entire area to emit light during normal drawing of the LCD 3, and is turned off during the transmittance control drawing. Since the white LEDs 4 in all areas emit light intermittently, the brightness of the LCD 3 becomes uniform regardless of the area.

The infrared LED control unit 16 controls the light emission of the infrared LED 5, which is the light source of the camera 2, in synchronization with the control of the LCD 3 by the LCD control unit 14. When the occupant is not detected by the occupant position detection unit 12, the infrared LED control unit 16 causes the infrared LED 5 in the entire area to emit light. On the other hand, when the occupant is detected by the occupant position detection unit 12, the infrared LED control unit 16 continuously emits the infrared LED 5 in the area corresponding to the detected occupant position as shown in FIG. , Turn off the infrared LED 5 in the area that does not correspond to the detected occupant position. Compared with the case where the infrared LED 5 in the entire area emits light, the case where only the infrared LED 5 in the area corresponding to the position of the occupant emits light can suppress the power consumption.

In this way, the white LED 4 emits light only when the LCD 3 is performing normal drawing. On the other hand, the infrared LED 5 continuously emits light while the LCD 3 repeats normal drawing and transmittance control drawing. Therefore, the infrared light emitted by the infrared LED 5 is transmitted to the occupant through the LCD 3 whose transmittance is controlled when the white LED 4 is turned off. Therefore, the brightness of the infrared LED 5 can be adjusted by controlling the transmittance of the LCD 3 by the LCD control unit 14.

FIG. 4 is a flowchart showing an operation example of the occupant state detection device integrated display 1 according to the first embodiment. The occupant state detection device integrated display 1 repeats the operation shown in the flowchart of FIG. 4, for example, while the engine of the vehicle is operating. In the following, the LCD 3 is divided into a right area 3R, a central area 3C, and a left area 3L, and the infrared LED 5 is classified into a right area infrared LED 5R, a central area infrared LED 5C, and a left area infrared LED 5L. It shall be. Further, the white LED control unit 15 constantly causes the white LEDs 4 in the entire area to emit light intermittently during the operation shown in the flowchart of FIG.

In step ST1, the LCD control unit 14 alternately performs normal drawing and transmittance control drawing on the right area 3R, the center area 3C, and the left area 3L of the LCD 3. In step ST2, the infrared LED control unit 16 continuously emits the right area infrared LED 5R, the central area infrared LED 5C, and the left area infrared LED 5L.

In step ST3, the camera 2 takes an image of the vehicle interior at the timing when the white LED 4 is turned off and the infrared LED 5 emits light. In step ST4, the occupant position detection unit 12 detects the occupant using the image captured by the camera 2. When the occupant position detecting unit 12 determines that there is no occupant in the vehicle (step ST4 “NO”), the process returns to step ST1. On the other hand, when the occupant position detection unit 12 detects the occupant on the vehicle (step ST4 “YES”), the occupant position detection unit 12 detects the position of the occupant in step ST5. Here, it is assumed that the occupant position detection unit 12 has detected an occupant seated in the driver's seat.

In step ST6, the LCD control unit 14 alternately performs normal drawing and transmittance control drawing on the right area 3R corresponding to the driver's seat in the LCD 3, and the left area 3L corresponding to the passenger seat and the rear seat and the left area 3L. Normal drawing is performed on the central area 3C. In step ST7, the infrared LED control unit 16 continuously emits the right area infrared LED 5R corresponding to the driver's seat, and turns off the left area infrared LED 5L and the central area infrared LED 5C corresponding to the passenger seat and the rear seat.

In step ST8, when a predetermined event occurs (step ST8 “YES”), the processing of the occupant state detection device integrated display 1 returns to step ST1, and in other cases (step ST8 “NO”), the occupant state detection. The process of the device-integrated display 1 returns to step ST6. The predetermined event is when the vehicle stops traveling, when a predetermined time has elapsed from the time when the occupant is detected in step ST4, or when the occupant state detection unit 13 detects the occupant in step ST4. This is the case where the state of the occupant cannot be detected during the state detection (that is, the occupant moves out of the imaging range of the camera 2).

Although not shown in FIG. 4, the occupant position detection unit 12 may detect the movement locus of the occupant detected in step ST4. For example, when the occupant state detection unit 13 is detecting the state of the occupant in the driver's seat detected in step ST4, and the occupant position detection unit 12 detects the movement of the occupant in the direction of the passenger seat based on the movement locus. The LCD control unit 14 may change the area in which normal drawing and transmittance control drawing are alternately performed from the right area 3R corresponding to the driver's seat to the left area 3L corresponding to the passenger seat. At this time, the infrared LED control unit 16 changes the area for continuous light emission from the right area infrared LED 5R corresponding to the driver's seat to the left area infrared LED 5L corresponding to the passenger seat.

As described above, the occupant state detection device integrated display 1 according to the first embodiment includes a camera 2, an LCD 3, a plurality of white LEDs 4, a plurality of infrared LEDs 5, an occupant position detection unit 12, and an occupant state. It includes a detection unit 13, an LCD control unit 14, a white LED control unit 15, and an infrared LED control unit 16. The camera 2 has a function of capturing an infrared region. The LCD 3 illuminates the imaging direction of the camera 2. The plurality of white LEDs 4 and the plurality of infrared LEDs 5 are arranged on the back surface of the LCD 3. The occupant position detection unit 12 detects the position of the occupant on the vehicle by using the image captured by the camera 2. The occupant state detection unit 13 detects the state of the occupant in the vehicle by using the image captured by the camera 2. The LCD control unit 14 controls the transmittance of the area corresponding to the position of the occupant detected by the occupant position detection unit 12 in the LCD 3. The infrared LED control unit 16 emits the infrared LED 5 in the area corresponding to the position of the occupant detected by the occupant position detection unit 12 among the plurality of infrared LEDs 5. The white LED control unit 15 turns off the plurality of white LEDs 4 while any of the plurality of infrared LEDs 5 is emitting light. As described above, the occupant state detection device integrated display 1 can reduce unnecessary power by dynamically changing the area in which the infrared LED 5 emits light according to the position of the occupant. Therefore, the occupant state detection device integrated display 1 can suppress the power consumption when detecting the occupant state.

Further, the LCD control unit 14 of the first embodiment alternately alternates between normal drawing and transmittance control drawing in which the transmittance is controlled for the LCD 3 in the area corresponding to the occupant position detected by the occupant position detection unit 12. conduct. The white LED control unit 15 causes all of the plurality of white LEDs 4 to emit light during normal drawing and is turned off during transmittance control drawing. The infrared LED control unit 16 continuously emits infrared LEDs 5 in an area corresponding to the position of the occupant detected by the occupant position detection unit 12. There is a problem that unnecessary radiation is generated when the infrared LED 5 through which a large current flows intermittently emits light. However, in the first embodiment, since the infrared LED 5 continuously emits light, unnecessary radiation can be suppressed.

Further, the LCD control unit 14 of the first embodiment can adjust the brightness of the infrared LED 5 by controlling the transmittance of the LCD 3 during the transmittance control drawing.

Embodiment 2.
FIG. 5 is a block diagram showing a configuration example of the occupant state detection device integrated display 1 according to the second embodiment. In FIG. 5, the same or corresponding parts as those in FIG. 1 are designated by the same reference numerals, and the description thereof will be omitted.

FIG. 6 is a time chart showing an operation example of the LCD 3, the white LED 4, and the infrared LED 5 in the second embodiment. In the first embodiment, the LCD control unit 14 alternately alternates between normal drawing and transmittance control drawing controlled to the transmittance for adjusting the brightness of the infrared LED 5 for the area corresponding to the position of the occupant in the LCD 3. gone. On the other hand, in the second embodiment, the LCD control unit 14 alternately performs normal drawing and white drawing on the area corresponding to the position of the occupant in the LCD 3. White image drawing is a transmittance controlled drawing in which the transmittance is increased to the maximum.

Similar to the first embodiment, the white LED control unit 15 causes the white LEDs 4 in the entire area to emit light during normal drawing of the LCD 3, and is turned off during the transmittance control drawing.

In the first embodiment, the infrared LED control unit 16 continuously emits the infrared LED 5 in the area corresponding to the position of the occupant. On the other hand, in the second embodiment, the infrared LED control unit 16 turns off the infrared LED 5 in the area corresponding to the position of the occupant during the normal drawing of the LCD 3, and causes the infrared LED 5 to emit light during the transmittance control drawing.

Further, the infrared LED control unit 16 changes the light emission time of the infrared LED 5 according to the brightness measured by the exposure meter 2a. For example, when the brightness of the subject is less than the predetermined brightness, the infrared LED control unit 16 prolongs the light emission time of the infrared LED 5, and the brightness of the subject is equal to or higher than the predetermined brightness. In some cases, the light emission time of the infrared LED 5 is shortened. The brightness of the infrared LED 5 is adjusted by controlling the emission time of the infrared LED 5.

As described above, the LCD control unit 14 of the second embodiment performs normal drawing and transmittance control drawing in which the transmittance is controlled with respect to the LCD 3 in the area corresponding to the position of the occupant detected by the occupant position detection unit 12. Alternately. The white LED control unit 15 causes all of the plurality of white LEDs 4 to emit light during normal drawing and is turned off during transmittance control drawing. The infrared LED control unit 16 turns off the infrared LED 5 in the area corresponding to the position of the occupant detected by the occupant position detection unit 12 during normal drawing and emits light during the transmittance control drawing. In this way, the occupant state detection device integrated display 1 consumes power by turning off the infrared LED 5 in the area where there is no occupant and turning off the infrared LED 5 in the area where the occupant is present during normal drawing. It can be further suppressed.

Further, the infrared LED control unit 16 of the second embodiment can adjust the brightness of the infrared LED 5 by changing the light emission time of the infrared LED 5 during the transmittance control drawing.

Finally, the hardware configuration of the display control device 10 according to each embodiment will be described.
7A and 7B are diagrams showing a hardware configuration example of the display control device 10 according to each embodiment. The functions of the LCD control unit 14, the white LED control unit 15, and the infrared LED control unit 16 in the display control device 10 are realized by the drive circuit 103 that applies a voltage to the LCD 3, the white LED 4, and the infrared LED 5. The functions of the occupant position detection unit 12 and the occupant state detection unit 13 in the display control device 10 are realized by the processing circuit. That is, the display control device 10 includes a processing circuit for realizing the above functions. The processing circuit may be a processing circuit 100 as dedicated hardware, or may be a processor 101 that executes a program stored in the memory 102.

As shown in FIG. 7A, when the processing circuit is dedicated hardware, the processing circuit 100 may be, for example, a single circuit, a composite circuit, a programmed processor, a parallel programmed processor, an ASIC (System on a Chip). ), ASIC (Application Specific Integrated Circuit), FPGA (Field Programmable Gate Array), or a combination thereof. The functions of the occupant position detection unit 12 and the occupant state detection unit 13 may be realized by a plurality of processing circuits 100, or the functions of each unit may be collectively realized by one processing circuit 100.

As shown in FIG. 7B, when the processing circuit is the processor 101, the functions of the occupant position detection unit 12 and the occupant state detection unit 13 are realized by software, firmware, or a combination of software and firmware. The software or firmware is described as a program and stored in the memory 102. The processor 101 realizes the functions of each part by reading and executing the program stored in the memory 102. That is, the display control device 10 includes a memory 102 for storing a program in which the step shown in the flowchart of FIG. 4 is eventually executed when executed by the processor 101. Further, it can be said that this program causes the computer to execute the procedure or method of the occupant position detection unit 12 and the occupant state detection unit 13.

Here, the processor 101 is a CPU (Central Processing Unit), a processing device, an arithmetic unit, a microprocessor, or the like.
The memory 102 may be a non-volatile or volatile semiconductor memory such as a RAM (Random Access Memory), a ROM (Read Only Memory), an EPROM (Erasable Programmable ROM), or a flash memory, and may be a non-volatile or volatile semiconductor memory such as a hard disk or a flexible disk. It may be a magnetic disk of the above, or an optical disk such as a CD (Compact Disc) or a DVD (Digital Versaille Disc).

The functions of the occupant position detection unit 12 and the occupant state detection unit 13 may be partially realized by dedicated hardware and partly realized by software or firmware. As described above, the processing circuit in the display control device 10 can realize the above-mentioned functions by hardware, software, firmware, or a combination thereof.

The present invention allows any combination of embodiments, modifications of any component of each embodiment, or omission of any component of each embodiment within the scope of the invention.

1 Crew condition detector integrated display, 2 camera, 2a exposure meter, 3 LCD, 3R right area, 3C center area, 3L left area, 4 white LED, 5 infrared LED, 5R right area infrared LED, 5C center area Infrared LED, 5L left area infrared LED, 10 display control device, 11 occupant state detection device, 12 occupant position detection unit, 13 occupant state detection unit, 14 LCD control unit, 15 white LED control unit, 16 infrared LED control Unit, 100 processing circuit, 101 processor, 102 memory, 103 drive circuit.

Claims (6)

A camera that has a function to capture the infrared region,
A liquid crystal display that illuminates the image pickup direction of the camera,
A plurality of white light emitting elements and a plurality of infrared light emitting elements arranged on the back surface of the liquid crystal display,
An occupant position detection unit that detects the position of an occupant in a vehicle using an image captured by the camera, and a occupant position detection unit.
A occupant state detection unit that detects the state of the occupant on the vehicle using the image captured by the camera, and a occupant state detection unit.
Among the liquid crystal displays, the liquid crystal display control unit that controls the transmittance of the area corresponding to the position of the occupant detected by the occupant position detection unit, and the liquid crystal display control unit.
Among the plurality of infrared light emitting elements, an infrared light emitting element control unit that emits light from the infrared light emitting element in the area corresponding to the position of the occupant detected by the occupant position detecting unit.
A occupant state detection device integrated display including a white light emitting element control unit that turns off the plurality of white light emitting elements while the transmittance is changed by the control of the liquid crystal display control unit as compared with normal drawing . The liquid crystal display control unit alternately performs normal drawing and transmittance control drawing with controlled transmittance on the liquid crystal display in the area corresponding to the position of the occupant detected by the occupant position detecting unit.
The white light emitting element control unit causes all of the plurality of white light emitting elements to emit light during the normal drawing and is turned off during the transmittance control drawing.
The occupant state detection device according to claim 1, wherein the infrared light emitting element control unit continuously emits light from the infrared light emitting element in the area corresponding to the position of the occupant detected by the occupant position detecting unit. Integrated display. The occupant state detecting device according to claim 2, wherein the liquid crystal display control unit adjusts the brightness of the infrared light emitting element by controlling the transmittance of the liquid crystal display during the transmittance control drawing. Integrated display. The liquid crystal display control unit alternately performs normal drawing and transmittance control drawing with controlled transmittance on the liquid crystal display in the area corresponding to the position of the occupant detected by the occupant position detecting unit.
The white light emitting element control unit causes all of the plurality of white light emitting elements to emit light during the normal drawing and is turned off during the transmittance control drawing.
The infrared light emitting element control unit turns off the infrared light emitting element in the area corresponding to the position of the occupant detected by the occupant position detection unit during the normal drawing and emits light during the transmittance control drawing. The occupant state detection device integrated display according to claim 1. The fourth aspect of claim 4, wherein the infrared light emitting element control unit adjusts the brightness of the infrared light emitting element by changing the light emitting time of the infrared light emitting element during the transmittance control drawing. A display with an integrated occupant status detector. Crew state detection including a camera having a function of imaging an infrared region, a liquid crystal display that illuminates the imaging direction of the camera, and a plurality of white light emitting elements and a plurality of infrared light emitting elements arranged on the back surface of the liquid crystal display. A display control device that controls the operation of a device-integrated display.
An occupant position detection unit that detects the position of an occupant in a vehicle using an image captured by the camera, and a occupant position detection unit.
A occupant state detection unit that detects the state of the occupant on the vehicle using the image captured by the camera, and a occupant state detection unit.
Among the liquid crystal displays, the liquid crystal display control unit that controls the transmittance of the area corresponding to the position of the occupant detected by the occupant position detection unit, and the liquid crystal display control unit.
Among the plurality of infrared light emitting elements, an infrared light emitting element control unit that emits light from the infrared light emitting element in the area corresponding to the position of the occupant detected by the occupant position detecting unit.
A display control device including a white light emitting element control unit that turns off the plurality of white light emitting elements while the transmittance is changed as compared with normal drawing by the control of the liquid crystal display control unit.

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